PMID- 25635980 OWN - NLM STAT- MEDLINE DCOM- 20150604 LR - 20220330 IS - 2284-0729 (Electronic) IS - 1128-3602 (Linking) VI - 19 IP - 1 DP - 2015 Jan TI - Wnt3a promotes human umbilical cord mesenchymal stem cells to differentiate into epidermal-like cells. PG - 86-91 LID - 8339 [pii] AB - OBJECTIVE: Mesenchymal stem cells are a population of pluripotent cells that can differentiate into epidermal-like cells under certain conditions. Wnt3a can promote the proliferation and differentiation of stem cells. However, the role of Wnt3a in the differentiation of human umbilical cord mesenchymal stem cells (hUCMSCs) into epidermal-like cells is unknown. MATERIALS AND METHODS: Third-generation hUCMSCs were cultured in normal medium, epidermal stem cell-conditioned medium, and conditioned medium with added Wnt3a. After culturing for 5 days, the expression of cytokeratin 19 (CK19), an antigen specific for epidermal-like cells, was assessed by immunofluorescence and flow cytometry. The expression of CK19 mRNA was confirmed by reverse transcription-polymerase chain reaction(RT-PCR), and beta-catenin expression was detected by western blot. RESULTS: hUCMSCs differentiated into epidermal-like cells when cultured in conditioned medium as shown by positive immunofluorescence staining for CK19. Flow cytometry showed that the number of cells positive for CK19 in the epidermal stem cell-conditioned medium group was significantly higher than that of control group, but lower than that of the Wnt3a-conditioned group (p < 0.05). RT-PCR showed that the expression level of CK19 mRNA in the conditioned medium group was significantly lower than that of the Wnt3a group (p < 0.01). Westernblots showed that the expression of beta-catenin in the conditioned medium group was significantly lower than that of the Wnt3a group (p < 0.01). CONCLUSIONS: These results suggest that Wnt3a can effectively promote the differentiation of hUCMSCs into epidermal-like cells. FAU - Sun, T-J AU - Sun TJ AD - Department of Burn and Plastic Surgery, Hainan Branch of People's Liberation Army General Hospital, Sanya, People's Republic of China. dochyf@163.com. FAU - Tao, R AU - Tao R FAU - Han, Y-Q AU - Han YQ FAU - Xu, G AU - Xu G FAU - Liu, J AU - Liu J FAU - Han, Y-F AU - Han YF LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Italy TA - Eur Rev Med Pharmacol Sci JT - European review for medical and pharmacological sciences JID - 9717360 RN - 0 (Culture Media, Conditioned) RN - 0 (WNT3A protein, human) RN - 0 (Wnt3A Protein) SB - IM MH - Cell Differentiation/drug effects MH - Cells, Cultured MH - Culture Media, Conditioned MH - *Epidermal Cells MH - Flow Cytometry MH - Humans MH - Mesenchymal Stem Cells/*cytology/*drug effects MH - Umbilical Cord/*cytology/*drug effects MH - Wnt3A Protein/*pharmacology EDAT- 2015/01/31 06:00 MHDA- 2015/06/05 06:00 CRDT- 2015/01/31 06:00 PHST- 2015/01/31 06:00 [entrez] PHST- 2015/01/31 06:00 [pubmed] PHST- 2015/06/05 06:00 [medline] AID - 8339 [pii] PST - ppublish SO - Eur Rev Med Pharmacol Sci. 2015 Jan;19(1):86-91.