The Selective WEE1 Inhibitor Azenosertib Shows Synergistic Antitumor Activity with KRASG12C Inhibitors in Preclinical Models.

IF 2 Q3 ONCOLOGY
Nathan M Jameson, Daehwan Kim, Catherine Lee, Blake Skrable, Alexandra Shea, Xiao Guo, Hooman Izadi, Mona Abed, Olivier Harismendy, Jianhui Ma, Doris S Kim, Mark R Lackner
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Abstract

Significance: Resistance to KRASG12C inhibitors is a growing clinical concern. The synergistic interaction observed between azenosertib and multiple KRASG12C inhibitors could result in deeper and more durable responses.

选择性WEE1抑制剂Azenosertib在临床前模型中与KRASG12C抑制剂显示协同抗肿瘤活性
KRAS是一种强有力的致癌驱动因子,可导致下游MAPK信号的过度激活,同时增加复制应激(RS)和DNA损伤的积累。KRASG12C突变是常见且可靶向的改变。KRASG12C的治疗性抑制和最终对这些抑制剂的耐药性也通过维持对高MAPK信号的依赖性的适应性机制驱动RS和DNA损伤。高水平的RS导致对细胞周期检查点的依赖性更强,从而引入了细胞周期检查点调节因子(如WEE1激酶)抑制的脆弱性。这为azenosertib(一种新型的、选择性的、口服生物可利用的WEE1抑制剂)与KRASG12C抑制剂联合使用提供了理论依据。azenosertib与多种KRASG12C抑制剂的体外联合在2D和3D分析中显示出KRASG12C细胞系的协同细胞生长抑制作用。体内研究表明,azenosertib与KRASG12C抑制剂联合使用时,具有显著的单药活性和协同肿瘤生长抑制(TGI),包括NSCLC、CRC和PDAC的CDX模型中的肿瘤消退。重要的是,KRASG12C抑制剂耐药的CDX和PDX模型在联合臂中显示出协同TGI。最后,体外和体内肿瘤样本的生物标志物分析显示,联合治疗后RS、DNA损伤和细胞凋亡的蛋白质标志物增加。综上所述,我们的研究结果表明azenosertib与KRASG12C抑制剂联合使用比单药治疗更能增强肿瘤生长抑制,可能是KRASG12C肿瘤患者的有效治疗策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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