EPISODE · Jul 1, 2026 · 24 MIN
1215-线粒体DNA追踪：癌症先天免疫克隆动力学
from 聊聊Sci
本研究通过一种名为 Mitotrek 的新型计算框架，利用线粒体 DNA 突变作为天然条形码，成功追踪了人体癌症中先天免疫细胞的克隆演变。研究发现，肿瘤内3型树突状细胞（DC3）起源于血液中的单核细胞，而非传统认为的树突状细胞谱系。关键证据表明，这些免疫细胞在进入肿瘤组织之前，其未来的分化命运已在血液循环中被外周编程设定。虽然肿瘤环境会促进细胞最终完成分化，但单核细胞究竟会转变为巨噬细胞还是树突状细胞，主要取决于其预存的表观遗传状态。这一发现为理解免疫系统如何响应肿瘤提供了全新的视角，并为开发针对骨髓谱系的精准免疫疗法奠定了基础。References:Brivanlou A, Hacohen N. Attack of the clones: Tracing the dynamics of innate immune cells in human cancer[J]. Cancer Cell, 2026.前往小宇宙评论区与主播互动
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1215-线粒体DNA追踪：癌症先天免疫克隆动力学
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