VIVARNASILENCING

Antiviral Defense in the Vector Mosquito Aedes aegypti: induction and suppression of RNA silencing pathways

Coordinatore	STICHTING KATHOLIEKE UNIVERSITEIT    more Spiacenti, non ci sono informazioni su questo coordinatore. Contattare Fabio per maggiori infomrazioni, grazie.
Nazionalità Coordinatore	Netherlands [NL]
Totale costo	2˙000˙000 €
EC contributo	2˙000˙000 €
Programma	FP7-IDEAS-ERC Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	ERC-2013-CoG
Funding Scheme	ERC-CG
Anno di inizio	2014
Periodo (anno-mese-giorno)	2014-08-01   -   2019-07-31

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	STICHTING KATHOLIEKE UNIVERSITEIT  Organization address address: GEERT GROOTEPLEIN NOORD 9 city: NIJMEGEN postcode: 6525 EZ contact info Titolo: Dr. Nome: Ronald Cognome: Van Rij Email: send email Telefono: +31 243617574	NL (NIJMEGEN)	hostInstitution	2˙000˙000.00
2	STICHTING KATHOLIEKE UNIVERSITEIT  Organization address address: GEERT GROOTEPLEIN NOORD 9 city: NIJMEGEN postcode: 6525 EZ contact info Titolo: Ms. Nome: Andrea Cognome: Kroon Email: send email Telefono: +31 243619872	NL (NIJMEGEN)	hostInstitution	2˙000˙000.00

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 Obiettivo del progetto (Objective)

'BACKGROUND: Mosquitoes and other blood-feeding arthropods transmit important human and animal viruses (arthropod-borne viruses, arboviruses). With the increasing global threat of arboviruses, it is essential to understand the virus-vector interactions that determine virus transmission. The mosquito antiviral immune response is a key determinant of virus replication and transmission. We recently showed that arboviruses are targeted by a poorly-understood RNA silencing pathway in the major vector mosquito Aedes aegypti: the Piwi-interacting RNA (piRNA) pathway. Our (published and unpublished) observations imply that the piRNA pathway contributes to antiviral defense against different classes of viruses in somatic tissues of mosquitoes. Moreover, we identified a novel class of endogenous gene-derived piRNAs in mosquitoes that may form a new paradigm for piRNA-based regulation of cellular gene expression.

AIM: This proposal has a three-fold aim: i) to delineate the biogenesis and function of the novel classes of virus- and gene-derived piRNAs, ii) to characterize mechanisms by which (arbo)viruses suppress or evade antiviral RNA silencing pathways, and by doing so, iii) to establish mosquitoes as an experimental model to characterize the complex piRNA machinery.

APPROACH: We will use Aedes cell lines that recapitulate all aspects of piRNA biogenesis. This allows us to use a unique, powerful approach of genomic, cell biological, biochemical, and proteomic methodologies to study piRNA biogenesis and function.

IMPORTANCE AND INNOVATION: This is the first study to comprehensively characterize viral and cellular piRNA biogenesis and function in mosquitoes. This proposal provides novel insights into the antiviral response in mosquitoes and may uncover novel regulatory functions of endogenous piRNAs. Moreover, it establishes a platform for functional and biochemical dissection of the complex biogenesis of piRNAs - the most enigmatic class of small silencing RNAs.'