PMID- 37340915 OWN - NLM STAT- MEDLINE DCOM- 20230623 LR - 20230623 IS - 1007-8738 (Print) IS - 1007-8738 (Linking) VI - 39 IP - 6 DP - 2023 Jun TI - [miR-877-3p causes osteoporosis in mice by inhibiting MCP-1 secretion from mouse bone marrow mesenchymal stem cells and the migration and apoptosis of T lymphocytes]. PG - 481-487 AB - Objective To investigate the effects of miR-877-3p on migration and apoptotic T lymphocytes of bone mesenchymal stem cells (BMSCs). Methods The model of osteoporosis induced by bilateral ovariectomy (OVX) and sham operation was established. At 8 weeks after operation, the bone parameters of the two groups were detected by micro-CT. The levels of monocyte chemotactic protein 1(MCP-1) in BMSCs were detected by ELISA. BMSC in OVX group and sham group were co-cultured with T lymphocytes, respectively. The migration ability of T lymphocytes in the two groups was observed by Transwell(TM) assay with PKH26 staining and apoptosis of T lymphocytes were detected by flow cytometry. Reverse transcription PCR was used to detect the expression of miR-877-3p in BMSCs. miR-877-3p was overexpressed or down-regulated by cell transfection. The level of MCP-1 secreted by BMSCs in each group was detected by ELISA. The migration and apoptosis of T lymphocytes were detected by the above methods. Results The number of trabecular bone and bone mineral density in OVX group were lower than those in sham group. The levels of MCP-1 secretion, chemotactic and apoptotic T lymphocyte ability of BMSCs in OVX group were also lower than those in sham group. The expression level of miR-877-3p in BMSC in OVX group was higher than that in sham group. After overexpression of BMSC miR-877-3p, the levels of MCP-1 secreted from BMSCs, and apoptotic T lymphocytes decreased, while the results were opposite after down-regulation of miR-877-3p. Conclusion miR-877-3p may be one of the causes of osteoporosis by inhibiting MCP-1 secretion of BMSCs and the migration and apoptosis of T lymphocytes. FAU - Qin, Jie AU - Qin J AD - Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, China. FAU - Zhang, Yan AU - Zhang Y AD - Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, China. *Corresponding author, E-mail: 500439@hospital.cqmu.edu.cn. LA - chi PT - English Abstract PT - Journal Article PL - China TA - Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi JT - Xi bao yu fen zi mian yi xue za zhi = Chinese journal of cellular and molecular immunology JID - 101139110 RN - 0 (Chemokine CCL2) RN - 0 (MicroRNAs) RN - 0 (MIRN877 microRNA, mouse) SB - IM MH - Animals MH - Female MH - Mice MH - Apoptosis/genetics MH - Bone Marrow Cells/metabolism MH - Cell Differentiation MH - Chemokine CCL2/genetics/metabolism MH - *Mesenchymal Stem Cells/metabolism MH - *MicroRNAs/genetics/metabolism MH - Osteogenesis MH - *Osteoporosis/genetics MH - T-Lymphocytes/metabolism EDAT- 2023/06/21 06:42 MHDA- 2023/06/22 06:42 CRDT- 2023/06/21 04:23 PHST- 2023/06/22 06:42 [medline] PHST- 2023/06/21 06:42 [pubmed] PHST- 2023/06/21 04:23 [entrez] PST - ppublish SO - Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi. 2023 Jun;39(6):481-487.