特定于细胞类型的瘤敏感性与形腺素向PROTAC在腺囊性癌症中被确定
Alexandra J Rose1, Mercedes M Fleming1, Jeffrey C Francis1
1Division of Cancer Biology, Institute of Cancer Research, London, UK.
The Journal of pathology
|October 4, 2023
概括
腺囊性癌 (ACC) 的新临床前模型显示,原体降解剂dBET6有效向癌细胞. 这种疗法对特定的细胞群产生影响,为治疗这种罕见的癌症提供了新的途径.
科学领域:
- 在瘤学瘤学.
- 癌症生物学 癌症生物学
- 药物发现 药物发现 药物发现
背景情况:
- 唾液腺腺囊性癌 (ACC) 是一种罕见的癌症,治疗选择很少,因缺乏有效的临床前模型而受到限制.
- 现有的模型往往无法捕捉到遗传复杂性,例如MYB::NFIB转位,对于ACC发展至关重要.
研究的目的:
- 开发和描述新的患者衍生异种移植 (PDX) 和器官模型,用于ACC.
- 在临床前的ACC模型中评估原体降解剂dBET6的疗效.
- 阐明dBET6在ACC中的作用机制.
主要方法:
- 产生ACC患者衍生异种移植 (PDX) 和2D/3D有机体模型.
- 在开发模型中评估MYB表达和遗传转位.
- 在体外和体外使用 dBET6.6 的药物敏感性测试.
- 对蛋白质水平 (BRD4,MYB) 和基因表达的分子分析.
- 评估细胞类型组成的变化,以应对治疗.
主要成果:
- 开发了ACC PDX和有机体模型,准确地反映了主要瘤特征,包括MYB:: NFIB转位.
- 在体外和体内证明ACC细胞对dBET6.6的敏感性.
- 在dBET6治疗后观察到BRD4和MYB蛋白水平的降低和基因表达的降低.
- 在用dBET6.6治疗的瘤中,确定了肌上皮和导管细胞群中的显著变化.
- 表明dBET6抑制了原生细胞功能,特别是在肌皮细胞群中.
结论:
- 建立了新的ACC临床前模型 (PDX和器官),保留了关键的遗传特征.
- 原体降解剂dBET6显示出针对ACC的显著治疗潜力.
- dBET6通过降低MYB和BRD4水平并特别抑制原生细胞功能,特别是在肌皮细胞中发挥作用.
- 针对肌上皮和导管细胞种群可能对有效的ACC治疗至关重要.
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