当前位置： SCI文献检索 > PLoS Neglected Tropical Diseases期刊下所有文献 > Polyphenol-Rich Diets Exacerbate AMPK-Mediated Autophagy, Decreasing Proliferation of Mosquito Midgut Microbiota, and Extending Vector Lifespan.

Polyphenol-Rich Diets Exacerbate AMPK-Mediated Autophagy, Decreasing Proliferation of Mosquito Midgut Microbiota, and Extending Vector Lifespan.

Abstract：

BACKGROUND:Mosquitoes feed on plant-derived fluids such as nectar and sap and are exposed to bioactive molecules found in this dietary source. However, the role of such molecules on mosquito vectorial capacity is unknown. Weather has been recognized as a major determinant of the spread of dengue, and plants under abiotic stress increase their production of polyphenols. RESULTS:Here, we show that including polyphenols in mosquito meals promoted the activation of AMP-dependent protein kinase (AMPK). AMPK positively regulated midgut autophagy leading to a decrease in bacterial proliferation and an increase in vector lifespan. Suppression of AMPK activity resulted in a 6-fold increase in midgut microbiota. Similarly, inhibition of polyphenol-induced autophagy induced an 8-fold increase in bacterial proliferation. Mosquitoes maintained on the polyphenol diet were readily infected by dengue virus. CONCLUSION:The present findings uncover a new direct route by which exacerbation of autophagy through activation of the AMPK pathway leads to a more efficient control of mosquito midgut microbiota and increases the average mosquito lifespan. Our results suggest for the first time that the polyphenol content and availability of the surrounding vegetation may increase the population of mosquitoes prone to infection with arboviruses.

journal_name

PLoS Negl Trop Dis

journal_title

PLoS neglected tropical diseases

authors

Nunes RD,Ventura-Martins G,Moretti DM,Medeiros-Castro P,Rocha-Santos C,Daumas-Filho CR,Bittencourt-Cunha PR,Martins-Cardoso K,Cudischevitch CO,Menna-Barreto RF,Oliveira JH,Gusmão DS,Alves Lemos FJ,Alviano DS,Oliveira PL,Low

doi

10.1371/journal.pntd.0005034

subject

Has Abstract

pub_date

2016-10-12 00:00:00

pages

e0005034

issue

10

eissn

1935-2727

issn

1935-2735

pii

PNTD-D-16-00351

journal_volume

10

pub_type

杂志文章

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