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Παρασκευή 21 Ιουλίου 2017

Overexpression of Rabl3 and Cullin7 is associated with pathogenesis and poor prognosis in hepatocellular carcinoma

Publication date: Available online 21 July 2017
Source:Human Pathology
Author(s): Jun An, Zhiyong Liu, Qiong Liang, Yuhang Pan, Haifeng Li, Ruizhi Wang, Yi Jin
The expression of Rabl3 and Cullin7 is relevant to the carcinogenesis of certain cancers. However, the relationship of this expression with hepatocellular carcinoma remains unclear. To study the protein expression of Rabl3 and Cullin7 and to evaluate their role in hepatocarcinogenesis, in 162 cases of hepatocellular carcinoma, we used immunohistochemistry to investigate the expression of Rabl3 and Cullin7 in both the cancer tissues and the normal hepatic tissues around the hepatocellular carcinoma. The results demonstrated that the rates of positive Rabl3 and Cullin7 expression were 80.2% and 69.1%, respectively, in hepatocellular carcinoma tissues. However, the rates of positive Rabl3 and Cullin7 expression were 31.5% and 29.0%, respectively, in adjacent normal hepatic tissues. Rabl3 and Cullin7 were expressed at significantly higher rates in hepatocellular carcinoma compared with adjacent normal hepatic tissues (P<.01). The rates of positive Rabl3 and Cullin7 expression were higher in the hepatocellular carcinoma tissues of patients with lymph node metastasis, tumor thrombi in the portal vein and an advanced clinical stage (P<.05). A positive correlation between the expression of Rabl3 and the expression of Cullin7 (r=0.27, P<.001) was also observed in our hepatocellular carcinoma cohort. Moreover, patients with positive expression for both Rabl3 and Cullin7 had a remarkably shorter survival time compared with patients with negative expression for both proteins (P<.05). Therefore, the expression of the Rabl3 and Cullin7 proteins may play an important role in the pathogenesis and progression of hepatocellular carcinoma and could be used as a prognostic indicator in patients with hepatocellular carcinoma.



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