Human thymic MR1-restricted MAIT cells are innate pathogen-reactive effectors that adapt following thymic egress.
Human thymic MR1-restricted MAIT cells are innate pathogen-reactive effectors that adapt following thymic egress.
复制标题
作者:
Human mucosal-associated invariant T (MAIT) cells express the semi-invariant T cell receptor Vα7.2 and are restricted by the MHC-Ib molecule MR1. While MAIT cells share similarities with other innate T cells the extent to which MAIT cells are innate and their capacity to adapt is unknown. We evaluated the function of Vα7.2+ T cells from the thymus, cord blood, and peripheral blood. While antigen-inexperienced MAIT cells displayed a naive phenotype these had intrinsic effector capacity in response to Mycobacterium tuberculosis infected cells. Vα7.2+ effector thymocytes contained sjTREC suggesting limited replication and thymic origin. In evaluating the capacity of Mtb-reactive MAIT cells to adapt, we found that those from peripheral blood demonstrated a memory phenotype and had undergone substantial expansion suggesting they responded to antigenic stimulation. MAIT cells, an evolutionarily conserved T cell subset that detects a variety of intracellular infections, share features of innate and adaptive immunity.
登录
查看更多内容
影响因子:
56.9
作者:
HASHIMOTO, K;HIRAI, M;KUROSAWA, Y
通讯作者:
KUROSAWA, Y
影响因子:
30.5
作者:
Le Bourhis, Lionel;Martin, Emmanuel;Lantz, Olivier
通讯作者:
Lantz, Olivier
影响因子:
30.5
作者:
通讯作者:
--
DOI:
10.1084/jem.20080996
发表时间:
2009-02-16
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Haines CJ;Giffon TD;Lu LS;Lu X;Tessier-Lavigne M;Ross DT;Lewis DB
通讯作者:
Lewis DB
影响因子:
6.4
作者:
Holder, JE;Kimpton, WG;Cahill, RNP
通讯作者:
Cahill, RNP