PMID- 33344440 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201222 IS - 2296-634X (Print) IS - 2296-634X (Electronic) IS - 2296-634X (Linking) VI - 8 DP - 2020 TI - Nesfatin-1 Promotes the Osteogenic Differentiation of Tendon-Derived Stem Cells and the Pathogenesis of Heterotopic Ossification in Rat Tendons via the mTOR Pathway. PG - 547342 LID - 10.3389/fcell.2020.547342 [doi] LID - 547342 AB - Heterotopic ossification (HO) is a pathological condition involved in tendinopathy. Adipokines are known to play a key role in HO of tendinopathy. Nesfatin-1, an 82-amino acid adipokine is closely reportedly associated with diabetes mellitus (DM), which, in turn, is closely related to tendinopathy. In the present study, we aimed to investigate the effects of nesfatin-1 on the osteogenic differentiation of tendon-derived stem cells (TDSCs) and the pathogenesis of tendinopathy in rats. In vitro, TDSCs were incubated in osteogenic induction medium for 14 days with different nesfatin-1 concentration. In vivo, Sprague Dawley rats underwent Achilles tenotomy to evaluate the effect of nesfatin-1 on tendinopathy. Our results showed that the expression of nesfatin-1 expression in tendinopathy patients was significantly higher than that in healthy subjects. Nesfatin-1 affected the cytoskeleton and reduced the migration ability of TDSCs in vitro. Furthermore, nesfatin-1 inhibited the expression of Scx, Mkx, and Tnmd and promoted the expression of osteogenic genes, such as COL1a1, ALP, and RUNX2; these results suggested that nesfatin-1 inhibits cell migration, adversely impacts tendon phenotype, promotes osteogenic differentiation of TDSCs and the pathogenesis of HO in rat tendons. Moreover, we observed that nesfatin-1 suppressed autophagy and activated the mammalian target of rapamycin (mTOR) pathway both in vitro and in vivo. The suppression of the mTOR pathway alleviated nesfatin-1-induced HO development in rat tendons. Thus, nesfatin-1 promotes the osteogenic differentiation of TDSC and the pathogenesis of HO in rat tendons via the mTOR pathway; these findings highlight a new potential therapeutic target for tendinopathy. CI - Copyright (c) 2020 Xu, Zhang, Chen, Moqbel, He, Ma, Jiang, Xiong and Wu. FAU - Xu, Kai AU - Xu K AD - Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China. FAU - Zhang, Zhanfeng AU - Zhang Z AD - Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China. AD - Department of Orthopedic Surgery, The First People's Hospital of Huzhou, Huzhou, China. FAU - Chen, Mengyao AU - Chen M AD - Department of Medical Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China. FAU - Moqbel, Safwat Adel Abdo AU - Moqbel SAA AD - Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China. FAU - He, Yuzhe AU - He Y AD - Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China. FAU - Ma, Chiyuan AU - Ma C AD - Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China. FAU - Jiang, Lifeng AU - Jiang L AD - Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China. FAU - Xiong, Yan AU - Xiong Y AD - Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China. FAU - Wu, Lidong AU - Wu L AD - Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China. LA - eng PT - Journal Article DEP - 20201203 PL - Switzerland TA - Front Cell Dev Biol JT - Frontiers in cell and developmental biology JID - 101630250 PMC - PMC7744791 OTO - NOTNLM OT - mTOR pathway OT - nesfatin-1 OT - osteogenic tendon differentiation OT - tendinopathy OT - tendon-derived stem cells COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2020/12/22 06:00 MHDA- 2020/12/22 06:01 PMCR- 2020/01/01 CRDT- 2020/12/21 06:08 PHST- 2020/03/31 00:00 [received] PHST- 2020/11/13 00:00 [accepted] PHST- 2020/12/21 06:08 [entrez] PHST- 2020/12/22 06:00 [pubmed] PHST- 2020/12/22 06:01 [medline] PHST- 2020/01/01 00:00 [pmc-release] AID - 10.3389/fcell.2020.547342 [doi] PST - epublish SO - Front Cell Dev Biol. 2020 Dec 3;8:547342. doi: 10.3389/fcell.2020.547342. eCollection 2020.