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Mosquito Antiviral piRNA Pathway

Objective

Mosquitoes transmit several medically and economically important ARthropod-BOrne (arbo)viruses to mammals (including humans), such as dengue virus and chikungunya virus (CHIKV). Unlike infection in their mammalian host, infection in their arthropod vector is apathogenic and persistent due to the interplay between the virus and the innate immune responses. The main antiviral mechanism in mosquitoes is the sequence specific RNA break down mechanism- RNA interference (RNAi), specifically the 21 nucleotide (nt) long small interfering (si)RNAs are considered to play a key role; however, siRNAs are not likely to be essential for the establishment of persistent viral infection. Recently small RNA molecules derived from different pathway have been reported to have an antiviral role in aedine mosquitoes and derived cell lines: PIWI interacting (pi)RNAs (24-29 nt). Persistent infection ensures that mosquitoes remain infectious and if piRNAs control this process, they could play a key part in regulating subsequent arbovirus transmission to humans. Little is known about the piRNA pathway in mosquitoes and even less about its interaction with arbovirus infections. Most of the work has focused on the identification and analysis of (viral specific) small RNAs (siRNA and piRNAs) in infected mosquitoes, but little on the proteins and the protein-RNA interactions involved in these processes.
The proposed research project will use a multidisciplinary approach that involves molecular virology with CHIKV, quantitative proteomics, RNA sequencing and knock down experiments in Aedes aegypti derived cells and mosquitoes to comprehensively understand for the first time the piRNA pathway, its involvement and importance to regulate arbovirus infections in aedine mosquitoes. The findings will extend our knowledge on the interactions between arboviruses and their mosquito vector and generate information that could be used in novel disease-spread control strategies.

Fields of science (EuroSciVoc)

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Programme(s)

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Topic(s)

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Funding Scheme

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MSCA-IF-EF-ST - Standard EF

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Call for proposal

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(opens in new window) H2020-MSCA-IF-2014

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Coordinator

UNIVERSITY OF GLASGOW
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 195 454,80
Address
UNIVERSITY AVENUE
G12 8QQ Glasgow
United Kingdom

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Region
Scotland West Central Scotland Glasgow City
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 195 454,80
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