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Title: Proteomic analysis of host responses in HepG2 cells during dengue virus infection
Authors: Sa Nga Pattanakitsakul
Kamonthip Rungrojcharoenkit
Rattiyaporn Kanlaya
Supachok Sinchaikul
Sansanee Noisakran
Shui Tein Chen
Prida Malasit
Visith Thongboonkerd
Mahidol University
Thailand National Center for Genetic Engineering and Biotechnology
Genomics Research Center, Academia Sinica
National Taiwan University
Faculty of Medicine, Siriraj Hospital, Mahidol University
Keywords: Biochemistry, Genetics and Molecular Biology
Issue Date: 1-Dec-2007
Citation: Journal of Proteome Research. Vol.6, No.12 (2007), 4592-4600
Abstract: Dengue virus infection remains a public health problem worldwide. However, its pathogenic mechanisms and pathophysiology are still poorly understood. We performed proteomic analysis to evaluate early host responses (as indicated by altered proteins) in human target cells during dengue virus infection. HepG2 cells were infected with dengue virus serotype 2 (DEN-2) at multiplicity of infection (MOI) of 0.1, 0.5, and 1.0. Quantitative analyses of DEN-2 infection and cell death at 12, 24, and 48 h postinfection showed that the MOI of 1.0 with 24 h postinfection duration was the optimal condition to evaluate early host responses, as this condition provided the high %Infection (∼80%), while %Cell death (∼20%) was comparable to that of the mock-control cells. Proteins derived from the mock-control and DEN-2-infected cells were resolved by 2-D PAGE (n = 5 gels for each group) and visualized by SYPRO Ruby stain. Quantitative intensity analysis revealed 17 differentially expressed proteins, which were successfully identified by peptide mass fingerprinting. Most of these altered proteins were the key factors involved in transcription and translation processes. Further functional study on these altered proteins may lead to better understanding of the pathogenic mechanisms and host responses to dengue virus infection, and also to the identification of new therapeutic targets for dengue virus infection. © 2007 American Chemical Society.
ISSN: 15353893
Appears in Collections:Scopus 2006-2010

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