Rapid increase in the activity of DNA topoisomerase I, but not topoisomerase II, in HL-60 promyelocytic leukemia cells treated with a phorbol diester.

Abstract

There is significant evidence to suggest that protein kinase C and DNA topoisomerases are functionally linked in signal transduction pathways. Much of this is based on the observation that phosphorylation of topoisomerase II by protein kinase C may lead to its activation in vitro and that inhibitors of topoisomerase II block phorbol diester-induced… (More)

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