单细胞多组学将慢性炎症确定为TP53突变白血病进化的驱动因素
Alba Rodriguez-Meira1,2,3,4, Ruggiero Norfo5,6,7, Sean Wen5,6,8
1Haematopoietic Stem Cell Biology Laboratory, Medical Research Council Molecular Haematology Unit, Medical Research Council Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK. albarmeira@gmail.com.
Nature genetics
|September 4, 2023
概括
慢性炎症通过抑制健康细胞和促进癌症演变来促进TP53-突变白血病. 这一发现有助于开发TP53-突变性急性髓性白血病 (AML) 的新疗法.
科学领域:
- 血液学 血液学 血液学
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
背景情况:
- 理解瘤蛋白53 (TP53) 突变对于设计有效的癌症疗法至关重要.
- TP53突变驱动了各种癌症的克隆进化和转变,包括急性髓性白血病 (AML).
- 确定影响TP53-突变性白血病发生的遗传和非遗传因素是一个关键的研究领域.
研究的目的:
- 调查二次AML (sAML) 中TP53突变驱动的克隆演变的遗传和非遗传决定因素.
- 分析慢性炎症在TP53-突变型造血干细胞/原生细胞 (HSPCs) 健身优势中的作用.
- 基于对TP53突变白血病的演变理解,确定治疗策略.
主要方法:
- 来自转变为sAML的骨髓增殖性新生瘤患者的HSPCs的单细胞多基因分析.
- 对连续患者样本和体内扰动进行分析,以研究克隆动态.
- 对白血病干细胞转录特征的评估,以预测独立的AML队列中的结果.
主要成果:
- 在所有患者的转化过程中观察到主导的TP53"多击"HSPC克隆.
- 一个白血病干细胞的转录特征预测了TP53-突变和野生型 (WT) AML的不良结果.
- 慢性炎症被确定为抑制TP53 WT HSPCs的因素,并增强TP53-突变细胞的适应性,促进遗传进化.
结论:
- 慢性炎症通过改变HSPC适应性,在TP53-突变白血病的进展中发挥着重要作用.
- 这些发现提供了对TP53-突变sAML.克隆进化的机制的见解.
- 这项研究支持风险分层,早期检测和TP53突变白血病和其他癌症的新治疗策略的开发.
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