20 results on '"Acquadro, A."'
Search Results
2. Identification of DNA methyltransferases and demethylases in Solanum melongena L., and their transcription dynamics during fruit development and after salt and drought stresses.
- Author
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Andrea Moglia, Silvia Gianoglio, Alberto Acquadro, Danila Valentino, Anna Maria Milani, Sergio Lanteri, and Cinzia Comino
- Subjects
Medicine ,Science - Abstract
DNA methylation through the activity of cytosine-5-methyltransferases (C5-MTases) and DNA demethylases plays important roles in genome protection as well as in regulating gene expression during plant development and plant response to environmental stresses. In this study, we report on a genome-wide identification of six C5-MTases (SmelMET1, SmelCMT2, SmelCMT3a, SmelCMT3b, SmelDRM2, SmelDRM3) and five demethylases (SmelDemethylase_1, SmelDemethylase_2, SmelDemethylase_3, SmelDemethylase_4, SmelDemethylase_5) in eggplant. Gene structural characteristics, chromosomal localization and phylogenetic analyses are also described. The transcript profiling of both C5-MTases and demethylases was assessed at three stages of fruit development in three eggplant commercial F1 hybrids: i.e. 'Clara', 'Nite Lady' and 'Bella Roma', representative of the eggplant berry phenotypic variation. The trend of activation of C5-MTases and demethylase genes varied in function of the stage of fruit development and was genotype dependent. The transcription pattern of C5MTAses and demethylases was also assessed in leaves of the F1 hybrid 'Nite Lady' subjected to salt and drought stresses. A marked up-regulation and down-regulation of some C5-MTases and demethylases was detected, while others did not vary in their expression profile. Our results suggest a role for both C5-MTases and demethylases during fruit development, as well as in response to abiotic stresses in eggplant, and provide a starting framework for supporting future epigenetic studies in the species.
- Published
- 2019
- Full Text
- View/download PDF
3. 1H-NMR and MALDI-TOF MS as metabolomic quality control tests to classify platelet derived medium additives for GMP compliant cell expansion procedures.
- Author
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Francesco Agostini, Marta Ruzza, Davide Corpillo, Luca Biondi, Elena Acquadro, Barbara Canepa, Alessandra Viale, Monica Battiston, Fabrizio Serra, Silvio Aime, and Mario Mazzucato
- Subjects
Medicine ,Science - Abstract
INTRODUCTION:Ex vivo cell expansion under Good Manufacturing Practice (GMP) guidelines can be performed using medium additives containing human growth factors from platelets. These products can differently affect proliferation of adipose mesenchymal stromal stem cells (ASC). Qualification of medium additive performance is required for validation under GMP regulations: assessment of growth factor concentrations is not sufficient to predict the biological activity of the product batch. Proton nuclear magnetic resonance spectrometry (1H-NMR) and matrix-assisted laser desorption/ionization time of flight mass spectroscopy (MALDI-TOF MS) provide wide molecular characterization of samples. AIMS:We aimed to assess if 1H-NMR and MALDI-TOF MS techniques can be used as quality control test potentially predicting the impact of a medium additive on cell proliferation. METHODS:We tested the impact on ASC growth rate (cell proliferation assessment and cell morphology analysis) of four medium additives, obtained by different methods from human platelet apheresis product. In order to classify each medium additive, we evaluated growth factor concentrations and spectra obtained by 1H-NMR and by MALDI-TOF MS. RESULTS:Medium additive obtained by CaCl2 activation of platelet rich products induced higher proliferation rate vs additive derived from platelet depleted ones. Additives obtained by freeze-and-thaw methods weakly induced ASC proliferation. As expected, principal component analysis of growth factor concentrations did not unravel specific biochemical features characterizing medium additives in relation with their biological activity. Otherwise, while 1H-NMR showed a partial resolution capacity, analysis of MALDI-TOF MS spectra allowed unambiguous distinction between the medium additives we used to differently stimulate cell growth in vitro. DISCUSSION:MALDI-TOF and, despite limitations, 1H-NMR are promising cost effective and reliable quality controls to classify the potential of a medium additive to promote ASC growth. This can represent, after further investigations and appropriate validation, a significant advantage for GMP compliant manufacturing of advanced cell therapy products.
- Published
- 2018
- Full Text
- View/download PDF
4. High density SNP mapping and QTL analysis for time of leaf budburst in Corylus avellana L.
- Author
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Daniela Torello Marinoni, Nadia Valentini, Ezio Portis, Alberto Acquadro, Chiara Beltramo, Shawn A Mehlenbacher, Todd C Mockler, Erik R Rowley, and Roberto Botta
- Subjects
Medicine ,Science - Abstract
The growing area of European hazelnut (Corylus avellana L.) is increasing, as well as the number of producing countries, and there is a pressing need for new improved cultivars. Hazelnut conventional breeding process is slow, due to the length of juvenile phase and the high heterozygosity level. The development of genetic linkage maps and the identification of molecular markers tightly linked to QTL (quantitative trait loci) of agronomic interest are essential tools for speeding up the selection of seedlings carrying desired traits through marker-assisted selection. The objectives of this study were to enrich a previous linkage map and confirm QTL related to time of leaf budburst, using an F1 population obtained by crossing Tonda Gentile delle Langhe with Merveille de Bollwiller. Genotyping-by-Sequencing was used to identify a total of 9,999 single nucleotide polymorphism markers. Well saturated linkage maps were constructed for each parent using the double pseudo-testcross mapping strategy. A reciprocal translocation was detected in Tonda Gentile delle Langhe between two non-homologous chromosomes. Applying a bioinformatic approach, we were able to disentangle 'pseudo-linkage' between markers, removing markers around the translocation breakpoints and obtain a linear order of the markers for the two chromosomes arms, for each linkage group involved in the translocation. Twenty-nine QTL for time of leaf budburst were identified, including a stably expressed region on LG_02 of the Tonda Gentile delle Langhe map. The stability of these QTL and their coding sequence content indicates promise for the identification of specific chromosomal regions carrying key genes involved in leaf budburst.
- Published
- 2018
- Full Text
- View/download PDF
5. The genome-wide identification and transcriptional levels of DNA methyltransferases and demethylases in globe artichoke.
- Author
-
Silvia Gianoglio, Andrea Moglia, Alberto Acquadro, Cinzia Comino, and Ezio Portis
- Subjects
Medicine ,Science - Abstract
Changes to the cytosine methylation status of DNA, driven by the activity of C5 methyltransferases (C5-MTases) and demethylases, exert an important influence over development, transposon movement, gene expression and imprinting. Three groups of C5-MTase enzymes have been identified in plants, namely MET (methyltransferase 1), CMT (chromomethyltransferases) and DRM (domains rearranged methyltransferases). Here the repertoire of genes encoding C5-MTase and demethylase by the globe artichoke (Cynara cardunculus var. scolymus) is described, based on sequence homology, a phylogenetic analysis and a characterization of their functional domains. A total of ten genes encoding C5-MTase (one MET, five CMTs and four DRMs) and five demethylases was identified. An analysis of their predicted product's protein structure suggested an extensive level of conservation has been retained by the C5-MTases. Transcriptional profiling based on quantitative real time PCR revealed a number of differences between the genes encoding maintenance and de novo methyltransferases, sometimes in a tissue- or development-dependent manner, which implied a degree of functional specialization.
- Published
- 2017
- Full Text
- View/download PDF
6. Coding SNPs analysis highlights genetic relationships and evolution pattern in eggplant complexes.
- Author
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Alberto Acquadro, Lorenzo Barchi, Pietro Gramazio, Ezio Portis, Santiago Vilanova, Cinzia Comino, Mariola Plazas, Jaime Prohens, and Sergio Lanteri
- Subjects
Medicine ,Science - Abstract
Brinjal (Solanum melongena), scarlet (S. aethiopicum) and gboma (S. macrocarpon) eggplants are three Old World domesticates. The genomic DNA of a collection of accessions belonging to the three cultivated species, along with a representation of various wild relatives, was characterized for the presence of single nucleotide polymorphisms (SNPs) using a genotype-by-sequencing approach. A total of 210 million useful reads were produced and were successfully aligned to the reference eggplant genome sequence. Out of the 75,399 polymorphic sites identified among the 76 entries in study, 12,859 were associated with coding sequence. A genetic relationships analysis, supported by the output of the FastSTRUCTURE software, identified four major sub-groups as present in the germplasm panel. The first of these clustered S. aethiopicum with its wild ancestor S. anguivi; the second, S. melongena, its wild progenitor S. insanum, and its relatives S. incanum, S. lichtensteinii and S. linneanum; the third, S. macrocarpon and its wild ancestor S. dasyphyllum; and the fourth, the New World species S. sisymbriifolium, S. torvum and S. elaeagnifolium. By applying a hierarchical FastSTRUCTURE analysis on partitioned data, it was also possible to resolve the ambiguous membership of the accessions of S. campylacanthum, S. violaceum, S. lidii, S. vespertilio and S. tomentsum, as well as to genetically differentiate the three species of New World Origin. A principal coordinates analysis performed both on the entire germplasm panel and also separately on the entries belonging to sub-groups revealed a clear separation among species, although not between each of the domesticates and their respective wild ancestors. There was no clear differentiation between either distinct cultivar groups or different geographical provenance. Adopting various approaches to analyze SNP variation provided support for interpretation of results. The genotyping-by-sequencing approach showed to be highly efficient for both quantifying genetic diversity and establishing genetic relationships among and within cultivated eggplants and their wild relatives. The relevance of these results to the evolution of eggplants, as well as to their genetic improvement, is discussed.
- Published
- 2017
- Full Text
- View/download PDF
7. A Genome-Wide Survey of the Microsatellite Content of the Globe Artichoke Genome and the Development of a Web-Based Database.
- Author
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Ezio Portis, Flavio Portis, Luisa Valente, Andrea Moglia, Lorenzo Barchi, Sergio Lanteri, and Alberto Acquadro
- Subjects
Medicine ,Science - Abstract
The recently acquired genome sequence of globe artichoke (Cynara cardunculus var. scolymus) has been used to catalog the genome's content of simple sequence repeat (SSR) markers. More than 177,000 perfect SSRs were revealed, equivalent to an overall density across the genome of 244.5 SSRs/Mbp, but some 224,000 imperfect SSRs were also identified. About 21% of these SSRs were complex (two stretches of repeats separated by
- Published
- 2016
- Full Text
- View/download PDF
8. DNA methylation profiles and their relationship with cytogenetic status in adult acute myeloid leukemia.
- Author
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Sara Alvarez, Javier Suela, Ana Valencia, Agustín Fernández, Mark Wunderlich, Xabier Agirre, Felipe Prósper, José Ignacio Martín-Subero, Alba Maiques, Francesco Acquadro, Sandra Rodriguez Perales, María José Calasanz, Jose Roman-Gómez, Reiner Siebert, James C Mulloy, José Cervera, Miguel Angel Sanz, Manel Esteller, and Juan C Cigudosa
- Subjects
Medicine ,Science - Abstract
Aberrant promoter DNA methylation has been shown to play a role in acute myeloid leukemia (AML) pathophysiology. However, further studies to discuss the prognostic value and the relationship of the epigenetic signatures with defined genomic rearrangements in acute myeloid leukemia are required.We carried out high-throughput methylation profiling on 116 de novo AML cases and we validated the significant biomarkers in an independent cohort of 244 AML cases. Methylation signatures were associated with the presence of a specific cytogenetic status. In normal karyotype cases, aberrant methylation of the promoter of DBC1 was validated as a predictor of the disease-free and overall survival. Furthermore, DBC1 expression was significantly silenced in the aberrantly methylated samples. Patients with chromosome rearrangements showed distinct methylation signatures. To establish the role of fusion proteins in the epigenetic profiles, 20 additional samples of human hematopoietic stem/progenitor cells (HSPC) transduced with common fusion genes were studied and compared with patient samples carrying the same rearrangements. The presence of MLL rearrangements in HSPC induced the methylation profile observed in the MLL-positive primary samples. In contrast, fusion genes such as AML1/ETO or CBFB/MYH11 failed to reproduce the epigenetic signature observed in the patients.Our study provides a comprehensive epigenetic profiling of AML, identifies new clinical markers for cases with a normal karyotype, and reveals relevant biological information related to the role of fusion proteins on the methylation signature.
- Published
- 2010
- Full Text
- View/download PDF
9. Characteristics of the stalking campaign: Consequences and coping strategies for men and women that report their victimization to police
- Author
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Daniela Acquadro Maran, Maurizio Tirassa, Antonella Varetto, and Ilenia Corona
- Subjects
Male ,European People ,Emotions ,Social Sciences ,Criminology ,Pathology and Laboratory Medicine ,Sociology ,Adaptation, Psychological ,80 and over ,Medicine and Health Sciences ,Psychology ,Ethnicities ,Young adult ,Child ,Crime Victims ,media_common ,Aged, 80 and over ,Multidisciplinary ,Stalking ,Headaches ,05 social sciences ,Procrastination ,Fear ,Middle Aged ,Telephones ,Police ,Italian People ,Professions ,Italy ,Medicine ,Engineering and Technology ,Female ,Crime ,050104 developmental & child psychology ,Clinical psychology ,Research Article ,Adult ,Adolescent ,media_common.quotation_subject ,Science ,Equipment ,Young Adult ,Signs and Symptoms ,Diagnostic Medicine ,Humans ,0501 psychology and cognitive sciences ,Adaptation ,Aged ,Communication Equipment ,Behavior ,Case files ,050901 criminology ,Crime victims ,Biology and Life Sciences ,People and Places ,Psychological ,Domestic violence ,Population Groupings ,0509 other social sciences - Abstract
The study analysed cases reported to police by men and women who were victims of stalking. The objective was to describe the characteristics of the stalking campaigns experienced by men and women, their consequences, and the coping strategies adopted by the victims, as they are recorded in police case files. All the information was collected in three cities in the Northwest of Italy. Analyses were performed on 271 files classified by police officers as cases of stalking, reported by men (87, 32.1%) and women (184, 67.9%). The study revealed that men tended to let the stalking campaign last for a longer time than women before turning to the police. Procrastination had some consequences, especially in the emotional sphere, that affected the victim's wellbeing. Moreover, the coping strategies used by men victims were not effective and even risked to hamper the work of the police officers intervening and investigating on the case.
- Published
- 2019
10. Characteristics of the stalking campaign: Consequences and coping strategies for men and women that report their victimization to police
- Author
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Acquadro Maran, Daniela, primary, Varetto, Antonella, additional, Corona, Ilenia, additional, and Tirassa, Maurizio, additional
- Published
- 2020
- Full Text
- View/download PDF
11. Identification of DNA methyltransferases and demethylases in Solanum melongena L., and their transcription dynamics during fruit development and after salt and drought stresses
- Author
-
Moglia, Andrea, primary, Gianoglio, Silvia, additional, Acquadro, Alberto, additional, Valentino, Danila, additional, Milani, Anna Maria, additional, Lanteri, Sergio, additional, and Comino, Cinzia, additional
- Published
- 2019
- Full Text
- View/download PDF
12. High density SNP mapping and QTL analysis for time of leaf budburst in Corylus avellana L
- Author
-
Ezio Portis, Todd C. Mockler, Erik R. Rowley, Nadia Valentini, Alberto Acquadro, Daniela Torello Marinoni, Chiara Beltramo, Shawn A. Mehlenbacher, and Roberto Botta
- Subjects
Genetics and Molecular Biology (all) ,0106 biological sciences ,0301 basic medicine ,Leaves ,Genetic Linkage ,lcsh:Medicine ,Chromosomal translocation ,Plant Science ,Plant Genetics ,01 natural sciences ,Loss of heterozygosity ,DNA library construction ,Plant Genomics ,lcsh:Science ,Genetics ,education.field_of_study ,Multidisciplinary ,Chromosome Biology ,Plant Anatomy ,Chromosome Mapping ,Agriculture ,Genomics ,Genomic Library Construction ,Chromosomal Aberrations ,Phenotype ,Research Article ,Biotechnology ,Genetic Markers ,Quantitative Trait Loci ,Population ,Single-nucleotide polymorphism ,DNA construction ,Biology ,Quantitative trait locus ,Research and Analysis Methods ,Polymorphism, Single Nucleotide ,Chromosomes, Plant ,Molecular Genetics ,03 medical and health sciences ,Corylus ,Gene mapping ,Genetic linkage ,Molecular Biology Techniques ,Linkage Mapping ,education ,Molecular Biology ,Linkage (software) ,Agricultural and Biological Sciences (all) ,Gene Mapping ,lcsh:R ,Biology and Life Sciences ,Cell Biology ,Sequence Analysis, DNA ,Plant Leaves ,Plant Breeding ,030104 developmental biology ,Genetic Loci ,Chromosomal Translocations ,Plant Biotechnology ,lcsh:Q ,010606 plant biology & botany - Abstract
The growing area of European hazelnut (Corylus avellana L.) is increasing, as well as the number of producing countries, and there is a pressing need for new improved cultivars. Hazelnut conventional breeding process is slow, due to the length of juvenile phase and the high heterozygosity level. The development of genetic linkage maps and the identification of molecular markers tightly linked to QTL (quantitative trait loci) of agronomic interest are essential tools for speeding up the selection of seedlings carrying desired traits through marker-assisted selection. The objectives of this study were to enrich a previous linkage map and confirm QTL related to time of leaf budburst, using an F1 population obtained by crossing Tonda Gentile delle Langhe with Merveille de Bollwiller. Genotyping-by-Sequencing was used to identify a total of 9,999 single nucleotide polymorphism markers. Well saturated linkage maps were constructed for each parent using the double pseudo-testcross mapping strategy. A reciprocal translocation was detected in Tonda Gentile delle Langhe between two non-homologous chromosomes. Applying a bioinformatic approach, we were able to disentangle 'pseudo-linkage' between markers, removing markers around the translocation breakpoints and obtain a linear order of the markers for the two chromosomes arms, for each linkage group involved in the translocation. Twenty-nine QTL for time of leaf budburst were identified, including a stably expressed region on LG_02 of the Tonda Gentile delle Langhe map. The stability of these QTL and their coding sequence content indicates promise for the identification of specific chromosomal regions carrying key genes involved in leaf budburst.
- Published
- 2018
13. The genome-wide identification and transcriptional levels of DNA methyltransferases and demethylases in globe artichoke
- Author
-
Ezio Portis, Andrea Moglia, Silvia Gianoglio, Cinzia Comino, and Alberto Acquadro
- Subjects
0106 biological sciences ,0301 basic medicine ,Enzymologic ,Genetics and Molecular Biology (all) ,Models, Molecular ,Methyltransferase ,Protein Conformation ,lcsh:Medicine ,Plant Science ,Plant Genetics ,01 natural sciences ,Genome ,Biochemistry ,Database and Informatics Methods ,Models ,Gene Expression Regulation, Plant ,Cynara scolymus ,Plant Genomics ,DNA (Cytosine-5-)-Methyltransferases ,lcsh:Science ,Phylogeny ,Plant Proteins ,Genetics ,Histone Demethylases ,Multidisciplinary ,DNA methylation ,biology ,Reverse Transcriptase Polymerase Chain Reaction ,Nucleotides ,Organic Compounds ,Chromosome Mapping ,Chromosomes, Plant ,DNA (Cytosine-5-)-Methyltransferase ,Gene Expression Profiling ,Gene Expression Regulation, Enzymologic ,Genome, Plant ,Isoenzymes ,Biochemistry, Genetics and Molecular Biology (all) ,Agricultural and Biological Sciences (all) ,Genomics ,Plants ,Chromatin ,Enzymes ,Nucleic acids ,Chemistry ,Experimental Organism Systems ,Physical Sciences ,Epigenetics ,DNA modification ,Sequence Analysis ,Chromatin modification ,Research Article ,Chromosome biology ,Biotechnology ,Transposable element ,Cell biology ,Bioinformatics ,Arabidopsis Thaliana ,Brassica ,Research and Analysis Methods ,Chromosomes ,03 medical and health sciences ,Cytosine ,Model Organisms ,Protein Domains ,Sequence Motif Analysis ,Plant and Algal Models ,Gene ,Biology and life sciences ,lcsh:R ,Organic Chemistry ,Organisms ,Chemical Compounds ,Molecular ,Proteins ,Plant ,DNA ,Methyltransferases ,Gene expression profiling ,030104 developmental biology ,Pyrimidines ,Gene Expression Regulation ,biology.protein ,Enzymology ,Demethylase ,lcsh:Q ,Plant Biotechnology ,Gene expression ,010606 plant biology & botany - Abstract
Changes to the cytosine methylation status of DNA, driven by the activity of C5 methyltransferases (C5-MTases) and demethylases, exert an important influence over development, transposon movement, gene expression and imprinting. Three groups of C5-MTase enzymes have been identified in plants, namely MET (methyltransferase 1), CMT (chromomethyltransferases) and DRM (domains rearranged methyltransferases). Here the repertoire of genes encoding C5-MTase and demethylase by the globe artichoke (Cynara cardunculus var. scolymus) is described, based on sequence homology, a phylogenetic analysis and a characterization of their functional domains. A total of ten genes encoding C5-MTase (one MET, five CMTs and four DRMs) and five demethylases was identified. An analysis of their predicted product's protein structure suggested an extensive level of conservation has been retained by the C5-MTases. Transcriptional profiling based on quantitative real time PCR revealed a number of differences between the genes encoding maintenance and de novo methyltransferases, sometimes in a tissue- or development-dependent manner, which implied a degree of functional specialization.
- Published
- 2017
14. 1H-NMR and MALDI-TOF MS as metabolomic quality control tests to classify platelet derived medium additives for GMP compliant cell expansion procedures
- Author
-
Agostini, Francesco, primary, Ruzza, Marta, additional, Corpillo, Davide, additional, Biondi, Luca, additional, Acquadro, Elena, additional, Canepa, Barbara, additional, Viale, Alessandra, additional, Battiston, Monica, additional, Serra, Fabrizio, additional, Aime, Silvio, additional, and Mazzucato, Mario, additional
- Published
- 2018
- Full Text
- View/download PDF
15. High density SNP mapping and QTL analysis for time of leaf budburst in Corylus avellana L.
- Author
-
Torello Marinoni, Daniela, primary, Valentini, Nadia, additional, Portis, Ezio, additional, Acquadro, Alberto, additional, Beltramo, Chiara, additional, Mehlenbacher, Shawn A., additional, Mockler, Todd C., additional, Rowley, Erik R., additional, and Botta, Roberto, additional
- Published
- 2018
- Full Text
- View/download PDF
16. The genome-wide identification and transcriptional levels of DNA methyltransferases and demethylases in globe artichoke
- Author
-
Gianoglio, Silvia, primary, Moglia, Andrea, additional, Acquadro, Alberto, additional, Comino, Cinzia, additional, and Portis, Ezio, additional
- Published
- 2017
- Full Text
- View/download PDF
17. Coding SNPs analysis highlights genetic relationships and evolution pattern in eggplant complexes
- Author
-
Acquadro, Alberto, primary, Barchi, Lorenzo, additional, Gramazio, Pietro, additional, Portis, Ezio, additional, Vilanova, Santiago, additional, Comino, Cinzia, additional, Plazas, Mariola, additional, Prohens, Jaime, additional, and Lanteri, Sergio, additional
- Published
- 2017
- Full Text
- View/download PDF
18. A Genome-Wide Survey of the Microsatellite Content of the Globe Artichoke Genome and the Development of a Web-Based Database
- Author
-
Portis, Ezio, primary, Portis, Flavio, additional, Valente, Luisa, additional, Moglia, Andrea, additional, Barchi, Lorenzo, additional, Lanteri, Sergio, additional, and Acquadro, Alberto, additional
- Published
- 2016
- Full Text
- View/download PDF
19. 1H-NMR and MALDI-TOF MS as metabolomic quality control tests to classify platelet derived medium additives for GMP compliant cell expansion procedures.
- Author
-
Agostini, Francesco, Ruzza, Marta, Corpillo, Davide, Biondi, Luca, Acquadro, Elena, Canepa, Barbara, Viale, Alessandra, Battiston, Monica, Serra, Fabrizio, Aime, Silvio, and Mazzucato, Mario
- Subjects
NUCLEAR magnetic resonance spectroscopy ,MATRIX-assisted laser desorption-ionization ,BLOOD platelet examination ,CURRENT good manufacturing practices ,MESENCHYMAL stem cells ,CELL proliferation - Abstract
Introduction: Ex vivo cell expansion under Good Manufacturing Practice (GMP) guidelines can be performed using medium additives containing human growth factors from platelets. These products can differently affect proliferation of adipose mesenchymal stromal stem cells (ASC). Qualification of medium additive performance is required for validation under GMP regulations: assessment of growth factor concentrations is not sufficient to predict the biological activity of the product batch. Proton nuclear magnetic resonance spectrometry (
1 H-NMR) and matrix-assisted laser desorption/ionization time of flight mass spectroscopy (MALDI-TOF MS) provide wide molecular characterization of samples. Aims: We aimed to assess if1 H-NMR and MALDI-TOF MS techniques can be used as quality control test potentially predicting the impact of a medium additive on cell proliferation. Methods: We tested the impact on ASC growth rate (cell proliferation assessment and cell morphology analysis) of four medium additives, obtained by different methods from human platelet apheresis product. In order to classify each medium additive, we evaluated growth factor concentrations and spectra obtained by1 H-NMR and by MALDI-TOF MS. Results: Medium additive obtained by CaCl2 activation of platelet rich products induced higher proliferation rate vs additive derived from platelet depleted ones. Additives obtained by freeze-and-thaw methods weakly induced ASC proliferation. As expected, principal component analysis of growth factor concentrations did not unravel specific biochemical features characterizing medium additives in relation with their biological activity. Otherwise, while1 H-NMR showed a partial resolution capacity, analysis of MALDI-TOF MS spectra allowed unambiguous distinction between the medium additives we used to differently stimulate cell growth in vitro. Discussion: MALDI-TOF and, despite limitations,1 H-NMR are promising cost effective and reliable quality controls to classify the potential of a medium additive to promote ASC growth. This can represent, after further investigations and appropriate validation, a significant advantage for GMP compliant manufacturing of advanced cell therapy products. [ABSTRACT FROM AUTHOR]- Published
- 2018
- Full Text
- View/download PDF
20. DNA Methylation Profiles and Their Relationship with Cytogenetic Status in Adult Acute Myeloid Leukemia
- Author
-
Alvarez, Sara, primary, Suela, Javier, additional, Valencia, Ana, additional, Fernández, Agustín, additional, Wunderlich, Mark, additional, Agirre, Xabier, additional, Prósper, Felipe, additional, Martín-Subero, José Ignacio, additional, Maiques, Alba, additional, Acquadro, Francesco, additional, Rodriguez Perales, Sandra, additional, Calasanz, María José, additional, Roman-Gómez, Jose, additional, Siebert, Reiner, additional, Mulloy, James C., additional, Cervera, José, additional, Sanz, Miguel Angel, additional, Esteller, Manel, additional, and Cigudosa, Juan C., additional
- Published
- 2010
- Full Text
- View/download PDF
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