利用染色体包装域来准体内化学逃避体内
Jane Frederick1,2,3, Ranya K A Virk1,2,3,4, I Chae Ye1,2,3
1Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA.
bioRxiv : the preprint server for biology
|November 28, 2024
概括
癌细胞通过改变染色质结构来适应化疗. 新的转录性可塑性调节器 (TPR) 针对这些变化,提高了癌症治疗的有效性.
科学领域:
- 细胞生物学 细胞生物学
- 基因组学就是基因组学.
- 生物物理学的生物物理.
背景情况:
- 癌细胞通过转录变化和染色质结构改变适应细胞毒性压力.
- 表观遗传修饰和拓关联域 (TADs) 的重组与癌细胞适应有关.
- 控制染色体架构在癌症适应性中的作用的原则尚未完全理解.
研究的目的:
- 研究染色体组织在癌细胞适应化疗中的作用.
- 开发一种基于物理学的模型,将染色质结构与化疗后的细胞命运决定联系起来.
- 确定针对染色体可塑性的新型治疗策略,以改善癌症治疗.
主要方法:
- 开发了一种基于物理的染色质组织和细胞命运的机械模型.
- 通过体外实验验验证了模型对化疗回避的预测.
- 进行活细胞染色体成像化合物选,以识别转录性可塑性调节器 (TPR).
- 在患者衍生异种移植 (PDX) 卵巢癌模型中测试了已识别的TPR的疗效.
主要成果:
- 该模型在体外准确地预测了癌细胞化学逃避,将包装领域的变化与生存概率联系起来.
- 跨多种癌症类型的结果表明该模型捕捉了染色质介导适应的基本原则.
- 一个复合屏幕确定了几个TPRs,这些TPRs协同增强了化疗诱导的癌细胞死亡.
- 最有效的TPR在卵巢癌PDX模型中显著改善了治疗结果.
结论:
- 染色体结构在癌细胞适应细胞毒性压力的过程中起着中心作用.
- 用TPRs调节色素包装域,为克服癌症治疗抵抗性提供了一种新的策略.
- 这一框架通过向染色体可塑性,为增强各种癌症疗法提供了广泛的潜力.
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