Abstract:
:Emerging evidence indicates that cancer stem cells (CSCs) are involved in tumorigenesis, tumor recurrence, and therapeutic resistance in hepatocellular carcinoma (HCC). However, the mechanisms underlying HCC CSC regulation remain largely unknown. Here we report our analysis of 97 paraffin-embedded HCC tumor specimens. We found that protein tyrosine kinase 2 (PTK2) expression correlated with liver CSC marker expression, overall survival, and recurrence-free survival in HCC patients. Our results further showed that PTK2 activated Wnt/β-catenin signaling by promoting nuclear accumulation of β-catenin in HCC cells. In this manner, PTK2 activates CSC traits and drives tumorigenicity in HCC cells, leading to HCC recurrence and sorafenib resistance. Moreover, PTK2 expression was negatively correlated with its level of promoter methylation. PTK2 apparently acts as an oncogene by increasing CSC traits and tumorigenicity in HCC. The present data suggest that PTK2 may be a novel prognostic biomarker for HCC recurrence, and a therapeutic target for HCC treatment.
journal_name
Cancer Lettjournal_title
Cancer lettersauthors
Fan Z,Duan J,Wang L,Xiao S,Li L,Yan X,Yao W,Wu L,Zhang S,Zhang Y,Li Y,Zhu X,Hu Y,Zhang D,Jiao S,Xu Xdoi
10.1016/j.canlet.2019.02.040subject
Has Abstractpub_date
2019-05-28 00:00:00pages
132-143eissn
0304-3835issn
1872-7980pii
S0304-3835(19)30126-0journal_volume
450pub_type
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