中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (16): 3326-3334.doi: 10.12307/2025.444

• 组织工程软骨材料 tissue-engineered cartilage • 上一篇    下一篇

携载microRNA-140外泌体/海藻酸钠/胶原水凝胶修复关节软骨损伤

陈明伟1,余雯莉2,夏苏杭1,陈  宾1,陈文忠1,李锋侦1,周  宇1,司文腾1   

  1. 郑州市骨科医院(河南大学附属郑州市骨科医院)关节病科Ⅰ,河南省郑州市   450000;2郑州大学第一附属医院静脉用药调配中心,河南省郑州市   450000
  • 收稿日期:2024-03-25 接受日期:2024-05-10 出版日期:2025-06-08 发布日期:2024-09-02
  • 通讯作者: 司文腾,硕士,主任医师,硕士生导师,郑州市骨科医院(河南大学附属郑州市骨科医院)关节病科Ⅰ,河南省郑州市 450000
  • 作者简介:陈明伟,男,1983年生,河南省项城市人,汉族,博士,副主任医师,主要从事骨关节外科基础与临床方面的研究。
  • 基金资助:
    河南省医学科技攻关计划项目(LHGJ20230769),项目负责人:陈明伟

rticular cartilage injury repaired with microRNA-140 exosomes/sodium alginate/collagen hydrogel

Chen Mingwei1, Yu Wenli2, Xia Suhang1, Chen Bin1, Chen Wenzhong1, Li Fengzhen1, Zhou Yu1, Si Wenteng1   

  1. 1Department I of Joint Disease, Zhengzhou Orthopedic Hospital (Zhengzhou Orthopedic Hospital Affiliated to Henan University), Zhengzhou 450000, Henan Province, China; 2Intravenous Medication Dispensing Center of First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, Henan Province, China
  • Received:2024-03-25 Accepted:2024-05-10 Online:2025-06-08 Published:2024-09-02
  • Contact: Si Wenteng, Master, Chief physician, Master’s supervisor, Department I of Joint Disease, Zhengzhou Orthopedic Hospital (Zhengzhou Orthopedic Hospital Affiliated to Henan University), Zhengzhou 450000, Henan Province, China
  • About author:Chen Mingwei, MD, Associate chief physician, Department I of Joint Disease, Zhengzhou Orthopedic Hospital (Zhengzhou Orthopedic Hospital Affiliated to Henan University), Zhengzhou 450000, Henan Province, China
  • Supported by:
    Henan Province Medical Science and Technology Research Program Project, No. LHGJ20230769 (to CMW)

摘要:

文题释义:
骨关节炎:是一种由多因素共同作用导致的关节退行性疾病,以关节软骨破坏、滑膜炎、软骨下骨硬化或囊性变、关节边缘骨质增生及骨赘形成为主要病理特征。骨关节炎的发病与年龄、创伤、炎症、肥胖及劳损等因素相关。目前的治疗方式主要是早期口服药物或关节腔内注射玻璃酸钠来短期内缓解症状,晚期多进行微骨折术、软骨移植术、关节置换术等。
外泌体:是多囊泡体与质膜的胞质融合后释放到细胞外基质中的小囊泡,呈圆盘状,直径在30-150 nm之间,包含多种具有重要功能的蛋白质、脂质与核酸,可转移至其他细胞中进而影响受体细胞功能。

背景:研究已证实,上调microRNA-140表达可部分抑制膝关节软骨组织与细胞的骨关节炎样改变,延缓骨关节炎进程,提示microRNA-140参与了骨关节炎的发病机制。
目的:采用海藻酸钠/胶原水凝胶负载过表达microRNA-140的外泌体,进一步分析microRNA-140参与骨关节炎的相关机制。
方法:利用慢病毒感染大鼠骨髓间充质干细胞使其过表达microRNA-140,随后分离提取外泌体,得到过表达microRNA-140的外泌体。制备负载外泌体的海藻酸钠/胶原水凝胶。采用随机数字表法将32只SD大鼠随机分为4组,每组8只:正常对照组不进行任何处理,骨关节炎组、未转染外泌体组、转染外泌体组均通过膝关节腔内注射碘乙酸钠的方式建立骨关节炎模型,造模2周后,骨关节炎组膝关节腔内注射PBS,未转染外泌体组、转染外泌体组膝关节腔内分别注射负载未过表达microRNA-140与过表达microRNA-140外泌体的海藻酸钠/胶原水凝胶。造模后第6周,检测大鼠机械刺激缩足反应阈值、滑膜液炎症因子浓度、软骨相关基因表达、膝关节软骨组织的组织学变化与焦亡相关蛋白表达。
结果与结论:①与正常对照组比较,骨关节炎组机械刺激缩足反应阈值、Ⅱ型胶原及SOX9 mRNA表达、Ⅱ型胶原免疫荧光强度均减少
(P < 0.05),滑膜液中促炎症因子水平增加(P < 0.05),基质金属蛋白酶13、血小板反应蛋白解整合素金属肽酶5(ADAMTS5)mRNA表达增加(P < 0.05),NLRP3、ASC、GSDMD p30、caspase-1 p20、白细胞介素1β、白细胞介素18蛋白表达均增加(P < 0.05),GSDMD、cleaved caspase-1免疫荧光强度增强(P < 0.05),软骨组织损伤严重。②与骨关节炎组比较,两外泌体组机械刺激缩足反应阈值、Ⅱ型胶原及SOX9 mRNA表达、Ⅱ型胶原免疫荧光强度均增加(P < 0.05),滑膜液中促炎症因子水平减少(P < 0.05),基质金属蛋白酶13 mRNA表达减少(P < 0.05),NLRP3、ASC、GSDMD p30、caspase-1 p20、白细胞介素1β、白细胞介素18的蛋白表达均减少(P < 0.05),GSDMD、cleaved caspase-1的免疫荧光强度减弱(P < 0.05),软骨组织损伤减轻(P < 0.05),并且转染外泌体组的作用更强。③结果表明,microRNA-140可通过抑制炎症、维持软骨稳态、抑制软骨焦亡来减轻骨关节炎大鼠的疼痛反应,降低软骨损伤,发挥骨关节炎治疗作用。
https://orcid.org/0009-0002-5441-9918 (陈明伟) 

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料;口腔生物材料;纳米材料;缓释材料;材料相容性;组织工程

关键词: 骨关节炎, 软骨损伤, 外泌体, microRNA-140, 海藻酸钠/胶原水凝胶, 焦亡

Abstract: BACKGROUND: Studies have confirmed that up-regulation of microRNA-140 expression can partially inhibit osteoarthritis-like changes in knee cartilage tissues and cells and delay the progression of osteoarthritis, suggesting that microRNA-140 is involved in the pathogenesis of osteoarthritis.
OBJECTIVE: To further analyze the mechanism of microRNA-140 involvement in osteoarthritis by loading exosomes overexpressing microRNA-140 with sodium alginate/collagen hydrogel.
METHODS: Lentivirus was used to infect rat bone marrow mesenchymal stem cells to overexpress microRNA-140, then exosomes were isolated and exosomes overexpressing microRNA-140 were obtained. Sodium alginate/collagen hydrogels loaded with exosomes were prepared. Thirty-two SD rats were randomly divided into four groups, with 8 rats in each group. Normal control group did not receive any treatment. The osteoarthritis model was established by injecting sodium iodoacetate into the knee cavity in the osteoarthritis group, the non-transfected exosome group and the transfected exosome group. Two weeks later, PBS was injected into the knee cavity in the osteoarthritis group. Sodium alginate/collagen hydrogel carrying non-overexpressing microRNA-140 and overexpressing microRNA-140 exosomes were injected into the knee cavity of the non-transfected exosome group and transfected exosome group. At 6 weeks after modeling, the threshold of mechanical foot withdrawal response, the concentration of inflammatory factors in synovial fluid, the expression of chondrogen-related genes, the histological changes of knee cartilage and the expression of pyroptosis related proteins were detected in rats.
RESULTS AND CONCLUSION: (1) Compared with normal control group, the threshold value of mechanical stimulation foot contraction response, type II collagen, SOX9 mRNA expression levels, and Type II collagen immunofluorescence intensity were decreased in the osteoarthritis group (P < 0.05), and proinflammatory cytokine levels were increased in synovial fluid (P < 0.05). The mRNA expressions of matrix metalloproteinase 13 and a disintegrin and metalloproteinase with thrombospondin motifs-5 (ADAMTS-5) were increased (P < 0.05), and the protein expression levels of NLRP3, ASC, GSDMD p30, caspase-1 p20, interleukin-1β, and interleukin-18 were increased (P < 0.05). Immunofluorescence intensity of GSDMD and cleaved caspase-1 was increased (P < 0.05), and cartilage tissue was severely damaged. (2) Compared with osteoarthritis group, the threshold value of mechanical stimulation foot contraction response, type II collagen, SOX9 mRNA expression levels, and type II collagen immunofluorescence intensity in the non-transfected and transfected exosome groups were increased (P < 0.05); proinflammatory cytokine levels were decreased in synovial fluid (P < 0.05). The mRNA expression of matrix metalloproteinase 13 was decreased (P < 0.05), and the protein expression levels of NLRP3, ASC, GSDMD p30, caspase-1 p20, interleukin-1β, and interleukin-18 were decreased (P < 0.05). The immunofluorescence intensity of GSDMD and cleaved caspase-1 decreased (P < 0.05), and the cartilage tissue damage was reduced (P < 0.05), and the effect was stronger in the transfected exosome group. (3) These results conclude that microRNA-140 can reduce the pain response of rats with osteoarthritis by inhibiting inflammation, maintaining cartilage homeostasis, and inhibiting cartilaginous pyroptosis, thereby reducing cartilage damage and playing a therapeutic role in osteoarthritis. 

Key words: osteoarthritis, cartilage injury, exosomes;, microRNA-140, sodium alginate/collagen hydrogel, pyroptosis

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