Rescue of Temperature-sensitive Poliovirus 1
AUTOR(ES)
Nichol, F. Richard
RESUMO
A temperature-sensitive strain of type 1 poliovirus, LSc, was functionally rescued when infected cells were incubated at 40 C in the presence of Mahoney, a temperature-resistant strain of type 1 poliovirus. The rescue value was 9% of the mutant yield obtained under permissive conditions. Rescued virus underwent replication, because the progeny of 32P-labeled LSc were not radiosensitive. Serum inactivation studies with Mahoney specific antiserum indicated that a small amount of phenotypic mixing occurred among the rescued particles. The temperature-sensitive event occurred between 2 and 4 hr postinfection in the developmental cycle of LSc. Neither viral polymerase activity nor virus-induced ribonucleic acid could be demonstrated in infected cells between 2 and 4 hr after infection at 40 C with the temperature-sensitive mutant.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=375629Documentos Relacionados
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