PMID- 34160894 OWN - NLM STAT- MEDLINE DCOM- 20220217 LR - 20220217 IS - 1582-4934 (Electronic) IS - 1582-1838 (Print) IS - 1582-1838 (Linking) VI - 25 IP - 16 DP - 2021 Aug TI - Bone marrow mesenchymal stem cell-derived exosomal miR-206 promotes osteoblast proliferation and differentiation in osteoarthritis by reducing Elf3. PG - 7734-7745 LID - 10.1111/jcmm.16654 [doi] AB - MicroRNAs (miRNAs) serve as gene silencers involved in essential cell functions. The role of miR-206 and E74-like factor 3 (Elf3) has been identified in osteoarthritis (OA), while the effect of exosomal miR-206 from bone marrow mesenchymal stem cells (BMSCs) in OA remains largely unknown. Thus, we aim to explore the role of exosomal miR-206 from BMSCs in OA with the involvement of Elf3. BMSCs and BMSC-derived exosomes (BMSC-exos) were obtained and identified. OA mouse models were constructed by anterior cruciate ligament transection and then treated with BMSC-exos or BMSC-exos containing miR-206 mimic/inhibitor. The expression of miR-206, Elf3, inflammatory factors, osteocalcin (OCN) and bone morphogenetic protein 2 (BMP2) in mouse femoral tissues was assessed. The pathological changes in mouse femur tissues were observed. The mouse osteoblasts were identified and treated with untransfected or transfected BMSC-exos, and then, the expression of miR-206, Elf3, OCN and BMP2 was determined. The alkaline phosphatase (ALP) activity, calcium deposition level, OCN secretion, proliferation, apoptosis and cell cycle arrest in osteoblasts were measured. MiR-206 was down-regulated while Elf3 was up-regulated in OA animal and cellular models. Exosomal miR-206 ameliorated inflammation and increased expression of OCN and BMP2 in mouse femoral tissues. Moreover, exosomal miR-206 promoted ALP activity, calcium deposition level, OCN secretion and proliferation and inhibited apoptosis in OA osteoblasts. Overexpressed Elf3 reversed miR-206 up-regulation-induced effects on OA osteoblasts. BMSC-derived exosomal miR-206 promotes proliferation and differentiation of osteoblasts in OA by reducing Elf3. Our research may provide novel targets for OA treatment. CI - (c) 2021 The Authors. Journal of Cellular and Molecular Medicine published by Foundation for Cellular and Molecular Medicine and John Wiley & Sons Ltd. FAU - Huang, Yijiang AU - Huang Y AD - Department of Orthopaedic, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. AD - Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, China. FAU - Zhang, Xiumeng AU - Zhang X AD - Department of Orthopaedic, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. AD - Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, China. FAU - Zhan, Jingdi AU - Zhan J AD - Department of Orthopaedic, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. AD - Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, China. FAU - Yan, Zijiang AU - Yan Z AD - Department of Orthopaedic, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. AD - Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, China. FAU - Chen, Daosen AU - Chen D AD - Department of Orthopaedic, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. AD - Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, China. FAU - Xue, Xinghe AU - Xue X AD - Department of Orthopaedic, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. AD - Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, China. FAU - Pan, Xiaoyun AU - Pan X AUID- ORCID: 0000-0002-9133-9311 AD - Department of Orthopaedic, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China. AD - Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210623 PL - England TA - J Cell Mol Med JT - Journal of cellular and molecular medicine JID - 101083777 RN - 0 (DNA-Binding Proteins) RN - 0 (Elf3 protein, mouse) RN - 0 (MicroRNAs) RN - 0 (Mirn206 microRNA, mouse) RN - 0 (Transcription Factors) SB - IM MH - Animals MH - Cell Differentiation MH - Cell Proliferation MH - Cells, Cultured MH - DNA-Binding Proteins/*antagonists & inhibitors/metabolism MH - Disease Models, Animal MH - Exosomes/*genetics/metabolism MH - Mesenchymal Stem Cells/*cytology/metabolism MH - Mice MH - MicroRNAs/genetics/*pharmacology MH - Osteoarthritis/genetics/metabolism/pathology/*prevention & control MH - Osteoblasts/*cytology/metabolism MH - Transcription Factors/*antagonists & inhibitors/metabolism PMC - PMC8358849 OTO - NOTNLM OT - E74-like factor 3 OT - exosome OT - microRNA-206 OT - osteoarthritis OT - osteoblasts OT - proliferation and differentiation COIS- The authors declare that they have no conflicts of interest. EDAT- 2021/06/24 06:00 MHDA- 2022/02/19 06:00 PMCR- 2021/08/01 CRDT- 2021/06/23 12:42 PHST- 2021/04/28 00:00 [revised] PHST- 2021/03/04 00:00 [received] PHST- 2021/05/04 00:00 [accepted] PHST- 2021/06/24 06:00 [pubmed] PHST- 2022/02/19 06:00 [medline] PHST- 2021/06/23 12:42 [entrez] PHST- 2021/08/01 00:00 [pmc-release] AID - JCMM16654 [pii] AID - 10.1111/jcmm.16654 [doi] PST - ppublish SO - J Cell Mol Med. 2021 Aug;25(16):7734-7745. doi: 10.1111/jcmm.16654. Epub 2021 Jun 23.