CD127与T淋巴细胞

CD127 and T Lymphocytes

CD127是IL-7受体α链,T淋巴细胞对IL-7的特异性应答主要通过CD127的表达进行调控的。CD127在胸腺细胞向T淋巴细胞的发育过程、成熟T细胞内环境稳态的维持、病毒感染后T细胞的免疫应答及记忆性T细胞的分化及幸存等方面发挥重要的作用,在整个T淋巴细胞生命周期中仅有两个阶段缺乏CD127的表达:DP期T细胞及激活的T细胞。近期,随着对CD127研究的不断深入,发现CD127在作为记忆性T细胞及调节性T细胞特异性的表面标记物方面也发挥着重要作用。介绍了CD127在T淋巴细胞生命周期的不同阶段所发挥的作用并对其作用机制进行了讨论。

CD127 is the interleukin -7 receptor α （ IL-7Rα ）, it regulates the specific respond of T lymphocytes to IL-7. CD127 plays an indispensable role in the development of thymocytes into T lymphocytes, the survival and homeostatic proliferation of memory T cells. There are only two phases of the life period of T cells that do not express CD127 ： immature CD4^＋8^＋ double positive （DP） thymocytes and activated T cells. Recently, it was found that CD127 play an important role as the specific marker of memory T cells and regulator T cells. The role and mechanism of CD127 in the life period of T cells were discussed herein.