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Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Oncotarget 2016 ; 7 (48): 79774-86 Nephropedia Template TP
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Plasma glutamate carboxypeptidase is a negative regulator in liver cancer metastasis #MMPMID27806330
Lee JH; Cho HS; Lee JJ; Jun SY; Ahn JH; Min JS; Yoon JY; Choi MH; Jeon SJ; Lim JH; Jung CR; Kim DS; Kim HT; Factor VM; Lee YH; Thorgeirsson SS; Kim CH; Kim NS
Oncotarget 2016[Nov]; 7 (48): 79774-86 PMID27806330show ga
Tumor metastasis is the leading cause of cancer death. In the metastatic process, EMT is a unique phenotypic change that plays an important role in cell invasion and changes in cell morphology. Despite the clinical significance, the mechanism underlying tumor metastasis is still poorly understood. Here we report a novel mechanism by which secreted plasma glutamate carboxypeptidase(PGCP) negatively involves Wnt/?-catenin signaling by DKK4 regulation in liver cancer metastasis. Pathway analysis of the RNA sequencing data showed that PGCP knockdown in liver cancer cell lines enriched the functions of cell migration, motility and mesenchymal cell differentiation. Depletion of PGCP promoted cell migration and invasion via activation of Wnt/?-catenin signaling pathway components such as phospho-LRP6 and ?-catenin. Also, addition of DKK4 antagonized the Wnt/?-catenin signaling cascade in a thyroxine (T4)-dependent manner. In an in vivo study, metastatic nodules were observed in the lungs of the mice after injection of shPGCP stable cell lines. Our findings suggest that PGCP negatively associates with Wnt/?-catenin signaling during metastasis. Targeting this regulation may represent a novel and effective therapeutic option for liver cancer by preventing metastatic activity of primary tumor cells.