630-成纤维细胞脂质氧化重编程增强CD8+T细胞抗肿瘤免疫 episode artwork

EPISODE · Mar 12, 2026 · 20 MIN

630-成纤维细胞脂质氧化重编程增强CD8+T细胞抗肿瘤免疫

from 聊聊Sci

这项发表于《Cancer Cell》的研究通过对肌肉浸润性膀胱癌样本的单细胞测序,揭示了化疗诱导的一种新型基质细胞群:PTGER3+ 脂肪氧化型肿瘤相关成纤维细胞(lipoCAFs)。这类细胞受转录因子 MSX1 调控,能通过 CYP1B1 酶将花生四烯酸转化为代谢物 11-HETE,从而发挥抗肿瘤作用。研究表明,11-HETE 作为内源性配体抑制了 CD8+ T 细胞中的 PTEN 活性,进而激活 AKT/mTOR 通路并显著增强 T 细胞的杀伤力。临床数据显示,lipoCAF 的比例与患者更好的化疗预后及生存期密切相关。此外,补充 11-HETE 或花生四烯酸可产生协同效应,有望成为提升化疗与免疫治疗效率的新型策略。该发现改变了以往认为成纤维细胞仅促进肿瘤耐药的传统认知,为优化癌症微环境治疗方案提供了新思路。References: Ma Z, Wang Y, Wang W, et al. Lipid oxidation reprogramming in cancer-associated fibroblasts enhances CD8+ T cell cytotoxicity and therapeutic response[J]. Cancer Cell, 2026.前往小宇宙评论区与主播互动

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630-成纤维细胞脂质氧化重编程增强CD8+T细胞抗肿瘤免疫

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