中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (15): 2163-2170.doi: 10.3969/j.issn.2095-4344.2016.15.005

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

姜黄素抑制大鼠创伤性骨关节炎模型中软骨细胞核因子κB P65核转位的实验研究

王 健,马 捷,顾剑华,王富勇,尚修帅,王兆飞,王 祥,陶海荣   

  1. 上海交通大学医学院附属第九人民医院,上海市 201900
  • 收稿日期:2016-02-04 出版日期:2016-04-08 发布日期:2016-04-08
  • 通讯作者: 陶海荣,博士,副主任医师,硕士生导师,上海交通大学医学院附属第九人民医院骨科,上海市 201900 王祥,博士,副主任医师,上海交通大学医学院附属第九人民医院骨科,上海市 201900
  • 作者简介:王健,男,1990年生,安徽省安庆市人,汉族,上海交通大学医学院在读硕士,主要从事骨关节炎的基础研究。
  • 基金资助:

    上海市宝山区科学技术发展基金项目(13-E-5);上海交通大学“医工交叉”合作基金(YG2014MS23)

Curcumin inhibits nuclear translocation of nuclear factor-kappa B P65 in a rat model of traumatic osteoarthritis

Wang Jian, Ma Jie, Gu Jian-hua, Wang Fu-yong, Shang Xiu-shuai, Wang Zhao-fei, Wang Xiang, Tao Hai-rong   

  1. Department of Orthopedics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, China
  • Received:2016-02-04 Online:2016-04-08 Published:2016-04-08
  • Contact: Tao Hai-rong, M.D., Master’s supervisor, Associate chief physician, Department of Orthopedics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, China; Wang Xiang, M.D., Associate chief physician, Department of Orthopedics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, China
  • About author:Wang Jian, Studying for master’s degree, Department of Orthopedics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201900, China
  • Supported by:

    the Science and Technology of Development Program of Baoshan District, Shanghai, China, No, 13-E-5; the Medical-Engineering Cross Foundation of Shanghai Jiao Tong University, China, No. YG2014MS23

摘要:

文章快速阅读:

 

文题释义:
姜黄素:是从姜科、天南星科中的一些植物根茎中提取的一种化学成分,分子式为C21H20O6,为二酮类化合物。
核因子κBp65的核转位:核因子κB是一种在细胞浆中广泛表达的转录因子,p65-p50二聚体是其主要的存在形式。当细胞处于静息状态时,核因子κB通过与抑制性蛋白IκBα结合,从而以无活性的形式存在于细胞质中。在多种外界因素刺激下,其活性可以被多种因子激活,这些因子产生的第2信使信号导致IκBα的磷酸化和泛素化,继而被降解,核因子κB 脱离了IκBα的阻滞,可转位至细胞核,p65的核转位是核因子κB信号转导通路活化的重要标志。


 

背景:骨关节炎软骨细胞的退化是由于一系列的机械因素、炎性递质、生化因素,尤其是基质金属蛋白酶和活性氧等共同作用导致的。姜黄素在体外已被证明是一种有效地活性氧清除剂和活性氮提供剂,但保护关节软骨抑制骨关节炎作用和机制尚不明确。
目的:分析姜黄素防止骨关节炎中软骨损伤的作用机制。
方法:SD大鼠 30 只随机分为假手术组15只和模型组15只。模型组建立大鼠创伤性骨关节炎模型(阳性对照组),分离软骨细胞进行体外培养,使用姜黄素(姜黄素组)和特异性的核因子κB抑制剂(PDTC组)共培养软骨细胞 24 h,Western Blotting和免疫荧光检测核因子κB P65核内外表达情况。RT-qPCR 检测细胞Ⅱ型胶原、基质金属蛋白酶1、基质金属蛋白酶13的表达。
结果与结论:Western Blotting检测显示阳性对照组P65主要在细胞核中表达,细胞浆中表达较少;姜黄素组P65主要在细胞浆中表达,细胞核中表达较少。免疫荧光观察阳性对照组核因子κB 均有不同程度的核转位,核转位细胞的核因子κB P65荧光标记主要浓集于核区;阴性对照组、姜黄素组和PDTC组核转位细胞的核因子κB P65荧光标记主要浓集于胞质区。实时荧光定量RT-qPCR检测显示姜黄素组基质金属蛋白酶1、基质金属蛋白酶13的表达显著低于阳性对照组,而Ⅱ型胶原的表达显著高于阳性对照组。结果说明,姜黄素能够通过抑制骨关节炎模型中软骨细胞核因子κB信号通路活化,抑制核因子κB P65核转位,抑制软骨细胞释放基质金属蛋白酶1、基质金属蛋白酶13的表达,增加Ⅱ型胶原的含量,保护软骨细胞,延缓软骨退变。
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
ORCID:0000-0002-4264-8337(王健)

关键词: 组织构建, 软骨组织工程, 姜黄素, 骨关节炎, NF-κB, 基质金属蛋白酶, Ⅱ型胶原

Abstract:

BACKGROUND: Mechanical, inflammatory, and biochemical factors, particularly matrix metalloproteinases and reactive oxygen lead to chondrocyte degeneration in osteoarthritis. Curcumin has been shown to be a potent antioxidant; however, its protective effects against chondrocyte degeneration in osteoarthritis remain unclear.
OBJECTIVE: To investigate the potential molecular mechanisms underlying the protective effects of curcumin on articular cartilage of osteoarthritis in rats.
METHODS: A total of 30 Sprague-Dawley rats were used and randomly divided into model group (positive control, n=15) and normal group (negative control, n=15). Rat models of traumatic osteoarthritis were established, and then cartilage cells were isolated from articular cartilage and cultured in vitro. Chondrocytes were treated with curcumin (curcumin group) or PDTC (an inhibitor of nuclear factor-kappa B) for 24 hours. The expression level of nuclear factor-kappa B P65 in nucleus and cytoplasm in chondrocytes were determined by western blot assay and immunofluorescence. Moreover, mRNA expressions of type II collagen, matrix metalloproteinase-1 and -13 were analyzed using RT-qPCR.
RESULTS AND CONCLUSION: Nuclear factor-kappa B P65 protein was mainly expressed in nucleus, but few in cytoplasm in positive control group; the reversed results were found in the curcumin group. Nuclear translocation of nuclear factor-kappa B P65 was observed mainly in nucleus in the positive control group; however, that was observed mainly in cytoplasm in the negative control, curcumin, and PDTC groups. Matrix metalloproteinase-1 and -13 mRNA expressions were significantly decreased, while type II collagen mRNA expression was significantly increased in the curcumin group compared with the positive control group. These findings indicated that curcumin protect chondrocytes against degeneration through inhibiting the activation of nuclear factor-kappa B signaling pathway, suppressing nuclear translocation of nuclear factor-kappa B P65 and inhibiting the expressions of matrix metalloproteinase-1 and -13, which are responsible for upregulation of type II collagen expression.
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

Key words: Curcumin, Osteoarthritis, NF-kappa B, Matrix Metalloproteinases, Collagen Type II, Tissue Engineering