421-凋亡细胞身份决定巨噬细胞功能多样性 episode artwork

EPISODE · Jan 23, 2026 · 18 MIN

421-凋亡细胞身份决定巨噬细胞功能多样性

from 聊聊Sci

这项研究揭示了巨噬细胞在摄取不同谱系的凋亡细胞后,会根据其身份产生功能分化。研究发现,在IL-4环境下,吞噬凋亡中性粒细胞会诱导巨噬细胞产生组织修复特征,而吞噬凋亡肝细胞则促使巨噬细胞转向免疫耐受表型。实验证明,这一过程依赖于特定的吞噬受体,如 AXL 和 MERTK,它们通过选择性识别凋亡细胞来调控巨噬细胞的转录图谱。在血吸虫病等感染模型中,这种基于凋亡细胞身份的重编程显著影响了寄生虫卵清除和组织损伤的修复。该发现强调了凋亡细胞不仅是代谢垃圾,更是调节先天免疫多样性的关键信号来源。这些结论为开发针对炎症和纤维化疾病的巨噬细胞细胞疗法提供了新的理论支持。References: Imke Liebold et al. Apoptotic cell identity induces distinct functional responses to IL-4 in efferocytic macrophages.Science384,eabo7027(2024).DOI:10.1126/science.abo7027前往小宇宙评论区与主播互动

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421-凋亡细胞身份决定巨噬细胞功能多样性

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