Nonclassical MHC class Ib-restricted cytotoxic T cells monitor antigen processing in the endoplasmic reticulum.
Nonclassical MHC class Ib-restricted cytotoxic T cells monitor antigen processing in the endoplasmic reticulum.
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非经典MHC类IB限制的细胞毒性T细胞监测内质网中的抗原加工。
DOI:
10.1038/ni.2282
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发表时间:
2012-04-22
影响因子:
30.5
通讯作者:
Shastri, Nilabh
中科院分区:
文献类型:
--
作者:
Nagarajan, Niranjana A.;Gonzalez, Federico;Shastri, Nilabh
The ER aminopeptidase associated with antigen processing, ERAAP, is essential for trimming peptides presented by MHC I molecules. ERAAP inhibition by cytomegalovirus causes immune evasion, and ERAAP polymorphisms are associated with autoimmune disorders. How normal ERAAP function is monitored is unknown. We found that ERAAP inhibition rapidly induced presentation of the FL9 peptide by the Qa-1b MHC Ib molecule. Antigen-experienced T cells specific for the Qa-1b-FL9 complex were frequent in naïve mice. Wild-type mice immunized with ERAAP-deficient cells mounted a potent CD8+ T cell response specific for the Qa-1b-FL9- complex. MHC Ib-restricted cytolytic effectors specifically eliminated ERAAP-deficient cells in vitro and in vivo. Thus, non-classical peptide-Qa-1b complexes direct cytotoxic T cells to targets with defective antigen processing in the ER.
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影响因子:
30.5
作者:
通讯作者:
--
影响因子:
32.4
作者:
Moon, James J.;Chu, H. Hamlet;Jenkins, Marc K.
通讯作者:
Jenkins, Marc K.
影响因子:
64.8
作者:
FALK, K;ROTZSCHKE, O;RAMMENSEE, HG
通讯作者:
RAMMENSEE, HG
影响因子:
4.4
作者:
SANDERSON, S;SHASTRI, N
通讯作者:
SHASTRI, N
DOI:
10.1084/jem.20081829
发表时间:
2009-02-16
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Haluszczak C;Akue AD;Hamilton SE;Johnson LD;Pujanauski L;Teodorovic L;Jameson SC;Kedl RM
通讯作者:
Kedl RM