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Akkuş Eİ, Bayoğlu B, Kocabaşoğlu N, Yıldız JB, Cengiz M. Association of rs11081062 polymorphism of DLGAP1 gene and levels of SLC1A1 protein with obsessive-compulsive disorder. Nucleosides Nucleotides Nucleic Acids 2024:1-15. [PMID: 38593060 DOI: 10.1080/15257770.2024.2336213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 03/24/2024] [Indexed: 04/11/2024]
Abstract
Glutamate is an important neurotransmitter known to be effective in obsessive-compulsive disorder (OCD). The aim of this study is to investigate the relationship between the DLGAP1 gene encoding the scaffold protein of ionotropic glutamate receptors and the SLC1A1 gene encoding the glutamate transporter protein with OCD. Study groups consisted of 95 patients with OCD and 100 healthy controls. The severity of OCD in the patient group was determined by using the Y-BOCS. Single nucleotide polymorphisms of rs11081062 (C/T) in DLGAP1 and rs587777696 (C/T) in SLC1A1 were analyzed by real-time PCR. Levels of SLC1A1 protein were determined by ELISA. A significant difference was found between genotype distributions of rs11081062 in DLGAP1 in study groups (p < 0.001). No significant association was found rs587777696 in SLC1A1 in OCD patients and controls. SLC1A1 protein levels were found to be lower in OCD patients compared to controls (p = 0.005). According to OCD risk estimates for genotypes distributions of rs11081062 in DLGAP1, having CT + TT genotypes was associated with the occurrence of sexual and religious obsessions and counting compulsions (p = 0.038, OR = 2.98; p = 0.033, OR = 3.43; p = 0.035, OR = 2.66, respectively). CT genotype in DLGAP1 rs11081062 polymorphism was found to increase the risk of OCD in the female gender (p = 0.042, OR = 3.01). This study suggests that rs11081062 in DLGAP1 may be associated with OCD and that SLC1A1 protein levels may be involved in the occurrence of OCD. We believe that our research can contribute to the understanding of the importance of glutamate in OCD.
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Affiliation(s)
- Efruz İrem Akkuş
- Cerrahpaşa Faculty of Medicine, Department of Medical Biology, Istanbul University-Cerrahpaşa, Istanbul, Türkiye
| | - Burcu Bayoğlu
- Cerrahpaşa Faculty of Medicine, Department of Medical Biology, Istanbul University-Cerrahpaşa, Istanbul, Türkiye
| | - Neşe Kocabaşoğlu
- Cerrahpaşa Faculty of Medicine, Department of Psychiatry, Istanbul University-Cerrahpaşa, Istanbul, Türkiye
| | - Jansed Berfin Yıldız
- Cerrahpaşa Faculty of Medicine, Department of Medical Biology, Istanbul University-Cerrahpaşa, Istanbul, Türkiye
| | - Müjgan Cengiz
- Cerrahpaşa Faculty of Medicine, Department of Medical Biology, Istanbul University-Cerrahpaşa, Istanbul, Türkiye
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2
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Pourtavakoli A, Ghafouri-Fard S, Eslami S, Brand S, Taheri M. Expression assay of calcium signaling related lncRNAs in autism. Mol Biol Rep 2024; 51:185. [PMID: 38265729 DOI: 10.1007/s11033-023-09182-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 12/18/2023] [Indexed: 01/25/2024]
Abstract
BACKGROUND Calcium signaling has essential roles in the neurodevelopmental processes and pathophysiology of related disorders for instance autism spectrum disorder (ASD). METHODS AND RESULTS We compared expression of SLC1A1, SLC25A12, RYR2 and ATP2B2, as well as related long non-coding RNAs, namely LINC01231, lnc-SLC25A12, lnc-MTR-1 and LINC00606 in the peripheral blood of patients with ASD with healthy children. Expression of SLC1A1 was lower in ASD samples compared with control samples (Expression ratio (95% CI) 0.24 (0.08-0.77), adjusted P value = 0.01). Contrary, expression of LINC01231 was higher in cases compared with control samples (Expression ratio (95% CI) 25.52 (4.19-154), adjusted P value = 0.0006) and in male cases compared with healthy males (Expression ratio (95% CI) 28.24 (1.91-418), adjusted P value = 0.0009). RYR2 was significantly over-expressed in ASD children compared with control samples (Expression ratio (95% CI) 4.5 (1.16-17.4), adjusted P value = 0.029). Then, we depicted ROC curves for SLC1A1, LINC01231, RYR2 and lnc-SLC25A12 transcripts showing diagnostic power of 0.68, 0.75, 0.67 and 0.59, respectively. CONCLUSION To sum up, the current study displays possible role of calcium related genes and lncRNAs in the development of ASD.
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Affiliation(s)
- Ashkan Pourtavakoli
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Soudeh Ghafouri-Fard
- Men's Health and Reproductive Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Solat Eslami
- Department of Medical Biotechnology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Serge Brand
- Center for Affective, Stress and Sleep Disorders, Psychiatric Clinics, University of Basel, Basel, Switzerland
| | - Mohammad Taheri
- Institute of Human Genetics, Jena University Hospital, Jena, Germany.
- Urology and Nephrology Research Centre, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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3
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Liu J, Yan J, Qu F, Mo W, Yu H, Hu P, Zhang Z. A pilot study on glutamate receptor and carrier gene variants and risk of childhood autism spectrum. Metab Brain Dis 2023; 38:2477-2488. [PMID: 37578654 DOI: 10.1007/s11011-023-01272-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 07/26/2023] [Indexed: 08/15/2023]
Abstract
Imbalanced glutamate signaling has been implicated in the development of autism spectrum disorder (ASD). This case-control study was to examine single nucleotide polymorphisms (SNPs) in glutamate receptor and carrier genes and determine their association with childhood ASD in a Chinese Han population. A total of 12 SNPs in genes encoding glutamate receptors (GRM7 and GRM8) and carriers (SLC1A1 and SLC25A12) were examined in 249 autistic children and 353 healthy controls. The Childhood Autism Rating Scale (CARS) and its verbal communication domain were applied to evaluate the severity of the disease and language impairment, respectively. The T allele of rs2292813 in the SLC25A12 gene was significantly associated with an increased risk of ASD (odds ratio (OD) = 1.7, 95% confidence interval (CI): 1.1-2.6, P = 0.0107). Neither the genotypes nor allele distributions of other SNPs were associated with the risk of ASD. Notably, rs1800656 and rs2237731 in the GRM8 gene, but not other SNPs, were related to the severity of language impairment. All SNPs were not correlated with the overall severity of ASD. Our findings support associations between the SLC25A12 gene variant and the risk of childhood ASD, and between the GRM8 gene variant and the severity of language impairment in the Chinese Han population.
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Affiliation(s)
- Jun Liu
- Department of Clinical Laboratory, Affiliated Xiaoshan Hospital of Hangzhou Normal University, No. 728, Yucai North Road, Xiaoshan District, Hangzhou, 311202, China.
| | - Jing Yan
- Department of Clinical Laboratory, Affiliated Xiaoshan Hospital of Hangzhou Normal University, No. 728, Yucai North Road, Xiaoshan District, Hangzhou, 311202, China
| | - Fei Qu
- Department of Clinical Laboratory, Affiliated Xiaoshan Hospital of Hangzhou Normal University, No. 728, Yucai North Road, Xiaoshan District, Hangzhou, 311202, China
| | - Weiming Mo
- Department of Clinical Laboratory, Affiliated Xiaoshan Hospital of Hangzhou Normal University, No. 728, Yucai North Road, Xiaoshan District, Hangzhou, 311202, China
| | - Hong Yu
- Department of Clinical Psychology, Xiaoshan First Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
| | - Pingfang Hu
- Department of Clinical Laboratory, Affiliated Xiaoshan Hospital of Hangzhou Normal University, No. 728, Yucai North Road, Xiaoshan District, Hangzhou, 311202, China
| | - Zengyu Zhang
- Department of Pediatrics, Xiaoshan First Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
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4
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Yang Z, Su W, Wei X, Qu S, Zhao D, Zhou J, Wang Y, Guan Q, Qin C, Xiang J, Zen K, Yao B. HIF-1α drives resistance to ferroptosis in solid tumors by promoting lactate production and activating SLC1A1. Cell Rep 2023; 42:112945. [PMID: 37542723 DOI: 10.1016/j.celrep.2023.112945] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 04/06/2023] [Accepted: 07/21/2023] [Indexed: 08/07/2023] Open
Abstract
Solid tumors have developed robust ferroptosis resistance. The mechanism underlying ferroptosis resistance regulation in solid tumors, however, remains elusive. Here, we report that the hypoxic tumor microenvironment potently promotes ferroptosis resistance in solid tumors in a hypoxia-inducible factor 1α (HIF-1α)-dependent manner. In combination with HIF-2α, which promotes tumor ferroptosis under hypoxia, HIF-1α is the main driver of hypoxia-induced ferroptosis resistance. Mechanistically, HIF-1α-induced lactate contributes to ferroptosis resistance in a pH-dependent manner that is parallel to the classical SLC7A11 and FSP1 systems. In addition, HIF-1α also enhances transcription of SLC1A1, an important glutamate transporter, and promotes cystine uptake to promote ferroptosis resistance. In support of the role of hypoxia in ferroptosis resistance, silencing HIF-1α sensitizes mouse solid tumors to ferroptosis inducers. In conclusion, our results reveal a mechanism by which hypoxia drives ferroptosis resistance and identify the combination of hypoxia alleviation and ferroptosis induction as a promising therapeutic strategy for solid tumors.
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Affiliation(s)
- Zhou Yang
- National Experimental Teaching Center of Basic Medical Science, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China; Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Wei Su
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China; Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Xiyi Wei
- The State Key Lab of Reproductive Medicine, Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Shuang Qu
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Dan Zhao
- Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jingwan Zhou
- National Experimental Teaching Center of Basic Medical Science, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Yunjun Wang
- Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Qing Guan
- Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Chao Qin
- The State Key Lab of Reproductive Medicine, Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
| | - Jun Xiang
- Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
| | - Ke Zen
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Science, Nanjing University, Nanjing, China.
| | - Bing Yao
- National Experimental Teaching Center of Basic Medical Science, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China; Department of Medical Genetics, School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China.
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5
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Wang WF, Zhong HJ, Cheng S, Fu D, Zhao Y, Cai HM, Xiong J, Zhao WL. A nuclear NKRF interacting long noncoding RNA controls EBV eradication and suppresses tumor progression in natural killer/T-cell lymphoma. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166722. [PMID: 37084822 DOI: 10.1016/j.bbadis.2023.166722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 04/01/2023] [Accepted: 04/14/2023] [Indexed: 04/23/2023]
Abstract
Long intergenic noncoding RNAs (lincRNAs) are differentially expressed in EBV-infected cells and play an essential role in tumor progression. Molecular pathogenesis of lincRNAs in EBV-driven natural killer T cell lymphoma (NKTCL) remains unclear. Here we investigated the ncRNA profile using high-throughput RNA sequencing data of 439 lymphoma samples and screened out LINC00486, whose downregulation was further validated by quantitative real-time polymerase chain reaction in EBV-encoded RNA (EBER)-positive lymphoma, particularly NKTCL. Both in vitro and in vivo studies revealed the tumor suppressive function of LINC00486 through inhibiting tumor cell growth and inducing G0/G1 cell cycle arrest. As mechanism of action, LINC00486 specifically interacted with NKRF to abrogate its binding with phosphorylated p65, activated NF-κB/TNF-α signaling and subsequently enhanced EBV eradication. Solute carrier family 1 member 1 (SLC1A1), upregulated and mediated the glutamine-addiction and tumor progression in NKTCL, was negatively correlated with the expression of NKRF. NKRF specifically bound to the promoter and transcriptionally downregulated the expression of SLC1A1, as evidenced by Chromatin Immunoprecipitation (ChIP) and luciferase assay. Collectively, LINC00486 functioned as a tumor suppressor and counteracted EBV infection in NKTCL. Our study improved the knowledge of EBV-driven oncogenesis in NKTCL and provided the clinical rationale of EBV eradication in anti-cancer treatment.
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Affiliation(s)
- Wen-Fang Wang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Hui-Juan Zhong
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shu Cheng
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Di Fu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan Zhao
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hua-Man Cai
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jie Xiong
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Wei-Li Zhao
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Pôle de Recherches Sino-Français en Science du Vivant et Génomique, Laboratory of Molecular Pathology, Shanghai, China.
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6
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Escobar AP, Martínez-Pinto J, Silva-Olivares F, Sotomayor-Zárate R, Moya PR. Altered Grooming Syntax and Amphetamine-Induced Dopamine Release in EAAT3 Overexpressing Mice. Front Cell Neurosci 2021; 15:661478. [PMID: 34234648 PMCID: PMC8255620 DOI: 10.3389/fncel.2021.661478] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 05/17/2021] [Indexed: 01/06/2023] Open
Abstract
The excitatory amino acid transporter EAAT3 plays an important role in the neuronal uptake of glutamate regulating the activation of glutamate receptors. Polymorphisms in the gene-encoding EAAT3 have been associated with obsessive-compulsive disorder (OCD), although the mechanisms underlying this relationship are still unknown. We recently reported that mice with increased EAAT3 expression in forebrain neurons (EAAT3 g lo /CMKII) display behavioral and synaptic features relevant to OCD, including increased grooming, higher anxiety-like behavior and altered cortico-striatal synaptic function. The dopamine neurotransmitter system is implicated in ritualistic behaviors. Indeed, dopaminergic neurons express EAAT3, and mice lacking EAAT3 exhibit decreased dopamine release and decreased expression of the dopamine D1 receptor. Moreover, EAAT3 plays a role on the effect of the psychostimulant amphetamine. As such, we sought to determine if the OCD-like behavior in EAAT3 g lo /CMKII mice is accompanied by altered nigro-striatal dopaminergic transmission. The aim of this study was to analyze dopamine transmission both in basal conditions and after an acute challenge of amphetamine, using behavioral, neurochemical, molecular, and cellular approaches. We found that in basal conditions, EAAT3 g lo /CMKII mice performed more grooming events and that they remained in phase 1 of the grooming chain syntax compared with control littermates. Administration of amphetamine increased the number of grooming events in control mice, while EAAT3 g lo /CMKII mice remain unaffected. Interestingly, the grooming syntax of amphetamine-control mice resembled that of EAAT3 g lo /CMKII mice in basal conditions. Using in vivo microdialysis, we found decreased basal dopamine levels in EAAT3 g lo /CMKII compared with control mice. Unexpectedly, we found that after acute amphetamine, EAAT3 g lo /CMKII mice had a higher release of dopamine compared with that of control mice, suggesting that EAAT3 overexpression leads to increased dopamine releasability. To determine postsynaptic effect of EAAT3 overexpression over dopamine transmission, we performed Western blot analysis of dopaminergic proteins and found that EAAT3 g lo /CMKII mice have higher expression of D2 receptors, suggesting a higher inhibition of the indirect striatal pathway. Together, the data indicate that EAAT3 overexpression impacts on dopamine transmission, making dopamine neurons more sensitive to the effect of amphetamine and leading to a disbalance between the direct and indirect striatal pathways that favors the performance of repetitive behaviors.
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Affiliation(s)
- Angélica P Escobar
- Facultad de Ciencias, Centro Interdisciplinario de Neurociencia de Valparaíso (CINV), Universidad de Valparaíso, Valparaiso, Chile.,Facultad de Ciencias, Instituto de Fisiología, Universidad de Valparaíso, Valparaiso, Chile
| | - Jonathan Martínez-Pinto
- Facultad de Ciencias, Instituto de Fisiología, Universidad de Valparaíso, Valparaiso, Chile.,Facultad de Ciencias, Centro de Neurobiología y Fisiopatología Integrativa (CENFI), Universidad de Valparaíso, Valparaiso, Chile
| | - Francisco Silva-Olivares
- Facultad de Ciencias, Instituto de Fisiología, Universidad de Valparaíso, Valparaiso, Chile.,Facultad de Ciencias, Centro de Neurobiología y Fisiopatología Integrativa (CENFI), Universidad de Valparaíso, Valparaiso, Chile
| | - Ramón Sotomayor-Zárate
- Facultad de Ciencias, Instituto de Fisiología, Universidad de Valparaíso, Valparaiso, Chile.,Facultad de Ciencias, Centro de Neurobiología y Fisiopatología Integrativa (CENFI), Universidad de Valparaíso, Valparaiso, Chile
| | - Pablo R Moya
- Facultad de Ciencias, Centro Interdisciplinario de Neurociencia de Valparaíso (CINV), Universidad de Valparaíso, Valparaiso, Chile.,Facultad de Ciencias, Instituto de Fisiología, Universidad de Valparaíso, Valparaiso, Chile
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7
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Ghosh S, Won SJ, Wang J, Fong R, Butler NJM, Moss A, Wong C, Pan J, Sanchez J, Huynh A, Wu L, Manfredsson FP, Swanson RA. α-synuclein aggregates induce c-Abl activation and dopaminergic neuronal loss by a feed-forward redox stress mechanism. Prog Neurobiol 2021; 202:102070. [PMID: 33951536 DOI: 10.1016/j.pneurobio.2021.102070] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 01/21/2021] [Accepted: 04/27/2021] [Indexed: 11/21/2022]
Abstract
Oxidative stress and α-synuclein aggregation both drive neurodegeneration in Parkinson's disease, and the protein kinase c-Abl provides a potential amplifying link between these pathogenic factors. Suppressing interactions between these factors may thus be a viable therapeutic approach for this disorder. To evaluate this possibility, pre-formed α-synuclein fibrils (PFFs) were used to induce α-synuclein aggregation in neuronal cultures. Exposure to PFFs induced oxidative stress and c-Abl activation in wild-type neurons. By contrast, α-synuclein - deficient neurons, which cannot form α-synuclein aggregates, failed to exhibit either oxidative stress or c-Abl activation. N-acetyl cysteine, a thiol repletion agent that supports neuronal glutathione metabolism, suppressed the PFF - induced redox stress and c-Abl activation in the wild-type neurons, and likewise suppressed α-synuclein aggregation. Parallel findings were observed in mouse brain: PFF-induced α-synuclein aggregation in the substantia nigra was associated with redox stress, c-Abl activation, and dopaminergic neuronal loss, along with microglial activation and motor impairment, all of which were attenuated with oral N-acetyl cysteine. Similar results were obtained using AAV-mediated α-synuclein overexpression as an alternative means of driving α-synuclein aggregation in vivo. These findings show that α-synuclein aggregates induce c-Abl activation by a redox stress mechanism. c-Abl activation in turn promotes α-synuclein aggregation, in a feed-forward interaction. The capacity of N-acetyl cysteine to interrupt this interaction adds mechanistic support its consideration as a therapeutic in Parkinson's disease.
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8
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Li W, Su X, Chen T, Li Z, Yang Y, Zhang L, Liu Q, Shao M, Zhang Y, Ding M, Lu Y, Yu H, Fan X, Song M, Lv L. Solute Carrier Family 1 ( SLC1A1) Contributes to Susceptibility and Psychopathology Symptoms of Schizophrenia in the Han Chinese Population. Front Psychiatry 2020; 11:559210. [PMID: 33173509 PMCID: PMC7538510 DOI: 10.3389/fpsyt.2020.559210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 08/31/2020] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE Schizophrenia (SZ) is a common and complex psychiatric disorder that has a significant genetic component. The glutamate hypothesis describes one possible pathogenesis of SZ. The solute carrier family 1 gene (SLC1A1) is one of several genes thought to play a critical role in regulating the glutamatergic system and is strongly implicated in the pathophysiology of SZ. In this study, we identify polymorphisms of the SLC1A1 gene that may confer susceptibility to SZ in the Han Chinese population. METHODS We genotyped 36 single-nucleotide polymorphisms (SNPs) using Illumina GoldenGate assays on a BeadStation 500G Genotyping System in 528 paranoid SZ patients and 528 healthy controls. Psychopathology was rated by the Positive and Negative Symptom Scale. RESULTS Significant associations were found in genotype and allele frequencies for SNPs rs10815017 (p = 0.002, 0.030, respectively) and rs2026828 (p = 0.020, 0.005, respectively) between SZ and healthy controls. There were significant associations in genotype frequency at rs6476875 (p = 0.020) and rs7024664 (p = 0.021) and allele frequency at rs3780412 (p = 0.026) and rs10974573 (p = 0.047) between SZ and healthy controls. Meanwhile, significant differences were found in genotype frequency at rs10815017 (p = 0.015), rs2026828 (p = 0.011), and rs3780411 (p = 0.040) in males, and rs7021569 in females (p = 0.020) between cases and controls when subdivided by gender. Also, significant differences were found in allele frequency at rs2026828 (p = 0.003), and rs7021569 (p = 0.045) in males, and rs10974619 in females (p = 0.044). However, those associations disappeared after Bonferroni's correction (p's > 0.05). Significant associations were found in the frequencies of four haplotypes (AA, CA, AGA, and GG) between SZ and healthy controls (χ 2 = 3.974, 7.433, 4.699, 4.526, p = 0.046, 0.006, 0.030, 0.033, respectively). There were significant associations between rs7032326 genotypes and PANSS total, positive symptoms, negative symptoms, and general psychopathology in SZ (p = 0.002, 0.011, 0.028, 0.008, respectively). CONCLUSION The present study provides further evidence that SLC1A1 may be not a susceptibility gene for SZ. However, the genetic variations of SLC1A1 may affect psychopathology symptoms.
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Affiliation(s)
- Wenqiang Li
- Department of Mental Health, The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of Henan, Xinxiang Medical University, Xinxiang, China
| | - Xi Su
- Department of Mental Health, The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of Henan, Xinxiang Medical University, Xinxiang, China
| | - Tengfei Chen
- Department of Mental Health, The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of Henan, Xinxiang Medical University, Xinxiang, China
| | - Zhen Li
- Department of Mental Health, The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of Henan, Xinxiang Medical University, Xinxiang, China
| | - Yongfeng Yang
- Department of Mental Health, The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of Henan, Xinxiang Medical University, Xinxiang, China
| | - Luwen Zhang
- Department of Mental Health, The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of Henan, Xinxiang Medical University, Xinxiang, China
| | - Qing Liu
- Department of Mental Health, The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of Henan, Xinxiang Medical University, Xinxiang, China
| | - Minglong Shao
- Department of Mental Health, The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of Henan, Xinxiang Medical University, Xinxiang, China
| | - Yan Zhang
- Department of Mental Health, The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of Henan, Xinxiang Medical University, Xinxiang, China
| | - Minli Ding
- Department of Mental Health, The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China
| | - Yanli Lu
- Department of Mental Health, The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China
| | - Hongyan Yu
- Department of Mental Health, The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China
| | - Xiaoduo Fan
- Department of Psychiatry, University of Massachusetts Medical School/UMass Memorial Medical Center, Worcester, MA, United States
| | - Meng Song
- Department of Mental Health, The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of Henan, Xinxiang Medical University, Xinxiang, China
| | - Luxian Lv
- Department of Mental Health, The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, International Joint Research Laboratory for Psychiatry and Neuroscience of Henan, Xinxiang Medical University, Xinxiang, China
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9
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Escobar AP, Wendland JR, Chávez AE, Moya PR. The Neuronal Glutamate Transporter EAAT3 in Obsessive-Compulsive Disorder. Front Pharmacol 2019; 10:1362. [PMID: 31803055 PMCID: PMC6872633 DOI: 10.3389/fphar.2019.01362] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 10/28/2019] [Indexed: 01/03/2023] Open
Abstract
Obsessive compulsive disorder (OCD) is a heterogeneous psychiatric disorder affecting 1%–3% of the population worldwide. About half of OCD afflicted individuals do not respond to currently available pharmacotherapy, which is mainly based on serotonin reuptake inhibition. Therefore, there is a critical need to search novel and improved therapeutic targets to treat this devastating disorder. In recent years, accumulating evidence has supported the glutamatergic hypothesis of OCD, and particularly pointing a potential role for the neuronal glutamate transporter EAAT3. This mini-review summarizes recent findings regarding the neurobiological basis of OCD, with an emphasis on the glutamatergic neurotransmission and EAAT3 as a key player in OCD etiology.
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Affiliation(s)
- Angélica P Escobar
- Centro Interdisciplinario de Neurociencia de Valparaíso CINV, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - Jens R Wendland
- Centro Interdisciplinario de Neurociencia de Valparaíso CINV, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - Andrés E Chávez
- Centro Interdisciplinario de Neurociencia de Valparaíso CINV, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - Pablo R Moya
- Centro Interdisciplinario de Neurociencia de Valparaíso CINV, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile.,Instituto de Fisiología, Facultad de Ciencias, Universidad de Valparaíso, Valparaiso, Chile
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10
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Abstract
Background/aim This study aimed to comparatively analyze the expression levels of the SLC1A1 gene in renal specimens from tumors and adjacent healthy kidney tissues of patients with clear cell renal cell carcinoma (ccRCC). Material and methods Nineteen patients diagnosed with ccRCC were included in the study. The expression levels of the SLC1A1 and GAPDH genes were measured in tumor and formalin-fixed paraffin-embedded (FFPE) tissue specimens from the adjacent healthy kidney of each subject. Via the GEPIA database, the distribution of SLC1A1 gene expressions in ccRCC and healthy kidney tissues was obtained. The relative expression of SLC1A1 was evaluated for the association with the clinical parameters of the patients. Results The expression of the SLC1A1 gene was significantly higher in males than females (P = 0.029). Also, there were statistically significant associations between stages II–IV and Fuhrman grades 2–4 with respect to SLC1A1 gene expression (P < 0.001 for both). Moreover, low levels of red blood cell and hemoglobin counts were significantly associated with the SLC1A1 expression (P < 0.001 and P = 0.005, respectively). The expression of the SLC1A1 gene in tumor tissues increased approximately 3 times compared with normal kidney tissues (P < 0.05). According to the GEPIA database, SLC1A1 gene expression is significantly higher in ccRCC patients than healthy persons (P = 0.01). Conclusion The change in the expression of SLC1A1 may be crucial for ccRCC pathophysiology.
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Affiliation(s)
- Sercan ERGÜN
- Ulubey Vocational Higher School, Ordu University, OrduTurkey
- * To whom correspondence should be addressed. E-mail:
| | - Sezgin GÜNEŞ
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayıs University, SamsunTurkey
| | - Recep BÜYÜKALPELLİ
- Department of Urology, Faculty of Medicine, Ondokuz Mayıs University, SamsunTurkey
| | - Oğuz AYDIN
- Department of Pathology, Faculty of Medicine, Ondokuz Mayıs University, SamsunTurkey
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11
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Potenza N, Mosca N, Mondola P, Damiano S, Russo A, De Felice B. Human miR-26a-5p regulates the glutamate transporter SLC1A1 (EAAT3) expression. Relevance in multiple sclerosis. Biochim Biophys Acta Mol Basis Dis 2018; 1864:317-23. [PMID: 28962897 DOI: 10.1016/j.bbadis.2017.09.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 09/08/2017] [Accepted: 09/25/2017] [Indexed: 12/14/2022]
Abstract
Multiple sclerosis (MS) is an autoimmune disease of the central nervous system, characterized by chronic inflammation, demyelination and scarring as well as a broad spectrum of signs and symptoms. MicroRNA plays pivotal roles in cellular and developmental processes by regulating gene expression at the post-transcriptional level. Increasing evidence suggests the involvement of microRNAs in the pathogenesis of neurodegenerative diseases, including MS. We have already found that the expression of a specific miRNA, hsa-mir-26a-5p (miR-26a), changed during INF-β treatment in responder Relapsing-Remitting MS patients. Functional annotations of mir-26a targets revealed that a number of genes were implicated in Glutamate Receptor Signaling pathway, which is notoriously altered in neurodegenerative diseases as MS. In this study, the different potential targets were subjected to a validation test based on luciferase reporter constructs transfected in an oligodendroglial cell line. In this functional screening, miR-26a was able to interact with SLC1A1 3' UTR suppressing the reporter activity. Transfection of a miR-26a mimic was then shown to decrease the endogenous SLC1A1 mRNA. Afterward, we have evaluated in blood platelets from interferon-β treated Multiple Sclerosis patients the expression of miR-26a and SLC1A1, finding not only their converse expression, but also a responsiveness to interferon-β therapy. Overall, these data suggest that mir-26a and SLC1A1 may play a role in the MS pathogenesis, and may be potential targets for the development of new biomarkers and/or therapeutic tools.
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12
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González LF, Henríquez-Belmar F, Delgado-Acevedo C, Cisternas-Olmedo M, Arriagada G, Sotomayor-Zárate R, Murphy DL, Moya PR. Neurochemical and behavioral characterization of neuronal glutamate transporter EAAT3 heterozygous mice. Biol Res 2017; 50:29. [PMID: 28927446 PMCID: PMC5605982 DOI: 10.1186/s40659-017-0138-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 09/11/2017] [Indexed: 12/23/2022] Open
Abstract
Background Obsessive–compulsive disorder (OCD) is a severe neuropsychiatric condition affecting 1–3% of the worldwide population. OCD has a strong genetic component, and the SLC1A1 gene that encodes neuronal glutamate transporter EAAT3 is a strong candidate for this disorder. To evaluate the impact of reduced EAAT3 expression in vivo, we studied male EAAT3 heterozygous and wild-type littermate mice using a battery of behavioral paradigms relevant to anxiety (open field test, elevated plus maze) and compulsivity (marble burying), as well as locomotor activity induced by amphetamine. Using high-performance liquid chromatography, we also determined tissue neurotransmitter levels in cortex, striatum and thalamus—brain areas that are relevant to OCD. Results Compared to wild-type littermates, EAAT3 heterozygous male mice have unaltered baseline anxiety-like, compulsive-like behavior and locomotor activity. Administration of acute amphetamine (5 mg/kg intraperitoneally) increased locomotion with no differences across genotypes. Tissue levels of glutamate, GABA, dopamine and serotonin did not vary between EAAT3 heterozygous and wild-type mice. Conclusions Our results indicate that reduced EAAT3 expression does not impact neurotransmitter content in the corticostriatal circuit nor alter anxiety or compulsive-like behaviors. Electronic supplementary material The online version of this article (doi:10.1186/s40659-017-0138-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Luis F González
- Laboratorio de Neuroquímica y Neurofarmacología, Centro de Neurobiología y Plasticidad Cerebral, Instituto de Fisiología, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile.,Laboratorio de Neurogenética, Centro de Neurobiología y Plasticidad Cerebral, Instituto de Fisiología, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - Francisca Henríquez-Belmar
- Laboratorio de Neurogenética, Centro de Neurobiología y Plasticidad Cerebral, Instituto de Fisiología, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile.,Núcleo Milenio Nu-MIND Biology of Neuropsychiatric Disorders, Valparaíso, Chile
| | - Claudia Delgado-Acevedo
- Laboratorio de Neurogenética, Centro de Neurobiología y Plasticidad Cerebral, Instituto de Fisiología, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile.,Núcleo Milenio Nu-MIND Biology of Neuropsychiatric Disorders, Valparaíso, Chile
| | - Marisol Cisternas-Olmedo
- Laboratorio de Neurogenética, Centro de Neurobiología y Plasticidad Cerebral, Instituto de Fisiología, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile.,Núcleo Milenio Nu-MIND Biology of Neuropsychiatric Disorders, Valparaíso, Chile
| | - Gloria Arriagada
- Departamento de Ciencias Biologicas, Facultad de Ciencias Biologicas, Universidad Andres Bello, Viña del Mar, Chile
| | - Ramón Sotomayor-Zárate
- Laboratorio de Neuroquímica y Neurofarmacología, Centro de Neurobiología y Plasticidad Cerebral, Instituto de Fisiología, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - Dennis L Murphy
- Laboratory of Clinical Science, National Institute of Mental Health, NIH, Bethesda, MD, 20892, USA
| | - Pablo R Moya
- Laboratorio de Neurogenética, Centro de Neurobiología y Plasticidad Cerebral, Instituto de Fisiología, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile. .,Núcleo Milenio Nu-MIND Biology of Neuropsychiatric Disorders, Valparaíso, Chile. .,Centro Interdisciplinario de Neurociencias de Valparaíso CINV, Valparaíso, Chile.
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13
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Ritter AC, Kammerer CM, Brooks MM, Conley YP, Wagner AK. Genetic variation in neuronal glutamate transport genes and associations with posttraumatic seizure. Epilepsia 2016; 57:984-93. [PMID: 27153812 PMCID: PMC4903934 DOI: 10.1111/epi.13397] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/04/2016] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Posttraumatic seizures (PTS) commonly occur following severe traumatic brain injury (sTBI). Risk factors for PTS have been identified, but variability in who develops PTS remains. Excitotoxicity may influence epileptogenesis following sTBI. Glutamate transporters manage glutamate levels and excitatory neurotransmission, and they have been associated with both epilepsy and TBI. Therefore, we aimed to determine if genetic variation in neuronal glutamate transporter genes is associated with accelerated epileptogenesis and increased PTS risk after sTBI. METHODS Individuals (N = 253) 18-75 years of age with sTBI were assessed for genetic relationships with PTS. Single nucleotide polymorphisms (SNPs) within SLC1A1 and SLC1A6 were assayed. Kaplan-Meier estimates and log-rank statistics were used to compare seizure rates from injury to 3 years postinjury for SNPs by genotype. Hazard ratios (HRs) were estimated using Cox proportional hazards regression for SNPs significant in Kaplan-Meier analyses adjusting for known PTS risk factors. RESULTS Thirty-two tagging SNPs were examined (SLC1A1: n = 28, SLC1A6: n = 4). Forty-nine subjects (19.37%) had PTS. Of these, 18 (36.7%) seized within 7 days, and 31 (63.3%) seized between 8 days and 3 years post-TBI. With correction for multiple comparisons, genotypes at SNP rs10974620 (SLC1A1) were significantly associated with time to first seizure across the full 3-year follow-up (seizure rates: 77.1% minor allele homozygotes, 24.8% heterozygotes, 16.6% major allele homozygotes; p = 0.001). When seizure follow-up began day 2 postinjury, genotypes at SNP rs7858819 (SLC1A1) were significantly associated with PTS risk (seizure rates: 52.7% minor allele homozygotes, 11.8% heterozygotes, 21.1% major allele homozygotes; p = 0.002). After adjusting for covariates, we found that rs10974620 remained significant (p = 0.017, minor allele versus major allele homozygotes HR 3.4, 95% confidence interval [CI] 1.3-9.3). rs7858819 also remained significant in adjusted models (p = 0.023, minor allele versus major allele homozygotes HR 3.4, 95%CI 1.1-10.5). SIGNIFICANCE Variations within SLC1A1 are associated with risk of epileptogenesis following sTBI. Future studies need to confirm findings, but variation within neuronal glutamate transporter genes may represent a possible pharmaceutical target for PTS prevention and treatment.
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Affiliation(s)
- Anne C Ritter
- Department of Epidemiology, University of Pittsburgh, Pittsburgh, PA
- Physical Medicine & Rehabilitation, University of Pittsburgh, Pittsburgh, PA
| | | | - Maria M Brooks
- Department of Epidemiology, University of Pittsburgh, Pittsburgh, PA
| | - Yvette P Conley
- Department of Health Promotion and Human Genetics, University of Pittsburgh, Pittsburgh, PA
- Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA
| | - Amy K Wagner
- Physical Medicine & Rehabilitation, University of Pittsburgh, Pittsburgh, PA
- Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA
- Department of Neuroscience, University of Pittsburgh, Pittsburgh, PA
- Center for Neuroscience at University of Pittsburgh, Pittsburgh, PA
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14
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Nishisako M, Meguro A, Nomura E, Yamane T, Takeuchi M, Ota M, Kashiwagi K, Mabuchi F, Iijima H, Kawase K, Yamamoto T, Nakamura M, Negi A, Sagara T, Nishida T, Inatani M, Tanihara H, Aihara M, Araie M, Fukuchi T, Abe H, Higashide T, Sugiyama K, Kanamoto T, Kiuchi Y, Iwase A, Chin S, Ohno S, Inoko H, Mizuki N. SLC1A1 Gene Variants and Normal Tension Glaucoma: An Association Study. Ophthalmic Genet 2016; 37:194-200. [PMID: 26771863 DOI: 10.3109/13816810.2015.1028649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND It has been hypothesized that dysfunction of the solute carrier family 1, member1 gene (SLC1A1), which encodes the glutamate aspartate transporter, may play a role in normal tension glaucoma. In this study we investigate whether SLC1A1 is associated with normal tension glaucoma in Japanese patients. METHODS A total of 292 Japanese patients with normal tension glaucoma and 500 healthy control subjects were recruited. We genotyped 12 single-nucleotide polymorphisms in SLC1A1. We also performed an imputation analysis to evaluate the potential association of un-genotyped SLC1A1 single-nucleotide polymorphisms, and 165 single-nucleotide polymorphisms were imputed. RESULTS We observed an increased frequency of the G allele of rs10739062 in patients compared to controls (p = 0.043, OR = 1.25). The rs10739062 polymorphism exhibited a dominant effect: individuals with genotype GG and GC showed a 1.91-fold increase in risk compared to genotype CC (p = 0.0082). However, the statistical significance disappeared after Bonferroni correction for multiple testing (pc > 0.05). We did not find any significant association between any of the remaining 176 single-nucleotide polymorphisms and disease risk. CONCLUSIONS Our study showed a lack of association between SLC1A1 variants and normal tension glaucoma in Japanese patients, suggesting that the SLC1A1 gene does not play a critical role in the development of the disorder in this patient population. However, further genetic studies with larger sample sizes are needed to clarify whether SLC1A1 may make some contribution that affects the risk of developing normal tension glaucoma.
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Affiliation(s)
- Mami Nishisako
- a Department of Ophthalmology , Yokohama City University School of Medicine , Yokohama , Kanagawa , Japan
| | - Akira Meguro
- a Department of Ophthalmology , Yokohama City University School of Medicine , Yokohama , Kanagawa , Japan
| | - Eiichi Nomura
- a Department of Ophthalmology , Yokohama City University School of Medicine , Yokohama , Kanagawa , Japan
| | - Takahiro Yamane
- a Department of Ophthalmology , Yokohama City University School of Medicine , Yokohama , Kanagawa , Japan
| | - Masaki Takeuchi
- a Department of Ophthalmology , Yokohama City University School of Medicine , Yokohama , Kanagawa , Japan .,b Inflammatory Disease Section, National Human Genome Research Institute, National Institutes of Health , Bethesda , Maryland , USA
| | - Masao Ota
- c Department of Legal Medicine , Shinshu University School of Medicine , Nagano , Japan
| | - Kenji Kashiwagi
- d Department of Ophthalmology , University of Yamanashi, Faculty of Medicine , Yamanashi , Japan
| | - Fumihiko Mabuchi
- d Department of Ophthalmology , University of Yamanashi, Faculty of Medicine , Yamanashi , Japan
| | - Hiroyuki Iijima
- d Department of Ophthalmology , University of Yamanashi, Faculty of Medicine , Yamanashi , Japan
| | - Kazuhide Kawase
- e Department of Ophthalmology , Gifu University Graduate School of Medicine , Gifu , Japan
| | - Tetsuya Yamamoto
- e Department of Ophthalmology , Gifu University Graduate School of Medicine , Gifu , Japan
| | - Makoto Nakamura
- f Department of Surgery, Division of Ophthalmology , Kobe University Graduate School of Medicine , Kobe , Hyogo , Japan
| | - Akira Negi
- f Department of Surgery, Division of Ophthalmology , Kobe University Graduate School of Medicine , Kobe , Hyogo , Japan
| | - Takeshi Sagara
- g Department of Ophthalmology , Yamaguchi University School of Medicine , Ube , Yamaguchi , Japan
| | - Teruo Nishida
- g Department of Ophthalmology , Yamaguchi University School of Medicine , Ube , Yamaguchi , Japan
| | - Masaru Inatani
- h Department of Ophthalmology and Visual Science , Graduate School of Medical Sciences, Kumamoto University , Kumamoto , Japan .,i Department of Ophthalmology, Faculty of Medical Science , University of Fukui , Fukui , Japan
| | - Hidenobu Tanihara
- h Department of Ophthalmology and Visual Science , Graduate School of Medical Sciences, Kumamoto University , Kumamoto , Japan
| | - Makoto Aihara
- j Department of Ophthalmology , University of Tokyo School of Medicine , Tokyo , Japan
| | - Makoto Araie
- j Department of Ophthalmology , University of Tokyo School of Medicine , Tokyo , Japan
| | - Takeo Fukuchi
- k Division of Ophthalmology and Visual Science , Graduate School of Medical and Dental Sciences, Niigata University , Niigata , Japan
| | - Haruki Abe
- k Division of Ophthalmology and Visual Science , Graduate School of Medical and Dental Sciences, Niigata University , Niigata , Japan
| | - Tomomi Higashide
- l Department of Ophthalmology and Visual Science , Kanazawa University Graduate School of Medical Science , Kanazawa , Ishikawa , Japan
| | - Kazuhisa Sugiyama
- l Department of Ophthalmology and Visual Science , Kanazawa University Graduate School of Medical Science , Kanazawa , Ishikawa , Japan
| | - Takashi Kanamoto
- m Department of Ophthalmology and Visual Science , Graduate School of Biomedical Sciences, Hiroshima University , Hiroshima , Japan
| | - Yoshiaki Kiuchi
- m Department of Ophthalmology and Visual Science , Graduate School of Biomedical Sciences, Hiroshima University , Hiroshima , Japan
| | - Aiko Iwase
- n Department of Ophthalmology , Tajimi Municipal Hospital , Gifu , Japan
| | - Shinki Chin
- o Department of Ophthalmology , Hokkaido University Graduate School of Medicine , Sapporo , Hokkaido , Japan , and
| | - Shigeaki Ohno
- o Department of Ophthalmology , Hokkaido University Graduate School of Medicine , Sapporo , Hokkaido , Japan , and
| | - Hidetoshi Inoko
- p Department of Genetic Information, Division of Molecular Life Science , Tokai University School of Medicine , Sagamihara , Kanagawa , Japan
| | - Nobuhisa Mizuki
- a Department of Ophthalmology , Yokohama City University School of Medicine , Yokohama , Kanagawa , Japan
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15
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Abousaab A, Warsi J, Elvira B, Lang F. Caveolin-1 Sensitivity of Excitatory Amino Acid Transporters EAAT1, EAAT2, EAAT3, and EAAT4. J Membr Biol 2015; 249:239-49. [PMID: 26690923 DOI: 10.1007/s00232-015-9863-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 12/07/2015] [Indexed: 10/22/2022]
Abstract
Excitatory amino acid transporters EAAT1 (SLC1A3), EAAT2 (SLC1A2), EAAT3 (SLC1A1), and EAAT4 (SLC1A6) serve to clear L-glutamate from the synaptic cleft and are thus important for the limitation of neuronal excitation. EAAT3 has previously been shown to form complexes with caveolin-1, a major component of caveolae, which participate in the regulation of transport proteins. The present study explored the impact of caveolin-1 on electrogenic transport by excitatory amino acid transporter isoforms EAAT1-4. To this end cRNA encoding EAAT1, EAAT2, EAAT3, or EAAT4 was injected into Xenopus oocytes without or with additional injection of cRNA encoding caveolin-1. The L-glutamate (2 mM)-induced inward current (I Glu) was taken as a measure of glutamate transport. As a result, I Glu was observed in EAAT1-, EAAT2-, EAAT3-, or EAAT4-expressing oocytes but not in water-injected oocytes, and was significantly decreased by coexpression of caveolin-1. Caveolin-1 decreased significantly the maximal transport rate. Treatment of EAATs-expressing oocytes with brefeldin A (5 µM) was followed by a decrease in conductance, which was similar in oocytes expressing EAAT together with caveolin-1 as in oocytes expressing EAAT1-4 alone. Thus, caveolin-1 apparently does not accelerate transporter protein retrieval from the cell membrane. In conclusion, caveolin-1 is a powerful negative regulator of the excitatory glutamate transporters EAAT1, EAAT2, EAAT3, and EAAT4.
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Affiliation(s)
- Abeer Abousaab
- Department of Physiology I, University of Tübingen, Gmelinstr. 5, 72076, Tübingen, Germany
| | - Jamshed Warsi
- Department of Physiology I, University of Tübingen, Gmelinstr. 5, 72076, Tübingen, Germany
| | - Bernat Elvira
- Department of Physiology I, University of Tübingen, Gmelinstr. 5, 72076, Tübingen, Germany
| | - Florian Lang
- Department of Physiology I, University of Tübingen, Gmelinstr. 5, 72076, Tübingen, Germany.
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16
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Zhang J, Sheerin C, Mandel H, Banducci AN, Myrick H, Acierno R, Amstadter AB, Wang Z. Variation in SLC1A1 is related to combat-related posttraumatic stress disorder. J Anxiety Disord 2014; 28:902-7. [PMID: 25445080 DOI: 10.1016/j.janxdis.2014.09.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 09/17/2014] [Indexed: 10/24/2022]
Abstract
Candidate gene studies have yet to investigate the glutamate system, the primary excitatory neurotransmitter of the HPA-axis related to PTSD risk. We investigated 13 SNPs in the glutamate transporter gene (SLC1A1) in relation to PTSD among combat-exposed veterans. Participants (n=418) completed a diagnostic interview and provided a blood sample for DNA isolation and genotyping. A subset of participants (n=391) had severity and combat exposure data available. In the primary logistic regression gender and rs10739062 were significant predictors of PTSD diagnosis (OR=0.50; OR=1.43). In the linear regression analysis, combat exposure was the only significant predictor (β=0.16) of severity. A computed genetic risk sum score was significant in relation to PTSD diagnosis (OR=1.15) and severity scores (β=0.14) above and beyond the effects of combat exposure. This study provides preliminary support for the relationship of glutamate transporter polymorphisms to PTSD risk and the need for further genetic studies within this system.
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Affiliation(s)
- Jingmei Zhang
- Department of Psychiatry, Medical University of South Carolina, Charleston, SC, USA
| | | | - Howard Mandel
- Ralph H. Johnson VA Medical Center, Charleston, SC, USA
| | - Anne N Banducci
- Center for Addictions, Personality, and Emotion Research, University of Maryland, College Park, MD, USA
| | - Hugh Myrick
- Department of Psychiatry, Medical University of South Carolina, Charleston, SC, USA; Ralph H. Johnson VA Medical Center, Charleston, SC, USA
| | - Ronald Acierno
- Department of Psychiatry, Medical University of South Carolina, Charleston, SC, USA; Ralph H. Johnson VA Medical Center, Charleston, SC, USA
| | - Ananda B Amstadter
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, VA, USA
| | - Zhewu Wang
- Department of Psychiatry, Medical University of South Carolina, Charleston, SC, USA; Ralph H. Johnson VA Medical Center, Charleston, SC, USA.
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17
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Costain G, Lionel AC, Fu F, Stavropoulos DJ, Gazzellone MJ, Marshall CR, Scherer SW, Bassett AS. Adult neuropsychiatric expression and familial segregation of 2q13 duplications. Am J Med Genet B Neuropsychiatr Genet 2014; 165B:337-44. [PMID: 24807792 PMCID: PMC4464821 DOI: 10.1002/ajmg.b.32236] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Accepted: 04/14/2014] [Indexed: 02/05/2023]
Abstract
New genomic disorders associated with large, rare, recurrent copy number variations (CNVs) are being discovered at a rapid pace. Detailed phenotyping and family studies are rare, however, as are data on adult phenotypic expression. Duplications at 2q13 were recently identified as risk factors for developmental delay/autism and reported in the prenatal setting, yet few individuals (all children) have been extensively phenotyped. During a genome-wide CNV study of schizophrenia, we identified two unrelated probands with 2q13 duplications. In this study, detailed phenotyping and genotyping using high-resolution microarrays was performed for 12 individuals across their two families. 2q13 duplications were present in six adults, and co-segregated with clinically significant later-onset neuropsychiatric disorders. Convergent lines of evidence implicated GABAminergic dysfunction. Analysis of the genic content revealed promising candidates for neuropsychiatric disease, including BCL2L11, ANAPC1, and MERTK. Intrafamilial genetic heterogeneity and "second hits" in one family may have been the consequence of assortative mating. Clinical genetic testing for the 2q13 duplication and the associated genetic counseling was well received. In summary, large rare 2q13 duplications appear to be associated with variable adult neuropsychiatric and other expression. The findings represent progress toward clinical translation of research results in schizophrenia. There are implications for other emerging genomic disorders where there is interest in lifelong expression.
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Affiliation(s)
- Gregory Costain
- Clinical Genetics Research Program, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - Anath C. Lionel
- The Centre for Applied Genomics and Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Molecular Genetics and McLaughlin Centre, University of Toronto, Toronto, Ontario, Canada
| | - Fiona Fu
- Clinical Genetics Research Program, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - Dimitri J. Stavropoulos
- Department of Pediatric Laboratory Medicine, Cytogenetics Laboratory, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Matthew J. Gazzellone
- The Centre for Applied Genomics and Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Molecular Genetics and McLaughlin Centre, University of Toronto, Toronto, Ontario, Canada
| | - Christian R. Marshall
- The Centre for Applied Genomics and Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Molecular Genetics and McLaughlin Centre, University of Toronto, Toronto, Ontario, Canada
| | - Stephen W. Scherer
- The Centre for Applied Genomics and Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Molecular Genetics and McLaughlin Centre, University of Toronto, Toronto, Ontario, Canada
| | - Anne S. Bassett
- Clinical Genetics Research Program, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
- Department of Psychiatry, University Health Network, Toronto, Ontario, Canada
- Division of Cardiology, Department of Medicine, University Health Network, Toronto, Ontario, Canada
- Correspondence to: Anne S. Bassett, MD, FRCPC, Centre for Addiction and Mental Health, 33 Russell Street, Room 1100, Toronto, Ontario, Canada M5S 2S1.
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Lu W, Wu H, Cai J, Wang Z, Yi Z, Yu S, Fang Y, Zhang C. Lack of association of SLC1A1 variants with schizophrenia in Chinese Han population. Psychiatry Res 2013; 210:669-71. [PMID: 23931931 DOI: 10.1016/j.psychres.2013.07.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Revised: 07/04/2013] [Accepted: 07/08/2013] [Indexed: 12/27/2022]
Abstract
In this study, we analyzed four single nucleotide polymorphisms (SNPs) (rs10491734, rs2228622, rs301430 and rs301443) of the solute carrier family 1 gene (SLC1A1) in a set of 616 schizophrenia patients and 638 matched healthy controls of Han Chinese descent. No significant differences of genotype or allele distribution were identified between the patients and controls. Our data suggest that SLC1A1 is unlikely to be a major susceptibility gene for schizophrenia in Han Chinese.
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Affiliation(s)
- Weihong Lu
- Schizophrenia Program, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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19
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Martínez-Pacheco M, Hidalgo-Miranda A, Romero-Córdoba S, Valverde M, Rojas E. MRNA and miRNA expression patterns associated to pathways linked to metal mixture health effects. Gene 2013; 533:508-14. [PMID: 24080485 DOI: 10.1016/j.gene.2013.09.049] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Accepted: 09/13/2013] [Indexed: 12/31/2022]
Abstract
Metals are a threat to human health by increasing disease risk. Experimental data have linked altered miRNA expression with exposure to some metals. MiRNAs comprise a large family of non-coding single-stranded molecules that primarily function to negatively regulate gene expression post-transcriptionally. Although several human populations are exposed to low concentrations of As, Cd and Pb as a mixture, most toxicology research focuses on the individual effects that these metals exert. Thus, this study aims to evaluate global miRNA and mRNA expression changes induced by a metal mixture containing NaAsO2, CdCl2, Pb(C2H3O2)2·3H2O and to predict possible metal-associated disease development under these conditions. Our results show that this metal mixture results in a miRNA expression profile that may be responsible for the mRNA expression changes observed under experimental conditions in which coding proteins are involved in cellular processes, including cell death, growth and proliferation related to the metal-associated inflammatory response and cancer.
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Affiliation(s)
- M Martínez-Pacheco
- Universidad Nacional Autónoma de México, Instituto de Investigaciones Biomédicas, Departamento de Medicina Genómica y Toxicología Ambiental, C.U., 04510 México, México
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20
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Schirmbeck F, Zink M. Comorbid obsessive-compulsive symptoms in schizophrenia: contributions of pharmacological and genetic factors. Front Pharmacol 2013; 4:99. [PMID: 23950745 PMCID: PMC3738863 DOI: 10.3389/fphar.2013.00099] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 07/22/2013] [Indexed: 12/17/2022] Open
Abstract
A large subgroup of around 25% of schizophrenia patients suffers from obsessive-compulsive symptoms (OCS) and about 12% fulfill the diagnostic criteria of an obsessive-compulsive disorder (OCD). The additional occurrence of OCS is associated with high subjective burden of disease, additional neurocognitive impairment, poorer social and vocational functioning, greater service utilization and high levels of anxiety and depression. Comorbid patients can be assigned to heterogeneous subgroups. One hypothesis assumes that second generation antipsychotics (SGAs), most importantly clozapine, might aggravate or even induce second-onset OCS. Several arguments support this assumption, most importantly the observed chronological order of first psychotic manifestation, start of treatment with clozapine and onset of OCS. In addition, correlations between OCS-severity and dose and serum levels and duration of clozapine treatment hint toward a dose-dependent side effect. It has been hypothesized that genetic risk-factors dispose patients with schizophrenia to develop OCS. One study in a South Korean sample reported associations with polymorphisms in the gene SLC1A1 (solute carrier family 1A1) and SGA-induced OCS. However, this finding could not be replicated in European patients. Preliminary results also suggest an involvement of polymorphisms in the BDNF gene (brain-derived neurotrophic factor) and an interaction between markers of SLC1A1 and the gene DLGAP3 (disc large associated protein 3) as well as GRIN2B (N-methyl-D-aspartate receptor subunit 2B). Further research of well-defined samples, in particular studies investigating possible interactions of genetic risk-constellations and pharmacodynamic properties, are needed to clarify the assumed development of SGA-induced OCS. Results might improve pathogenic concepts and facilitate the definition of at risk populations, early detection and monitoring of OCS as well as multimodal therapeutic interventions.
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Affiliation(s)
- Frederike Schirmbeck
- Central Institute of Mental Health, Department of Psychiatry and Psychotherapy, Faculty Medicine Mannheim, Heidelberg University Mannheim, Germany
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