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在临床层面上,DNA甲基化波动跟踪癌症的演变

Calum Gabbutt^1,2,3, Martí Duran-Ferrer^4,5, Heather E Grant⁶

¹Centre for Evolution and Cancer, Institute of Cancer Research, London, UK. c.gabbutt@imperial.ac.uk.

|September 10, 2025

概括

科学家开发了一种使用DNA甲基化的新方法, 这种方法量化瘤生长率和恶性瘤年龄, 提供了对癌症生物学和预后的新见解.

科学领域:

癌症学
基因组学
生物信息学

背景情况:

癌症的发展是一个进化过程,
分析癌症演变的现有方法往往复杂或范围有限.

研究的目的:

开发一种新的方法,EVOFLUX,以量化推断癌症的进化动态.
将EVOFLUX应用于大量的淋巴癌样本,以表征进化的异质性.
探索癌症进化动态的临床影响,包括预后.

主要方法:

开发使用自然DNA甲基化条形码的EVOFLUX方法.
应用EVOFLUX对1976个来自淋巴细胞癌的瘤甲基化概况.
特定癌症亚型的基因分析,包括里希特转化CLL.
使用遗传数据 (例如,纳米孔测序) 和临床变量进行正交验证.

主要成果:

根据甲基化数据,EVOFLUX可以量化推断瘤生长率,恶性瘤年龄和表皮化率.
在不同类型的淋巴癌中观察到进化参数的显著变化.
亚克隆选择是罕见的;偶尔检测到多个独立的初级瘤.
较快的初始瘤生长与侵袭性疾病亚型相关.
癌症进化史是慢性淋巴细胞白血病的重要独立预后因素.
EVOFLUX发现,在里希特转化CLL中转化克隆的起源可能比临床表现早几十年.

结论:

广泛获得的DNA甲基化数据可以使用EVOFLUX精确测量癌症的进化动态.
EVOFLUX为癌症生物学,异质性和临床行为提供了新的见解.
该方法为癌症进化研究和临床应用提供了低成本,可扩展的方法.

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