[en] Propranolol, a widely used non-selective beta-adrenergic receptor blocker, was recently shown to display anticancer properties. Its potential to synergize with certain drugs has been also outlined. However, it is necessary to take into account all the properties of propranolol to select a drug that could be efficiently combined with. Propranolol was reported to block the late phase of autophagy. Hence, we hypothesized that in condition enhancing autophagy flux, cancer cells should be especially sensitive to propranolol. 2DG, a glycolysis inhibitor, is an anti-tumor agent having limited effect in monotherapy notably due to induction of pro-survival autophagy. Here, we report that treatment of cancer cells with propranolol in combination with the glycolysis inhibitor 2DG induced a massive accumulation of autophagosome due to autophagy blockade. The propranolol +2DG treatment efficiently prevents prostate cancer cell proliferation, induces cell apoptosis, alters mitochondrial morphology, inhibits mitochondrial bioenergetics and aggravates ER stress in vitro and also suppresses tumor growth in vivo. Our study underlines for the first time the interest to take advantage of the ability of propranolol to inhibit autophagy to design new anti-cancer therapies.
Research center :
Giga-Cancer - ULiège
Disciplines :
Oncology
Author, co-author :
Brohée, Laura ; Université de Liège - ULiège > GIGA-Cancer > Laboratoire de Biologie des Tissus Conjonctifs
Peulen, Olivier ; Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Département des sciences biomédicales et précliniques
Nusgens, Betty ; Université de Liège - ULiège > Sciences Biomédicales et précliniques > Laboratoire de Biologie des Tissus Conjonctifs
Castronovo, Vincenzo ; Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie générale et cellulaire
Thiry, Marc ; Université de Liège - ULiège > Département des sciences de la vie > GIGA-R : Biologie cellulaire
Colige, Alain ; Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Laboratoire des tissus conjonctifs
Deroanne, Christophe ; Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Laboratoire des tissus conjonctifs
Language :
English
Title :
Propranolol sensitizes prostate cancer cells to glucose metabolism inhibition and prevents cancer progression.
Roles of lipins in cancer progression and analysis of their potential as targets for cancer therapy
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE] ULiège - Université de Liège [BE] CAC - Centre anticancéreux près l'Université de Liège asbl [BE]
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