MYC and HSF1 Cooperate to Drive Sensitivity to Polo-like Kinase 1 Inhibitor Volasertib in High-grade Serous Ovarian Cancer.

IF 2 Q3 ONCOLOGY
Imade Williams, Matthew O'Malley, Haddie DeHart, Bobby Walker, Vrushabh Ulhaskumar, Pranav Jothirajah, Haimanti Ray, Lisa M Landrum, Joe R Delaney, Kenneth P Nephew, Richard L Carpenter
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Abstract

Significance: We show that HSF1 and MYC genes are co-amplified in more than 30% of HGSOC and demonstrate that HSF1 and MYC functionally cooperate to drive the growth of HGSOC cells. This work provides the foundation for HSF1 and MYC co-amplification as a biomarker for treatment efficacy of the polo-like kinase 1 inhibitor volasertib in HGSOC.

MYC和HSF1合作驱动高级别浆液性卵巢癌对polo样激酶1抑制剂Volasertib的敏感性
卵巢癌是一种易复发的致命妇科疾病。目前对患者的治疗包括铂基治疗方案和PARP抑制剂特异性治疗hr缺陷高级别浆液性卵巢癌(hgsoc)。尽管最初有效,但由于肿瘤细胞获得耐药性,患者不可避免地会出现疾病进展。为了开发新的治疗途径,我们描述了一种涉及HSF1和MYC的基因扩增,其中这两个基因在超过30%的HGSCO患者中共同扩增。我们进一步发现HSF1和MYC转录活性在人类HGSOC肿瘤和细胞系中高度相关,提示它们可能在疾病中协同作用。HSF1和MYC的CUT&RUN显示HSF1和MYC在整个基因组中有重叠结合。此外,两种转录因子在HGSOC细胞中的结合峰几乎相同,并且检测到HSF1和MYC之间的蛋白-蛋白相互作用,支持分子合作。支持这两个转录因子的功能合作,HGSOC细胞的生长依赖于HSF1和MYC。为了确定可以利用这种独特的HSF1和MYC依赖性的治疗靶点,在HGSOC标本中,polo样激酶1 (PLK1)与HSF1和MYC相关。用volasertib靶向PLK1显示,与具有野生型HSF1和MYC拷贝数的细胞相比,HSF1-MYC共扩增的HGSOC细胞的效力增加了200倍以上。尽管volasertib和其他PLK1抑制剂在临床试验中的成功程度并不高,但目前的研究表明,利用HSF1-MYC共扩增作为HGSOC的生物标志物,在精准医学方法中靶向PLK1。
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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