To address the possible alteration of casein kinase 2 (CK2) in transmissible spongiform encephalopathies (TSEs), the levels and patterns of CK2 in the brain tissues of hamsters or C57BL mice inoculated intracerebrally with scrapie agents 263K or 139A were evaluated by Western blots, followed by quantitative analysis. Specific semi-quantitative RT-PCR for evaluating the mRNA transcripts of CK2 subunits was performed in parallel. Compared with normal animals, the levels of CK2α and CK2β in the brains of infected hamsters and mice were significantly decreased, regardless of which scrapie agent was. However, the expression of CK2α′ or CK2α′/CK2α′′ in the animals infected with agents 263K or 139A was considerably increased. Furthermore, decreases of CK2α and CK2β and increases of CK2α′/CK2α′′ were observed in cerebella homogenates from one familial Creutzfeldt-Jakob disease (fCJD) case and one fatal familial insomnia (FFI) case. These results suggest that alterations of CK2 subunits in brains are illness-correlative phenomena in TSEs and indicate a potential linkage of CK2 changes with the pathogenesis of prion diseases.
Archives of Virology – Springer Journals
Published: Jun 1, 2008
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