Potent and selective inhibition of human immunodeficiency virus type 1 transcription by piperazinyloxoquinoline derivatives

被引:72
|
作者
Baba, M
Okamoto, M
Makino, M
Kimura, Y
Ikeuchi, T
Sakaguchi, T
Okamoto, T
机构
[1] DAIICHI PHARMACEUT CO LTD, NEW PROD RES LABS 1, TOKYO 134, JAPAN
[2] NAGOYA CITY UNIV, SCH MED, DEPT MOL GENET, NAGOYA, AICHI 467, JAPAN
关键词
D O I
10.1128/AAC.41.6.1250
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
We have found novel piperazinyloxoquinoline derivatives to be potent and selective inhibitors of human immunodeficiency virus type 1 (HIV-1) replication in both acutely and chronically infected cells. 8-Difluoromethoxy-1-ethyl-6-fluoro-1,4-didehydro-7-[4-(2-methoxyphenyl)-1-piperazinyl]-4-oxoquinoline-3-carboxylic acid (K-12), the most potent congener of the series, completely inhibited HIV-1 replication in acutely infected MOLT-4 cells at a concentration of 0.16 to 0.8 mu M without showing any cytotoxicity. The compound completely suppressed tumor necrosis factor alpha (TNF-alpha)-induced HIV-1 expression in latently infected cells (OM-10.1) and constitutive viral production in chronically infected cells (MOLT-4/IIIB) at a concentration of 0.8 mu M. K-12 could also inhibit HIV-1 antigen expression in OM-10.1 and MOLT-4/IIIB cells at this concentration. Northern blot analysis revealed that K-12 selectively prevented the accumulation of HIV-1 mRNA in MOLT-4/IIIB and TNF-alpha-treated OM-10.1 cells in a dose-dependent fashion. It was not inhibitory to HIV-1 Tat or the cellular transcription factors NF-kappa B and Sp1, suggesting that the piperazinyloxoquinoline derivatives are a group of HIV-1 transcription inhibitors with a unique mechanism of action.
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页码:1250 / 1255
页数:6
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