Overexpression of WWP1 Promotes tumorigenesis and predicts unfavorable prognosis in patients with hepatocellular carcinoma.

Overexpression of WWP1 Promotes tumorigenesis and predicts unfavorable prognosis in patients with hepatocellular carcinoma. Oncotarget. 2015 Oct 17; Authors: Zhang XF, Chao J, Pan QZ, Pan K, Weng DS, Wang QJ, Zhao JJ, He J, Liu Q, Jiang SS, Chen CL, Zhang HX, Xia JC Abstract WW domain-containing E3 ubiquitin protein ligase 1 (WWP1) has been speculated to play important roles in the development of several kinds of cancers. However, the role of WWP1 in hepatocellular carcinoma(HCC) is not clear. In the present study, we investigated the expression and prognostic role of WWP1 in primary hepatocellular carcinoma (HCC) using cell lines and 149 archived HCC samples. Correlation between the functions of WWP1 in HCC was also explored. We used human HCC cell lines (BEL-7402, SMMC-7721, Hep-G2, Hep-3B, SK-hep1 and Huh7) and a normal hepatocyte cell line (LO2) along with HCC samples from patients who had undergone resection for HCC previously at our hospital. A battery of methods (real-time quantitative polymerase chain reaction; western blotting; immunohistochemical analyses; cell proliferation and colony formation assays; cell migration and cell invasion assays) were employed to assess various aspects of WWP1. We found that WWP1 expression was upregulated aberrantly at mRNA and protein levels in human primary HCC tissues. Amplified expression of WWP1 was highly correlated with poor outcome. Silencing of WWP1 expression by siRNA inhibited the ...
Source: Oncotarget - Category: Cancer & Oncology Tags: Oncotarget Source Type: research