通过PAF1介导的转录重编程在晚期前列腺癌中赋予了多塞塔克塞尔耐药性
Sakthivel Muniyan1, Raghupathy Vengoji1, Rama Krishna Nimmakayala1
1Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
Cancer letters
|November 27, 2024
概括
前列腺癌 (PCa) 通常会对多塞素化疗产生耐药性. 这项研究表明,PAF1蛋白 (Paf1/RNA聚合酶II复合体成分) 通过调节癌症干细胞特征来驱动这种抵抗.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 晚期前列腺癌 (PCa) 是一个重大的临床挑战.
- 多塞塔克塞尔是关键的化疗,但耐药性经常出现.
- 癌症干细胞 (CSC) 调节器在多塞素耐药性的作用尚未完全理解.
研究的目的:
- 调查Paf1/RNA聚合酶II复合元件 (PAF1) 在前列腺癌中多塞素耐药性的作用.
- 阐明PAF1介导的多塞素耐药性背后的分子机制.
- 探索PAF1对癌症干细胞特性和药物敏感性的功能影响.
主要方法:
- 在体外PCa细胞模型的开发.
- 转录组分析以确定多塞素耐药性的关键因素.
- 同免疫沉和胚胎干细胞网络蛋白质的分析.
- 功能性检测包括体外瘤启动能力和3D多细胞有机体生长.
- 在功能性研究中使用了可诱导酸的PAF1倒置细胞.
主要成果:
- 在PCa细胞系,瘤组织和耐多素 (DR) PCa细胞中,PAF1的表达显著升高.
- 在DRPCa细胞中PAF1的枯竭减少了药物流量,瘤发起频率和3D有机体生长.
- 在PAF1耗尽后的3D瘤球模型中观察到多塞塔克塞尔灵敏度的恢复.
- PAF1 衰竭与多能转录因子 (TF) 和其他 CSC 标记物减少相关.
结论:
- 在前列腺癌中,PAF1充当了多塞塔克塞尔耐药性的关键调节者.
- 通过涉及癌症干细胞特征和药物流动的机制,PAF1促进了多塞素耐药性.
- 向PAF1可能是一个新的治疗策略,以克服PCa中的多塞素耐药性.
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