与瘤相关的SPP1+巨细胞定义了一个高风险子组,并为肝细胞癌的个性化治疗提供信息
Wei-Xuan Xu1, Ya-Mei Ye2, Jia-Lin Chen1
1Department of Oncology, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, Fujian, China.
Frontiers in oncology
|July 16, 2025
概括
这项研究重新定义了肝细胞癌 (HCC) 中的瘤相关巨细胞 (TAM) 异质性,确定了与患者预后相关的独特的TAM子集,并指导了向治疗. 阻断SPP1提供了一种克服HCC免疫抑制的策略.
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:
- 瘤微环境 (TME),特别是与瘤相关的巨细胞 (TAMs),在肝细胞癌 (HCC) 进展中发挥着关键作用.
- 了解TAM异质性对于开发有效的HCC疗法至关重要,但目前的分类是有限的.
研究的目的:
- 建立基于单细胞RNA测序 (scRNA-seq) 数据的HCC新型TAM分类系统.
- 确定不同的TAM子集及其在HCC中的临床和治疗影响.
- 探索潜在的治疗策略,针对HCC中特定的TAM集群.
主要方法:
- 综合scRNA-seq和大量RNA-seq数据来自HCC患者.
- 开发了一个使用SPP1和FOLR2签名的TAM分类系统.
- 进行无监督的集群,轨迹分析和生存分析.
- 评估了免疫细胞透,基因组变异和药物敏感性.
主要成果:
- 根据轨迹基因,分层化HCC成三个不同的TAM集群 (C1,C2,C3).
- 集群3 (C3) 呈现出不良预后,代谢失调和免疫抑制,SPP1被确定为抑制CD8+T细胞透的关键特征.
- 确定了每个群体的独特药物敏感性,C3对化疗和氨酸激酶抑制剂有反应,C1/C2对免疫治疗有反应.
结论:
- 在超越M1/M2范式的HCC中重新定义TAM异质性,将TAM与患者分层联系起来.
- 阻断SPP1是一种潜在的策略,可以抵消TAM介导的HCC免疫抑制.
- 集群特异性疗法可以优化HCC管理,改善患者的治疗结果.
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