Inhibitory effects of quinones on RNase H activity associated with HIV‐1 reverse transcriptase

Inhibitory effects of quinones on RNase H activity associated with HIV‐1 reverse transcriptase
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醌对与 HIV-1 逆转录酶相关的 RNase H 活性的抑制作用

DOI:
10.1002/ptr.808
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发表时间:
2002
影响因子:
7.2
通讯作者:
M. Hattori
M. Hattori
中科院分区:
医学2区
文献类型:
--
作者:
B. Min;H. Miyashiro;M. Hattori

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为了开发预防人类免疫缺陷病毒(HIV)生长的新药,我们开发了一种与HIV-1逆转录酶(RT)相关的核糖核酸酶H(RNase H)活性的体外测定方法。一些萘醌,如1,4-萘醌(1),维生素K3(2),胡桃醌(3)和白花丹素(6),中度抑制RNase H活性,而其他,包括naphthazarin(5)和紫草素(8-9,18-23),表现出弱抑制作用。二萜醌类化合物丹参酮(24-28)也对RNase H活性具有中等抑制作用。在这些醌类化合物中,化合物1对RNA酶H活性的抑制作用最强,50%抑制浓度(IC 50)为9.5 μM,对RNA依赖性和DNA依赖性DNA聚合酶(RDDP和DDDP)活性的抑制作用中等,IC 50值分别为69和36 μM。  化合物3和5对RDDP(IC 50分别为8 μ M和10μM)和DDDP(IC 50分别为5 μ M和7μM)活性有明显的抑制作用。     萘醌类化合物的构效关系表明,非羟基化萘醌类化合物(1和2)对RNase H活性有明显的抑制作用,而5羟基化萘醌类化合物(3和5)对RDDP和DDDP活性有较强的抑制作用。版权所有© 2002年约翰威利父子有限公司。
In an effort to develop new drugs preventing the growth of human immunodeficiency virus (HIV), we developed an in vitro assay method of ribonuclease H (RNase H) activity associated with reverse transcriptase (RT) from HIV‐1. Some naphthoquinones, such as 1,4‐naphthoquinone (1), vitamin K3 (2), juglone (3) and plumbagin (6), moderately inhibited RNase H activity, and others, including naphthazarin (5) and shikonins (8–9, 18–23), showed weak inhibition. Diterpenoid quinones, tanshinones (24–28), had also moderate inhibition against RNase H activity. Of these quinones, compound 1 showed the most potent inhibition on RNase H activity with a 50% inhibitory concentration (IC50) of 9.5 μM, together with moderate inhibition against RNA‐dependent and DNA‐dependent DNA polymerase (RDDP and DDDP) activities with IC50 values of 69 and 36 μM, respectively. Compounds 3 and 5 showed significant inhibition against RDDP (IC50 = 8 and 10 μM, respectively) and DDDP (IC50 = 5 and 7 μM, respectively) activities. The structure‐activity relationship of the naphthoquinones suggested that non‐hydroxylated naphthoquinones (1 and 2) showed significant inhibition of RNase H activity, whereas 5‐hydroxylated naphthoquinones (3 and 5) showed potent inhibition against RDDP and DDDP activities. Copyright © 2002 John Wiley & Sons, Ltd.
人类免疫缺陷病毒逆转录酶相关的 RNase H 活性。
DOI: --
发表时间: 1989
期刊: The Journal of biological chemistry
影响因子: --
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Starnes,MC;Cheng,YC
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人类免疫缺陷病毒逆转录酶表现出部分持续的 3 至 5 核酸内切酶活性。
DOI: --
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伊利马醌(RNase H 活性的选择性抑制剂)与人类免疫缺陷和鼠白血病逆转录病毒的逆转录酶的相互作用。
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期刊: Biochemistry
影响因子: 2.9
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