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© Pierre Gounon
Virus influenza purifié, agent de la grippe. Ce virus enveloppé possède un génome fragmenté : 8 segments d'ARN négatif protégés par une nucléocapside.
Project

Role of cytoplasmic dynein during Japanese encephalitis virus infectious cycle

Team: Environment and Infectious Risks
PI: Nathalie Pardigon
Member: Justine Basset
Scientific Fields
Diseases
Organisms
Applications
Technique
Starting Date
15
Jun 2018
Keywords
2 Keywords
Status
Completed
Members
2
Structures
1

About

This project examines the impact of dynein inhibition on Japanese encephalitis virus (JEV) infectious cycle. Several Flaviviruses (JEV, West Nile virus, yellow fever virus, Zika virus) show alteration of their infectious cycle in the presence of a small molecule inhibitor Ciliobrevin D, which specifically inhibits ATPase activity of cytoplasmic dynein.

We recently identified a time window comprised between 9 and 15h pi during which dynein is essential to JEV infectious cycle. JEV replication is indirectly affected when ATPase activity of dynein is inhibited, with an inhibition of translation and a decrease in infectious particles production, while specific infectivity is increased.

Thus dynein seems to play a role in JEV viral assembly and secretion steps. Moreover, ATPase activity of dynein is necessary for the transport of JEV capsid protein to the nucleus (J.Basset et al, in preparation).