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Phosphorylation of Nonmuscle myosin II-A regulatory light chain resists Sendai virus fusion with host cells

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Title Phosphorylation of Nonmuscle myosin II-A regulatory light chain resists Sendai virus fusion with host cells
 
Creator DAS, P
SAHA, S
CHANDRA, S
DAS, A
DEY, SK
DAS, MR
SEN, S
SARKAR, DP
JANA, SS
 
Subject MEDIATED MEMBRANE-FUSION
PROTEIN-KINASE-C
ACTIN CYTOSKELETON
STRUCTURAL BASIS
PARAMYXOVIRUS-F
VIRAL-INFECTION
PORE EXPANSION
CONTRACTILITY
INHIBITION
MIGRATION
 
Description Enveloped viruses enter host cells through membrane fusion and the cells in turn alter their shape to accommodate components of the virus. However, the role of nonmuscle myosin II of the actomyosin complex of host cells in membrane fusion is yet to be understood. Herein, we show that both (-) blebbistatin, a specific inhibitor of nonmuscle myosin II (NMII) and small interfering RNA markedly augment fusion of Sendai virus (SeV), with chinese hamster ovary cells and human hepatocarcinoma cells. Inhibition of RLC phosphorylation using inhibitors against ROCK, but not PKC and MRCK, or overexpression of phospho-dead mutant of RLC enhances membrane fusion. SeV infection increases cellular stiffness and myosin light chain phosphorylation at two hour post infection. Taken together, the present investigation strongly indicates that Rho-ROCK-NMII contractility signaling pathway may provide a physical barrier to host cells against viral fusion.
 
Publisher NATURE PUBLISHING GROUP
 
Date 2016-01-15T06:38:51Z
2016-01-15T06:38:51Z
2015
 
Type Article
 
Identifier SCIENTIFIC REPORTS, 5
2045-2322
http://dx.doi.org/10.1038/srep10395
http://dspace.library.iitb.ac.in/jspui/handle/100/17953
 
Language en