PMID- 26129933 OWN - NLM STAT- MEDLINE DCOM- 20160518 LR - 20181202 IS - 1791-3004 (Electronic) IS - 1791-2997 (Linking) VI - 12 IP - 3 DP - 2015 Sep TI - Characteristics of human umbilical cord mesenchymal stem cells during ex vivo expansion. PG - 4320-4325 LID - 10.3892/mmr.2015.3999 [doi] AB - Human umbilical cord mesenchymal stem cells (hUCMSCs) have potential clinical applications in different types of diseases. In order to acquire enough cells, hUCMSCs have to be expanded ex vivo. However, it remains to be elucidated whether the characteristics of hUCMSCs are altered during ex vivo expansion. In the present study, the quality of hUCMSCs, which is important for successful therapeutic use, was systematically examined during hUCMSC expansion ex vivo. Morphologically, hUCMSCs exhibited no visible changes during culture. In addition, hUCMSCs retained their proliferative ability between passages 0-5. At the molecular level, the cells continued expressing the specific positive surface markers, CD29, CD73 and CD90, and did not express the negative surface markers, CD14, CD34 or CD45, during culture ex vivo. Furthermore, the hUCMSCs exhibited low immunogenicity, which was maintained when cultured for five passages. However, the immunological properties of hUCMSCs were altered at passage 10, at which the percentage of hUCMSCs expressing human leukocyte antigen‑I was significantly increased. Collectively, these results suggested that hUCMSCs used for cell-based therapies require obtaining from cells, which have been expanded for fewer than five passages. FAU - Li, Shengying AU - Li S AD - Department of Pharmacology, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China. FAU - Wang, Yuxia AU - Wang Y AD - Department of Pathophysiology, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China. FAU - Guan, Liping AU - Guan L AD - Department of Functional Science Laboratory, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China. FAU - Ji, Mingli AU - Ji M AD - Department of Physiology, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150625 PL - Greece TA - Mol Med Rep JT - Molecular medicine reports JID - 101475259 RN - 0 (Antigens, CD) RN - 0 (HLA Antigens) SB - IM MH - Antigens, CD/metabolism MH - Cell Differentiation MH - Cell Proliferation MH - Cell Shape MH - Cells, Cultured MH - HLA Antigens/metabolism MH - Humans MH - Mesenchymal Stem Cells/*physiology MH - Umbilical Cord/cytology EDAT- 2015/07/02 06:00 MHDA- 2016/05/19 06:00 CRDT- 2015/07/02 06:00 PHST- 2014/05/15 00:00 [received] PHST- 2015/01/30 00:00 [accepted] PHST- 2015/07/02 06:00 [entrez] PHST- 2015/07/02 06:00 [pubmed] PHST- 2016/05/19 06:00 [medline] AID - 10.3892/mmr.2015.3999 [doi] PST - ppublish SO - Mol Med Rep. 2015 Sep;12(3):4320-4325. doi: 10.3892/mmr.2015.3999. Epub 2015 Jun 25.