从lncRNA MGC-Mirg与miRNA-377-3p构成的ceRNA网络探讨荣筋拈痛方调控内质网应激延缓骨关节炎软骨退变的机制
批准号:
82104888
项目类别:
青年科学基金项目(C类)
资助金额:
30.0 万元
负责人:
付长龙
依托单位:
学科分类:
中医骨伤科学
结题年份:
2024
批准年份:
2021
项目状态:
已结题
项目参与者:
付长龙
中文摘要
骨关节炎严重影响中老年人的生命健康。而软骨细胞内质网应激是加剧骨关节炎病理退变的重要事件。源于清代宫廷秘方之荣筋拈痛方具有补肝肾、祛风湿之效,临床治疗骨关节炎具有良效。课题组前期研究证实,荣筋拈痛方可调控内质网应激反应,改善骨关节炎软骨组织结构,但其是否从内质网应激关联的ceRNA调控网络发挥作用的机制尚需进一步阐明。由此提出假说:荣筋拈痛方通过调控LncRNA MGC-Mirg与miRNA-377-3p构成的与内质网应激关联的ceRNA网络,进而延缓骨关节炎的病理进程。围绕该假说,本课题以骨关节炎小鼠模型和shRNA Mirg转染的软骨细胞为研究对象,运用基因编辑、悬液芯片、双荧光素酶法、荧光双标染色等技术进行验证,以期为该方临床应用提供实验依据。
英文摘要
Osteoarthritis seriously harms the life and health of middle and old age residents. Endoplasmic reticulum stress (ERS) has been involved in the pathological process of osteoarthritic, endangers homeostasis in chondrocytes. The Rongjin Niantong decoction derived from the Qing dynasty palace secret recipe has the effect of tonifying the liver and kidney, expelling wind and damp, which has good effect on the clinical treatment of osteoarthritis. Previous studies from our team have confirmed that Rongjin Niantong decoction can improve the cartilage structure of osteoarthritis by regulating ERS. However, the mechanism of whether it acts from the ceRNA regulatory network related to the ERS still needs to be further clarified. So we put forward a hypothesis that Rongjin Niantong decoction delays the pathological process of osteoarthritis by affecting ceRNA regulatory network formed by LncRNA MGC-Mirg and miRNA-377-3p related to ERS. Around this hypothesis, in order to further study its mechanism which of Rongjin Niantong decoction delays the pathological process of osteoarthritis by affecting ceRNA regulatory network, gene editing, suspension chip, double luciferase method, fluorescent double standard staining and other technologies will be applied in the mouse model of osteoarthritis and LncRNA MGC-Mirg shRNA chondrocyte, so as to provide experimental basis for the clinical application of this prescription.
源于清代宫廷秘方之荣筋拈痛方临床治疗骨关节炎具有良效,但其作用机制尚未完全阐明。软骨细胞内质网应激引起的凋亡是骨关节炎软骨退变的关键病理因素,而基于相关lncRNA与miRNA的互作关系在调控骨关节炎内质网应激中发挥了重要作用。本研究以骨关节炎小鼠模型及lncRNA MGC-Mirg沉默的软骨细胞模型为研究对象,运用基因编辑、分子生物学及影像学等技术,探讨荣筋拈痛方通过介导lncRNA MGC-Mirg、miRNA-377-3p改善内质网应激,进而延缓骨关节炎的软骨退变的机制。结果显示:(1)荣筋拈痛方可改善骨关节炎小鼠的软骨形态,延缓软骨退变;降低OA小鼠血清CHOP、EDEM1等含量表达,下调OA小鼠关节软骨lncRNA MGC-Mirg及CHOP、EDEM1、Grp78、PERK、ATF4表达,上调miRNA-377-3p水平,抑制OA内质网应激反应;(2)lncRNA MGC-Mirg在毒胡萝卜素诱导的内质网应激软骨细胞胞质中高表达,且沉默lncRNA MGC-Mirg可以下调内质网应激软骨细胞中EDEM1、BIP、PERK、ATF4、CHOP的基因水平和蛋白含量;荣筋拈痛方可下调软骨细胞中lncRNA MGC-Mirg表达,降低细胞中EDEM1、BIP、PERK、ATF4、CHOP及Caspase3基因水平和蛋白含量,恢复细胞Ca2+稳态。以上研究结果表明荣筋拈痛方可通过调控lncRNA MGC-Mirg、miRNA-377-3p改善内质网应激,延缓OA软骨退变,为荣筋拈痛方临床治疗骨性关节炎提供实验依据。另外,基于相关的lncRNA、miRNA的调控关系研究了荣筋拈痛方之君药牛膝中重要活性成分之牛膝多糖防治骨关节炎的作用机制,进一步明确其改善OA内质网应激,延缓OA退变的机制。.本研究成果发表学术论文5篇,其中SCI源期刊收录论文1篇。
国内基金
海外基金