Design, synthesis, and evaluation of pH-dependent hydrolyzable emetine analogues as treatment for prostate cancer.

Design, synthesis, and evaluation of pH-dependent hydrolyzable emetine analogues as treatment for prostate cancer.
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DOI:
10.1021/jm300426q
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发表时间:
2012-09-13
影响因子:
7.3
通讯作者:
Bakare, Oladapo
Bakare, Oladapo
中科院分区:
医学1区
文献类型:
--
作者:
Akinboye, Emmanuel S.;Rosen, Marc D.;Denmeade, Samuel R.;Kwabi-Addo, Bernard;Bakare, Oladapo

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将天然产物依地酸的N-2′位衍生为硫脲、脲、磺酰胺、二硫代氨基甲酸酯、氨基甲酸酯和pH响应性水解酰胺类似物。这些类似物在PC 3和LNCaP前列腺癌细胞系中的体外研究表明,这些类似物的细胞毒性(平均IC 50范围为0.079 μM至10 μM)通常低于艾美替尼(IC 50范围为0.0237至0.0329 μM)。pH敏感的二硫代氨基甲酸钠盐13和酰胺类似物21、22、26(从马来酸酐和柠康酸酐获得)在癌症微环境中发现的温和酸性条件下显示出最有希望作为酸可活化的前药。这些前药在pH 6.5时释放12 - 83%的雌二醇,在pH 5.5时释放41 - 95%的雌二醇。化合物13和26进一步显示在处理时已经低于pH 7.0的PC 3细胞培养基中表现出增加的细胞毒性。
The N-2′ position of the natural product emetine has been derivatized to thiourea, urea, sulfonamide, dithiocarbamate, carbamate and pH responsive hydrolysable amide analogs. In-vitro studies of these analogs in PC3 and LNCaP prostate cancer cell lines showed that the analogs are generally less cytotoxic (average IC50 ranging from 0.079 μM to 10 μM) than emetine (IC50 ranging from 0.0237 to 0.0329 μM). The pH sensitive sodium dithiocarbamate salt 13 and the amide analogs 21, 22, 26 (obtained from maleic and citraconic anhydrides) showed the most promise as acid-activatable prodrugs under mildly acidic conditions found in the cancer micro-environment. These prodrugs released 12 – 83% of emetine at pH 6.5 and 41 – 95% emetine at pH 5.5. Compounds 13 and 26 were further shown to exhibit increased cytotoxicity in PC3 cell culture media that was already below pH 7.0 at the time of treatment.
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