晨间信号Morning Signal
《科学》 第391卷 第6782期 · 2026年1月15日 · 中文解读

巨噬细胞MR1抗原呈递促进MAIT细胞免疫与肺部微生物群调节

Macrophage MR1 antigen presentation promotes MAIT cell immunity and lung microbiota modulation · J. Deng et al.
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这篇讲什么
该研究揭示了巨噬细胞是MR1抗原呈递的关键细胞,通过呈递维生素B衍生抗原激活MAIT细胞,并调节肺部微生物群组成。
原文开头
Full article and list of author affiliations: https://doi.org/10.1126/ science.adr6322 Jieru Deng† and Yuting Yan† et al. INTRODUCTION: The immune system consists of cells that detect microorganisms with varying degrees of selectivity. Many cell types react against components found in most viruses or bacteria, whereas only a few among a huge number of T and B lymphocytes react against a specific fragment of an individual pathogen. Mucosal associated invariant T cells (MAIT cells) sit between these extremes. They are abundant but highly specific for vitamin B–derived antigens (VitBAg), small molecules produced only by bacteria and fungi. VitBAg detection enables MAIT cells to “sense” and interact with the healthy microbiome and to respond against pathogens. …
摘自《科学》(Science)第391卷 第6782期 · 2026年1月15日,J. Deng et al.。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。
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