PMID- 33727932 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210318 IS - 1687-966X (Print) IS - 1687-9678 (Electronic) VI - 2021 DP - 2021 TI - Semaphorin3B Promotes Proliferation and Osteogenic Differentiation of Bone Marrow Mesenchymal Stem Cells in a High-Glucose Microenvironment. PG - 6637176 LID - 10.1155/2021/6637176 [doi] LID - 6637176 AB - Bone marrow mesenchymal stem cells (BMSCs) play an essential role in osteogenesis and bone metabolism and have already been recognized as one of the most popular seed cells for bone tissue engineering for bone diseases. However, high-glucose (HG) conditions in type 2 diabetes mellitus (T2DM) exert deleterious effects on BMSC proliferation and osteogenic differentiation. Semaphorin 3B (Sema3B) increases osteoblast differentiation in bone metabolism. Here, we determined the role of Sema3B in the proliferation and osteogenic differentiation of BMSCs in the HG microenvironment. The HG microenvironment decreased Sema3B expression in BMSCs. Moreover, HG inhibited BMSC proliferation. Furthermore, HG inhibited osteogenic differentiation in BMSCs by decreasing the expression of bone formation markers, alkaline phosphatase (ALP) activity, and mineralization. However, the administration of recombinant Sema3B reversed all of these effects. Moreover, our study found that Sema3B could activate the Akt pathway in BMSCs. Sema3B rescues defects in BMSC proliferation and osteogenic differentiation in the HG microenvironment by activating the Akt pathway. These effects were significantly reduced by treatment with an Akt inhibitor. Together, these findings demonstrate that Sema3B promotes the proliferation and osteogenic differentiation of BMSCs via the Akt pathway under HG conditions. Our study provides new insights into the potential ability of Sema3B to ameliorate BMSC proliferation and osteogenic differentiation in an HG microenvironment. CI - Copyright (c) 2021 Quan Xing et al. FAU - Xing, Quan AU - Xing Q AUID- ORCID: 0000-0001-6367-5863 AD - Department of Zhujiang New Town Clinic, Guanghua School and Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China. AD - Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China. FAU - Feng, Jingyi AU - Feng J AUID- ORCID: 0000-0001-5064-7484 AD - Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China. AD - Department of Operative Dentistry and Endodontics, Guanghua School and Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China. FAU - Zhang, Xiaolei AU - Zhang X AUID- ORCID: 0000-0003-2410-179X AD - Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China. AD - Department of Operative Dentistry and Endodontics, Guanghua School and Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China. LA - eng PT - Journal Article DEP - 20210226 PL - United States TA - Stem Cells Int JT - Stem cells international JID - 101535822 PMC - PMC7935575 COIS- No conflicts of interest exist regarding the submission of this manuscript, and all authors approved the manuscript for publication. EDAT- 2021/03/18 06:00 MHDA- 2021/03/18 06:01 PMCR- 2021/02/26 CRDT- 2021/03/17 06:47 PHST- 2020/12/02 00:00 [received] PHST- 2021/01/22 00:00 [revised] PHST- 2021/02/08 00:00 [accepted] PHST- 2021/03/17 06:47 [entrez] PHST- 2021/03/18 06:00 [pubmed] PHST- 2021/03/18 06:01 [medline] PHST- 2021/02/26 00:00 [pmc-release] AID - 10.1155/2021/6637176 [doi] PST - epublish SO - Stem Cells Int. 2021 Feb 26;2021:6637176. doi: 10.1155/2021/6637176. eCollection 2021.