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Ewald CY, Pulous FE, Lok SWY, Pun FW, Aliper A, Ren F, Zhavoronkov A. TNIK's emerging role in cancer, metabolism, and age-related diseases. Trends Pharmacol Sci 2024; 45:478-489. [PMID: 38777670 DOI: 10.1016/j.tips.2024.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 04/12/2024] [Accepted: 04/28/2024] [Indexed: 05/25/2024]
Abstract
Traf2- and Nck-interacting kinase (TNIK) has emerged as a key regulator of pathological metabolic signaling in several diseases and is a promising drug target. Originally studied for its role in cell migration and proliferation, TNIK possesses several newly identified functions that drive the pathogenesis of multiple diseases. Specifically, we evaluate TNIK's newfound roles in cancer, metabolic disorders, and neuronal function. We emphasize the implications of TNIK signaling in metabolic signaling and evaluate the translational potential of these discoveries. We also highlight how TNIK's role in many biological processes converges upon several hallmarks of aging. We conclude by discussing the therapeutic landscape of TNIK-targeting drugs and the recent success of clinical trials targeting TNIK.
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Affiliation(s)
- Collin Y Ewald
- Laboratory of Extracellular Matrix Regeneration, Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zürich, Schwerzenbach CH-8603, Switzerland
| | - Fadi E Pulous
- Insilico Medicine US Inc., 345 Park Avenue South, 2nd Floor Suite 006, New York, NY 10010, USA
| | - Sarah Wing Yan Lok
- Insilico Medicine Hong Kong Ltd., Unit 310, 3/F, Building 8W, Hong Kong Science and Technology Park, Hong Kong, SAR, China
| | - Frank W Pun
- Insilico Medicine Hong Kong Ltd., Unit 310, 3/F, Building 8W, Hong Kong Science and Technology Park, Hong Kong, SAR, China
| | - Alex Aliper
- Insilico Medicine AI Limited, Level 6, Unit 08, Block A, IRENA HQ Building, Masdar City, Abu Dhabi, UAE
| | - Feng Ren
- Insilico Medicine Shanghai Ltd., Suite 902, Tower C, Changtai Plaza, 2889 Jinke Road, Pudong, Shanghai 201203, China
| | - Alex Zhavoronkov
- Insilico Medicine US Inc., 345 Park Avenue South, 2nd Floor Suite 006, New York, NY 10010, USA; Insilico Medicine Hong Kong Ltd., Unit 310, 3/F, Building 8W, Hong Kong Science and Technology Park, Hong Kong, SAR, China; Insilico Medicine AI Limited, Level 6, Unit 08, Block A, IRENA HQ Building, Masdar City, Abu Dhabi, UAE; Insilico Medicine Shanghai Ltd., Suite 902, Tower C, Changtai Plaza, 2889 Jinke Road, Pudong, Shanghai 201203, China; Buck Institute for Research on Aging, Novato, CA 94945, USA.
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2
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Wang M, Gu Y, Li Q, Feng B, Lv X, Zhang H, Kong Q, Dong Z, Tian X, Zhang Y. The Traf2 and NcK interacting kinase inhibitor NCB-0846 suppresses seizure activity involving the decrease of GRIA1. Genes Dis 2024; 11:100997. [PMID: 38292191 PMCID: PMC10826163 DOI: 10.1016/j.gendis.2023.03.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/09/2023] [Accepted: 03/29/2023] [Indexed: 02/01/2024] Open
Abstract
Epilepsy, one of the most common neurological disorders, is characterized by spontaneous recurrent seizures. Temporal lobe epilepsy (TLE) is one of the most common medically intractable seizure disorders. Traf2-and NcK-interacting kinase (TNIK) has recently attracted attention as a critical modulation target of many neurological and psychiatric disorders, but its role in epilepsy remains unclear. In this study, we hypothesized the involvement of TNIK in epilepsy and investigated TNIK expression in patients with intractable TLE and in a pilocarpine-induced rat model of epilepsy by western blotting, immunofluorescence, and immunohistochemistry. A pentylenetetrazole (PTZ)-induced epilepsy rat model was used to determine the effect of the TNIK inhibitor NCB-0846 on behavioral manifestations of epilepsy. Coimmunoprecipitation (Co-IP)/mass spectrometry (MS) was used to identify the potential mechanism. Through Co-IP, we detected and confirmed the main potential TNIK interactors. Subcellular fractionation was used to establish the effect of NCB-0846 on the expression of the main interactors in postsynaptic density (PSD) fractions. We found that TNIK was primarily located in neurons and decreased significantly in epilepsy model rats and TLE patients compared with controls. NCB-0846 delayed kindling progression and decreased seizure severity. Co-IP/MS identified 63 candidate TNIK interactors in rat hippocampi, notably CaMKII. Co-IP showed that TNIK might correlate with endogenous GRIA1, SYN2, PSD-95, CaMKIV, GABRG1, and GABRG2. In addition, the significant decrease in GRIA1 in hippocampal total lysate and PSDs after NCB-0846 treatment might help modify the progression of PTZ kindling. Our results suggest that TNIK contributes to epileptic pathology and is a potential antiepileptic drug target.
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Affiliation(s)
- Min Wang
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, Shandong 272000, China
| | - Yixue Gu
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing 400016, China
| | - Qiubo Li
- Department of Pediatrics, Affiliated Hospital of Jining Medical University, Jining, Shandong 272000, China
| | - Bangzhe Feng
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, Shandong 272000, China
| | - Xinke Lv
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing 400016, China
| | - Hao Zhang
- Department of Neurosurgery, Affiliated Hospital of Jining Medical University, Jining, Shandong 272000, China
| | - Qingxia Kong
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, Shandong 272000, China
| | - Zhifang Dong
- Pediatric Research Institute, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
| | - Xin Tian
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing 400016, China
| | - Yanke Zhang
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, Shandong 272000, China
- Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China
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Jiang J, Wilkinson B, Flores I, Hartel N, Mihaylov SR, Clementel VA, Flynn HR, Alkuraya FS, Ultanir S, Graham NA, Coba MP. Mutations in the postsynaptic density signaling hub TNIK disrupt PSD signaling in human models of neurodevelopmental disorders. Front Mol Neurosci 2024; 17:1359154. [PMID: 38638602 PMCID: PMC11024424 DOI: 10.3389/fnmol.2024.1359154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 03/04/2024] [Indexed: 04/20/2024] Open
Abstract
A large number of synaptic proteins have been recurrently associated with complex brain disorders. One of these proteins, the Traf and Nck interacting kinase (TNIK), is a postsynaptic density (PSD) signaling hub, with many variants reported in neurodevelopmental disorder (NDD) and psychiatric disease. While rodent models of TNIK dysfunction have abnormal spontaneous synaptic activity and cognitive impairment, the role of mutations found in patients with TNIK protein deficiency and TNIK protein kinase activity during early stages of neuronal and synapse development has not been characterized. Here, using hiPSC-derived excitatory neurons, we show that TNIK mutations dysregulate neuronal activity in human immature synapses. Moreover, the lack of TNIK protein kinase activity impairs MAPK signaling and protein phosphorylation in structural components of the PSD. We show that the TNIK interactome is enriched in NDD risk factors and TNIK lack of function disrupts signaling networks and protein interactors associated with NDD that only partially overlap to mature mouse synapses, suggesting a differential role of TNIK in immature synapsis in NDD.
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Affiliation(s)
- Jianzhi Jiang
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Brent Wilkinson
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Ilse Flores
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Nicolas Hartel
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA, United States
| | - Simeon R. Mihaylov
- Kinases and Brain Development Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Veronica A. Clementel
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Helen R. Flynn
- Proteomics Science Technology Platform, The Francis Crick Institute, London, United Kingdom
| | - Fowsan S. Alkuraya
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Sila Ultanir
- Kinases and Brain Development Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Nicholas A. Graham
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA, United States
| | - Marcelo P. Coba
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
- Department of Psychiatry and Behavioral Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
- Department of Physiology and Neuroscience, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
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Chau KM, Dominic A, Davis EL, Kotla S, Berrios ET, Fahim A, Arunesh A, Li S, Zhao D, Chen K, Davis AR, Nguyen MTH, Wang Y, Evans SE, Wang G, Cooke JP, Abe JI, Huston DP, Le NT. TNIK regulation of interferon signaling and endothelial cell response to virus infection. Front Cardiovasc Med 2024; 10:1213428. [PMID: 38264262 PMCID: PMC10803426 DOI: 10.3389/fcvm.2023.1213428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 11/27/2023] [Indexed: 01/25/2024] Open
Abstract
Background Traf2 and Nck-interacting kinase (TNIK) is known for its regulatory role in various processes within cancer cells. However, its role within endothelial cells (ECs) has remained relatively unexplored. Methods Leveraging RNA-seq data and Ingenuity Pathway Analysis (IPA), we probed the potential impact of TNIK depletion on ECs. Results Examination of RNA-seq data uncovered more than 450 Differentially Expressed Genes (DEGs) in TNIK-depleted ECs, displaying a fold change exceeding 2 with a false discovery rate (FDR) below 0.05. IPA analysis unveiled that TNIK depletion leads to the inhibition of the interferon (IFN) pathway [-log (p-value) >11], downregulation of IFN-related genes, and inhibition of Hypercytokinemia/Hyperchemokinemia [-log (p-value) >8]. The validation process encompassed qRT-PCR to evaluate mRNA expression of crucial IFN-related genes, immunoblotting to gauge STAT1 and STAT2 protein levels, and ELISA for the quantification of IFN and cytokine secretion in siTNIK-depleted ECs. These assessments consistently revealed substantial reductions upon TNIK depletion. When transducing HUVECs with replication incompetent E1-E4 deleted adenovirus expressing green fluorescent protein (Ad-GFP), it was demonstrated that TNIK depletion did not affect the uptake of Ad-GFP. Nonetheless, TNIK depletion induced cytopathic effects (CPE) in ECs transduced with wild-type human adenovirus serotype 5 (Ad-WT). Summary Our findings suggest that TNIK plays a crucial role in regulating the EC response to virus infections through modulation of the IFN pathway.
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Affiliation(s)
- Khanh M. Chau
- Department of Cardiovascular Sciences, Center for Cardiovascular Sciences, Academic Institute, Houston Methodist Research Institute, Weill Cornell Medical College, Houston, TX, United States
| | - Abishai Dominic
- Department of Cardiovascular Sciences, Center for Cardiovascular Sciences, Academic Institute, Houston Methodist Research Institute, Weill Cornell Medical College, Houston, TX, United States
- Department of Molecular and Cellular Medicine, College of Medicine Texas A&M University, College Station, TX, United States
| | - Eleanor L. Davis
- Center for Cell and Gene Therapy, Baylor College of Medicine, College Station, TX, United States
| | - Sivareddy Kotla
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Estefani Turcios Berrios
- Department of Cardiovascular Sciences, Center for Cardiovascular Sciences, Academic Institute, Houston Methodist Research Institute, Weill Cornell Medical College, Houston, TX, United States
| | - Arsany Fahim
- Center for Cell and Gene Therapy, Baylor College of Medicine, College Station, TX, United States
| | - Ashwin Arunesh
- Center for Cell and Gene Therapy, Baylor College of Medicine, College Station, TX, United States
| | - Shengyu Li
- Department of Cardiovascular Sciences, Center for Cardiovascular Sciences, Academic Institute, Houston Methodist Research Institute, Weill Cornell Medical College, Houston, TX, United States
| | - Dongyu Zhao
- Department of Molecular and Cellular Medicine, College of Medicine Texas A&M University, College Station, TX, United States
| | - Kaifu Chen
- Department of Cardiovascular Sciences, Center for Cardiovascular Sciences, Academic Institute, Houston Methodist Research Institute, Weill Cornell Medical College, Houston, TX, United States
| | - Alan R. Davis
- Center for Cell and Gene Therapy, Baylor College of Medicine, College Station, TX, United States
- Department of Cellular and Molecular Biology, Baylor College of Medicine, Houston, TX, United States
- Department of Orthopedic Surgery, Baylor College of Medicine, Houston, TX, United States
| | - Minh T. H. Nguyen
- Department of Cardiovascular Sciences, Center for Cardiovascular Sciences, Academic Institute, Houston Methodist Research Institute, Weill Cornell Medical College, Houston, TX, United States
| | - Yongxing Wang
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Scott E. Evans
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Guangyu Wang
- Department of Cardiovascular Sciences, Center for Cardiovascular Sciences, Academic Institute, Houston Methodist Research Institute, Weill Cornell Medical College, Houston, TX, United States
| | - John P. Cooke
- Department of Cardiovascular Sciences, Center for Cardiovascular Sciences, Academic Institute, Houston Methodist Research Institute, Weill Cornell Medical College, Houston, TX, United States
| | - Jun-ichi Abe
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - David P. Huston
- Department of Microbial Pathogenesis and Immunology, College of Medicine Texas A&M University, College Station, Houston, TX, United States
| | - Nhat-Tu Le
- Department of Cardiovascular Sciences, Center for Cardiovascular Sciences, Academic Institute, Houston Methodist Research Institute, Weill Cornell Medical College, Houston, TX, United States
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5
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Lasham DJ, Arta RK, Hadi AF, Egawa J, Lemmon VP, Takasugi T, Igarashi M, Someya T. Effects of MAP4K inhibition on neurite outgrowth. Mol Brain 2023; 16:79. [PMID: 37980537 PMCID: PMC10656890 DOI: 10.1186/s13041-023-01066-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 11/01/2023] [Indexed: 11/20/2023] Open
Abstract
Protein kinases are responsible for protein phosphorylation and are involved in important intracellular signal transduction pathways in various cells, including neurons; however, a considerable number of poorly characterized kinases may be involved in neuronal development. Here, we considered mitogen-activated protein kinase kinase kinase kinases (MAP4Ks), related to as candidate regulators of neurite outgrowth and synaptogenesis, by examining the effects of a selective MAP4K inhibitor PF06260933. PF06260933 treatments of the cultured neurons reduced neurite lengths, not the number of synapses, and phosphorylation of GAP43 and JNK, relative to the control. These results suggest that MAP4Ks are physiologically involved in normal neuronal development and that the resultant impaired neurite outgrowth by diminished MAP4Ks' activity, is related to psychiatric disorders.
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Affiliation(s)
- Di Ja Lasham
- Departments of Psychiatry, School of Medicine, and Graduate School of Medical and Dental Sciences, Niigata University, 757 Asahimachi Dori-Ichibancho, Chuo-Ku, Niigata, 951-8510, Japan
| | - Reza K Arta
- Departments of Psychiatry, School of Medicine, and Graduate School of Medical and Dental Sciences, Niigata University, 757 Asahimachi Dori-Ichibancho, Chuo-Ku, Niigata, 951-8510, Japan
| | - Abdul Fuad Hadi
- Departments of Psychiatry, School of Medicine, and Graduate School of Medical and Dental Sciences, Niigata University, 757 Asahimachi Dori-Ichibancho, Chuo-Ku, Niigata, 951-8510, Japan
| | - Jun Egawa
- Departments of Psychiatry, School of Medicine, and Graduate School of Medical and Dental Sciences, Niigata University, 757 Asahimachi Dori-Ichibancho, Chuo-Ku, Niigata, 951-8510, Japan.
- Departments of Neurochemistry and Molecular Cell Biology, School of Medicine, and Graduate School of Medical and Dental Sciences, Niigata University, 757 Asahimachi Dori-Ichibancho, Chuo-Ku, Niigata, 951-8510, Japan.
| | - Vance P Lemmon
- Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, USA
- Institute for Data Science and Computing, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Toshiyuki Takasugi
- Departments of Neurochemistry and Molecular Cell Biology, School of Medicine, and Graduate School of Medical and Dental Sciences, Niigata University, 757 Asahimachi Dori-Ichibancho, Chuo-Ku, Niigata, 951-8510, Japan
| | - Michihiro Igarashi
- Departments of Neurochemistry and Molecular Cell Biology, School of Medicine, and Graduate School of Medical and Dental Sciences, Niigata University, 757 Asahimachi Dori-Ichibancho, Chuo-Ku, Niigata, 951-8510, Japan.
| | - Toshiyuki Someya
- Departments of Psychiatry, School of Medicine, and Graduate School of Medical and Dental Sciences, Niigata University, 757 Asahimachi Dori-Ichibancho, Chuo-Ku, Niigata, 951-8510, Japan
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6
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Lin JR, Zhao Y, Jabalameli MR, Nguyen N, Mitra J, Swillen A, Vorstman JAS, Chow EWC, van den Bree M, Emanuel BS, Vermeesch JR, Owen MJ, Williams NM, Bassett AS, McDonald-McGinn DM, Gur RE, Bearden CE, Morrow BE, Lachman HM, Zhang ZD. Rare coding variants as risk modifiers of the 22q11.2 deletion implicate postnatal cortical development in syndromic schizophrenia. Mol Psychiatry 2023; 28:2071-2080. [PMID: 36869225 DOI: 10.1038/s41380-023-02009-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 02/15/2023] [Accepted: 02/21/2023] [Indexed: 03/05/2023]
Abstract
22q11.2 deletion is one of the strongest known genetic risk factors for schizophrenia. Recent whole-genome sequencing of schizophrenia cases and controls with this deletion provided an unprecedented opportunity to identify risk modifying genetic variants and investigate their contribution to the pathogenesis of schizophrenia in 22q11.2 deletion syndrome. Here, we apply a novel analytic framework that integrates gene network and phenotype data to investigate the aggregate effects of rare coding variants and identified modifier genes in this etiologically homogenous cohort (223 schizophrenia cases and 233 controls of European descent). Our analyses revealed significant additive genetic components of rare nonsynonymous variants in 110 modifier genes (adjusted P = 9.4E-04) that overall accounted for 4.6% of the variance in schizophrenia status in this cohort, of which 4.0% was independent of the common polygenic risk for schizophrenia. The modifier genes affected by rare coding variants were enriched with genes involved in synaptic function and developmental disorders. Spatiotemporal transcriptomic analyses identified an enrichment of coexpression between modifier and 22q11.2 genes in cortical brain regions from late infancy to young adulthood. Corresponding gene coexpression modules are enriched with brain-specific protein-protein interactions of SLC25A1, COMT, and PI4KA in the 22q11.2 deletion region. Overall, our study highlights the contribution of rare coding variants to the SCZ risk. They not only complement common variants in disease genetics but also pinpoint brain regions and developmental stages critical to the etiology of syndromic schizophrenia.
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Affiliation(s)
- Jhih-Rong Lin
- Department of Genetics, Albert Einstein College of Medicine, New York, NY, USA
| | - Yingjie Zhao
- Department of Genetics, Albert Einstein College of Medicine, New York, NY, USA
| | - M Reza Jabalameli
- Department of Genetics, Albert Einstein College of Medicine, New York, NY, USA
| | - Nha Nguyen
- Department of Genetics, Albert Einstein College of Medicine, New York, NY, USA
| | - Joydeep Mitra
- Department of Genetics, Albert Einstein College of Medicine, New York, NY, USA
| | - Ann Swillen
- Department of Human Genetics, KU Leuven, Leuven, Belgium
| | | | - Eva W C Chow
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Marianne van den Bree
- MRC Centre for Neuropsychiatric Genetics and Genomics, Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, Cardiff, UK
| | - Beverly S Emanuel
- Division of Human Genetics and 22q and You Center, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | | | - Michael J Owen
- MRC Centre for Neuropsychiatric Genetics and Genomics, Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, Cardiff, UK
| | - Nigel M Williams
- MRC Centre for Neuropsychiatric Genetics and Genomics, Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, Cardiff, UK
| | - Anne S Bassett
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Donna M McDonald-McGinn
- Division of Human Genetics and 22q and You Center, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Raquel E Gur
- Department of Psychiatry and Lifespan Brain Institute, Penn Medicine-CHOP, University of Pennsylvania, Philadelphia, PA, USA
| | - Carrie E Bearden
- Departments of Psychiatry and Biobehavioral Sciences and Psychology, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA, USA
| | - Bernice E Morrow
- Department of Genetics, Albert Einstein College of Medicine, New York, NY, USA
| | - Herbert M Lachman
- Department of Genetics, Albert Einstein College of Medicine, New York, NY, USA
| | - Zhengdong D Zhang
- Department of Genetics, Albert Einstein College of Medicine, New York, NY, USA.
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7
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Wang AL, Chao OY, Nikolaus S, Lamounier-Zepter V, Hollenberg CP, Lubec G, Trossbach SV, Korth C, Huston JP. Disrupted-in-schizophrenia 1 Protein Misassembly Impairs Cognitive Flexibility and Social Behaviors in a Transgenic Rat Model. Neuroscience 2022; 493:41-51. [PMID: 35461978 DOI: 10.1016/j.neuroscience.2022.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 04/12/2022] [Accepted: 04/13/2022] [Indexed: 11/19/2022]
Abstract
Alterations in cognitive functions, social behaviors and stress reactions are commonly diagnosed in chronic mental illnesses (CMI). Animal models expressing mutant genes associated to CMI represent either rare mutations or those contributing only minimally to genetic risk. Non-genetic causes of CMI can be modeled by disturbing downstream signaling pathways, for example through inducing protein misassembly or aggregation. The Disrupted-in-Schizophrenia 1 (DISC1) gene was identified to be disrupted and thereby haploinsufficient in a large pedigree where it associated to CMI. The DISC1 protein misassembles to an insoluble protein in a subset of CMI patients and this has been modeled in a rat (tgDISC1 rat) where the full-length, non mutant human transgene was overexpressed and cognitive impairments were observed. Here, we investigated the scope of effects of DISC1 protein misassembly by investigating spatial memory, social behavior and stress resilience. In water maze tasks, the tgDISC1 rats showed intact spatial learning and memory, but were deficient in flexible adaptation to spatial reversal learning compared to littermate controls. They also displayed less social interaction. Additionally, there was a trend towards increased corticosterone levels after restraint stress in the tgDISC1 rats. Our findings suggest that DISC1 protein misassembly leads to disturbances of cognitive flexibility and social behaviors, and might also be involved in stress sensitization. Since the observed behavioral features resemble symptoms of CMI, the tgDISC1 rat may be a valuable model for the investigation of cognitive, social and - possibly - also stress-related symptoms of major mental illnesses.
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Affiliation(s)
- An-Li Wang
- Center for Behavioral Neuroscience, Institute of Experimental Psychology, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany.
| | - Owen Y Chao
- Department of Biomedical Sciences, University of Minnesota Medical School, Duluth, MN, USA.
| | - Susanne Nikolaus
- Department of Nuclear Medicine, University Hospital Düsseldorf, Heinrich-Heine University, Düsseldorf, Germany.
| | | | - Cornelis P Hollenberg
- Institute of Microbiology, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany.
| | - Gert Lubec
- Department of Neuroproteomics, Paracelsus Private Medical University, Salzburg, Austria.
| | - Svenja V Trossbach
- Department of Neuropathology, University Hospital Düsseldorf, Düsseldorf, Germany.
| | - Carsten Korth
- Department of Neuropathology, University Hospital Düsseldorf, Düsseldorf, Germany.
| | - Joseph P Huston
- Center for Behavioral Neuroscience, Institute of Experimental Psychology, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany.
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8
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Buchl SC, Hanquier Z, Haak AJ, Thomason YM, Huebert RC, Shah VH, Maiers JL. Traf2 and NCK Interacting Kinase Is a Critical Regulator of Procollagen I Trafficking and Hepatic Fibrogenesis in Mice. Hepatol Commun 2022; 6:593-609. [PMID: 34677004 PMCID: PMC8870049 DOI: 10.1002/hep4.1835] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 12/20/2022] Open
Abstract
Hepatic fibrosis is driven by deposition of matrix proteins following liver injury. Hepatic stellate cells (HSCs) drive fibrogenesis, producing matrix proteins, including procollagen I, which matures into collagen I following secretion. Disrupting intracellular procollagen processing and trafficking causes endoplasmic reticulum stress and stress-induced HSC apoptosis and thus is an attractive antifibrotic strategy. We designed an immunofluorescence-based small interfering RNA (siRNA) screen to identify procollagen I trafficking regulators, hypothesizing that these proteins could serve as antifibrotic targets. A targeted siRNA screen was performed using immunofluorescence to detect changes in intracellular procollagen I. Tumor necrosis factor receptor associated factor 2 and noncatalytic region of tyrosine kinase-interacting kinase (TNIK) was identified and interrogated in vitro and in vivo using the TNIK kinase inhibitor NCB-0846 or RNA interference-mediated knockdown. Our siRNA screen identified nine genes whose knockdown promoted procollagen I retention, including the serine/threonine kinase TNIK. Genetic deletion or pharmacologic inhibition of TNIK through the small molecule inhibitor NCB-0846 disrupted procollagen I trafficking and secretion without impacting procollagen I expression. To investigate the role of TNIK in liver fibrogenesis, we analyzed human and murine livers, finding elevated TNIK expression in human cirrhotic livers and increased TNIK expression and kinase activity in both fibrotic mouse livers and activated primary human HSCs. Finally, we tested whether inhibition of TNIK kinase activity could limit fibrogenesis in vivo. Mice receiving NCB-0846 displayed reduced CCl4 -induced fibrogenesis compared to CCl4 alone, although α-smooth muscle actin levels were unaltered. Conclusions: Our siRNA screen effectively identified TNIK as a key kinase involved in procollagen I trafficking in vitro and hepatic fibrogenesis in vivo.
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Affiliation(s)
- Samuel C Buchl
- Division of Gastroenterology and HepatologyMayo ClinicRochesterMNUSA
| | - Zachary Hanquier
- Department of Medical and Molecular GeneticsIndiana University School of MedicineIndianapolisINUSA
| | - Andrew J Haak
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMNUSA
| | - Yvonne M Thomason
- Division of GastroenterologyIndiana University School of MedicineIndianapolisINUSA
| | - Robert C Huebert
- Division of Gastroenterology and HepatologyMayo ClinicRochesterMNUSA
| | - Vijay H Shah
- Division of Gastroenterology and HepatologyMayo ClinicRochesterMNUSA
| | - Jessica L Maiers
- Division of GastroenterologyIndiana University School of MedicineIndianapolisINUSA
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9
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Adeyelu T, Shrestha A, Adeniyi PA, Lee CC, Ogundele OM. CA1 Spike Timing is Impaired in the 129S Inbred Strain During Cognitive Tasks. Neuroscience 2022; 484:119-138. [PMID: 34800576 PMCID: PMC8844212 DOI: 10.1016/j.neuroscience.2021.11.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 11/08/2021] [Accepted: 11/10/2021] [Indexed: 01/16/2023]
Abstract
A spontaneous mutation of the disrupted in schizophrenia 1 (Disc1) gene is carried by the 129S inbred mouse strain. Truncated DISC1 protein in 129S mouse synapses impairs the scaffolding of excitatory postsynaptic receptors and leads to progressive spine dysgenesis. In contrast, C57BL/6 inbred mice carry the wild-type Disc1 gene and exhibit more typical cognitive performance in spatial exploration and executive behavioral tests. Because of the innate Disc1 mutation, adult 129S inbred mice exhibit the behavioral phenotypes of outbred B6 Disc1 knockdown (Disc1-/-) or Disc1-L-100P mutant strains. Recent studies in Disc1-/- and L-100P mice have shown that impaired excitation-driven interneuron activity and low hippocampal theta power underlie the behavioral phenotypes that resemble human depression and schizophrenia. The current study compared the firing rate and connectivity profile of putative neurons in the CA1 of freely behaving inbred 129S and B6 mice, which have mutant and wild-type Disc1 genes, respectively. In cognitive behavioral tests, 129S mice had lower exploration scores than B6 mice. Furthermore, the mean firing rate for 129S putative pyramidal (pyr) cells and interneurons (int) was significantly lower than that for B6 CA1 neurons sampled during similar tasks. Analysis of pyr/int connectivity revealed a significant delay in synaptic transmission for 129S putative pairs. Sampled 129S pyr/int pairs also had lower detectability index scores than B6 putative pairs. Therefore, the spontaneous Disc1 mutation in the 129S strain attenuates the firing of putative pyr CA1 neurons and impairs spike timing fidelity during cognitive tasks.
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Affiliation(s)
- Tolulope Adeyelu
- Department of Comparative Biomedical Sciences, Louisiana State University School of Veterinary Medicine. Baton Rouge, LA70803, Louisiana
| | - Amita Shrestha
- Department of Comparative Biomedical Sciences, Louisiana State University School of Veterinary Medicine. Baton Rouge, LA70803, Louisiana
| | - Philip A. Adeniyi
- Department of Comparative Biomedical Sciences, Louisiana State University School of Veterinary Medicine. Baton Rouge, LA70803, Louisiana
| | - Charles C. Lee
- Department of Comparative Biomedical Sciences, Louisiana State University School of Veterinary Medicine. Baton Rouge, LA70803, Louisiana
| | - Olalekan M. Ogundele
- Department of Comparative Biomedical Sciences, Louisiana State University School of Veterinary Medicine. Baton Rouge, LA70803, Louisiana
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10
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Mutations in DISC1 alter IP 3R and voltage-gated Ca 2+ channel functioning, implications for major mental illness. Neuronal Signal 2021; 5:NS20180122. [PMID: 34956649 PMCID: PMC8663806 DOI: 10.1042/ns20180122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 10/26/2021] [Accepted: 11/08/2021] [Indexed: 12/16/2022] Open
Abstract
Disrupted in Schizophrenia 1 (DISC1) participates in a wide variety of
developmental processes of central neurons. It also serves critical roles that
underlie cognitive functioning in adult central neurons. Here we summarize
DISC1’s general properties and discuss its use as a model system for
understanding major mental illnesses (MMIs). We then discuss the cellular
actions of DISC1 that involve or regulate Ca2+ signaling in adult
central neurons. In particular, we focus on the tethering role DISC1 plays in
transporting RNA particles containing Ca2+ channel subunit RNAs,
including IP3R1, CACNA1C and CACNA2D1, and in transporting mitochondria into
dendritic and axonal processes. We also review DISC1’s role in modulating
IP3R1 activity within mitochondria-associated ER membrane (MAM).
Finally, we discuss DISC1-glycogen synthase kinase 3β (GSK3β)
signaling that regulates functional expression of voltage-gated Ca2+
channels (VGCCs) at central synapses. In each case, DISC1 regulates the movement
of molecules that impact Ca2+ signaling in neurons.
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11
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Matta J, Dobrino D, Howard S, Yeboah D, Kopel J, El-Manzalawy Y, Obafemi-Ajayi T. A PheWAS Model of Autism Spectrum Disorder. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2021; 2021:2110-2114. [PMID: 34891705 DOI: 10.1109/embc46164.2021.9629533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Children with Autism Spectrum Disorder (ASD) exhibit a wide diversity in type, number, and severity of social deficits as well as communicative and cognitive difficulties. It is a challenge to categorize the phenotypes of a particular ASD patient with their unique genetic variants. There is a need for a better understanding of the connections between genotype information and the phenotypes to sort out the heterogeneity of ASD. In this study, single nucleotide polymorphism (SNP) and phenotype data obtained from a simplex ASD sample are combined using a PheWAS-inspired approach to construct a phenotype-phenotype network. The network is clustered, yielding groups of etiologically related phenotypes. These clusters are analyzed to identify relevant genes associated with each set of phenotypes. The results identified multiple discriminant SNPs associated with varied phenotype clusters such as ASD aberrant behavior (self-injury, compulsiveness and hyperactivity), as well as IQ and language skills. Overall, these SNPs were linked to 22 significant genes. An extensive literature search revealed that eight of these are known to have strong evidence of association with ASD. The others have been linked to related disorders such as mental conditions, cognition, and social functioning.Clinical relevance- This study further informs on connections between certain groups of ASD phenotypes and their unique genetic variants. Such insight regarding the heterogeneity of ASD would support clinicians to advance more tailored interventions and improve outcomes for ASD patients.
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12
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Yuan R, Li Y, Fu Y, Ning A, Wang D, Zhang R, Yu S, Xu Q. TNIK influence the effects of antipsychotics on Wnt/β-catenin signaling pathway. Psychopharmacology (Berl) 2021; 238:3283-3292. [PMID: 34350475 DOI: 10.1007/s00213-021-05943-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 07/19/2021] [Indexed: 10/20/2022]
Abstract
RationaleTraf2- and Nck-interacting kinase (TNIK), a member of germinal center kinase (GCK) family, has been implicated as a risk factor in schizophrenia and bipolar disorder as well as the action of antipsychotics. TNIK is an essential activator of Wnt/β-catenin signaling pathway which has been identified involved in the mechanism underlying the effects of antipsychotics. Thus, the effects of TNIK on antipsychotics may be achieved by influencing Wnt/β-catenin signaling pathway proteins.Objectives and methodsIn the current study, the effects of up- or downregulated TNIK on β-catenin, T-cell factor 4 (TCF-4), glycogen synthase kinase-3β (GSK3β), and phosphorylated GSK3β (p-GSK3β) were examined in the human glioma U251 cells. Then, we observed the effects of antipsychotics (clozapine and risperidone) on the above proteins and evaluated the role of differentially expressed TNIK on antipsychotic-treated cell groups.ResultsThe result showed that clozapine treatment decreased β-catenin and TCF-4 levels in U251 cells, and risperidone had the similar effects on β-catenin and p-GSK3β. The downregulated TNIK using siRNA impeded the regulation of antipsychotics on Wnt pathway proteins via increasing the expression levels of TCF-4, β-catenin, or p-GSK3β, whereas the upregulated TNIK made no significant change.ConclusionsThe influence of TNIK on the effects of antipsychotics may be partly through Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Ruixue Yuan
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yaojing Li
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yingmei Fu
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ailing Ning
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dongxiang Wang
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ran Zhang
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shunying Yu
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Qingqing Xu
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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13
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Walczyk-Mooradally A, Holborn J, Singh K, Tyler M, Patnaik D, Wesseling H, Brandon NJ, Steen J, Graether SP, Haggarty SJ, Lalonde J. Phosphorylation-dependent control of Activity-regulated cytoskeleton-associated protein (Arc) protein by TNIK. J Neurochem 2021. [PMID: 34077555 DOI: 10.1111/jnc.15077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Activity-regulated cytoskeleton-associated protein (Arc) is an immediate early gene product that support neuroplastic changes important for cognitive function and memory formation. As a protein with homology to the retroviral Gag protein, a particular characteristic of Arc is its capacity to self-assemble into virus-like capsids that can package mRNAs and transfer those transcripts to other cells. Although a lot has been uncovered about the contributions of Arc to neuron biology and behavior, very little is known about how different functions of Arc are coordinately regulated both temporally and spatially in neurons. The answer to this question we hypothesized must involve the occurrence of different protein post-translational modifications acting to confer specificity. In this study, we used mass spectrometry and sequence prediction strategies to map novel Arc phosphorylation sites. Our approach led us to recognize serine 67 (S67) and threonine 278 (T278) as residues that can be modified by TNIK, which is a kinase abundantly expressed in neurons that shares many functional overlaps with Arc and has, along with its interacting proteins such as the NMDA receptor, and been implicated as a risk factor for psychiatric disorders. Furthermore, characterization of each residue using site-directed mutagenesis to create S67 and T278 mutant variants revealed that TNIK action at those amino acids can strongly influence Arc's subcellular distribution and self-assembly as capsids. Together, our findings reveal an unsuspected connection between Arc and TNIK. Better understanding of the interplay between these two proteins in neuronal cells could lead to new insights about apparition and progression of psychiatric disorders. Cover Image for this issue: https://doi.org/10.1111/jnc.15077.
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Affiliation(s)
| | - Jennifer Holborn
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, Canada
| | - Karamjeet Singh
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, Canada
| | - Marshall Tyler
- Massachusetts General Hospital, Centre for Genomic Medicine, Boston, MA, USA
| | - Debasis Patnaik
- Massachusetts General Hospital, Centre for Genomic Medicine, Boston, MA, USA
| | - Hendrik Wesseling
- Boston Children's Hospital, F.M. Kirby Center for Neurobiology, Harvard Medical School, Boston, MA, USA
| | - Nicholas J Brandon
- Neuroscience, BioPharmaceuticals R&D, AstraZeneca Boston, Waltham, MA, USA
| | - Judith Steen
- Boston Children's Hospital, F.M. Kirby Center for Neurobiology, Harvard Medical School, Boston, MA, USA
| | - Steffen P Graether
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, Canada
| | - Stephen J Haggarty
- Massachusetts General Hospital, Centre for Genomic Medicine, Boston, MA, USA
| | - Jasmin Lalonde
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, Canada
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14
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Walczyk-Mooradally A, Holborn J, Singh K, Tyler M, Patnaik D, Wesseling H, Brandon NJ, Steen J, Graether SP, Haggarty SJ, Lalonde J. Phosphorylation-dependent control of Activity-regulated cytoskeleton-associated protein (Arc) protein by TNIK. J Neurochem 2021; 158:1058-1073. [PMID: 34077555 DOI: 10.1111/jnc.15440] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/24/2021] [Accepted: 05/24/2021] [Indexed: 12/21/2022]
Abstract
Activity-regulated cytoskeleton-associated protein (Arc) is an immediate early gene product that support neuroplastic changes important for cognitive function and memory formation. As a protein with homology to the retroviral Gag protein, a particular characteristic of Arc is its capacity to self-assemble into virus-like capsids that can package mRNAs and transfer those transcripts to other cells. Although a lot has been uncovered about the contributions of Arc to neuron biology and behavior, very little is known about how different functions of Arc are coordinately regulated both temporally and spatially in neurons. The answer to this question we hypothesized must involve the occurrence of different protein post-translational modifications acting to confer specificity. In this study, we used mass spectrometry and sequence prediction strategies to map novel Arc phosphorylation sites. Our approach led us to recognize serine 67 (S67) and threonine 278 (T278) as residues that can be modified by TNIK, which is a kinase abundantly expressed in neurons that shares many functional overlaps with Arc and has, along with its interacting proteins such as the NMDA receptor, and been implicated as a risk factor for psychiatric disorders. Furthermore, characterization of each residue using site-directed mutagenesis to create S67 and T278 mutant variants revealed that TNIK action at those amino acids can strongly influence Arc's subcellular distribution and self-assembly as capsids. Together, our findings reveal an unsuspected connection between Arc and TNIK. Better understanding of the interplay between these two proteins in neuronal cells could lead to new insights about apparition and progression of psychiatric disorders.
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Affiliation(s)
| | - Jennifer Holborn
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, Canada
| | - Karamjeet Singh
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, Canada
| | - Marshall Tyler
- Massachusetts General Hospital, Centre for Genomic Medicine, Boston, MA, USA
| | - Debasis Patnaik
- Massachusetts General Hospital, Centre for Genomic Medicine, Boston, MA, USA
| | - Hendrik Wesseling
- Boston Children's Hospital, F.M. Kirby Center for Neurobiology, Harvard Medical School, Boston, MA, USA
| | - Nicholas J Brandon
- Neuroscience, BioPharmaceuticals R&D, AstraZeneca Boston, Waltham, MA, USA
| | - Judith Steen
- Boston Children's Hospital, F.M. Kirby Center for Neurobiology, Harvard Medical School, Boston, MA, USA
| | - Steffen P Graether
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, Canada
| | - Stephen J Haggarty
- Massachusetts General Hospital, Centre for Genomic Medicine, Boston, MA, USA
| | - Jasmin Lalonde
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, Canada
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15
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Yoon J, Mao Y. Dissecting Molecular Genetic Mechanisms of 1q21.1 CNV in Neuropsychiatric Disorders. Int J Mol Sci 2021; 22:5811. [PMID: 34071723 PMCID: PMC8197994 DOI: 10.3390/ijms22115811] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/23/2021] [Accepted: 05/25/2021] [Indexed: 11/17/2022] Open
Abstract
Pathogenic copy number variations (CNVs) contribute to the etiology of neurodevelopmental/neuropsychiatric disorders (NDs). Increased CNV burden has been found to be critically involved in NDs compared with controls in clinical studies. The 1q21.1 CNVs, rare and large chromosomal microduplications and microdeletions, are detected in many patients with NDs. Phenotypes of duplication and deletion appear at the two ends of the spectrum. Microdeletions are predominant in individuals with schizophrenia (SCZ) and microcephaly, whereas microduplications are predominant in individuals with autism spectrum disorder (ASD) and macrocephaly. However, its complexity hinders the discovery of molecular pathways and phenotypic networks. In this review, we summarize the recent genome-wide association studies (GWASs) that have identified candidate genes positively correlated with 1q21.1 CNVs, which are likely to contribute to abnormal phenotypes in carriers. We discuss the clinical data implicated in the 1q21.1 genetic structure that is strongly associated with neurodevelopmental dysfunctions like cognitive impairment and reduced synaptic plasticity. We further present variations reported in the phenotypic severity, genomic penetrance and inheritance.
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Affiliation(s)
| | - Yingwei Mao
- Department of Biology, Eberly College of Science, Pennsylvania State University, University Park, PA 16802, USA;
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16
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Wang X, Ye F, Wen Z, Guo Z, Yu C, Huang WK, Rojas Ringeling F, Su Y, Zheng W, Zhou G, Christian KM, Song H, Zhang M, Ming GL. Structural interaction between DISC1 and ATF4 underlying transcriptional and synaptic dysregulation in an iPSC model of mental disorders. Mol Psychiatry 2021; 26:1346-1360. [PMID: 31444471 PMCID: PMC8444148 DOI: 10.1038/s41380-019-0485-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 04/01/2019] [Accepted: 05/17/2019] [Indexed: 01/01/2023]
Abstract
Psychiatric disorders are a collection of heterogeneous mental disorders arising from a contribution of genetic and environmental insults, many of which molecularly converge on transcriptional dysregulation, resulting in altered synaptic functions. The underlying mechanisms linking the genetic lesion and functional phenotypes remain largely unknown. Patient iPSC-derived neurons with a rare frameshift DISC1 (Disrupted-in-schizophrenia 1) mutation have previously been shown to exhibit aberrant gene expression and deficits in synaptic functions. How DISC1 regulates gene expression is largely unknown. Here we show that Activating Transcription Factor 4 (ATF4), a DISC1 binding partner, is more abundant in the nucleus of DISC1 mutant human neurons and exhibits enhanced binding to a collection of dysregulated genes. Functionally, overexpressing ATF4 in control neurons recapitulates deficits seen in DISC1 mutant neurons, whereas transcriptional and synaptic deficits are rescued in DISC1 mutant neurons with CRISPR-mediated heterozygous ATF4 knockout. By solving the high-resolution atomic structure of the DISC1-ATF4 complex, we show that mechanistically, the mutation of DISC1 disrupts normal DISC1-ATF4 interaction, and results in excessive ATF4 binding to DNA targets and deregulated gene expression. Together, our study identifies the molecular and structural basis of an DISC1-ATF4 interaction underlying transcriptional and synaptic dysregulation in an iPSC model of mental disorders.
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Affiliation(s)
- Xinyuan Wang
- School of Basic Medical Sciences, Fudan University, 200032, Shanghai, China
- Department of Neuroscience and Mahoney Institute for Neurosciences, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Fei Ye
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- Center of Systems Biology and Human Health, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Zhexing Wen
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, 30322, USA
| | - Ziyuan Guo
- Department of Neuroscience and Mahoney Institute for Neurosciences, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Chuan Yu
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Wei-Kai Huang
- Department of Neuroscience and Mahoney Institute for Neurosciences, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Pathology Graduate Program, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Francisca Rojas Ringeling
- The Human Genetics Pre-doctoral Program, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Yijing Su
- Department of Neuroscience and Mahoney Institute for Neurosciences, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Wei Zheng
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Guomin Zhou
- School of Basic Medical Sciences, Fudan University, 200032, Shanghai, China
| | - Kimberly M Christian
- Department of Neuroscience and Mahoney Institute for Neurosciences, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Hongjun Song
- Department of Neuroscience and Mahoney Institute for Neurosciences, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- Department of Cell and Developmental Biology, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- Institute for Regenerative Medicine, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- The Epigenetics Institute, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.
| | - Mingjie Zhang
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
- Center of Systems Biology and Human Health, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
| | - Guo-Li Ming
- Department of Neuroscience and Mahoney Institute for Neurosciences, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- Department of Cell and Developmental Biology, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- Institute for Regenerative Medicine, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- Department of Psychiatry, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.
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17
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Yang Z, Xiao X, Chen R, Xu X, Kong W, Zhang T. Disc1 gene down-regulation impaired synaptic plasticity and recognition memory via disrupting neural activity in mice. Brain Res Bull 2021; 171:84-90. [PMID: 33745948 DOI: 10.1016/j.brainresbull.2021.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 02/25/2021] [Accepted: 03/15/2021] [Indexed: 10/21/2022]
Abstract
The gene of Disrupted-in-schizophrenia 1 (Disc1) is closely related to mental diseases with cognitive deficits, but there are few studies on the changes in neural oscillations and recognition memory. Neural oscillations plays a key role in the nervous system in a dynamic form, which is closely related to advanced cognitive activities such as information processing and memory consolidation. Hence, we aimed to investigate if Disc1 knockdown disrupted the normal pattern of neural activities in the mouse hippocampus network, and determined if quantitative neural oscillation approach could be a potential diagnostic tool for mental disorders. In the study, we reported that Disc1 gene, downregulated by short-hairpin RNA (shRNA), not only induced anxiety-like behavior and sociability impairment but also damaged both synaptic plasticity and recognition memory in mice. Moreover, Disc1 knockdown mice exhibited evidently abnormal power spectral distributions, reduced phase synchronizations, and decreased phase-amplitude coupling strength compared to that of normal animals. In addition, transcriptome analyses showed that there were clearly transcriptional changes in Disc1 knockdown mice. Altogether, our findings suggest that the abnormal pattern of neural activities in the hippocampus network disrupts information processing and finally leads to the impairments of synaptic plasticity and recognition in Disc1 knockdown mice, which are possibly associated with the obstruction of neurotransmitter transmission. Importantly, the data imply that the analysis of neural oscillation pattern provides a potential diagnosis approach for mental disorders.
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Affiliation(s)
- Ze Yang
- College of Life Sciences and Key Laboratory of Bioactive Materials Ministry of Education, Nankai University, 300071, Tianjin, PR China
| | - Xi Xiao
- College of Life Sciences and Key Laboratory of Bioactive Materials Ministry of Education, Nankai University, 300071, Tianjin, PR China; Tianjin International Joint Research Center for Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, 300072, Tianjin, PR China
| | - Runwen Chen
- College of Life Sciences and Key Laboratory of Bioactive Materials Ministry of Education, Nankai University, 300071, Tianjin, PR China
| | - Xinxin Xu
- College of Life Sciences and Key Laboratory of Bioactive Materials Ministry of Education, Nankai University, 300071, Tianjin, PR China
| | - Wanzeng Kong
- Key Laboratory of Brain Machine Collaborative Intelligence of Zhejiang Province, Hangzhou Dianzi University, 310018, Hangzhou, PR China.
| | - Tao Zhang
- College of Life Sciences and Key Laboratory of Bioactive Materials Ministry of Education, Nankai University, 300071, Tianjin, PR China.
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18
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Nie FY, Zhang MR, Shang SS, Zhang QX, Zhang R, Chen P, Ma J. Methylome-wide association study of first-episode schizophrenia reveals a hypermethylated CpG site in the promoter region of the TNIK susceptibility gene. Prog Neuropsychopharmacol Biol Psychiatry 2021; 106:110081. [PMID: 32853717 DOI: 10.1016/j.pnpbp.2020.110081] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 08/16/2020] [Accepted: 08/18/2020] [Indexed: 12/11/2022]
Abstract
Accumulating evidence suggests that epigenetics plays an important role in the etiology of schizophrenia. Here, we performed a methylome-wide association study (MWAS) of first-onset schizophrenia patients and controls from the Han Chinese population using microarray technology. The DNA methylation profiles revealed 4494 differentially methylated CpG sites. Gene ontology (GO) analysis showed that the functions of differentially methylated genes were primarily involved in enzymatic activity, cytoskeleton organization and cell adhesion, and the TNIK (encoding TRAF2- and NCK-interacting kinase) gene was enriched in most of these terms. By combining the MWAS results with those of previous genome-wide association studies (GWASs), we identified 72 candidate genes located in 49 human genome loci. Among the overlapping genes, the most significantly methylated CpG sites were in the transcriptional start site (TSS) 200 region (cg21413905, Punadjusted = 3.20 × 10-5) of TNIK. TNIK was listed in the top 50 differentially methylated loci. The results of pyrosequencing and TNIK mRNA expression were consistent with those of the microarray study. Bioinformatics analyses, dual-luciferase reporter assays and chromatin immunoprecipitation (ChIP) studies showed that TNIK interacted with genes associated with schizophrenia and NRF1 was identified as a novel transcription factor (TF) that binds to TNIK in its TSS200 region. Thus, the regulatory function of NRF1 may be influenced by the status of the methylated CpG site in this region. In summary, our study provides new insights into the epigenetic mechanisms that regulate schizophrenia. Studies of the functions of TNIK methylation should be performed in vitro and in vivo to provide a better understanding of the pathophysiology of schizophrenia.
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Affiliation(s)
- Fa-Yi Nie
- School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, China; Medical Research Center, Xi'an No.3 Hospital, Xi'an, Shaanxi 710018, China
| | - Miao-Ran Zhang
- Department of Genetics, College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, China
| | - Shan-Shan Shang
- School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, China
| | - Qiao-Xia Zhang
- School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, China
| | - Rui Zhang
- Translational Medicine Center, Hong Hui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, China
| | - Peng Chen
- Department of Genetics, College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, China.
| | - Jie Ma
- School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, China; Medical Research Center, Xi'an No.3 Hospital, Xi'an, Shaanxi 710018, China.
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19
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Functional brain defects in a mouse model of a chromosomal t(1;11) translocation that disrupts DISC1 and confers increased risk of psychiatric illness. Transl Psychiatry 2021; 11:135. [PMID: 33608504 PMCID: PMC7895946 DOI: 10.1038/s41398-021-01256-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 11/24/2020] [Accepted: 01/22/2021] [Indexed: 12/17/2022] Open
Abstract
A balanced t(1;11) translocation that directly disrupts DISC1 is linked to schizophrenia and affective disorders. We previously showed that a mutant mouse, named Der1, recapitulates the effect of the translocation upon DISC1 expression. Here, RNAseq analysis of Der1 mouse brain tissue found enrichment for dysregulation of the same genes and molecular pathways as in neuron cultures generated previously from human t(1;11) translocation carriers via the induced pluripotent stem cell route. DISC1 disruption therefore apparently accounts for a substantial proportion of the effects of the t(1;11) translocation. RNAseq and pathway analysis of the mutant mouse predicts multiple Der1-induced alterations converging upon synapse function and plasticity. Synaptosome proteomics confirmed that the Der1 mutation impacts synapse composition, and electrophysiology found reduced AMPA:NMDA ratio in hippocampal neurons, indicating changed excitatory signalling. Moreover, hippocampal parvalbumin-positive interneuron density is increased, suggesting that the Der1 mutation affects inhibitory control of neuronal circuits. These phenotypes predict that neurotransmission is impacted at many levels by DISC1 disruption in human t(1;11) translocation carriers. Notably, genes implicated in schizophrenia, depression and bipolar disorder by large-scale genetic studies are enriched among the Der1-dysregulated genes, just as we previously observed for the t(1;11) translocation carrier-derived neurons. Furthermore, RNAseq analysis predicts that the Der1 mutation primarily targets a subset of cell types, pyramidal neurons and interneurons, previously shown to be vulnerable to the effects of common schizophrenia-associated genetic variants. In conclusion, DISC1 disruption by the t(1;11) translocation may contribute to the psychiatric disorders of translocation carriers through commonly affected pathways and processes in neurotransmission.
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Cheffer A, Flitsch LJ, Krutenko T, Röderer P, Sokhranyaeva L, Iefremova V, Hajo M, Peitz M, Schwarz MK, Brüstle O. Human stem cell-based models for studying autism spectrum disorder-related neuronal dysfunction. Mol Autism 2020; 11:99. [PMID: 33308283 PMCID: PMC7733257 DOI: 10.1186/s13229-020-00383-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 09/22/2020] [Indexed: 12/13/2022] Open
Abstract
The controlled differentiation of pluripotent stem cells (PSCs) into neurons and glia offers a unique opportunity to study early stages of human central nervous system development under controlled conditions in vitro. With the advent of cell reprogramming and the possibility to generate induced pluripotent stem cells (iPSCs) from any individual in a scalable manner, these studies can be extended to a disease- and patient-specific level. Autism spectrum disorder (ASD) is considered a neurodevelopmental disorder, with substantial evidence pointing to early alterations in neurogenesis and network formation as key pathogenic drivers. For that reason, ASD represents an ideal candidate for stem cell-based disease modeling. Here, we provide a concise review on recent advances in the field of human iPSC-based modeling of syndromic and non-syndromic forms of ASD, with a particular focus on studies addressing neuronal dysfunction and altered connectivity. We further discuss recent efforts to translate stem cell-based disease modeling to 3D via brain organoid and cell transplantation approaches, which enable the investigation of disease mechanisms in a tissue-like context. Finally, we describe advanced tools facilitating the assessment of altered neuronal function, comment on the relevance of iPSC-based models for the assessment of pharmaceutical therapies and outline potential future routes in stem cell-based ASD research.
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Affiliation(s)
- Arquimedes Cheffer
- Institute of Reconstructive Neurobiology, University of Bonn Medical Faculty & University Hospital Bonn, Venusberg-Campus 1, Building 76, 53127, Bonn, Germany
| | - Lea Jessica Flitsch
- Institute of Reconstructive Neurobiology, University of Bonn Medical Faculty & University Hospital Bonn, Venusberg-Campus 1, Building 76, 53127, Bonn, Germany
| | - Tamara Krutenko
- Institute of Reconstructive Neurobiology, University of Bonn Medical Faculty & University Hospital Bonn, Venusberg-Campus 1, Building 76, 53127, Bonn, Germany
| | - Pascal Röderer
- Life & Brain GmbH, Platform Cellomics, Venusberg-Campus 1, Building 76, 53127, Bonn, Germany
| | - Liubov Sokhranyaeva
- Institute of Experimental Epileptology and Cognition Research, University of Bonn Medical Faculty & University Hospital Bonn, Venusberg-Campus 1, Building 76, 53127, Bonn, Germany
| | - Vira Iefremova
- Institute of Reconstructive Neurobiology, University of Bonn Medical Faculty & University Hospital Bonn, Venusberg-Campus 1, Building 76, 53127, Bonn, Germany
| | - Mohamad Hajo
- Institute of Reconstructive Neurobiology, University of Bonn Medical Faculty & University Hospital Bonn, Venusberg-Campus 1, Building 76, 53127, Bonn, Germany
| | - Michael Peitz
- Institute of Reconstructive Neurobiology, University of Bonn Medical Faculty & University Hospital Bonn, Venusberg-Campus 1, Building 76, 53127, Bonn, Germany
- Life & Brain GmbH, Platform Cellomics, Venusberg-Campus 1, Building 76, 53127, Bonn, Germany
- Cell Programming Core Facility, University of Bonn Medical Faculty, Bonn, Germany
| | - Martin Karl Schwarz
- Life & Brain GmbH, Platform Cellomics, Venusberg-Campus 1, Building 76, 53127, Bonn, Germany
- Institute of Experimental Epileptology and Cognition Research, University of Bonn Medical Faculty & University Hospital Bonn, Venusberg-Campus 1, Building 76, 53127, Bonn, Germany
| | - Oliver Brüstle
- Institute of Reconstructive Neurobiology, University of Bonn Medical Faculty & University Hospital Bonn, Venusberg-Campus 1, Building 76, 53127, Bonn, Germany.
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Sultana R, Shrestha A, Lee CC, Ogundele OM. Disc1 Carrier Mice Exhibit Alterations in Neural pIGF-1Rβ and Related Kinase Expression. Front Cell Neurosci 2020; 14:94. [PMID: 32431597 PMCID: PMC7214624 DOI: 10.3389/fncel.2020.00094] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 03/30/2020] [Indexed: 12/20/2022] Open
Abstract
Mutation of the disc1 gene underlies a broad range of developmental neuropsychiatric defects, including schizophrenia, depression, and bipolar disorder. The pathophysiological phenotypes linked with disc1 mutation are due to the truncation of the DISC1 primary protein structure. This leads to a defective post-synaptic scaffolding and kinase—GSK3β and Erk1/2—signaling. As a result, synaptic function and maintenance are significantly impaired in the disc1 mutant brain. Among several other pathways, GSK3β and Erk1/2 are involved in insulin-like growth factor 1 receptor (IGF-1Rβ) kinase signaling. Although disc1 mutation alters these kinases, it is unclear if the mutation impacts IGF-1R expression and activity in the brain. Here, we demonstrate that the expression of active IGF-1Rβ (pIGF-1Rβ) is altered in the hippocampus and prefrontal cortex (PFC) of disc1 mutant mice and vary with the dose of the mutation (homozygous and heterozygous). The expression of pIGF-1Rβ decreased significantly in 129S (hom, disc1−/−) brains. In contrast, 129S:B6 (het, disc1+/−) brains were characterized by an increase in pIGF-1Rβ when compared with the C57BL/6 (disc1+/+) level. The decrease in pIGF-1Rβ level for the 129S brains was accompanied by the loss of Akt activity (S473 pAkt) and decreased Ser9 phosphorylation of GSK3β (increased basal GSK3β). Additionally, hippocampal and cortical pErk1/2 activity increased in the 129S hippocampus and cortex. Although 129S:B6 recorded alterations in pIGF-1Rβ-pAkt-GSK3β (like 129S), there was no observable change in pErk1/2 activity for the heterozygote (disc1+/−) mutant. In addition to GSK3β inhibition, we conclude that pIGF-1R, pAkt, and pErk1/2 are potential targets in disc1−/− mutant brain. On the other hand, pIGF-1R and pAkt can be further explored in disc1+/− brain.
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Affiliation(s)
- Razia Sultana
- Department of Comparative Biomedical Sciences, Louisiana State University School of Veterinary Medicine, Baton Rouge, LA, United States
| | - Amita Shrestha
- Department of Comparative Biomedical Sciences, Louisiana State University School of Veterinary Medicine, Baton Rouge, LA, United States
| | - Charles C Lee
- Department of Comparative Biomedical Sciences, Louisiana State University School of Veterinary Medicine, Baton Rouge, LA, United States
| | - Olalekan M Ogundele
- Department of Comparative Biomedical Sciences, Louisiana State University School of Veterinary Medicine, Baton Rouge, LA, United States
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Disease-associated synaptic scaffold protein CNK2 modulates PSD size and influences localisation of the regulatory kinase TNIK. Sci Rep 2020; 10:5709. [PMID: 32235845 PMCID: PMC7109135 DOI: 10.1038/s41598-020-62207-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 03/05/2020] [Indexed: 01/13/2023] Open
Abstract
Scaffold proteins are responsible for structural organisation within cells; they form complexes with other proteins to facilitate signalling pathways and catalytic reactions. The scaffold protein connector enhancer of kinase suppressor of Ras 2 (CNK2) is predominantly expressed in neural tissues and was recently implicated in X-linked intellectual disability (ID). We have investigated the role of CNK2 in neurons in order to contribute to our understanding of how CNK2 alterations might cause developmental defects, and we have elucidated a functional role for CNK2 in the molecular processes that govern morphology of the postsynaptic density (PSD). We have also identified novel CNK2 interaction partners and explored their functional interdependency with CNK2. We focussed on the novel interaction partner TRAF2- and NCK-interacting kinase TNIK, which is also associated with ID. Both CNK2 and TNIK are expressed in neuronal dendrites and concentrated in dendritic spines, and staining with synaptic markers indicates a clear postsynaptic localisation. Importantly, our data highlight that CNK2 plays a role in directing TNIK subcellular localisation, and in neurons, CNK2 participates in ensuring that this multifunctional kinase is present in the correct place at desirable levels. In summary, our data indicate that CNK2 expression is critical for modulating PSD morphology; moreover, our study highlights that CNK2 functions as a scaffold with the potential to direct the localisation of regulatory proteins within the cell. Importantly, we describe a novel link between CNK2 and the regulatory kinase TNIK, and provide evidence supporting the idea that alterations in CNK2 localisation and expression have the potential to influence the behaviour of TNIK and other important regulatory molecules in neurons.
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Delevich K, Jaaro-Peled H, Penzo M, Sawa A, Li B. Parvalbumin Interneuron Dysfunction in a Thalamo-Prefrontal Cortical Circuit in Disc1 Locus Impairment Mice. eNeuro 2020; 7:ENEURO.0496-19.2020. [PMID: 32029441 PMCID: PMC7054897 DOI: 10.1523/eneuro.0496-19.2020] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/22/2020] [Accepted: 01/27/2020] [Indexed: 01/22/2023] Open
Abstract
Altered cortical excitation-inhibition (E-I) balance resulting from abnormal parvalbumin interneuron (PV IN) function is a proposed pathophysiological mechanism of schizophrenia and other major psychiatric disorders. Preclinical studies have indicated that disrupted-in-schizophrenia-1 (Disc1) is a useful molecular lead to address the biology of prefrontal cortex (PFC)-dependent cognition and PV IN function. To date, PFC inhibitory circuit function has not been investigated in depth in Disc1 locus impairment (LI) mouse models. Therefore, we used a Disc1 LI mouse model to investigate E-I balance in medial PFC (mPFC) circuits. We found that inhibition onto layer 2/3 excitatory pyramidal neurons in the mPFC was significantly reduced in Disc1 LI mice. This reduced inhibition was accompanied by decreased GABA release from local PV, but not somatostatin (SOM) INs, and by impaired feedforward inhibition (FFI) in the mediodorsal thalamus (MD) to mPFC circuit. Our mechanistic findings of abnormal PV IN function in a Disc1 LI model provide insight into biology that may be relevant to neuropsychiatric disorders including schizophrenia.
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Affiliation(s)
- Kristen Delevich
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
- Watson School of Biological Sciences, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Hanna Jaaro-Peled
- Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21287
| | - Mario Penzo
- National Institute of Mental Health, Bethesda, MD 20892
| | - Akira Sawa
- Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21287
| | - Bo Li
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
- Watson School of Biological Sciences, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
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Robison A, Thakkar K, Diwadkar VA. Cognition and Reward Circuits in Schizophrenia: Synergistic, Not Separate. Biol Psychiatry 2020; 87:204-214. [PMID: 31733788 PMCID: PMC6946864 DOI: 10.1016/j.biopsych.2019.09.021] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 09/05/2019] [Accepted: 09/17/2019] [Indexed: 01/29/2023]
Abstract
Schizophrenia has been studied from the perspective of cognitive or reward-related impairments, yet it cannot be wholly related to one or the other process and their corresponding neural circuits. We posit a comprehensive circuit-based model proposing that dysfunctional interactions between the brain's cognitive and reward circuits underlie schizophrenia. The model is underpinned by how the relationship between glutamatergic and dopaminergic dysfunction in schizophrenia drives interactions between cognition and reward circuits. We argue that this interaction is synergistic: that is, deficits of cognition and reward processing interact, and this interaction is a core feature of schizophrenia. In adopting this position, we undertake a focused review of animal physiology and human clinical data, and in proposing this synergistic model, we highlight dopaminergic afferents from the ventral tegmental area to nucleus accumbens (mesolimbic circuit) and frontal cortex (mesocortical circuit). We then expand on the role of glutamatergic inputs to these dopamine circuits and dopaminergic modulation of critical excitatory pathways with attention given to the role of glutamatergic hippocampal outputs onto nucleus accumbens. Finally, we present evidence for how in schizophrenia, dysfunction in the mesolimbic and mesocortical circuits and their corresponding glutamatergic inputs gives rise to clinical and cognitive phenotypes and is associated with positive and negative symptom dimensions. The synthesis attempted here provides an impetus for a conceptual shift that links cognitive and motivational aspects of schizophrenia and that can lead to treatment approaches that seek to harmonize network interactions between the brain's cognition and reward circuits with ameliorative effects in each behavioral domain.
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Affiliation(s)
| | - Katharine Thakkar
- Dept. of Psychology, Michigan State University,Division of Psychiatry and Behavioral Medicine, Michigan State University
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Multiple rare inherited variants in a four generation schizophrenia family offer leads for complex mode of disease inheritance. Schizophr Res 2020; 216:288-294. [PMID: 31813803 PMCID: PMC8958857 DOI: 10.1016/j.schres.2019.11.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 11/23/2019] [Accepted: 11/24/2019] [Indexed: 02/01/2023]
Abstract
Schizophrenia is a clinically and genetically heterogeneous neuropsychiatric disorder, with a polygenic basis but identification of the specific determinants is a continuing challenge. In this study, we analyzed a multigenerational family, with all healthy individuals in the first two generations, and four progeny affected with schizophrenia in the subsequent two generations, using whole exome sequencing. We identified five rare protein sequence altering heterozygous variants, in five different genes namely SMARCA5, PDE1B, TNIK, SMARCA2 and FLRT shared among all affected members and predicted to be damaging. Variants in SMARCA5 and PDE1B were inherited from the unaffected father whereas variants in TNIK, SMARCA2 and FLRT1 were inherited from the unaffected mother in all the three affected individuals in the third generation; and notably all these five variants were transmitted by an affected mother to her affected son. Microsatellite based analysis lent a modest linkage support (LOD score of 1.2; θ=0.0 at each variant). Of note, analysis of exome data of an ancestry matched unrelated schizophrenia cohort (n = 350), revealed a total of 16 rare variants (MAF < 0.01) in these five genes. Interestingly, these five genes involved in neurodevelopmental and/or neurotransmitter signaling processes are implicated in the etiology of schizophrenia previously. This study provides good evidence for a likely cumulative contribution of multiple rare variants from disease relevant genes with a threshold effect in disease development and seems to explain the unusual disease transmission pattern generally witnessed in such conditions, but warrants extensive replication efforts in families with similar complex disease inheritance profiles.
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Erli F, Palmos AB, Raval P, Mukherjee J, Sellers KJ, Gatford NJF, Moss SJ, Brandon NJ, Penzes P, Srivastava DP. Estradiol reverses excitatory synapse loss in a cellular model of neuropsychiatric disorders. Transl Psychiatry 2020; 10:16. [PMID: 32066698 PMCID: PMC7026123 DOI: 10.1038/s41398-020-0682-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 11/26/2019] [Accepted: 11/28/2019] [Indexed: 12/25/2022] Open
Abstract
Loss of glutamatergic synapses is thought to be a key cellular pathology associated with neuropsychiatric disorders including schizophrenia (SCZ) and major depressive disorder (MDD). Genetic and cellular studies of SCZ and MDD using in vivo and in vitro systems have supported a key role for dysfunction of excitatory synapses in the pathophysiology of these disorders. Recent clinical studies have demonstrated that the estrogen, 17β-estradiol can ameliorate many of the symptoms experienced by patients. Yet, to date, our understanding of how 17β-estradiol exerted these beneficial effects is limited. In this study, we have tested the hypothesis that 17β-estradiol can restore dendritic spine number in a cellular model that recapitulates the loss of synapses associated with SCZ and MDD. Ectopic expression of wildtype, mutant or shRNA-mediated knockdown of Disrupted in Schizophrenia 1 (DISC1) reduced dendritic spine density in primary cortical neurons. Acute or chronic treatment with 17β-estradiol increased spine density to control levels in neurons with altered DISC1 levels. In addition, 17β-estradiol reduced the extent to which ectopic wildtype and mutant DISC1 aggregated. Furthermore, 17β-estradiol also caused the enrichment of synaptic proteins at synapses and increased the number of dendritic spines containing PSD-95 or that overlapped with the pre-synaptic marker bassoon. Taken together, our data indicates that estrogens can restore lost excitatory synapses caused by altered DISC1 expression, potentially through the trafficking of DISC1 and its interacting partners. These data highlight the possibility that estrogens exert their beneficial effects in SCZ and MDD in part by modulating dendritic spine number.
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Affiliation(s)
- Filippo Erli
- grid.13097.3c0000 0001 2322 6764Department of Basic and Clinical Neuroscience, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, SE5 9RT UK
| | - Alish B. Palmos
- grid.13097.3c0000 0001 2322 6764Department of Basic and Clinical Neuroscience, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, SE5 9RT UK
| | - Pooja Raval
- grid.13097.3c0000 0001 2322 6764Department of Basic and Clinical Neuroscience, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, SE5 9RT UK
| | - Jayanta Mukherjee
- grid.429997.80000 0004 1936 7531AstraZeneca Tufts Laboratory for Basic and Translational Neuroscience, Tufts University, Boston, MA UK
| | - Katherine J. Sellers
- grid.13097.3c0000 0001 2322 6764Department of Basic and Clinical Neuroscience, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, SE5 9RT UK
| | - Nicholas J. F. Gatford
- grid.13097.3c0000 0001 2322 6764Department of Basic and Clinical Neuroscience, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, SE5 9RT UK
| | - Stephen J. Moss
- grid.429997.80000 0004 1936 7531AstraZeneca Tufts Laboratory for Basic and Translational Neuroscience, Tufts University, Boston, MA UK
| | - Nicholas J. Brandon
- grid.429997.80000 0004 1936 7531AstraZeneca Tufts Laboratory for Basic and Translational Neuroscience, Tufts University, Boston, MA UK ,grid.417815.e0000 0004 5929 4381Neuroscience, IMED Biotech Unit, AstraZeneca, Boston, MA UK
| | - Peter Penzes
- grid.16753.360000 0001 2299 3507Department of Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL USA ,grid.16753.360000 0001 2299 3507Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL USA ,grid.16753.360000 0001 2299 3507Centre for Autism and Neurodevelopment, Northwestern University, Chicago, IL USA
| | - Deepak P. Srivastava
- grid.13097.3c0000 0001 2322 6764Department of Basic and Clinical Neuroscience, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, SE5 9RT UK ,grid.16753.360000 0001 2299 3507Department of Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL USA ,grid.13097.3c0000 0001 2322 6764MRC Centre for Neurodevelopmental Disorders, King’s College London, London, SE1 1UL UK
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Kang E, Song J, Lin Y, Park J, Lee JH, Hussani Q, Gu Y, Ge S, Li W, Hsu KS, Berninger B, Christian KM, Song H, Ming GL. Interplay between a Mental Disorder Risk Gene and Developmental Polarity Switch of GABA Action Leads to Excitation-Inhibition Imbalance. Cell Rep 2019; 28:1419-1428.e3. [PMID: 31390557 PMCID: PMC6690484 DOI: 10.1016/j.celrep.2019.07.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 05/29/2019] [Accepted: 07/10/2019] [Indexed: 12/17/2022] Open
Abstract
Excitation-inhibition (E-I) imbalance is considered a hallmark of various neurodevelopmental disorders, including schizophrenia and autism. How genetic risk factors disrupt coordinated glutamatergic and GABAergic synapse formation to cause an E-I imbalance is not well understood. Here, we show that knockdown of Disrupted-in-schizophrenia 1 (DISC1), a risk gene for major mental disorders, leads to E-I imbalance in mature dentate granule neurons. We found that excessive GABAergic inputs from parvalbumin-, but not somatostatin-, expressing interneurons enhance the formation of both glutamatergic and GABAergic synapses in immature mutant neurons. Following the switch in GABAergic signaling polarity from depolarizing to hyperpolarizing during neuronal maturation, heightened inhibition from excessive parvalbumin+ GABAergic inputs causes loss of excitatory glutamatergic synapses in mature mutant neurons, resulting in an E-I imbalance. Our findings provide insights into the developmental role of depolarizing GABA in establishing E-I balance and how it can be influenced by genetic risk factors for mental disorders.
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Affiliation(s)
- Eunchai Kang
- Department of Neuroscience and Mahoney Institute for Neurosciences, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Juan Song
- Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Pharmacology, School of Medicine, University of North Carolina, Chapel Hill, NC 27599, USA; Neuroscience Center, School of Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Yuting Lin
- Department of Pharmacology, College of Medicine, National Cheng Kung University, No. 1, University Road, Tainan City 701, Taiwan
| | - Jaesuk Park
- Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Jennifer H Lee
- Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Qassim Hussani
- Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Yan Gu
- Department of Neurobiology and Behavior, State University of New York at Stony Brook, Stony Brook, NY 11794, USA
| | - Shaoyu Ge
- Department of Neurobiology and Behavior, State University of New York at Stony Brook, Stony Brook, NY 11794, USA
| | - Weidong Li
- Bio-X Institute, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Shanghai Jiao Tong University, Shanghai, China
| | - Kuei-Sen Hsu
- Department of Pharmacology, College of Medicine, National Cheng Kung University, No. 1, University Road, Tainan City 701, Taiwan
| | - Benedikt Berninger
- Center for Developmental Neurobiology, King's College London, London SE1UL, UK
| | - Kimberly M Christian
- Department of Neuroscience and Mahoney Institute for Neurosciences, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Hongjun Song
- Department of Neuroscience and Mahoney Institute for Neurosciences, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Institute for Regenerative Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; The Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Guo-Li Ming
- Department of Neuroscience and Mahoney Institute for Neurosciences, Perelman School for Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Institute for Regenerative Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
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28
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Gumina V, Colombrita C, Fallini C, Bossolasco P, Maraschi AM, Landers JE, Silani V, Ratti A. TDP-43 and NOVA-1 RNA-binding proteins as competitive splicing regulators of the schizophrenia-associated TNIK gene. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2019; 1862:194413. [PMID: 31382054 DOI: 10.1016/j.bbagrm.2019.194413] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 07/31/2019] [Accepted: 07/31/2019] [Indexed: 01/09/2023]
Abstract
The RNA-binding protein TDP-43, associated to amyotrophic lateral sclerosis and frontotemporal dementia, regulates the alternative splicing of several genes, including the skipping of TNIK exon 15. TNIK, a genetic risk factor for schizophrenia and causative for intellectual disability, encodes for a Ser/Thr kinase regulating negatively F-actin dynamics. Here we show that in the human adult nervous system TNIK exon 15 is mostly included compared to the other tissues and that, during neuronal differentiation of human induced pluripotent stem cells and of human neuroblastoma cells, TNIK exon 15 inclusion increases independently of TDP-43 protein content. By studying the possible molecular interplay of TDP-43 with brain-specific splicing factors, we found that the neuronal NOVA-1 protein competitively inhibits both TDP-43 and hnRNPA2/B1 skipping activity on TNIK by means of a RNA-dependent interaction and that this competitive mechanism is common to other TDP-43 RNA targets. We also show that the TNIK protein isoforms including/excluding exon 15 differently regulate cell spreading in non-neuronal cells and neuritogenesis in primary cortical neurons. Our data suggest a complex regulation between the ubiquitous TDP-43 and the neuron-specific NOVA-1 splicing factors in the brain that may help better understand the pathobiology of both neurodegenerative diseases and schizophrenia.
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Affiliation(s)
- Valentina Gumina
- Istituto Auxologico Italiano, IRCCS, Department of Neurology-Stroke Unit and Laboratory of Neuroscience, Via Zucchi 18, 20095, Cusano Milanino, Milan, Italy; Department of Pathophysiology and Transplantation, "Dino Ferrari" Center, Università degli Studi di Milano, Via F. Sforza 35, 20122 Milan, Italy
| | - Claudia Colombrita
- Istituto Auxologico Italiano, IRCCS, Department of Neurology-Stroke Unit and Laboratory of Neuroscience, Via Zucchi 18, 20095, Cusano Milanino, Milan, Italy
| | - Claudia Fallini
- Department of Neurology, University of Massachusetts Medical School, 368 Plantation Street, ASC 6-1053, Worcester, MA 01605, USA.
| | - Patrizia Bossolasco
- Istituto Auxologico Italiano, IRCCS, Department of Neurology-Stroke Unit and Laboratory of Neuroscience, Via Zucchi 18, 20095, Cusano Milanino, Milan, Italy
| | - Anna Maria Maraschi
- Istituto Auxologico Italiano, IRCCS, Department of Neurology-Stroke Unit and Laboratory of Neuroscience, Via Zucchi 18, 20095, Cusano Milanino, Milan, Italy.
| | - John E Landers
- Department of Neurology, University of Massachusetts Medical School, 368 Plantation Street, ASC 6-1053, Worcester, MA 01605, USA.
| | - Vincenzo Silani
- Istituto Auxologico Italiano, IRCCS, Department of Neurology-Stroke Unit and Laboratory of Neuroscience, Via Zucchi 18, 20095, Cusano Milanino, Milan, Italy; Department of Pathophysiology and Transplantation, "Dino Ferrari" Center, Università degli Studi di Milano, Via F. Sforza 35, 20122 Milan, Italy; "Aldo Ravelli" Center for Neurotechnology and Experimental Brain Therapeutics, Università degli Studi di Milano, Via A. di Rudinì 8, 20142 Milan, Italy.
| | - Antonia Ratti
- Istituto Auxologico Italiano, IRCCS, Department of Neurology-Stroke Unit and Laboratory of Neuroscience, Via Zucchi 18, 20095, Cusano Milanino, Milan, Italy; Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano, Via Fratelli Cervi 93, 20090, Segrate, Milan, Italy.
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Read J, Collie IT, Nguyen-McCarty M, Lucaj C, Robinson J, Conway L, Mukherjee J, McCall E, Donohoe G, Flavell E, Peciak K, Warwicker J, Dix C, Van den Hoven BG, Madin A, Brown DG, Moss S, Haggarty SJ, Brandon NJ, Bürli RW. Tool inhibitors and assays to interrogate the biology of the TRAF2 and NCK interacting kinase. Bioorg Med Chem Lett 2019; 29:1962-1967. [PMID: 31153805 DOI: 10.1016/j.bmcl.2019.05.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 05/16/2019] [Accepted: 05/17/2019] [Indexed: 01/21/2023]
Abstract
The TRAF2 and NCK interacting kinase (TNIK) has been proposed to play a role in cytoskeletal organization and synaptic plasticity and has been linked, among others, to neurological disorders. However, target validation efforts for TNIK have been hampered by the limited kinase selectivity of small molecule probes and possible functional compensation in mouse models. Both issues are at least in part due to its close homology to the kinases MINK1 (or MAP4K6) and MAP4K4 (or HGK). As part of our interest in validating TNIK as a therapeutic target for neurological diseases, we set up a panel of biochemical and cellular assays, which are described herein. We then examined the activity of known amino-pyridine-based TNIK inhibitors (1, 3) and prepared structurally very close analogs that lack the ability to inhibit the target. We also developed a structurally orthogonal, naphthyridine-based TNIK inhibitor (9) and an inactive control molecule of the same chemical series. These validated small-molecule probes will enable dissection of the function of TNIK family in the context of human disease biology.
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Affiliation(s)
- Jon Read
- Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge CB4 0WG, UK
| | - Iain T Collie
- Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge CB4 0WG, UK
| | - Michelle Nguyen-McCarty
- Departments of Neurology and Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Christopher Lucaj
- AstraZeneca Tufts Laboratory for Basic and Translational Neuroscience, Boston, MA 02111, USA
| | - James Robinson
- Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge CB4 0WG, UK
| | - Leslie Conway
- AstraZeneca Tufts Laboratory for Basic and Translational Neuroscience, Boston, MA 02111, USA
| | - Jayanta Mukherjee
- AstraZeneca Tufts Laboratory for Basic and Translational Neuroscience, Boston, MA 02111, USA
| | - Eileen McCall
- Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge CB4 0WG, UK
| | - Gerard Donohoe
- Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge CB4 0WG, UK
| | - Elizabeth Flavell
- Discovery Sciences, IMED Biotech Unit, AstraZeneca, Alderley Park, SK10 4TG, UK
| | - Karolina Peciak
- Discovery Sciences, IMED Biotech Unit, AstraZeneca, Alderley Park, SK10 4TG, UK
| | - Juli Warwicker
- Discovery Sciences, IMED Biotech Unit, AstraZeneca, Alderley Park, SK10 4TG, UK
| | - Carly Dix
- Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge CB4 0WG, UK
| | | | - Andrew Madin
- Discovery Sciences, IMED Biotech Unit, AstraZeneca, Cambridge CB4 0WG, UK
| | - Dean G Brown
- Discovery Sciences, IMED Biotech Unit, AstraZeneca Boston, Waltham, MA 02451, USA
| | - Stephen Moss
- AstraZeneca Tufts Laboratory for Basic and Translational Neuroscience, Boston, MA 02111, USA
| | - Stephen J Haggarty
- Departments of Neurology and Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Nicholas J Brandon
- Neuroscience, IMED Biotech Unit, AstraZeneca Boston, Waltham, MA 02451, USA.
| | - Roland W Bürli
- Neuroscience, IMED Biotech Unit, AstraZeneca, Cambridge CB21 6GH, UK.
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30
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Allen JD, Bishop JR. A systematic review of genome-wide association studies of antipsychotic response. Pharmacogenomics 2019; 20:291-306. [PMID: 30883267 PMCID: PMC6563266 DOI: 10.2217/pgs-2018-0163] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 01/07/2019] [Indexed: 12/18/2022] Open
Abstract
Clinical symptom response to antipsychotic medications is highly variable. Genome-wide association studies (GWAS) provide a 'hypothesis-free' method of interrogating the genome for biomarkers of antipsychotic response. We performed a systematic review of GWAS findings for antipsychotic efficacy or effectiveness. 14 studies met our inclusion criteria, ten of which examined antipsychotic response using quantitative rating scales to measure symptom improvement. 15 genome-wide significant loci were identified, seven of which were replicated in other antipsychotic GWAS publications: CNTNAP5, GRID2, GRM7, 8q24 (KCNK9), PCDH7, SLC1A1 and TNIK. Notably, four replicated loci are involved in glutamatergic pathways. Additional validation and evaluation of the biological significance of these markers is warranted. These markers should also be evaluated for clinical utility, especially in the context of other validated pharmacogenomic variants (e.g., CYP450 genes). These findings may generate new avenues for development of novel antipsychotic treatments.
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Affiliation(s)
- Josiah D Allen
- Department of Experimental & Clinical Pharmacology, University of Minnesota College of Pharmacy, Minneapolis, MN 55455, USA
- Medigenics Consulting LLC, Minneapolis, MN 55407, USA
| | - Jeffrey R Bishop
- Department of Experimental & Clinical Pharmacology, University of Minnesota College of Pharmacy, Minneapolis, MN 55455, USA
- Department of Psychiatry, University of Minnesota Medical School, Minneapolis, MN 55455, USA
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31
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Wilkinson B, Evgrafov O, Zheng D, Hartel N, Knowles JA, Graham NA, Ichida J, Coba MP. Endogenous Cell Type-Specific Disrupted in Schizophrenia 1 Interactomes Reveal Protein Networks Associated With Neurodevelopmental Disorders. Biol Psychiatry 2019; 85:305-316. [PMID: 29961565 PMCID: PMC6251761 DOI: 10.1016/j.biopsych.2018.05.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 04/03/2018] [Accepted: 05/03/2018] [Indexed: 11/17/2022]
Abstract
BACKGROUND Disrupted in schizophrenia 1 (DISC1) has been implicated in a number of psychiatric diseases along with neurodevelopmental phenotypes such as the proliferation and differentiation of neural progenitor cells. While there has been significant effort directed toward understanding the function of DISC1 through the determination of its protein-protein interactions within an in vitro setting, endogenous interactions involving DISC1 within a cell type-specific setting relevant to neural development remain unclear. METHODS Using CRISPR/Cas9 (clustered regularly interspaced short palindromic repeats/CRISPR-associated protein 9) genome engineering technology, we inserted an endogenous 3X-FLAG tag at the C-terminus of the canonical DISC1 gene in human induced pluripotent stem cells (iPSCs). We further differentiated these cells and used affinity purification to determine protein-protein interactions involving DISC1 in iPSC-derived neural progenitor cells and astrocytes. RESULTS We were able to determine 151 novel cell type-specific proteins present in DISC1 endogenous interactomes. The DISC1 interactomes can be clustered into several subcomplexes that suggest novel DISC1 cell-specific functions. In addition, the DISC1 interactome in iPSC-derived neural progenitor cells associates in a connected network containing proteins found to harbor de novo mutations in patients affected by schizophrenia and contains a subset of novel interactions that are known to harbor syndromic mutations in neurodevelopmental disorders. CONCLUSIONS Endogenous DISC1 interactomes within iPSC-derived human neural progenitor cells and astrocytes are able to provide context to DISC1 function in a cell type-specific setting relevant to neural development and enables the integration of psychiatric disease risk factors within a set of defined molecular functions.
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Affiliation(s)
- Brent Wilkinson
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Oleg Evgrafov
- Department of Cell Biology, SUNY Downstate Medical Center, Brooklyn, NY 11203, USA
| | - DongQing Zheng
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90033, USA
| | - Nicolas Hartel
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90033, USA
| | - James A. Knowles
- Department of Cell Biology, SUNY Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Nicholas A. Graham
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90033, USA
| | - Justin Ichida
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA,Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA,Eli and Edythe Broad CIRM Center for Regenerative Medicine and Stem Cell Research at USC
| | - Marcelo P. Coba
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA,Department of Psychiatry and Behavioral Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA,Corresponding Author: Marcelo P. Coba, Keck School of Medicine, University of Southern California, Zilkha Neurogenetic Institute, 1501 San Pablo St, Los Angeles, CA 90033, USA. Phone: 323-442-4345.
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32
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Barnett BR, Torres-Velázquez M, Yi SY, Rowley PA, Sawin EA, Rubinstein CD, Krentz K, Anderson JM, Bakshi VP, Yu JPJ. Sex-specific deficits in neurite density and white matter integrity are associated with targeted disruption of exon 2 of the Disc1 gene in the rat. Transl Psychiatry 2019; 9:82. [PMID: 30745562 PMCID: PMC6370885 DOI: 10.1038/s41398-019-0429-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 01/24/2019] [Accepted: 01/26/2019] [Indexed: 02/06/2023] Open
Abstract
Diffusion tensor imaging (DTI) has provided remarkable insight into our understanding of white matter microstructure and brain connectivity across a broad spectrum of psychiatric disease. While DTI and other diffusion weighted magnetic resonance imaging (MRI) methods have clarified the axonal contribution to the disconnectivity seen in numerous psychiatric diseases, absent from these studies are quantitative indices of neurite density and orientation that are especially important features in regions of high synaptic density that would capture the synaptic contribution to the psychiatric disease state. Here we report the application of neurite orientation dispersion and density imaging (NODDI), an emerging microstructure imaging technique, to a novel Disc1 svΔ2 rat model of psychiatric illness and demonstrate the complementary and more specific indices of tissue microstructure found in NODDI than those reported by DTI. Our results demonstrate global and sex-specific changes in white matter microstructural integrity and deficits in neurite density as a consequence of the Disc1 svΔ2 genetic variation and highlight the application of NODDI and quantitative measures of neurite density and neurite dispersion in psychiatric disease.
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Affiliation(s)
- Brian R Barnett
- Neuroscience Training Program, Wisconsin Institutes for Medical Research, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Maribel Torres-Velázquez
- Department of Biomedical Engineering, College of Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Sue Y Yi
- Neuroscience Training Program, Wisconsin Institutes for Medical Research, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Paul A Rowley
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53705, USA
| | - Emily A Sawin
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53705, USA
| | - C Dustin Rubinstein
- Biotechnology Center, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Kathleen Krentz
- Biotechnology Center, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Jacqueline M Anderson
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53705, USA
| | - Vaishali P Bakshi
- Department of Psychiatry, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53705, USA
| | - John-Paul J Yu
- Neuroscience Training Program, Wisconsin Institutes for Medical Research, University of Wisconsin-Madison, Madison, WI, 53705, USA.
- Department of Biomedical Engineering, College of Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA.
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53705, USA.
- Department of Psychiatry, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53705, USA.
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OBI-NAGATA K, TEMMA Y, HAYASHI-TAKAGI A. Synaptic functions and their disruption in schizophrenia: From clinical evidence to synaptic optogenetics in an animal model. PROCEEDINGS OF THE JAPAN ACADEMY. SERIES B, PHYSICAL AND BIOLOGICAL SCIENCES 2019; 95:179-197. [PMID: 31080187 PMCID: PMC6742729 DOI: 10.2183/pjab.95.014] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The adult human brain consists of approximately a hundred billion neurons, which are connected via synapses. The pattern and strength of the synaptic connections are constantly changing (synaptic plasticity), and these changes are considered to underlie learning, memory, and personality. Many psychiatric disorders have been related to disturbances in synaptogenesis and subsequent plasticity. In this review, we summarize findings of synaptic disturbance and its involvement in the pathogenesis and/or pathophysiology of psychiatric disorders. We will focus on schizophrenia, because this condition has a high proven heritability, which offers more unambiguous insights into the biological origins of not only schizophrenia but also related psychiatric disorders. To demonstrate the involvement of synaptopathy in psychiatric disorders, we discuss what knowledge is missing at the circuits level, and what new technologies are needed to achieve a comprehensive understanding of synaptopathy in psychiatric disorders.
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Affiliation(s)
- Kisho OBI-NAGATA
- Laboratory of Medical Neuroscience, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan
| | - Yusuke TEMMA
- Laboratory of Medical Neuroscience, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan
| | - Akiko HAYASHI-TAKAGI
- Laboratory of Medical Neuroscience, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan
- PRESTO, Japan Science and Technology Agency, Kawaguchi, Japan
- Correspondence should be addressed: A. Hayashi-Takagi, Laboratory of Medical Neuroscience, Institute for Molecular and Cellular Regulation, Gunma University, 3-39-15 Showa-machi, Maebashi, Gunma 371-8512, Japan (e-mail: )
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34
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Proteomic Studies Reveal Disrupted in Schizophrenia 1 as a Player in Both Neurodevelopment and Synaptic Function. Int J Mol Sci 2018; 20:ijms20010119. [PMID: 30597994 PMCID: PMC6337115 DOI: 10.3390/ijms20010119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 12/21/2018] [Accepted: 12/24/2018] [Indexed: 02/03/2023] Open
Abstract
A balanced chromosomal translocation disrupting DISC1 (Disrupted in Schizophrenia 1) gene has been linked to psychiatric diseases, such as major depression, bipolar disorder and schizophrenia. Since the discovery of this translocation, many studies have focused on understating the role of the truncated isoform of DISC1, hypothesizing that the gain of function of this protein could be behind the neurobiology of mental conditions, but not so many studies have focused in the mechanisms impaired due to its loss of function. For that reason, we performed an analysis on the cellular proteome of primary neurons in which DISC1 was knocked down with the goal of identifying relevant pathways directly affected by DISC1 loss of function. Using an unbiased proteomic approach, we found that the expression of 31 proteins related to neurodevelopment (e.g., CRMP-2, stathmin) and synaptic function (e.g., MUNC-18, NCS-1) is altered by DISC1 in primary mouse neurons. Hence, this study reinforces the idea that DISC1 is a unifying regulator of both neurodevelopment and synaptic function, thereby providing a link between these two key anatomical and cellular circuitries.
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35
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Weng YT, Chien T, Kuan II, Chern Y. The TRAX, DISC1, and GSK3 complex in mental disorders and therapeutic interventions. J Biomed Sci 2018; 25:71. [PMID: 30285728 PMCID: PMC6171312 DOI: 10.1186/s12929-018-0473-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 09/25/2018] [Indexed: 01/15/2023] Open
Abstract
Psychiatric disorders (such as bipolar disorder, depression, and schizophrenia) affect the lives of millions of individuals worldwide. Despite the tremendous efforts devoted to various types of psychiatric studies and rapidly accumulating genetic information, the molecular mechanisms underlying psychiatric disorder development remain elusive. Among the genes that have been implicated in schizophrenia and other mental disorders, disrupted in schizophrenia 1 (DISC1) and glycogen synthase kinase 3 (GSK3) have been intensively investigated. DISC1 binds directly to GSK3 and modulates many cellular functions by negatively inhibiting GSK3 activity. The human DISC1 gene is located on chromosome 1 and is highly associated with schizophrenia and other mental disorders. A recent study demonstrated that a neighboring gene of DISC1, translin-associated factor X (TRAX), binds to the DISC1/GSK3β complex and at least partly mediates the actions of the DISC1/GSK3β complex. Previous studies also demonstrate that TRAX and most of its interacting proteins that have been identified so far are risk genes and/or markers of mental disorders. In the present review, we will focus on the emerging roles of TRAX and its interacting proteins (including DISC1 and GSK3β) in psychiatric disorders and the potential implications for developing therapeutic interventions.
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Affiliation(s)
- Yu-Ting Weng
- Institute of Biomedical Sciences, Academia Sinica, 128 Sec. 2, Academia Rd. Nankang, Taipei, 115, Taiwan, Republic of China.,Program in Molecular Medicine, National Yang-Ming University and Academia Sinica, No.155, Sec.2, Linong Street, Taipei, 112, Taiwan, Republic of China
| | - Ting Chien
- Institute of Biomedical Sciences, Academia Sinica, 128 Sec. 2, Academia Rd. Nankang, Taipei, 115, Taiwan, Republic of China
| | - I-I Kuan
- Institute of Biomedical Sciences, Academia Sinica, 128 Sec. 2, Academia Rd. Nankang, Taipei, 115, Taiwan, Republic of China
| | - Yijuang Chern
- Institute of Biomedical Sciences, Academia Sinica, 128 Sec. 2, Academia Rd. Nankang, Taipei, 115, Taiwan, Republic of China. .,Program in Molecular Medicine, National Yang-Ming University and Academia Sinica, No.155, Sec.2, Linong Street, Taipei, 112, Taiwan, Republic of China.
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36
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Malavasi ELV, Economides KD, Grünewald E, Makedonopoulou P, Gautier P, Mackie S, Murphy LC, Murdoch H, Crummie D, Ogawa F, McCartney DL, O'Sullivan ST, Burr K, Torrance HS, Phillips J, Bonneau M, Anderson SM, Perry P, Pearson M, Constantinides C, Davidson-Smith H, Kabiri M, Duff B, Johnstone M, Polites HG, Lawrie SM, Blackwood DH, Semple CA, Evans KL, Didier M, Chandran S, McIntosh AM, Price DJ, Houslay MD, Porteous DJ, Millar JK. DISC1 regulates N-methyl-D-aspartate receptor dynamics: abnormalities induced by a Disc1 mutation modelling a translocation linked to major mental illness. Transl Psychiatry 2018; 8:184. [PMID: 30190480 PMCID: PMC6127284 DOI: 10.1038/s41398-018-0228-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 07/16/2018] [Indexed: 01/01/2023] Open
Abstract
The neuromodulatory gene DISC1 is disrupted by a t(1;11) translocation that is highly penetrant for schizophrenia and affective disorders, but how this translocation affects DISC1 function is incompletely understood. N-methyl-D-aspartate receptors (NMDAR) play a central role in synaptic plasticity and cognition, and are implicated in the pathophysiology of schizophrenia through genetic and functional studies. We show that the NMDAR subunit GluN2B complexes with DISC1-associated trafficking factor TRAK1, while DISC1 interacts with the GluN1 subunit and regulates dendritic NMDAR motility in cultured mouse neurons. Moreover, in the first mutant mouse that models DISC1 disruption by the translocation, the pool of NMDAR transport vesicles and surface/synaptic NMDAR expression are increased. Since NMDAR cell surface/synaptic expression is tightly regulated to ensure correct function, these changes in the mutant mouse are likely to affect NMDAR signalling and synaptic plasticity. Consistent with these observations, RNASeq analysis of the translocation carrier-derived human neurons indicates abnormalities of excitatory synapses and vesicle dynamics. RNASeq analysis of the human neurons also identifies many differentially expressed genes previously highlighted as putative schizophrenia and/or depression risk factors through large-scale genome-wide association and copy number variant studies, indicating that the translocation triggers common disease pathways that are shared with unrelated psychiatric patients. Altogether, our findings suggest that translocation-induced disease mechanisms are likely to be relevant to mental illness in general, and that such disease mechanisms include altered NMDAR dynamics and excitatory synapse function. This could contribute to the cognitive disorders displayed by translocation carriers.
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Affiliation(s)
- Elise L V Malavasi
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | | | - Ellen Grünewald
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Paraskevi Makedonopoulou
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Philippe Gautier
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Shaun Mackie
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Laura C Murphy
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Hannah Murdoch
- Molecular Pharmacology Group, Wolfson Building, Institute of Neuroscience and Psychology, The University of Glasgow, University Avenue, Glasgow, UK
| | - Darragh Crummie
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Fumiaki Ogawa
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Daniel L McCartney
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Shane T O'Sullivan
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Karen Burr
- Centre for Regenerative Medicine, The University of Edinburgh, Edinburgh, UK
| | - Helen S Torrance
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Jonathan Phillips
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Marion Bonneau
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Susan M Anderson
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Paul Perry
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Matthew Pearson
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Costas Constantinides
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Hazel Davidson-Smith
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Mostafa Kabiri
- Translational In Vivo Models at Sanofi, Frankfurt, Germany
| | - Barbara Duff
- Division of Psychiatry, The University of Edinburgh, Edinburgh, UK
| | - Mandy Johnstone
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
- Division of Psychiatry, The University of Edinburgh, Edinburgh, UK
| | | | - Stephen M Lawrie
- Division of Psychiatry, The University of Edinburgh, Edinburgh, UK
| | | | - Colin A Semple
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Kathryn L Evans
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - Michel Didier
- Translational Sciences at Sanofi, Chilly-Mazarin, France
| | | | | | - David J Price
- Centre for Integrative Physiology, The University of Edinburgh, Edinburgh, UK
| | - Miles D Houslay
- School of Cancer and Pharmaceutical Sciences, King's College London, London, UK
| | - David J Porteous
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK
| | - J Kirsty Millar
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine at the University of Edinburgh, Edinburgh, UK.
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37
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Chen X, Shibata AC, Hendi A, Kurashina M, Fortes E, Weilinger NL, MacVicar BA, Murakoshi H, Mizumoto K. Rap2 and TNIK control Plexin-dependent tiled synaptic innervation in C. elegans. eLife 2018; 7:38801. [PMID: 30063210 PMCID: PMC6067881 DOI: 10.7554/elife.38801] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 07/11/2018] [Indexed: 12/22/2022] Open
Abstract
During development, neurons form synapses with their fate-determined targets. While we begin to elucidate the mechanisms by which extracellular ligand-receptor interactions enhance synapse specificity by inhibiting synaptogenesis, our knowledge about their intracellular mechanisms remains limited. Here we show that Rap2 GTPase (rap-2) and its effector, TNIK (mig-15), act genetically downstream of Plexin (plx-1) to restrict presynaptic assembly and to form tiled synaptic innervation in C. elegans. Both constitutively GTP- and GDP-forms of rap-2 mutants exhibit synaptic tiling defects as plx-1 mutants, suggesting that cycling of the RAP-2 nucleotide state is critical for synapse inhibition. Consistently, PLX-1 suppresses local RAP-2 activity. Excessive ectopic synapse formation in mig-15 mutants causes a severe synaptic tiling defect. Conversely, overexpression of mig-15 strongly inhibited synapse formation, suggesting that mig-15 is a negative regulator of synapse formation. These results reveal that subcellular regulation of small GTPase activity by Plexin shapes proper synapse patterning in vivo. Genes do more than just direct the color of our hair or eyes. They produce proteins that are involved in almost every process in the body. In humans, the majority of active genes can be found in the brain, where they help it to develop and work properly – effectively controlling how we move and behave. The brain’s functional units, the nerve cells or neurons, communicate with each other by releasing messenger molecules in the gap between them, the synapse. These molecules are then picked up from specific receptor proteins of the receiving neuron. In the nervous system, neurons only form synapses with the cells they need to connect with, even though they are surrounded by many more cells. This implies that they use specific mechanisms to stop neurons from forming synapses with incorrect target cells. This is important, because if too many synapses were present or if synapses formed with incorrect target cells, it would compromise the information flow in the nervous system. This would ultimately lead to various neurological conditions, including Autism Spectrum Disorder. In 2013, researchers found that in the roundworm Caenorhabditis elegans, a receptor protein called Plexin, is located at the surface of the neurons and can inhibit the formation of nearby synapses. Now, Chen et al. – including one author involved in the previous research – wanted to find out what genes Plexin manipulates when it stops synapses from growing. Knowing what each of those genes does can help us understand how neurons can inhibit synapses. The results revealed that Plexin appears to regulate two genes, Rap2 and TNIK. Plexin reduced the activity of Rap2 in the neuron that released the messenger, which hindered the formation of synapses. The gene TNIK and its protein on the other hand, have the ability to modify other proteins and could so inhibit the growth of synapses. When TNIK was experimentally removed, the number of synapses increased, but when its activity was increased, the number of synapses was strongly reduced. These findings could help scientists understand how mutations in Rap2 or TNIK can lead to various neurological conditions. A next step will be to test if these genes also affect the formation of synapses in other species such as mice, which have a more complex nervous system that is structurally and functionally more similar to that of humans.
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Affiliation(s)
- Xi Chen
- Department of Zoology, The University of British Columbia, Vancouver, Canada
| | - Akihiro Ce Shibata
- Supportive Center for Brain Research, National Institute for Physiological Sciences, Okazaki, Japan
| | - Ardalan Hendi
- Department of Zoology, The University of British Columbia, Vancouver, Canada
| | - Mizuki Kurashina
- Department of Zoology, The University of British Columbia, Vancouver, Canada
| | - Ethan Fortes
- Department of Zoology, The University of British Columbia, Vancouver, Canada
| | | | - Brian A MacVicar
- Department of Psychiatry, The University of British Columbia, Vancouver, Canada
| | - Hideji Murakoshi
- Supportive Center for Brain Research, National Institute for Physiological Sciences, Okazaki, Japan
| | - Kota Mizumoto
- Department of Zoology, The University of British Columbia, Vancouver, Canada
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Tropea D, Hardingham N, Millar K, Fox K. Mechanisms underlying the role of DISC1 in synaptic plasticity. J Physiol 2018; 596:2747-2771. [PMID: 30008190 PMCID: PMC6046077 DOI: 10.1113/jp274330] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 02/02/2018] [Indexed: 12/11/2022] Open
Abstract
Disrupted in schizophrenia 1 (DISC1) is an important hub protein, forming multimeric complexes by self-association and interacting with a large number of synaptic and cytoskeletal molecules. The synaptic location of DISC1 in the adult brain suggests a role in synaptic plasticity, and indeed, a number of studies have discovered synaptic plasticity impairments in a variety of different DISC1 mutants. This review explores the possibility that DISC1 is an important molecule for organizing proteins involved in synaptic plasticity and examines why mutations in DISC1 impair plasticity. It concentrates on DISC1's role in interacting with synaptic proteins, controlling dendritic structure and cellular trafficking of mRNA, synaptic vesicles and mitochondria. N-terminal directed mutations appear to impair synaptic plasticity through interactions with phosphodiesterase 4B (PDE4B) and hence protein kinase A (PKA)/GluA1 and PKA/cAMP response element-binding protein (CREB) signalling pathways, and affect spine structure through interactions with kalirin 7 (Kal-7) and Rac1. C-terminal directed mutations also impair plasticity possibly through altered interactions with lissencephaly protein 1 (LIS1) and nuclear distribution protein nudE-like 1 (NDEL1), thereby affecting developmental processes such as dendritic structure and spine maturation. Many of the same molecules involved in DISC1's cytoskeletal interactions are also involved in intracellular trafficking, raising the possibility that impairments in intracellular trafficking affect cytoskeletal development and vice versa. While the multiplicity of DISC1 protein interactions makes it difficult to pinpoint a single causal signalling pathway, we suggest that the immediate-term effects of N-terminal influences on GluA1, Rac1 and CREB, coupled with the developmental effects of C-terminal influences on trafficking and the cytoskeleton make up the two main branches of DISC1's effect on synaptic plasticity and dendritic spine stability.
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Affiliation(s)
- Daniela Tropea
- Neurospychiatric GeneticsTrinity Center for Health Sciences and Trinity College Institute of Neuroscience (TCIN)Trinity College DublinDublinIreland
| | - Neil Hardingham
- School of BiosciencesMuseum AvenueCardiff UniversityCardiffUK
| | - Kirsty Millar
- Centre for Genomic & Experimental MedicineMRC Institute of Genetics & Molecular MedicineWestern General HospitalUniversity of EdinburghCrewe RoadEdinburghUK
| | - Kevin Fox
- School of BiosciencesMuseum AvenueCardiff UniversityCardiffUK
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Baltussen LL, Rosianu F, Ultanir SK. Kinases in synaptic development and neurological diseases. Prog Neuropsychopharmacol Biol Psychiatry 2018; 84:343-352. [PMID: 29241837 DOI: 10.1016/j.pnpbp.2017.12.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 12/08/2017] [Accepted: 12/09/2017] [Indexed: 10/18/2022]
Abstract
Neuronal morphogenesis and synapse development is essential for building a functioning nervous system, and defects in these processes are associated with neurological disorders. Our understanding of molecular components and signalling events that contribute to neuronal development and pathogenesis is limited. Genes associated with neurodevelopmental and neurodegenerative diseases provide entry points for elucidating molecular events that contribute to these conditions. Several protein kinases, enzymes that regulate protein function by phosphorylating their substrates, are genetically linked to neurological disorders. Identifying substrates of these kinases is key to discovering their function and providing insight for possible therapies. In this review, we describe how various methods for kinase-substrate identification helped elucidate kinase signalling pathways important for neuronal development and function. We describe recent advances on roles of kinases TAOK2, TNIK and CDKL5 in neuronal development and the converging pathways of LRRK2, PINK1 and GAK in Parkinson's Disease.
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Affiliation(s)
- Lucas L Baltussen
- Kinases and Brain Development Laboratory, The Francis Crick Institute, London NW1 1AT, United Kingdom
| | - Flavia Rosianu
- Kinases and Brain Development Laboratory, The Francis Crick Institute, London NW1 1AT, United Kingdom
| | - Sila K Ultanir
- Kinases and Brain Development Laboratory, The Francis Crick Institute, London NW1 1AT, United Kingdom.
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Yu H, Yan H, Wang L, Li J, Tan L, Deng W, Chen Q, Yang G, Zhang F, Lu T, Yang J, Li K, Lv L, Tan Q, Zhang H, Xiao X, Li M, Ma X, Yang F, Li L, Wang C, Li T, Zhang D, Yue W. Five novel loci associated with antipsychotic treatment response in patients with schizophrenia: a genome-wide association study. Lancet Psychiatry 2018; 5:327-338. [PMID: 29503163 DOI: 10.1016/s2215-0366(18)30049-x] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/12/2018] [Accepted: 01/15/2018] [Indexed: 02/01/2023]
Abstract
BACKGROUND Antipsychotic drugs improve schizophrenia symptoms and reduce the frequency of relapse, but treatment response is highly variable. Little is known about the genetic factors associated with treatment response. We did a genome-wide association study of antipsychotic treatment response in patients with schizophrenia. METHODS The discovery cohort comprised patients with schizophrenia from 32 psychiatric hospitals in China that are part of the Chinese Antipsychotics Pharmacogenomics Consortium. Patients who met inclusion criteria were randomly assigned (1:1:1:1:1:1) to six groups (olanzapine, risperidone, quetiapine, aripiprazole, ziprasidone, and haloperidol or perphenazine; those assigned to haloperidol or perphenazine were subsequently assigned [1:1] to one or the other) for 6 weeks. Antipsychotic response was quantified with percentage change on the Positive and Negative Syndrome Scale. Single-nucleotide polymorphisms (SNPs) were tested for their association with treatment response. Linkage-disequilibrium-independent SNPs that exhibited potential associations (ie, p<1 × 10-5) were tested in a validation cohort comprising patients from the Chinese Antipsychotics Pharmacogenetics Consortium from five collaborative hospitals, who were treated with olanzapine, risperidone, or aripiprazole for 8 weeks. FINDINGS The discovery cohort contained 2413 patients and the validation cohort 1379 patients. In the discovery cohort, we identified three novel SNPs (rs72790443 in MEGF10 [p=1·37 × 10-8], rs1471786 in SLC1A1 [p=1·77 × 10-8], and rs9291547 in PCDH7 [p=4·48 × 10-8]) that were associated with antipsychotic treatment response at a genome-wide significance level. These associations were confirmed in the validation cohort (p<0·05). In the combined sample of the discovery and validation cohorts, we identified five novel loci showing genome-wide significant associations with general antipsychotic treatment response (rs72790443 in MEGF10 [p=1·40 × 10-9], rs1471786 in SLC1A1 [p=2·33 × 10-9], rs9291547 in PCDH7 [p=3·24 × 10-9], rs12711680 in CNTNAP5 [p=2·12 × 10-8], and rs6444970 in TNIK [p=4·85 × 10-8]). In antipsychotic-specific groups, after the combination of results from both samples, the rs2239063 SNP in CACNA1C was associated with treatment response to olanzapine (p=1·10 × 10-8), rs16921385 in SLC1A1 was associated with treatment response to risperidone (p=4·40 × 10-8), and rs17022006 in CNTN4 was associated with treatment response to aripiprazole (p=2·58 × 10-8). INTERPRETATION We have identified genes related to synaptic function, neurotransmitter receptors, and schizophrenia risk that are associated with response to antipsychotics. These findings improve understanding of the mechanisms underlying treatment responses, and the identified biomarkers could eventually guide choice of antipsychotic in patients with schizophrenia. FUNDING National Key Technology R&D Program of China, National Natural Science Foundation of China.
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Affiliation(s)
- Hao Yu
- Institute of Mental Health, Peking University Sixth Hospital, Beijing, China; Department of Psychiatry, Jining Medical University, Jining, Shandong, China
| | - Hao Yan
- Institute of Mental Health, Peking University Sixth Hospital, Beijing, China; National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, China
| | - Lifang Wang
- Institute of Mental Health, Peking University Sixth Hospital, Beijing, China; National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, China
| | - Jun Li
- Institute of Mental Health, Peking University Sixth Hospital, Beijing, China; National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, China
| | - Liwen Tan
- Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wei Deng
- Mental Health Center and Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Qi Chen
- Beijing Anding Hospital, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China; Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Guigang Yang
- Center for Biological Psychiatry, Beijing HuiLongGuan Hospital, Beijing, China
| | - Fuquan Zhang
- Wuxi Mental Health Center, Nanjing Medical University, Wuxi, China
| | - Tianlan Lu
- Institute of Mental Health, Peking University Sixth Hospital, Beijing, China; National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, China
| | - Jianli Yang
- Institute of Mental Health, Tianjin Anding Hospital, Tianjin, China; Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
| | - Keqing Li
- Hebei Mental Health Center, Baoding, Hebei, China
| | - Luxian Lv
- Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China
| | - Qingrong Tan
- Department of Psychiatry, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Hongyan Zhang
- Institute of Mental Health, Peking University Sixth Hospital, Beijing, China; National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, China
| | - Xiao Xiao
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, China
| | - Ming Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan, China; Chinese Academy of Sciences Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
| | - Xin Ma
- Beijing Anding Hospital, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Fude Yang
- Center for Biological Psychiatry, Beijing HuiLongGuan Hospital, Beijing, China
| | - Lingjiang Li
- Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Chuanyue Wang
- Beijing Anding Hospital, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Tao Li
- Mental Health Center and Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Dai Zhang
- Institute of Mental Health, Peking University Sixth Hospital, Beijing, China; National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, China; Peking University-Tsinghua University Joint Center for Life Sciences/ PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, China
| | - Weihua Yue
- Institute of Mental Health, Peking University Sixth Hospital, Beijing, China; National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, China.
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Yerabham ASK, Müller-Schiffmann A, Ziehm T, Stadler A, Köber S, Indurkhya X, Marreiros R, Trossbach SV, Bradshaw NJ, Prikulis I, Willbold D, Weiergräber OH, Korth C. Biophysical insights from a single chain camelid antibody directed against the Disrupted-in-Schizophrenia 1 protein. PLoS One 2018; 13:e0191162. [PMID: 29324815 PMCID: PMC5764400 DOI: 10.1371/journal.pone.0191162] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 12/31/2017] [Indexed: 01/17/2023] Open
Abstract
Accumulating evidence suggests an important role for the Disrupted-in-Schizophrenia 1 (DISC1) protein in neurodevelopment and chronic mental illness. In particular, the C-terminal 300 amino acids of DISC1 have been found to mediate important protein-protein interactions and to harbor functionally important phosphorylation sites and disease-associated polymorphisms. However, long disordered regions and oligomer-forming subdomains have so far impeded structural analysis. VHH domains derived from camelid heavy chain only antibodies are minimal antigen binding modules with appreciable solubility and stability, which makes them well suited for the stabilizing proteins prior to structural investigation. Here, we report on the generation of a VHH domain derived from an immunized Lama glama, displaying high affinity for the human DISC1 C region (aa 691-836), and its characterization by surface plasmon resonance, size exclusion chromatography and immunological techniques. The VHH-DISC1 (C region) complex was also used for structural investigation by small angle X-ray scattering analysis. In combination with molecular modeling, these data support predictions regarding the three-dimensional fold of this DISC1 segment as well as its steric arrangement in complex with our VHH antibody.
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Affiliation(s)
- Antony S. K. Yerabham
- Department of Neuropathology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | | | - Tamar Ziehm
- Institute of Complex Systems (ICS-6: Structural Biochemistry), Forschungszentrum Jülich, Jülich, Germany
| | - Andreas Stadler
- Jülich Centre for Neutron Science JCNS and Institute for Complex Systems ICS, Forschungszentrum Jülich, Jülich, Germany
| | - Sabrina Köber
- Department of Neuropathology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Xela Indurkhya
- Department of Neuropathology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Rita Marreiros
- Department of Neuropathology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Svenja V. Trossbach
- Department of Neuropathology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Nicholas J. Bradshaw
- Department of Neuropathology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Ingrid Prikulis
- Department of Neuropathology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Dieter Willbold
- Institute of Complex Systems (ICS-6: Structural Biochemistry), Forschungszentrum Jülich, Jülich, Germany
- Institute for Physical Biology and BMFZ, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Oliver H. Weiergräber
- Institute of Complex Systems (ICS-6: Structural Biochemistry), Forschungszentrum Jülich, Jülich, Germany
| | - Carsten Korth
- Department of Neuropathology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
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Sultana R, Ghandi T, M. Davila A, Lee CC, Ogundele OM. Upregulated SK2 Expression and Impaired CaMKII Phosphorylation Are Shared Synaptic Defects Between 16p11.2del and 129S: Δdisc1 Mutant Mice. ASN Neuro 2018; 10:1759091418817641. [PMID: 33592687 PMCID: PMC6295693 DOI: 10.1177/1759091418817641] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 11/07/2018] [Accepted: 11/09/2018] [Indexed: 12/29/2022] Open
Abstract
Ion channel gating and kinase regulation of N-methyl-D-aspartate receptor 1 activity are fundamental mechanisms that govern synaptic plasticity. In this study, we showed that two mutant models (16p11.2del and Δdisc1 ) that recapitulate aspects of human cognitive disorders shared a similar defect in N-methyl-D-aspartate receptor 1-dependent synaptic function. Our results demonstrate that the expression of small-conductance potassium channels (SK2 or KCa2.2) was significantly upregulated in the hippocampus and prefrontal cortex of 16p11.2del and 129S:Δdisc1 mutant mice. Likewise, both mutant strains exhibited an impairment of T286 phosphorylation of calcium-calmodulin-dependent kinase II (CaMKII) in the hippocampus and prefrontal cortex. In vivo neural recordings revealed that increased SK2 expression and impaired T286 phosphorylation of CaMKII coincide with a prolonged interspike interval in the hippocampal cornu ammonis-1 (CA1) field for both 16p11.2del and 129S:Δdisc1 mutant mice. These findings suggest that alteration of small conductance channels and T286 phosphorylation of CaMKII are likely shared factors underlying behavioral changes in these two genetic mouse models.
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Affiliation(s)
- Razia Sultana
- Department of Comparative Biomedical Sciences, Louisiana State
University School of Veterinary Medicine, Baton Rouge, LA, USA
| | - Tanya Ghandi
- Department of Comparative Biomedical Sciences, Louisiana State
University School of Veterinary Medicine, Baton Rouge, LA, USA
| | - Alexandra M. Davila
- Department of Comparative Biomedical Sciences, Louisiana State
University School of Veterinary Medicine, Baton Rouge, LA, USA
| | - Charles C. Lee
- Department of Comparative Biomedical Sciences, Louisiana State
University School of Veterinary Medicine, Baton Rouge, LA, USA
| | - Olalekan M. Ogundele
- Department of Comparative Biomedical Sciences, Louisiana State
University School of Veterinary Medicine, Baton Rouge, LA, USA
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Riemann D, Wallrafen R, Dresbach T. The Kohlschütter-Tönz syndrome associated gene Rogdi encodes a novel presynaptic protein. Sci Rep 2017; 7:15791. [PMID: 29150638 PMCID: PMC5693994 DOI: 10.1038/s41598-017-16004-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 11/06/2017] [Indexed: 11/09/2022] Open
Abstract
Mutations in the human homolog of the Drosophila gene Rogdi cause Kohlschütter-Tönz syndrome. This disorder is characterised by amelogenesis imperfecta, as well as severe neurological symptoms including epilepsy and psychomotor delay. However, little is known about the protein encoded by Rogdi, and hence the pathogenic mechanisms underlying Kohlschütter-Tönz syndrome have remained elusive. Using immunofluorescence of rat cultured hippocampal neurons and brain sections we find that Rogdi is enriched at synaptic sites. In addition, recombinant GFP-Rogdi expressed in cultured neurons was efficiently targeted to presynaptic sites, where it colocalised with the presynaptic scaffolding protein Bassoon and the synaptic vesicle markers Synaptophysin, Synapsin-1, VAMP2/Synaptobrevin and Mover. Our data indicate that GFP-Rogdi harbours efficient signals for presynaptic targeting, and that Rogdi is a presynaptic protein. Thus, the neurological symptoms associated with Kohlschütter-Tönz syndrome may arise from presynaptic dysfunction.
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Affiliation(s)
- Donatus Riemann
- Institute for Anatomy and Embryology, University Medical Centre Göttingen, Kreuzbergring 36, 37075, Göttingen, Germany
| | - Rebecca Wallrafen
- Institute for Anatomy and Embryology, University Medical Centre Göttingen, Kreuzbergring 36, 37075, Göttingen, Germany
| | - Thomas Dresbach
- Institute for Anatomy and Embryology, University Medical Centre Göttingen, Kreuzbergring 36, 37075, Göttingen, Germany.
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44
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DISC1 Regulates Neurogenesis via Modulating Kinetochore Attachment of Ndel1/Nde1 during Mitosis. Neuron 2017; 96:1041-1054.e5. [PMID: 29103808 DOI: 10.1016/j.neuron.2017.10.010] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Revised: 09/18/2017] [Accepted: 10/05/2017] [Indexed: 02/08/2023]
Abstract
Mutations of DISC1 (disrupted-in-schizophrenia 1) have been associated with major psychiatric disorders. Despite the hundreds of DISC1-binding proteins reported, almost nothing is known about how DISC1 interacts with other proteins structurally to impact human brain development. Here we solved the high-resolution structure of DISC1 C-terminal tail in complex with its binding domain of Ndel1. Mechanistically, DISC1 regulates Ndel1's kinetochore attachment, but not its centrosome localization, during mitosis. Functionally, disrupting DISC1/Ndel1 complex formation prolongs mitotic length and interferes with cell-cycle progression in human cells, and it causes cell-cycle deficits of radial glial cells in the embryonic mouse cortex and human forebrain organoids. We also observed similar deficits in organoids derived from schizophrenia patient induced pluripotent stem cells (iPSCs) with a DISC1 mutation that disrupts its interaction with Ndel1. Our study uncovers a new mechanism of action for DISC1 based on its structure, and it has implications for how genetic insults may contribute to psychiatric disorders.
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45
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Ryu E, Nassan M, Jenkins GD, Armasu SM, Andreazza A, McElroy SL, Vawter MP, Frye MA, Biernacka JM. A Genome-Wide Search for Bipolar Disorder Risk Loci Modified by Mitochondrial Genome Variation. MOLECULAR NEUROPSYCHIATRY 2017; 3:125-134. [PMID: 29594131 DOI: 10.1159/000464444] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 02/22/2017] [Indexed: 12/13/2022]
Abstract
Mitochondrial DNA mutations have been reported to be associated with bipolar disorder (BD). In this study, we performed genome-wide analyses to assess mitochondrial single-nucleotide polymorphism (mtSNP) effects on BD risk and early-onset BD (EOBD) among BD patients, focusing on interaction effects between nuclear SNPs (nSNPs) and mtSNPs. Common nSNP and mtSNP data from European American BD cases (n = 1,001) and controls (n = 1,034) from the Genetic Association Information Network BD study were analyzed to assess the joint effect of nSNP and nSNP-mtSNP interaction on the risk of BD and EOBD. The effect of nSNP-mtSNP interactions was also assessed. For BD risk, the strongest evidence of an association was obtained for nSNP rs1880924 in MGAM and mtSNP rs3088309 in CytB (pjoint = 8.2 × 10-8, pint = 1.4 × 10-4). Our results also suggest that the minor allele of the nSNP rs583990 in CTNNA2 increases the risk of EOBD among carriers of the mtSNP rs3088309 minor allele, while the nSNP has no effect among those carrying the mtSNP major allele (OR = 4.53 vs. 1.05, pjoint = 2.1 × 10-7, pint = 1.16 × 10-6). While our results are not statistically significant after multiple testing correction and a large-sample replication is required, our exploratory study demonstrates the potential importance of considering the mitochondrial genome for identifying genetic factors associated with BD.
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Affiliation(s)
- Euijung Ryu
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Malik Nassan
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA
| | - Gregory D Jenkins
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | | | - Ana Andreazza
- Department of Department of Psychiatry and Pharmacology, University of Toronto, Toronto, ON, Canada
| | - Susan L McElroy
- Department of Lindner Center of HOPE, Mason, OH, USA.,Department of University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Marquis P Vawter
- Department of Psychiatry and Human Behavior, School of Medicine, University of California, Irvine, Irvine, CA, USA
| | - Mark A Frye
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA
| | - Joanna M Biernacka
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA.,Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA
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Pandey H, Bourahmoune K, Honda T, Honjo K, Kurita K, Sato T, Sawa A, Furukubo-Tokunaga K. Genetic interaction of DISC1 and Neurexin in the development of fruit fly glutamatergic synapses. NPJ SCHIZOPHRENIA 2017; 3:39. [PMID: 29079805 PMCID: PMC5660244 DOI: 10.1038/s41537-017-0040-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 09/19/2017] [Accepted: 09/27/2017] [Indexed: 12/31/2022]
Abstract
Originally identified at the breakpoint of a (1;11)(q42.1; q14.3) chromosomal translocation in a Scottish family with a wide range of mental disorders, the DISC1 gene has been a focus of intensive investigations as an entry point to study the molecular mechanisms of diverse mental dysfunctions. Perturbations of the DISC1 functions lead to behavioral changes in animal models, which are relevant to psychiatric conditions in patients. In this work, we have expressed the human DISC1 gene in the fruit fly (Drosophila melanogaster) and performed a genetic screening for the mutations of psychiatric risk genes that cause modifications of DISC1 synaptic phenotypes at the neuromuscular junction. We found that DISC1 interacts with dnrx1, the Drosophila homolog of the human Neurexin (NRXN1) gene, in the development of glutamatergic synapses. While overexpression of DISC1 suppressed the total bouton area on the target muscles and stimulated active zone density in wild-type background, a partial reduction of the dnrx1 activity negated the DISC1–mediated synaptic alterations. Likewise, overexpression of DISC1 stimulated the expression of a glutamate receptor component, DGLURIIA, in wild-type background but not in the dnrx1 heterozygous background. In addition, DISC1 caused mislocalization of Discs large, the Drosophila PSD-95 homolog, in the dnrx1 heterozygous background. Analyses with a series of domain deletions have revealed the importance of axonal localization of the DISC1 protein for efficient suppression of DNRX1 in synaptic boutons. These results thus suggest an intriguing converging mechanism controlled by the interaction of DISC1 and Neurexin in the developing glutamatergic synapses. Fruit fly models uncover a potential new mechanism by which two schizophrenia risk factor genes interact to alter synaptic junctions. DISC1 gene alterations have previously been linked to psychiatric anomalies, although the gene has not been formally recognized as a schizophrenia risk factor. A US-Japan research collaboration led by the University of Tsukuba’s Katsuo Furukubo-Tokunaga expressed human DISC1 in fruit fly synapses to better understand the changes that take place when gene disruption leads to overexpression. The team found that overexpression of DISC1 affected the expression of the fruit fly counterpart to human ‘neurexin,’ a known risk factor for conditions including schizophrenia and autism spectrum disorders. The interaction between neurexin and DISC1 also influenced other synapse-altering genes. Further research is warranted to explore the roles of DISC1 and neurexin in psychiatric disease.
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Affiliation(s)
- Himani Pandey
- Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8572, Japan
| | - Katia Bourahmoune
- Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8572, Japan
| | - Takato Honda
- Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8572, Japan
| | - Ken Honjo
- Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8572, Japan
| | - Kazuki Kurita
- Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8572, Japan
| | - Tomohito Sato
- Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8572, Japan
| | - Akira Sawa
- Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Liu YN, Lu SY, Yao J. Application of induced pluripotent stem cells to understand neurobiological basis of bipolar disorder and schizophrenia. Psychiatry Clin Neurosci 2017; 71:579-599. [PMID: 28393474 DOI: 10.1111/pcn.12528] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/04/2017] [Indexed: 12/12/2022]
Abstract
The etiology of neuropsychiatric disorders, such as schizophrenia and bipolar disorder, usually involves complex combinations of genetic defects/variations and environmental impacts, which hindered, for a long time, research efforts based on animal models and patients' non-neuronal cells or post-mortem tissues. However, the development of human induced pluripotent stem cell (iPSC) technology by the Yamanaka group was immediately applied to establish cell research models for neuronal disorders. Since then, techniques to achieve highly efficient differentiation of different types of neural cells following iPSC modeling have made much progress. The fast-growing iPSC and neural differentiation techniques have brought valuable insights into the pathology and neurobiology of neuropsychiatric disorders. In this article, we first review the application of iPSC technology in modeling neuronal disorders and discuss the progress in the accompanying neural differentiation. Then, we summarize the progress in iPSC-based research that has been accomplished so far regarding schizophrenia and bipolar disorder.
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Affiliation(s)
- Yao-Nan Liu
- State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, IDG/McGovern Institute for Brain Research, Tsinghua University, Beijing, China
| | - Si-Yao Lu
- State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, IDG/McGovern Institute for Brain Research, Tsinghua University, Beijing, China
| | - Jun Yao
- State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, IDG/McGovern Institute for Brain Research, Tsinghua University, Beijing, China
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48
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Tomoda T, Hikida T, Sakurai T. Role of DISC1 in Neuronal Trafficking and its Implication in Neuropsychiatric Manifestation and Neurotherapeutics. Neurotherapeutics 2017; 14:623-629. [PMID: 28664299 PMCID: PMC5509643 DOI: 10.1007/s13311-017-0556-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Disrupted-in-schizophrenia 1 (DISC1) was initially identified as a gene disrupted by a translocation mutation co-segregating with a variety of psychotic and mood disorders in a Scottish pedigree. In agreement with this original finding, mouse models that perturb Disc1 display deficits of behaviors in specific dimensions, such as cognition and emotion, but not a motor dimension. Although DISC1 is not a risk gene for sporadic cases of specific psychiatric disorders defined by categorical diagnostic criteria (e.g., schizophrenia and major depressive disorder), DISC1 is now regarded as an important molecular lead to decipher molecular pathology for specific dimensions relevant to major mental illnesses. Emerging evidence points to the role of DISC1 in the regulation of intracellular trafficking of a wide range of neuronal cargoes. We will review recent progress in this aspect of DISC1 biology and discuss how we could utilize this body of knowledge to better understand the pathophysiology of mental illnesses.
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Affiliation(s)
- Toshifumi Tomoda
- Centre for Addiction and Mental Health, University of Toronto, Toronto, Canada.
| | - Takatoshi Hikida
- Laboratory for Advanced Brain Functions, Institute for Protein Research, Osaka University, Osaka, Japan
| | - Takeshi Sakurai
- Medical Innovation Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
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49
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Hisatsune C, Mikoshiba K. IP 3 receptor mutations and brain diseases in human and rodents. J Neurochem 2017; 141:790-807. [PMID: 28211945 DOI: 10.1111/jnc.13991] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 02/03/2017] [Accepted: 02/12/2017] [Indexed: 01/15/2023]
Abstract
The inositol 1,4,5-trisphosphate receptor (IP3 R) is a huge Ca2+ channel that is localized at the endoplasmic reticulum. The IP3 R releases Ca2+ from the endoplasmic reticulum upon binding to IP3 , which is produced by various extracellular stimuli through phospholipase C activation. All vertebrate organisms have three subtypes of IP3 R genes, which have distinct properties of IP3 -binding and Ca2+ sensitivity, and are differently regulated by phosphorylation and by their associated proteins. Each cell type expresses the three subtypes of IP3 R in a distinct proportion, which is important for creating and maintaining spatially and temporally appropriate intracellular Ca2+ level patterns for the regulation of specific physiological phenomena. Of the three types of IP3 Rs, the type 1 receptor (IP3 R1) is dominantly expressed in the brain and is important for brain function. Recent emerging evidence suggests that abnormal Ca2+ signals from the IP3 R1 are closely associated with human brain pathology. In this review, we focus on the recent advances in our knowledge of the regulation of IP3 R1 and its functional implication in human brain diseases, as revealed by IP3 R mutation studies and analysis of human disease-associated genes. This article is part of the mini review series "60th Anniversary of the Japanese Society for Neurochemistry".
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Affiliation(s)
- Chihiro Hisatsune
- Laboratory for Developmental Neurobiology, Brain Science Institute, Institute of Physical and Chemical Research (RIKEN), Saitama, Japan
| | - Katsuhiko Mikoshiba
- Laboratory for Developmental Neurobiology, Brain Science Institute, Institute of Physical and Chemical Research (RIKEN), Saitama, Japan
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50
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Yerabham ASK, Mas PJ, Decker C, Soares DC, Weiergräber OH, Nagel-Steger L, Willbold D, Hart DJ, Bradshaw NJ, Korth C. A structural organization for the Disrupted in Schizophrenia 1 protein, identified by high-throughput screening, reveals distinctly folded regions, which are bisected by mental illness-related mutations. J Biol Chem 2017; 292:6468-6477. [PMID: 28249940 DOI: 10.1074/jbc.m116.773903] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 02/22/2017] [Indexed: 11/06/2022] Open
Abstract
Disrupted in Schizophrenia 1 (DISC1) is a scaffolding protein of significant importance for neurodevelopment and a prominent candidate protein in the pathology of major mental illness. DISC1 modulates a number of critical neuronal signaling pathways through protein-protein interactions; however, the mechanism by which this occurs and how DISC1 causes mental illness is unclear, partly because knowledge of the structure of DISC1 is lacking. A lack of homology with known proteins has hindered attempts to define its domain composition. Here, we employed the high-throughput Expression of Soluble Proteins by Random Incremental Truncation (ESPRIT) technique to identify discretely folded regions of human DISC1 via solubility assessment of tens of thousands of fragments of recombinant DISC1. We identified four novel structured regions, named D, I, S, and C, at amino acids 257-383, 539-655, 635-738, and 691-836, respectively. One region (D) is located in a DISC1 section previously predicted to be unstructured. All regions encompass coiled-coil or α-helical structures, and three are involved in DISC1 oligomerization. Crucially, three of these domains would be lost or disrupted by a chromosomal translocation event after amino acid 597, which has been strongly linked to major mental illness. Furthermore, we observed that a known illness-related frameshift mutation after amino acid 807 causes the C region to form aberrantly multimeric and aggregated complexes with an unstable secondary structure. This newly revealed domain architecture of DISC1, therefore, provides a powerful framework for understanding the critical role of this protein in a variety of devastating mental illnesses.
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Affiliation(s)
| | - Philippe J Mas
- the Integrated Structural Biology Grenoble (ISBG) CNRS, CEA, Université Grenoble Alpes, EMBL, 38042 Grenoble, France
| | - Christina Decker
- the Institute of Physical Biology, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Dinesh C Soares
- the MRC Human Genetics Unit, Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, United Kingdom
| | - Oliver H Weiergräber
- the Institute of Complex Systems (ICS-6: Structural Biochemistry), Forschungszentrum Jülich, 52425 Jülich, Germany, and
| | - Luitgard Nagel-Steger
- the Institute of Physical Biology, Heinrich Heine University, 40225 Düsseldorf, Germany.,the Institute of Complex Systems (ICS-6: Structural Biochemistry), Forschungszentrum Jülich, 52425 Jülich, Germany, and
| | - Dieter Willbold
- the Institute of Physical Biology, Heinrich Heine University, 40225 Düsseldorf, Germany.,the Institute of Complex Systems (ICS-6: Structural Biochemistry), Forschungszentrum Jülich, 52425 Jülich, Germany, and
| | - Darren J Hart
- the Institute of Complex Systems (ICS-6: Structural Biochemistry), Forschungszentrum Jülich, 52425 Jülich, Germany, and
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