3,4-Dihydroxybenzylamine: an improved dopamine analog cytotoxic for melanoma cells in part through oxidation products inhibitory to dna polymerase.
3,4-Dihydroxybenzylamine: an improved dopamine analog cytotoxic for melanoma cells in part through oxidation products inhibitory to dna polymerase.
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3,4-二羟基苄胺:一种改进的多巴胺类似物,部分通过抑制 DNA 聚合酶的氧化产物对黑色素瘤细胞具有细胞毒性。
DOI:
10.1111/1523-1747.ep12531751
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发表时间:
1983
期刊:
影响因子:
--
通讯作者:
Wick,MM
中科院分区:
文献类型:
--
作者:
FitzGerald,GB;Wick,MM
The dopamine analog 3,4-dihydroxybenzy benzylamine (3,4 DHBA), a novel antitumor agent, was shown to inhibit directly DNA polymerase in cells of the deeply pigmented murine melanoma, S-91A, Permeabilized to nucleotides by lysolecithin. In contrast, levodopa and dopamine did not inhibit DNA polymerase in permeabilised cells in the absence of exogenous tyrosinase. Analysis using isolated DNA polymeras showed that the inhibitory activity of the ortho dihydroxy compounds was totally dependent upon enzymatic activation. The enzymatic activation of the ortho derivative 3,4-DHBA by tyrosinase results in two reactive quinone. Inhibition of DNA polymerase by activated 3,4-DHBA was shown by dialysis and kinetic studies to involve an irreversible reaction which occurs at two inhibitor interaction sites as determined by a Hill plot analysis. Double-stranded DNA protected the enzyme from inhibition by 3,4-DHBA, suggesting that the inhibitory sites are at or near the template-initiator binding site.
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影响因子:
15.9
作者:
G. Salen;S. Shefer;T. Setoguchi;E. Mosbach
通讯作者:
E. Mosbach
DOI:
--
发表时间:
1973
期刊:
影响因子:
--
作者:
I. Björkhem;J. Gustafsson
通讯作者:
J. Gustafsson
DOI:
10.1172/jci108366
发表时间:
1976
期刊:
The Journal of clinical investigation
影响因子:
--
作者:
S. Shefer;F. Cheng;B. Dayal;S. Hauser;G. Tint;G. Salen;E. Mosbach
通讯作者:
E. Mosbach
DOI:
10.1172/jci112030
发表时间:
1985
期刊:
The Journal of clinical investigation
影响因子:
--
作者:
Salen,G;Shefer,S;Tint,GS;Nicolau,G;Dayal,B;Batta,AK
通讯作者:
Batta,AK
影响因子:
4.8
作者:
I. Björkhem;I. Holmberg
通讯作者:
I. Holmberg