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  • GPCRomics: GPCR expression in cancer cells and tumors identifies new, potential biomarkers and therapeutic targets

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    Author(s)
    Insel, PA
    Sriram, K
    Wiley, SZ
    Wilderman, A
    Katakia, T
    McCann, T
    Yokouchi, H
    Zhang, L
    Corriden, R
    Liu, D
    Feigin, ME
    French, RP
    Lowy, AM
    Murray, F
    Griffith University Author(s)
    Sriram, Krishna K.
    Year published
    2018
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    Abstract
    G protein-coupled receptors (GPCRs), the largest family of targets for approved drugs, are rarely targeted for cancer treatment, except for certain endocrine and hormone-responsive tumors. Limited knowledge regarding GPCR expression in cancer cells likely has contributed to this lack of use of GPCR-targeted drugs as cancer therapeutics. We thus undertook GPCRomic studies to define the expression of endoGPCRs (which respond to endogenous molecules such as hormones, neurotransmitters and metabolites) in multiple types of cancer cells. Using TaqMan qPCR arrays to quantify the mRNA expression of ~340 such GPCRs, we found that ...
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    G protein-coupled receptors (GPCRs), the largest family of targets for approved drugs, are rarely targeted for cancer treatment, except for certain endocrine and hormone-responsive tumors. Limited knowledge regarding GPCR expression in cancer cells likely has contributed to this lack of use of GPCR-targeted drugs as cancer therapeutics. We thus undertook GPCRomic studies to define the expression of endoGPCRs (which respond to endogenous molecules such as hormones, neurotransmitters and metabolites) in multiple types of cancer cells. Using TaqMan qPCR arrays to quantify the mRNA expression of ~340 such GPCRs, we found that human chronic lymphocytic leukemia (CLL) cells/stromal cells associated with CLL, breast cancer cell lines, colon cancer cell lines, pancreatic ductal adenocarcinoma (PDAC) cells, cancer associated fibroblasts (CAFs), and PDAC tumors express 50 to > 100 GPCRs, including many orphan GPCRs (which lack known physiologic agonists). Limited prior data exist regarding the expression or function of most of the highly expressed GPCRs in these cancer cells and tumors. Independent results from public cancer gene expression databases confirm the expression of such GPCRs. We propose that highly expressed GPCRs in cancer cells (for example, GPRC5A in PDAC and colon cancer cells and GPR68 in PDAC CAFs) may contribute to the malignant phenotype, serve as biomarkers and/or may be novel therapeutic targets for the treatment of cancer.
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    Journal Title
    Frontiers in Pharmacology
    Volume
    9
    Issue
    MAY
    DOI
    https://doi.org/10.3389/fphar.2018.00431
    Copyright Statement
    © 2018 Insel, Sriram, Wiley, Wilderman, Katakia, McCann, Yokouchi, Zhang, Corriden, Liu, Feigin, French, Lowy and Murray. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
    Subject
    Pharmacology and pharmaceutical sciences
    Publication URI
    http://hdl.handle.net/10072/388288
    Collection
    • Journal articles

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