机构:[1]Department of Foot and ankle surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China临床科室足踝外科中心首都医科大学附属北京同仁医院首都医科大学附属同仁医院[2]Department of Orthopedics, Beijing Luhe Hospital, Affiliated to Capital Medical University, Beijing, PR China
Tendon-derived stem cells (TDSCs) are proposed as a potential cell-seed for the treatment of tendon injury due to their tenogenic differentiation potential. In this work, we defined the action of long non-coding RNA (lncRNA) muscle differentiation 1 (LINCMD1) in tenogenic differentiation of human TDSCs (hTDSCs).Quantitative real-time PCR (qRT-PCR) was used to assess the levels of LINCMD1, microRNA (miR)-342-3p, and early growth response-1 (EGR1) mRNA. Cell proliferation was detected by the XTT colorimetric assay. Protein expression was quantified by western blot. hTDSCs were grown in an osteogenic medium to induce osteogenic differentiation, and the extent of osteogenic differentiation was assessed by Alizarin Red Staining (ARS). The activity of alkaline phosphatase (ALP) was measured by the ALP Activity Assay Kit. Dual-luciferase reporter and RNA immunoprecipitation (RIP) assays were used to evaluate the direct relationship between miR-342-3p and LINCMD1 or EGR1.Our results showed that enforced expression of LINCMD1 or suppression of miR-342-3p accelerated the proliferation and tenogenic differentiation and reduced osteogenic differentiation of hTDSCs. LINCMD1 regulated miR-342-3p expression by binding to miR-342-3p. EGR1 was identified as a direct and functional target of miR-342-3p, and knockdown of EGR1 reversed the effects of miR-342-3p suppression on cell proliferation and tenogenic and osteogenic differentiation. Furthermore, the miR-342-3p/EGR1 axis mediated the regulation of LINCMD1 on hTDSC proliferation and tenogenic and osteogenic differentiation.Our study suggests the induction of LINCMD1 in tenogenic differentiation of hTDSCs through miR-342-3p/EGR1 axis.
基金:
The present study was supported by Beijing Municipal Administration of Hospitals Incubating Program. NO. PX2021005
第一作者机构:[1]Department of Foot and ankle surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China[*1]No.1, Dongjiaominxiang Street, Dongcheng District, Beijing 100730, China
通讯作者:
通讯机构:[1]Department of Foot and ankle surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China[*1]No.1, Dongjiaominxiang Street, Dongcheng District, Beijing 100730, China
推荐引用方式(GB/T 7714):
Qu Feng,Shen Xuezhen,Wang Ketao,et al.Tenogenic differentiation of human tendon-derived stem cells induced by long non-coding RNA LINCMD1 via miR-342-3p/EGR1 axis[J].CONNECTIVE TISSUE RESEARCH.2023,64(5):479-490.doi:10.1080/03008207.2023.2217258.
APA:
Qu Feng,Shen Xuezhen,Wang Ketao,Sun Chengyi&Li Pengfei.(2023).Tenogenic differentiation of human tendon-derived stem cells induced by long non-coding RNA LINCMD1 via miR-342-3p/EGR1 axis.CONNECTIVE TISSUE RESEARCH,64,(5)
MLA:
Qu Feng,et al."Tenogenic differentiation of human tendon-derived stem cells induced by long non-coding RNA LINCMD1 via miR-342-3p/EGR1 axis".CONNECTIVE TISSUE RESEARCH 64..5(2023):479-490