中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (42): 6747-6751.doi: 10.3969/j.issn.2095-4344.2014.42.005

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

透骨消痛胶囊对凋亡软骨细胞Rac1和Cdc42表达的影响

叶锦霞1,2,吴广文1,2,李西海1,2,郑春松1,2,许惠凤1,2,叶蕻芝1,2,刘献祥1,2   

  1. 1福建中医药大学,福建省福州市  350122
    2福建省中西医结合老年性疾病重点实验室,福建省福州市  350122
  • 修回日期:2014-08-28 出版日期:2014-10-08 发布日期:2014-10-08
  • 通讯作者: 刘献祥,男,教授,博士生导师,福建中医药大学,福建省福州市 350122
  • 作者简介:叶锦霞,女,1981年生,福建省漳州市人,汉族,福建中医药大学在读博士,助理研究员,主要从事中西医结合防治骨伤病研究。
  • 基金资助:

    国家自然科学基金资助项目:基于内质网应激探讨透骨消痛胶囊干预骨性关节炎软骨退变的机制(81202836)

Effects of Tougu Xiaotong Capsules on the expression of Rac1 and Cdc42 in chondrocytes

Ye Jin-xia1, 2, Wu Guang-wen1, 2, Li Xi-hai1, 2, Zheng Chun-song1, 2, Xu Hui-feng1, 2, Ye Hong-zhi1, 2, Liu Xian-xiang1, 2   

  1. 1Academy of Integrated Medicine, Fujian University of TCM, Fuzhou 350122, Fujian Province, China
    2Fujian Provincial Key Laboratory of Integrative Medicine on Geriatrics, Fuzhou 350122, Fujian Province, China
  • Revised:2014-08-28 Online:2014-10-08 Published:2014-10-08
  • Contact: Liu Xian-xiang, Professor, Doctoral supervisor, Academy of Integrated Medicine, Fujian University of TCM, Fuzhou 350122, Fujian Province, China; Fujian Provincial Key Laboratory of Integrative Medicine on Geriatrics, Fuzhou 350122, Fujian Province, China
  • About author:Ye Jin-xia, Studying for doctorate, Assistant researcher, Academy of Integrated Medicine, Fujian University of TCM, Fuzhou 350122, Fujian Province, China; Fujian Provincial Key Laboratory of Integrative Medicine on Geriatrics, Fuzhou 350122, Fujian Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81202836

摘要:

背景:透骨消痛胶囊治疗早、中期骨性关节炎有较好疗效,但作用机制尚未完全阐明。小GTP酶Rho能够抑制软骨细胞肥大分化,促进软骨细胞的凋亡。
目的:观察透骨消痛胶囊对体外培养凋亡大鼠关节软骨细胞Rac1和Cdc42的影响,并初步探讨其防治骨性关节炎的作用机制。
方法:采用4周龄SD大鼠膝关节软骨建立稳定的软骨细胞体外培养体系,采用甲苯胺蓝染色法对第3代软骨细胞进行鉴定。用20 μg/L的肿瘤坏死因子α诱导体外培养软骨细胞的凋亡,诱导成功后,给予透骨消痛胶囊(500,100,20 mg/L)孵育24 h后,分别用MTT法检测各组软骨细胞的存活率,用流式细胞仪检测各组软骨细胞的线粒体膜电位情况,Western Blot检测各组软骨细胞Rac1,Cdc42,Bcl-2及Bax蛋白表达。
结果与结论:透骨消痛胶囊能够减少肿瘤坏死因子α所致的软骨细胞凋亡,提高线粒体膜电位,提高细胞的存活率,同时能够下调Rac1,Cdc42,Bax蛋白的表达,上调Bcl-2蛋白表达,差异均有显著性意义(P < 0.05)。提示透骨消痛胶囊可能通过下调Rac1,Cdc42和 Bax蛋白表达,增加凋亡抑制基因Bcl-2蛋白表达,从而抑制软骨细胞的凋亡,而起到治疗骨性关节炎的疗效。



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


全文链接:

关键词: 组织构建, 软骨细胞, 透骨消痛胶囊, 中药, 凋亡, Rac1蛋白, Cdc42蛋白, 国家自然科学基金

Abstract:

BACKGROUND: Tougu Xiaotong Capsule has pretty good clinical therapeutic effect on osteoarthritis of early and middle periods. However, the mechanism of Tougu Xiaotong Capsule is not fully clarified. The RhoA GTPases can regulate chondrocyte apoptosis and hypertrophy. 
OBJECTIVE: To observe the Tougu Xiaotong Capsule on the expression of Rac1and Cdc42 in tumor necrosis factor-α-induced in vitro cultured rat articular chondrocytes, and to explore its mechanism of action for combating osteoarthritis.
METHODS: Knee cartilage of the 4-week-old Sprague-Dawley rats was used to stably establish in vitro culture system of chondrocytes. Passage 3 chondrocytes were identified by toluidine blue staining. Chondrocyte apoptosis was successfully induced by 20 μg/L tumor necrosis factor-α and then Tougu Xiaotong Capsule at different dosage (500, 100, 20 mg/L) was given after 24-hour incubation. MTT assay was used to detect cell survival, flow cytrometry to measure mitochondrial membrane potential, and western blot assay to determine the protein expression of Rac1, Cdc42, Bax and Bcl-2.
RESULTS AND CONCLUSION: Tougu Xiaotong Capsule could reduce tumor necrosis factor-α-induced apoptosis of chondrocytes to improve the survival rate of the cells, and at the same time, could down-regulate the protein expression of Rac1, Cdc42 and Bax and increase the protein expression of Bcl-2 significantly (P < 0.05). Tougu Xiaotong Capsule possibly plays a therapeutic efficacy on osteoarthritis by reducing promote apoptosis Rac1, Cdc42 and Bax expression and increasing apoptosis inhibiting gene Bcl-2 expression, thereby to inhibit apoptosis of chondrocytes.



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


全文链接:

Key words: chondrocytes, apoptosis, drugs, Chinese HERBAL, rac1 GTP-binding protein, cdc42 GTP-binding protein

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