Luo Chen, Yuan Rongfa, Chen Leifeng, Zhou Wei, Shen Wei, Qiu Yumin, Shao Jun, Yan Jinlong, Shao Jianghua
Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang 330006, China.
Jiangxi Province Key Laboratory of Molecular Medicine, Nanchang 330006, China.
Oncotarget. 2017 Nov 18;8(63):106565-106576. doi: 10.18632/oncotarget.22497. eCollection 2017 Dec 5.
Transforming growth factor-β-activated kinase 1 (TAK1)-binding protein 3 (TAB3) is involved in cancer proliferation and metastasis, but its role in colorectal cancer remains unclear. In this study, we demonstrated that TAB3 is upregulated in colorectal cancer tissues and that high TAB3 levels correlated with tumor metastasis and a poor prognosis in colorectal cancer. In addition, TAB3 knockdown decreased Survivin expression and suppressed colorectal cancer cell migration and invasion , and reduced liver metastasis . Importantly, we found that TAB3 regulated Survivin expression by activating the NF-κB pathway through the formation of the TAK1-TAB3-TRAF6 complex. These findings suggest TAB3 may be a useful prognostic biomarker in colorectal cancer and a target for treatment of metastatic colorectal cancer.
转化生长因子-β激活激酶1(TAK1)结合蛋白3(TAB3)参与癌症的增殖和转移,但其在结直肠癌中的作用尚不清楚。在本研究中,我们证明TAB3在结直肠癌组织中上调,且高TAB3水平与结直肠癌的肿瘤转移和不良预后相关。此外,敲低TAB3可降低生存素表达,抑制结直肠癌细胞的迁移和侵袭,并减少肝转移。重要的是,我们发现TAB3通过形成TAK1-TAB3-TRAF6复合物激活NF-κB信号通路来调节生存素表达。这些发现表明,TAB3可能是结直肠癌中一个有用的预后生物标志物,也是转移性结直肠癌治疗的一个靶点。