The BMP inhibitor Coco reactivates breast cancer cells at lung metastatic sites.

The BMP inhibitor Coco reactivates breast cancer cells at lung metastatic sites.
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DOI:
10.1016/j.cell.2012.06.035
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发表时间:
2012-08-17
期刊:
影响因子:
64.5
通讯作者:
Giancotti FG
Giancotti FG
中科院分区:
生物学1区
文献类型:
--
作者:
Gao H;Chakraborty G;Lee-Lim AP;Mo Q;Decker M;Vonica A;Shen R;Brogi E;Brivanlou AH;Giancotti FG

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转移休眠和再激活的机制基础知之甚少。功能获得性cDNA筛选揭示了Coco,一种分泌的TGF-β配体拮抗剂,诱导休眠的乳腺癌细胞在肺中重新激活。机制研究表明,可可通过阻断肺源性BMP配体发挥这种作用。Coco增强了与癌症干细胞相关的特征的表现,而BMP信号抑制了它。Coco诱导了一个离散的基因表达特征,这与患者的肺转移复发密切相关,但与骨或脑转移复发无关。在小鼠模型中的实验表明,这些器官含有缺乏生物活性BMP的壁龛。这些发现表明,转移起始细胞需要克服器官特异性抗转移信号才能重新激活。
The mechanistic underpinnings of metastatic dormancy and reactivation are poorly understood. A gain-of-function cDNA screen reveals that Coco, a secreted antagonist of TGF-β ligands, induces dormant breast cancer cells to undergo reactivation in the lung. Mechanistic studies indicate that Coco exerts this effect by blocking lung-derived BMP ligands. Whereas Coco enhances the manifestation of traits associated with cancer stem cells, BMP signaling suppresses it. Coco induces a discrete gene expression signature, which is strongly associated with metastatic relapse to the lung but not to the bone or brain in patients. Experiments in mouse models suggest that these latter organs contain niches devoid of bioactive BMP. These findings reveal that metastasis-initiating cells need to overcome organ-specific anti-metastatic signals in order to undergo reactivation.
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