Feline calicivirus (FCV) is a pathogenic microorganism that causes upper respiratory diseases in cats. Recently, an FCV infection with a high mortality rate has been confirmed, and there is need to develop a treatment for cases of acute infection. We evaluated whether the replication of FCV could be prevented by RNA interference. For this study, we designed an siRNA targeted to the polymerase region of the strain FCV-B isolated from a cat that died after exhibiting neurological symptoms. Cells transfected with siR-pol dose-dependently suppressed the replication of FCV-B. siR-pol suppressed its replication by suppressing the target viral RNA.
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