Direct signaling between platelets and cancer cells induces an epithelial-mesenchymal-like transition and promotes metastasis.

Direct signaling between platelets and cancer cells induces an epithelial-mesenchymal-like transition and promotes metastasis.
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DOI:
10.1016/j.ccr.2011.09.009
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发表时间:
2011-11-15
期刊:
影响因子:
50.3
通讯作者:
Hynes RO
Hynes RO
中科院分区:
医学1区
文献类型:
--
作者:
Labelle M;Begum S;Hynes RO

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Interactions of cancer cells with the primary tumor microenvironment are important determinants of cancer progression towards metastasis but it is unknown whether additional prometastatic signals are provided during the intravascular transit to the site of metastasis. Here, we show that platelet-tumor cell interactions are sufficient to prime tumor cells for subsequent metastasis. Platelet-derived TGFβ and direct platelet-tumor cell contacts synergistically activate the TGFβ/Smad and NF-κB pathways in cancer cells, resulting in their transition to an invasive mesenchymal-like phenotype and enhanced metastasis in vivo. Inhibition of NF-κB signaling in cancer cells or ablation of TGFβ1 expression solely in platelets protects against lung metastasis in vivo. Thus, cancer cells rely on platelet-derived signals outside of the primary tumor for efficient metastasis.
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