Gao Y, Sun L, Dong J, Xu X, Shu Y, Chen M, Yin L,. Rapid identification of small interfering RNA that can effectively inhibit the replication of multiple influenza B virus strains. Antivir Ther. 2006;11(4):431-8.
Influenza B virus is a cause of substantial morbidity and mortality in humans and current vaccination strategies and antiviral drugs only provide limited protection. Here, we report the evaluation of small interfering RNA (siRNA) for repression of viral replication in cultured cells as well as in chicken embryos. Several siRNAs targeting conserved regions of the virus (in chemically synthesized or plasmid-encoded forms) were found to effectively block the replication of the influenza B virus. The siRNAs were found to offer broad protection over several strains of influenza B virus (B/Beijing/76/98, B/Beijing/37/99 and B/Jiangsu/10/03) that differ substantially in their genetic content. The antiviral effects of 500 ng siRNA-encoding plasmids or 60 nmoles synthetic siRNA were found to be comparable to that of 3.6 microg ribavirin. These results indicated that RNA interference warrants further study for management of influenza B virus infections.
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