PMID- 25288805 OWN - NLM STAT- MEDLINE DCOM- 20150120 LR - 20211021 IS - 1083-351X (Electronic) IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 289 IP - 46 DP - 2014 Nov 14 TI - Protein-tyrosine phosphatase 1B (PTP1B) is a novel regulator of central brain-derived neurotrophic factor and tropomyosin receptor kinase B (TrkB) signaling. PG - 31682-31692 LID - S0021-9258(20)33259-2 [pii] LID - 10.1074/jbc.M114.603621 [doi] AB - Neuronal protein-tyrosine phosphatase 1B (PTP1B) deficiency in mice results in enhanced leptin signaling and protection from diet-induced obesity; however, whether additional signaling pathways in the brain contribute to the metabolic effects of PTP1B deficiency remains unclear. Here, we show that the tropomyosin receptor kinase B (TrkB) receptor is a direct PTP1B substrate and implicate PTP1B in the regulation of the central brain-derived neurotrophic factor (BDNF) signaling. PTP1B interacts with activated TrkB receptor in mouse brain and human SH-SY5Y neuroblastoma cells. PTP1B overexpression reduces TrkB phosphorylation and activation of downstream signaling pathways, whereas PTP1B inhibition augments TrkB signaling. Notably, brains of Ptpn1(-/-) mice exhibit enhanced TrkB phosphorylation, and Ptpn1(-/-) mice are hypersensitive to central BDNF-induced increase in core temperature. Taken together, our findings demonstrate that PTP1B is a novel physiological regulator of TrkB and that enhanced BDNF/TrkB signaling may contribute to the beneficial metabolic effects of PTP1B deficiency. CI - (c) 2014 by The American Society for Biochemistry and Molecular Biology, Inc. FAU - Ozek, Ceren AU - Ozek C AD - Department of Animal Biology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104. FAU - Kanoski, Scott E AU - Kanoski SE AD - Department of Biological Sciences, Human and Evolutionary Biology Section, University of Southern California, Los Angeles, California 90089, and. FAU - Zhang, Zhong-Yin AU - Zhang ZY AD - Department of Biochemistry and Molecular Biology, School of Medicine, Indiana University, Indianapolis, Indiana 46202. FAU - Grill, Harvey J AU - Grill HJ AD - Department of Psychology, School of Arts and Sciences, University of Pennsylvania, Philadelphia, Pennsylvania 19104. FAU - Bence, Kendra K AU - Bence KK AD - Department of Animal Biology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104,. Electronic address: kbence@vet.upenn.edu. LA - eng GR - R01DK082417/DK/NIDDK NIH HHS/United States GR - R01DK021397/DK/NIDDK NIH HHS/United States GR - K01 DK097147/DK/NIDDK NIH HHS/United States GR - R01 DK021397/DK/NIDDK NIH HHS/United States GR - 5P30DK019525/DK/NIDDK NIH HHS/United States GR - R01CA69202/CA/NCI NIH HHS/United States GR - K01DK097147/DK/NIDDK NIH HHS/United States GR - R01 CA069202/CA/NCI NIH HHS/United States GR - R01 DK082417/DK/NIDDK NIH HHS/United States GR - P30 DK019525/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20141006 PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Membrane Glycoproteins) RN - EC 2.7.10.1 (Protein-Tyrosine Kinases) RN - EC 2.7.10.1 (Receptor, trkB) RN - EC 2.7.10.1 (tropomyosin-related kinase-B, human) RN - EC 3.1.3.48 (PTPN1 protein, human) RN - EC 3.1.3.48 (Protein Tyrosine Phosphatase, Non-Receptor Type 1) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/metabolism MH - Cell Line, Tumor MH - *Gene Expression Regulation, Enzymologic MH - Humans MH - Hypothalamus/metabolism MH - Male MH - Membrane Glycoproteins/*metabolism MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Neurons/metabolism MH - Phosphorylation MH - Protein Binding MH - Protein Tyrosine Phosphatase, Non-Receptor Type 1/*metabolism MH - Protein-Tyrosine Kinases/*metabolism MH - Receptor, trkB MH - Signal Transduction MH - Temperature PMC - PMC4231649 OTO - NOTNLM OT - Brain-derived Neurotrophic Factor (BDNF) OT - Hypothalamus OT - Metabolism OT - Phosphotyrosine Signaling OT - Receptor Tyrosine Kinase OT - Signal Transduction OT - Tyrosine-Protein Phosphatase (Tyrosine Phosphatase) EDAT- 2014/10/08 06:00 MHDA- 2015/01/21 06:00 PMCR- 2015/11/14 CRDT- 2014/10/08 06:00 PHST- 2014/10/08 06:00 [entrez] PHST- 2014/10/08 06:00 [pubmed] PHST- 2015/01/21 06:00 [medline] PHST- 2015/11/14 00:00 [pmc-release] AID - S0021-9258(20)33259-2 [pii] AID - M114.603621 [pii] AID - 10.1074/jbc.M114.603621 [doi] PST - ppublish SO - J Biol Chem. 2014 Nov 14;289(46):31682-31692. doi: 10.1074/jbc.M114.603621. Epub 2014 Oct 6.