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Development of Potent Pyrazolopyrimidinone‐Based WEE1 Inhibitors with Limited Single‐Agent Cytotoxicity for Cancer Therapy
ChemMedChem ( IF 3.6 ) Pub Date : 2018-07-11 , DOI: 10.1002/cmdc.201800188 Christopher J. Matheson 1 , Kimberly A. Casalvieri 1 , Donald S. Backos 1 , Philip Reigan 1
ChemMedChem ( IF 3.6 ) Pub Date : 2018-07-11 , DOI: 10.1002/cmdc.201800188 Christopher J. Matheson 1 , Kimberly A. Casalvieri 1 , Donald S. Backos 1 , Philip Reigan 1
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WEE1 kinase regulates the G2/M cell‐cycle checkpoint, a critical mechanism for DNA repair in cancer cells that can confer resistance to DNA‐damaging agents. We previously reported a series of pyrazolopyrimidinones based on AZD1775, a known WEE1 inhibitor, as an initial investigation into the structural requirements for WEE1 inhibition. Our lead inhibitor demonstrated WEE1 inhibition in the same nanomolar range as AZD1775, and potentiated the effects of cisplatin in medulloblastoma cells, but had reduced single‐agent cytotoxicity. These results prompted the development of a more comprehensive series of WEE1 inhibitors. Herein we report a series of pyrazolopyrimidinones and identify a more potent WEE1 inhibitor than AZD1775 and additional compounds that demonstrate that WEE1 inhibition can be achieved with reduced single‐agent cytotoxicity. These studies support that WEE1 inhibition can be uncoupled from the potent cytotoxic effects observed with AZD1775, and this may have important ramifications in the clinical setting where WEE1 inhibitors are used as chemosensitizers for DNA‐targeted chemotherapy.
中文翻译：
具有有限的单剂细胞毒性的有效的基于吡唑并嘧啶酮的WEE1抑制剂的开发，用于癌症治疗
WEE1激酶调节G 2/ M细胞周期检查点，这是癌细胞中DNA修复的重要机制，可以赋予对DNA破坏剂的抗性。我们先前报道了一系列基于AZD1775（已知的WEE1抑制剂）的吡唑并吡喃二酮，作为对WEE1抑制作用的结构要求的初步研究。我们的先导抑制剂在与AZD1775相同的纳摩尔范围内表现出对WEE1的抑制作用，并增强了顺铂在髓母细胞瘤细胞中的作用，但降低了单药的细胞毒性。这些结果促使开发了更全面的WEE1抑制剂系列。在本文中，我们报告了一系列吡唑并嘧啶酮，并确定了比AZD1775更有效的WEE1抑制剂和其他化合物，这些化合物证明可以通过降低单药细胞毒性来实现WEE1抑制。
更新日期：2018-07-11
中文翻译：
具有有限的单剂细胞毒性的有效的基于吡唑并嘧啶酮的WEE1抑制剂的开发，用于癌症治疗
WEE1激酶调节G 2/ M细胞周期检查点，这是癌细胞中DNA修复的重要机制，可以赋予对DNA破坏剂的抗性。我们先前报道了一系列基于AZD1775（已知的WEE1抑制剂）的吡唑并吡喃二酮，作为对WEE1抑制作用的结构要求的初步研究。我们的先导抑制剂在与AZD1775相同的纳摩尔范围内表现出对WEE1的抑制作用，并增强了顺铂在髓母细胞瘤细胞中的作用，但降低了单药的细胞毒性。这些结果促使开发了更全面的WEE1抑制剂系列。在本文中，我们报告了一系列吡唑并嘧啶酮，并确定了比AZD1775更有效的WEE1抑制剂和其他化合物，这些化合物证明可以通过降低单药细胞毒性来实现WEE1抑制。
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