426-树突状细胞调控淋巴结先天与获得性免疫平衡 episode artwork

EPISODE · Jan 24, 2026 · 15 MIN

426-树突状细胞调控淋巴结先天与获得性免疫平衡

from 聊聊Sci

这项研究揭示了树突状细胞 (DCs) 在淋巴结中作为“流变仪”的新功能,用于动态调节先天免疫与适应性免疫之间的平衡。在感染初期,淋巴结驻留的树突状细胞会分泌趋化因子并表达黏附分子 ICAM-1,从而引导中性粒细胞、单核细胞和NK细胞快速向炎症部位聚集。虽然这种大规模的先天免疫细胞浸润对于遏制病原体扩散至关重要,但过度的炎症反应会暂时破坏淋巴结结构,并挤压T细胞的生存空间,从而抑制早期的适应性免疫。随着威胁消减,树突状细胞及其招募的单核细胞会通过胞葬作用清除凋亡的中性粒细胞,从而修复组织架构并恢复适应性免疫功能。这一过程证明了树突状细胞不仅是抗原递呈细胞,更是协调宿主防御策略、确保免疫响应在不同阶段高效衔接的关键枢纽。References: Huang J Y, Gerner M Y. Dendritic cells regulate the innate-adaptive balance in lymph nodes for optimal host defense[J]. Cell, 2025.前往小宇宙评论区与主播互动

Episode metadata supplied by the publisher feed · Published Jan 24, 2026

Embed this episode

Ready to play

426-树突状细胞调控淋巴结先天与获得性免疫平衡

0:00 15:38

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.

No similar episodes found.

Frequently Asked Questions

How long is this episode of 聊聊Sci?

This episode is 15 minutes long.

When was this 聊聊Sci episode published?

This episode was published on January 24, 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!