1432-RNASEH2C调控巨噬细胞抗原提呈与肝癌进展 episode artwork

EPISODE · Aug 14, 2026 · 21 MIN

1432-RNASEH2C调控巨噬细胞抗原提呈与肝癌进展

from 聊聊Sci

这份研究揭示了 RNASEH2C 蛋白在肝癌免疫逃逸中的核心机制。研究发现,这种蛋白在特定巨噬细胞中通过抑制 R-loop 形成来促进 TRAF3IP1 的表达,进而下调 mTOR 通路并诱发细胞骨架蛋白 RAI14 的溶酶体降解。由于 RAI14 的缺失阻碍了巨噬细胞对肿瘤抗原的胞饮作用与呈递,导致抗肿瘤免疫反应减弱并加速了癌症进展。此外,研究证实 HSC70 与 CMTM6 在 RAI14 的降解过程中发挥着关键的竞争性调节作用。最终,该研究表明抑制巨噬细胞中的 RNASEH2C 能有效增强免疫检查点抑制剂的疗效,为肝癌免疫治疗提供了新靶点。References:Pan B, Yu H, Lin Z, et al. RNASEH2C enhances TRAF3IP1 to degrade RAI14 in lysosomes thus hindering macrophage antigen presentation and advancing liver cancer[J]. Cell Death & Disease, 2025, 17(1): 92.前往小宇宙评论区与主播互动

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1432-RNASEH2C调控巨噬细胞抗原提呈与肝癌进展

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