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RI Glazer and KD Hartman
Total mRNA from human colon carcinoma cell line HT-29 treated with the pyrrolopyrimidine antibiotic, sangivamycin(7-deaza-7- carboxamidoadenosine), was assessed in vitro using a reticulocyte lysate translation system. Under conditions of known drug-induced cell lethality, sangivamycin-modified mRNA showed a diminished translational capacity. The decreased activity of drug-modified mRNA increased in proportion to the time-dependent cytocidal effects of sangivamycin in this cell line. These data suggest that the lethal effects of this drug may be associated, in part, with a reduced ability of drug-modified mRNA to sustain translation in situ.
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