Resistance of ribosomal protein mRNA translation to protein synthesis shutoff induced by poliovirus.

Poliovirus infection induces an overall inhibition of host protein synthesis, although some mRNAs continue to be translated, suggesting different translation requirements for cellular mRNAs. It is known that ribosomal protein mRNAs are translationally regulated and that the phosphorylation of ribosomal protein S6 is involved in the regulation. Here, we report that the translation of ribosomal protein mRNAs resists poliovirus infection and correlates with an increase in p70(s6k) activity and phosphorylation of ribosomal protein S6.