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Efficient differentiation of vascular smooth muscle cells from Wharton's Jelly mesenchymal stromal cells using human platelet lysate: A potential cell source for small blood vessel engineering

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World Journal of Stem Cells 2020年第3期12卷 203-221页

作者： Panagiotis Mallis Aggeliki Papapanagiotou michalis katsimpoulas Alkiviadis Kostakis Gerasimos Siasos Eva Kassi Catherine Stavropoulos-Giokas Efstathios Michalopoulos Hellenic Cord Blood Bank Biomedical Research Foundation Academy of AthensAthens 11527Greece Department of Biological Chemistry Medical SchoolNational and Kapodistrian Univesity of AthensAthens 15772Greece Center of Experimental Surgery Biomedical Research Foundation Academy of AthensAthens 11527Greece First Department of Cardiology “Hippokration”HospitalUniversity of Athens Medical SchoolAthens 15231Greece First Department of Internal Medicine Laiko HospitalMedical SchoolNational and Kapodistrian University of AthensAthens 11527Greece

BACKGROUND The development of fully functional small diameter vascular grafts requires both a properly defined vessel conduit and tissue-specific cellular *** stromal cells(MSCs) derived from the Wharton's Jelly(WJ) tissue can be used as a source for obtaining vascular smooth muscle cells(VSMCs),while the human umbilical arteries(h UAs) can serve as a scaffold for blood vessel *** To develop VSMCs from WJ-MSCs utilizing umbilical cord blood platelet *** WJ-MSCs were isolated and expanded until passage(P) 4. WJ-MSCs were properly defined according to the criteria of the International Society for Cell and Gene Therapy. Then, these cells were differentiated into VSMCs with the use of platelet lysate from umbilical cord blood in combination with ascorbic acid,followed by evaluation at the gene and protein levels. Specifically, gene expression profile analysis of VSMCs for ACTA2, MYH11, TGLN, MYOCD, SOX9,NANOG homeobox, OCT4 and GAPDH, was performed. In addition,immunofluorescence against ACTA2 and MYH11 in combination with DAPI staining was also performed in VSMCs. HUAs were decellularized and served as scaffolds for possible repopulation by VSMCs. Histological and biochemical analyses were performed in repopulated h *** WJ-MSCs exhibited fibroblastic morphology, successfully differentiating into"osteocytes", "adipocytes" and "chondrocytes", and were characterized by positive expression(> 90%) of CD90, CD73 and CD105. In addition, WJ-MSCs were successfully differentiated into VSMCs with the proposed differentiation protocol. VSMCs successfully expressed ACTA2, MYH11, MYOCD, TGLN and SOX9. Immunofluorescence results indicated the expression of ACTA2 and MYH11 in VSMCs. In order to determine the functionality of VSMCs, h UAs were isolated and decellularized. Based on histological analysis, decellularized h UAs were free of any cellular or nuclear materials, while their extracellular matrix retained intact. Then, repopulat

关键词： Vascular smooth muscle cells Decellularized umbilical arteries Mesenchymal stromal cells MYOCD Cardiovascular disease Blood vessels

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