RSV replication is attenuated by counteracting expression of the suppressor of cytokine signaling (SOCS) molecules
pmid: 19595407
RSV replication is attenuated by counteracting expression of the suppressor of cytokine signaling (SOCS) molecules
Human RSV causes an annual epidemic of respiratory tract illness in infants and in elderly. Mechanisms by which RSV antagonizes IFN-mediated antiviral responses include inhibition of type I IFN mRNA transcription and blocking signal transduction of JAK/STAT family members. The suppressor of cytokines signaling (SOCS) gene family utilizes a feedback loop to inhibit cytokine responses and block the activation of the JAK/STAT signaling pathway. To evaluate the potential of SOCS molecules to subvert the innate immune response to RSV infection, eight SOCS family genes were examined. RSV infection up-regulated SOCS1, SOCS3, and CIS mRNA expression in HEp-2 cells. Suppression of SOCS1, SOCS3 and CIS by short interfering ribonucleic acid (siRNA) inhibited viral replication. Furthermore, inhibition of SOCS1, SOCS3, or CIS activated type I IFN signaling by inducing STAT1/2 phosphorylation. These results suggest that RSV infection escapes the innate antiviral response by inducing SOCS1, SOCS3 or CIS expression in epithelial cells.
- Sapporo Medical University Japan
- Vanderbilt University Medical Center United States
- Fukushima Medical University Japan
Gene Expression Profiling, RSV, Epithelial Cells, Suppressor of Cytokine Signaling Proteins, IFN, Virus Replication, SOCS, JAK/STAT, Cell Line, Respiratory Syncytial Viruses, Up-Regulation, Suppressor of Cytokine Signaling 1 Protein, Suppressor of Cytokine Signaling 3 Protein, siRNA, Virology, Gene Knockdown Techniques, Cytokines, Humans, Gene Silencing, RNA, Small Interfering
Gene Expression Profiling, RSV, Epithelial Cells, Suppressor of Cytokine Signaling Proteins, IFN, Virus Replication, SOCS, JAK/STAT, Cell Line, Respiratory Syncytial Viruses, Up-Regulation, Suppressor of Cytokine Signaling 1 Protein, Suppressor of Cytokine Signaling 3 Protein, siRNA, Virology, Gene Knockdown Techniques, Cytokines, Humans, Gene Silencing, RNA, Small Interfering
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