Protein kinases C as potential host targets for the inhibition of chikungunya virus replication.
We have shown previously that prostratin, a non-tumor promoting phorbol ester, inhibits chikungunya virus (CHIKV)-induced cytopathic effects in vitro. Prostratin is a potent activator of protein kinases C (PKC), a family of related serine/threonine kinases that regulate many cellular processes such as proliferation and apoptosis. The objective of this study was to explore the mechanism of the anti-CHIKV activity of prostratin. Prostratin reduced the production of infectious virus particles and viral protein accumulation in a dose-dependent manner at a post-entry step during virus replication. The antiviral effect of the compound was cell-dependent, with potent antiviral activity observed in human skin fibroblasts cells, the primary target cells of CHIKV infection. The antiviral activity of prostratin was markedly reduced in the presence of PKC inhibitors, therefore confirming that the antiviral effect results from an activation of PKCs. Together these results showed that PKCs are potential host targets for the inhibition of CHIKV replication.
['Abdelnabi|Rana|R|', 'Amrun|Siti Naqiah|SN|', 'Ng|Lisa F P|LF|', 'Leyssen|Pieter|P|', 'Neyts|Johan|J|', 'Delang|Leen|L|']
D000098:Acetophenones D000818:Animals D001578:Benzopyrans D065632:Chikungunya Fever D002646:Chikungunya virus D002522:Chlorocebus aethiops D003588:Cytopathogenic Effect, Viral D004791:Enzyme Inhibitors D005347:Fibroblasts D006801:Humans D010703:Phorbol Esters D011493:Protein Kinase C D011758:Pyrroles D011799:Quinazolines D012867:Skin D014709:Vero Cells D014779:Virus Replication
Protein kinase C Chikungunya virus Prostratin Rottlerin Sotrastaurin