Apaf1 plays a negative regulatory role in T cell responses by suppressing activation of antigen-stimulated T cells.
Apaf1 plays a negative regulatory role in T cell responses by suppressing activation of antigen-stimulated T cells.
复制标题
DOI:
10.1371/journal.pone.0195119
复制
发表时间:
2018
期刊:
影响因子:
3.7
通讯作者:
Yoshida H
中科院分区:
文献类型:
--
作者:
Tong H;Miyake Y;Mi-Ichi F;Iwakura Y;Hara H;Yoshida H
Apaf1 is a critical component of the apoptosome and initiates apoptosis downstream mitochondrial damages. Although the importance of Apaf1 in embryonic development was shown, the role of Apaf1 in immune responses, especially T cell responses, has yet to be elucidated. We generated T cell-specific Apaf1-deficient mice (Lck-Cre-Apaf1f/f mice) and examined the antigen-specific delayed-type hypersensitivity (DTH). Lck-Cre-Apaf1f/f mice exhibited exacerbation of DTH responses as compared with Apaf1-sufficient control mice. In Lck-Cre-Apaf1f/f mice, antigen-specific T cells proliferated more, and produced more inflammatory cytokines than control T cells. Apaf1-deficient T cells from antigen-immunized mice showed higher percentages of activation phenotypes upon restimulation in vitro. Apaf1-deficient T cells from naive (non-immunized) mice also showed higher proliferation activity and cytokine production over control cells. The impact of Apaf1-deficiency in T cells, however, was not restored by a pan-caspase inhibitor, suggesting that the role of Apaf1 in T cell responses was caspase-independent/non-apoptotic. These data collectively demonstrated that Apaf1 is a negative regulator of T cell responses and implicated Apaf1 as a potential target for immunosuppressive drug discovery.
登录
查看更多内容
影响因子:
4.8
作者:
Jiang, XJ;Wang, XD
通讯作者:
Wang, XD
影响因子:
3.8
作者:
Lawrence, C. P.;Chow, S. C.
通讯作者:
Chow, S. C.
影响因子:
7.2
作者:
Mondragon, Laura;Galluzzi, Lorenzo;Kroemer, Guido
通讯作者:
Kroemer, Guido
影响因子:
64.5
作者:
Yoshida, H;Kong, YY;Mak, TW
通讯作者:
Mak, TW
影响因子:
16
作者:
Chau, BN;Cheng, EHY;Hardwick, JM
通讯作者:
Hardwick, JM