Abstract
Signal-mediated nuclear import and export proceed through the nuclear pore complex (NPC). Some NPC components, such as the nucleoporins (Nups) Nup98 and Nup96, are also associated with the nuclear interior. Nup98 is a target of the vesicular stomatitis virus (VSV) matrix (M) protein-mediated inhibition of messenger RNA (mRNA) nuclear export. Here, Nup98 and Nup96 were found to be up-regulated by interferon (IFN). M protein-mediated inhibition of mRNA nuclear export was reversed when cells were treated with IFN-gamma or transfected with a complementary DNA (cDNA) encoding Nup98 and Nup96. Thus, increased Nup98 and Nup96 expression constitutes an IFN-mediated mechanism that reverses M protein-mediated inhibition of gene expression.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Active Transport, Cell Nucleus
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Animals
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Cell Line
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Cell Nucleus / metabolism*
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Cells, Cultured
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Cytoplasm / metabolism
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DNA, Complementary
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DNA-Binding Proteins / genetics
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DNA-Binding Proteins / metabolism
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Gene Expression Regulation*
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Humans
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Interferon-gamma / pharmacology*
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Mice
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Nuclear Pore / metabolism
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Nuclear Pore Complex Proteins / genetics*
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Nuclear Pore Complex Proteins / metabolism
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RNA, Messenger / genetics
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RNA, Messenger / metabolism*
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STAT1 Transcription Factor
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Trans-Activators / genetics
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Trans-Activators / metabolism
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Transfection
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Tumor Cells, Cultured
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Viral Matrix Proteins / metabolism
Substances
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DNA, Complementary
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DNA-Binding Proteins
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M protein, Vesicular stomatitis virus
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Nuclear Pore Complex Proteins
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RNA, Messenger
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STAT1 Transcription Factor
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STAT1 protein, human
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Stat1 protein, mouse
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Trans-Activators
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Viral Matrix Proteins
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nuclear pore complex protein 96
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nuclear pore complex protein 98
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Interferon-gamma