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在高度卵巢癌中,Onvansertib治疗克服了olaparib耐药性
Michela Chiappa1, Alessandra Decio2, Luca Guarrera3
1Laboratory of Preclinical Gynecological Oncology, Experimental Oncology Department, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy.
Cell death & disease
|July 22, 2024
概括
将波罗样酶1 (PLK1) 抑制剂onvansertib与多基酸聚合酶抑制剂 (PARPi) olaparib结合起来,有望在卵巢癌中克服olaparib耐药性. 这种组合有效地抑制瘤生长,并在临床前模型中增加存活率.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 对像olaparib这样的多基基酶抑制剂 (PARPi) 的耐药性是卵巢癌的临床挑战.
- 波罗样酶1 (PLK1) 在DNA损伤修复和细胞循环调节中发挥作用,使其成为潜在的治疗点.
研究的目的:
- 在卵巢癌模型中研究联合onvansertib (PLK1抑制剂) 与olaparib的疗效,包括对olaparib耐药的卵巢癌模型.
- 为了确定PLK1抑制是否可以使瘤细胞对PARP抑制产生敏感性.
主要方法:
- 在BRCA1突变和野生类型卵巢癌模型中对onvansertib和olaparib组合进行体外和体内测试,包括患者衍生异种移植 (PDXs).
- 评估细胞周期进展,DNA损伤,细胞亡,瘤生长,生存和药理动力学标记.
主要成果:
- 这种组合表明了添加或协同效应,诱导G2/M细胞循环停止,DNA损伤和亡.
- 在体内,这种组合被耐受性良好,抑制了瘤生长,并增加了存活率,特别是在对olaparib耐药的模型中.
- 昂万塞蒂布抑制了DNA修复通路 (HR和NHEJ) 并减少了RAD51焦点,增强了olaparib的活性.
结论:
- 在临床前卵巢癌模型中,onvansertib和olaparib的组合有效,包括耐药的设置.
- 这种组合需要进一步进行卵巢癌治疗的临床研究,特别是在对PARPi.Pi耐药的患者中.
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