Effect of Sindbis virus infection on induction of heat shock proteins in Aedes albopictus cells.

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RESUMO

When Aedes albopictus cells (clone C7) were infected with Sindbis virus, the production of cytopathic effect CPE depended largely on the conditions under which the cells were cultured. We observed marked inhibition of cellular RNA and protein synthesis, as well as a loss of the ability to induce heat shock proteins, e.g., hsp70, under conditions which led to cytopathic effect. Infected cells in which heat shock proteins could no longer be induced contained much lower amounts of hsp70 mRNA after heat shock than did mock-infected cells which were similarly treated. It is suggested that this decreased level of hsp70 mRNA is due to a failure of these cells to synthesize hsp70 mRNA after heat shock.

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