The Wnt/β-catenin signaling pathway mechanism for pancreatic cancer chemoresistance in a three-dimensional cancer microenvironment.
β-catenin is a key protein that is encoded by theCTNNB1gene in the Wnt signaling pathway. This study investigated the associations between β-catenin expression and implications for the efficacy of gemcitabine on pancreatic cancer cells in a three-dimensional (3-D) cancer microenvironment. For low β-catenin expression pancreatic carcinoma cells, the inhibition rates (IRs) for low, middle, and high doses of gemcitabine were 0.615 ± 0.079, 0.691 ± 0.093, and 0.765 ± 0.061, respectively. For the high β-catenin expression pancreatic carcinoma cells, the IRs for the same doses were 0.325 ± 0.072, 0.453 ± 0.075, and 0.537 ± 0.056, respectively. Additionally, the evaluation of β-catenin immunoreactivity in 31 pancreatic cancer patients revealed that the low β-catenin protein expression group had significantly longer overall survival (OS) and disease free survival (DFS) than the high β-catenin protein group (P < 0.05). Overall, β-catenin protein expression levels were significantly correlated to gemcitabine sensitivity in seven pancreatic carcinoma cell lines in the 3-D cancer microenvironment. These data suggest that large-scale clinical studies are warranted to assess the role of the Wnt/β-catenin signaling pathway on β-catenin protein expression and chemosensitivity to gemcitabine in pancreatic cancer.
Department of Surgery, The Affiliated Hospital, Inner Mongolia Medical University Huhhot 010050, Inner Mongolia, China.
Qiang
Q
Zhang
Department of Surgery, The Affiliated Hospital, Inner Mongolia Medical University Huhhot 010050, Inner Mongolia, China.
Xing-Kai
XK
Meng
Department of Surgery, The Affiliated Hospital, Inner Mongolia Medical University Huhhot 010050, Inner Mongolia, China.
Wan-Xiang
WX
Wang
Department of Surgery, The Affiliated Hospital, Inner Mongolia Medical University Huhhot 010050, Inner Mongolia, China.
Rui-Ming
RM
Zhang
Department of Surgery, The Affiliated Hospital, Inner Mongolia Medical University Huhhot 010050, Inner Mongolia, China.
Tong
T
Zhang
Department of Surgery, The Affiliated Hospital, Inner Mongolia Medical University Huhhot 010050, Inner Mongolia, China.
Jian-Jun
JJ
Ren
Wnt signaling pathway; chemoresistance; pancreatic carcinoma