PTHrP stimulates prostate cancer cell growth and upregulates aldo-keto reductase 1C3
By: Downs TM, Burton DW, Araiza FL, Hastings RH, Deftos LJ.

Department of Surgery, Veterans Administration San Diego Healthcare System and the University of California, San Diego, CA 92161, USA; Moores UCSD Cancer Center, The University of California, San Diego, CA 92093, USA.
Cancer Lett. 2011 Mar 26.

Abstract

The aim of the study was to demonstrate the role of parathyroid hormone related protein (PTHrP) in stimulating aldo-keto reductase (AKR) 1C3 expression in prostate cancer (CaP) cells. CaP cell proliferation and resistance to apoptosis was increased by PTHrP transfection. Conversely, reducing AKR1C3 expression by siRNA decreased cell proliferation. Since these effects could be mediated through AKR1C3-catalyzed reductions of the PPARγ ligand, 15-DeoxyΔ(12,14)-PGJ(2), we treated the cells with prostaglandins (PG). (PG) D(2) inhibited cell proliferation, but its metabolite, 9α,11β-PGF(2), did not effect CaP cell growth. The AKR1C family members serve as potential therapeutic targets for CaP therapy.

Published by Elsevier Ireland Ltd.

PMID: 21444150 [PubMed - as supplied by publisher] Source: National Library of Medicine.







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