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2018 ; 9
(13
): 2389-2396
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PDE4a predicts poor prognosis and promotes metastasis by inducing
epithelial-mesenchymal transition in hepatocellular carcinoma
#MMPMID30026835
Peng Y
; Li Y
; Tian Y
; Ao G
J Cancer
2018[]; 9
(13
): 2389-2396
PMID30026835
show ga
Phosphodiesterases (PDEs) was found to be involved in a variety of cancer
pathologies by modulating the degradation of levels of cAMP/cGMP. However, the
prognostic significance and biological effect of PDE4a in hepatocellular
carcinoma (HCC) have not been understood completely. In the present study, PDE4a
expression was detected in a cohort of HCC and matched adjacent liver tissues (n
= 210) by immunohistochemistry staining and Western immunoblotting assay, And in
vitro experiments were conducted to determine the effect of PDE4a on metastatic
capacity of HCC cells. The data here displayed that the majority of HCC patients
had higher PDE4a expression in tumor tissues compared to matched adjacent liver
tissues and enhanced PDE4a expression in tumor tissues was associated positively
with HBV infection, liver cirrhosis, higher serum AFP level, advanced TNM stage,
vascular embolus, intrahepatic metastases and portal vein tumor thrombus (PVTT).
Survival analyses suggested that higher PDE4a was indicated the poor prognosis of
HCCs after liver resection. Ectopic expression of PDE4a in Huh7 cells leaded to
significant repression of E-cadherin and up-regulated the expression of
N-cadherin and Vimentin, and facilitated migration and invasion abilities.
Silencing PDE4a in MHCC97h cells acquired the opposite results. Taken together,
PDE4a triggered EMT in HCC cells and acted as a predictive factor candidate and a
potential therapeutic target for HCC.