Modifications at the C-Terminus To Improve Pyrrole-Imidazole Polyamide Activity in Cell Culture

被引:36
作者
Jacobs, Claire S. [1 ]
Dervan, Peter B. [1 ]
机构
[1] CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA
基金
美国国家卫生研究院;
关键词
DNA MINOR-GROOVE; SOLID-PHASE SYNTHESIS; NUCLEAR-LOCALIZATION; TRANSCRIPTION FACTORS; BINDING POLYAMIDES; HAIRPIN POLYAMIDES; BASE-PAIRS; RECOGNITION; INHIBITION; EXPRESSION;
D O I
10.1021/jm900256f
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
Pyrrole-imidazole (Py-Im) hairpin Polyamides are a class of small molecule DNA minor groove binding compounds that have been shown to modulate endogenous gene expression in cell culture. Gene regulation by polyamides requires efficient cellular uptake and nuclear localization properties for candidate compounds. To further optimize Py-Im polyamides for enhanced potency in cell culture, a focused library of polyamides possessing various modifications at the C-terminus was synthesized and tested. Comparison of polyamide biological activity in two cell lines revealed tolerance for structural modifications and agreement in activity trends between cell lines. The use of an oxime linkage between the polyamide and ail aromatic functionality on the C-terminus resulted in a similar to 20-fold increase in the potency of polyamides targeted to the androgen response element (ARE) in LNCaP cells by measuring AR-activated PSA expression.
引用
收藏
页码:7380 / 7388
页数:9
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