id author title date pages extension mime words sentences flesch summary cache txt cord-298938-xemarhlv Goswami, Biswendu B. Apoptosis induced by a cytopathic hepatitis A virus is dependent on caspase activation following ribosomal RNA degradation but occurs in the absence of 2′–5′ oligoadenylate synthetase 2004-04-07 .txt text/plain 7455 369 51 title: Apoptosis induced by a cytopathic hepatitis A virus is dependent on caspase activation following ribosomal RNA degradation but occurs in the absence of 2′–5′ oligoadenylate synthetase We have presented previously evidence that the cytopathogenic 18f strain of hepatitis A virus (HAV) induced degradation of ribosomal RNA (rRNA) in infected cells [Arch. Based on the pattern of rRNA degradation in intact ribosomes, we suggested that the 18f virus activates the interferon (IFN) controlled 2 -5 oligoadenylic acid-dependent RNase L pathway (for recent reviews, see Stark et al., 1998; Barber, 2001; Sen, 2001) . First, the level of IFN, 2 -5 OAS and RNase L mRNAs were investigated by RT-PCR to determine if any of these RNAs were induced following virus infection (Fig. 8) . RT-PCR amplification of selected cellular and viral mRNAs. Two microgram of RNA isolated from virus infected, IFN-␤, or dsRNA treated cells were reverse transcribed in a volume of 20 l using oligo(dT) 15 as primer as described in Section 2. ./cache/cord-298938-xemarhlv.txt ./txt/cord-298938-xemarhlv.txt