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Mihoub O, Chaaben AB, Boukouaci W, Lajnef M, Wu CL, Bouassida J, Saitoh K, Sugunasabesan S, Naamoune S, Richard JR, El Kefi H, Ben Ammar H, El Hechmi Z, Guemira F, Kharrat M, Leboyer M, Tamouza R. A replication study of sHLA-E influence on schizophrenia and bipolar disorder. L'ENCEPHALE 2024:S0013-7006(24)00113-1. [PMID: 38824045 DOI: 10.1016/j.encep.2024.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 03/18/2024] [Accepted: 04/05/2024] [Indexed: 06/03/2024]
Abstract
OBJECTIVES Schizophrenia (SZ) and bipolar disorders (BP) are chronic and severe neuropsychiatric diseases. These disorders are tightly related to immune deregulations. In the current study, we intended to replicate the previously reported involvement of the soluble HLA-E isoforms (sHLA-E) in the risk of developing the two conditions along with disease severity in a Tunisian population group. PATIENTS AND METHODS One hundred and twenty-four patients with schizophrenia and 121 with bipolar disorder meeting the DSM-IV criteria along 111 healthy controls were included in this present case-control study. The soluble HLA-E isoforms circulating levels were measured using the ELISA method. The statistical analyses were performed using Kruskal-Wallis and Wilcoxon rank sum tests by R software and GraphPad prism 9. RESULTS We found that the sHLA-E circulating levels were significantly higher in BP patients as compared to healthy controls (P<0.0001) and that such increases were mainly observed in patients during an acute phase of their disease (P<0.0001). In SZ patients, while we failed to observe an association with the levels of sHLA-E in the entire SZ sample, we found that high sHLA-E levels characterized stabilized patients in comparison with those during an acute episode (P=0.022). Finally, we did not observe any association between sHLA-E circulating levels and symptoms assessed by the classical clinical scales either in BP or SZ patients. CONCLUSION Overall, the present findings replicate in a Tunisian population group the previously demonstrated implication of sHLA-E circulating levels in the risk of developing BP or SZ in a French patient cohort. Such replication allows to consider HLA-E as a potent and true inflammatory marker in the context of the two disorders.
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Affiliation(s)
- Ons Mihoub
- Laboratory of Human Genetics (LR99ES10), Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis, Tunisia.
| | - Arij Ben Chaaben
- Laboratory of Human Genetics (LR99ES10), Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Wahid Boukouaci
- Translational Neuropsychiatry Laboratory and Paris Est Créteil University, Inserm U955 IMRB, 94010 Créteil, France
| | - Mohamed Lajnef
- Translational Neuropsychiatry Laboratory and Paris Est Créteil University, Inserm U955 IMRB, 94010 Créteil, France
| | - Ching-Lien Wu
- Translational Neuropsychiatry Laboratory and Paris Est Créteil University, Inserm U955 IMRB, 94010 Créteil, France
| | - Jihène Bouassida
- Translational Neuropsychiatry Laboratory and Paris Est Créteil University, Inserm U955 IMRB, 94010 Créteil, France
| | - Kaori Saitoh
- Translational Neuropsychiatry Laboratory and Paris Est Créteil University, Inserm U955 IMRB, 94010 Créteil, France
| | - Sobika Sugunasabesan
- Translational Neuropsychiatry Laboratory and Paris Est Créteil University, Inserm U955 IMRB, 94010 Créteil, France
| | - Soumia Naamoune
- Translational Neuropsychiatry Laboratory and Paris Est Créteil University, Inserm U955 IMRB, 94010 Créteil, France
| | - Jean-Romain Richard
- Translational Neuropsychiatry Laboratory and Paris Est Créteil University, Inserm U955 IMRB, 94010 Créteil, France
| | - Hamdi El Kefi
- Department of Psychiatry, Military Hospital of Tunis, Tunis, Tunisia
| | - Hanen Ben Ammar
- Department of Psychiatry F, Razi Hospital, Mannouba, Tunisia
| | | | - Fathi Guemira
- Clinical Biology, Salah Azaiz Institute, Tunis, Tunisia
| | - Maher Kharrat
- Laboratory of Human Genetics (LR99ES10), Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Marion Leboyer
- Translational Neuropsychiatry Laboratory, fédération hospitalo-universitaire de médecine de précision en psychiatrie (FHU ADAPT), DMU IMPACT, AP-HP, Paris Est Créteil University and Fondation FondaMental, Inserm U955 IMRB, 94010 Créteil, France
| | - Ryad Tamouza
- Translational Neuropsychiatry Laboratory, fédération hospitalo-universitaire de médecine de précision en psychiatrie (FHU ADAPT), DMU IMPACT, AP-HP, Paris Est Créteil University and Fondation FondaMental, Inserm U955 IMRB, 94010 Créteil, France
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Mukhopadhyay A, Deshpande SN, Bhatia T, Thelma BK. Significance of an altered lncRNA landscape in schizophrenia and cognition: clues from a case-control association study. Eur Arch Psychiatry Clin Neurosci 2023; 273:1677-1691. [PMID: 37009928 DOI: 10.1007/s00406-023-01596-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 03/20/2023] [Indexed: 04/04/2023]
Abstract
Genetic etiology of schizophrenia is poorly understood despite large genome-wide association data. Long non-coding RNAs (lncRNAs) with a probable regulatory role are emerging as important players in neuro-psychiatric disorders including schizophrenia. Prioritising important lncRNAs and analyses of their holistic interaction with their target genes may provide insights into disease biology/etiology. Of the 3843 lncRNA SNPs reported in schizophrenia GWASs extracted using lincSNP 2.0, we prioritised n = 247 based on association strength, minor allele frequency and regulatory potential and mapped them to lncRNAs. lncRNAs were then prioritised based on their expression in brain using lncRBase, epigenetic role using 3D SNP and functional relevance to schizophrenia etiology. 18 SNPs were finally tested for association with schizophrenia (n = 930) and its endophenotypes-tardive dyskinesia (n = 176) and cognition (n = 565) using a case-control approach. Associated SNPs were characterised by ChIP seq, eQTL, and transcription factor binding site (TFBS) data using FeatSNP. Of the eight SNPs significantly associated, rs2072806 in lncRNA hsaLB_IO39983 with regulatory effect on BTN3A2 was associated with schizophrenia (p = 0.006); rs2710323 in hsaLB_IO_2331 with role in dysregulation of ITIH1 with tardive dyskinesia (p < 0.05); and four SNPs with significant cognition score reduction (p < 0.05) in cases. Two of these with two additional variants in eQTL were observed among controls (p < 0.05), acting likely as enhancer SNPs and/or altering TFBS of eQTL mapped downstream genes. This study highlights important lncRNAs in schizophrenia and provides a proof of concept of novel interactions of lncRNAs with protein-coding genes to elicit alterations in immune/inflammatory pathways of schizophrenia.
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Affiliation(s)
- Anirban Mukhopadhyay
- Department of Genetics, University of Delhi South Campus, Benito Juarez Marg, New Delhi, 110021, India
| | - Smita N Deshpande
- Department of Psychiatry, Postgraduate Institute of Medical Education and Research-Dr. Ram Manohar Lohia Hospital, New Delhi, India
| | - Triptish Bhatia
- Department of Psychiatry, Postgraduate Institute of Medical Education and Research-Dr. Ram Manohar Lohia Hospital, New Delhi, India
| | - B K Thelma
- Department of Genetics, University of Delhi South Campus, Benito Juarez Marg, New Delhi, 110021, India.
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Ziliotto M, Kulmann-Leal B, Kaminski VDL, Nunes GT, Riesgo RDS, Roman T, Schuch JB, Chies JAB. HLA-G*14 bp indel variant in autism spectrum disorder in a population from southern Brazil. J Neuroimmunol 2023; 383:578194. [PMID: 37683302 DOI: 10.1016/j.jneuroim.2023.578194] [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: 06/23/2023] [Revised: 08/24/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023]
Abstract
Altered immune response during pregnancy has been associated with ASD susceptibility. HLA-G is expressed by the trophoblast at the maternal/fetal interface and induces allogenic tolerance toward the fetus. A 14-bp insertion in the HLA-G 3'UTR (rs371194629) was associated with reduced levels of HLA-G. We aimed to assess the influence of the HLA-G*14 bp indel variant in ASD susceptibility and symptomatology in a Brazilian admixed sample. The insertion genotype (14 bp+/14 bp+) was firstly associated with hetero aggression, but statistical significance was lost after correction (p = 0.035, pcorrected = 0.35). No association between the HLA-G variant and susceptibility to ASD or differential clinical manifestations were observed.
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Affiliation(s)
- Marina Ziliotto
- Laboratory of Immunobiology and Immunogenetics, Department of Genetics, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil; Post Graduate Program in Genetics and Molecular Biology, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil
| | - Bruna Kulmann-Leal
- Laboratory of Immunobiology and Immunogenetics, Department of Genetics, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil; Post Graduate Program in Genetics and Molecular Biology, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil
| | - Valéria de Lima Kaminski
- Post Graduate Program in Genetics and Molecular Biology, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil; Universidade Anhembi Morumbi, São José dos Campos, São Paulo, Brazil
| | - Guilherme Tyska Nunes
- Laboratory of Immunobiology and Immunogenetics, Department of Genetics, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil
| | - Rudimar Dos Santos Riesgo
- Child Neurology Unit, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil
| | - Tatiana Roman
- Laboratory of Psychiatric Genetics, Department of Genetics, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil
| | - Jaqueline Bohrer Schuch
- Laboratory of Psychiatric Genetics, Department of Genetics, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil; Graduate Program in Psychiatry and Behavioral Sciences, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil
| | - José Artur Bogo Chies
- Laboratory of Immunobiology and Immunogenetics, Department of Genetics, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Brazil.
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Blagburn-Blanco SV, Chappell MS, De Biase LM, DeNardo LA. Synapse-specific roles for microglia in development: New horizons in the prefrontal cortex. Front Mol Neurosci 2022; 15:965756. [PMID: 36003220 PMCID: PMC9394540 DOI: 10.3389/fnmol.2022.965756] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 07/13/2022] [Indexed: 11/19/2022] Open
Abstract
Dysfunction of both microglia and circuitry in the medial prefrontal cortex (mPFC) have been implicated in numerous neuropsychiatric disorders, but how microglia affect mPFC development in health and disease is not well understood. mPFC circuits undergo a prolonged maturation after birth that is driven by molecular programs and activity-dependent processes. Though this extended development is crucial to acquire mature cognitive abilities, it likely renders mPFC circuitry more susceptible to disruption by genetic and environmental insults that increase the risk of developing mental health disorders. Recent work suggests that microglia directly influence mPFC circuit maturation, though the biological factors underlying this observation remain unclear. In this review, we discuss these recent findings along with new studies on the cellular mechanisms by which microglia shape sensory circuits during postnatal development. We focus on the molecular pathways through which glial cells and immune signals regulate synaptogenesis and activity-dependent synaptic refinement. We further highlight how disruptions in these pathways are implicated in the pathogenesis of neurodevelopmental and psychiatric disorders associated with mPFC dysfunction, including schizophrenia and autism spectrum disorder (ASD). Using these disorders as a framework, we discuss microglial mechanisms that could link environmental risk factors including infections and stress with ongoing genetic programs to aberrantly shape mPFC circuitry.
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Affiliation(s)
- Sara V. Blagburn-Blanco
- Neuroscience Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA, United States
- Medical Scientist Training Program, University of California, Los Angeles, Los Angeles, CA, United States
- Department of Physiology, University of California, Los Angeles, Los Angeles, CA, United States
| | - Megan S. Chappell
- Neuroscience Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA, United States
- Department of Physiology, University of California, Los Angeles, Los Angeles, CA, United States
| | - Lindsay M. De Biase
- Department of Physiology, University of California, Los Angeles, Los Angeles, CA, United States
| | - Laura A. DeNardo
- Department of Physiology, University of California, Los Angeles, Los Angeles, CA, United States
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