华西口腔医学杂志

• 专栏论著 • 上一篇    下一篇

颞下颌关节骨关节病髁突软骨细胞雌激素受体β差异表达的研究

方泽强;马绪臣   

  1. 北京大学口腔医院  颞下颌关节病及口颌面痛诊治中心,北京 100081
  • 收稿日期:2006-10-25 修回日期:2006-10-25 出版日期:2006-10-20 发布日期:2006-10-20
  • 通讯作者: 马绪臣,Tel:13910388260
  • 作者简介:方泽强(1965-),男,湖北人,主治医师,博士,现在重庆医科大学口腔医院颌面外

Study on Differential Estrogen Receptor β Expression of Mandibular Condylar Chondrocyte in Temporo-mandibular Joint Osteoarthritis

FANG Ze-qiang, MA Xu-chen   

  1. Center for Temporomandibular Diseases and Orofacial Pain, School of Stomatology, Peking University, Beijing 100081, China
  • Received:2006-10-25 Revised:2006-10-25 Online:2006-10-20 Published:2006-10-20

摘要:

目的  探讨大鼠颞下颌关节骨关节病髁突软骨细胞雌激素受体β(ERβ)的差异表达。方法  25只SD大鼠随机分为实验组(15只)和对照组(10只)。实验组以去除左侧
部分关节盘的方法建立大鼠颞下颌关节骨关节病模型,术后3个月处死动物,取其髁突软骨细胞进行培养,采用免疫组化、逆转录聚合酶链反应、肽质量指纹谱(PMF)和Western blot等方法观察软骨细胞中ERβ蛋白和mRNA的表达。结果  PMF显示,ERβ是软骨细胞线粒体蛋白质组的成分,Western blot、逆转录聚合酶链反应和免疫组化结果显示,ERβ在实验组细胞和线粒体中表达水平较对照组降低(P<0.01)。结论  ERβ可能通过线粒体途径参与了颞下颌关节骨关节病的病理过程。

关键词: 雌激素受体β, 软骨细胞, 线粒体, 骨关节病

Abstract:

Objective  To test the differential Estrogen Receptor(ER) beta levels of mitochondrial proteome of mandibular condylar chondrocyte in the rat model of temporomandibular joints osteoarthritis(TMJOA). Methods  25 SD rats were divided into experimental group(15 rats) and control group(10 rats) randomly. TMJOA models were created in left sides of TMJ of 15 SD rats by the partial resection of the articular disc. The experimental rats were killed 3 months after operation. After the chondrocytes culture, Immunohistochemistry, semiquantitative RT-PCR and Western blot were used to test the differential ER beta expression levels in mitochondrial proteome of mandibular condylar chondrocytes. Mitochondrial proteins identification was carried out by two-dimensional electrophoresis and peptide mass fingerprint(PMF). Results  PMF showed that one of the differential proteins was ERβ. Immunohistoche-mistry and Western blot results suggested the significant difference of ERβ protein levels between operation-treated and control group. The operation-treated group had
lower ERβ levels(P<0.01). Conclusion  It has been demonstrated that ERβ protein levels were decreased in mitochondria of TMJOA mandibular condylar chondrocytes, which suggests a role for mitochondrial ERβ in the effects on TMJOA. The pathological role of ERβ in the regulation of TMJOA progress remains to be elucidated.

Key words: estrogen receptor beta, chondrocyte, mitochondria, osteoarthritis