631-化疗诱导的LEPR+库普弗细胞促使肝转移瘤免疫逃逸 episode artwork

EPISODE · Mar 13, 2026 · 22 MIN

631-化疗诱导的LEPR+库普弗细胞促使肝转移瘤免疫逃逸

from 聊聊Sci

这项研究揭示了化疗在肝转移癌治疗中的一种负面免疫效应:化疗会诱导肿瘤细胞释放 cGAMP,进而通过 STING-ID1 信号通路驱使肝脏驻留的**库普弗细胞(KCs)**重编程为 LEPR+ 亚型。与传统的库普弗细胞不同,这种 LEPR+ 细胞会深入渗透进肿瘤组织,并通过 MerTK 介导的胞葬作用清除化疗产生的免疫原性细胞死亡信号。这种机制有效地帮助肿瘤逃避免疫监视,从而导致治疗后的免疫抑制和癌症复发。研究者发现,通过联用 MerTK 抑制剂和 PD-L1 抗体,可以阻断这一逃逸路径。这种组合疗法能显著增强抗肿瘤免疫力,为克服肝转移癌的化疗耐药性提供了新的治疗策略。该成果强调了在癌症治疗中通过干预免疫细胞可塑性来优化临床疗效的重要性。References: Wang X, Pan Q, Li Y, et al. Chemotherapy triggers immune evasion by fostering LEPR+ Kupffer cell differentiation in liver metastases[J]. Cancer Cell, 2026.前往小宇宙评论区与主播互动

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631-化疗诱导的LEPR+库普弗细胞促使肝转移瘤免疫逃逸

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