Nat Genet:结直肠癌早期转移的定量证据

2019-06-19 海北 MedSci原创

至今为止,关于肿瘤转移的时间和分子决定因素都是未知的,这阻碍了治疗和预防工作。

至今为止,关于肿瘤转移的时间和分子决定因素都是未知的,这阻碍了治疗和预防工作。

最近,研究人员通过分析来自23例直肠癌转移到肝脏或脑部的患者的118个活组织检查的外显子组测序数据,描述了这种致命过程的进化动力学。

数据显示,原发性肿瘤与转移之间的基因组差异较小,并且早期获得了经典驱动基因。空间肿瘤生长模型和统计推断框架内的分析表明,早期播散的细胞通常(81%,21个可评估患者中的17个)是种子转移,而这些肿瘤是临床检测不到的(通常小于0.01 cm3)。

研究人员验证了2,751例结肠直肠癌的独立队列中早期驱动与转移之间的关联,证明了它们作为转移生物标志物的效用。

这种概念和分析框架提供了定量的体内证据,证明系统性扩散可以在结肠直肠癌的早期发生,并阐明了患者分层和肿瘤发生的规范驱动因素的治疗靶向的策略。


原始出处:

Hu Z et al. Quantitative evidence for early metastatic seeding in colorectal cancer. Nat Genet, 2019; doi: 10.1038/s41588-019-0423-x.


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    2019-12-21 canlab
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