242 results on '"ABCA3"'
Search Results
2. ABCA3 gene mutations shape the clinical profiles of severe unexplained respiratory distress syndrome in late preterm and term infants
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Lie Huang, Yuting Zhang, Yuan Shi, Juan Fan, and Jian-Hui Wang
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0301 basic medicine ,Pediatrics ,medicine.medical_specialty ,Mutation ,Late preterm infant ,Respiratory distress ,biology ,business.industry ,Retrospective cohort study ,ABCA3 ,Gene mutation ,Compound heterozygosity ,medicine.disease_cause ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,030225 pediatrics ,Pediatrics, Perinatology and Child Health ,biology.protein ,Medicine ,Original Article ,business ,Exome sequencing - Abstract
BACKGROUND: The majority of unexplained respiratory distress syndrome (URDS) cases in late preterm and term infants are caused by genetic abnormalities, with the most common of these being ABCA3 gene mutation. At present, it is unclear to neonatologists whether URDS patients with ABCA3 mutation have similar or more challenging clinical profiles to those without any defined genetic abnormalities. Our study aimed to answer this question by comparing the clinical characteristics of severe URDS patients with homozygous or compound heterozygous ABCA3 mutations, a single ABCA3 mutation, or no defined genetic abnormalities. METHODS: This retrospective cohort study involved 39 late preterm and term infants with URDS underwent a clinical exome sequencing at a tertiary neonatal intensive care unit between January 2013 and December 2019. Based on the sequencing result, the study subjects were classified into the homozygous or compound heterozygous mutations, single ABCA3 mutation, or no defined genetic abnormalities groups. The major outcomes, including mortality, the age of symptom onset and development of severe RDS, and the radiological score, were compared between the groups. RESULTS: A novel splicing site (c.3862+1G>C) was identified in one twin with homozygous expression. Patients with homozygous or compound heterozygous ABCA3 mutations exhibited symptom onset and development of severe respiratory distress syndrome (RDS) earlier than those with a single mutation or no genetic abnormalities (P
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- 2021
3. A homozygous variant in <scp> ABCA3 </scp> is associated with severe respiratory distress and early neonatal death
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Montaha Al-Iede, Mariam Khanfar, Eman F. Badran, Luma Srour, Bilal Azab, Raja Rabah, and Mousa A. Al-Abbadi
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Respiratory Distress Syndrome, Newborn ,Embryology ,Pediatrics ,medicine.medical_specialty ,biology ,Respiratory distress ,business.industry ,Perinatal Death ,Homozygote ,Infant, Newborn ,MEDLINE ,General Medicine ,ABCA3 ,Early neonatal death ,Text mining ,Mutation ,Pediatrics, Perinatology and Child Health ,biology.protein ,Humans ,Medicine ,ATP-Binding Cassette Transporters ,business ,Developmental Biology - Published
- 2021
4. Interventional creation of an endogenous reverse Potts shunt in an infant with pulmonary hypertension and genetic surfactant disorder—a case report
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Georg Hansmann, Hendrik Fischer, Sven C. Weber, Bernd Opgen-Rhein, Hannes Sallmon, and Felix Berger
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medicine.medical_specialty ,Percutaneous ,biology ,business.industry ,030204 cardiovascular system & hematology ,ABCA3 ,medicine.disease ,Compound heterozygosity ,Pulmonary hypertension ,03 medical and health sciences ,Catheter ,0302 clinical medicine ,medicine.anatomical_structure ,030228 respiratory system ,Ventricle ,Ductus arteriosus ,Internal medicine ,biology.protein ,Cardiology ,Medicine ,Biomarker (medicine) ,Cardiology and Cardiovascular Medicine ,business ,Case Report on Right Ventricular Dysfunction - Abstract
Reverse Potts shunt is a palliative procedure aimed at decompressing the pressure-overloaded right ventricle in severe pulmonary hypertension (PH). We, herein, report the first case of an interventional creation of an “endogenous” reverse Potts shunt by stenting a pre-existing small but patent ductus arteriosus (PDA) in a 2 months old female infant with severe, supra-systemic PH, associated with a novel combination of a compound heterozygous ABCA3 mutation and additional heterozygous genetic variants of surfactant protein B (SFTPB) and C (SFTPC). The aforementioned combination of human genetic mutations has not been described before in viable infants, children or adults. The catheter intervention was performed via percutaneous femoral arterial access and was well-tolerated. Subsequently, the infant improved by means of clinical status, echocardiographic systolic right ventricular (RV) function, and serum NT-proBNP levels as biomarker of right atrial and RV pressure load. In conclusion, this single case report suggests that interventional stenting of a pre-existing PDA to create an “endogenous” reverse Potts shunt is feasible and efficacious in infants less than 3 months old with severe PH and impending RV failure associated with developmental lung disease.
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- 2020
5. Functional Genomics of ABCA3 Variants
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Ping Yang, Hillary B. Heins, Frances V. White, Daniel J. Wegner, Cliff J. Luke, Fuhai Li, F. Sessions Cole, and Jennifer A. Wambach
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0301 basic medicine ,Pulmonary and Respiratory Medicine ,Neonatal respiratory distress syndrome ,biology ,business.industry ,Clinical Biochemistry ,Transporter ,Cell Biology ,ABCA3 ,Neonatal respiratory failure ,Bioinformatics ,medicine.disease ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,030228 respiratory system ,biology.protein ,Medicine ,business ,Molecular Biology ,Gene ,Functional genomics - Abstract
Rare or private, biallelic variants in the ABCA3 (ATP-binding cassette transporter A3) gene are the most common monogenic cause of lethal neonatal respiratory failure and childhood interstitial lun...
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- 2020
6. ABCA3 mutations in adult pulmonary fibrosis patients: a case series and review of literature
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Dymph Klay, Jan C. Grutters, Mark G J P Platenburg, Coline H.M. van Moorsel, and Rein H N A J van Rijswijk
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Pulmonary and Respiratory Medicine ,Pediatrics ,medicine.medical_specialty ,Mutation ,Adult patients ,biology ,business.industry ,Interstitial lung disease ,Late onset ,Disease ,ABCA3 ,medicine.disease ,medicine.disease_cause ,Disease course ,03 medical and health sciences ,0302 clinical medicine ,030228 respiratory system ,Pulmonary fibrosis ,biology.protein ,Medicine ,030212 general & internal medicine ,business - Abstract
Purpose of review The current review aims to recognize the variability in clinical presentation of adult patients with bi-allelic ABCA3 mutations, create more depth in ABCA3 mutations reported and highlight the influence of environmental factors on disease course. Recent findings Mutations in ABCA3 are predominantly linked to neonatal and pediatric interstitial lung disease (ILD) with a minority surviving beyond puberty. Here, we present three patients with ABCA3 mutations who present with disease at the age of 19, 61 and 77. Moreover, we identified c.4451G>C (p.R1484P), c.1675G>A (p.G559R) and c.4745C>G (p.T1582S) as three novel ABCA3 mutations. In addition, we identified six additional patients with ABCA3 mutations in literature who reached an age above 18. Furthermore, we discuss the influence of infections, drugs and smoking on disease course. Summary Although extremely rare, patients with bi-allelic mutations in ABCA3 may present at adulthood. Late onset of disease may be influenced by type of mutation or environmental factors.
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- 2020
7. Genetic Disorders of Surfactant Deficiency and Neonatal Lung Disease
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Raffaella Nenna, Amelia Licari, Salvatore Leonardi, Maria Papale, and Giuseppe Fabio Parisi
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Pulmonary and Respiratory Medicine ,Surfactant proteins C and B ,biology ,Surfactant deficiency ,business.industry ,Neonatal lung disease ,ABCA3 ,Disease ,Pediatric interstitial lung disease ,03 medical and health sciences ,0302 clinical medicine ,030228 respiratory system ,030225 pediatrics ,Immunology ,Genetics ,Granulocyte macrophage colony-stimulating factor (GM-CSF) ,biology.protein ,Surfactant proteins ,Medicine ,business ,Neonatal lung - Abstract
Pulmonary surfactant is a heterogeneous combination of lipids and proteins, which prevents alveolar collapse at the end of expiration cycle by decreasing the alveolar surface tension at the air-liquid interface. At birth, the expression of surfactant is very important for normal lung function and it is strictly correlated to gestational age. The best known genetic mutations associated with the onset of respiratory distress in preterm and full-term newborns and with interstitial lung disease later in childhood are those involving the phospholipid transporter (ABCA3) or surfactant proteins C and B (SP-C and SP-B) genes. In particular, mutations in the SP-B gene induce respiratory distress in neonatal period, while alterations on gene encoding for SP-C are commonly associated with diffuse lung disease in children or in adults. Both clinical phenotypes are present, if genetic mutations interest even the phospholipid transporter ABCA3 ambiguity in the sentence. Interstitial lung disease in children (chILD) is defined as a mixed category of mainly chronic and rare respiratory disorders with increased mortality and morbidity. Although genetic alterations are mainly responsible for the onset of these diseases, however, there are also other pathogenic factors that contribute to increase the severity of clinical presentation. In this review, we analyze all clinical features of these rare pulmonary diseases in neonatal and in pediatric age.
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- 2020
8. Genotypes and Phenotypes of Chinese Pediatric Patients With Idiopathic and Heritable Pulmonary Arterial Hypertension—A Single-Center Study
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Qiangqiang Li, Jie Du, Yan Zhu, Qian Liu, Hongsheng Zhang, Chunmei Piao, and Hong Gu
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Male ,China ,medicine.medical_specialty ,Genotype ,Vasodilator Agents ,Kaplan-Meier Estimate ,030204 cardiovascular system & hematology ,Gene mutation ,ABCA3 ,Pediatrics ,Risk Assessment ,Gastroenterology ,Cohort Studies ,03 medical and health sciences ,0302 clinical medicine ,Cause of Death ,Internal medicine ,Prevalence ,medicine ,Humans ,Familial Primary Pulmonary Hypertension ,Genetic Predisposition to Disease ,Genetic Testing ,030212 general & internal medicine ,Child ,Survival analysis ,Retrospective Studies ,Cause of death ,Pulmonary Arterial Hypertension ,biology ,business.industry ,ACVRL1 ,Retrospective cohort study ,Odds ratio ,Survival Analysis ,Logistic Models ,Phenotype ,Gene Expression Regulation ,Child, Preschool ,biology.protein ,Female ,Cardiology and Cardiovascular Medicine ,business ,Cohort study - Abstract
Background The relationship between clinical outcomes and gene mutations in Chinese pediatric patients with idiopathic and heritable pulmonary arterial hypertension (PAH) is unclear. Methods We retrospectively studied the clinical characteristics and outcomes of pediatric patients who visited Beijing Anzhen Hospital from September 2008 to December 2018. Results Eighty-two pediatric patients were included. Forty-two gene mutations were identified in 41 patients (50%), including 25 mutations in BMPR2, 5 mutations in ACVRL1, 3 mutations each in ABCA3 and NOTCH3, 2 mutations each in KCNK3 and HTR2B, 1 mutation in ENG, and 1 mutation in EIF2AK4. The mean age at diagnosis of PAH was 86.4 ± 55.1 months. Forty-eight patients (twenty-eight mutation carriers) underwent cardiac catheterization examinations, with acute vasodilator testing performed simultaneously. Results showed that mutation carriers demonstrated a higher pulmonary vascular resistance index (P = 0.037). Patients with gene mutations responded poorly to vasodilators (P = 0.001). The 1-, 2-, and 3-year survival rates of mutation noncarriers were 95.1%, 87.8%, and 82.5% respectively; while for mutation carriers, the proportions were 86.6% (P = 0.216), 63.8% (P = 0.021), and 52.2% (P = 0.010), respectively. Cardiac index was an independent predictor of death (P = 0.005; odds ratio [OR] 2.16, 95% confidence interval [CI] 1.258-3.704), as well as RAP (P = 0.01; OR 1.26, 95% CI 1.056-1.503). Conclusions In our cohort of Chinese pediatric patients, those with an identified gene mutation demonstrated worse clinical outcomes. Therefore, early gene screening for pediatric patients with idiopathic and heritable PAH is recommended, and more aggressive treatment for mutation carriers may be advisable.
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- 2019
9. ABCA3 deficiency dramatically improved by azithromycin administration
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Daisuke Nishida, Shinji Kawabe, Kazutoshi Cho, and Naomi Iwata
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Respiratory Distress Syndrome, Newborn ,medicine.medical_specialty ,biology ,business.industry ,Infant, Newborn ,Interstitial lung disease ,Hydroxychloroquine ,Azithromycin ,ABCA3 ,medicine.disease ,Gastroenterology ,Internal medicine ,Mutation ,Pediatrics, Perinatology and Child Health ,medicine ,biology.protein ,Humans ,ATP-Binding Cassette Transporters ,Lung Diseases, Interstitial ,Pulmonary alveolar proteinosis ,business ,Administration (government) ,medicine.drug - Published
- 2021
10. A novel synonymous ABCA3 variant identified in a Chinese family with lethal neonatal respiratory failure
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Ying He, Zhiyong Liu, Weifeng Zhang, Fengfeng Zhang, Jinglin Xu, Lianqiang Wu, Yiming Lin, Dongmei Chen, and Ruiquan Wang
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Male ,Proband ,China ,Monozygotic twin ,Cryptic splice site ,QH426-470 ,ABCA3 ,Compound heterozygosity ,ABCA3 gene ,symbols.namesake ,Exon ,Lethal neonatal respiratory failure ,Genetics ,Humans ,Internal medicine ,Genetics (clinical) ,Exome sequencing ,Sanger sequencing ,biology ,Research ,Infant, Newborn ,Pulmonary surfactant ,Phospholipid transport ,RC31-1245 ,Pedigree ,biology.protein ,symbols ,ATP-Binding Cassette Transporters ,Female ,Synonymous variant ,Respiratory Insufficiency ,Infant, Premature - Abstract
Background Lethal respiratory failure is primarily caused by a deficiency of pulmonary surfactant, and is the main cause of neonatal death among preterm infants. Pulmonary surfactant metabolism dysfunction caused by variants in the ABCA3 gene is a rare disease with very poor prognosis. Currently, the mechanisms associated with some ABCA3 variants have been determined, including protein mistrafficking and impaired phospholipid transport. However, some novel variants and their underlying pathogenesis has not been fully elucidated yet. In this study we aimed to identify the genetic features in a family with lethal respiratory failure. Methods We studied members of two generations of a Chinese family, including a female proband, her parents, her monozygotic twin sister, and her older sister. Trio whole exome sequencing (WES) were used on the proband and her parents to identify the ABCA3 variants. Sanger sequencing and real-time quantitative polymerase chain reaction (PCR) were used on the monozygotic twin sister of proband to validate the ABCA3 synonymous variant and exon deletion, respectively. The potential pathogenicity of the identified synonymous variant was predicted using the splice site algorithms dbscSNV11_AdaBoost, dbscSNV11_RandomForest, and Human Splicing Finder (HSF). Results All patients showed severe respiratory distress, which could not be relieved by mechanical ventilation, supplementation of surfactant, or steroid therapy, and died at an early age. WES analysis revealed that the proband had compound heterozygous ABCA3 variants, including a novel synonymous variant c.G873A (p.Lys291Lys) in exon 8 inherited from the mother, and a heterozygous deletion of exons 4–7 inherited from the father. The synonymous variant was consistently predicted to be a cryptic splice donor site that may lead to aberrant splicing of the pre-mRNA by three different splice site algorithms. The deletion of exons 4–7 of the ABCA3 gene was determined to be a likely pathogenic variant. The variants were confirmed in the monozygotic twin sister of proband by Sanger sequencing and qPCR respectively. The older sister of proband was not available to determine if she also carried both ABCA3 variants, but it is highly likely based on her clinical course. Conclusions We identified a novel synonymous variant and a deletion in the ABCA3 gene that may be responsible for the pathogenesis in patients in this family. These results add to the known mutational spectrum of the ABCA3 gene. The study of ABCA3 variants may be helpful for the implementation of patient-specific therapies.
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- 2021
11. Structure-Based Understanding of ABCA3 Variants
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Isabelle Callebaut, Alix de Becdelièvre, Pascale Fanen, Marion Onnée, Institut Mondor de Recherche Biomédicale (IMRB), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-IFR10, and Gestionnaire, HAL Sorbonne Université 5
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Models, Molecular ,Protein Conformation ,ABCA4 ,ABCA3 ,medicine.disease_cause ,0302 clinical medicine ,Adenosine Triphosphate ,Missense mutation ,Biology (General) ,nucleotide-binding domain (NBD) ,Spectroscopy ,0303 health sciences ,Mutation ,biology ,General Medicine ,3. Good health ,Computer Science Applications ,Transmembrane domain ,Chemistry ,regulatory domain (RD) ,030220 oncology & carcinogenesis ,QH301-705.5 ,Genetic counseling ,Mutation, Missense ,Computational biology ,Catalysis ,Article ,3D modeling ,Inorganic Chemistry ,03 medical and health sciences ,Protein Domains ,[SDV.BBM] Life Sciences [q-bio]/Biochemistry, Molecular Biology ,medicine ,Humans ,[SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology ,Amino Acid Sequence ,Physical and Theoretical Chemistry ,Molecular Biology ,QD1-999 ,030304 developmental biology ,Respiratory Distress Syndrome, Newborn ,Binding Sites ,Sequence Homology, Amino Acid ,Organic Chemistry ,Computational Biology ,Genetic Variation ,Pulmonary Surfactants ,Cytosolic part ,biology.protein ,ATP-Binding Cassette Transporters ,mutation ,Lung Diseases, Interstitial ,Function (biology) - Abstract
International audience; ABCA3 is a crucial protein of pulmonary surfactant biosynthesis, associated with recessive pulmonary disorders such as neonatal respiratory distress and interstitial lung disease. Mutations are mostly private, and accurate interpretation of variants is mandatory for genetic counseling and patient care. We used 3D structure information to complete the set of available bioinformatics tools dedicated to medical decision. Using the experimental structure of human ABCA4, we modeled at atomic resolution the human ABCA3 3D structure including transmembrane domains (TMDs), nucleotide-binding domains (NBDs), and regulatory domains (RDs) in an ATP-bound conformation. We focused and mapped known pathogenic missense variants on this model. We pinpointed amino-acids within the NBDs, the RDs and within the interfaces between the NBDs and TMDs intracellular helices (IHs), which are predicted to play key roles in the structure and/or the function of the ABCA3 transporter. This theoretical study also highlighted the possible impact of ABCA3 variants in the cytosolic part of the protein, such as the well-known p.Glu292Val and p.Arg288Lys variants.
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- 2021
12. Heterogeneity in Human Induced Pluripotent Stem Cell-derived Alveolar Epithelial Type II Cells Revealed with ABCA3/SFTPC Reporters
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Krithi Gopalan, Jessie Huang, Darrell N. Kotton, Michael F. Beers, Carlos Villacorta-Martin, Killian Hurley, Yuliang L. Sun, Anne Hinds, Jeffrey A. Whitsett, Ignacio S. Caballero, Joseph A. Kitzmiller, and Scott J. Russo
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Pulmonary and Respiratory Medicine ,Pulmonary Surfactant-Associated Proteins ,Clinical Biochemistry ,Induced Pluripotent Stem Cells ,Biology ,ABCA3 ,Pulmonary surfactant ,Genome editing ,medicine ,Humans ,Progenitor cell ,Induced pluripotent stem cell ,Molecular Biology ,Lung ,Editorials ,Cell Differentiation ,Epithelial Cells ,Cell Biology ,respiratory system ,Pulmonary Surfactant-Associated Protein C ,respiratory tract diseases ,Cell biology ,Pulmonary Alveoli ,medicine.anatomical_structure ,Alveolar Epithelial Cells ,biology.protein ,ATP-Binding Cassette Transporters - Abstract
Alveolar epithelial type 2 cells (AEC2s), the facultative progenitors of lung alveoli, are typically identified through the use of the canonical markers, SFTPC and ABCA3. Self-renewing AEC2-like cells have been generated from human induced pluripotent stem cells (iPSCs) through the use of knock-in SFTPC fluorochrome reporters. However, developmentally, SFTPC expression onset begins in the fetal distal lung bud tip and thus is not specific to mature AEC2s. Furthermore, SFTPC reporters appear to identify only those iPSC-derived AEC2s (iAEC2s) expressing the highest SFTPC levels. Here, we generate an ABCA3 knock-in GFP fusion reporter (ABCA3:GFP) that enables the purification of iAEC2s while allowing visualization of lamellar bodies, organelles associated with AEC2 maturation. Using an SFTPC
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- 2021
13. ABCA3 gene mutations in 2 premature infants with respiratory distress syndrome
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G.A. Shyshko, A.V. Kilchevsky, Alena Mikhalenka, M.V. Artsiusheuskaya, and V.M. Malyshava
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Respiratory distress ,biology ,business.industry ,Immunology ,biology.protein ,Medicine ,Gene mutation ,ABCA3 ,business - Published
- 2021
14. Bi-allelic missense ABCA3 mutations in a patient with childhood ILD who reached adulthood
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Caroline Kannengiesser, Spyros Papiris, Serge Amselem, Raphael Borie, Annick Clement, Pericles Tomos, Bruno Crestani, Marie Legendre, Nadia Nathan, Matthias Griese, Effrosyni D. Manali, Aurore Coulomb-L'Hermine, Theofanis Tsiligiannis, Couvet, Sandrine, National and Kapodistrian University of Athens (NKUA), Maladies génétiques d'expression pédiatrique [CHU Trousseau] (Inserm U933), Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), UF de Génétique moléculaire [CHU Trousseau], CHU Trousseau [APHP], Centre de référence national pour les maladies respiratoires rares de l’enfant RespiRare [CHU Trousseau], Service de Pneumologie pédiatrique [CHU Trousseau], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-CHU Trousseau [APHP], AP-HP - Hôpital Bichat - Claude Bernard [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Mitera Pediatric Hospital [Athens], Ludwig-Maximilians University [Munich] (LMU), German Center for Lung Research, Centre de Référence des Maladies Pulmonaires Rares [AP-HP Hôpital Bichat], and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)
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Pulmonary and Respiratory Medicine ,Pediatrics ,medicine.medical_specialty ,Referral ,[SDV]Life Sciences [q-bio] ,lcsh:Medicine ,[SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics ,ABCA3 ,03 medical and health sciences ,0302 clinical medicine ,Text mining ,Medicine ,Missense mutation ,030212 general & internal medicine ,Allele ,Adult patients ,biology ,business.industry ,lcsh:R ,Original Research Letter ,respiratory system ,3. Good health ,Molecular analysis ,[SDV] Life Sciences [q-bio] ,[SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics ,030228 respiratory system ,biology.protein ,business - Abstract
The adenosine triphosphate (ATP)-binding cassette subfamily A member 3 (ABCA3) is a transmembrane glycoprotein that uses energy of ATP hydrolysis to transport phospholipids into the lamellar bodies of type 2 alveolar epithelial cells (AEC) and regulates lung surfactant homeostasis. More than 200 mutations have already been described in ABCA3, located on chromosome 16 [1, 2]. Patients present with a great heterogeneity of phenotypes, from lethal neonatal respiratory distress syndrome (RDS) to childhood and rarely adult interstitial lung disease (ILD) [3, 4]. ABCA3 mutations-related lung disease inheritance is autosomal recessive, as it requires two disease-causing (bi-allelic) mutations, one from each parent., Children with ABCA3 mutations may survive beyond infancy and reach adulthood. Genetic mechanisms should always be examined in adult patients with childhood onset ILD and molecular analysis should be performed accordingly in specialised referral centres. http://bit.ly/2LzMNOE
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- 2019
15. Lung disease in<scp>STAT</scp>3 hyper‐IgE syndrome requires intense therapy
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Julia Ley-Zaporozhan, Gregor Dückers, Ellen D. Renner, Carolin Kröner, Jens Neumann, Susanne Nährig, Bernd H. Belohradsky, Iris Meixner, Benedikt D. Spielberger, Matthias Griese, Matthias Kappler, Simone Reu, Beate Hagl, Joseph Rosenecker, Michael Borte, and Tim Niehues
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Adult ,Lung Diseases ,Male ,STAT3 Transcription Factor ,0301 basic medicine ,medicine.medical_specialty ,Adolescent ,Biopsy ,Immunology ,Chest physiotherapy ,ABCA3 ,Young Adult ,03 medical and health sciences ,FEV1/FVC ratio ,0302 clinical medicine ,Anti-Infective Agents ,Internal medicine ,medicine ,Humans ,Immunology and Allergy ,Child ,Lung ,Bronchiectasis ,Inhalation ,Pneumatocele ,biology ,business.industry ,Disease Management ,Middle Aged ,respiratory system ,Prognosis ,medicine.disease ,Combined Modality Therapy ,Immunohistochemistry ,Respiratory Function Tests ,Treatment Outcome ,030104 developmental biology ,medicine.anatomical_structure ,030228 respiratory system ,Primary immunodeficiency ,biology.protein ,Female ,Radiography, Thoracic ,Disease Susceptibility ,Symptom Assessment ,Tomography, X-Ray Computed ,business ,Job Syndrome - Abstract
Background Pulmonary complications are responsible for high morbidity and mortality rates in patients with the rare immunodeficiency disorder STAT3 hyper-IgE syndrome (STAT3-HIES). The aim of this study was to expand knowledge about lung disease in STAT3-HIES. Methods The course of pulmonary disease, radiological and histopathological interrelations, therapeutic management, and the outcome of 14 STAT3-HIES patients were assessed. Results The patients' quality of life was compromised most by pulmonary disease. All 14 patients showed first signs of lung disease at a median onset of 1.5 years of age. Lung function revealed a mixed obstructive-restrictive impairment with reduced FEV1 and FVC in 75% of the patients. The severity of lung function impairment was associated with Aspergillus fumigatus infection and prior lung surgery. Severe lung tissue damage, with reduced numbers of ATP-binding cassette sub-family A member 3 (ABCA3) positive type II pneumocytes, was observed in the histological assessment of two deceased patients. Imaging studies of all patients above 6 years of age showed severe airway and parenchyma destruction. Lung surgeries frequently led to complications, including fistula formation. Long-term antifungal and antibacterial treatment proved to be beneficial, as were inhalation therapy, chest physiotherapy, and exercise. Regular immunoglobulin replacement therapy tended to stabilize lung function. Conclusions Due to its severity, pulmonary disease in STAT3-HIES patients requires strict monitoring and intensive therapy.
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- 2019
16. Surfactant protein disorders in childhood interstitial lung disease
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Jagdev Singh, Adam Jaffe, Hiran Selvadurai, and André Schultz
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Lung ,biology ,business.industry ,Interstitial lung disease ,Atelectasis ,Context (language use) ,Surfactant protein C ,ABCA3 ,Bioinformatics ,medicine.disease ,Review article ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,Pulmonary surfactant ,030225 pediatrics ,Pediatrics, Perinatology and Child Health ,medicine ,biology.protein ,030212 general & internal medicine ,business - Abstract
Surfactant, which was first identified in the 1920s, is pivotal to lower the surface tension in alveoli of the lungs and helps to lower the work of breathing and prevents atelectasis. Surfactant proteins, such as surfactant protein B and surfactant protein C, contribute to function and stability of surfactant film. Additionally, adenosine triphosphate binding cassette 3 and thyroid transcription factor-1 are also integral for the normal structure and functioning of pulmonary surfactant. Through the study and improved understanding of surfactant over the decades, there is increasing interest into the study of childhood interstitial lung diseases (chILD) in the context of surfactant protein disorders. Surfactant protein deficiency syndrome (SPDS) is a group of rare diseases within the chILD group that is caused by genetic mutations of SFTPB, SFTPC, ABCA3 and TTF1 genes.Conclusion: This review article seeks to provide an overview of surfactant protein disorders in the context of chILD. What is Known: • Surfactant protein disorders are an extremely rare group of disorders caused by genetic mutations of SFTPB, SPTPC, ABCA3 and TTF1 genes. • Given its rarity, research is only beginning to unmask the pathophysiology, inheritance, spectrum of disease and its manifestations. What is New: • Diagnostic and treatment options continue to be explored and evolve in these conditions. • It is, therefore, imperative that we as paediatricians are abreast with current development in this field.
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- 2021
17. Genetic variants of small airways and interstitial pulmonary disease in children
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Priya Antony, Mohammed T. Alsamri, Abdul-Kader Souid, Amnah Alabdouli, Durdana Iram, Alia M. Alkalbani, Mohamed I. Tawil, and Ranjit Vijayan
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Male ,0301 basic medicine ,Science ,ABCA3 ,Compound heterozygosity ,Polymorphism, Single Nucleotide ,Article ,Cytokine Receptor Common beta Subunit ,03 medical and health sciences ,0302 clinical medicine ,Pulmonary fibrosis ,medicine ,Humans ,Missense mutation ,Genetic Predisposition to Disease ,Surfactant metabolism dysfunction ,Clinical genetics ,Respiratory system ,Child ,Epithelial Sodium Channels ,Lung ,Retrospective Studies ,Respiratory tract diseases ,Multidisciplinary ,Bronchiectasis ,biology ,business.industry ,Medical genetics ,Respiratory disease ,Infant ,medicine.disease ,Mucin-5B ,030104 developmental biology ,030228 respiratory system ,Child, Preschool ,Mutation ,Immunology ,biology.protein ,Medicine ,ATP-Binding Cassette Transporters ,Female ,Radiography, Thoracic ,Lung Diseases, Interstitial ,business - Abstract
Genetic variants of small airways and interstitial pulmonary disease have not been comprehensively studied. This cluster of respiratory disorders usually manifests from early infancy (‘lung disease in utero’). In this study, 24 variants linked to these entities are described. The variants involved two genes associated with surfactant metabolism dysfunction (ABCA3 and CSF2RB), two with pulmonary fibrosis (MUC5B and SFTP), one with bronchiectasis (SCNN1B), and one with alpha-1-antitrypsin deficiency (SERPINA1). A nonsense variant, MUC5B:c.16861G > T, p.Glu5621*, was found in homozygous state in two siblings with severe respiratory disease from birth. One of the siblings also had heterozygous SFTPA1:c.675C > G, p.Asn225Lys, which resulted in a more severe respiratory disease. The sibling with only the homozygous MUC5B variant had lung biopsy, which showed alveolar simplification, interstitial fibrosis, intra-alveolar lipid-laden macrophages, and foci of foreign body giant cell reaction in distal airspaces. Two missense variants, MUC5B:c.14936 T > C, p.Ile4979Thr (rs201287218) and MUC5B:c.16738G > A, p.Gly5580Arg (rs776709402), were also found in compound heterozygous state in two siblings with severe respiratory disease from birth. Overall, the results emphasize the need for genetic studies for patients with complex respiratory problems. Identifying pathogenic variants, such as those presented here, assists in effective family counseling aimed at genetic prevention. In addition, results of genetic studies improve the clinical care and provide opportunities for participating in clinical trials, such as those involving molecularly-targeted therapies.
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- 2021
18. Hydroxychloroquine, a successful treatment for lung disease in ABCA3 deficiency gene mutation: a case report
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Ali Abdulraheem, Waleed Shaaban, Nawal Alkazemi, Yasser Yahia Elsayed, and Majeda S. Hammoud
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Male ,medicine.medical_specialty ,Neonatal respiratory distress syndrome ,medicine.medical_treatment ,lcsh:Medicine ,Case Report ,ABCA3 ,Gene mutation ,Gastroenterology ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,medicine ,Lung transplantation ,Humans ,Respiratory system ,Child ,Respiratory Distress Syndrome, Newborn ,biology ,Respiratory distress ,business.industry ,lcsh:R ,Infant, Newborn ,Infant ,Hydroxychloroquine ,Pulmonary surfactant ,General Medicine ,medicine.disease ,030228 respiratory system ,Respiratory failure ,030220 oncology & carcinogenesis ,Mutation ,biology.protein ,ATP-Binding Cassette Transporters ,business ,Lung Diseases, Interstitial ,medicine.drug - Abstract
Background Pulmonary surfactant is a complex mixture of lipids and specific proteins that stabilizes the alveoli at the end of expiration. Mutations in the gene coding for the triphosphate binding cassette transporter A3 (ABCA3), which facilitates the transfer of lipids to lamellar bodies, constitute the most frequent genetic cause of severe neonatal respiratory distress syndrome and chronic interstitial lung disease in children. Hydroxychloroquine can be used as an effective treatment for this rare severe condition. Case presentation We report a late preterm Bosnian baby boy (36 weeks) who suffered from a severe form of respiratory distress syndrome with poor response to intensive conventional management and whole exome sequencing revealed homozygous ABCA3 mis-sense mutation. The baby showed remarkable improvement of the respiratory condition after the initiation of Hydroxychloroquine, Azithromycin and Corticosteroids with the continuation of Hydroxychloroquine as a monotherapy till after discharge from the hospital. Conclusion Outcome in patients with ABCA3 mutations is variable ranging from severe irreversible respiratory failure in early infancy to chronic interstitial lung disease in childhood (ChILD) usually with the need for lung transplantation in many patients surviving this rare disorder. Hydroxychloroquine through its anti-inflammatory effects or alteration of intra-cellular metabolism may have an effect in treating cases of ABCA3 gene mutations.
- Published
- 2021
19. PPARγ activation in late gestation does not promote surfactant maturation in the fetal sheep lung
- Author
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Janna L. Morrison, Megan Quinn, Mitchell C. Lock, Jiaqi Ren, Jack R. T. Darby, Sandra Orgeig, Stacey L. Holman, Beverly S. Muhlhausler, I. Caroline McMillen, Mike Seed, Ren, Jiaqi, Lock, Mitchell C, Darby, Jack RT, Orgeig, Sandra, Holman, Stacey L, Quinn, Megan, Seed, Mike, Muhlhausler, Beverly S, Mcmillen, I Caroline, and Morrison, Janna L
- Subjects
0301 basic medicine ,medicine.medical_specialty ,PPARγ ,Phospholipid ,Medicine (miscellaneous) ,Gestational Age ,030204 cardiovascular system & hematology ,Lamellar granule ,ABCA3 ,leptin ,rosiglitazone ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Fetus ,Pulmonary surfactant ,Pregnancy ,Internal medicine ,medicine ,Animals ,Receptor ,Protein maturation ,Lung ,Sheep ,biology ,Leptin ,Pulmonary Surfactants ,respiratory distress syndrome ,PPAR gamma ,030104 developmental biology ,Endocrinology ,chemistry ,biology.protein ,Female ,Growth and Development ,surfactant maturation ,Infant, Premature - Abstract
Respiratory distress syndrome results from inadequate functional pulmonary surfactant and is a significant cause of mortality in preterm infants. Surfactant is essential for regulating alveolar interfacial surface tension, and its synthesis by Type II alveolar epithelial cells is stimulated by leptin produced by pulmonary lipofibroblasts upon activation by peroxisome proliferator-activated receptor γ (PPARγ). As it is unknown whether PPARγ stimulation or direct leptin administration can stimulate surfactant synthesis before birth, we examined the effect of continuous fetal administration of either the PPARγ agonist, rosiglitazone (RGZ; Study 1) or leptin (Study 2) on surfactant protein maturation in the late gestation fetal sheep lung. We measured mRNA expression of genes involved in surfactant maturation and showed that RGZ treatment reduced mRNA expression of LPCAT1 (surfactant phospholipid synthesis) and LAMP3 (marker for lamellar bodies), but did not alter mRNA expression of PPARγ, surfactant proteins (SFTP-A, -B, -C, and -D), PCYT1A (surfactant phospholipid synthesis), ABCA3 (phospholipid transportation), or the PPARγ target genes SPHK-1 and PAI-1. Leptin infusion significantly increased the expression of PPARγ and IGF2 and decreased the expression of SFTP-B. However, mRNA expression of the majority of genes involved in surfactant synthesis was not affected. These results suggest a potential decreased capacity for surfactant phospholipid and protein production in the fetal lung after RGZ and leptin administration, respectively. Therefore, targeting PPARγ may not be a feasible mechanistic approach to promote lung maturation.
- Published
- 2021
20. Familial pulmonary fibrosis - guidelines for diagnostics and treatment
- Author
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Michael Doubek, Martina Doubková, and Martina Sterclova
- Subjects
medicine.medical_specialty ,Lung ,biology ,business.industry ,Pulmonary Fibrosis ,ABCA3 ,medicine.disease ,Telomere ,Pathogenesis ,medicine.anatomical_structure ,Pulmonary fibrosis ,Immunology ,Mutation ,Internal Medicine ,biology.protein ,medicine ,Medical genetics ,Humans ,Respiratory system ,Cardiology and Cardiovascular Medicine ,business ,Lung Diseases, Interstitial ,Homeostasis - Abstract
Familial pulmonary fibrosis (FPF) is defined as interstitial lung involvement in at least two members of the same biological family. Pathogenesis of FPF involves background of genetic risk factors further modified by environmental exposures and aging. Manifesta tion of FPF mirrors manifestation of interstitial lung diseases generally. Patients may present also with involvement of other organs, as seen usually in those affected by complex syndromes or telomeropaties. Described mutations concern telomeres homeostasis genes (TERT, TERC, RTEL1, PARN, DKC1, TINF, NAF1), surfactant genes (SFTPC, ABCA3, NFKX21) or genes associated with complex syndromes (COPA, TMEM173, HPS18, NF1, FAM111B, NDUFAF6, GATA 2). Genetic tests are indicated by specialist in clinical genetics, optimaly after consultation with respiratory specialist involved in interstitial lung diseases. Treatment of FPF is currently unknown. In patients with multiorgan involvement growing number of organs may be affected in time and sometimes dysfunction of mostly severe affected organ may manifest before interstitial lung involvement.
- Published
- 2020
21. Verification of immunology-related genetic associations in BPD supports ABCA3 and five other genes
- Author
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Mohammad R. Toliat, Holger Kirsten, Trinad Chakraborty, Katrin Horn, Arnd Gross, Peter Ahnert, Peter Nürnberg, Felix Blume, Markus Scholz, Eva-Maria Westenfelder, and Wolfgang Goepel
- Subjects
Candidate gene ,Single-nucleotide polymorphism ,Gestational Age ,ABCA3 ,Bioinformatics ,Polymorphism, Single Nucleotide ,medicine ,Humans ,Gene ,Bronchopulmonary Dysplasia ,biology ,business.industry ,Infant, Newborn ,Gestational age ,Pulmonary Surfactants ,medicine.disease ,Phenotype ,Repressor Proteins ,Bronchopulmonary dysplasia ,Pediatrics, Perinatology and Child Health ,biology.protein ,ATP-Binding Cassette Transporters ,business ,Literature survey ,Protein Kinases ,Infant, Premature - Abstract
Background Inflammatory processes are key drivers of bronchopulmonary dysplasia (BPD), a chronic lung disease in preterm infants. In a large sample, we verify previously reported associations of genetic variants of immunology-related genes with BPD. Methods Preterm infants with a gestational age ≤32 weeks from PROGRESS and the German Neonatal Network (GNN) were included. Through a consensus case/control definition, 278 BPD cases and 670 controls were identified. We identified 49 immunity-related genes and 55 single-nucleotide polymorphisms (SNPs) previously associated with BPD through a comprehensive literature survey. Additionally, a quantitative genetic association analysis regarding oxygen supplements, mechanical ventilation, and continuous positive air pressure (CPAP) was performed. Results Five candidate SNPs were nominally associated with BPD-related phenotypes with effect directions not conflicting the original studies: rs11265269-CRP, rs1427793-NUAK1, rs2229569-SELL, rs1883617-VNN2, and rs4148913-CHST3. Four of these genes are involved in cell adhesion. Extending our analysis to all well-imputed SNPs of all candidate genes, the strongest association was rs45538638-ABCA3 with CPAP (p = 4.9 × 10−7, FDR = 0.004), an ABC transporter involved in surfactant formation. Conclusions Most of the previously reported associations could not be replicated. We found additional support for SNPs in CRP, NUAK1, SELL, VNN2, and ABCA3. Larger studies and meta-analyses are required to corroborate these findings. Impact Larger cohort for improved statistical power to detect genetic associations with bronchopulmonary dysplasia (BPD). Most of the previously reported genetic associations with BPD could not be replicated in this larger study. Among investigated immunological relevant candidate genes, additional support was found for variants in genes CRP, NUAK1, SELL, VNN2, and CHST3, four of them related to cell adhesion. rs45538638 is a novel candidate SNP in reported candidate gene ABC-transporter ABCA3. Results help to prioritize molecular candidate pathomechanisms in follow-up studies.
- Published
- 2020
22. Methylprednisolone pulse treatment improves ProSP-C trafficking in twins with SFTPC mutation: An isoform story?
- Author
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Ralph Epaud, Pascale Fanen, Abdel Aissat, Agathe Tarze, Elodie Nattes, Stéphanie Finet, Céline Delestrain, Valérie Delattre, Stéphanie Simon, Bruno Costes, and Elodie Duprat
- Subjects
Gene isoform ,Protein isoform ,Mutant ,Twins ,ABCA3 ,medicine.disease_cause ,030226 pharmacology & pharmacy ,Methylprednisolone ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Humans ,Protein Isoforms ,Pharmacology (medical) ,030212 general & internal medicine ,Pharmacology ,Messenger RNA ,Mutation ,biology ,Wild type ,Surfactant protein C ,respiratory system ,Molecular biology ,Pulmonary Surfactant-Associated Protein C ,A549 Cells ,biology.protein ,Lung Diseases, Interstitial - Abstract
Mutations in the gene encoding surfactant protein C (SP-C) cause interstitial lung disease (ILD), and glucocorticosteroid (GC) treatment is the most recognized therapy in children. We aimed to decipher the mechanisms behind successful GC treatment in twins carrying a BRICHOS c.566G > A (p.Cys189Tyr) mutation in the SP-C gene (SFTPC). METHODS: The twins underwent bronchoscopy before and after GC treatment and immunoblotting analysis of SP-C proprotein (proSP-C) and SP-C mature in bronchoalveolar fluid (BALF). Total RNA was extracted and analysed using quantitative real-time PCR assays. In A549 cells, the processing of mutated protein C189Y was studied by immunofluorescence and immunoblotting after heterologous expression of eukaryotic vectors containing wild type or C189Y mutant cDNA. RESULTS: Before treatment, BALF analysis identified an alteration of the proSP-C maturation process. Functional study of C189Y mutation in alveolar A549 cells showed that pro-SP-CC189Y was retained within the endoplasmic reticulum together with ABCA3. After 5 months of GC treatment with clinical benefit, the BALF analysis showed an improvement of proSP-C processing. SFTPC mRNA analysis in twins revealed a decrease in the expression of total SFTPC mRNA and a change in its splicing, leading to the expression of a second shorter proSP-C isoform. In A549 cells, the processing and the stability of this shorter wild-type proSP-C isoform was similar to that of the longer isoform, but the half-life of the mutated shorter isoform was decreased. These results suggest a direct effect of GC on proSP-C metabolism through reducing the SFTPC mRNA level and favouring the expression of a less stable protein isoform.
- Published
- 2020
23. Surfactant Protein Deficiency Syndrome in Childhood Interstitial Lung Disease
- Author
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Jagdev Singh, Adam Jaffe, André Schultz, and Hiran Selvadurai
- Subjects
medicine.medical_specialty ,Lung ,biology ,business.industry ,Interstitial lung disease ,Context (language use) ,Surfactant protein C ,Atelectasis ,ABCA3 ,medicine.disease ,chemistry.chemical_compound ,Endocrinology ,medicine.anatomical_structure ,Pulmonary surfactant ,chemistry ,Internal medicine ,medicine ,biology.protein ,business ,Adenosine triphosphate - Abstract
Surfactant, which was first identified in the 1920s is pivotal to lower the surface tension in alveoli of the lungs and helps to lower the work of breathing and prevents atelectasis. Surfactant proteins, such as surfactant protein B and surfactant protein C contribute to normal functioning of surfactant. Additionally, Adenosine Triphosphate Binding Cassette 3 and Thyroid Transcription Factor-1 are also integral for the normal structure and functioning of pulmonary surfactant. Through the study and improved understanding of surfactant over the decades, there is increasing interest into the study of childhood interstitial lung diseases (chILD) in the context of surfactant protein deficiencies. Surfactant protein deficiency syndrome (SPDS) is a group of rare diseases within the chILD group that is caused by genetic mutations of SFTPB, SPTPC, ABCA3 and TTF1 genes. This review article seeks to provide an overview of surfactant protein deficiencies in the context of chILD.
- Published
- 2020
24. Epitope mimicry analysis of SARS-COV-2 surface proteins and human lung proteins
- Author
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Sara Morsy and Ahmed Morsy
- Subjects
0301 basic medicine ,ABCA3 ,Biology ,Lung injury ,Major histocompatibility complex ,medicine.disease_cause ,Article ,Epitope ,03 medical and health sciences ,Epitopes ,0302 clinical medicine ,medicine ,Materials Chemistry ,Humans ,Physical and Theoretical Chemistry ,Lung ,Spectroscopy ,SARS-CoV-2 ,COVID-19 ,Membrane Proteins ,Virology ,Computer Graphics and Computer-Aided Design ,Molecular mimicry ,030104 developmental biology ,Membrane protein ,Acute respiratory distress ,biology.protein ,Homeobox ,MHC ,UniProt ,NKX2-1 ,030217 neurology & neurosurgery ,Autoimmune - Abstract
Background Autoimmune response after the infection of SARS-COV-2 is evident as more cases of Guillain Barre syndrome and Kawasaki disease are diagnosed. In this study, we aim to investigate a possible mechanism of autoimmune lung injury. Methods We extracted the peptide sequences of surface proteins of the SARS-COV-2 from the NCBI data protein. We used Blastp to assess the homologous sequences between the human proteins in the UNIPROT database that are associated with respiratory distress. Then, we filtered the homologous sequences to those selectively expressed in the lung and homologous to surface viral proteins. We then assessed the epitope sequences for MHC-I and MHC-II using recommended settings and reference MHC in the IEDB database. Results Homeobox protein 2.1 (NKX2-1) and ATP-binding cassette sub-family A member 3 (ABCA3) showed homologous sequence to both surface glycoproteins and envelope proteins. The HLA-DR and HLA-DQ had a similar binding pattern to ABCA3 as surface glycoproteins and envelope proteins, respectively. Other HLA molecules that had a similar binding pattern to SARS-COV-2 as human proteins were HLA-A and HLA-DP. Conclusion Our study indicates that there is a possible autoimmune mechanism underlying the acute respiratory distress syndrome in SARS-COV-2., Graphical abstract Image 1
- Published
- 2020
25. A Newly Observed Mutation of the ABCA3 Gene Causing Lethal Respiratory Failure of a Full-Term Newborn: A Case Report
- Author
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Martin Jouza, Tomas Jimramovsky, Eva Sloukova, Jakub Pecl, Anna Seehofnerova, Marta Jezova, Milan Urik, Lumir Kunovsky, Katerina Slaba, Petr Stourac, Martina Klincova, Jaroslav A. Hubacek, and Petr Jabandziev
- Subjects
0301 basic medicine ,Pediatrics ,medicine.medical_specialty ,Neonatal intensive care unit ,Palliative care ,lcsh:QH426-470 ,surfactant ,Case Report ,ABCA3 ,Compound heterozygosity ,03 medical and health sciences ,0302 clinical medicine ,children ,Pulmonary surfactant ,Genetics ,medicine ,Genetics (clinical) ,Full Term ,biology ,Respiratory distress ,business.industry ,respiratory failure ,respiratory distress syndrome ,3. Good health ,lcsh:Genetics ,030104 developmental biology ,Respiratory failure ,030220 oncology & carcinogenesis ,biology.protein ,Molecular Medicine ,business - Abstract
Respiratory distress syndrome caused by a secondary surfactant deficiency is one of the most common diagnoses requiring admission to the Neonatal Intensive Care Unit. We illustrate the case of a term female newborn without prenatal and peripartal risks. There had been significant signs of respiratory distress 4 h after delivery. The condition gradually worsened to the point of needing oscillatory ventilation. The most common infectious and non-infectious causes were excluded. Considering the course of illness, a congenital surfactant deficiency was suspected. There nevertheless was no significant improvement after administration of surfactant. Following a short period of palliative care, the child died at 34 days of age due to respiratory failure. DNA diagnostics revealed compound heterozygosity of ABCA3 functional mutations leading to the p.Pro147Leu and p.Pro246Leu exchanges. The second identified mutation of ABCA3 c.737C>T had not to date been described in connection with primary surfactant deficiency.
- Published
- 2020
26. Childhood interstitial lung disease due to compound heterozygous mutations of the ABCA3 gene
- Author
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Anna Marie Nathan, Kok Joo Chan, Chin Gan, Meow-Keong Thong, Surendran Thavagnanam, and Yusnita Yakob
- Subjects
Neonatal respiratory distress syndrome ,education.field_of_study ,Pediatrics ,medicine.medical_specialty ,biology ,Respiratory distress ,business.industry ,Genetic counseling ,Population ,Interstitial lung disease ,ABCA3 ,Gene mutation ,medicine.disease ,Compound heterozygosity ,biology.protein ,Medicine ,business ,education - Abstract
Introduction: Mutations in adenosine triphosphate-binding cassette transporter A3 (ABCA3) (OMIM:601615) gene was the commonest genetic cause for severe neonatal respiratory distress syndrome (RDS) and childhood interstitial lung disease (chILD). Most literature review has been from patients of Caucasian heritage. Case Description: We report a case of a term male newborn of South East Asian heritage that developed severe respiratory distress soon after birth, and diagnosis was made on clinical, radiological and genetic basis without lung biopsy. He was found to have compound heterozygous variants for the adenosine triphosphate-binding cassette transporter A3 (ABCA3) gene: a novel c.3364G>A (p.Glu1122Lys) variant and previously reported pathogenic c. 737C>T (p.Pro246Leu). The variant c.3364G>A (rs1233043384) was not previously identified in clinical/disease databases such as ClinVar and The Human Gene Mutation Database. Further analysis and bioinformatics study indicated this variant was likely pathogenic. Parental genetic studies revealed parents had one mutation each. Conclusion: Newborns with unexplained respiratory distress syndrome (RDS) and pulmonary surfactant deficiency should have genetic sequencing study. This will be vital for early diagnosis, disease prognostication, treatment planning such lung transplantation, genetic counseling and provide the molecular basis for prenatal diagnosis and pre-implantation genetic diagnosis. It is important to raise awareness of this condition in the Southeast Asia region. Further larger population-based studies are required to determine the frequency of this mutation in our population. ABCA3 deficiency should be considered in term babies who develop severe respiratory distress syndrome in this region.
- Published
- 2020
27. ABCA3 deficiency from birth to adulthood presenting as paediatric interstitial lung disease
- Author
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Nicole Graf, Peter R. Buchanan, Devesh Thakkar, John R. Wheatley, and Jin-Gun Cho
- Subjects
Pulmonary and Respiratory Medicine ,Pediatrics ,medicine.medical_specialty ,media_common.quotation_subject ,Nonsense ,Case Report ,Case Reports ,ABCA3 ,medicine.disease_cause ,Frameshift mutation ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Missense mutation ,surfactant dysfunction ,media_common ,lcsh:RC705-779 ,interstitial lung disease ,Mutation ,biology ,business.industry ,ABCA3 deficiency ,Clinical course ,Interstitial lung disease ,lcsh:Diseases of the respiratory system ,medicine.disease ,030228 respiratory system ,Respiratory failure ,030220 oncology & carcinogenesis ,paediatric lung disease ,biology.protein ,business - Abstract
Paediatric disorders of pulmonary surfactant may occur due to mutations involving surfactant proteins B and C, and ATP‐binding cassette subfamily A member 3 (ABCA3) genes. Recessive frameshift or nonsense ABCA3 mutations are associated with respiratory failure and neonatal death but milder phenotypes of ABCA3 deficiency due to missense, splice site, and insertion/deletions may result in survival beyond infancy. To date, only one case report describes the clinical course from birth to age 21 years and there are less than 10 adult cases. No guidelines exist for medical therapy due to the rarity of this condition. We describe the clinical course of a patient over 39 years and her younger brother who were both diagnosed at birth with an unspecified paediatric interstitial lung disease (ILD) and were eventually diagnosed with ABCA3 mutation in their adulthood. Our report highlights the minimal progression of the ABCA3‐related ILD without long‐term medications, but the development of dyspnoea due to progressive pulmonary hypertension and airflow obstruction., We describe the clinical progress of siblings who initially presented with an undifferentiated paediatric interstitial lung disease at birth which was eventually diagnosed in adulthood as pulmonary surfactant dysfunction due to ATP‐binding cassette subfamily A member 3 (ABCA3) mutations. Clinical deterioration was due to progressive pulmonary hypertension and a moderate decline in forced expiratory volume in 1 sec (FEV1), rather than progression of the interstitial lung disease.
- Published
- 2020
28. Utilizing Whole Exome Sequencing Reveals a Rare Inherited Variant in ABCA3 Gene
- Author
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Raja Rabah, Montaha Al-Iede, Belal Azab, Eman F. Badran, Luma Srour, Mousa A. Al-Abbadi, and Mariam Khanfar
- Subjects
Pathology ,medicine.medical_specialty ,Neonatal Diseases ,Respiratory distress ,biology ,business.industry ,ABCA3 ,biology.protein ,Medicine ,Lung tissue ,business ,Progressive respiratory failure ,Electron microscopic ,Gene ,Exome sequencing - Abstract
Respiratory distress syndrome (RDS) is one of the most common neonatal diseases causing early life morbidity and mortality. We present a case of a full-term baby born to consanguineous parents who died due to severe progressive respiratory failure (PRF). Whole exome sequencing (WES) identified a homozygous disease-causing variant in the ABCA3 gene. Histopathological and electron microscopic examination of postmortem lung tissue revealed characteristic findings consistent with congenital surfactant deficiency along with the ultrastructural evidence of ‘fried-egg’ like inclusions. Our study provides thorough clinical, radiological, and ultrastructural analysis of the variant’s clinical impact and elucidates WES’s valuable role in the molecular diagnosis of (PRF).
- Published
- 2020
29. Prognostic biomarkers related to breast cancer recurrence identified based on Logit model analysis
- Author
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Liang Li, Lili Lin, Xiaoying Zhou, Meng Wang, Chuanguang Xiao, Shusheng Qiu, Tong Han, Weike Sun, and Jun Chu
- Subjects
0301 basic medicine ,Oncology ,medicine.medical_specialty ,lcsh:Surgery ,Logit regression model ,Breast Neoplasms ,ABCA3 ,Logistic regression ,lcsh:RC254-282 ,03 medical and health sciences ,0302 clinical medicine ,Breast cancer ,Surgical oncology ,Recurrence ,Internal medicine ,medicine ,Biomarkers, Tumor ,Humans ,KEGG ,biology ,Proportional hazards model ,Breast cancer recurrence ,business.industry ,Research ,Gene Expression Profiling ,Correction ,lcsh:RD1-811 ,medicine.disease ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,Prognosis ,Gene Expression Regulation, Neoplastic ,030104 developmental biology ,Logistic Models ,030220 oncology & carcinogenesis ,Correlation analysis ,biology.protein ,Surgery ,Neoplasm Recurrence, Local ,business ,Biomarkers - Abstract
Background This study intended to determine important genes related to the prognosis and recurrence of breast cancer. Methods Gene expression data of breast cancer patients were downloaded from TCGA database. Breast cancer samples with recurrence and death were defined as poor disease-free survival (DFS) group, while samples without recurrence and survival beyond 5 years were defined as better DFS group. Another gene expression profile dataset (GSE45725) of breast cancer was downloaded as the validation data. Differentially expressed genes (DEGs) were screened between better and poor DFS groups, which were then performed function enrichment analysis. The DEGs that were enriched in the GO function and KEGG signaling pathway were selected for cox regression analysis and Logit regression (LR) model analysis. Finally, correlation analysis between LR model classification and survival prognosis was analyzed. Results Based on the breast cancer gene expression profile data in TCGA, 540 DEGs were screened between better DFS and poor DFS groups, including 177 downregulated and 363 upregulated DEGs. A total of 283 DEGs were involved in all GO functions and KEGG signaling pathways. Through LR model screening, 10 important feature DEGs were identified and validated, among which, ABCA3, CCL22, FOXJ1, IL1RN, KCNIP3, MAP2K6, and MRPL13, were significantly expressed in both groups in the two data sets. ABCA3, CCL22, FOXJ1, IL1RN, and MAP2K6 were good prognostic factors, while KCNIP3 and MRPL13 were poor prognostic factors. Conclusion ABCA3, CCL22, FOXJ1, IL1RN, and MAP2K6 may serve as good prognostic factors, while KCNIP3 and MRPL13 may be poor prognostic factors for the prognosis of breast cancer.
- Published
- 2020
30. Interstitial Lung Disease Secondary to ABCA3 Mutation Underscores the Importance of Considering Genetic Causes of Early Onset ILD
- Author
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K.M. Capaccione and M. Salvatore
- Subjects
biology ,business.industry ,Mutation (genetic algorithm) ,Cancer research ,biology.protein ,Interstitial lung disease ,Medicine ,ABCA3 ,business ,medicine.disease ,Early onset - Published
- 2020
31. A Term Neonatal Case With Lethal Respiratory Failure Associated With a Novel Homozygous Mutation in ABCA3 Gene
- Author
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Meili Wei, Liji Ma, Aiqin Han, and Haibo Fu
- Subjects
pulmonary surfactant ,Case Report ,030204 cardiovascular system & hematology ,ABCA3 ,medicine.disease_cause ,Pediatrics ,ABCA3 gene ,03 medical and health sciences ,Exon ,0302 clinical medicine ,030225 pediatrics ,Medicine ,Missense mutation ,interstitial lung diseases ,Gene ,Mutation ,full-term neonate ,Respiratory distress ,biology ,business.industry ,lethal respiratory distress syndrome ,Interstitial lung disease ,lcsh:RJ1-570 ,lcsh:Pediatrics ,medicine.disease ,Respiratory failure ,Pediatrics, Perinatology and Child Health ,Immunology ,biology.protein ,business - Abstract
The mutations in the ABCA3 (ATP-binding cassette transporter subfamily A member 3) gene could result in lethal respiratory distress syndrome (RDS) in neonates and interstitial lung disease (ILD) in infants and children. Here we describe a full-term newborn who manifested respiratory distress 20 minutes after birth and then gradually developed hypoxemic respiratory failure and died on 53 days of life. A homozygous missense mutation (c.746C >T) was identified in exon 8 of ABCA3 gene in the neonate by next generation sequencing, and the mutations were inherited from parents respectively. This homozygous mutation is firstly reported up to date.
- Published
- 2020
32. Mediastinal lymphadenopathy reflecting disease activity in an infant with chronic pneumonitis of infancy associated with surfactant protein C mutation: a case report and literature review
- Author
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Sang Hoon Lee, Hwa Jin Cho, Eun Lee, Young Ok Kim, Yoo-Duk Choi, and In Seok Jeong
- Subjects
Pulmonary and Respiratory Medicine ,Mutation ,Pathology ,medicine.medical_specialty ,biology ,Mediastinal lymphadenopathy ,business.industry ,Interstitial lung disease ,Case Report ,Surfactant protein C ,ABCA3 ,medicine.disease ,medicine.disease_cause ,Hypoxemia ,medicine ,biology.protein ,medicine.symptom ,Respiratory system ,business ,Pneumonitis - Abstract
Chronic pneumonitis of infancy (CPI) is a rare interstitial lung disease (ILD) that can be fatal in some cases. It occurs in infants who initially appear well and then develop respiratory symptoms with hypoxemia and diffuse interstitial infiltrates (1). Recently, the development of molecular genetic techniques has been rapidly increasing the understanding of the cause of CPI, and mutations in related genes encoding proteins such as surfactant protein (SP)-B, SP-C and ATP-binding cassette protein family A3 (ABCA3) have been identified as a representative cause (2).
- Published
- 2018
33. MicroRNA‐326 and microRNA‐200c: Two novel biomarkers for diagnosis and prognosis of pediatric acute lymphoblastic leukemia
- Author
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Soheila Rahgozar and Elaheh Sadat Ghodousi
- Subjects
Male ,0301 basic medicine ,Drug resistance ,ABCA2 ,ABCA3 ,Biochemistry ,03 medical and health sciences ,0302 clinical medicine ,Antineoplastic Combined Chemotherapy Protocols ,microRNA ,Biomarkers, Tumor ,Humans ,Medicine ,Child ,Molecular Biology ,Childhood Acute Lymphoblastic Leukemia ,biology ,business.industry ,Cell Biology ,Precursor Cell Lymphoblastic Leukemia-Lymphoma ,Minimal residual disease ,Gene Expression Regulation, Neoplastic ,Multiple drug resistance ,MicroRNAs ,030104 developmental biology ,medicine.anatomical_structure ,Drug Resistance, Neoplasm ,Case-Control Studies ,030220 oncology & carcinogenesis ,biology.protein ,Cancer research ,ATP-Binding Cassette Transporters ,Female ,Bone marrow ,business - Abstract
Multidrug resistance (MDR) is considered as the major obstacle for treating pediatric acute lymphoblastic leukemia (ALL). MicroRNAs (miRNAs) are small non coding RNAs which may potentially regulate response to chemotherapy. In this study, total RNA was isolated from bone marrow samples of 46 children with de novo ALL and 16 controls. Quantitative reverse transcriptase polymerase chain reaction was used to investigate the expression profile of the predicted miRNAs; miR-326 and miR-200c, and their predicted targets ABCA2, and ABCA3 transporters. The presence of minimal residual disease was studied using PCR-SSCP (single-strand conformation polymorphism) 1 year after treatment. The association between the miRNA expression and drug resistance was analyzed statistically. Results showed a significant down-regulation of both miR-326 and miR-200c expressions in ALL patients compared with non-cancer controls (P = 0.0002, AUC = 0.813 and P = 0.035, AUC = 0.79, respectively). A considerable negative association between miR-326 expression and MDR was identified which could raise the risk of chemoresistance by 4.8- fold. The expression profiles of miR-326 and ABCA2 transporter were inversely correlated. Data revealed, a novel diagnostic role for miR-326 and miR-200c as potential biomarkers of pediatric ALL. Down-regulation of miR-326 was introduced, for the first time, as a prognostic factor for drug resistance in childhood ALL. To the best of our knowledge, this is the first time that ABCA2 transporter is proposed as a target gene for miR-326, through which it can exert its impact on drug resistance. These data may provide novel approaches to new therapeutics and diagnostics.
- Published
- 2018
34. ABCA3 missense mutations causing surfactant dysfunction disorders have distinct cellular phenotypes
- Author
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Ulrike Schindlbeck, Matthias Griese, Jan Hegermann, Gerhard Liebisch, Susanna Kinting, Stefanie Höppner, and Thomas Wittmann
- Subjects
0301 basic medicine ,Mutation, Missense ,ABCA3 ,medicine.disease_cause ,03 medical and health sciences ,0302 clinical medicine ,Genetics ,medicine ,Humans ,Missense mutation ,Genetic Predisposition to Disease ,Gene ,Genetics (clinical) ,Surfactant homeostasis ,Mutation ,biology ,Protein subcellular localization prediction ,Phenotype ,030104 developmental biology ,030228 respiratory system ,A549 Cells ,biology.protein ,ATP-Binding Cassette Transporters ,Lung Diseases, Interstitial ,Intracellular - Abstract
Mutations in the ATP-binding cassette subfamily A member 3 (ABCA3) gene are the most common monogenetic cause of surfactant dysfunction disorders in newborns and interstitial lung diseases in children and young adults. Although the effect of mutations resulting in truncated or incomplete proteins can be predicted, the consequences of missense variants cannot be as easily. Our aim was to investigate the intracellular handling and disturbance of the cellular surfactant system in a stable cell model with several different clinically relevant ABCA3 missense mutations. We found that the investigated missense mutations within the ABCA3 gene affect surfactant homeostasis in different ways: first by disrupting intracellular ABCA3 protein localization (c. 643C > A, p. Q215K; c. 2279T > G, p. M760R), second by impairing the lipid transport of ABCA3 protein (c. 875A > T, p. E292V; c. 4164G > C, p. K1388N), and third by yet undetermined mechanisms predisposing for the development of interstitial lung diseases despite correct localization and normal lipid transport of the variant ABCA3 protein (c. 622C > T, p. R208W; c. 863G > A, p. R288K; c. 2891G > A, p. G964D). In conclusion, we classified cellular consequences of missense ABCA3 sequence variations leading to pulmonary disease of variable severity. The corresponding molecular pathomechanisms of such ABCA3 variants may specifically be addressed by targeted treatments.
- Published
- 2018
35. Heterozygous Mutations in OAS1 Cause Infantile-Onset Pulmonary Alveolar Proteinosis with Hypogammaglobulinemia
- Author
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Mari Tanaka-Kubota, Masafumi Yamada, Hisanori Minakami, Itaru Hayasaka, Mishie Tanino, Kazunaga Agematsu, Hirokazu Kanegane, Kazutoshi Cho, Atsushi Fujita, Noriko Miyake, Tadashi Ariga, Takuma Akimoto, Norimoto Kobayashi, Koh Nakata, Masahiro Ueki, Kazuhiro Ogata, Naomichi Matsumoto, Satoru Ikemoto, Masaaki Shiina, and Satoshi Miyamoto
- Subjects
Male ,Models, Molecular ,0301 basic medicine ,Heterozygote ,hypogammaglobulinemia ,Sequence analysis ,Pulmonary Alveolar Proteinosis ,Biology ,ABCA3 ,Evolution, Molecular ,Hypogammaglobulinemia ,03 medical and health sciences ,0302 clinical medicine ,Agammaglobulinemia ,Report ,030225 pediatrics ,2',5'-Oligoadenylate Synthetase ,Genetics ,medicine ,Humans ,Missense mutation ,Family ,Genetics(clinical) ,Amino Acid Sequence ,Gene ,Genetics (clinical) ,Demography ,Base Sequence ,Catabolism ,2',5'-oligoadenylate synthetase 1 ,GATA2 ,Infant ,medicine.disease ,Molecular biology ,OAS1 ,PAP ,030104 developmental biology ,Mutation ,biology.protein ,Female ,alveolar macrophage ,Pulmonary alveolar proteinosis - Abstract
Pulmonary alveolar proteinosis (PAP) is characterized by accumulation of a surfactant-like substance in alveolar spaces and hypoxemic respiratory failure. Genetic PAP (GPAP) is caused by mutations in genes encoding surfactant proteins or genes encoding a surfactant phospholipid transporter in alveolar type II epithelial cells. GPAP is also caused by mutations in genes whose products are implicated in surfactant catabolism in alveolar macrophages (AMs). We performed whole-exome sequence analysis in a family affected by infantile-onset PAP with hypogammaglobulinemia without causative mutations in genes associated with PAP: SFTPB , SFTPC , ABCA3 , CSF2RA , CSF2RB , and GATA2 . We identified a heterozygous missense variation in OAS1 , encoding 2,′5′-oligoadenylate synthetase 1 (OAS1) in three affected siblings, but not in unaffected family members. Deep sequence analysis with next-generation sequencing indicated 3.81% mosaicism of this variant in DNA from their mother's peripheral blood leukocytes, suggesting that PAP observed in this family could be inherited as an autosomal-dominant trait from the mother. We identified two additional de novo heterozygous missense variations of OAS1 in two unrelated simplex individuals also manifesting infantile-onset PAP with hypogammaglobulinemia. PAP in the two simplex individuals resolved after hematopoietic stem cell transplantation, indicating that OAS1 dysfunction is associated with impaired surfactant catabolism due to the defects in AMs.
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- 2018
36. Generation of an induced pluripotent stem cell line from a patient with surfactant metabolism dysfunction carrying ABCA3 mutations
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Xiaojuan Yin, Liu He, Jinghan Chi, Danhua Zhao, Yan Ke, Jia Chen, Zhichen Tian, Zhichun Feng, Yanmei He, and Xuan Zhang
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Male ,0301 basic medicine ,QH301-705.5 ,Protein subunit ,Induced Pluripotent Stem Cells ,Biology ,ABCA3 ,Compound heterozygosity ,Pathogenesis ,Surface-Active Agents ,03 medical and health sciences ,0302 clinical medicine ,Pulmonary surfactant ,medicine ,Humans ,Surfactant metabolism dysfunction ,Biology (General) ,Induced pluripotent stem cell ,Gene ,Infant ,Cell Biology ,General Medicine ,medicine.disease ,030104 developmental biology ,Mutation ,biology.protein ,Cancer research ,ATP-Binding Cassette Transporters ,Lung Diseases, Interstitial ,030217 neurology & neurosurgery ,Developmental Biology - Abstract
Surfactant dysfunction is a genetically heterogeneous pulmonary disease that causes dyspnea. ATP binding cassette protein transporter subunit A3 (ABCA3) is the main pathogenic gene of pulmonary surfactant dysfunction. In this study, we established an induced pluripotent stem cell line (SMCPGHi001-A) from the peripheral blood cells of a 49-day-old male infant, carrying compound heterozygous variations of the ABCA3 gene (c.3997_3998del, p.R1333fs, and c.3137C > T, p.A1046V). This iPSC line would be a useful tool to study the pathogenesis, disease development, and treatment of pulmonary surfactant dysfunction.
- Published
- 2021
37. Variants of the ABCA3 gene might contribute to susceptibility to interstitial lung diseases in the Chinese population
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Xiaofen Wang, Wei Zhou, Yaping Wang, Qingya Zhao, Jiapeng Sun, Lizhi Xu, and Yi Zhuang
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Male ,0301 basic medicine ,China ,Genotype ,Science ,ABCA3 ,Article ,Germline ,03 medical and health sciences ,Idiopathic pulmonary fibrosis ,Sex Factors ,0302 clinical medicine ,Asian People ,medicine ,Humans ,Missense mutation ,Genetic Predisposition to Disease ,Allele frequency ,Alleles ,Genetic Association Studies ,Aged ,Multidisciplinary ,Lung ,Respiratory distress ,biology ,business.industry ,Interstitial lung disease ,Genetic Variation ,High-Throughput Nucleotide Sequencing ,Exons ,Middle Aged ,respiratory system ,medicine.disease ,respiratory tract diseases ,030104 developmental biology ,medicine.anatomical_structure ,030228 respiratory system ,Immunology ,biology.protein ,Medicine ,ATP-Binding Cassette Transporters ,Female ,Lung Diseases, Interstitial ,business - Abstract
ATP-binding cassette A3 (ABCA3) is a phospholipid carrier that is mainly expressed in the alveolar epithelium. Biallelic mutations of ABCA3 has been associated with fatal respiratory distress syndrome and interstitial lung disease (ILD) in children. However, whether variations in ABCA3 have a role in the development of adult ILD, including idiopathic pulmonary fibrosis (IPF), remains to be addressed. In this study, we screened for germline variants of ABCA3 by exons-sequencing in 30 patients with sporadic IPF and in 30 matched healthy controls. Eleven missense variants, predominantly in heterozygous, were found in 13 of these patients, but only two missenses in 2 healthy controls. We then selected four of the detected missense variants (p.L39V, p.S828F, p.V968M and p.G1205R) to performed cohort analysis in 1,024 ILD patients, containing 250 IPF and 774 connective tissue disease-ILD (CTD-ILD) patients, and 1,054 healthy individuals. Our results showed that the allele frequency of p.G1205R, but not p.L39V, was significantly higher in ILD patients than in healthy controls. However, no additional subject carrying the variant p.S828F or p.V968M was detected in the cohort analysis. These results indicate that the heterozygous ABCA3 gene variants may contribute to susceptibility to diseases in the Chinese population.
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- 2017
38. Aberrant lung remodeling in a mouse model of surfactant dysregulation induced by modulation of the Abca3 gene
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Lars Knudsen, Yaniv Tomer, Surafel Mulugeta, Matthias Ochs, Julian Maronn, Ming Zhao, and Michael F. Beers
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Lung Diseases ,0301 basic medicine ,Pathology ,medicine.medical_specialty ,Gene Expression ,ABCA3 ,Lung injury ,Lamellar granule ,Bleomycin ,Article ,Mice ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,medicine ,Extracellular ,Animals ,Homeostasis ,Gene Knock-In Techniques ,Lung ,Alleles ,Phospholipids ,biology ,medicine.diagnostic_test ,Wild type ,Pulmonary Surfactants ,General Medicine ,Molecular biology ,Anti-Bacterial Agents ,Mice, Inbred C57BL ,030104 developmental biology ,Bronchoalveolar lavage ,medicine.anatomical_structure ,030228 respiratory system ,chemistry ,biology.protein ,ATP-Binding Cassette Transporters ,Anatomy ,Lung Diseases, Interstitial ,Bronchoalveolar Lavage Fluid ,Developmental Biology - Abstract
The lipid transporter, ATP binding cassette class A3 (ABCA3), plays a critical role in the biogenesis of alveolar type 2 (AT2) cell lamellar bodies (LBs). A relatively large number of mutations in the ABCA3 gene have been identified in association with diffuse parenchymal lung disease (DPLD), the most common of which is a missense mutation (valine substitution for lysine at residue 292 (ABCA3E292V)) that leads to functional impairment of the transporter in vitro. The consequences of ABCA3E292V gene expression in vivo are unknown. To address this question, we developed mouse models expressing ABCA3E292V knocked-in to the endogenous mouse locus. The parental (F1) mouse line (mAbca3E292V) that retained an intronic pgk-Neo selection cassette (inserted in reverse orientation) (mAbca3E292V–rNeo) demonstrated an allele dependent extracellular surfactant phospholipid (PL) deficiency. We hypothesize that this PL deficiency leads to aberrant parenchymal remodeling contributing to the pathophysiology of the DPLD phenotype. Compared to wild type littermates, baseline studies of mice homozygous for the pgk-Neo insert (mAbca3E292V–rNeo+/+) revealed nearly 50% reduction in bronchoalveolar lavage (BAL) PL content that was accompanied by quantitative reduction in AT2 LB size with a compensatory increase in LB number. The phenotypic alteration in surfactant lipid homeostasis resulted in an early macrophage predominant alveolitis which peaked at 8 weeks of age. This was followed by age-dependent development of histological DPLD characterized initially by peribronchial inflammatory cell infiltration and culminating in both an emphysema-like phenotype (which included stereologically quantifiable reductions in both alveolar septal surface area and volume of septal wall tissue) plus foci of trichrome-positive collagen deposition together with substantial proliferation of hyperplastic AT2 cells. In addition to spontaneous lung remodeling, mABCA3E292V–rNeo mice were rendered more vulnerable to exogenous injury. Three weeks following intratracheal bleomycin challenge, mAbca3–rNeo mice demonstrated allele-dependent susceptibility to bleomycin including enhanced weight loss, augmented airspace destruction, and increased fibrosis. Removal of the rNeo cassette from mAbca3 alleles resulted in restoration of BAL PL content to wild-type levels and an absence of changes in lung histology up to 32 weeks of age. These results support the importance of surfactant PL homeostasis as a susceptibility factor for both intrinsic and exogenously induced lung injury/remodeling.
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- 2017
39. Lung disease caused by ABCA3 mutations
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Thomas Schaible, Charalampos Aslanidis, Daniela Rauch, Marijke Proesmans, Jürgen Seidenberg, Nazan Cobanoglu, Simone Reu, Meike Hengst, Matthias Kappler, Ernst Eber, Ayse Tana Aslan, Frank Brasch, Tugba Sismanlar, Susanne Terheggen-Lagro, Nicolas Regamey, Thomas Wittmann, Nicolaus Schwerk, Veronika Teusch, Matthias Griese, Ralf Zarbock, Peter Lohse, Mathias Klemme, Ilaria Campo, Carolin Kröner, and Paediatric Pulmonology
- Subjects
0301 basic medicine ,Pulmonary and Respiratory Medicine ,Neonatal respiratory distress syndrome ,medicine.medical_specialty ,Pediatrics ,Lung ,biology ,business.industry ,Hydroxychloroquine ,Retrospective cohort study ,ABCA3 ,medicine.disease ,Compound heterozygosity ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,medicine.anatomical_structure ,030228 respiratory system ,Internal medicine ,Cohort ,medicine ,biology.protein ,business ,Survival analysis ,medicine.drug - Abstract
Background Knowledge about the clinical spectrum of lung disease caused by variations in the ATP binding cassette subfamily A member 3 (ABCA3) gene is limited. Here we describe genotype-phenotype correlations in a European cohort. Methods We retrospectively analysed baseline and outcome characteristics of 40 patients with two disease-causing ABCA3 mutations collected between 2001 and 2015. Results Of 22 homozygous (15 male) and 18 compound heterozygous patients (3 male), 37 presented with neonatal respiratory distress syndrome as term babies. At follow-up, two major phenotypes are documented: patients with (1) early lethal mutations subdivided into (1a) dying within the first 6 months or (1b) before the age of 5 years, and (2) patients with prolonged survival into childhood, adolescence or adulthood. Patients with null/null mutations predicting complete ABCA3 deficiency died within the 1st weeks to months of life, while those with null/other or other/other mutations had a more variable presentation and outcome. Treatment with exogenous surfactant, systemic steroids, hydroxychloroquine and whole lung lavages had apparent but many times transient effects in individual subjects. Conclusions Overall long-term (>5 years) survival of subjects with two disease-causing ABCA3 mutations was
- Published
- 2017
40. The biology of the ABCA3 lipid transporter in lung health and disease
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Michael F. Beers and Surafel Mulugeta
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Lung Diseases ,0301 basic medicine ,Histology ,Context (language use) ,Disease ,Gene mutation ,ABCA3 ,Compound heterozygosity ,Article ,Pathology and Forensic Medicine ,Surface-Active Agents ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Animals ,Humans ,Lung ,biology ,Biological Transport ,Cell Biology ,Lipids ,Molecular medicine ,Human genetics ,030104 developmental biology ,medicine.anatomical_structure ,030228 respiratory system ,Health ,Immunology ,biology.protein ,ATP-Binding Cassette Transporters - Abstract
The lipid transporter, ATP binding cassette, class A3 (ABCA3) is a highly conserved multi-membrane spanning protein that plays a critical role in the regulation of pulmonary surfactant homeostasis. Mutations in ABCA3 have been increasingly recognized as one of the causes of inherited pulmonary diseases. These monogenic disorders produce familial lung abnormalities with pathological presentations ranging from neonatal surfactant deficiency-induced respiratory failure to childhood or adult diffuse parenchymal lung diseases for which specific treatment modalities remain quite limited. More than 200 ABCA3 mutations have been reported to date with approximately three quarters of patients presenting as compound heterozygotes. Recent advances in our understanding of the molecular basis underlying normal ABCA3 biosynthesis and processing, as well as the mechanisms of alveolar epithelial cell dysregulation caused by the expression of its mutant forms, are beginning to emerge. These insights, as well as the role of environmental factors and modifier genes, are discussed in the context of the considerable variability in disease presentation observed in patients with identical ABCA3 gene mutations. Moreover, the opportunities afforded by an enhanced understanding of ABCA3 biology for targeted therapeutic strategies are addressed.
- Published
- 2016
41. Déficit congénito de proteína de surfactante: caso clínico
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Héctor I. Pérez, María Beatriz Milet, Tatiana Espinoza, and Patricia Mena N
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Congenital deficiency of surfactant protein B ,Pathology ,medicine.medical_specialty ,Interstitial pneumonitis ,Genetic counseling ,ABCA3 ,Déficit congénito de proteína de surfactante ,03 medical and health sciences ,0302 clinical medicine ,Pulmonary surfactant ,Recién nacido ,Protein C deficiency ,030225 pediatrics ,Surfactant Protein B Deficiency ,Medicine ,Pediatrics, Perinatology, and Child Health ,Respiratory distress ,biology ,business.industry ,Newborn ,medicine.disease ,030228 respiratory system ,Pediatrics, Perinatology and Child Health ,biology.protein ,Immunohistochemistry ,Differential diagnosis ,Neumonitis intersticial ,business - Abstract
ResumenIntroducciónEl déficit congénito de surfactante es una entidad de diagnóstico inhabitual en recién nacidos. Se reporta un caso clínico de déficit de proteína B del surfactante, se revisa el estudio, tratamiento y diagnóstico diferencial de los déficit de proteínas del surfactante y enfermedad crónica intersticial de la infancia.Caso clínicoRecién nacido de término que cursa dificultad respiratoria, con velamiento pulmonar recurrente y respuesta transitoria a administración de surfactante. El estudio inmunohistoquímico y genético confirmaron diagnóstico de déficit de proteína B de surfactante.ConclusionesLa enfermedad pulmonar congénita requiere un alto índice de sospecha. El déficit de proteína B de surfactante genera un cuadro clínico progresivo y mortal en la mayoría de los casos, al igual que el déficit de transportador ATP binding cassette, sub-family A member 3 (ABCA3). El déficit de proteína C es insidioso y puede presentarse con un patrón radiológico pulmonar intersticial. Debido a la similitud en el patrón histológico, el estudio genético permite una mayor certeza en el pronóstico y la posibilidad de entregar un adecuado consejo genético.AbstractIntroductionCongenital surfactant deficiency is a condition infrequently diagnosed in newborns. A clinical case is presented of surfactant protein B deficiency. A review is performed on the study, treatment and differential diagnosis of surfactant protein deficiencies and infant chronic interstitial lung disease.Case reportThe case is presented of a term newborn that developed respiratory distress, recurrent pulmonary opacification, and a transient response to the administration of surfactant. Immunohistochemical and genetic studies confirmed the diagnosis of surfactant protein B deficiency.ConclusionsPulmonary congenital anomalies require a high index of suspicion. Surfactant protein B deficiency is clinically progressive and fatal in the majority of the cases, similar to that of ATP binding cassette subfamily A member 3 (ABCA3) deficiency. Protein C deficiency is insidious and may present with a radiological pulmonary interstitial pattern. Due to the similarity in the histological pattern, genetic studies help to achieve greater certainty in the prognosis and the possibility of providing adequate genetic counselling.
- Published
- 2016
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42. Functional Characterization of ATP-Binding Cassette Transporter A3 Mutations from Infants with Respiratory Distress Syndrome
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F. Sessions Cole, Jennifer A. Wambach, Sergey A. Kaliberov, Daniel J. Wegner, Ping Yang, Aaron Hamvas, Frances V. White, Brian P. Hackett, Hillary B. Heins, David T. Curiel, and Lyudmila N. Kaliberova
- Subjects
0301 basic medicine ,Pulmonary and Respiratory Medicine ,Immunoblotting ,Clinical Biochemistry ,Mutant ,Fluorescent Antibody Technique ,ATP-binding cassette transporter ,Biology ,ABCA3 ,Adenoviridae ,03 medical and health sciences ,0302 clinical medicine ,030225 pediatrics ,Humans ,Molecular Biology ,Gene ,Original Research ,Adenosine Triphosphatases ,Organelles ,Genetics ,Respiratory Distress Syndrome, Newborn ,HEK 293 cells ,Wild type ,Infant ,Cell Biology ,Phospholipid transport ,Phenotype ,HEK293 Cells ,030104 developmental biology ,A549 Cells ,Mutation ,Immunology ,biology.protein ,ATP-Binding Cassette Transporters ,Mutant Proteins ,Subcellular Fractions - Abstract
Mutations in the ATP-binding cassette transporter A3 gene (ABCA3) result in severe neonatal respiratory distress syndrome and childhood interstitial lung disease. As most ABCA3 mutations are rare or private, determination of mutation pathogenicity is often based on results from in silico prediction tools, identification in unrelated diseased individuals, statistical association studies, or expert opinion. Functional biologic studies of ABCA3 mutations are needed to confirm mutation pathogenicity and inform clinical decision making. Our objective was to functionally characterize two ABCA3 mutations (p.R288K and p.R1474W) identified among term and late-preterm infants with respiratory distress syndrome with unclear pathogenicity in a genetically versatile model system. We performed transient transfection of HEK293T cells with wild-type or mutant ABCA3 alleles to assess protein processing with immunoblotting. We used transduction of A549 cells with adenoviral vectors, which concurrently silenced endogenous ABCA3 and expressed either wild-type or mutant ABCA3 alleles (p.R288K and p.R1474W) to assess immunofluorescent localization, ATPase activity, and organelle ultrastructure. Both ABCA3 mutations (p.R288K and p.R1474W) encoded proteins with reduced ATPase activity but with normal intracellular localization and protein processing. Ultrastructural phenotypes of lamellar body–like vesicles in A549 cells transduced with mutant alleles were similar to wild type. Mutant proteins encoded by ABCA3 mutations p.R288K and p.R1474W had reduced ATPase activity, a biologically plausible explanation for disruption of surfactant metabolism by impaired phospholipid transport into the lamellar body. These results also demonstrate the usefulness of a genetically versatile, human model system for functional characterization of ABCA3 mutations with unclear pathogenicity.
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- 2016
43. Surfactant deficiency syndrome in an infant with a C‐terminal frame shift in ABCA3: A case report
- Author
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Anthony J. Fischer and Nour Akil
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0301 basic medicine ,Pulmonary and Respiratory Medicine ,Male ,Pulmonary Surfactant-Associated Proteins ,DNA Mutational Analysis ,Case Report ,ABCA3 ,Lamellar granule ,medicine.disease_cause ,Frameshift mutation ,Alveolar cells ,03 medical and health sciences ,0302 clinical medicine ,Pulmonary surfactant ,Gastroscopy ,Medicine ,Humans ,genetics ,Frameshift Mutation ,childhood ,chemistry.chemical_classification ,Mutation ,Respiratory Distress Syndrome, Newborn ,biology ,business.industry ,interstitial lung disease (ILD) ,Infant, Newborn ,Amino acid ,Cell biology ,030104 developmental biology ,medicine.anatomical_structure ,Treatment Outcome ,chemistry ,surfactant biology and pathophysiology ,Pediatrics, Perinatology and Child Health ,biology.protein ,ATP-Binding Cassette Transporters ,business ,Sequence motif ,030217 neurology & neurosurgery ,Case Report Published Online - Abstract
Deficiency in ATP binding cassette A3 (ABCA3) causes neonatal respiratory distress, hypoxemic respiratory failure, and interstitial lung disease. ABCA3 transports phospholipids into the lamellar bodies of type II alveolar cells, a critical step in alveolar surfactant production. We report a term infant with ABCA3 surfactant deficiency syndrome with the E292V (c.875A>T; p.Glu292Val) mutation in trans with a novel C‐terminal frame shift mutation (c.4938delC; p.Met1647fs). This mutation removes the final 58 amino acids and substitutes 33 incorrect amino acids. The frame shift spares membrane spanning and nucleotide binding domains, but disrupts a highly conserved C‐terminal domain, which includes sequence motifs necessary for the function of human paralogs ABCA1, ABCA4, and the bacterial homolog DrrA. This observation suggests the C‐terminal domain is also required for normal function of ABCA3.
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- 2018
44. Regulation disorders of pulmonary lipid metabolism in chronic obstructive pulmonary disease
- Author
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Stanislav Kotlyarov and Aleksei Bulgakov
- Subjects
COPD ,Lung ,biology ,Apolipoprotein B ,Apolipoprotein L1 ,business.industry ,Reverse cholesterol transport ,ABCA3 ,medicine.disease ,medicine.anatomical_structure ,ABCG1 ,Immunology ,medicine ,biology.protein ,Respiratory epithelium ,lipids (amino acids, peptides, and proteins) ,business - Abstract
Chronic obstructive pulmonary disease (COPD) is one of the most socially significant respiratory diseases. The development and progression of COPD is mainly associated with smoking, which leads to chronic inflammation of the respiratory tract, including both cellular and humoral immunological processes. Contribution in immune defense of the lungs of ATP-transporters (ABC) is of great interest. Three lipid transporters ABCA1, ABCG1 and ABCA3 are expressed in lung cells. The first two contribute to reverse cholesterol transport, ABCA3 is involved in surfactant formation. Objective: study the expression of ABCA1, ABCG1 and ABCA3 genes in smoking and COPD. Methods: the analysis was carried out on previously studied data sets (gene sets) obtained from the expression of Omnibus (GEO) genes. Results: gene expression in alveolar macrophages in smokers (set GSE2125) showed a significant decrease of gene expression of ABCA1, ABCG1, apolipoprotein L1, L3, L4. Gene expression in airway epithelium in smokers (sets GSE4498, GSE3320, GSE11906), showed no significant changes of gene expression ABCA1, ABCA3, ABCG1, apolipoprotein L3 and L6. Gene expression in alveolar epithelial type II cells in patients with COPD showed a significant decrease in the expression of genes ABCA1, ABCA3, ABCG1, apolipoprotein L1, L3, L6, increased expression of TLR3, TLR4 compared with healthy individuals (set GSE29133). Conclusion: smoking disrupts the reverse transport of cholesterol in macrophages and alveolar epithelium, which probably serves as a mechanism of inflammation progression, reduces the expression of apolipoprotein L, whose function is not well known, but is considered to be involved in immune processes.
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- 2019
45. P371 Two missed diagnosed patients with STING-associated vasculopathy with onset in infancy in china
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Yao Cao and Liping Jiang
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medicine.medical_specialty ,biology ,business.industry ,Interstitial lung disease ,Disease ,ABCA3 ,medicine.disease ,Dermatology ,Skin Abscess ,Sting ,Stimulator of interferon genes ,Pulmonary fibrosis ,biology.protein ,medicine ,Differential diagnosis ,business - Abstract
Background and aims Stimulator of interferon genes (STING)-associated vasculopathy with onset in infancy (SAVI) is firstly described in 2014 as a type I interferonopathy that resulting from heterozygous mutations of TMEM173. This gene encodes the STING adaptor protein, and mutations lead to a gain of function on STING and overproduction of interferon beta. SAVI is characterized by neonatal-onset systemic inflammation, a severe cutaneous vasculopathy and interstitial lung disease. JAK inhibitors are considered as an effective therapeutic strategy. We sought to describe two missed diagnosed patients with SAVI (P1 and P2) in order to draw attention to this illness. Methods The clinical data were collected and Sanger sequencing of the gene TMEM173 was performed. An introspection of missed diagnosis and differential diagnosis was discussed. Results The two boys shared similar manifestations including recurrent skin abscess in winter with skin lesions and recurrent respiratory tract infections since their births. It occurred to us neutrophil defects like CGD but NBT test and DHR123 were normal for both of them in 2011. Peroxidase staining was positive and no mutations in MYD88 (P1). Computed tomography of the chest revealed pulmonary fibrosis yet no relevant genes (including ABCA3, SFTPC) mutations were found. Joint pain was significant for P2 but Naproxen was ineffective. Treatments with antibiotics turned out little improvement and wouldn’t prevent the progression. Finally, both of them died of respiratory and circulatory failure in 2012 and 2016 respectively. Recently, genetic mutations (c.463 G>A and c.461 A>G) in exon5 of TMEM173 were discovered, confirming the diagnosis of SAVI. Conclusions Owing to unfamiliarity with this disease, some cases would have been misdiagnosed or missed diagnosed. Thus, we propose that SAVI should be taken into consideration for children with chilblain skin lesions and pulmonary fibrosis after ruling out other related genes mutations.
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- 2019
46. Genetic basis of surfactant dysfunction in Chinese children: A retrospective study
- Author
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Hongling Ma, Kunling Shen, Yuejie Zheng, Jiehua Chen, Wei Ji, Guangmin Nong, Xiu-Yun Liu, Deyu Zhao, and Heping Wang
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Male ,Pulmonary and Respiratory Medicine ,China ,medicine.medical_specialty ,Genotype ,ABCA3 ,Compound heterozygosity ,03 medical and health sciences ,Exon ,0302 clinical medicine ,Asian People ,030225 pediatrics ,Molecular genetics ,Internal medicine ,Prevalence ,medicine ,Humans ,Child ,Retrospective Studies ,biology ,business.industry ,Interstitial lung disease ,Infant ,Retrospective cohort study ,medicine.disease ,Pulmonary Surfactant-Associated Protein C ,030228 respiratory system ,Mutation ,Pediatrics, Perinatology and Child Health ,Etiology ,biology.protein ,ATP-Binding Cassette Transporters ,Female ,Lung Diseases, Interstitial ,business - Abstract
Objective To investigate the prevalence of surfactant dysfunction (SD) and the genotype distribution in Chinese childhood interstitial lung disease (chILD). Methods From December 2013 to December 2016, whole exons and splicing regions of surfactant protein (SP)-B, SP-C, and adenosine triphosphate (ATP)-binding cassette subfamily A member 3 (ABCA3) were sequenced in chILD with unknown etiology in five children's medical centers of China. The sequencing was performed by Next-generation sequencing technique in a molecular genetics laboratory. The clinical and genetic data were reviewed retrospectively. Results In total, 136 patients of age 3 months to 13 years (mean 12.5 ± 9.4 months) were recruited, among which 76 were males. Of the 136 cases of chILD, 13.2% (18 of 136) were diagnosed with SD. In these 18 SD cases, 15 had heterozygous SP-C deficiencies, two cases had compound heterozygous ABCA3 deficiencies, and no SP-B deficiency was identified. In SP-C deficiencies, there were six cases with p.I73T, 2 with p.I73N, 5 with p.V39L, 1 with c.417delA, and 1 case with IVS4, +1G>C. Two cases of ABCA3 mutation were heterozygous with c.1755delC and c.2890G>A; c.3913T>C (R1305W) and exon 13 to 18 deletion. One was negative by sequencing while diagnosed positive by pathology. Conclusion The proportion of genetic mutation of SD in chILD is 13.2% in China, of which SP-C deficiency is predominant. The mutation, SP-C p.V39L, was found to be relatively prevalent in China and warrants further investigation.
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- 2019
47. More than BPD? Diagnosis, Prognosis and Treatment of ABCA3 Deficiency in an Extremely Premature Infant
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David N. Cornfield, Michael C. Tracy, and L.C. Steffes
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Extremely premature ,Pediatrics ,medicine.medical_specialty ,biology ,business.industry ,biology.protein ,Medicine ,ABCA3 ,business - Published
- 2019
48. Array comparative genomic hybridization analysis discloses chromosome copy number alterations as indicators of patient outcome in lymph node-negative breast cancer
- Author
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Yae Kanai, Takayuki Kinoshita, Issei Imoto, Ryoko Kikuchi-Koike, Yuko Miyagawa, Kazunori Nagasaka, Masaru Sakamoto, Yasuyuki Ishii, Osamu Matsubara, Takuya Ayabe, Yoshihiro Kikuchi, Johji Inazawa, Shiho Fukui, Tatsuhiro Shibata, Hitoshi Tsuda, Haruko Hiraike, and Takayuki Kobayashi
- Subjects
0301 basic medicine ,Oncology ,Adult ,Cancer Research ,medicine.medical_specialty ,Array-CGH ,DNA Copy Number Variations ,TNFRSF1A ,Breast Neoplasms ,Disease ,ABCA3 ,lcsh:RC254-282 ,03 medical and health sciences ,0302 clinical medicine ,Breast cancer ,Surgical oncology ,Internal medicine ,Genetics ,Biomarkers, Tumor ,Medicine ,Cluster Analysis ,Humans ,Stage (cooking) ,Lymph node ,Aged ,Chromosome Aberrations ,Comparative Genomic Hybridization ,pN0 invasive breast cancer ,biology ,business.industry ,Middle Aged ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,medicine.disease ,Survival Analysis ,NR2F1 ,030104 developmental biology ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Lymphatic Metastasis ,biology.protein ,Female ,Lymph ,Lymph Nodes ,business ,Comparative genomic hybridization ,Research Article - Abstract
Background Patients with lymph node metastasis-negative (pN0) invasive breast cancer have favorable outcomes following initial treatment. However, false negatives which occur during routine histologic examination of lymph nodes are reported to underestimate the clinical stage of disease. To identify a high-risk group in pN0 invasive breast cancer, we examined copy number alterations (CNAs) of 800 cancer-related genes. Methods Using array-based comparative genomic hybridization (CGH) in 51 pN0 cases (19 relapsed and 32 non-relapsed cases), the positivities of specific gene CNAs in the relapsed and non-relapsed groups were compared. An unsupervised hierarchical cluster analysis was then performed to identify case groups that were correlated with patient outcomes. Results The cluster analysis identified three distinct clusters of cases: groups 1, 2, and 3. The major component was triple-negative cases (69%, 9 of 13) in group 1, luminal B-like (57%, 13 of 23) and HER2-overexpressing (26%, 6 of 23) subtypes in group 2, and luminal A-like subtype (60%, 9 of 15) in group 3. Among all 51 cases, those in group 1 showed significantly worse overall survival (OS) than group 2 (p = 0.014), and 5q15 loss was correlated with worse OS (p = 0.017). Among 19 relapsed cases, both OS and relapse-free survival (RFS) rates were significantly lower in group 1 than in group 2 (p = 0.0083 and 0.0018, respectively), and 5q15 loss, 12p13.31 gain, and absence of 16p13.3 gain were significantly correlated with worse OS and RFS (p = 0.019 and 0.0027, respectively). Conclusions As the target genes in these loci, NR2F1 (5q15), TNFRSF1A (12p13.31), and ABCA3 (16p13.3) were examined. 5q15 loss, 12p13.31 gain, and absence of 16q13.3 gain were potential indicators of high-risk recurrence and aggressive clinical behavior of pN0 invasive breast cancers.
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- 2019
49. Survival Mechanisms of Cells Following Chronic Expression of Aberrantly Trafficked ABCA3 Mutant Proteins: An In Vitro Study
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Yaniv Tomer, Michael F. Beers, Ming Zhao, Surafel Mulugeta, and Alessandro Venosa
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biology ,Mutant ,biology.protein ,In vitro study ,ABCA3 ,Cell biology - Published
- 2019
50. Protein profiling of cerebrospinal fluid from patients undergoing vestibular schwannoma surgery and clinical significance
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Junwei Ren, Hui Gong, Yiwen Shen, Liangfu Zhou, Ping Zhong, Ming Xu, Lei Zhang, Mingyu Chen, Xiang Huang, and Jian Xu
- Subjects
0301 basic medicine ,Adult ,Male ,Proteomics ,medicine.medical_specialty ,Proteome ,Proteomic analysis ,RM1-950 ,ABCA3 ,Schwannoma ,Gastroenterology ,03 medical and health sciences ,Vestibular schwannoma ,0302 clinical medicine ,Cerebrospinal fluid ,Recurrence ,Internal medicine ,Medicine ,Humans ,Clinical significance ,Pharmacology ,Vestibular system ,biology ,business.industry ,General Medicine ,Neuroma, Acoustic ,Middle Aged ,Cerebellopontine angle ,medicine.disease ,Magnetic Resonance Imaging ,Neoplasm Proteins ,Tumor Burden ,Protein profiling ,030104 developmental biology ,medicine.anatomical_structure ,iTRAQ ,Posterior cranial fossa ,030220 oncology & carcinogenesis ,Case-Control Studies ,biology.protein ,Female ,Therapeutics. Pharmacology ,Neoplasm Recurrence, Local ,business - Abstract
Vestibular schwannoma (VS) is a common disease in the region of the cerebellopontine angle in the posterior cranial fossa. Large VS and its surgical management usually lead to severe cranial nerve dysfunction and affect the patient’s quality of life. We aimed to find some possible progression markers of VS. Here, we sought to characterize the cerebrospinal fluid (CSF) proteome of patients with different VS grades and recurrence to identify biomarkers predictive of VS growth or recurrence. CSF was collected intraoperatively prior to removal of untreated VS, including grade I–V and recurrence. Isobaric tags for relative and absolute quantitation–based proteomic analysis of CSF from 43 VS patients and 3 control patients was used to identify candidate proteins. Ninety-three overlapping proteins were found to display differential expression in grade I, II, III, IV, and V VS patients compared with the control group. Nine proteins were chosen for validation with enzyme-linked immunosorbent assay. VS was distinguished from control patients based on the expression patterns of six proteins (ATP-binding cassette subfamily A member 3 [ABCA3], secretogranin-1 [SCG1], Krueppel-like factor 11 [KLF11], voltage-dependent calcium channel subunit alpha-2/delta-1 [CA2D1], brain acid soluble protein 1 [BASP1], and peroxiredoxin-2 [PRDX2]. ABCA3 and KLF11 were positively correlated with the size of early-phase of VS, while BASP1 and PRDX2 showed a negative correlation. ABCA3, CA2D1, and KLF11 were upregulated, while BASP1 and PRDX2 were downregulated in the CSF from VS recurrence. But SCG1 was increased only at early-phase. These data suggest that increased ABCA3 and KLF11 and decreased BASP1 and PRDX2 in CSF are associated with VS growth at the early phase or recurrence.
- Published
- 2019
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