中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (24): 3773-3777.doi: 10.3969/j.issn.2095-4344.2017.24.001

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

骨桥蛋白可促进骨关节炎软骨细胞增殖

姜 未1,林博文1,张 轩1,王 华1,高曙光2,张方杰2   

  1. 1深圳市人民医院骨关节科,暨南大学第二临床医学院,广东省深圳市 518020;2中南大学湘雅医院骨科,湖南省长沙市 410006
  • 修回日期:2017-05-03 出版日期:2017-08-28 发布日期:2017-08-30
  • 通讯作者: 姜未,博士,主治医师,深圳市人民医院骨关节科,暨南大学第二临床医学院,广东省深圳市 518020
  • 作者简介:姜未,男,1986年生,湖南省常德市人,汉族, 2013年湘雅医院毕业,博士,主治医师,主要从事骨关节退行性疾病的病因及防治研究。
  • 基金资助:

    深圳市科技创新项目(JCYJ20150403101028191)

Osteopontin promotes chondrocyte proliferation in osteoarthritis

Jiang Wei1, Lin Bo-wen1, Zhang Xuan1, Wang Hua1, Gao Shu-guang2, Zhang Fang-jie2   

  1. 1Department of Bone and Joint Surgery, Shenzhen People’s Hospital, Second Clinical Medical College of Jinan University, Shenzhen 518020, Guangdong Province, China; 2Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410006, Hunan Province, China
  • Revised:2017-05-03 Online:2017-08-28 Published:2017-08-30
  • Contact: Jiang Wei, Department of Bone and Joint Surgery, Shenzhen People’s Hospital, Second Clinical Medical College of Jinan University, Shenzhen 518020, Guangdong Province, China
  • About author:Jiang Wei, M.D., Attending physician, Department of Bone and Joint Surgery, Shenzhen People’s Hospital, Second Clinical Medical College of Jinan University, Shenzhen 518020, Guangdong Province, China
  • Supported by:

    the Science and Technology Innovation Foundation of Shenzhen, No. JCYJ20150403101028191

摘要:

文章快速阅读:

文题释义:
骨桥蛋白:
是一种带负电荷的分泌型糖基化磷蛋白,存在于体内多种细胞和组织,参与骨矿化作用、肿瘤细胞迁移、慢性感染性疾病等病理过程。
细胞增殖:细胞增殖是生物细胞重要生理功能之一,是生物生长、发育、繁殖以及遗传的基础,其主要以分裂的方式进行增殖。

 

摘要
背景:
骨桥蛋白是一种细胞外多功能基质糖蛋白,已被证实参与调控骨关节炎软骨细胞外基质成分的合成分解代谢,但对于骨关节炎软骨细胞本身增殖能力的影响,报道较少。
目的:观察骨桥蛋白对人膝骨关节炎软骨细胞增殖能力的影响。 
方法:所有软骨标本均取自湘雅医院于2012年1至6月因骨关节炎行膝关节置换患者,分离培养骨关节炎软骨细胞,分别予以骨桥蛋白干预、骨桥蛋白shRNA慢病毒转染、空白对照及Con-shRNA转染等处理,利用MTT及BrdU法检测细胞的增殖能力变化。
结果与结论:①骨桥蛋白shRNA慢病毒对骨关节炎软骨细胞转染率为80%;②与对照组相比,骨桥蛋白干预可明显上调骨关节炎软骨细胞吸光度值(P < 0.05),而骨桥蛋白shRNA慢病毒干扰组吸光度值则显著下降(P < 0.05);③骨桥蛋白shRNA转染后,骨桥蛋白的表达水平显著下降(P < 0.05);④结果表明骨桥蛋白可促进骨关节炎软骨细胞增殖,有望成为治疗骨关节炎的新靶点。

关键词: 组织构建, 软骨细胞, 骨桥蛋白, 骨关节炎, 细胞增殖, RNA干扰, 慢病毒转染, MTT, BrdU

Abstract:

BACKGROUND: Osteopontin, a kind of extracellular matrix glycoprotein, has been found to participate in synthesis and catabolism of osteoarthritic chondrocyte extracellular matrix. However, the effect of osteopontin on the proliferation ability of osteoarthritic chondrocytes is little reported.

OBJECTIVE: To investigate the effect of osteopontin on the chondrocyte proliferation in human knee osteoarthritis.
METHODS: Cartilage samples were obtained from the patients with knee osteoarthritis undergoing knee arthroplasty at the Xiangya Hospital from January 2012 to June 2012. The chondrocytes were isolated and cultured, and then divided into four groups: blank control, osteopontin, Con-shRNA and osteopontin-shRNA groups. The cell proliferation was detected by MTT and BrdU assays. 
RESULTS AND CONCLUSION: After transfection of osteopontin-shRNA lentivirus, the infection rate was up to 80%. Compared with the blank control group, osteopontin group showed a significant increase in the absorbance value of osteoarthritic chondrocytes, while after osteopontin-shRNA lentivirus transfection, the absorbance value was significantly decreased (both P < 0.05). Additionally, after osteopontin-shRNA transfection, the expression level of osteopontin was significantly downregulated (P < 0.05). To conclude, osteopontin can promote the proliferation of osteoarthritic chondrocytes, which is considered as a new treatment target for osteoarthritis.

 

 

Key words: Osteopontin, Osteoarthritis, Chondrocytes, Cell Proliferation, Tissue Engineering

中图分类号: