PMID- 26863487 OWN - NLM STAT- MEDLINE DCOM- 20161031 LR - 20210627 IS - 1932-7420 (Electronic) IS - 1550-4131 (Print) IS - 1550-4131 (Linking) VI - 23 IP - 2 DP - 2016 Feb 9 TI - HIF-1alpha Promotes Glutamine-Mediated Redox Homeostasis and Glycogen-Dependent Bioenergetics to Support Postimplantation Bone Cell Survival. PG - 265-79 LID - S1550-4131(16)00036-X [pii] LID - 10.1016/j.cmet.2016.01.002 [doi] AB - Cell-based therapy is a promising strategy in regenerative medicine, but the poor survival rate of the implanted cells remains a major challenge and limits clinical translation. We preconditioned periosteal cells to the hypoxic and ischemic environment of the bone defect site by deleting prolyl hydroxylase domain-containing protein 2 (PHD2), resulting in hypoxia-inducible factor 1 alpha (HIF-1alpha) stabilization. This strategy increased postimplantation cell survival and improved bone regeneration. The enhanced cell viability was angiogenesis independent but relied on combined changes in glutamine and glycogen metabolism. HIF-1alpha stabilization stimulated glutaminase-mediated glutathione synthesis, maintaining redox homeostasis at baseline and during oxidative or nutrient stress. Simultaneously, HIF-1alpha signaling increased glycogen storage, preventing an energy deficit during nutrient or oxygen deprivation. Pharmacological inhibition of PHD2 recapitulated the adaptations in glutamine and glycogen metabolism and, consequently, the beneficial effects on cell survival. Thus, targeting cellular metabolism is an appealing strategy for bone regeneration and cell-based therapy in general. CI - Copyright (c) 2016 Elsevier Inc. All rights reserved. FAU - Stegen, Steve AU - Stegen S AD - Laboratory of Clinical and Experimental Endocrinology, Department of Clinical and Experimental Medicine, KU Leuven, 3000 Leuven, Belgium; Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, 3000 Leuven, Belgium. FAU - van Gastel, Nick AU - van Gastel N AD - Laboratory of Clinical and Experimental Endocrinology, Department of Clinical and Experimental Medicine, KU Leuven, 3000 Leuven, Belgium; Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, 3000 Leuven, Belgium. FAU - Eelen, Guy AU - Eelen G AD - Laboratory of Angiogenesis & Vascular Metabolism, Vesalius Research Center, Department of Oncology, KU Leuven/VIB, 3000 Leuven, Belgium. FAU - Ghesquiere, Bart AU - Ghesquiere B AD - Laboratory of Angiogenesis & Vascular Metabolism, Vesalius Research Center, Department of Oncology, KU Leuven/VIB, 3000 Leuven, Belgium. FAU - D'Anna, Flora AU - D'Anna F AD - Laboratory of Translational Genetics, Vesalius Research Center, Department of Oncology, KU Leuven/VIB, 3000 Leuven, Belgium. FAU - Thienpont, Bernard AU - Thienpont B AD - Laboratory of Translational Genetics, Vesalius Research Center, Department of Oncology, KU Leuven/VIB, 3000 Leuven, Belgium. FAU - Goveia, Jermaine AU - Goveia J AD - Laboratory of Angiogenesis & Vascular Metabolism, Vesalius Research Center, Department of Oncology, KU Leuven/VIB, 3000 Leuven, Belgium. FAU - Torrekens, Sophie AU - Torrekens S AD - Laboratory of Clinical and Experimental Endocrinology, Department of Clinical and Experimental Medicine, KU Leuven, 3000 Leuven, Belgium. FAU - Van Looveren, Riet AU - Van Looveren R AD - Laboratory of Clinical and Experimental Endocrinology, Department of Clinical and Experimental Medicine, KU Leuven, 3000 Leuven, Belgium. FAU - Luyten, Frank P AU - Luyten FP AD - Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, 3000 Leuven, Belgium; Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, 3000 Leuven, Belgium. FAU - Maxwell, Patrick H AU - Maxwell PH AD - Cambridge Institute for Medical Research, University of Cambridge, Cambridge CB2 0XU, UK. FAU - Wielockx, Ben AU - Wielockx B AD - Heisenberg Research Group, Department of Clinical Pathobiochemistry, Institute for Clinical Chemistry and Laboratory Medicine, Technische Universitat Dresden, 01069 Dresden, Germany. FAU - Lambrechts, Diether AU - Lambrechts D AD - Laboratory of Translational Genetics, Vesalius Research Center, Department of Oncology, KU Leuven/VIB, 3000 Leuven, Belgium. FAU - Fendt, Sarah-Maria AU - Fendt SM AD - Laboratory of Cellular Metabolism and Metabolic Regulation, Vesalius Research Center, Department of Oncology, KU Leuven/VIB, 3000 Leuven, Belgium. FAU - Carmeliet, Peter AU - Carmeliet P AD - Laboratory of Angiogenesis & Vascular Metabolism, Vesalius Research Center, Department of Oncology, KU Leuven/VIB, 3000 Leuven, Belgium. FAU - Carmeliet, Geert AU - Carmeliet G AD - Laboratory of Clinical and Experimental Endocrinology, Department of Clinical and Experimental Medicine, KU Leuven, 3000 Leuven, Belgium; Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, 3000 Leuven, Belgium. Electronic address: geert.carmeliet@med.kuleuven.be. LA - eng GR - 096956/WT_/Wellcome Trust/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Cell Metab JT - Cell metabolism JID - 101233170 RN - 0 (Hypoxia-Inducible Factor 1, alpha Subunit) RN - 0 (Reactive Oxygen Species) RN - 0RH81L854J (Glutamine) RN - 9005-79-2 (Glycogen) RN - EC 3.5.1.2 (GLS1 protein, mouse) RN - EC 3.5.1.2 (Glutaminase) SB - IM MH - Animals MH - Bone Regeneration MH - Cell Respiration MH - Cell Survival MH - *Energy Metabolism MH - Gene Deletion MH - Gene Knockdown Techniques MH - Gene Silencing MH - Glutaminase/metabolism MH - Glutamine/*metabolism MH - Glycogen/*metabolism MH - *Homeostasis MH - Hypoxia-Inducible Factor 1, alpha Subunit/*metabolism MH - Mice MH - Neovascularization, Physiologic MH - Osteocytes/metabolism/*transplantation MH - Oxidation-Reduction MH - Oxidative Stress MH - Periosteum/pathology MH - Reactive Oxygen Species/metabolism PMC - PMC7611069 MID - EMS127989 EDAT- 2016/02/11 06:00 MHDA- 2016/11/01 06:00 PMCR- 2021/06/24 CRDT- 2016/02/11 06:00 PHST- 2015/04/28 00:00 [received] PHST- 2015/10/19 00:00 [revised] PHST- 2016/01/02 00:00 [accepted] PHST- 2016/02/11 06:00 [entrez] PHST- 2016/02/11 06:00 [pubmed] PHST- 2016/11/01 06:00 [medline] PHST- 2021/06/24 00:00 [pmc-release] AID - S1550-4131(16)00036-X [pii] AID - 10.1016/j.cmet.2016.01.002 [doi] PST - ppublish SO - Cell Metab. 2016 Feb 9;23(2):265-79. doi: 10.1016/j.cmet.2016.01.002.