1339-慢性压力驱动的瘤内噬菌体-成纤维细胞-B细胞促癌回路 episode artwork

EPISODE · Jul 26, 2026 · 23 MIN

1339-慢性压力驱动的瘤内噬菌体-成纤维细胞-B细胞促癌回路

from 聊聊Sci

这项研究揭示了慢性压力如何通过一种复杂的“噬菌体-成纤维细胞-B细胞”轴来削弱抗肿瘤免疫并加速癌症进展。长期压力会破坏肠道屏障,使特定的肠道病原菌(如Enterococcus gallinarum)发生易位并进入肿瘤内部。在肿瘤微环境中,这些细菌释放的噬菌体DNA通过TLR9受体激活肿瘤相关成纤维细胞,诱导其产生局部糖皮质激素。这种局部高水平的激素会直接抑制肿瘤内的生发中心B细胞反应,导致抗肿瘤抗体减少,从而形成有利于肿瘤生长的环境。研究进一步指出,通过靶向肠道细菌或阻断TLR9信号通路,可以恢复免疫系统对肿瘤的杀伤能力。该发现不仅在小鼠模型中得到证实,在人类结直肠癌和脑肿瘤样本中也发现了类似的机制证据。References:Bashir H, Sanidad K Z, Ravisankar P, et al. Chronic stress unleashes an intratumor phage-fibroblast-B cell circuit to promote tumor growth[J]. Cancer Cell, 2026.前往小宇宙评论区与主播互动

Episode metadata supplied by the publisher feed · Published Jul 26, 2026

Embed this episode

NOW PLAYING

1339-慢性压力驱动的瘤内噬菌体-成纤维细胞-B细胞促癌回路

0:00 23:11

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 23 minutes long.

When was this 聊聊Sci episode published?

This episode was published on July 26, 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!