Reports

Tritiated thymidine incorporation does not measure DNA synthesis in ribavirin-treated human cells

+ See all authors and affiliations

Science  01 May 1981:
Vol. 212, Issue 4494, pp. 549-551
DOI: 10.1126/science.7209549

Abstract

When the incorporation of tritiated thymidine into acid insoluble material was measured, ribavirin appeared to be a potent inhibitor of DNA synthesis in KB cells and human lymphocytes. Inhibition was nearly 100-fold less, however, when DNA synthesis was measured by incorporation of phosphorus-32-labeled phosphate or by DNA fluorescence. The potent inhibition detected by incorporation of tritiated thymidine into DNA actually was the result of a potent effect on the labeling of deoxythymidine triphosphate, not on the synthesis of DNA.

Related Content