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- W2321946824 abstract "// Gabriel Bidaux 1, 2, 3, * , Anne-Sophie Borowiec 1, 2, * , Charlotte Dubois 1, 2 , Philippe Delcourt 1, 2 , Céline Schulz 1, 2 , Fabien Vanden Abeele 1, 2 , Gilbert Lepage 1, 2 , Emilie Desruelles 1, 2 , Alexandre Bokhobza 1, 2 , Etienne Dewailly 1, 2 , Christian Slomianny 1, 2 , Morad Roudbaraki 1, 2 , Laurent Héliot 3 , Jean-Louis Bonnal 1, 2 , Brigitte Mauroy 1, 2 , Pascal Mariot 1, 2 , Loïc Lemonnier 1, 2 , Natalia Prevarskaya 1, 2 1 Inserm, U-1003, Equipe labellisée par la Ligue Nationale contre le cancer, Villeneuve d’Ascq, France 2 Université des Sciences et Technologies de Lille (USTL), Villeneuve d’Ascq, France 3 Laboratoire de Physique des Lasers, Atomes and Molécules, Equipe Biophotonique Cellulaire Fonctionnelle, Parc Scientifique de la Haute Borne, Villeneuve d’Ascq, France * These authors contributed equally to this work Correspondence to: Gabriel Bidaux, email: gabriel.bidaux@univ-lyon1.fr Keywords: TRPM8, ER calcium fluxes, mitochondria, prostate cancer, apoptosis Received: November 03, 2015 Accepted: March 29, 2016 Published: April 09, 2016 ABSTRACT Since its cloning a decade ago, TRPM8 channel has emerged as a promising prognostic marker and a putative therapeutic target in prostate cancer (PCa). However, recent studies have brought to light the complexity of TRPM8 isoforms in PCa. Consequently, the respective role of each TRPM8 isoform needs to be deciphered prior to considering TRPM8 as an attractive therapeutic target. Full-length (6 transmembrane (TM)-domain) TRPM8 channel is overexpressed in early PCa and repressed in advanced prostate tumors whereas the localization of the truncated, 4TM-TRPM8 channel (4 transmembrane (TM)-domain), in the membranes of endoplasmic reticulum (ER) is independent of the pathogenic status of epithelial cells. In the same line, expression of non-channel cytoplasmic small TRPM8 isoforms (namely sM8) is conserved in cancer cells. In this study, we identify sM8s as putative regulator of PCa cell death. Indeed, suppression of sM8 isoforms was found to induce concomitantly ER stress, oxidative stress, p21 expression and apoptosis in human epithelial prostate cancer cells. We furthermore demonstrate that induction of such mechanisms required the activity of 4TM-TRPM8 channels at the ER-mitochondria junction. Our study thus suggests that targeting sM8 could be an appropriate strategy to fight prostate cancer." @default.
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- W2321946824 date "2016-04-09" @default.
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- W2321946824 title "Targeting of short TRPM8 isoforms induces 4TM-TRPM8-dependent apoptosis in prostate cancer cells" @default.
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- W2321946824 doi "https://doi.org/10.18632/oncotarget.8666" @default.
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