中国组织工程研究 ›› 2023, Vol. 27 ›› Issue (32): 5137-5143.doi: 10.12307/2023.577

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

黄芪桂枝五物汤减弱椎间盘终板软骨细胞线粒体损伤和氧化应激

董佳安1,刘汝银2,岳宗进2,徐向阳2,王政臻1   

  1. 1河南中医药大学骨伤学院,河南省郑州市  450000;2河南省中医院/河南中医药大学第二附属医院脊柱科,河南省郑州市  450000
  • 出版日期:2023-11-18 发布日期:2023-03-23
  • 通讯作者: 刘汝银,硕士,主任中医师,河南省中医院/河南中医药大学第二附属医院脊柱科,河南省郑州市 450000
  • 作者简介:董佳安,男,1996年生,河南中医药大学在读硕士,主要从事中医药防治脊柱和脊柱相关疾病临床研究。
  • 基金资助:
    2022年河南省中医药科学研究专项基金项目(2022ZY1092),项目负责人:刘汝银

Huangqi Guizhi Wuwu Decoction attenuates mitochondrial damage and oxidative stress in intervertebral disc endplate chondrocytes

Dong Jiaan1, Liu Ruyin2, Yue Zongjin2, Xu Xiangyang2, Wang Zhengzhen1   

  1. 1College of Orthopedics and Traumatology, Henan University of Chinese Medicine, Zhengzhou 450000, Henan Province, China; 2Department of Spine, Henan Provincial Hospital of Traditional Chinese Medicine, Second Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou 450000, Henan Province, China
  • Online:2023-11-18 Published:2023-03-23
  • Contact: Liu Ruyin, Master, Chief physician, Department of Spine, Henan Provincial Hospital of Traditional Chinese Medicine, Second Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou 450000, Henan Province, China
  • About author:Dong Jiaan, Master candidate, College of Orthopedics and Traumatology, Henan University of Chinese Medicine, Zhengzhou 450000, Henan Province, China
  • Supported by:
    the Special Fund of Traditional Chinese Medicine Research of Henan Province in 2022, No. 2022ZY1092 (to LRY)

摘要:


文题释义:
椎间盘退变:下腰痛是全球范围内导致人类活动受限和生产力丧失的重要因素,而椎间盘退变被广泛认为是引起下腰痛的主要原因。终板软骨细胞氧化应激和线粒体损伤是终板软骨退变的重要机制,在椎间盘退变的发生和发展过程中起着重要作用。
线粒体自噬:作为一种选择性的自噬,可以清除细胞中受损或者是多余的线粒体,涉及到包括椎间盘退变在内的多种生理和病理学过程。然而需要注意的是,线粒体自噬作为一把“双刃剑”,在某些条件下也会加剧细胞的氧化应激水平和线粒体损伤。

背景:黄芪桂枝五物汤对椎间盘退行性疾病有一定的保护作用。线粒体自噬在调控细胞线粒体损伤和氧化应激中发挥着重要的作用,但黄芪桂枝五物汤对椎间盘终板软骨细胞线粒体自噬的影响仍不明确。
目的:探讨黄芪桂枝五物汤对过氧化氢诱导椎间盘终板软骨细胞损伤的影响及其可能的分子作用机制。
方法:提取大鼠椎间盘终板软骨细胞,将细胞分为5组,其中黄芪桂枝五物汤低、中、高剂量组分别用6.25,12.5,25 mg/mL黄芪桂枝五物汤培养液培养细胞24 h,而正常组和模型组不添加药物。之后除正常组外,模型组和黄芪桂枝五物汤各剂量组中添加400 μmol/L的H2O2继续处理细胞2 h。采用CCK-8法检测细胞增殖情况;比色法检测乳酸脱氢酶、ATP、超氧化物歧化酶、过氧化氢酶、丙二醛水平;免疫荧光法检测细胞线粒体膜电位变化;流式细胞术检测活性氧和细胞凋亡率;细胞免疫荧光双染检测细胞线粒体自噬的情况;采用siRNA进行细胞转染,蛋白免疫印迹法检测帕金森病相关基因(Parkinson-related genes,Parkin)、LC3Ⅱ和p62蛋白表达的情况;细胞转染Parkin腺病毒过表达载体,检测细胞存活率。
结果与结论:①与模型组比较,黄芪桂枝五物汤处理显著提高了软骨细胞存活率,升高软骨细胞内ATP、超氧化物歧化酶、过氧化氢酶和线粒体膜电位水平,有效降低细胞的凋亡率(P < 0.05,P < 0.01);②黄芪桂枝五物汤处理后,软骨细胞中乳酸脱氢酶活性、活性氧和丙二醛水平较模型组显著降低(P < 0.01);③Parkin siRNA显著降低了过氧化氢诱导的细胞线粒体自噬(P < 0.01),细胞存活率和ATP水平明显升高(P < 0.01),细胞中的活性氧水平、丙二醛含量和凋亡率均明显降低(P < 0.01);④与模型组相比,黄芪五物桂枝汤处理能够减弱过氧化氢引起的Parkin和LC3Ⅱ蛋白水平升高(P < 0.05,P < 0.01);而黄芪桂枝五物汤处理组中的p62蛋白水平显著高于模型组(P < 0.01); ⑤过表达Parkin减弱了高剂量黄芪桂枝五物汤对H2O2处理细胞存活率的保护作用;⑥提示黄芪桂枝五物汤能有效抑制过氧化氢诱导的椎间盘终板软骨细胞线粒体损伤和氧化应激,其保护机制可能与减弱Parkin调节的线粒体自噬有关。
https://orcid.org/0000-0002-9979-0668(董佳安)

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 黄芪桂枝五物汤, 椎间盘, 线粒体损伤, 氧化应激, Parkin

Abstract: BACKGROUND: Huangqi Guizhi Wuwu Decoction has a certain protective effect on intervertebral disc degenerative diseases. Mitophagy plays an important role in regulating mitochondrial damage and oxidative stress. However, the effect of Huangqi Guizhi Wuwu Decoction on mitophagy in chondrocytes of intervertebral disc endplate is still unclear. 
OBJECTIVE: To investigate the effect of Huangqi Guizhi Wuwu Decoction on hydrogen peroxide-induced injury of intervertebral disc endplate chondrocytes and its possible molecular mechanism. 
METHODS: Chondrocytes were obtained from the intervertebral disc endplate of rats and divided into five groups. Cells in low-, medium-, and high-dose groups were treated with 6.25, 12.5, and 25 mg/mL Huangqi Guizhi Wuwu Decoction for 24 hours, respectively. Cells in normal and models groups were cultured with no treatment. Except for the normal group, the cells in the model group and Huangqi Guizhi Wuwu Decoction groups were treated with 400 μmol/L H2O2 for 2 hours. Cell proliferation was then detected by cell counting kit-8 assay. Lactate dehydrogenase, adenosine triphosphate, superoxide dismutase, catalase and malondialdehyde levels were detected by colorimetric assay. The changes in mitochondrial membrane potential were detected by immunofluorescence. Reactive oxygen species and apoptosis were detected by flow cytometry. Mitophagy was detected by immunofluorescence double staining. Cells were transfected with siRNA, and the protein expressions of Parkinson-related gene (Parkin), LC3 and p62 were detected by western blot. Cells were transfected with Parkin adenovirus overexpression vector, and the survival rate of cells was detected. 
RESULTS AND CONCLUSION: Compared with the model group, Huangqi Guizhi Wuwu Decoction treatment significantly improved the survival rate of chondrocytes, increased the levels of adenosine triphosphate, superoxide dismutase, catalase and mitochondrial membrane potential in chondrocytes, and effectively attenuated the apoptotic rate of chondrocytes (P < 0.05, P < 0.01). After treatment with Huangqi Guizhi Wuwu Decoction, the activity of lactate dehydrogenase and the levels of reactive oxygen species and malondialdehyde in chondrocytes were significantly decreased compared with those in the model group (P < 0.01). Parkin siRNA significantly decreased mitophagy induced by hydrogen peroxide (P < 0.01), increased cell survival rate and adenosine triphosphate level (P < 0.01), and decreased reactive oxygen species level, malondialdehyde level and apoptosis rate (P < 0.01). Compared with the model group, the treatment with Huangqi Guizhi Wuwu Decoction could attenuate the increase of Parkin and LC3 II protein levels caused by hydrogen peroxide (P < 0.05, P < 0.01), while the protein level of p62 in the Huangqi Guizhi Wuwu Decoction treatment groups was significantly increased compared with the model group (P < 0.01). On the contrary, overexpression of Parkin attenuated the protective effect of Huangqi Guizhi Wuwu Decoction on the survival rate of cells treated with hydrogen peroxide. To conclude, Huangqi Guizhi Wuwu Decoction can effectively inhibit hydrogen peroxide-induced mitochondrial damage and oxidative stress in intervertebral disc endplate chondrocytes, and its protective mechanism may be related to attenuating Parkin-regulated mitophagy.

Key words: Huangqi Guizhi Wuwu Decoction, intervertebral disc, mitochondrial damage, oxidative stress, Parkin

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