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Inhibition of protein kinases C prevents murine cytomegalovirus replication (CROSBI ID 114387)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Kučić, Natalia ; Mahmutefendić, Hana ; Lučin, Pero Inhibition of protein kinases C prevents murine cytomegalovirus replication // Journal of general virology, 86 (2005), 8; 2153-2161-x

Podaci o odgovornosti

Kučić, Natalia ; Mahmutefendić, Hana ; Lučin, Pero

engleski

Inhibition of protein kinases C prevents murine cytomegalovirus replication

For successful establishment of infection and initiation of the replication cycle, murine cytomegalovirus (MCMV) utilizes cellular structures and functions, including cell-membrane penetration, capsid dismantling and cytosolic transport of viral DNA into the nucleus. These early events of MCMV infections are dependent on cellular regulatory mechanisms, primarily protein phosphorylation. In the present study, protein kinase inhibitors were used to explore the role of protein phosphorylation mediated by protein kinases C (PKCs) in the very early events of MCMV infection. Inhibitory effects were determined by immunofluorescence and Western blot analysis of MCMV IE1 and E1 protein expression and by production of infectious virions in cell culture. It was found that H-7, a broadly specific inhibitor of cellular protein kinases, prevented virus replication in a dose-dependent and reversible manner, and that the block in replication occurred very early in infection. More specific PKC inhibitors (sangivamycin, calphostin C and bisindolylmaleimide II), Ca2+/calmodulin inhibitors (EDTA and W7) and phorbol esters (PMA) were used to dissect PKC-subclass contribution in the very early events of MCMV replication. The results indicate that the role of diacylglycerol/phorbol ester-dependent but calcium-independent PKCs is essential for establishment of MCMV infection in the host cell, starting at a very early stage of infection.

protein kinase C; murine cytomegalovirus; protein kinase C inhibitors

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Podaci o izdanju

86 (8)

2005.

2153-2161-x

objavljeno

0022-1317

Povezanost rada

nije evidentirano

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