Epithelial nitration by a peroxidase/NOX5 system mediates mosquito antiplasmodial immunity.
Epithelial nitration by a peroxidase/NOX5 system mediates mosquito antiplasmodial immunity.
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DOI:
10.1126/science.1209678
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发表时间:
2012-02-17
期刊:
影响因子:
--
通讯作者:
Barillas-Mury C
中科院分区:
文献类型:
--
作者:
Oliveira Gde A;Lieberman J;Barillas-Mury C
Plasmodium ookinetes traverse midgut epithelial cells before they encounter the complement system in the mosquito hemolymph. We identified a heme peroxidase (HPX2) and NADPH oxidase 5 (NOX5) as critical mediators of midgut epithelial nitration and antiplasmodial immunity that enhance nitric oxide toxicity in Anopheles gambiae. We show that the two immune mechanisms that target ookinetes—epithelial nitration and thioester-containing protein 1 (TEP1)-mediated lysis—work sequentially and propose that epithelial nitration works as an opsonization-like system that promotes activation of the mosquito complement cascade.
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