516-巨噬细胞介导的MR1抗原呈递与MAIT细胞免疫

这项研究揭示了巨噬细胞在免疫系统中作为MR1抗原呈递细胞的核心地位，填补了长期以来关于MAIT细胞激活机制的知识空白。通过构建创新的荧光报告基因小鼠模型，研究人员发现肺部和腹腔内的组织驻留巨噬细胞表达最高水平的MR1蛋白，且捕捉维生素B衍生抗原的效率远超其他免疫细胞。实验进一步证明，MR1的表达受局部组织环境和微生物群信号的共同调节，并依赖于Toll样受体信号通路。当巨噬细胞缺乏MR1时，小鼠不仅肺部菌群构成发生改变，且对细菌感染的免疫应答出现显著缺陷。该成果明确了巨噬细胞在维持微生物稳态和抗感染免疫中的关键作用，并为针对MAIT细胞的免疫治疗策略提供了重要靶点。这一发现不仅深化了对黏膜免疫的理解，也为治疗自体免疫疾病和开发新型疫苗奠定了理论基础。References: Deng J, Yan Y, Zhang X, et al. Macrophage MR1 antigen presentation promotes MAIT cell immunity and lung microbiota modulation[J]. Science, 2025, 391(6782): eadr6322.前往小宇宙评论区与主播互动

Episode metadata supplied by the publisher feed · Published Feb 18, 2026

Embed this episode

Attribution link and audio player

Ready to play

516-巨噬细胞介导的MR1抗原呈递与MAIT细胞免疫

0:00 16:02

1×

No transcript for this episode yet

We transcribe on demand. Request one and we'll notify you when it's ready — usually under 10 minutes.

Share this episode

Similar Episodes

No similar episodes found.

Similar Podcasts

Forfeiture Book Review: Ecocide and Sci-Fi JP et al. A whizz bang review of the complex themes in the new ecological Sci-Fi novel, FORFEITURE by JP Nebra Deep Dream State Neural Nets And Pretty Patterns Deep Dream State is a full-cast dystopian sci-fi and desire horror audio drama by Neural Nets and Pretty Patterns. As the originating work of desire horror, it locates the uncanny inside wanting itself. While conventional horror positions you against a threat, desire horror implicates you in it. The horror emerges from recognition: the realization of why characters stay, and why surrender feels like relief. Since 2017, the show has used research in dream science, surveillance studies, behavioral economics, and advertising technology to examine systems of control through immersive sound design and full-cast performance.

Frequently Asked Questions

How long is this episode of 聊聊Sci?

This episode is 16 minutes long.

When was this 聊聊Sci episode published?

This episode was published on February 18, 2026.

Can I download this 聊聊Sci episode?

Yes. Use the download control on the episode player to save the publisher-provided media file.

URL copied to clipboard!