1575-腊样芽孢杆菌调控肝癌干性淋巴微环境增强免疫治疗响应 episode artwork

EPISODE · Sep 14, 2026 · 21 MIN

1575-腊样芽孢杆菌调控肝癌干性淋巴微环境增强免疫治疗响应

from 聊聊Sci

这篇文章研究了肝细胞癌中三级淋巴结构(TLS)的异质性,并鉴定出一种能预测免疫治疗效果的干性淋巴生态位(SLNs)。研究发现,这种生态位由CD70+ ILC2s和TCF1+ Tpex细胞共同构成,其丰度直接影响PD-1/PD-L1抑制剂的疗效。研究揭示,肠道来源的蜡样芽孢杆菌能易位至肿瘤,通过分泌PI-PLC诱导内皮细胞释放IL-33。这种细胞因子通过代谢与表观遗传重塑激活ILC2s,进而促进SLNs的形成。实验证明,将PI-PLC或rIL-33与免疫检查点阻断疗法联合使用,能显著增强抗肿瘤免疫反应。这一发现为提升肝癌免疫治疗的临床获益提供了新的治疗靶点和策略。References:Hu C, You W, Huang Y, et al. Intratumoral Bacillus cereus orchestrates stem-like lymphoid niches to potentiate immunotherapy response in hepatocellular carcinoma[J]. Cancer Cell, 2026.前往小宇宙评论区与主播互动

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1575-腊样芽孢杆菌调控肝癌干性淋巴微环境增强免疫治疗响应

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