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多焦点肝细胞癌中的基因组和瘤微环境异质性

Yongheng Yang¹, Qingqiang Ni², Hongguang Li²

¹Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.

Hepatology (Baltimore, Md.)

|December 12, 2024

概括

这项研究揭示了多焦点肝细胞癌 (HCC) 亚型,肝内转移 (IM) 和多中心发生 (MO) 中不同的瘤微环境. 了解HCC中的这些差异是改善诊断和治疗的关键.

科学领域:

在瘤学瘤学.
免疫学免疫学免疫学
基因组学就是基因组学.

背景情况:

多焦点肝细胞癌 (HCC) 由于瘤微环境 (TME) 的模两可,给诊断和治疗带来了挑战.
肝脏内转移 (IM) 和多中心发生 (MO) 代表了HCC传播的不同模式,具有潜在不同的TME特征.

研究的目的:

在使用单细胞分辨率的多焦性HCC中描述和比较IM和MO的TMEs.
确定可能影响诊断和治疗策略的关键细胞和分子差异.

主要方法:

并行全外体序列测序 (WES) 和单细胞RNA序列测序 (scRNA-seq) 在7名HCC患者的23个样本上进行.
免疫组织化学被用于额外患者队列的验证.
对WES和scRNA-seq数据进行综合分析,以分析TME.

主要成果:

与MO相比,IM中的恶性细胞表现出更高的内异质性,干性和代谢活性.
IM瘤共享类似的TME,而MO瘤显示出不同的TME.
与MO相比,IM显示CD20+B细胞,血细胞和cDC2s的减少,以及更多的终极耗尽的T细胞.
CD20和CD1C表达与多焦点HCC的更好的预后相关.
瘤相关的MMP9+巨细胞在IM和MO中都被丰富,形成了与调节性T细胞和耗尽的T细胞的.

结论:

该研究提供了在多焦性HCC中IM和MO之间的异质TMEs的深入解密.
这些发现提供了多焦点HCC的全面景观,有助于理解其复杂性.

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