PMID- 31938307 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200119 IS - 1936-2625 (Electronic) IS - 1936-2625 (Linking) VI - 11 IP - 4 DP - 2018 TI - Integrin subunits alphaV and beta3 promote the osteogenic differentiation of umbilical cord blood mesenchymal stem cells. PG - 2008-2016 AB - Human umbilical cord-derived mesenchymal stem cells (hUCMSCs) are multipotent cells that have self-renewal properties and can differentiate into osteocytes, adipocytes, cartilage and extoderm. Bone regeneration and repair are important for the repair of bone injury, skeletal development or continuous remodeling throughout adult life. Thus, investigating the factors influencing osteocyte regeneration from hUCMSCs could be conducive to advancements in skeletal repair and the repair of bone injury. Previous reports have demonstrated that single integrin subunits (alphaV, beta3, alpha5) and collagen I contribute to the osteogenic differentiation of human mesenchymal stem cells (hMSCs). However, the functions of the vitronectin receptor alphaV and beta3 in the osteogenic differentiation of hUCMSCs and bone regeneration remain unclear. Run-related transcription factor 2 (RUNX2) is considered to be an early osteoblastic gene that is upregulated during the osteogenic differentiation of hUCMSCs. Meanwhile, bone sialoprotein (BSP) and collagen I are the most common early markers of osteoblast differentiation. Herein, we found that the mRNA and protein expression of alphaV, beta3, RUNX2 and collagen I were upregulated during the osteogenic differentiation of hUCMSCs. Overexpression of alphaV and beta3 in hMSCs increased the levels of RUNX2, BSP, and collagen I, decreased the number of adipocytes and promoted the osteogenic differentiation of hUCMSCs. Meanwhile, downregulation of alphaV and beta3 decreased the levels of RUNX2, BSP, and collagen I, increased the number of adipocytes and blocked the osteogenic differentiation of hUCMSCs. In conclusion, the integrin subunits alphaV and beta3 can promote the osteogenic differentiation of hUCMSCs and encourage bone formation. CI - IJCEP Copyright (c) 2018. FAU - Zheng, Hongyu AU - Zheng H AD - Department of Emergency, First Hospital Affiliated to Kunming Medical University Kunming 650032, Yunnan, China. FAU - Li, Xingguo AU - Li X AD - Department of Orthopedics, First Hospital Affiliated to Kunming Medical University Kunming 650032, Yunnan, China. FAU - Chen, Yuan AU - Chen Y AD - Department of Outpatient, First Hospital Affiliated to Kunming Medical University Kunming 650032, Yunnan, China. FAU - Zhou, Rudan AU - Zhou R AD - Department of Orthopedics, First Hospital Affiliated to Kunming Medical University Kunming 650032, Yunnan, China. FAU - Zhao, Hongbin AU - Zhao H AD - Department of Emergency, First Hospital Affiliated to Kunming Medical University Kunming 650032, Yunnan, China. FAU - Qian, Chuanyun AU - Qian C AD - Department of Emergency, First Hospital Affiliated to Kunming Medical University Kunming 650032, Yunnan, China. LA - eng PT - Journal Article DEP - 20180401 PL - United States TA - Int J Clin Exp Pathol JT - International journal of clinical and experimental pathology JID - 101480565 PMC - PMC6958194 OTO - NOTNLM OT - Human umbilical cord-derived mesenchymal stem cells (hUCMSCs) OT - RUNX2 OT - collagen I OT - osteogenic differentiation OT - alphaV OT - beta3 COIS- None. EDAT- 2018/04/01 00:00 MHDA- 2018/04/01 00:01 PMCR- 2018/04/01 CRDT- 2020/01/16 06:00 PHST- 2017/07/03 00:00 [received] PHST- 2017/08/24 00:00 [accepted] PHST- 2020/01/16 06:00 [entrez] PHST- 2018/04/01 00:00 [pubmed] PHST- 2018/04/01 00:01 [medline] PHST- 2018/04/01 00:00 [pmc-release] PST - epublish SO - Int J Clin Exp Pathol. 2018 Apr 1;11(4):2008-2016. eCollection 2018.