AP-1与NF-κB的活化表达与T细胞的无能

Expression of transcription factor AP-1 and NF-kappaB in anergic T cells

目的 :探讨无能T细胞IL 2产生的缺乏与转录因子AP 1和NF kappaB的关系。方法 :通过提取活化组和无能组T细胞的核蛋白 ,进行凝胶电泳迁移率变动分析实验 (EMSA) ,检测了转录因子AP 1和NF kappaB的表达情况。结果 :与活化组相比 ,无能T细胞中AP 1不但表达水平下降 ,且出现组份缺失现象 ;转录因子NF kappaB在无能T细胞中的表达则高于活化组 ,但均有三种复合物存在。结论 :无能T细胞IL 2产生减少或缺乏可能与转录因子AP 1和NF kappaB表达紊乱 (减弱或增强 )以及组份的缺失有关。

Objective:To explore the relationship between transcription factor AP 1 and NF kappaB and IL 2 decrease in anergic T cells.Methods:Nuclear proteins of activated T cells and anergic T cells were extracted and then the expression of AP 1 and NF kappaB were determinated by gel electrophorotic mobility shift assay.Results:Compared to activated T cells,anergic T cells expressed defective AP 1 transcription factor;there were three forms NF kappaB complex in both activated T cells and agergic T cells,but NF kappaB transcription activity was higher in anergic T cells than that in activated T cells.Conclusion:It has been demonstrated that these alteration of transcription factors have been likely to be responsible for repression of IL 2 in anergic T cells.