title: Changes in  CDKN2D , TP53, and miR125a expression: potential role in the evaluation of human amniotic fluid-derived mesenchymal stromal cell fitness.
abstract: Human amniotic fluid-derived mesenchymal stromal cells (hAMSC) have become one of the main cell populations used in regenerative medicine and for the study of various clinical disorders. These cells have a great capacity for proliferation and differentiation and do not form teratomas when transplanted into animal models, and their stemness seems to be between embryonic cells and adult mesenchymal cells. Before their use in cell therapy, they must be cultured and expanded in vitro, but the effect this process has on their fitness, a determining factor for the success or failure of cell therapy, is unknown. We undertook a follow-up of gene and microRNAs (miRNAs) expression using microarray of hAMSC for the first 15 passages. Significant changes were noted in the expression of various mRNAs and miRNAs, particularly down-regulation of TP53, increased expression of hsa-miR-125a and up-regulation of CDKN2D . The variations in TP53 and hsa-miR-125a may act as an indicator of the stemness of the hAMSC, whereas CDKN2D may indicate the begging of early senescence process in a p53-independent mechanism. The genes described in this study will help evaluate the fitness of hAMSC, thus guaranteeing their biological quality for use in regenerative medicine.
authors: Department of Immunology, Carlos Haya Regional University Hospital, Malaga 29010, Spain. josem.miranda.exts@juntadeandalucia.es
authors: Jose M
authors: JM
authors: Miranda-Sayago
authors: Nieves
authors: N
authors: Fernandez-Arcas
authors: Armando
authors: A
authors: Reyes-Engel
authors: Carmen
authors: C
authors: Benito
authors: Isidoro
authors: I
authors: Narbona
authors: Antonio
authors: A
authors: Alonso
mesh_terms: D000653:Amniotic Fluid / Q000166:cytology* / Q000378:metabolism; D002448:Cell Adhesion; D002454:Cell Differentiation; D049109:Cell Proliferation; D002470:Cell Survival; D002478:Cells, Cultured; D019295:Computational Biology / Q000379:methods; D050764:Cyclin-Dependent Kinase Inhibitor p19 / Q000235:genetics / Q000378:metabolism*; D005786:Gene Expression Regulation; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000378:metabolism*; D035683:MicroRNAs / Q000235:genetics / Q000378:metabolism*; D020411:Oligonucleotide Array Sequence Analysis; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D044968:Regenerative Medicine / Q000379:methods; D016159:Tumor Suppressor Protein p53 / Q000235:genetics / Q000378:metabolism*
chemical_list: C493974:CDKN2D protein, human; D050764:Cyclin-Dependent Kinase Inhibitor p19; C531888:MIRN125 microRNA, human; D035683:MicroRNAs; D012333:RNA, Messenger; C495901:TP53 protein, human; D016159:Tumor Suppressor Protein p53