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Translational and Therapeutic Potential of the Tumor Microenvironment

Abstract A68: GPCRs as potential therapeutic targets in pancreatic cancer-associated fibroblasts

Shu Zhou, Randall French, Andrew M. Lowy and Paul A. Insel
Shu Zhou
University of California, San Diego, La Jolla, CA.
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Randall French
University of California, San Diego, La Jolla, CA.
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Andrew M. Lowy
University of California, San Diego, La Jolla, CA.
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Paul A. Insel
University of California, San Diego, La Jolla, CA.
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DOI: 10.1158/1538-7445.CHTME14-A68 Published January 2015
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Abstracts: AACR Special Conference on Cellular Heterogeneity in the Tumor Microenvironment; February 26 — March 1, 2014; San Diego, CA

Abstract

Pancreatic ductal adenocarcinoma (PDAC) is characterized by a dense fibrotic stromal matrix, composed of activated fibroblasts/stellate cells, inflammatory cells and other cell types. This unique tumor microenvironment has been increasingly recognized as a key mediator of PDAC progression and drug resistance. Thus, targeting the tumor stroma may be a novel therapeutic approach for PDAC. We hypothesized that G protein-coupled receptors (GPCRs) expressed by pancreatic cancer-associated fibroblasts (CAFs) may be potential therapeutic targets for PDAC. To begin to test this hypothesis, we used an unbiased GPCRomic array approach to identify and quantify the GPCRs expressed by pancreatic CAFs. We found 125 GPCRs, whose expression was shared in CAFs obtained from the primary tumors of five patients. Among those GPCRs, 35 had at least two-fold higher expression in the CAFs compared to normal pancreatic fibroblasts and included GPCRs that link to each of the major classes of G proteins. RT-PCR analysis of the 10 most up-regulated GPCRs correlated well (r2=0.88) with the data from the GPCR array. We conclude that: 1) GPCRomic array analysis can identify and quantify the profile of GPCRs expressed by pancreatic CAFs; 2) the CAF-expressed profile differs from that of normal pancreatic fibroblasts and 3) GPCRs expressed by CAFs may have functional roles and be novel therapeutic targets for PDAC.

Citation Format: Shu Zhou, Randall French, Andrew M. Lowy, Paul A. Insel. GPCRs as potential therapeutic targets in pancreatic cancer-associated fibroblasts. [abstract]. In: Abstracts: AACR Special Conference on Cellular Heterogeneity in the Tumor Microenvironment; 2014 Feb 26-Mar 1; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2015;75(1 Suppl):Abstract nr A68. doi:10.1158/1538-7445.CHTME14-A68

  • ©2015 American Association for Cancer Research.
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Cancer Research: 75 (1 Supplement)
January 2015
Volume 75, Issue 1 Supplement
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Abstract A68: GPCRs as potential therapeutic targets in pancreatic cancer-associated fibroblasts
Shu Zhou, Randall French, Andrew M. Lowy and Paul A. Insel
Cancer Res January 1 2015 (75) (1 Supplement) A68; DOI: 10.1158/1538-7445.CHTME14-A68

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Abstract A68: GPCRs as potential therapeutic targets in pancreatic cancer-associated fibroblasts
Shu Zhou, Randall French, Andrew M. Lowy and Paul A. Insel
Cancer Res January 1 2015 (75) (1 Supplement) A68; DOI: 10.1158/1538-7445.CHTME14-A68
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Cancer Research Online ISSN: 1538-7445
Cancer Research Print ISSN: 0008-5472
Journal of Cancer Research ISSN: 0099-7013
American Journal of Cancer ISSN: 0099-7374

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