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  • Title: Transcriptomic comparison of human hepatoma Huh-7 cell clones with different hepatitis C virus replication efficiencies.
    Author: Inoue Y, Murakami K, Hmwe SS, Aizaki H, Suzuki T.
    Journal: Jpn J Infect Dis; 2007 Jul; 60(4):173-8. PubMed ID: 17642525.
    Abstract:
    Hepatitis C virus (HCV) infection represents a major public health problem throughout the world. The establishment of viral replicons has enhanced our understanding of the mechanism underlying HCV replication. However, the specific virus-host cell interactions involved in HCV RNA replication are not well understood. In the present study, we isolated several human hepatoma Huh-7-derived subclones with a range of HCV RNA replication efficiencies by end-point dilution. Of these, the clones HuhTe4 and HuhTe6 were observed to proliferate at the same rate; however, HuhTe6 supported a significantly greater degree of viral RNA replication. Using cDNA microarray analysis, a total of 36 genes (0.4%) demonstrated variable expression, with a >or=2-fold difference in expression noted between HuhTe4 and HuhTe6. Among genes that are implicated in a variety of functional categories, a subset of these differentially-expressed genes has a role in signal transduction and cell communication, including thioredoxin-interacting protein, Rab6B, sorting nexin 16 and UDP-galactose:ceramide glycosyltransferase. The genes identified in this study should be examined further to determine their roles in HCV RNA replication. The Huh-7 subclones identified in this study provide a tool for identifying novel host factors involved in viral replication.
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