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在急性淋巴细胞白血病中增强剂异质性驱动患者的差异性基因表达

Alastair Smith¹, Nicholas David Robert Denny², Catherine Chahrour²

¹University of Oxford, United Kingdom.

|July 29, 2025

概括

新型增强剂活性驱动急性淋巴细胞白血病 (ALL) 的基因表达差异. 这种增强剂异质性可能解释了为什么具有相同突变的癌症对治疗的反应不同.

科学领域:

* 基因组学和分子生物学
* 癌症研究癌症研究
* 表观遗传学是一种表观遗传学.

背景情况:

*仅仅基因突变并不能完全解释癌细胞多样性或治疗反应的多样性.
*即使在具有相同驱动突变的癌症中也观察到转录异质性.
* 驱动癌症异质性的机制尚未得到充分理解.

研究的目的:

* 调查新型增强剂在急性淋巴细胞白血病 (ALL) 异质性中的作用.
* 为了确定KMT2A::AFF1 ALL中转录异质性的驱动因素.
* 探索患者特异性KMT2A::AFF1 ALL样本中关键瘤基因的增强剂活性.

主要方法:

* 单细胞多组分析
* 染色体概况分析
*从初级患者样本生成高分辨率微捕获-C数据.

主要成果:

*新增增强剂的使用是KMT2A::AFF1 ALL.的一个常见特征.
*KMT2A::AFF1 ALL的转录异质性主要是由新增增强剂的使用驱动的.
*确定了MEIS1和RUNX2瘤基因的患者特异性增强剂活性,导致基因表达变化.

结论:

*增强剂异质性在KMT2A::AFF1 ALL中普遍存在.
* 新型增强剂的使用是促进这种白血病亚型的转录异质性的关键机制.
*增强器异质性可能是驱动癌症转录多样性的一般机制.

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