B7-1单抗和CsA联用诱导人T细胞无能及其特性探讨

Anergy and Characteristics of Human T Cells Induced by Combination with B7-1 mAb and CsA

目的:在体外探讨T细胞无能诱导的条件及其生物学特性.方法:将B7-1单抗和CsA联用在体外诱致了抗原特异性T细胞无能,采用RT-PCR法检测了无能T细胞细胞因子基因的表达.结果:T细胞无能为抗原特异性的,多克隆激活剂PHA、CD3单抗和PMA+A23187可以恢复无能T细胞的活性 ; IL-2可以阻止T细胞无能的形成,但不能逆转其耐受状态;无能T细胞IL2和IFNmRNA是关闭的,而IL-4和IL-10RNA则是开放的.结论对细胞无能在体外可以诱导的,无能T细胞细胞因子基因格局向Th2样偏离.

To study the induced condition and characteristics of T cell anergy in vitro. Methods: Anergic Tcell was induced by combination of B7-1 mAb and cyclosporin A (CsA) in vitro, cytokine gene of anergic T cells was detected by RT-PCR. Results: T cell anergy was antigen-specific. The state of T cell anergy can be reversed by PHA, CD3 mAb and PMA plus A23187. IL-2 can prevent the induction of T cell anergy, but it can not reverse the state of un-responsiveness. IL-2 and IFN mRNA can not express in anergic T cells. In contrast, IL-4 and IL-10 mRNA were detectable. Conclusion: T cell anergy can be induced in vitro , cytokine profile of anergic T cells deviated to Th2-like phe-norype.