PMID- 25289050 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20211021 IS - 1792-0981 (Print) IS - 1792-1015 (Electronic) IS - 1792-0981 (Linking) VI - 8 IP - 5 DP - 2014 Nov TI - Karyotype stability of human umbilical cord-derived mesenchymal stem cells during in vitro culture. PG - 1508-1512 AB - The aim of this study was to investigate whether the chromosomes of human umbilical cord-derived mesenchymal stem cells (hUCMSCs) change following in vitro culture for several generations. In the present study, umbilical cords from two healthy infants following cesarean delivery were collected aseptically and hUCMSCs were isolated by digestion with collagenase and trypsin, and then cultured in vitro. hUCMSCs with fibroblastic morphology were presented from the human umbilical cord tissue after 7 days of adherent culture. When cultured for 6 passages in vitro, the hUCMSCs maintained a stable spindle-shaped morphology. Cells reached the logarithmic growth phase after 3-4 days of culture. In addition, CD13, CD29, CD44, CD90 and CD105 were highly expressed in generations P3-P6. The expression of CD31, CD34, CD45 and HLA-DR was negative. Furthermore, karyotype analysis revealed a normal diploid karyotype with 46 chromosomes and no abnormal changes were found in chromosome structure. These findings suggest that when cultured for 6 passages in vitro, hUCMSCs maintain a stable immunophenotype and chromosome structure, which provides an experimental basis for the safety of hUCMSC cytotherapy. FAU - Ruan, Zhong-Bao AU - Ruan ZB AD - Department of Cardiology, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China. FAU - Zhu, Li AU - Zhu L AD - Department of Cardiology, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China. FAU - Yin, Yi-Gang AU - Yin YG AD - Department of Cardiology, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China. FAU - Chen, Ge-Cai AU - Chen GC AD - Department of Cardiology, Taizhou People's Hospital, Taizhou, Jiangsu 225300, P.R. China. LA - eng PT - Journal Article DEP - 20140918 PL - Greece TA - Exp Ther Med JT - Experimental and therapeutic medicine JID - 101531947 PMC - PMC4186357 OTO - NOTNLM OT - human umbilical cord-derived mesenchymal stem cells OT - karyotyping OT - serial passage EDAT- 2014/10/08 06:00 MHDA- 2014/10/08 06:01 PMCR- 2014/09/18 CRDT- 2014/10/08 06:00 PHST- 2014/02/22 00:00 [received] PHST- 2014/07/23 00:00 [accepted] PHST- 2014/10/08 06:00 [entrez] PHST- 2014/10/08 06:00 [pubmed] PHST- 2014/10/08 06:01 [medline] PHST- 2014/09/18 00:00 [pmc-release] AID - etm-08-05-1508 [pii] AID - 10.3892/etm.2014.1977 [doi] PST - ppublish SO - Exp Ther Med. 2014 Nov;8(5):1508-1512. doi: 10.3892/etm.2014.1977. Epub 2014 Sep 18.