1054-棕榈酸诱导中性粒细胞重编程促进乳腺癌肺转移 episode artwork

EPISODE · May 30, 2026 · 23 MIN

1054-棕榈酸诱导中性粒细胞重编程促进乳腺癌肺转移

from 聊聊Sci

这项研究揭示了棕榈酸(PA)在三阴性乳腺癌(TNBC)向肺部转移过程中起到的关键媒介作用。研究发现,肺部的血管内皮细胞在肿瘤前期会大量合成并释放棕榈酸,进而诱导浸润的中性粒细胞通过TLR4-NF-κB信号通路分泌脂质运载蛋白-2(LCN2)。这种中性粒细胞源性的LCN2会破坏肺内皮细胞间的紧密连接,损害血管完整性,从而为循环肿瘤细胞的渗出和定植创造条件。此外,棕榈酸还会诱发中性粒细胞形成中性粒细胞胞外陷阱(NETs),并驱动其产生免疫抑制表型。通过使用GLP-1受体激动剂抑制内皮细胞的脂肪酸合成,可以有效修复血管屏障并减少肺转移。该成果不仅阐明了脂质驱动的转移器官亲和性机制,还为乳腺癌的代谢干预治疗提供了新思路。References:Qian P, Li Y, Han Y, et al. Palmitic acid reprograms neutrophils to compromise vascular integrity and promote breast cancer lung metastasis[J]. Immunity, 2026.前往小宇宙评论区与主播互动

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1054-棕榈酸诱导中性粒细胞重编程促进乳腺癌肺转移

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