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3. Truncating SRCAP variants outside the Floating-Harbor syndrome locus cause a distinct neurodevelopmental disorder with a specific DNA methylation signature

Author

Rots, Dmitrijs, Chater-Diehl, Eric, Dingemans, Alexander JM, Goodman, Sarah J, Siu, Michelle T, Cytrynbaum, Cheryl, Choufani, Sanaa, Hoang, Ny, Walker, Susan, Awamleh, Zain, Charkow, Joshua, Meyn, Stephen, Pfundt, Rolph, Rinne, Tuula, Gardeitchik, Thatjana, de Vries, Bert BA, Deden, A Chantal, Leenders, Erika, Kwint, Michael, Stumpel, Constance TRM, Stevens, Servi JC, Vermeulen, Jeroen R, van Harssel, Jeske VT, Bosch, Danielle GM, van Gassen, Koen LI, van Binsbergen, Ellen, de Geus, Christa M, Brackel, Hein, Hempel, Maja, Lessel, Davor, Denecke, Jonas, Slavotinek, Anne, Strober, Jonathan, Crunk, Amy, Folk, Leandra, Wentzensen, Ingrid M, Yang, Hui, Zou, Fanggeng, Millan, Francisca, Person, Richard, Xie, Yili, Liu, Shuxi, Ousager, Lilian B, Larsen, Martin, Schultz-Rogers, Laura, Morava, Eva, Klee, Eric W, Berry, Ian R, Campbell, Jennifer, Lindstrom, Kristin, Pruniski, Brianna, Neumeyer, Ann M, Radley, Jessica A, Phornphutkul, Chanika, Schmidt, Berkley, Wilson, William G, Õunap, Katrin, Reinson, Karit, Pajusalu, Sander, van Haeringen, Arie, Ruivenkamp, Claudia, Cuperus, Roos, Santos-Simarro, Fernando, Palomares-Bralo, María, Pacio-Míguez, Marta, Ritter, Alyssa, Bhoj, Elizabeth, Tønne, Elin, Tveten, Kristian, Cappuccio, Gerarda, Brunetti-Pierri, Nicola, Rowe, Leah, Bunn, Jason, Saenz, Margarita, Platzer, Konrad, Mertens, Mareike, Caluseriu, Oana, Nowaczyk, Małgorzata JM, Cohn, Ronald D, Kannu, Peter, Alkhunaizi, Ebba, Chitayat, David, Scherer, Stephen W, Brunner, Han G, Vissers, Lisenka ELM, Kleefstra, Tjitske, Koolen, David A, and Weksberg, Rosanna

Subjects
Genetics, Clinical Research, Brain Disorders, Mental Health, Intellectual and Developmental Disabilities (IDD), Aetiology, 2.1 Biological and endogenous factors, Abnormalities, Multiple, Adenosine Triphosphatases, Case-Control Studies, Cohort Studies, Craniofacial Abnormalities, DNA Methylation, Epigenesis, Genetic, Female, Genetic Predisposition to Disease, Growth Disorders, Heart Septal Defects, Ventricular, Humans, Infant, Newborn, Male, Mutation, Neurodevelopmental Disorders, Phenotype, DNA methylation signature, Floating-Harbor syndrome, SRCAP, epigenomics, genotype-phenotype correlation, intellectual disability, neurodevelopmental disorders, non-FLHS SRCAP-related NDD, nonsense-mediated decay, speech delay, Biological Sciences, Medical and Health Sciences, Genetics & Heredity
Abstract

Truncating variants in exons 33 and 34 of the SNF2-related CREBBP activator protein (SRCAP) gene cause the neurodevelopmental disorder (NDD) Floating-Harbor syndrome (FLHS), characterized by short stature, speech delay, and facial dysmorphism. Here, we present a cohort of 33 individuals with clinical features distinct from FLHS and truncating (mostly de novo) SRCAP variants either proximal (n = 28) or distal (n = 5) to the FLHS locus. Detailed clinical characterization of the proximal SRCAP individuals identified shared characteristics: developmental delay with or without intellectual disability, behavioral and psychiatric problems, non-specific facial features, musculoskeletal issues, and hypotonia. Because FLHS is known to be associated with a unique set of DNA methylation (DNAm) changes in blood, a DNAm signature, we investigated whether there was a distinct signature associated with our affected individuals. A machine-learning model, based on the FLHS DNAm signature, negatively classified all our tested subjects. Comparing proximal variants with typically developing controls, we identified a DNAm signature distinct from the FLHS signature. Based on the DNAm and clinical data, we refer to the condition as "non-FLHS SRCAP-related NDD." All five distal variants classified negatively using the FLHS DNAm model while two classified positively using the proximal model. This suggests divergent pathogenicity of these variants, though clinically the distal group presented with NDD, similar to the proximal SRCAP group. In summary, for SRCAP, there is a clear relationship between variant location, DNAm profile, and clinical phenotype. These results highlight the power of combined epigenetic, molecular, and clinical studies to identify and characterize genotype-epigenotype-phenotype correlations.

Published
2021

5. Mechanism research of type I reactive oxygen species conversion based on molecular and aggregate levels for tumor photodynamic therapy.

Author

Xu, Youqin, Xie, Yili, Wan, Qing, Tian, Jianwen, Liang, Jing, Zhou, Jianlong, Song, Mu, Zhou, Xinke, and Teng, Muzhou

Subjects
MOLECULAR structure, HYDROXYL group, REACTIVE oxygen species, ENERGY levels (Quantum mechanics), PHOTODYNAMIC therapy
Abstract

Type I photosensitizers (PSs) with the ability to generate reactive oxygen species (ROS) containing superoxide anion and hydroxyl radical have promising application potential for treating hypoxia tumors, but the deep mechanism of type II ROS converts to the type I ROS in the PSs is still unclear, it is urgent to reveal influencing factors about inducing type I ROS generation. Herein, six PSs with aggregation‐induced emission properties, which were fabricated with the same electronic acceptor but different electronic donors and "π‐bridge", have been successfully prepared to explore the influencing mechanism of generating superoxide anion and hydroxyl radical from organic PSs. Experimental results discovered two factors containing molecular structure and aggregated environment could decide the ROS efficiency and types of PSs. On the level of designing molecular structure, we discovered that "π‐bridge" with a lower energy level of the lowest triplet state could be beneficial for triggering the production of superoxide anion, and electronic donor of triphenylamine was an important factor in producing hydroxyl radical than another donor of dimethylamine. On the level of designing aggregates of PS‐based polymeric nanoparticles, bovine serum albumin could improve largely the generation efficiency of superoxide anion. Due to the satisfactory ROS efficiency and better biocompatibility, synthetic PSs showed excellent photodynamic therapy outcomes in vitro/vivo. [ABSTRACT FROM AUTHOR]

Published
2024
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7. Genetic variants in DGAT1 cause diverse clinical presentations of malnutrition through a specific molecular mechanism

Author

Gupta, Aditi, Dsouza, Nikita R., Zarate, Yuri A., Lombardo, Rachel, Hopkin, Robert, Linehan, Allison R., Simpson, Jamela, McCarrier, Julie, Agre, Katherine E., Gavrilova, Ralitza H., Stephens, Michael C., Grothe, Rayna M., Monaghan, Kristin G., Xie, Yili, Basel, Donald, Urrutia, Raul A., Cole, Conrad R., Klee, Eric W., and Zimmermann, Michael T.

Published
2020
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11. The clinical and molecular spectrum of QRICH1 associated neurodevelopmental disorder

Author

Kumble, Smitha, Levy, Amanda, Punetha, Jaya, Gao, Hua, Ah Mew, Nicholas, Anyane-Yeboa, Kwame, Benke, Paul, Berger, Sara, Bjerglund, Lise, Campos-Xavier, Belinda, Ciliberto, Michael, Cohen, Julie, Comi, Anne, Curry, Cynthia, Damaj, Lena, Denommé-Pichon, Anne-Sophie, Emrick, Lisa, Faivre, Laurence, Fasano, Mary Beth, Fiévet, Alice, Finkel, Richard, García-Miñaúr, Sixto, Gerard, Amanda, Gomez-Puertas, Paulino, Guillen Sacoto, Maria, Hoffman, Trevor, Howard, Lillian, Iglesias, Alejandro, Izumi, Kosuke, Larson, Austin, Leiber, Anja, Lozano, Reymundo, Marcos-Alcalde, Iñigo, Mintz, Cassie, Mullegama, Sureni, Møller, Rikke, Odent, Sylvie, Oppermann, Henry, Ostergaard, Elsebet, Pacio-Míguez, Marta, Palomares-Bralo, Maria, Parikh, Sumit, Paulson, Anna, Platzer, Konrad, Posey, Jennifer, Potocki, Lorraine, Revah-Politi, Anya, Rio, Marlene, Ritter, Alyssa, Robinson, Scott, Rosenfeld, Jill, Santos-Simarro, Fernando, Anyane‐Yeboa, Kwame, Campos‐Xavier, Belinda, Denommé‐Pichon, Anne‐Sophie, García‐Miñaúr, Sixto, Gomez‐Puertas, Paulino, Marcos‐Alcalde, Iñigo, Pacio‐Míguez, Marta, Palomares‐Bralo, Maria, Revah‐Politi, Anya, Santos‐Simarro, Fernando, Sombra, Sérgio Sousa, Wéber, Mathys, Xie, Yili, Chung, Wendy K., Brown, Natasha, Tümer, Zeynep, Murdoch Children's Research Institute (MCRI), Copenhagen University Hospital, Baylor College of Medicine (BCM), Baylor University, Icahn School of Medicine at Mount Sinai [New York] (MSSM), CHU Pontchaillou [Rennes], Université Bourgogne Franche-Comté [COMUE] (UBFC), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Institut Gustave Roussy (IGR), Institut de Génétique et Développement de Rennes (IGDR), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Centre de référence Maladies Rares CLAD-Ouest [Rennes], CIBER de Enfermedades Raras (CIBERER), GeneDx [Gaithersburg, MD, USA], Columbia University Irving Medical Center (CUIMC), University of Melbourne, University of Copenhagen = Københavns Universitet (KU), Spanish Ministry of Science / State Research Agency projects. Grant Numbers: DTS20-00024, RTC-2017-6494-1, RTI2018-094434-B-I00 SFARI and JPB Foundation, Raregenomics network, financed by the Consejería de Educación de la C. de Madrid. Grant Number: S2017 / BMD-3721, European Comission JPIAMR projects CONNECT and AEPIC, National Center for Advancing Translational Sciences, National Institutes of Health. Grant Number: UL1TR001873, National Human Genome Research Institute (NHGRI) and National Heart, Lung, and Blood Institute (NHLBI). Grant Number: UM1 HG006542 Undiagnosed Diseases Network, European Social Fund, Rashid Family Fund, NIH Common Fund, through the Office of Strategic Coordination/Office of the NIH Director. Grant Number: U01HG007709, ISCIII, Ministerio de Ciencia e Innovación. Grant Number: PI19/01681, Baylor Hopkins Center for Mendelian Genomics. Grant Numbers: NHGRI K08 HG008986, NHGRI/NLHBI UM1 HG006542, Centro Portugal Regional Operational Programme (CENTRO 2020), under the Portugal 2020 Partnership Agreement, through the European Regional Development Fund (ERDF). Grant Number: CENTRO-01-0247-FEDER-017800, Département de biologie et pathologie médicales [Gustave Roussy], Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), and University of Copenhagen = Københavns Universitet (UCPH)

Subjects
Autism Spectrum Disorder, [SDV]Life Sciences [q-bio], Dwarfism, Biology, Bioinformatics, Weight Gain, Short stature, 03 medical and health sciences, 0302 clinical medicine, Neurodevelopmental disorder, Neuroimaging, Seizures, variable expressivity, Intellectual disability, Genetics, medicine, Missense mutation, Humans, QRICH1, hypotonia, Genetics (clinical), 030304 developmental biology, 0303 health sciences, medicine.disease, Hypotonia, short stature, Scoliosis, variant, Autism spectrum disorder, Neurodevelopmental Disorders, intellectual disability, Muscle Hypotonia, medicine.symptom, 030217 neurology & neurosurgery
Abstract

De novo variants in QRICH1 (Glutamine-rich protein 1) has recently been reported in 11 individuals with intellectual disability. The function of QRICH1 is largely unknown but it is likely to play a key role in the unfolded response of endoplasmic reticulum (ER) stress through transcriptional control of proteostasis. In this study, we present 27 additional individuals and delineate the clinical and molecular spectrum of the individuals (n=38) with QRICH1 variants. The main clinical features were mild to moderate developmental delay/intellectual disability (71%), non-specific facial dysmorphism (92%) and hypotonia (39%). Additional findings included poor weight gain (29%), short stature (29%), autism spectrum disorder (29%), seizures (24%) and scoliosis (18%). Minor structural brain abnormalities were reported in 52% of the individuals with brain imaging. Truncating or splice variants were found in 28 individuals and 10 had missense variants. Four variants were inherited from mildly affected parents. This study confirms that heterozygous QRICH1 variants cause a neurodevelopmental disorder including short stature and expands the phenotypic spectrum to include poor weight gain, scoliosis, hypotonia, minor structural brain anomalies, and seizures. Inherited variants from mildly affected parents are reported for the first time, suggesting variable expressivity. This article is protected by copyright. All rights reserved.

Published
2021
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12. Expansion of the Genotypic and Phenotypic Spectrum of WASF1-Related Neurodevelopmental Disorder

Author

Srivastava, Siddharth, primary, Macke, Erica L., additional, Swanson, Lindsay C., additional, Coulter, David, additional, Klee, Eric W., additional, Mullegama, Sureni V., additional, Xie, Yili, additional, Lanpher, Brendan C., additional, Bedoukian, Emma C., additional, Skraban, Cara M., additional, Villard, Laurent, additional, Milh, Mathieu, additional, Leppert, Mary L. O., additional, and Cohen, Julie S., additional

Published
2021
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15. Facile and highly efficient fabrication of graphene oxide-based polymer nanocomposites through mussel-inspired chemistry and their environmental pollutant removal application.

Author

Wan, Qing, Liu, Meiying, Xie, Yili, Tian, Jianwen, Huang, Qiang, Deng, Fengjie, Mao, Liucheng, Zhang, Qingsong, Zhang, Xiaoyong, and Wei, Yen

Subjects
NANOFABRICATION, GRAPHENE oxide, MICHAEL reaction, POLYMERIC nanocomposites, AQUEOUS solutions
Abstract

Graphene oxide (GO)-based polymer nanocomposites were fabricated in aqueous solution via a novel strategy combination of mussel-inspired chemistry and Michael addition reaction. These GO-based polymer nanocomposites were used as efficient absorbents for the removal of organic dyes methylene blue (MB) from the aqueous solution. The successful preparation of GO-based polymer nanocomposites (GO-PDA-PSPSH) was confirmed by a number of characterization techniques in detail. Furthermore, a series of influential factors such as contact time, initial solution pH, and temperature were investigated and optimized. The optimal adsorption time of GO-PDA-PSPSH nanocomposites toward MB was 58 min. The maximum adsorption efficiency was occurred at pH 7. On the other hand, accompanying with the elevation of temperature, removal efficiency of GO-PDA-PSPSH nanocomposites was significantly increased, indicating that the adsorption process of MB by GO-PDA-PSPSH nanocomposites was endothermic. More importantly, the adsorption capability of GO-PDA-PSPSH nanocomposites was obviously greater than many other GO-based nanocomposites. Taken together, we have developed a facile biomimetic strategy for the preparation of GO-based polymer nanocomposites, which showed excellent adsorption capability toward MB and are promising for environmental adsorption applications. [ABSTRACT FROM AUTHOR]

Published
2017
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18. Truncating SRCAP variants outside the Floating-Harbor syndrome locus cause a distinct neurodevelopmental disorder with a specific DNA methylation signature

Author

Ian R. Berry, Martin R. Larsen, Ann M. Neumeyer, Lilian Bomme Ousager, Leah J. Rowe, Richard E. Person, Chanika Phornphutkul, David A. Koolen, Constance T. R. M. Stumpel, Konrad Platzer, Elizabeth J. Bhoj, Eric Chater-Diehl, Jason Bunn, Erika Leenders, Koen L.I. van Gassen, Joshua Charkow, Rosanna Weksberg, Ny Hoang, Roos Cuperus, Davor Lessel, Rolph Pfundt, Oana Caluseriu, Sarah J. Goodman, Leandra Folk, Fanggeng Zou, Michelle T. Siu, David Chitayat, Dmitrijs Rots, Jeroen R. Vermeulen, Shuxi Liu, Cheryl Cytrynbaum, Elin Tønne, Hein Brackel, Mareike Mertens, Jennifer Campbell, Jonathan B. Strober, Maja Hempel, Tjitske Kleefstra, Małgorzata J.M. Nowaczyk, Amy Crunk, Marta Pacio-Míguez, Fernando Santos-Simarro, Nicola Brunetti-Pierri, Christa de Geus, María Palomares-Bralo, Lisenka E.L.M. Vissers, Sander Pajusalu, Peter Kannu, Sanaa Choufani, Kristin Lindstrom, Margarita Saenz, Berkley Schmidt, Daniëlle G.M. Bosch, Han G. Brunner, Arie van Haeringen, Ellen van Binsbergen, Brianna Pruniski, Claudia A. L. Ruivenkamp, William G. Wilson, Servi J. C. Stevens, Susan Walker, Kristian Tveten, Zain Awamleh, Gerarda Cappuccio, Alexander J. M. Dingemans, Michael Kwint, Ebba Alkhunaizi, Jonas Denecke, Alyssa Ritter, Eric W. Klee, Bert B.A. de Vries, Jeske V.T. van Harssel, Stephen Meyn, A. Chantal Deden, Francisca Millan, Eva Morava, Ingrid M. Wentzensen, Anne Slavotinek, Stephen W. Scherer, Katrin Õunap, Tuula Rinne, Jessica A. Radley, Yili Xie, Thatjana Gardeitchik, Laura Schultz-Rogers, Karit Reinson, Ronald D. Cohn, Hui Yang, RS: GROW - R4 - Reproductive and Perinatal Medicine, MUMC+: DA KG Polikliniek (9), Klinische Genetica, MUMC+: DA KG Lab Centraal Lab (9), Klinische Neurowetenschappen, MUMC+: MA Med Staf Spec Neurologie (9), RS: MHeNs - R1 - Cognitive Neuropsychiatry and Clinical Neuroscience, MUMC+: DA Klinische Genetica (5), Rots, Dmitrij, Chater-Diehl, Eric, Dingemans, Alexander J M, Goodman, Sarah J, Siu, Michelle T, Cytrynbaum, Cheryl, Choufani, Sanaa, Hoang, Ny, Walker, Susan, Awamleh, Zain, Charkow, Joshua, Meyn, Stephen, Pfundt, Rolph, Rinne, Tuula, Gardeitchik, Thatjana, de Vries, Bert B A, Deden, A Chantal, Leenders, Erika, Kwint, Michael, Stumpel, Constance T R M, Stevens, Servi J C, Vermeulen, Jeroen R, van Harssel, Jeske V T, Bosch, Danielle G M, van Gassen, Koen L I, van Binsbergen, Ellen, de Geus, Christa M, Brackel, Hein, Hempel, Maja, Lessel, Davor, Denecke, Jona, Slavotinek, Anne, Strober, Jonathan, Crunk, Amy, Folk, Leandra, Wentzensen, Ingrid M, Yang, Hui, Zou, Fanggeng, Millan, Francisca, Person, Richard, Xie, Yili, Liu, Shuxi, Ousager, Lilian B, Larsen, Martin, Schultz-Rogers, Laura, Morava, Eva, Klee, Eric W, Berry, Ian R, Campbell, Jennifer, Lindstrom, Kristin, Pruniski, Brianna, Neumeyer, Ann M, Radley, Jessica A, Phornphutkul, Chanika, Schmidt, Berkley, Wilson, William G, Õunap, Katrin, Reinson, Karit, Pajusalu, Sander, van Haeringen, Arie, Ruivenkamp, Claudia, Cuperus, Roo, Santos-Simarro, Fernando, Palomares-Bralo, María, Pacio-Míguez, Marta, Ritter, Alyssa, Bhoj, Elizabeth, Tønne, Elin, Tveten, Kristian, Cappuccio, Gerarda, Brunetti-Pierri, Nicola, Rowe, Leah, Bunn, Jason, Saenz, Margarita, Platzer, Konrad, Mertens, Mareike, Caluseriu, Oana, Nowaczyk, Małgorzata J M, Cohn, Ronald D, Kannu, Peter, Alkhunaizi, Ebba, Chitayat, David, Scherer, Stephen W, Brunner, Han G, Vissers, Lisenka E L M, Kleefstra, Tjitske, Koolen, David A, and Weksberg, Rosanna

Subjects
0301 basic medicine, Heart Septal Defects, Ventricular, Male, DNA methylation signature, nonsense-mediated decay, speech delay, PROTEIN, 030105 genetics & heredity, PHENOTYPE, epigenomic, Medical and Health Sciences, Epigenesis, Genetic, Craniofacial Abnormalities, Cohort Studies, Neurodevelopmental disorder, 2.1 Biological and endogenous factors, Aetiology, Genetics (clinical), Growth Disorders, Epigenomics, non-FLHS SRCAP-related NDD, Genetics, Adenosine Triphosphatases, Genetics & Heredity, neurodevelopmental disorders, Metabolic Disorders Radboud Institute for Molecular Life Sciences [Radboudumc 6], SOTOS-LIKE, Biological Sciences, SRCAP, Hypotonia, AT-HOOK, 3. Good health, Phenotype, Mental Health, intellectual disability, Speech delay, DNA methylation, Female, medicine.symptom, Abnormalities, Multiple, EXON 34, Intellectual and Developmental Disabilities (IDD), Locus (genetics), Biology, genotype-phenotype correlation, DIAGNOSIS, Article, 03 medical and health sciences, Genetic, Clinical Research, medicine, Humans, Abnormalities, Multiple, Genetic Predisposition to Disease, Floating-Harbor syndrome, SPECTRUM, Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7], MUTATIONS, Heart Septal Defects, Infant, Newborn, Ventricular, dNaM, Infant, DNA Methylation, medicine.disease, Newborn, neurodevelopmental disorder, GENE, Brain Disorders, 030104 developmental biology, Floating–Harbor syndrome, Case-Control Studies, Mutation, epigenomics, EPISIGNATURES, Epigenesis
Abstract

Contains fulltext : 234078.pdf (Publisher’s version ) (Open Access) Truncating variants in exons 33 and 34 of the SNF2-related CREBBP activator protein (SRCAP) gene cause the neurodevelopmental disorder (NDD) Floating-Harbor syndrome (FLHS), characterized by short stature, speech delay, and facial dysmorphism. Here, we present a cohort of 33 individuals with clinical features distinct from FLHS and truncating (mostly de novo) SRCAP variants either proximal (n = 28) or distal (n = 5) to the FLHS locus. Detailed clinical characterization of the proximal SRCAP individuals identified shared characteristics: developmental delay with or without intellectual disability, behavioral and psychiatric problems, non-specific facial features, musculoskeletal issues, and hypotonia. Because FLHS is known to be associated with a unique set of DNA methylation (DNAm) changes in blood, a DNAm signature, we investigated whether there was a distinct signature associated with our affected individuals. A machine-learning model, based on the FLHS DNAm signature, negatively classified all our tested subjects. Comparing proximal variants with typically developing controls, we identified a DNAm signature distinct from the FLHS signature. Based on the DNAm and clinical data, we refer to the condition as "non-FLHS SRCAP-related NDD." All five distal variants classified negatively using the FLHS DNAm model while two classified positively using the proximal model. This suggests divergent pathogenicity of these variants, though clinically the distal group presented with NDD, similar to the proximal SRCAP group. In summary, for SRCAP, there is a clear relationship between variant location, DNAm profile, and clinical phenotype. These results highlight the power of combined epigenetic, molecular, and clinical studies to identify and characterize genotype-epigenotype-phenotype correlations.

Published
2021
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19. Synergistic effect of W(VI) and Ni(II) uptakes on an MgAl-layered double hydroxide.

Author

Xie Y, Yuan X, Liu S, Ren S, and Luo W

Abstract

The coadsorption of anionic and cationic pollutants on adsorbents holds considerable importance in the development of relevant removal technologies and the understanding of pollutant transport in complex environmental media. Herein, tungsten (W), an emerging contaminant, and nickel (Ni) were chosen as two differently charged inorganic pollutants to investigate their removal characteristics on a magnesium-aluminum layered double hydroxide (LDH) prepared via microwave radiation. In the single systems, the amount of adsorbed W on LDH was initially increased and then decreased with increasing initial W concentration. In concentrated W solutions, LDH dissolution was intensified, accompanied by the intercalation and polymerization of W in the interlayer space. Among the various oxyanions, phosphate showed the most substantial inhibition on W uptake. In contrast, uptake of Ni was enhanced with the rapider adsorption rate at higher concentrations, due to the isomorphic substitution and precipitation. Coexisting cations of similar sizes competed with Ni to substitute with Mg, resulting in reduced uptake, except in the case of Fe 3+ which disintegrated the LDH structure. In a binary system, the uptakes of W and Ni increased by 2.65 and 1.80 times, respectively, compared to their corresponding single systems, indicating an intriguing synergistic effect. Furthermore, the presence of Ni restored the LDH's ability to remove W in the presence of coexisting H 2 PO 4 - , SO 4 2- , and CrO 4 2- . However, due to the presence of W, the coexisting Co 2+ and Zn 2+ inhibited Ni uptake more significantly. The crystallinity decrease of LDH was induced and identified as the cause of the uptake synergy between W and Ni. These findings provide valuable insights for the development of efficient multifunctional adsorbents and enhance our understanding of the transfer dynamics of W in the presence of coexisting substances., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Wuhui Luo reports financial support was provided by National Natural Science Foundation of China. Wuhui Luo reports financial support was provided by Jiangxi Provincial Natural Science Foundation. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Inc. All rights reserved.)

Published
2024
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