4.6 Article

Nonmuscle myosin IIA promotes the internalization of influenza A virus and regulates viral polymerase activity through interacting with nucleoprotein in human pulmonary cells

Journal

VIROLOGICA SINICA
Volume 38, Issue 1, Pages 128-141

Publisher

KEAI PUBLISHING LTD
DOI: 10.1016/j.virs.2022.12.002

Keywords

Myosin IIA (MYH9); Influenza A virus (IAV); vRNP activity; Virus-host interactions; Virus entry

Categories

Ask authors/readers for more resources

This study reveals the crucial role of nonmuscle myosin IIA (MYH9) in regulating influenza A virus (IAV) infection and replication. MYH9 can interact with the viral nucleoprotein (NP) and interrupt the formation of viral ribonucleoprotein (vRNP) complexes, leading to a suppression of viral RNA transcription and replication. These findings shed new light on the complicated interactions between IAV and its host, making MYH9 a potential target for antiviral drug development.
Influenza A virus (IAV), responsible for seasonal epidemics and recurring pandemics, represents a global threat to public health. Given the risk of a potential IAV pandemic, it is increasingly important to better understand virus -host interactions and develop new anti-viral strategies. Here, we reported nonmuscle myosin IIA (MYH9)-mediated regulation of IAV infection. MYH9 depletion caused a profound inhibition of IAV infection by reducing viral attachment and internalization in human lung epithelial cells. Surprisingly, overexpression of MYH9 also led to a significant reduction in viral productive infection. Interestingly, overexpression of MYH9 retained viral attachment, internalization, or uncoating, but suppressed the viral ribonucleoprotein (vRNP) activity in a mini-genome system. Further analyses found that excess MYH9 might interrupt the formation of vRNP by interacting with the viral nucleoprotein (NP) and result in the reduction of the completed vRNP in the nucleus, thereby inhibiting subsequent viral RNA transcription and replication. Together, we discovered that MYH9 can interact with IAV NP protein and engage in the regulation of vRNP complexes, thereby involving viral replication. These findings enlighten new mechanistic insights into the complicated interface of host-IAV interactions, ultimately making it an attractive target for the generation of antiviral drugs.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available