The Redox-sensing Gene Affects Intestinal Homeostasis, Insecticide Resistance, and Zika Virus Susceptibility in the Mosquito

Overview

Journal J Biol Chem

Specialty Biochemistry

Date 2018 Apr 25

PMID 29685890

Citations 21

Authors

Vanessa Bottino-Rojas

Octavio A C Talyuli

Luana Carrara

Ademir J Martins

Anthony A James

Pedro L Oliveira

Gabriela O Paiva-Silva

Affiliations

Soon will be listed here.

Abstract

Production and degradation of reactive oxygen species (ROS) are extensively regulated to ensure proper cellular responses to various environmental stimuli and stresses. Moreover, physiologically generated ROS function as secondary messengers that can influence tissue homeostasis. The cap'n'collar transcription factor known as nuclear factor erythroid-derived factor 2 (Nrf2) coordinates an evolutionarily conserved transcriptional activation pathway that mediates antioxidant and detoxification responses in many animal species, including insects and mammals. Here, we show that Nrf2-mediated signaling affects embryo survival, midgut homeostasis, and redox biology in , a mosquito species vector of dengue, Zika, and other disease-causing viruses. We observed that AeNrf2 silencing increases ROS levels and stimulates intestinal stem cell proliferation. Because ROS production is a major aspect of innate immunity in mosquito gut, we found that a decrease in Nrf2 signaling results in reduced microbiota growth and Zika virus infection. Moreover, we provide evidence that AeNrf2 signaling also controls transcriptional adaptation of to insecticide challenge. Therefore, we conclude that Nrf2-mediated response regulates assorted gene clusters in that determine cellular and midgut redox balance, affecting overall xenobiotic resistance and vectorial adaptation of the mosquito.

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