当前位置:首页>南京>Immunity | 南京大学医学院魏继武团队揭示棕榈酸介导的肺转移前生态位形成机制及干预策略

Immunity | 南京大学医学院魏继武团队揭示棕榈酸介导的肺转移前生态位形成机制及干预策略

  • 2026-05-10 12:26:58
Immunity | 南京大学医学院魏继武团队揭示棕榈酸介导的肺转移前生态位形成机制及干预策略

编辑丨Jesse

AutophagyAdvances

三阴性乳腺癌(TNBC)是一类恶性程度极高的乳腺癌亚型,具有预后差、复发率高、治疗手段有限的特征。其三阴性乳腺癌最受关注的恶性特征为易发生远处器官转移,尤以肺转移最为高发,显著加剧患者不良预后。越来越多研究证实,原发肿瘤可通过构建转移前微环境(PMN) 对远处器官进行预驯化,为后续肿瘤定植转移创造条件。肿瘤分泌的可溶性因子能够重编程基质细胞,重塑局部代谢特征与免疫抑制微环境,进而协助循环肿瘤细胞(CTC)定植。这也提示,深入阐明肿瘤器官倾向性转移的分子机制具有重要研究价值。
2026424日,南京大学医学院魏继武队在Immunity杂志在线发表题为“Palmitic acid reprograms neutrophils to compromise vascular integrity and promote breast cancer lung metastasis”的研究论文,提出了“脂质–免疫–血管屏障”时空协同促进肿瘤器官倾向性转移的新理论。

肿瘤远处转移是导致癌症患者死亡的主要原因,而肿瘤细胞为何“选择性”定植于特定器官,仍是国际肿瘤学界亟待破解的重大科学难题。围绕这一关键问题,研究团队聚焦“转移前生态位”(Pre-metastatic niche的形成机制,深入解析肺部微环境中代谢重编程与免疫调控之间的交互网络。

研究首次发现三阴性乳腺癌在远端转移发生前,即可通过系统性信号重塑肺部脂质代谢,诱导肺血管内皮细胞大量分泌棕榈酸(Palmitic acid),在肺组织中构建一个富含脂质的促转移微环境;该脂质信号通过激活中性粒细胞中的TLR4–NF-κB通路,促使其释放关键炎症因子LCN2Lipocalin-2),破坏肺微血管内皮的紧密连接结构,为循环肿瘤细胞的外渗和肺部定植打开通道

更重要的是,研究团队通过靶向干预肺内皮细胞的脂肪酸合成途径,成功阻断了这一级联反应,不仅显著降低肺转移负荷,还同步改善了肺部的抗肿瘤免疫微环境。该工作不仅阐明了代谢-免疫互作驱动器官特异性转移的新机制,也为临床干预肿瘤转移提供了全新的理论支撑与潜在治疗策略。

图1. 文章模式图

南京大学医学院博士毕业生钱鹏、博士研究生李玉鑫韩毅峰为论文共同第一作者;南京大学医学院魏继武教授和南京大学医学院附属鼓楼医院邹征云教授为共同通讯作者;医学院附属鼓楼医院病理科许纯博士为本研究提供了病理学支持。

论文链接

https://www.sciencedirect.com/science/article/pii/S1074761326001378

AutophagyAdvances

Autophagy Advances公众号是国内生命科学与自噬领域的高端学术公众号,集结了中科院、北大、清华、武大等众多高校学术骨干,旨在推广国内外生命科学及自噬领域学术交流与合作。

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  1. CONNECT:[ UseTime:0.000532s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000612s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000661s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.001086s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000729s ]
  6. SELECT * FROM `set` [ RunTime:0.002444s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000664s ]
  8. SELECT * FROM `article` WHERE `id` = 551577 LIMIT 1 [ RunTime:0.006054s ]
  9. UPDATE `article` SET `lasttime` = 1778401291 WHERE `id` = 551577 [ RunTime:0.003401s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000333s ]
  11. SELECT * FROM `article` WHERE `id` < 551577 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000711s ]
  12. SELECT * FROM `article` WHERE `id` > 551577 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002009s ]
  13. SELECT * FROM `article` WHERE `id` < 551577 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001716s ]
  14. SELECT * FROM `article` WHERE `id` < 551577 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000954s ]
  15. SELECT * FROM `article` WHERE `id` < 551577 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000864s ]
0.120168s