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Synthesis and biological evaluation of (E)-4-(3-arylvinyl-1H-indazol-6-yl)pyrimidin-2-amine derivatives as PLK4 inhibitors for the treatment of breast cancer

机译:作为PLK4抑制剂的( E )-4-(3-芳基乙烯基-1 H -吲唑-6-基)嘧啶-2-胺衍生物的合成及生物学评价乳腺癌的治疗

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Polo-like kinase 4 (PLK4), a vital regulator of centriole duplication, is important for maintaining genome stability. Dysregulation of PLK4 has been found in several human cancers and is associated with a predisposition to tumorigenesis. Herein, we describe the discovery of (E)-4-(3-arylvinyl-1H-indazol-6-yl)pyrimidin-2-amine derivatives as potent PLK4 inhibitors with more concise structure using a scaffold hopping strategy. SAR exploration and preliminary assessment identified 14i as a new PLK4 inhibitor which displayed excellent potency in vitro. 14i could inhibit the activity of PLK4, perturb centriole replication, result in mitosis disorder and induce cell apoptosis in breast cancer cells. Moreover 14i demonstrated significant antitumor efficacy in the MDA-MB-468 and MDA-MB-231 xenograft models. This study suggested that this concise chemotype would represent a promising scaffold of PLK4 inhibitors for cancer therapy and 14i would be an attractive lead compound for further optimization and evaluation.
机译:Polo样激酶4(PLK4)是中心粒重复的重要调节剂,对于维持基因组稳定性非常重要。已经在几种人类癌症中发现了PLK4的失调,并且与肿瘤发生的易感性有关。在这里,我们描述了发现( E )-4-(3-芳基乙烯基-1 H -吲唑-6-基)嘧啶-2-胺衍生物作为有效PLK4的发现使用支架跳跃策略的抑制剂具有更简洁的结构。 SAR探索和初步评估确定14i为新型PLK4抑制剂,在体外显示出优异的效力。 14i可以抑制PLK4的活性,扰动中心细胞的复制,导致有丝分裂紊乱并诱导乳腺癌细胞凋亡。此外,14i在MDA-MB-468和MDA-MB-231异种移植模型中显示出显着的抗肿瘤功效。这项研究表明,这种简明的化学型将代表有希望的PLK4抑制剂用于癌症治疗的支架,而14i将是用于进一步优化和评估的有吸引力的先导化合物。

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