Vimentin interacts with heterogeneous nuclear ribonucleoproteins and dengue nonstructural protein 1 and is important for viral replication and release
Resource
MOLECULAR BIOSYSTEMS, 6(5), 795-806
Journal
Molecular BioSystems
Pages
795
Date Issued
2010
Date
2010
Author(s)
Kanlaya, Rattiyaporn
Pattanakitsakul, Sa-nga
Sinchaikul, Supachok
Chen, Shui-Tein
Thongboonkerd, Visith
Abstract
Our previous study using expression proteomics demonstrated that many proteins, particularly five forms of heterogeneous nuclear ribonucleoproteins (hnRNPs), were up-regulated in human endothelial cells upon dengue virus infection. To address functional significance of these proteins in response to dengue virus infection, we performed a functional proteomics study to identify hnRNPs-interacting proteins in the infected EA.hy926 cells. Immunoprecipitation followed by 2-D PAGE and mass spectrometric analyses revealed 18 and 13 interacting partners of hnRNP C1/C2 and hnRNP K, respectively. Interestingly, vimentin was a common partner for both hnRNP C1/C2 and K. The interaction between vimentin and these hnRNPs was confirmed by reciprocal immunoprecipitation followed by Western blot analysis and also by double immunofluorescence staining. Disruption of vimentin intermediate filament by acrylamide not only dissociated these complexes but also reduced nuclear hnRNPs expression, whereas cytosolic hnRNPs expression was unchanged. We also demonstrated that vimentin was strongly associated with dengue non-structural protein 1 (NS1). Disruption of vimentin intermediate filament not only dissociated this complex but also reduced dengue NS1 expression, as well as viral replication and release. Our data report for the first time that vimentin interacts with hnRNPs and dengue NS1, and plays a crucial role in replication and release of dengue virus. ? 2010 The Royal Society of Chemistry.
SDGs
Other Subjects
heterogeneous nuclear ribonucleoprotein; vimentin; virus protein; article; cell line; Dengue virus; human; immunoprecipitation; metabolism; protein binding; tandem mass spectrometry; two dimensional gel electrophoresis; Cell Line; Dengue Virus; Electrophoresis, Gel, Two-Dimensional; Heterogeneous-Nuclear Ribonucleoproteins; Humans; Immunoprecipitation; Protein Binding; Tandem Mass Spectrometry; Vimentin; Viral Nonstructural Proteins; Dengue virus
Type
journal article
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