中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (20): 3178-3183.doi: 10.12307/2022.617

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

补肾调肝方含药血清促进大鼠软骨细胞自噬治疗关节炎

范  帅1,吴春飞1,梁祖建1,徐兆辉2,谢平金2,朱根福1   

  1. 1广州中医药大学第三附属医院,广东省广州市 510240;2深圳市罗湖区中医院,广东省深圳市 518000
  • 收稿日期:2021-09-22 接受日期:2021-11-11 出版日期:2022-07-18 发布日期:2022-01-18
  • 通讯作者: 朱根福,博士,副主任中医师,广州中医药大学第三附属医院,广东省广州市 510240
  • 作者简介:范帅,男,1987年生,河北省石家庄市人,汉族,2017年广州中医药大学毕业,硕士,主治医师,主要从事中医药防治骨伤科疾病研究。
  • 基金资助:
    广东省自然科学基金项目(2021A1515011469),项目负责人:梁祖建;广东省中医药局科研项目(20201171),项目负责人:范帅;广东省中医药局科研项目(20211211),项目负责人:吴春飞;广州中医药大学第三附属医院科研创新基金项目(sy201701,sy2018007),项目负责人:范帅;2020年深圳市科技创新委员会基础研究面上项目(JCYJ20190812170815559),项目参与人:谢平金

Bushen Tiaogan Prescription containing serum in the treatment of osteoarthritis by promoting chondrocyte autophagy in rats

Fan Shuai1, Wu Chunfei1, Liang Zujian1, Xu Zhaohui2, Xie Pingjin2, Zhu Genfu1   

  1. 1Third Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510240, Guangdong Province, China; 2Luohu District Hospital of Traditional Chinese Medicine, Shenzhen 518000, Guangdong Province, China
  • Received:2021-09-22 Accepted:2021-11-11 Online:2022-07-18 Published:2022-01-18
  • Contact: Zhu Genfu, MD, Associate chief physician, Third Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510240 Guangdong Province, China
  • About author:Fan Shuai, Master, Attending physician, Third Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510240 Guangdong Province, China
  • Supported by:
    Guangdong Provincial Natural Science Foundation, No. 2021A1515011469 (to LZJ); Guangdong Provincial Bureau of Traditional Chinese Medicine Research Projects, Nos. 20201171 (to FS) and 20211211 (to WCF); Research and Innovation Projects of the Third Affiliated Hospital of Guangzhou University of Chinese Medicine, Nos. sy201701 and sy2018007 (both to FS); 2020 Basic Research Project of Shenzhen Science and Technology Innovation Committee, No. JCYJ20190812170815559 (to XPJ [project participant])

摘要:

文题释义:
骨关节炎:是一种临床常见的慢性退行性骨关节疾病,多以疼痛为主要表现,最终可导致关节畸形及功能障碍。其主要病理改变是软骨退化、滑膜炎和关节周围硬化包括骨赘形成和软骨下骨硬化。
自噬:又称Ⅱ型程序性细胞死亡,是一种高度保守的降解系统,在调节机体能量和营养、维持机体能量代谢中起着至关重要的作用。许多研究表明自噬是多种组织细胞使用的一种抗凋亡细胞保护机制。大量证据表明,自噬参与骨关节炎的病理进展,自噬的增强可以保护关节软骨,延缓骨关节炎的进展。

背景:前期研究发现,补肾调肝方治疗骨关节炎有明显临床疗效,但缺乏对其作用机制的研究。
目的:观察补肾调肝方含药血清对大鼠软骨细胞自噬的影响,并探讨其内在机制。
方法:传代培养的第3代大鼠软骨细胞随机分为4组:二甲基亚砜组、10 μg/L白细胞介素1β组、10 μg/L白细胞介素1β+10%补肾调肝方含药血清组和雷帕霉素5 μmol/L组,分别处理软骨细胞24 h。单丹磺酰尸胺染色法检测软骨细胞自噬小体表达;实时荧光定量PCR检测自噬相关基因ATG5、ATG7 mRNA的表达;Western blot检测Beclin1、LC3A/B和磷酸化蛋白激酶B (p-AKT)、磷酸化哺乳动物雷帕霉素靶蛋白(p-mTOR)的蛋白表达水平。
结果与结论:①与二甲基亚砜组比较,10 μg/L白细胞介素1β组中细胞的自噬小体数量明显减少;雷帕霉素处理后的软骨细胞与二甲基亚砜组相比,自噬小体的数量明显增多;与10 μg/L白细胞介素1β组相比,10 μg/L白细胞介素1β+10%补肾调肝方含药血清组的自噬小体明显增多;②实时荧光定量PCR及Western blot结果显示,与二甲基亚砜组比较,10 μg/L白细胞介素1β组中软骨细胞自噬相关基因ATG5、ATG7 mRNA及Beclin1和LC3A/B-Ⅱ/LC3A/B-Ⅰ蛋白表达水平均明显下降(P < 0.05,P < 0.01,P < 0.01,P < 0.05),而p-AKT和p-mTOR蛋白表达水平明显上升(P < 0.05,P < 0.05);与二甲基亚砜组相比,雷帕霉素处理后的软骨细胞中ATG5、ATG7 mRNA及Beclin1和LC3A/B-Ⅱ/LC3A/B-Ⅰ蛋白表达水平均明显上升(P < 0.01,P < 0.05,P < 0.05,P < 0.05),而p-AKT和p-mTOR蛋白表达水平明显下降(P < 0.01,P < 0.01);与10 μg/L白细胞介素1β组相比,10 μg/L白细胞介素1β+10%补肾调肝方含药血清组中软骨细胞自噬相关基因ATG5、ATG7 mRNA及Beclin1和LC3A/B-Ⅱ/LC3A/B-Ⅰ的蛋白表达水平均明显上升(P < 0.01,P < 0.01,P < 0.05,P < 0.01),而p-AKT和p-mTOR蛋白表达水平明显下降(P < 0.05,P < 0.05);③提示补肾调肝方含药血清可能通过抑制软骨细胞内AKT/mTOR信号通路增加软骨细胞的自噬能力,延缓关节软骨退变,起到治疗骨关节炎的作用。
缩略语:蛋白激酶B:protein kinase B,PKB/AKT;哺乳动物雷帕霉素靶蛋白:mammalian target of rapamycin,mTOR

https://orcid.org/0000-0001-9864-6771 (范帅)

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: 自噬, 骨关节炎, 补肾调肝方, 关节软骨, AKT/mTOR

Abstract: BACKGROUND: Previous studies have found that Bushen Tiaogan Prescription has obvious clinical efficacy in the treatment of osteoarthritis, but there is a lack of research on its mechanism.
OBJECTIVE: To study the effect of Bushen Tiaogan Prescription containing serum on the autophagy of rat chondrocytes, and to explore its internal mechanism. 
METHODS: The third-generation rat chondrocytes subcultured were randomly divided into four groups: dimethyl sulfoxide (DMSO), 10 μg/L interleukin-1β (IL-1β), 10 μg/L IL-1β+10% Bushen Tiaogan Prescription medicated serum (BSTG), and 5 μmol/L rapamycin groups, and chondrocytes in each group were treated correspondingly for 24 hours. Dansylcadaverine staining was used to detect the expression of chondrocyte autophagosomes. Real-time fluorescence quantitative PCR was used to detect the expression of autophagy-related genes ATG5 and ATG7 mRNAs, and the expression levels of Beclin1, LC3A/B, phosphorylated protein kinase B (p-AKT), and phosphorylated mammalian target of rapamycin (p-mTOR) proteins were analyzed by western blot assay. 
RESULTS AND CONCLUSION: Compared with the DMSO group, the number of autophagosomes was significantly reduced in the IL-1β group. Compared with the DMSO group, the number of autophagosomes was significantly increased in the rapamycin group. Compared with the IL-1β group, the number autophagosomes was significantly increased in the 10 μg/L IL-1β+10% BSTG group. Compared with the DMSO group, the mRNA expressions of chondrocyte autophagy-related genes ATG5, ATG7 and the protein expressions of Beclin1 and LC3A/B-II/LC3A/B-I protein expression were significantly decreased in the IL-1β 
group (P < 0.05, P < 0.01, P < 0.01, P < 0.05), while the protein expressions of p-AKT and p-mTOR were significantly increased (P < 0.05, P < 0.05). Compared with the DMSO group, the mRNA expressions of ATG5 and ATG7 and the protein expressions of Beclin1 and LC3A/B-II/LC3A/B-I were significantly increased in the rapamycin group (P < 0.01, P < 0.05, P < 0.05, P < 0.05), while the protein expressions of p-AKT and p-mTOR were significantly decreased (P < 0.01, P < 0.01). Compared with the IL-1β group, the mRNA expressions of ATG5 and ATG7 the protein expressions of Beclin1 and LC3A/B-II/LC3A/B-I were significantly increased in the 10 μg/L IL-1β+10% BSTG group (P < 0.01, P < 0.01, P < 0.05, P < 0.01), while the protein expressions of p-AKT and p-mTOR were significantly decreased (P < 0.05, P < 0.05). To conclude, Bushen Tiaogan Prescription containing serum increases the autophagy ability of chondrocytes by inhibiting the AKT/mTOR signaling pathway in chondrocytes and alleviating the degeneration of articular cartilage, and thereby plays a role in the treatment of osteoarthritis.

Key words: autophagy, osteoarthritis, Bushen Tiaogan Prescription, articular cartilage, AKT/mTOR

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