Acute infection of Sindbis virus induces phosphorylation and intracellular translocation of small heat shock protein HSP27 and activation of p38 MAP kinase signaling pathway.

Abstract:

:In general, viral infection is supposed to induce stress responses in the host cell. However, very few detailed observations about virus-induced stress responses have been reported. Here we investigated specific stress responses in Vero cells infected with Sindbis virus (SV), a single-stranded RNA virus, acute infection with which is known to cause apoptotic cell death in the host cells. Prior to the onset of apoptosis, p38 mitogen-activated protein kinase (MAPK) and c-Jun NH2-terminal kinases (JNKs) were activated. Subsequently, a 27-kDa heat shock protein (HSP27) became phosphorylated, and intracellular distribution of HSP27 was changed from the cytoplasm to the perinuclear region. These results indicate that the cellular signaling cascades activated by pro-inflammatory cytokines and environmental stresses are also activated as a result of lytic infection with SV. These responses may contribute to the delayed onset of apoptosis in the host cells and the facilitation of viral replication.

authors

Nakatsue T,Katoh I,Nakamura S,Takahashi Y,Ikawa Y,Yoshinaka Y

doi

10.1006/bbrc.1998.9724

subject

Has Abstract

pub_date

1998-12-09 00:00:00

pages

59-64

issue

1

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(98)99724-8

journal_volume

253

pub_type

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