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- W2079485023 abstract "ABSTRACT Human parainfluenza virus type 1 (HPIV1) is an important respiratory pathogen in children and the most common cause of viral croup. We performed a microarray-based analysis of gene expression kinetics to examine how wild-type (wt) HPIV1 infection altered gene expression in human respiratory epithelial cells and what role beta interferon played in this response. We similarly evaluated HPIV1-P(C−), a highly attenuated and apoptosis-inducing virus that does not express any of the four C proteins, and HPIV1-C F170S , a less attenuated mutant that contains a single point mutation in C and, like wt HPIV1, does not efficiently induce apoptosis, to examine the role of the C proteins in controlling host gene expression. We also used these data to investigate whether the phenotypic differences between the two C mutants could be explained at the transcriptional level. Mutation or deletion of the C proteins of HPIV1 permitted the activation of over 2,000 cellular genes that otherwise would be repressed by HPIV1 infection. Thus, the C proteins profoundly suppress the response of human respiratory cells to HPIV1 infection. Cellular pathways targeted by the HPIV1 C proteins were identified and their transcriptional control was analyzed using bioinformatics. Transcription factor binding sites for IRF and NF-κB were overrepresented in some of the C protein-targeted pathways, but other pathways were dominated by less-known factors, such as forkhead transcription factor FOXD1. Surprisingly, the host responses to the P(C−) and C F170S mutants were very similar, and only subtle differences in the expression kinetics of caspase 3 and TRAIL receptor 2 were observed. Thus, changes in host cell transcription did not reflect the striking phenotypic differences observed between these two viruses." @default.
- W2079485023 created "2016-06-24" @default.
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- W2079485023 date "2009-02-15" @default.
- W2079485023 modified "2023-10-10" @default.
- W2079485023 title "The C Proteins of Human Parainfluenza Virus Type 1 (HPIV1) Control the Transcription of a Broad Array of Cellular Genes That Would Otherwise Respond to HPIV1 Infection" @default.
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- W2079485023 doi "https://doi.org/10.1128/jvi.01373-08" @default.
- W2079485023 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2643784" @default.
- W2079485023 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19052086" @default.
- W2079485023 hasPublicationYear "2009" @default.
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