New Inhibitors of Breast Cancer Resistance Protein (ABCG2) Containing a 2,4-Disubstituted Pyridopyrimidine Scaffold,Journal of Medicinal Chemistry

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New Inhibitors of Breast Cancer Resistance Protein (ABCG2) Containing a 2,4-Disubstituted Pyridopyrimidine Scaffold
Journal of Medicinal Chemistry ( IF 6.8 ) Pub Date : 2018-03-16 00:00:00 , DOI: 10.1021/acs.jmedchem.7b01012
Michael K. Krapf ₁ , Jennifer Gallus ₁ , Sahel Vahdati ₁ , Michael Wiese ₁

Affiliation

Multidrug resistance (MDR) occurring during cancer chemotherapy is a major obstacle for effectiveness and response to therapy and is often caused by ATP-binding cassette (ABC) efflux transporters. Belonging to the family of ABC transporters, breast cancer resistance protein is getting more and more in the spotlight of research. As a strategy to overcome MDR, inhibitors of ABC transporters were synthesized, which could be applied in combination with cytostatic drugs. For this purpose, 2,4-disubstituted pyridopyrimidine derivatives were synthesized. The investigations confirmed three key characteristics of good inhibitors: a low intrinsic cytotoxicity and a high potency and selectivity toward ABCG2. For selected compounds the interaction with ABCG2 was elucidated and their effect on ATPase activity and conformation sensitive 5D3 antibody binding was investigated. Their ability to reverse MDR in coadministration with the active metabolite of irinotecan and mitoxantron was confirmed.

中文翻译：

包含2,4-二取代的吡啶并嘧啶骨架的乳腺癌抗性蛋白（ABCG2）的新抑制剂

在癌症化疗期间发生的多药耐药性（MDR）是影响疗效和对治疗产生反应的主要障碍，并且通常由ATP结合盒（ABC）外排转运蛋白引起。属于ABC转运蛋白家族的乳腺癌抗性蛋白越来越受到研究的关注。作为克服MDR的策略，合成了ABC转运蛋白抑制剂，可与抑制细胞生长的药物联合使用。为此目的，合成了2，4-二取代的吡啶并嘧啶衍生物。研究证实了良好抑制剂的三个关键特征：低内在的细胞毒性以及对ABCG2的高效力和选择性。对于选定的化合物，阐明了与ABCG2的相互作用，并研究了它们对ATPase活性和构象敏感性5D3抗体结合的影响。与伊立替康和米托蒽醌的活性代谢产物合用时，它们具有逆转MDR的能力。

更新日期：2018-03-16

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