Hemocyte differentiation mediates innate immune memory in Anopheles gambiae mosquitoes.

Hemocyte differentiation mediates innate immune memory in Anopheles gambiae mosquitoes.
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DOI:
10.1126/science.1190689
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发表时间:
2010-09-10
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Barillas-Mury C
Barillas-Mury C
中科院分区:
其他
文献类型:
--
作者:
Rodrigues J;Brayner FA;Alves LC;Dixit R;Barillas-Mury C

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疟疾寄生虫疟原虫的动动子入侵蚊子中肠,破坏了通常阻止肠道微生物群与上皮细胞直接接触的屏障。这会引发一种长期反应,其特点是昆虫血腔中循环的粒细胞(血细胞亚群)丰度增加,并且对细菌的免疫力增强,间接降低了疟原虫再次感染时的存活率。在蚊子中,血细胞的分化对于赋予先天免疫记忆是必要且充分的。
Mosquito midgut invasion by ookinetes of the malaria parasite Plasmodium disrupts the barriers that normally prevent the gut microbiota from coming in direct contact with epithelial cells. This triggers a long-lived response characterized by increased abundance of granulocytes, a subpopulation of hemocytes, circulating in the insect’s hemocoel, and enhanced immunity to bacteria that indirectly reduces survival of Plasmodium parasites upon reinfection. In mosquitoes, differentiation of hemocytes was necessary and sufficient to confer innate immune memory.
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