首页> 外文期刊>European Journal of Medicinal Chemistry: Chimie Therapeutique >Synthesis, structure-activity relationship and in vitro pharmacodynamics of A-ring modified caged xanthones in a preclinical model of inflammatory breast cancer
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Synthesis, structure-activity relationship and in vitro pharmacodynamics of A-ring modified caged xanthones in a preclinical model of inflammatory breast cancer

机译:炎症乳腺癌临床前模型中A型环形改性X原酮的合成,结构 - 活性关系和体外药效学

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Inflammatory breast cancer (IBC) is a highly metastatic, lethal form of breast cancer that lacks targeted therapeutic strategies. Inspired by the promising cytotoxicity of gambogic acid and related caged xanthones in spheroids(MARY-X), an in vitro preclinical IBC model, we constructed a library of synthetic analogs and performed structure-activity relationship studies. The studies revealed that functionalizing the A-ring of the caged xanthone framework can significantly affect potency. Specifically, introduction of hydroxyl or fluorine groups at discrete positions of the A-ring leads to enhanced cytotoxicity at sub-micromolar concentrations. These compounds induce complete dissolution of spheroids(MARY-X) with subsequent apoptosis of both the peripherally- and centrally-located cells, proliferative and quiescent-prone (e.g. hypoxic), respectively. These results highlight the structural flexibility and pharmacological potential of the caged xanthone motif for the design of IBC-targeting therapeutics. (C) 2019 Elsevier Masson SAS. All rights reserved.
机译:炎症乳腺癌(IBC)是一种高度转移的致死形式的乳腺癌,缺乏有针对性的治疗策略。灵感灵感来自甘草酸的有前途的细胞毒性和与球体(Mary-x)中的冠状糖细胞,一种体外临床前IBC模型,我们构建了合成类似物的文库并进行了结构 - 活动关系研究。研究表明,官能化笼荧光框架的圆环可以显着影响效力。具体地,在A形环的离散位置处引入羟基或氟基团导致亚微型摩尔浓度的细胞毒性增强。这些化合物分别诱导球形(Mary-X)的完全溶解,随后的外围和中心位细胞,增殖和静脉倾向(例如缺氧)。这些结果突出了Xanthone主题用于设计IBC靶向治疗的结构的灵活性和药理潜力。 (c)2019年Elsevier Masson SAS。版权所有。

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