中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (51): 8218-8222.doi: 10.3969/j.issn.2095-4344.2015.51.004

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

Nrf2介导姜黄素对软骨细胞氧化应激损伤的保护作用

宋永周1,关 健2,李 明1,马 维1,袁 鹤1,王 斌1,童九辉1   

  1. 1河北医科大学第二医院骨科,河北省石家庄市   0500002石家庄市第三医院关节外科,河北省石家庄市   050011
  • 收稿日期:2015-11-09 出版日期:2015-12-10 发布日期:2015-12-10
  • 通讯作者: 马维,博士,教授,河北医科大学第二医院骨科,河北省石家庄市 050000
  • 作者简介:宋永周,男,1973年生,河北省深泽县人,汉族,2009年河北医科大学毕业,博士,副教授,主要从事骨关节退行性疾病的研究。
  • 基金资助:

    河北省医学科学研究重点课题(20150666)

Nrf2-mediated curcumin protects chondrocytes from oxidative stress

Song Yong-zhou1, Guan Jian2, Li Ming1, Ma Wei1, Yuan He1, Wang Bin1, Tong Jiu-hui1   

  1. 1Department of Orthopedics, Second Affiliated Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei Province, China; 2Department of Joint Surgery, Third Hospital of Shijiazhuang, Shijiazhuang 050011, Hebei Province, China
  • Received:2015-11-09 Online:2015-12-10 Published:2015-12-10
  • Contact: Ma Wei, M.D., Professor, Department of Orthopedics, Second Affiliated Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei Province, China
  • About author:Song Yong-zhou, M.D., Associate professor, Department of Orthopedics, Second Affiliated Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei Province, China
  • Supported by:

    the Medical Scientific Research of Hebei Province, No. 20150666

摘要:

背景:研究表明氧化应激在骨关节炎的发生发展中起重要作用,姜黄素具有抗氧化、清除自由基作用。
目的:通过建立H2O2诱导软骨细胞损伤模型,观察姜黄素对软骨细胞的保护作用。
方法:体外培养SD大鼠关节软骨细胞,随机分为正常组、模型组(H2O2)、姜黄素低、中、高剂量剂量组(20,40,80 μmol/L)。姜黄素与软骨细胞培养48 h后,加入H2O2,24 h后收集细胞,MTT法测定细胞存活率,测定细胞超氧化物歧化酶、丙二醛、过氧化氢酶含量,Real-Time PCR和Western blot法检测细胞Nrf2 mRNA及其蛋白表达水平,荧光显微镜观察细胞核形态变化。
结果与结论:与正常组比较,模型组软骨细胞存活率降低,超氧化物歧化酶、过氧化氢酶含量降低,丙二醛含量增加,Nrf2 mRNA及其蛋白表达水平下调,呈现出凋亡细胞的特征。经姜黄素预先处理,软骨细胞存活率升高,超氧化物歧化酶、过氧化氢酶含量升高,丙二醛含量降低,Nrf2 mRNA及其蛋白表达水平升高,细胞核形态改善,随姜黄素浓度升高变化更明显。结果说明,姜黄素对H2O2所致软骨细胞氧化应激损伤保护作用可能是通过增强Nrf2表达来实现的。
 

关键词: 组织构建, 软骨细胞, 姜黄素, 氧化应激, Nrf2

Abstract:

BACKGROUND: Several studies have showed that oxidative stress plays an important role in the development of osteoarthritis. Curcumin has the effect of antioxidation and eliminating free radicals.
OBJECTIVE: To observe the protective effect of curcumin on chondrocytes through the establishment of a model of oxidative stress damage induced by H2O2.
METHODS: Sprague-Dawley rat articular chondrocytes were prepared and cultured in vitro. Then, the cells were randomly divided into five groups: normal, model (H2O2), low-, mediate-, high-dose curcumin groups (20, 40, 80 μmol/L). Curcumin and chondrocytes were incubated about 48 hours, and then H2O2 was added and co-cultured for 24 hours. Cell viability was detected by MTT assay, and the levels of superoxide dismutase, malondialdehyde, catalase in cells were detected. The mRNA and protein expressions of Nrf2 were detected by real-time PCR and western blot, respectively. The changes of cell nucleus shape were observed.
RESULTS AND CONCLUSION: Compared with the normal group, in the model group, the survival rate of chondrocytes decreased; the levels of superoxide dismutase and catalase decreased, while the level of malondialdehyde increased; the mRNA and protein expressions of Nrf2 were down-regulated, and the  
characteristics of apoptotic cells were presented. Compared with the model group, in the three groups pretreated with curcumin, the survival rate of chondrocytes increased; the levels of superoxide dismutase and catalase increased, while the level of malondialdehyde decreased; the mRNA and protein expressions of Nrf2 were up-regulated, and the morphology of cell nucleus was improved by curcumin pretreatment. With the increase of concentration, these changes were more obvious. These findings indicate that the protective effect of curcumin against oxidative stress injury induced by H2O2 in chondrocytes can be achieved by enhancing the expression of Nrf2. 

 

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