Reduces Malaria and Dengue Infection in Vector Mosquitoes and Has Entomopathogenic and Anti-pathogen Activities


The infectious agents that cause malaria and dengue are transmitted by Anopheles and Aedes mosquitoes, respectively. Bacteria found in the mosquito midgut have the potential to dramatically affect the susceptibility of the mosquito vector to the malaria parasite and dengue virus. In this work, we investigate one such microbe, Chromobacterium sp. (Csp_P), a bacterium isolated from a field-caught Aedes aegypti mosquito. We show that Csp_P can effectively colonize the midguts of Anopheles gambiae and Aedes aegypti mosquitoes and can, when ingested by the mosquito, significantly reduce the mosquito's susceptibility to infection with the malaria parasite and dengue virus. We also show that exposure to, and ingestion of, Csp_P can reduce the lifespan of larval and adult mosquitoes, respectively. We show that Csp_P has anti-Plasmodium and anti-dengue activity independent of the mosquito, suggesting that the bacterium secretes metabolites that could potentially be exploited to prevent disease transmission or to treat infection.


Vyšlo v časopise: Reduces Malaria and Dengue Infection in Vector Mosquitoes and Has Entomopathogenic and Anti-pathogen Activities. PLoS Pathog 10(10): e32767. doi:10.1371/journal.ppat.1004398
Kategorie: Research Article
prolekare.web.journal.doi_sk: 10.1371/journal.ppat.1004398

Souhrn

The infectious agents that cause malaria and dengue are transmitted by Anopheles and Aedes mosquitoes, respectively. Bacteria found in the mosquito midgut have the potential to dramatically affect the susceptibility of the mosquito vector to the malaria parasite and dengue virus. In this work, we investigate one such microbe, Chromobacterium sp. (Csp_P), a bacterium isolated from a field-caught Aedes aegypti mosquito. We show that Csp_P can effectively colonize the midguts of Anopheles gambiae and Aedes aegypti mosquitoes and can, when ingested by the mosquito, significantly reduce the mosquito's susceptibility to infection with the malaria parasite and dengue virus. We also show that exposure to, and ingestion of, Csp_P can reduce the lifespan of larval and adult mosquitoes, respectively. We show that Csp_P has anti-Plasmodium and anti-dengue activity independent of the mosquito, suggesting that the bacterium secretes metabolites that could potentially be exploited to prevent disease transmission or to treat infection.


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Štítky
Hygiena a epidemiológia Infekčné lekárstvo Laboratórium

Článok vyšiel v časopise

PLOS Pathogens


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