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University of Tennessee, Knoxville

Faculty Publications and Other Works -- Large Animal Clinical Sciences

2005

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Expression Of G-Protein Inwardly Rectifying Potassium Channels (Girks) In Lung Cancer Cell Lines, Howard K. Plummer, Madhu S. Dhar, Maria Cekanova, Hildegard M. Schuller Aug 2005

Expression Of G-Protein Inwardly Rectifying Potassium Channels (Girks) In Lung Cancer Cell Lines, Howard K. Plummer, Madhu S. Dhar, Maria Cekanova, Hildegard M. Schuller

Faculty Publications and Other Works -- Large Animal Clinical Sciences

Background

Previous data from our laboratory has indicated that there is a functional link between the β-adrenergic receptor signaling pathway and the G-protein inwardly rectifying potassium channel (GIRK1) in human breast cancer cell lines. We wanted to determine if GIRK channels were expressed in lung cancers and if a similar link exists in lung cancer.

Methods

GIRK1-4 expression and levels were determined by reverse transcription polymerase chain reaction (RT-PCR) and real-time PCR. GIRK protein levels were determined by western blots and cell proliferation was determined by a 5-bromo-2'-deoxyuridine (BrdU) assay.

Results

GIRK1 mRNA was expressed in three of six small …