蛋白酪氨酸激酶在IL-1β和TNF-α诱导类风湿关节炎成纤维样滑膜细胞MAPKs活化中的作用

被引：7

作者：

孙铁铮

吕厚山

药立波

机构：

[1] 北京医科大学人民医院骨关节病诊疗研究中心

[2] 第四军医大学生化系

来源：

中华风湿病学杂志 | 2000年 / 03期

关键词：

关节炎; 滑膜; 成纤维细胞; 蛋白质酪氨酸激酶; 有丝分裂原活化蛋白激酶; 白细胞介素1; 肿瘤坏死因子;

D O I：

暂无

中图分类号：

R593.22 [类风湿性关节炎];

学科分类号：

1002 ; 100201 ;

摘要：

目的　比较类风湿关节炎 (rheumatoidarthritis,RA)与骨关节炎 (osteoarthritis,OA)成纤维样滑膜细胞 (fibroblast likesynoviocytes,FLS)蛋白酪氨酸磷酸化状态的差异 ;探讨RAFLS中 ,蛋白酪氨酸激酶 (proteintyrosinekinase,PTK)在IL 1β和TNF α作用下有丝分裂原活化蛋白激酶 (mito genactivatedproteinkinase ,MAPKs)活化中的作用。方法　滑膜细胞原代培养 ,流式细胞仪鉴定滑膜细胞型别 ,提取蛋白进行SDS PAGE单相电泳和ICE PAGE双相电泳分离后 ,用Westernblots检测FLS蛋白磷酸化的状态。结果　滑膜细胞培养至第三代时 ,CD3、CD14、CD2 0、CD11b、vonWillebrandfactor阳性细胞比例小于 1% ;RAFLS蛋白酪氨酸磷酸化程度是OAFLS的 4～ 6倍 ;IL 1β和TNF α可以瞬时引起RAFLS蛋白酪氨酸磷酸化程度增加 ,并在短时间内激活MAPKs(ERK2 ,JNK2 和p38为主 ) :genistein对ERK2 活化抑制作用显著 ,而对于JNK2 、p38,活化的抑制则较弱。结论　原代培养的滑膜细胞当传代至第三代时即可以获得型别均一的成纤维样滑膜细胞 ;RAFLS蛋白酪氨酸磷酸化状态较OAFLS明显增高 ;IL 1β和TNF α可以瞬时引起RAFLS蛋白酪氨酸磷酸化程度增加 ,激活MAPKs通路 (EPK2 、JNK2 、p38) ,两种因子诱导MAPKs活化过程中PTK依赖途径和PTK非

引用

页码：135 / 139

页数：5

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