TM4SF1, a binding protein of DVL2 in hepatocellular carcinoma, positively regulates beta-catenin/TCF signalling.

TM4SF1, a binding protein of DVL2 in hepatocellular carcinoma, positively regulates beta-catenin/TCF signalling.
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DOI:
10.1111/jcmm.14787
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发表时间:
2021-03
影响因子:
5.3
通讯作者:
Ji W
Ji W
中科院分区:
医学2区
文献类型:
--
作者:
Zhu C;Luo X;Wu J;Liu Y;Liu L;Ma S;Xie R;Wang S;Ji W

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Axin和DVL2之间的相互作用是破坏β-连环蛋白破坏复合体和激活Wnt/β-连环蛋白级联反应的关键。然而,这一生物学过程仍然知之甚少。在本研究中,TM4SF1被确定为DVL2的相互作用伙伴,并通过加强DVL2-Axin的相互作用正向调节Wnt/β-catenin信号转导。TM4SF1在肝细胞癌中的表达水平升高,并受Kras信号的诱导。TM4SF1的过表达促进了肝癌细胞的生长和运动,上调了靶基因Axin2和Cyclin D1的表达。TM4SF1的表达下调削弱了肝癌细胞的生长、迁移和转移能力。此外,TM4SF1的下调促进了β-连环蛋白的泛素化。综上所述,这些结果揭示了TM4SF1在肝癌进展中的致癌作用,并提示TM4SF1可能是治疗的靶点。
The interaction between Axin and DVL2 is critical for the breaking down of the beta‐catenin destruction complex and the activation of the Wnt/beta‐catenin cascade. However, this biological process remains poorly understood. In the present study, TM4SF1 was identified as the interacting partner of DVL2 and positively regulated as Wnt/beta‐catenin signalling by strengthening the DVL2‐Axin interaction. The expression levels of TM4SF1 were elevated in hepatocellular carcinoma (HCC) and were induced by Kras signalling. The overexpression of TM4SF1 promoted the growth and motility of HCC cells, and up‐regulated the target genes (Axin2 and cyclin D1). The down‐regulation of TM4SF1 impaired the capability of HCC cells for growth, migration and metastasis. In addition, the down‐regulation of TM4SF1 promoted the ubiquitination of beta‐catenin. In summary, these results reveal the oncogenic functions of TM4SF1 in HCC progression and suggest that TM4SF1 might be a target for treatment.
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