PMID- 28930663 OWN - NLM STAT- MEDLINE DCOM- 20171018 LR - 20191220 IS - 1097-4180 (Electronic) IS - 1074-7613 (Print) IS - 1074-7613 (Linking) VI - 47 IP - 3 DP - 2017 Sep 19 TI - The TREM2-APOE Pathway Drives the Transcriptional Phenotype of Dysfunctional Microglia in Neurodegenerative Diseases. PG - 566-581.e9 LID - S1074-7613(17)30366-7 [pii] LID - 10.1016/j.immuni.2017.08.008 [doi] AB - Microglia play a pivotal role in the maintenance of brain homeostasis but lose homeostatic function during neurodegenerative disorders. We identified a specific apolipoprotein E (APOE)-dependent molecular signature in microglia from models of amyotrophic lateral sclerosis (ALS), multiple sclerosis (MS), and Alzheimer's disease (AD) and in microglia surrounding neuritic beta-amyloid (Abeta)-plaques in the brains of people with AD. The APOE pathway mediated a switch from a homeostatic to a neurodegenerative microglia phenotype after phagocytosis of apoptotic neurons. TREM2 (triggering receptor expressed on myeloid cells 2) induced APOE signaling, and targeting the TREM2-APOE pathway restored the homeostatic signature of microglia in ALS and AD mouse models and prevented neuronal loss in an acute model of neurodegeneration. APOE-mediated neurodegenerative microglia had lost their tolerogenic function. Our work identifies the TREM2-APOE pathway as a major regulator of microglial functional phenotype in neurodegenerative diseases and serves as a novel target that could aid in the restoration of homeostatic microglia. CI - Copyright (c) 2017 Elsevier Inc. All rights reserved. FAU - Krasemann, Susanne AU - Krasemann S AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Institute of Neuropathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany. FAU - Madore, Charlotte AU - Madore C AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - Cialic, Ron AU - Cialic R AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - Baufeld, Caroline AU - Baufeld C AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - Calcagno, Narghes AU - Calcagno N AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - El Fatimy, Rachid AU - El Fatimy R AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - Beckers, Lien AU - Beckers L AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - O'Loughlin, Elaine AU - O'Loughlin E AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - Xu, Yang AU - Xu Y AD - Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA, USA. FAU - Fanek, Zain AU - Fanek Z AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - Greco, David J AU - Greco DJ AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - Smith, Scott T AU - Smith ST AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - Tweet, George AU - Tweet G AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - Humulock, Zachary AU - Humulock Z AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - Zrzavy, Tobias AU - Zrzavy T AD - Center for Brain Research, Medical University of Vienna, Vienna, Austria. FAU - Conde-Sanroman, Patricia AU - Conde-Sanroman P AD - Department of Medicine, Icahn School of Medicine at Mount Sinai, NY, USA. FAU - Gacias, Mar AU - Gacias M AD - Department of Medicine, Icahn School of Medicine at Mount Sinai, NY, USA. FAU - Weng, Zhiping AU - Weng Z AD - Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA, USA. FAU - Chen, Hao AU - Chen H AD - Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA, USA. FAU - Tjon, Emily AU - Tjon E AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - Mazaheri, Fargol AU - Mazaheri F AD - German Center for Neurodegenerative Diseases, Munich, Germany. FAU - Hartmann, Kristin AU - Hartmann K AD - Institute of Neuropathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany. FAU - Madi, Asaf AU - Madi A AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - Ulrich, Jason D AU - Ulrich JD AD - Department of Neurology, Hope Center for Neurological Disorders, Knight Alzheimer's Disease Research Center, Washington University School of Medicine, St. Louis, USA. FAU - Glatzel, Markus AU - Glatzel M AD - Institute of Neuropathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany. FAU - Worthmann, Anna AU - Worthmann A AD - Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany. FAU - Heeren, Joerg AU - Heeren J AD - Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany. FAU - Budnik, Bogdan AU - Budnik B AD - Mass Spectrometry and Proteomics Resource Laboratory, Faculty of Arts and Sciences Division of Science, Harvard University, Cambridge MA, USA. FAU - Lemere, Cynthia AU - Lemere C AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - Ikezu, Tsuneya AU - Ikezu T AD - Department of Pharmacology and Experimental Therapeutics and Department of Neurology, Boston University School of Medicine, MA, USA. FAU - Heppner, Frank L AU - Heppner FL AD - Department of Neuropathology, Charite-Universitatsmedizin Berlin, Berlin, Germany; Cluster of Excellence, NeuroCure, Chariteplatz 1, 10117 Berlin, Germany. FAU - Litvak, Vladimir AU - Litvak V AD - Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA, USA. FAU - Holtzman, David M AU - Holtzman DM AD - Department of Neurology, Hope Center for Neurological Disorders, Knight Alzheimer's Disease Research Center, Washington University School of Medicine, St. Louis, USA. FAU - Lassmann, Hans AU - Lassmann H AD - Center for Brain Research, Medical University of Vienna, Vienna, Austria. FAU - Weiner, Howard L AU - Weiner HL AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Evergrande Center for Immunologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. FAU - Ochando, Jordi AU - Ochando J AD - Department of Medicine, Icahn School of Medicine at Mount Sinai, NY, USA. FAU - Haass, Christian AU - Haass C AD - German Center for Neurodegenerative Diseases, Munich, Germany; Biomedical Center, Biochemistry, Ludwig-Maximilians-Universitat Munich, Munich, Germany; Munich Cluster for Systems Neurology, Munich, Germany. FAU - Butovsky, Oleg AU - Butovsky O AD - Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Evergrande Center for Immunologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. Electronic address: obutovsky@rics.bwh.harvard.edu. LA - eng GR - RF1 AG054199/AG/NIA NIH HHS/United States GR - R01 AG040092/AG/NIA NIH HHS/United States GR - R01 AG043975/AG/NIA NIH HHS/United States GR - R01 NS088137/NS/NINDS NIH HHS/United States GR - P01 AG003991/AG/NIA NIH HHS/United States GR - P50 AG005681/AG/NIA NIH HHS/United States GR - R01 AG054672/AG/NIA NIH HHS/United States GR - Z01 AG000399/Intramural NIH HHS/United States GR - R01 AG051812/AG/NIA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - Immunity JT - Immunity JID - 9432918 RN - 0 (Amyloid beta-Peptides) RN - 0 (Amyloid beta-Protein Precursor) RN - 0 (Apolipoproteins E) RN - 0 (Membrane Glycoproteins) RN - 0 (Receptors, Immunologic) RN - 0 (Transforming Growth Factor beta) RN - 0 (Trem2 protein, mouse) RN - EC 1.15.1.1 (Superoxide Dismutase-1) SB - IM CIN - Immunity. 2017 Sep 19;47(3):398-400. PMID: 28930654 MH - Alzheimer Disease/genetics/metabolism/pathology MH - Amyloid beta-Peptides/metabolism MH - Amyloid beta-Protein Precursor/metabolism MH - Animals MH - Apolipoproteins E/deficiency/genetics/*metabolism MH - Apoptosis/genetics/immunology MH - Cerebral Cortex/metabolism/pathology MH - Cluster Analysis MH - Disease Models, Animal MH - Encephalomyelitis, Autoimmune, Experimental MH - Female MH - Gene Expression Profiling MH - Gene Expression Regulation MH - Gene Targeting MH - Humans MH - Immune Tolerance MH - Membrane Glycoproteins/*metabolism MH - Mice MH - Mice, Knockout MH - Mice, Transgenic MH - Microglia/immunology/*metabolism MH - Monocytes/immunology/metabolism MH - Neurodegenerative Diseases/*genetics/immunology/*metabolism MH - Neurons/metabolism MH - Phagocytosis/genetics/immunology MH - Phenotype MH - Plaque, Amyloid/metabolism/pathology MH - Receptors, Immunologic/*metabolism MH - *Signal Transduction MH - Superoxide Dismutase-1/genetics/metabolism MH - *Transcriptome MH - Transforming Growth Factor beta/metabolism PMC - PMC5719893 MID - NIHMS901481 OTO - NOTNLM OT - APOE OT - Alzheimer's disease OT - TREM2 OT - amyotrophic lateral sclerosis OT - microglia OT - multiple sclerosis OT - neurodegeneration OT - transcriptional regulation COIS- Competing financial interests: CH: Roche advisor and collaborator. All other authors declare no conflict of interests. EDAT- 2017/09/21 06:00 MHDA- 2017/10/19 06:00 PMCR- 2018/09/19 CRDT- 2017/09/21 06:00 PHST- 2017/03/02 00:00 [received] PHST- 2017/07/06 00:00 [revised] PHST- 2017/08/17 00:00 [accepted] PHST- 2017/09/21 06:00 [entrez] PHST- 2017/09/21 06:00 [pubmed] PHST- 2017/10/19 06:00 [medline] PHST- 2018/09/19 00:00 [pmc-release] AID - S1074-7613(17)30366-7 [pii] AID - 10.1016/j.immuni.2017.08.008 [doi] PST - ppublish SO - Immunity. 2017 Sep 19;47(3):566-581.e9. doi: 10.1016/j.immuni.2017.08.008.