Discovery of novel alkylated (bis)urea and (bis)thiourea polyamine analogues with potent antimalarial activities.

Discovery of novel alkylated (bis)urea and (bis)thiourea polyamine analogues with potent antimalarial activities.
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发现具有有效抗疟疾活性的新型烷基化(BIS)尿素和(BIS)硫脲多胺类似物。

DOI:
10.1021/jm200463z
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发表时间:
2011-10-13
影响因子:
7.3
通讯作者:
Birkholtz, Lyn-Marie
Birkholtz, Lyn-Marie
中科院分区:
医学1区
文献类型:
--
作者:
Verlinden, Bianca K.;Niemand, Jandeli;Snyman, Janette;Sharma, Shiv K.;Beattie, Ross J.;Woster, Patrick M.;Birkholtz, Lyn-Marie

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合成了一系列烷基化(双)脲和(双)硫脲多胺类似物,并在体外对氯喹敏感和抗性恶性疟原虫株进行抗疟活性筛选。所有类似物在小于3 μM时均显示出对恶性疟原虫的生长抑制活性,其中大多数的有效IC 50值在100-650 nM范围内。类似物在暴露后24小时内阻止了寄生虫的生长,这是由于细胞核分裂受阻,因此导致了无性发育。此外,这种作用似乎是细胞毒性的,对疟原虫具有高度选择性(对恶性疟原虫的IC 50低7000倍以上),并且通过外源性添加多胺是不可逆的。与此第一次报告的有效的抗疟活性的多胺类似物含有3-7-3或3-6-3碳骨架和取代的末端脲或硫脲部分,我们建议,这些化合物代表了一类结构新颖的抗疟剂。
A series of alkylated (bis)urea and (bis)thiourea polyamine analogues were synthesized and screened for antimalarial activity against chloroquine-sensitive and -resistant strains of Plasmodium falciparum in vitro. All analogues showed growth inhibitory activity against P. falciparum at less than 3 μM, with the majority having effective IC50 values in the 100–650 nM range. Analogues arrested parasitic growth within 24 hours of exposure due to a block in nuclear division and therefore asexual development. Moreover, this effect appears to be cytotoxic and highly selective to malaria parasites (>7000-fold lower IC50 against P. falciparum) and is not reversible by the exogenous addition of polyamines. With this first report of potent antimalarial activity of polyamine analogues containing 3-7-3 or 3-6-3 carbon backbones and substituted terminal urea- or thiourea moieties, we propose that these compounds represent a structurally novel class of antimalarial agents.
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期刊: MICROBIOLOGY-SGM
影响因子: 2.8
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