Transient receptor potential channel TRPM8 is over-expressed and required for cellular proliferation in pancreatic adenocarcinoma
Abstract
The roles of transient receptor potential (TRP) cation channels in pancreatic tumorigenesis are essentially unknown. Here, we focus on the TRP melastatin-subfamily (TRPM) members. Expression of the thermally regulated transmembrane Ca2+-permeable channel TRPM8 is consistently up-regulated in human pancreatic adenocarcinoma cell lines and tissues. TRPM8-deficient pancreatic cancer cells have reduced ability of proliferation and cell cycle progression with elevated levels of cyclin-dependent kinase inhibitors. These results indicate that TRPM8 is aberrantly over-expressed in pancreatic adenocarcinoma and required for cellular proliferation, and they support further investigation of the potential of TRPM8 as a clinical biomarker and therapeutic target in pancreatic adenocarcinoma.
Keywords: Transient receptor potential (TRP), TRPM8, Ion channel, Proliferation, Pancreatic cancer
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PII: S0304-3835(10)00238-7
doi:10.1016/j.canlet.2010.04.023
© 2010 Elsevier Ireland Ltd. All rights reserved.
