PMID- 35990247 OWN - NLM STAT- MEDLINE DCOM- 20220823 LR - 20220823 IS - 1875-8630 (Electronic) IS - 0278-0240 (Print) IS - 0278-0240 (Linking) VI - 2022 DP - 2022 TI - The Role of Gap Junctions in the Generation of Smooth Muscle Cells from Bone Marrow Mesenchymal Stem Cells. PG - 1491327 LID - 10.1155/2022/1491327 [doi] LID - 1491327 AB - BACKGROUND: Studies have shown that stem cell transplantation can improve smooth muscle cell (SMC) regeneration and remodelling. Gap junctions can enhance the cytoprotective effects of neighbouring cells. We investigated the effect of gap junctions on the differentiation of bone marrow mesenchymal stem cells (BMSCs) into SMCs. MATERIALS AND METHODS: Rat BMSCs and SMCs were obtained from the bone marrow and bladder of Sprague-Dawley rats, respectively. Flow cytometry and multilineage differentiation were performed to assess the characteristics of these cells. BMSCs and SMCs were incubated together in cocultures in the presence and absence of heptanol, an uncoupler of gap junctions. Cocultures were divided into three groups consisting of a contact coculture, noncontact coculture, and contact coculture plus heptanol groups. The expression of BMSC-specific markers and the effect of gap junctions on the differentiation of BMSCs were evaluated by performing real-time reverse transcription-polymerase chain reaction, immunofluorescence analysis, and western blotting after cocultures. RESULTS: CD90 and CD44 were markedly expressed, and CD31 and CD45 were weakly or not expressed in BMSCs. The cells also showed good osteogenic and adipogenic differentiation ability. Compared with the noncontact coculture group, the SMC markers such as alpha-SMA, calponin, and connexin43 increased in the contact coculture group. The effect of contact in the coculture group was significantly weakened by heptanol. CONCLUSIONS: The results suggested that gap junctions play an important role in the generation of SMCs from BMSCs. The formation of SMCs can potentially be used to repair the sphincter muscle of patients with stress urinary incontinence. CI - Copyright (c) 2022 Ying Wang et al. FAU - Wang, Ying AU - Wang Y AD - Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, Women and Children's Hospital of Chongqing Medical University, Chongqing, China. FAU - Yang, Boping AU - Yang B AD - Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, Women and Children's Hospital of Chongqing Medical University, Chongqing, China. FAU - Hu, Pan AU - Hu P AD - Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, Women and Children's Hospital of Chongqing Medical University, Chongqing, China. FAU - Lu, Shentao AU - Lu S AD - Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, Women and Children's Hospital of Chongqing Medical University, Chongqing, China. FAU - Lei, Li AU - Lei L AUID- ORCID: 0000-0003-2806-210X AD - Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, Women and Children's Hospital of Chongqing Medical University, Chongqing, China. FAU - Liu, Lubin AU - Liu L AUID- ORCID: 0000-0002-5718-2541 AD - Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, Women and Children's Hospital of Chongqing Medical University, Chongqing, China. LA - eng PT - Journal Article DEP - 20220812 PL - United States TA - Dis Markers JT - Disease markers JID - 8604127 RN - 8JQ5607IO5 (Heptanol) SB - IM MH - Animals MH - *Bone Marrow Cells/metabolism MH - Cell Differentiation MH - Cells, Cultured MH - Gap Junctions MH - Heptanol/metabolism/pharmacology MH - *Mesenchymal Stem Cells/metabolism MH - Myocytes, Smooth Muscle/metabolism MH - Rats MH - Rats, Sprague-Dawley PMC - PMC9391152 COIS- The authors report no conflicts of interest in this work. EDAT- 2022/08/23 06:00 MHDA- 2022/08/24 06:00 PMCR- 2022/08/12 CRDT- 2022/08/22 03:52 PHST- 2022/06/07 00:00 [received] PHST- 2022/08/02 00:00 [revised] PHST- 2022/08/03 00:00 [accepted] PHST- 2022/08/22 03:52 [entrez] PHST- 2022/08/23 06:00 [pubmed] PHST- 2022/08/24 06:00 [medline] PHST- 2022/08/12 00:00 [pmc-release] AID - 10.1155/2022/1491327 [doi] PST - epublish SO - Dis Markers. 2022 Aug 12;2022:1491327. doi: 10.1155/2022/1491327. eCollection 2022.