Cutting edge: NADPH oxidase modulates MHC class II antigen presentation by B cells.
Cutting edge: NADPH oxidase modulates MHC class II antigen presentation by B cells.
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最前沿:NADPH 氧化酶调节 B 细胞的 MHC II 类抗原呈递。
DOI:
10.4049/jimmunol.1103080
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发表时间:
2012-10-15
期刊:
影响因子:
--
通讯作者:
Blum JS
中科院分区:
文献类型:
--
作者:
Crotzer VL;Matute JD;Arias AA;Zhao H;Quilliam LA;Dinauer MC;Blum JS
Phagocyte NADPH oxidase plays a key role in pathogen clearance via reactive oxygen species (ROS) production. Defects in oxidase function result in chronic granulomatous disease (CGD) with hallmark recurrent microbial infections and inflammation. The oxidase′s role in the adaptive immune response is not well-understood. Class II presentation of cytoplasmic and exogenous Ag to CD4+ T cells was impaired in human B cells with reduced oxidase p40phox subunit expression. Naturally arising mutations which compromise p40phox function in a CGD patient also perturbed class II Ag presentation and intracellular ROS production. Reconstitution of patient B cells with wild-type, but not a mutant, p40phox allele restored exogenous Ag presentation and intracellular ROS generation. Remarkably, class II presentation of epitopes from membrane Ag was robust in p40phox-deficient B cells. These studies reveal a role for NADPH oxidase and p40phox in skewing epitope selection and T cell recognition of self Ag.
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影响因子:
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