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Luo Y, Yu Y, He H, Fan N. Acute ketamine induces neuronal hyperexcitability and deficits in prepulse inhibition by upregulating IL-6. Prog Neuropsychopharmacol Biol Psychiatry 2024; 130:110913. [PMID: 38103855 DOI: 10.1016/j.pnpbp.2023.110913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 12/04/2023] [Accepted: 12/10/2023] [Indexed: 12/19/2023]
Abstract
Acute ketamine administration results in psychotic symptoms similar to those observed in schizophrenia and is regarded as a pharmacological model of schizophrenia. Accumulating evidence suggests that patients with schizophrenia show increased IL-6 levels in the blood and cerebrospinal fluid and that IL-6 levels are associated with the severity of psychotic symptoms. In the present study, we found that a single ketamine exposure led to increased expression of IL-6 and IL-6Rα, decreased dendritic spine density, increased expression and currents of T-type calcium channels, and increased neuron excitability in the hippocampal CA1 area 12 h after exposure. Acute ketamine administration also led to impaired prepulse inhibition (PPI) 12 h after administration. Additionally, we found that the expression of signaling molecules IKKα/β, NF-κB, JAK2, and STAT3 was upregulated 12 h after a single ketamine injection. The decreases in dendritic spine density, the increases in calcium currents and neuron excitability, and the impairments in PPI were ameliorated by blocking IL-6 or IL-6Rα. Our findings show that blocking IL-6 or its receptor may protect hippocampal neurons from hyperexcitability, thereby ameliorating ketamine-induced psychotic effects. Our study provides additional evidence that targeting IL-6 and its receptor is a potential strategy for treating psychotic symptoms in acute ketamine-induced psychosis and schizophrenia.
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Affiliation(s)
- Yayan Luo
- The Affiliated Brain Hospital of Guangzhou Medical University, 36 Mingxin Road, Liwan District, Guangzhou, Guangdong Province 510370, China
| | - Yang Yu
- The Affiliated Brain Hospital of Guangzhou Medical University, 36 Mingxin Road, Liwan District, Guangzhou, Guangdong Province 510370, China
| | - Hongbo He
- The Affiliated Brain Hospital of Guangzhou Medical University, 36 Mingxin Road, Liwan District, Guangzhou, Guangdong Province 510370, China
| | - Ni Fan
- The Affiliated Brain Hospital of Guangzhou Medical University, 36 Mingxin Road, Liwan District, Guangzhou, Guangdong Province 510370, China.
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2
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Li W, Chen R, Feng L, Dang X, Liu J, Chen T, Yang J, Su X, Lv L, Li T, Zhang Z, Luo XJ. Genome-wide meta-analysis, functional genomics and integrative analyses implicate new risk genes and therapeutic targets for anxiety disorders. Nat Hum Behav 2024; 8:361-379. [PMID: 37945807 DOI: 10.1038/s41562-023-01746-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 10/04/2023] [Indexed: 11/12/2023]
Abstract
Anxiety disorders are the most prevalent mental disorders. However, the genetic etiology of anxiety disorders remains largely unknown. Here we conducted a genome-wide meta-analysis on anxiety disorders by including 74,973 (28,392 proxy) cases and 400,243 (146,771 proxy) controls. We identified 14 risk loci, including 10 new associations near CNTNAP5, MAP2, RAB9BP1, BTN1A1, PRR16, PCLO, PTPRD, FARP1, CDH2 and RAB27B. Functional genomics and fine-mapping pinpointed the potential causal variants, and expression quantitative trait loci analysis revealed the potential target genes regulated by the risk variants. Integrative analyses, including transcriptome-wide association study, proteome-wide association study and colocalization analyses, prioritized potential causal genes (including CTNND1 and RAB27B). Evidence from multiple analyses revealed possibly causal genes, including RAB27B, BTN3A2, PCLO and CTNND1. Finally, we showed that Ctnnd1 knockdown affected dendritic spine density and resulted in anxiety-like behaviours in mice, revealing the potential role of CTNND1 in anxiety disorders. Our study identified new risk loci, potential causal variants and genes for anxiety disorders, providing insights into the genetic architecture of anxiety disorders and potential therapeutic targets.
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Affiliation(s)
- Wenqiang Li
- Henan Mental Hospital, the Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Rui Chen
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Laipeng Feng
- Henan Mental Hospital, the Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Xinglun Dang
- Department of Psychosomatics and Psychiatry, Zhongda Hospital, School of Medicine, Advanced Institute for Life and Health, Southeast University, Nanjing, China
| | - Jiewei Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Tengfei Chen
- Henan Mental Hospital, the Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Jinfeng Yang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Xi Su
- Henan Mental Hospital, the Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Luxian Lv
- Henan Mental Hospital, the Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Tao Li
- Affiliated Mental Health Center & Hangzhou Seventh People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhijun Zhang
- Department of Psychosomatics and Psychiatry, Zhongda Hospital, School of Medicine, Advanced Institute for Life and Health, Southeast University, Nanjing, China
- Department of Neurology, Affiliated Zhongda Hospital, Southeast University, Nanjing, China
- Department of Mental Health and Public Health, Faculty of Life and Health Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Xiong-Jian Luo
- Department of Psychosomatics and Psychiatry, Zhongda Hospital, School of Medicine, Advanced Institute for Life and Health, Southeast University, Nanjing, China.
- Department of Neurology, Affiliated Zhongda Hospital, Southeast University, Nanjing, China.
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3
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Rochín-Hernández LJ, Jiménez-Acosta MA, Ramírez-Reyes L, Figueroa-Corona MDP, Sánchez-González VJ, Orozco-Barajas M, Meraz-Ríos MA. The Proteome Profile of Olfactory Ecto-Mesenchymal Stem Cells-Derived from Patients with Familial Alzheimer's Disease Reveals New Insights for AD Study. Int J Mol Sci 2023; 24:12606. [PMID: 37628788 PMCID: PMC10454072 DOI: 10.3390/ijms241612606] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/01/2023] [Accepted: 08/04/2023] [Indexed: 08/27/2023] Open
Abstract
Alzheimer's disease (AD), the most common neurodegenerative disease and the first cause of dementia worldwide, has no effective treatment, and its pathological mechanisms are not yet fully understood. We conducted this study to explore the proteomic differences associated with Familial Alzheimer's Disease (FAD) in olfactory ecto-mesenchymal stem cells (MSCs) derived from PSEN1 (A431E) mutation carriers compared with healthy donors paired by age and gender through two label-free liquid chromatography-mass spectrometry approaches. The first analysis compared carrier 1 (patient with symptoms, P1) and its control (healthy donor, C1), and the second compared carrier 2 (patient with pre-symptoms, P2) with its respective control cells (C2) to evaluate whether the protein alterations presented in the symptomatic carrier were also present in the pre-symptom stages. Finally, we analyzed the differentially expressed proteins (DEPs) for biological and functional enrichment. These proteins showed impaired expression in a stage-dependent manner and are involved in energy metabolism, vesicle transport, actin cytoskeleton, cell proliferation, and proteostasis pathways, in line with previous AD reports. Our study is the first to conduct a proteomic analysis of MSCs from the Jalisco FAD patients in two stages of the disease (symptomatic and presymptomatic), showing these cells as a new and excellent in vitro model for future AD studies.
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Affiliation(s)
- Lory J. Rochín-Hernández
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Instituto Politécnico Nacional 2508, Ciudad de México 07360, Mexico; (L.J.R.-H.); (M.A.J.-A.); (M.d.P.F.-C.)
| | - Miguel A. Jiménez-Acosta
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Instituto Politécnico Nacional 2508, Ciudad de México 07360, Mexico; (L.J.R.-H.); (M.A.J.-A.); (M.d.P.F.-C.)
| | - Lorena Ramírez-Reyes
- Unidad de Genómica, Proteómica y Metabolómica, Laboratorio Nacional de Servicios Experimentales (LaNSE), Centro de Investigación y de Estudios Avanzados, Ciudad de México 07360, Mexico;
| | - María del Pilar Figueroa-Corona
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Instituto Politécnico Nacional 2508, Ciudad de México 07360, Mexico; (L.J.R.-H.); (M.A.J.-A.); (M.d.P.F.-C.)
| | - Víctor J. Sánchez-González
- Centro Universitario de Los Altos, Universidad de Guadalajara, Tepatitlán de Morelos 47620, Mexico; (V.J.S.-G.); (M.O.-B.)
| | - Maribel Orozco-Barajas
- Centro Universitario de Los Altos, Universidad de Guadalajara, Tepatitlán de Morelos 47620, Mexico; (V.J.S.-G.); (M.O.-B.)
| | - Marco A. Meraz-Ríos
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Instituto Politécnico Nacional 2508, Ciudad de México 07360, Mexico; (L.J.R.-H.); (M.A.J.-A.); (M.d.P.F.-C.)
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Raj Shekhar B, Rupani K, Raghunath Parkar S, Sunil Nayak A, Vasant Kumbhar B, Khare SP, Menon S, Gawde H, Kumar Das D. Identifying Novel Risk Conferring Genes Involved in Glycosylation Processes with Familial Schizophrenia in an Indian Cohort: Prediction of ADAMTS9 gene Variant for Structural Stability. Gene 2023; 872:147443. [PMID: 37105505 DOI: 10.1016/j.gene.2023.147443] [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: 02/24/2023] [Revised: 04/10/2023] [Accepted: 04/21/2023] [Indexed: 04/29/2023]
Abstract
Schizophrenia is a complex neuropsychiatric disorder and heritability is as high as 80% making it the most heritable mental disorder. Although GWAS has identified numerous variants, the pathophysiology is still elusive. Here, an attempt was made to identify genetic risk factors in familial cases of schizophrenia that are associated with a common causative pathway. To achieve this objective, exome sequencing was done in 4 familial cases and identified six unique coding variants in five genes. Among these genes, PIGQ gene has two pathogenic variants, one nonsense and in-frame deletion. One missense variant in GALNT16 and one in GALNT5 have variable damaging score, however, the other variants, in ADAMTS9 and in LTBP4 have the highest damaging score. Further analysis showed that the variant of LTBP4 was not present in the functional domain. The other missense variant in the ADAMTS9 gene was found to be significant and was present in the thrombospondin repeat motif, one of the important motifs. Detailed molecular dynamics simulation study on this variant showed a damaging effect on structural stability. Since, all these genes culminated into the glycosylation process, it was evident that an aberrant glycosylation process may be one of the risk factors. Although, extracellular matrix formation through glycosylation have been shown to be associated, the involvement of ADAMTS9 and PIGQ gene mediated glycosylation has not been reported. In this paper, a novel link between ADAMTS9 and PIGQ gene with schizophrenia have been reported. Therefore, this novel observation has contributed immensely to the existing knowledge on risk factor of Schizophrenia.
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Affiliation(s)
- Bipin Raj Shekhar
- Genetic Research Centre, ICMR-National Institute for Research in Reproductive and Child Health, Parel, Mumbai, Maharashtra-400012, India; Stem Cell Biology, ICMR-National Institute for Research in Reproductive and Child Health, Parel, Mumbai, Maharashtra-400012, India
| | - Karishma Rupani
- Department of Psychiatry, Seth GS Medical College and KEM Hospital, Parel, Mumbai, Maharashtra-400012, India
| | - Shubhangi Raghunath Parkar
- Department of Psychiatry, Seth GS Medical College and KEM Hospital, Parel, Mumbai, Maharashtra-400012, India
| | - Ajita Sunil Nayak
- Department of Psychiatry, Seth GS Medical College and KEM Hospital, Parel, Mumbai, Maharashtra-400012, India
| | - Bajarang Vasant Kumbhar
- Department of Biological Sciences, Sunandan Divatia School of Science, NMIMS University (Deemed), Mumbai, Maharashtra-400012, India
| | - Satyajeet P Khare
- Symbiosis School of Biological Sciences, Symbiosis International University, Pune, Maharashtra-412115, India
| | - Shyla Menon
- Stem Cell Biology, ICMR-National Institute for Research in Reproductive and Child Health, Parel, Mumbai, Maharashtra-400012, India
| | - Harshavardhan Gawde
- Genetic Research Centre, ICMR-National Institute for Research in Reproductive and Child Health, Parel, Mumbai, Maharashtra-400012, India
| | - Dhanjit Kumar Das
- Stem Cell Biology, ICMR-National Institute for Research in Reproductive and Child Health, Parel, Mumbai, Maharashtra-400012, India.
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5
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Schizophrenia and psychedelic state: Dysconnection versus hyper-connection. A perspective on two different models of psychosis stemming from dysfunctional integration processes. Mol Psychiatry 2023; 28:59-67. [PMID: 35931756 DOI: 10.1038/s41380-022-01721-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 07/15/2022] [Accepted: 07/22/2022] [Indexed: 01/07/2023]
Abstract
Psychotic symptoms are a cross-sectional dimension affecting multiple diagnostic categories, despite schizophrenia represents the prototype of psychoses. Initially, dopamine was considered the most involved molecule in the neurobiology of schizophrenia. Over the next years, several biological factors were added to the discussion helping to constitute the concept of schizophrenia as a disease marked by a deficit of functional integration, contributing to the formulation of the Dysconnection Hypothesis in 1995. Nowadays the notion of dysconnection persists in the conceptualization of schizophrenia enriched by neuroimaging findings which corroborate the hypothesis. At the same time, in recent years, psychedelics received a lot of attention by the scientific community and astonishing findings emerged about the rearrangement of brain networks under the effect of these compounds. Specifically, a global decrease in functional connectivity was found, highlighting the disintegration of preserved and functional circuits and an increase of overall connectivity in the brain. The aim of this paper is to compare the biological bases of dysconnection in schizophrenia with the alterations of neuronal cyto-architecture induced by psychedelics and the consequent state of cerebral hyper-connection. These two models of psychosis, despite diametrically opposed, imply a substantial deficit of integration of neural signaling reached through two opposite paths.
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Mealer RG, Williams SE, Noel M, Yang B, D’Souza AK, Nakata T, Graham DB, Creasey EA, Cetinbas M, Sadreyev RI, Scolnick EM, Woo CM, Smoller JW, Xavier RJ, Cummings RD. The schizophrenia-associated variant in SLC39A8 alters protein glycosylation in the mouse brain. Mol Psychiatry 2022; 27:1405-1415. [PMID: 35260802 PMCID: PMC9106890 DOI: 10.1038/s41380-022-01490-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 02/07/2022] [Accepted: 02/14/2022] [Indexed: 01/13/2023]
Abstract
A missense mutation (A391T) in SLC39A8 is strongly associated with schizophrenia in genomic studies, though the molecular connection to the brain is unknown. Human carriers of A391T have reduced serum manganese, altered plasma glycosylation, and brain MRI changes consistent with altered metal transport. Here, using a knock-in mouse model homozygous for A391T, we show that the schizophrenia-associated variant changes protein glycosylation in the brain. Glycosylation of Asn residues in glycoproteins (N-glycosylation) was most significantly impaired, with effects differing between regions. RNAseq analysis showed negligible regional variation, consistent with changes in the activity of glycosylation enzymes rather than gene expression. Finally, nearly one-third of detected glycoproteins were differentially N-glycosylated in the cortex, including members of several pathways previously implicated in schizophrenia, such as cell adhesion molecules and neurotransmitter receptors that are expressed across all cell types. These findings provide a mechanistic link between a risk allele and potentially reversible biochemical changes in the brain, furthering our molecular understanding of the pathophysiology of schizophrenia and a novel opportunity for therapeutic development.
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Affiliation(s)
- Robert G. Mealer
- Psychiatric and Neurodevelopmental Genetics Unit, Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA.,Center for Precision Psychiatry, Department of Psychiatry, Massachusetts General Hospital. Harvard Medical School, Boston, MA.,National Center for Functional Glycomics, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.,The Stanley Center for Psychiatric Research at Broad Institute of Harvard/MIT, Cambridge, MA.,Corresponding Author: Robert Gene Mealer, M.D., Ph.D., Richard B. Simches Research Center, 185 Cambridge St, 6th Floor, Boston, MA 02114,
| | - Sarah E. Williams
- Psychiatric and Neurodevelopmental Genetics Unit, Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA.,National Center for Functional Glycomics, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Maxence Noel
- National Center for Functional Glycomics, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Bo Yang
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA
| | | | - Toru Nakata
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA.,Department of Molecular Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA.,Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Daniel B. Graham
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA.,Department of Molecular Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA.,Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Elizabeth A. Creasey
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA.,Department of Molecular Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA.,Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Murat Cetinbas
- Department of Molecular Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Ruslan I. Sadreyev
- Department of Molecular Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Edward M. Scolnick
- Psychiatric and Neurodevelopmental Genetics Unit, Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA.,The Stanley Center for Psychiatric Research at Broad Institute of Harvard/MIT, Cambridge, MA
| | - Christina M. Woo
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA
| | - Jordan W. Smoller
- Psychiatric and Neurodevelopmental Genetics Unit, Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA.,Center for Precision Psychiatry, Department of Psychiatry, Massachusetts General Hospital. Harvard Medical School, Boston, MA.,The Stanley Center for Psychiatric Research at Broad Institute of Harvard/MIT, Cambridge, MA
| | - Ramnik J. Xavier
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA.,Department of Molecular Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA.,Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Richard D. Cummings
- National Center for Functional Glycomics, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
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