| Literature DB >> 19818738 |
Minh-Hieu Pham1, Navya Kondapalli, Calvin L Reckord, P David Foglesong.
Abstract
The induction by interleukin-2 of DNA topoisomerase I and DNA topoisomerase II activities in the human T cell line HuT 78 was investigated. HuT 78 cells were treated with 1000 U of interleukin-2/ml, and extracts of the HuT 78 nuclei were prepared over a 24h period. The extracts were assayed quantitatively for the activities of DNA topoisomerase I and DNA topoisomerase II. Three concomitant, transient increases of 3- to 11-fold in the specific activities of both DNA topoisomerase I and DNA topoisomerase II were observed following treatment with IL-2 at 0.5, 4, and 10h after treatment with interleukin-2. The specific activities of both enzymes returned to base-line values after each of these transient increases. These results reveal that the activities of DNA topoisomerase I and DNA topoisomerase II are highly regulated in HuT 78 cells upon treatment with IL-2.Entities:
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Year: 2009 PMID： 19818738 PMCID： PMC2789651 DOI： 10.1016/j.bbrc.2009.10.008
Source DB: PubMed Journal: Biochem Biophys Res Commun ISSN： 0006-291X Impact factor: 3.575