中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (6): 1183-1191.doi: 10.12307/2025.269

• 软骨组织构建 cartilage tissue construction • 上一篇    下一篇

Hemin调控小鼠软骨细胞氧化应激的线粒体途径

贺光辉1,原  杰1,柯燕琴1,丘小婷1,张晓玲1,2   

  1. 1山西医科大学第二医院骨科,山西省太原市  030001;2上海交通大学医学院附属新华医院骨科,上海市  200092


  • 收稿日期:2024-01-25 接受日期:2024-03-07 出版日期:2025-02-28 发布日期:2024-06-21
  • 通讯作者: 张晓玲,博士,教授,山西医科大学第二医院骨科,山西省太原市 030001;上海交通大学医学院附属新华医院骨科,上海市 200092
  • 作者简介:贺光辉,男,1997年生,湖南省衡阳市人,山西医科大学在读硕士,主要从事干细胞与骨关节炎防治的研究。
  • 基金资助:
    山西省重点研发项目(201903D321097),项目负责人:张晓玲

Hemin regulates mitochondrial pathway of oxidative stress in mouse chondrocytes

He Guanghui1, Yuan Jie1, Ke Yanqin1, Qiu Xiaoting1, Zhang Xiaoling1, 2   

  1. 1Department of Orthopedics, The Second Hospital of Shanxi Medical University, Taiyuan 030001, Shanxi Province, China; 2Department of Orthopedics, Xinhua Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200092, China
  • Received:2024-01-25 Accepted:2024-03-07 Online:2025-02-28 Published:2024-06-21
  • Contact: Zhang Xiaoling, MD, Professor, Department of Orthopedics, The Second Hospital of Shanxi Medical University, Taiyuan 030001, Shanxi Province, China; Department of Orthopedics, Xinhua Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200092, China
  • About author:He Guanghui, Master candidate, Department of Orthopedics, The Second Hospital of Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
  • Supported by:
    Key Research and Development Project of Shanxi Province, No. 201903D321097 (to ZXL)

摘要:




文题释义:
Hemin:是一种富含铁的卟啉化合物,同时也是血红素加氧酶(HO-1)的诱导剂。它具备多种功效,包括细胞保护、抗氧化、免疫调节、促血管生成和抗炎等多种作用。Hemin已成功应用于临床,成为治疗急性卟啉病的重要药物。
氧化应激:是指细胞内产生过多的氧化物质(如自由基),导致细胞内的氧化还原平衡被破坏,从而引发一系列不利的生物学效应。这些氧化物质可以损害细胞的脂质、蛋白质和DNA,进而导致细胞损伤、凋亡和炎症,参与多种疾病的发生和发展。

背景:研究显示线粒体氧化应激在膝骨关节炎发生发展中具有重要作用,Hemin可以调控线粒体相关蛋白的表达。
目的:研究Hemin对小鼠软骨细胞氧化应激的调控及其在膝骨关节炎中的干预作用及机制。
方法:①体外细胞实验:提取C57BL/6小鼠的原代软骨细胞,采用10 ng/mL的白细胞介素1β诱导构建体外骨关节炎软骨细胞模型,使用CCK-8法确定Hemin(0,1,10,20,40,80,160 μmol/L)干预小鼠软骨细胞的最适浓度。将软骨细胞随机分为正常组、模型组(白细胞介素1β)、Hemin组(白细胞介素1β+Hemin)。检测各组软骨细胞的活性氧、线粒体膜电位和凋亡情况。②动物体内实验:将成年C57BL/6小鼠随机分为正常组、模型组(骨关节炎),Hemin(骨关节炎+Hemin)组,每组8只,Hemin治疗4周后观察小动物行为学及膝关节病理组织形态学变化,检测软骨组织细胞外基质相关蛋白表达及软骨组织细胞凋亡的变化,检测软骨组织Nrf2/HO-1蛋白的表达水平。
结果与结论:①体外细胞实验:Hemin作用于原代软骨细胞的最适浓度为40 μmol/L,经过Hemin处理的白细胞介素1β诱导的软骨细胞相对于模型组活性氧水平明显较少,线粒体膜电位明显有改善,软骨细胞凋亡减少。②动物体内实验:Hemin治疗4周后,与模型组比较,Hemin组的小鼠下肢功能明显转好,组织病理学评分显著改善,膝关节软骨细胞凋亡明显减少。③结果表明,Hemin可以缓解白细胞介素1β诱导下的小鼠软骨细胞氧化应激,恢复线粒体功能,减少细胞凋亡。Hemin可以改善膝骨关节炎细胞外基质降解、促进软骨细胞合成代谢、降低分解代谢及减少软骨细胞凋亡,可能是通过激活炎症环境中软骨细胞Nrf2/HO-1信号通路发挥的作用。
https://orcid.org/0000-0003-1948-1628(贺光辉);https://orcid.org/0000-0002-0134-1347(张晓玲)

关键词: 膝骨关节炎, Hemin, 氧化应激, 线粒体, 细胞凋亡, 软骨损伤

Abstract:
BACKGROUND:
Studies have shown that mitochondrial oxidative stress has an important role in the development of knee osteoarthritis, and Hemin can regulate the expression of mitochondria-related proteins.
Objective: To study the regulatory effect of Hemin on oxidative stress in mouse chondrocytes and its interventional effect and mechanism in knee osteoarthritis.
METHODS: (1) In vitro cell experiment: Primary chondrocytes from C57BL/6 mice were extracted and induced with 10 ng/mL interleukin-1β to construct an in vitro chondrocyte model of osteoarthritis. The optimal concentration of Hemin (0, 1, 10, 20, 40, 80, and 160 μmol/L) for the intervention in mouse chondrocytes was determined by cell counting kit-8 method. Chondrocytes were randomly divided into control group, model group (interleukin-1β) and Hemin group (interleukin-1β+Hemin). Reactive oxygen species, mitochondrial membrane potential and apoptosis of chondrocytes in each group were detected. (2) In vivo experiment: Adult C57BL/6 mice were randomly divided into normal group, model group (osteoarthritis) and Hemin group (osteoarthritis+Hemin), with eight mice in each group. After 4 weeks of Hemin treatment, the behavioral test and histopathological observation of the knee joint were performed in each group. Changes in extracellular matrix-related protein expression and apoptosis in chondrocytes and the expression level of Nrf2/HO-1 protein in cartilage tissue were detected.
RESULTS AND CONCLUSION: In vitro experiment: the optimal concentration of Hemin on primary chondrocytes was 40 μmol/L. Compared with the model group, the level of reactive oxygen species was significantly reduced, the mitochondrial membrane potential was significantly improved, and the apoptosis of chondrocytes was reduced in the hemin-treated interleukin-1β-induced chondrocytes. In vivo experiment: After 4 weeks of treatment, compared with the model group, the lower limb function of mice in the Hemin group was significantly improved, the histopathological score was significantly improved, and the apoptosis of knee chondrocytes was significantly reduced. All these findings indicate that Hemin can alleviate oxidative stress, restore mitochondrial function and reduce apoptosis in mouse chondrocytes induced by interleukin-1β. Hemin can improve extracellular matrix degradation, promote chondrocyte anabolism, reduce catabolism and reduce chondrocyte apoptosis in knee osteoarthritis. It may act by activating the chondrocyte Nrf2/HO-1 signaling pathway in the inflammatory environment.

Key words: knee osteoarthritis, Hemin, oxidative stress, mitochondria, apoptosis, cartilage injury

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