Sequential inhibitory effects of antitumor agents related to levodopa and dopamine upon DNA synthetic enzymes.
Sequential inhibitory effects of antitumor agents related to levodopa and dopamine upon DNA synthetic enzymes.
复制标题
左旋多巴和多巴胺相关抗肿瘤药物对 DNA 合成酶的连续抑制作用。
DOI:
10.1016/0006-2952(86)90525-3
复制
发表时间:
1986
影响因子:
5.8
通讯作者:
Wick,MM
中科院分区:
文献类型:
--
作者:
Fitzgerald,GB;Wick,MM
Novel antitumor agents related to levodopa and dopamine exhibit a selective and rapid inhibition of DNA synthesis as measured by thymidine incorporation. Our investigations have attempted to determine the biochemical basis of the selective inhibition of tumor cells and in this present study we examined the effects of these agents on thymidylate synthase. The dihydroxybenzene derivatives were found to inhibit thymidylate synthasein situat concentrations ranging between 100 and 800 μM. The quinols did not inhibit partially purified thymidylate synthase, although the oxidized quinones did cause inhibition at concentrations between 10 and 100 μM. Time course experiments suggested that the inhibition of thymidylate synthasein situby the dihydroxybenzene derivatives occurs after the inhibition of thymidine incorporation, indicating that an earlier event was critical to the inhibition of DNA synthesis. With the use of a novelin situassay which measured the release of [3H]water from [5-3H] uridine in intact cells, we were able to show that one of the earliest biochemical events is the inhibition of ribonucleotide reductase and that the inhibition of thymidylate synthase, which is delayed by approximately 30 min, was indirectly mediated possibly through effects on ribonucleotide reductase.
登录
查看更多内容
影响因子:
5.8
作者:
G. Foley;H. Lazarus
通讯作者:
H. Lazarus
影响因子:
2.9
作者:
M. R. Miller;J. Castellot;A. Pardee
通讯作者:
A. Pardee
DOI:
10.1111/1523-1747.ep12531751
发表时间:
1983
期刊:
The Journal of investigative dermatology
影响因子:
--
作者:
FitzGerald,GB;Wick,MM
通讯作者:
Wick,MM
影响因子:
4.8
作者:
W. Rode;K. Scanlon;B. Moroson;J. Bertino
通讯作者:
J. Bertino
影响因子:
5.8
作者:
FitzGerald,GB;Wick,MM
通讯作者:
Wick,MM