Natural Microbe-Mediated Refractoriness to Plasmodium Infection in Anopheles gambiae

被引:426
作者
Cirimotich, Chris M. [1 ]
Dong, Yuemei [1 ]
Clayton, April M. [1 ]
Sandiford, Simone L. [1 ]
Souza-Neto, Jayme A. [1 ]
Mulenga, Musapa [2 ]
Dimopoulos, George [1 ]
机构
[1] Johns Hopkins Univ, Bloomberg Sch Publ Hlth, W Harry Feinstone Dept Mol Microbiol & Immunol, Baltimore, MD 21205 USA
[2] Malaria Inst Macha, Choma, Zambia
基金
美国国家卫生研究院;
关键词
MALARIA PARASITE INFECTION; GRAM-NEGATIVE BACTERIA; SPOROGONIC DEVELOPMENT; POPULATION-DYNAMICS; NITRIC-OXIDE; MOSQUITO; STEPHENSI; FALCIPARUM; RESISTANCE; IMMUNITY;
D O I
10.1126/science.1201618
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Malaria parasite transmission depends on the successful transition of Plasmodium through discrete developmental stages in the lumen of the mosquito midgut. Like the human intestinal tract, the mosquito midgut contains a diverse microbial flora, which may compromise the ability of Plasmodium to establish infection. We have identified an Enterobacter bacterium isolated from wild mosquito populations in Zambia that renders the mosquito resistant to infection with the human malaria parasite Plasmodium falciparum by interfering with parasite development before invasion of the midgut epithelium. Phenotypic analyses showed that the anti-Plasmodium mechanism requires small populations of replicating bacteria and is mediated through a mosquito-independent interaction with the malaria parasite. We show that this anti-Plasmodium effect is largely caused by bacterial generation of reactive oxygen species.
引用
收藏
页码:855 / 858
页数:4
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