中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (36): 5772-5777.doi: 10.3969/j.issn.2095-4344.0577

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

白藜芦醇干预小鼠软骨细胞固醇调节元件结合蛋白2及基质金属蛋白酶13的表达

袁  昊,曾  晖,陈  科,于  斐,林健静   

  1. (北京大学深圳医院骨关节科,广东省深圳市   518036)
  • 收稿日期:2018-07-20 出版日期:2018-12-28 发布日期:2018-12-28
  • 通讯作者: 曾晖,博士,硕士生导师,主任医师,北京大学深圳医院骨关节科,广东省深圳市 518036
  • 作者简介:袁昊,男,1988年生,河南省淮阳县人,汉族,2016年北京大学毕业,硕士,医师,主要从事骨关节炎相关研究。
  • 基金资助:

    深圳市科技研发资金项目(JCYJ20170307111755218,JCYJ20160428173412866)

Resveratrol regulates the expression of sterol regulatory element-binding protein-2 and matrix metalloproteinase 13 in mouse chondrocytes

Yuan Hao, Zeng Hui, Chen Ke, Yu Fei, Lin Jianjing   

  1. (Department of Orthopedics, Peking University Shenzhen Hospital, Shenzhen 518036, Guangdong Province, China)
  • Received:2018-07-20 Online:2018-12-28 Published:2018-12-28
  • Contact: Zeng Hui, MD, Master’s supervisor, Chief physician, Department of Orthopedics, Peking University Shenzhen Hospital, Shenzhen 518036, Guangdong Province, China
  • About author:Yuan Hao, Master, Physician, Department of Orthopedics, Peking University Shenzhen Hospital, Shenzhen 518036, Guangdong Province, China
  • Supported by:

    the Science and Technology Research and Development Project of Shenzhen, No. JCYJ20170307111755218 and JCYJ20160428173412866

摘要:

文章快速阅读:

文题释义:
固醇调节元件结合蛋白(SREBP):是位于内质网的细胞内胆固醇敏感器,通过Insig-Srebp-Scap途径对细胞内胆固醇进行反馈调节。
白藜芦醇:是多酚类化合物,主要来源于花生、葡萄(红葡萄酒)、虎杖、桑椹等植物。白藜芦醇是一种生物性很强的天然多酚类物质,又称为芪三酚,是肿瘤的化学预防剂,同时也可降低血小板聚集,预防和治疗动脉粥样硬化、心脑血管疾病。
摘要
背景
:新近研究表明,固醇调节元件结合蛋白2及基质金属蛋白酶13在骨关节炎软骨细胞中表达上调。白藜芦醇对于骨关节炎的防治作用被认为与其可以减少软骨细胞凋亡及滑膜炎症有关。
目的:进一步分析白藜芦醇对软骨细胞固醇调节元件结合蛋白2及基质金属蛋白酶13表达的影响。
方法:体外分离培养小鼠膝关节软骨细胞,采用Ⅱ型胶原免疫荧光染色鉴定软骨细胞。根据加入物的不同分为3 组:空白对照组、脂多糖干预组(1 mg/L)和白藜芦醇干预组(100 μmol/L白藜芦醇+1 mg/L脂多糖)。采用Westernblot检测软骨细胞中基质金属蛋白酶13的蛋白表达水平,酶联免疫吸附试验(ELISA)法检测各组软骨细胞固醇调节元件结合蛋白2的表达量。
结果与结论:①荧光显微镜下显示Ⅱ型胶原染色阳性细胞数占95%以上,证实所培养细胞为软骨细胞;②脂多糖组固醇调节元件结合蛋白2、基质金属蛋白酶13表达量较空白组明显升高,白藜芦醇组固醇调节元件结合蛋白2、基质金属蛋白酶13表达量较脂多糖组下降,但仍高于空白组;③结果表明,表明白藜芦醇可抑制小鼠软骨细胞固醇调节元件结合蛋白2和基质金属蛋白酶13的表达。

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: 0000-0001-6087-1455(袁昊)

关键词: 骨关节炎, 退行性变, 膝关节, 软骨细胞, 小鼠, 脂多糖, 白藜芦醇, 固醇调节元件结合蛋白2, SREBPs, 基质金属蛋白酶13, 组织构建

Abstract:

BACKGROUND: Recent studies suggest that sterol regulatory element-binding protein (SREBP)-2 and matrix metalloproteinase 13 (MMP-13) are up-regulated in chondrocytes of patients with osteoarthritis. The role of resveratrol in the prevention and treatment of osteoarthritis is considered to be involved in the reduction of chondrocyte apoptosis and synovial inflammation.
OBJECTIVE: To further investigate the effect of resveratrol on the expression of MMP-13 and SREBP-2 in chondrocytes.
METHODS: Mouse knee chondrocytes were isolated and cultured in vitro, and identified by immunofluorescence staining with collagen type II. The experiment was divided into three groups according to the different addition materials: blank control group, lipopolysaccharide group (1 mg/L) and resveratrol group (100 μmol/L resveratrol plus 1 mg/L lipopolysaccharide). The expression level of MMP-13 protein in chondrocytes was detected by western blot assay. The expression level of SREBP-2 in chondrocytes was determined by ELISA method.
RESULTS AND CONCLUSION: Fluorescence microscopy showed that the number of cells positive for collagen type II accounted for more than 95%, confirming that the cultured cells were chondrocytes. Compared with the blank control group, the expression levels of SREBP-2 and MMP-13 in the lipopolysaccharide group were significantly increased, and the expression levels of SREBP-2 and MMP-13 in the resveratrol group were lower than those in the lipopolysaccharide group, but they were still higher than those in the blank control group. In summary, resveratrol can inhibit the expression of SREBP-2 and MMP-13 in mouse 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

Key words: Osteoarthritis, Chondrocytes, Sterol Regulatory Element Binding Protein 2, Matrix Metalloproteinases

中图分类号: