Discovery of [1,2,4]triazolo[4,3-a]pyridines as potent Smoothened inhibitors targeting the Hedgehog pathway with improved antitumor activity in vivo
作者:Nannan Tian、Huanxian Wu、Huiwu Zhang、Danni Yang、Lin Lv、Zichao Yang、Tingting Zhang、Dongling Quan、Lei Zhou、Ying Xie、Yimei Xu、Ning Wei、Jiajie Zhang、Mian Chen、John C. Schmitz、Yuanxin Tian、Shaoyu Wu
DOI:10.1016/j.bmc.2020.115584
日期:2020.8
application of Smo inhibitors is limited to adult patients with BCC and AML, with many side effects. Therefore, it’s necessary to develop novel Smo inhibitor with better profiles. Twenty [1,2,4]triazolo[4,3-a]pyridines were designed, synthesized and screened as Smo inhibitors. Four of these novel compounds showed directly bound to Smo protein with stronger binding affinity than VIS. The new compounds
三阴性乳腺癌(TNBC)是乳腺癌的一个子集,其生存率较其他乳腺癌类型差。最近的研究表明,TNBC中激活了异常的Hedgehog(Hh)途径,这些对治疗有抵抗力的癌症对Hh途径的抑制敏感。平滑蛋白(Smo)是Hh信号中的重要组成部分,并且是有吸引力的药物靶标。Vismodegib(VIS)是研究最广泛的Smo抑制剂之一。但是,Smo抑制剂的临床应用仅限于成年BCC和AML患者,具有许多副作用。因此,有必要开发出性能更好的新型Smo抑制剂。二十[1,2,4]三唑[4,3- a对吡啶进行设计,合成和筛选,作为Smo抑制剂。这些新化合物中的四个显示与Smo蛋白直接结合,结合亲和力比VIS强。新化合物在体外对癌细胞系,尤其是三阴性乳腺癌细胞显示出广泛的抗增殖活性。机理研究表明,TPB15明显诱导MDA-MB-468细胞的细胞周期停滞和凋亡。TPB15阻止Smo易位到纤毛中,并降低Smo蛋白和mRNA