FAK signaling is critical for ErbB-2/ErbB-3 receptor cooperation for oncogenic transformation and invasion.

FAK signaling is critical for ErbB-2/ErbB-3 receptor cooperation for oncogenic transformation and invasion.
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DOI:
10.1083/jcb.200504124
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发表时间:
2005-11-07
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Alaoui-Jamali MA
Alaoui-Jamali MA
中科院分区:
其他
文献类型:
--
作者:
Benlimame N;He Q;Jie S;Xiao D;Xu YJ;Loignon M;Schlaepfer DD;Alaoui-Jamali MA

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ErbB 酪氨酸激酶受体家族成员的过度表达与癌症进展相关。我们证明粘着斑激酶 (FAK) 对于 ErbB-2 和 -3 受体信号传导诱导的致癌转化和细胞侵袭至关重要。 ErbB-2/3 在 FAK 缺陷细胞中过表达无法促进细胞转化并挽救趋化性缺陷。 FAK 的恢复可挽救 ErbB-2/3 在体外和体内诱导的致癌转化和侵袭。相反,在 FAK 丰富的侵袭性癌细胞中抑制 FAK 可阻止细胞侵袭和转移形成。 ErbB-2/3 的激活可调节 Tyr-397、-861 和 -925 处的 FAK 磷酸化。 ErbB 诱导的致癌转化与 FAK 恢复 ErbB-2/3 诱导的丝裂原激活蛋白激酶 (MAPK) 激活的能力相关; MAPK 的抑制可防止致癌转化。相反,抑制 Src 而不是 MAPK 可以阻止 ErbB-FAK 诱导的趋化作用。在迁移细胞中,激活的 ErbB-2/3 受体与激活的 FAK 共定位于细胞突起处。这种共定位需要完整的 FAK。总之,独特的 FAK 信号传导在 ErbB 诱导的肿瘤发生和侵袭中具有重要功能。
The overexpression of members of the ErbB tyrosine kinase receptor family has been associated with cancer progression. We demonstrate that focal adhesion kinase (FAK) is essential for oncogenic transformation and cell invasion that is induced by ErbB-2 and -3 receptor signaling. ErbB-2/3 overexpression in FAK-deficient cells fails to promote cell transformation and rescue chemotaxis deficiency. Restoration of FAK rescues both oncogenic transformation and invasion that is induced by ErbB-2/3 in vitro and in vivo. In contrast, the inhibition of FAK in FAK-proficient invasive cancer cells prevented cell invasion and metastasis formation. The activation of ErbB-2/3 regulates FAK phosphorylation at Tyr-397, -861, and -925. ErbB-induced oncogenic transformation correlates with the ability of FAK to restore ErbB-2/3–induced mitogen-activated protein kinase (MAPK) activation; the inhibition of MAPK prevented oncogenic transformation. In contrast, the inhibition of Src but not MAPK prevented ErbB–FAK-induced chemotaxis. In migratory cells, activated ErbB-2/3 receptors colocalize with activated FAK at cell protrusions. This colocalization requires intact FAK. In summary, distinct FAK signaling has an essential function in ErbB-induced oncogenesis and invasiveness.
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