PMID- 35045295 OWN - NLM STAT- MEDLINE DCOM- 20220214 LR - 20240511 IS - 2211-1247 (Electronic) VI - 38 IP - 3 DP - 2022 Jan 18 TI - A bidirectional competitive interaction between circHomer1 and Homer1b within the orbitofrontal cortex regulates reversal learning. PG - 110282 LID - S2211-1247(21)01797-6 [pii] LID - 10.1016/j.celrep.2021.110282 [doi] AB - Although circular RNAs (circRNAs) are enriched in the brain, their relevance for brain function and psychiatric disorders is poorly understood. Here, we show that circHomer1 is inversely associated with relative HOMER1B mRNA isoform levels in both the orbitofrontal cortex (OFC) and stem-cell-derived neuronal cultures of subjects with psychiatric disorders. We further demonstrate that in vivo circHomer1 knockdown (KD) within the OFC can inhibit the synaptic expression of Homer1b mRNA. Furthermore, we show that circHomer1 directly binds to Homer1b mRNA and that Homer1b-specific KD increases synaptic circHomer1 levels and improves OFC-mediated behavioral flexibility. Importantly, double circHomer1 and Homer1b in vivo co-KD results in a complete rescue in circHomer1-associated alterations in both chance reversal learning and synaptic gene expression. Lastly, we uncover an RNA-binding protein that can directly bind to circHomer1 and promote its biogenesis. Taken together, our data provide mechanistic insights into the importance of circRNAs in brain function and disease. CI - Copyright (c) 2021 The Authors. Published by Elsevier Inc. All rights reserved. FAU - Hafez, Alexander K AU - Hafez AK AD - Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM, USA; Autophagy Inflammation and Metabolism Center of Biomedical Research Excellence, University of New Mexico Health Sciences Center, Albuquerque, NM, USA. FAU - Zimmerman, Amber J AU - Zimmerman AJ AD - Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM, USA. FAU - Papageorgiou, Grigorios AU - Papageorgiou G AD - Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM, USA. FAU - Chandrasekaran, Jayapriya AU - Chandrasekaran J AD - Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM, USA. FAU - Amoah, Stephen K AU - Amoah SK AD - Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM, USA; Autophagy Inflammation and Metabolism Center of Biomedical Research Excellence, University of New Mexico Health Sciences Center, Albuquerque, NM, USA. FAU - Lin, Rixing AU - Lin R AD - McGill Group for Suicide Studies, Douglas Mental Health University Institute, Department of Psychiatry, McGill University, Montreal, QC, Canada. FAU - Lozano, Evelyn AU - Lozano E AD - Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM, USA. FAU - Pierotti, Caroline AU - Pierotti C AD - Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM, USA. FAU - Dell'Orco, Michela AU - Dell'Orco M AD - Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM, USA. FAU - Hartley, Brigham J AU - Hartley BJ AD - Pamela Sklar Division of Psychiatric Genomics, Friedman Brain Institute, Departments of Genetics and Genomic Sciences, Neuroscience, and Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA. FAU - Alural, Begum AU - Alural B AD - Center for Genomic Medicine, Chemical Neurobiology Laboratory, Departments of Neurology and Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA. FAU - Lalonde, Jasmin AU - Lalonde J AD - Center for Genomic Medicine, Chemical Neurobiology Laboratory, Departments of Neurology and Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA. FAU - Esposito, John Matthew AU - Esposito JM AD - Translational Neuroscience Laboratory, Mclean Hospital, Belmont, MA, USA. FAU - Berretta, Sabina AU - Berretta S AD - Translational Neuroscience Laboratory, Mclean Hospital, Belmont, MA, USA; Department of Psychiatry, Harvard Medical School, Boston, MA, USA; Program in Neuroscience, Harvard Medical School, Boston, MA, USA. FAU - Squassina, Alessio AU - Squassina A AD - Department of Biomedical Sciences, Section of Neuroscience and Clinical Pharmacology, University of Cagliari, Cagliari, Italy. FAU - Chillotti, Caterina AU - Chillotti C AD - Unit of Clinical Pharmacology, University Hospital Agency of Cagliari, Cagliari, Italy. FAU - Voloudakis, Georgios AU - Voloudakis G AD - Pamela Sklar Division of Psychiatric Genomics, New York, NY, USA; Department of Genetics and Genomic Sciences, New York, NY, USA; Icahn Institute for Data Science and Genomic Technology, New York, NY, USA; Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA. FAU - Shao, Zhiping AU - Shao Z AD - Pamela Sklar Division of Psychiatric Genomics, New York, NY, USA; Department of Genetics and Genomic Sciences, New York, NY, USA; Icahn Institute for Data Science and Genomic Technology, New York, NY, USA. FAU - Fullard, John F AU - Fullard JF AD - Pamela Sklar Division of Psychiatric Genomics, New York, NY, USA; Department of Genetics and Genomic Sciences, New York, NY, USA; Icahn Institute for Data Science and Genomic Technology, New York, NY, USA. FAU - Brennand, Kristen J AU - Brennand KJ AD - Pamela Sklar Division of Psychiatric Genomics, Friedman Brain Institute, Departments of Genetics and Genomic Sciences, Neuroscience, and Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA. FAU - Turecki, Gustavo AU - Turecki G AD - McGill Group for Suicide Studies, Douglas Mental Health University Institute, Department of Psychiatry, McGill University, Montreal, QC, Canada. FAU - Roussos, Panos AU - Roussos P AD - Pamela Sklar Division of Psychiatric Genomics, New York, NY, USA; Department of Genetics and Genomic Sciences, New York, NY, USA; Icahn Institute for Data Science and Genomic Technology, New York, NY, USA; Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Mental Illness Research, Education and Clinical Centers, James J. Peters VA Medical Center, Bronx, NY, USA. FAU - Perlis, Roy H AU - Perlis RH AD - Harvard Medical School, Department of Psychiatry, Boston, MA, USA; Center for Experimental Drugs and Diagnostics, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA. FAU - Haggarty, Stephen J AU - Haggarty SJ AD - Center for Genomic Medicine, Chemical Neurobiology Laboratory, Departments of Neurology and Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA. FAU - Perrone-Bizzozero, Nora AU - Perrone-Bizzozero N AD - Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM, USA. FAU - Brigman, Jonathan L AU - Brigman JL AD - Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM, USA. FAU - Mellios, Nikolaos AU - Mellios N AD - Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM, USA; Autophagy Inflammation and Metabolism Center of Biomedical Research Excellence, University of New Mexico Health Sciences Center, Albuquerque, NM, USA. Electronic address: nmellios@salud.unm.edu. LA - eng GR - R01 MH125899/MH/NIMH NIH HHS/United States GR - R01 MH109897/MH/NIMH NIH HHS/United States GR - R33 MH087896/MH/NIMH NIH HHS/United States GR - F31 MH122121/MH/NIMH NIH HHS/United States GR - R01 AG067025/AG/NIA NIH HHS/United States GR - R01 AG065582/AG/NIA NIH HHS/United States GR - R56 MH119150/MH/NIMH NIH HHS/United States GR - P20 GM103472/GM/NIGMS NIH HHS/United States GR - U01 MH116442/MH/NIMH NIH HHS/United States GR - R01 AA025652/AA/NIAAA NIH HHS/United States GR - R01 AG050986/AG/NIA NIH HHS/United States GR - P20 GM121176/GM/NIGMS NIH HHS/United States GR - R01 MH106056/MH/NIMH NIH HHS/United States GR - R01 MH101454/MH/NIMH NIH HHS/United States GR - R01 AA026583/AA/NIAAA NIH HHS/United States GR - I01 BX002395/BX/BLRD VA/United States GR - R01 MH125246/MH/NIMH NIH HHS/United States GR - R01 MH110921/MH/NIMH 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 - Cell Rep JT - Cell reports JID - 101573691 RN - 0 (Homer Scaffolding Proteins) RN - 0 (RNA, Circular) SB - IM MH - Animals MH - Bipolar Disorder/metabolism MH - Gene Expression Regulation/*physiology MH - Gene Knockdown Techniques MH - Homer Scaffolding Proteins/*metabolism MH - Humans MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Prefrontal Cortex/*metabolism MH - RNA, Circular/*metabolism MH - Reversal Learning/*physiology PMC - PMC8809079 MID - NIHMS1772785 OTO - NOTNLM OT - Homer1 OT - OFC OT - bipolar disorder OT - circHomer1 OT - circRNAs OT - cognitive flexibility OT - reversal learning COIS- Declaration of interests A.K.H. and N.M. have a financial interest as co-founders of Circular Genomics Inc. and are inventors of patents related to the use of circRNAs for brain disease diagnostics (N.M.) or therapeutics (N.M. and A.K.H.). EDAT- 2022/01/20 06:00 MHDA- 2022/02/15 06:00 PMCR- 2022/02/02 CRDT- 2022/01/19 20:08 PHST- 2020/11/23 00:00 [received] PHST- 2021/06/28 00:00 [revised] PHST- 2021/12/28 00:00 [accepted] PHST- 2022/01/19 20:08 [entrez] PHST- 2022/01/20 06:00 [pubmed] PHST- 2022/02/15 06:00 [medline] PHST- 2022/02/02 00:00 [pmc-release] AID - S2211-1247(21)01797-6 [pii] AID - 10.1016/j.celrep.2021.110282 [doi] PST - ppublish SO - Cell Rep. 2022 Jan 18;38(3):110282. doi: 10.1016/j.celrep.2021.110282.