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Carabaño M, Liu T, Liu A, Lee JC, Cheng L, Wang LJ, Huang CK, Lu S. Association of HLA-A, B, and C alleles and cancer susceptibility in 179 solid malignancies. Am J Transl Res 2023; 15:5642-5652. [PMID: 37854217 PMCID: PMC10579009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 09/04/2023] [Indexed: 10/20/2023]
Abstract
BACKGROUND The major histocompatibility complex (MHC) genes are known to be capable of influencing the susceptibility of many cancers. All mammalian cells, including cancer cells, express MHC class I molecules consisting of human leukocyte antigens (HLA) A, B, and C. The tumor susceptibility of HLA-A, B, and C alleles has not been studied extensively in solid tumors. METHODS HLA-A, B, and C genotypes of 179 solid tumors were collected from Caris Comprehensive Tumor Profiling reports, including 45 GU, 44 GI, 28 pancreaticobiliary, 21 thoracic, 15 breast, 13 Gyn, among others. The tumors were mainly from Caucasians (82%). The HLA allele frequencies in the tumors were compared to those of respective ethnic populations in the US National Marrow Donor Program (NMDP) database. Fisher's exact tests were performed, adjusted P values were calculated using Benjamini-Hochberg's method for false discovery rate (FDR), and Prevalence ratios (PRs) were calculated to quantify associations. RESULTS Twenty-one alleles were not listed in the NMDP. Among them, A*11:303 alone was present in 11 carcinomas, and B*08:222 was seen in 4 tumors. Among the alleles listed in the NMDP, C*08:02, B*14:02, A*03:02, and B*44:06 were significantly associated with tumors in Caucasian Americans (PR: 2.50-170), while B*44:02 appeared protective (PR: 0.36). Alleles with less significant associations were listed. CONCLUSIONS From the HLA-A, B, and C data of the 179 tumors, we identified several susceptible alleles and one protective allele. Of interest, 21 alleles were not listed in the NMDP. The limited cases prevented our analysis from identifying cancer-susceptible alleles in other races.
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Affiliation(s)
- Miguel Carabaño
- Department of Pathology and Laboratory Medicine, Alpert Medical School of Brown UniversityProvidence, RI 02903, USA
| | - Tao Liu
- Department of Biostatistics, Brown UniversityProvidence, RI 02912, USA
| | - Abraham Liu
- Department of Biostatistics, Brown UniversityProvidence, RI 02912, USA
| | - Jim ChunHao Lee
- Department of Pathology and Laboratory Medicine, Alpert Medical School of Brown UniversityProvidence, RI 02903, USA
| | - Liang Cheng
- Department of Pathology and Laboratory Medicine, Alpert Medical School of Brown UniversityProvidence, RI 02903, USA
| | - Li-Juan Wang
- Department of Pathology and Laboratory Medicine, Alpert Medical School of Brown UniversityProvidence, RI 02903, USA
| | - Chiung-Kuei Huang
- Department of Pathology and Laboratory Medicine, Tulane University School of MedicineNew Orleans, LA 70112, USA
| | - Shaolei Lu
- Department of Pathology and Laboratory Medicine, Alpert Medical School of Brown UniversityProvidence, RI 02903, USA
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Ortiz GG, Torres-Mendoza BMG, Ramírez-Jirano J, Marquez-Pedroza J, Hernández-Cruz JJ, Mireles-Ramirez MA, Torres-Sánchez ED. Genetic Basis of Inflammatory Demyelinating Diseases of the Central Nervous System: Multiple Sclerosis and Neuromyelitis Optica Spectrum. Genes (Basel) 2023; 14:1319. [PMID: 37510224 PMCID: PMC10379341 DOI: 10.3390/genes14071319] [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: 05/10/2023] [Revised: 06/15/2023] [Accepted: 06/20/2023] [Indexed: 07/30/2023] Open
Abstract
Demyelinating diseases alter myelin or the coating surrounding most nerve fibers in the central and peripheral nervous systems. The grouping of human central nervous system demyelinating disorders today includes multiple sclerosis (MS) and neuromyelitis optica spectrum disorders (NMOSD) as distinct disease categories. Each disease is caused by a complex combination of genetic and environmental variables, many involving an autoimmune response. Even though these conditions are fundamentally similar, research into genetic factors, their unique clinical manifestations, and lesion pathology has helped with differential diagnosis and disease pathogenesis knowledge. This review aims to synthesize the genetic approaches that explain the differential susceptibility between these diseases, explore the overlapping clinical features, and pathological findings, discuss existing and emerging hypotheses on the etiology of demyelination, and assess recent pathogenicity studies and their implications for human demyelination. This review presents critical information from previous studies on the disease, which asks several questions to understand the gaps in research in this field.
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Affiliation(s)
- Genaro Gabriel Ortiz
- Department of Philosophical and Methodological Disciplines and Service of Molecular Biology in Medicine Hospital, Civil University Health Sciences Center, University of Guadalajara, Guadalajara 44340, Jalisco, Mexico
- Department of Neurology, High Specialty Medical Unit, Western National Medical Center of the Mexican Institute of Social Security, Guadalajara 44329, Jalisco, Mexico
| | - Blanca M G Torres-Mendoza
- Department of Philosophical and Methodological Disciplines and Service of Molecular Biology in Medicine Hospital, Civil University Health Sciences Center, University of Guadalajara, Guadalajara 44340, Jalisco, Mexico
- Neurosciences Division, Western Biomedical Research Center, Mexican Social Security Institute (Instituto Mexicano del Seguro Social, IMSS), Guadalajara 44340, Jalisco, Mexico
| | - Javier Ramírez-Jirano
- Neurosciences Division, Western Biomedical Research Center, Mexican Social Security Institute (Instituto Mexicano del Seguro Social, IMSS), Guadalajara 44340, Jalisco, Mexico
| | - Jazmin Marquez-Pedroza
- Neurosciences Division, Western Biomedical Research Center, Mexican Social Security Institute (Instituto Mexicano del Seguro Social, IMSS), Guadalajara 44340, Jalisco, Mexico
- Coordination of Academic Activities, Western Biomedical Research Center, Mexican Social Security Institute (Instituto Mexicano del Seguro Social, IMSS), Guadalajara 44340, Jalisco, Mexico
| | - José J Hernández-Cruz
- Department of Neurology, High Specialty Medical Unit, Western National Medical Center of the Mexican Institute of Social Security, Guadalajara 44329, Jalisco, Mexico
| | - Mario A Mireles-Ramirez
- Department of Neurology, High Specialty Medical Unit, Western National Medical Center of the Mexican Institute of Social Security, Guadalajara 44329, Jalisco, Mexico
| | - Erandis D Torres-Sánchez
- Department of Medical and Life Sciences, University Center of la Cienega, University of Guadalajara, Ocotlan 47820, Jalisco, Mexico
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Fashina IA, McCoy CE, Furney SJ. In silico prioritisation of microRNA-associated common variants in multiple sclerosis. Hum Genomics 2023; 17:31. [PMID: 36991503 PMCID: PMC10061723 DOI: 10.1186/s40246-023-00478-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 03/16/2023] [Indexed: 03/31/2023] Open
Abstract
BACKGROUND Genome-wide association studies (GWAS) have highlighted over 200 autosomal variants associated with multiple sclerosis (MS). However, variants in non-coding regions such as those encoding microRNAs have not been explored thoroughly, despite strong evidence of microRNA dysregulation in MS patients and model organisms. This study explores the effect of microRNA-associated variants in MS, through the largest publicly available GWAS, which involved 47,429 MS cases and 68,374 controls. METHODS We identified SNPs within the coordinates of microRNAs, ± 5-kb microRNA flanking regions and predicted 3'UTR target-binding sites using miRBase v22, TargetScan 7.0 RNA22 v2.0 and dbSNP v151. We established the subset of microRNA-associated SNPs which were tested in the summary statistics of the largest MS GWAS by intersecting these datasets. Next, we prioritised those microRNA-associated SNPs which are among known MS susceptibility SNPs, are in strong linkage disequilibrium with the former or meet a microRNA-specific Bonferroni-corrected threshold. Finally, we predicted the effects of those prioritised SNPs on their microRNAs and 3'UTR target-binding sites using TargetScan v7.0, miRVaS and ADmiRE. RESULTS We have identified 30 candidate microRNA-associated variants which meet at least one of our prioritisation criteria. Among these, we highlighted one microRNA variant rs1414273 (MIR548AC) and four 3'UTR microRNA-binding site variants within SLC2A4RG (rs6742), CD27 (rs1059501), MMEL1 (rs881640) and BCL2L13 (rs2587100). We determined changes to the predicted microRNA stability and binding site recognition of these microRNA and target sites. CONCLUSIONS We have systematically examined the functional, structural and regulatory effects of candidate MS variants among microRNAs and 3'UTR targets. This analysis allowed us to identify candidate microRNA-associated MS SNPs and highlights the value of prioritising non-coding RNA variation in GWAS. These candidate SNPs could influence microRNA regulation in MS patients. Our study is the first thorough investigation of both microRNA and 3'UTR target-binding site variation in multiple sclerosis using GWAS summary statistics.
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Affiliation(s)
- Ifeolutembi A. Fashina
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland
- SFI Centre for Research Training in Genomics Data Sciences, University of Galway, H91 TK33 Galway, Ireland
- FutureNeuro SFI Research Centre, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Claire E. McCoy
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Simon J. Furney
- Genomic Oncology Research Group, Department of Physiology & Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
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Saratov GA, Vladimirov VI, Novoselov AL, Ziganshin RH, Chen G, Baymukhametov TN, Konevega AL, Belogurov AA, Kudriaeva AA. Myelin Basic Protein Fragmentation by Engineered Human Proteasomes with Different Catalytic Phenotypes Revealed Direct Peptide Ligands of MS-Associated and Protective HLA Class I Molecules. Int J Mol Sci 2023; 24:ijms24032091. [PMID: 36768413 PMCID: PMC9917034 DOI: 10.3390/ijms24032091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/17/2023] [Accepted: 01/17/2023] [Indexed: 01/21/2023] Open
Abstract
Proteasomes exist in mammalian cells in multiple combinatorial variants due to the diverse regulatory particles and exchange of catalytic subunits. Here, using biotin carboxyl carrier domain of transcarboxylase from Propionibacterium shermanii fused with different proteasome subunits of catalytic and regulatory particles, we report comprehensive characterization of highly homogenous one-step purified human constitutive and immune 20S and 26S/30S proteasomes. Hydrolysis of a multiple sclerosis (MS) autoantigen, myelin basic protein (MBP), by engineered human proteasomes with different catalytic phenotypes, revealed that peptides which may be directly loaded on the HLA class I molecules are produced mainly by immunoproteasomes. We detected at least five MBP immunodominant core regions, namely, LPRHRDTGIL, SLPQKSHGR, QDENPVVHFF, KGRGLSLSRF and GYGGRASDY. All peptides, except QDENPVVHFF, which originates from the encephalitogenic MBP part, were associated with HLA I alleles considered to increase MS risk. Prediction of the affinity of HLA class I to this peptide demonstrated that MS-protective HLA-A*44 and -B*35 molecules are high-affinity binders, whereas MS-associated HLA-A*23, -A*24, -A*26 and -B*51 molecules tend to have moderate to low affinity. The HLA-A*44 molecules may bind QDENPVVHFF and its deamidated form in several registers with unprecedently high affinity, probably linking its distinct protective phenotype with thymic depletion of the repertoire of autoreactive cytotoxic T cells or induction of CD8+ regulatory T cells, specific to the encephalitogenic MBP peptide.
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Affiliation(s)
- George A. Saratov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
- Phystech School of Biological and Medical Physics, Moscow Institute of Physics and Technology (National Research University), 141701 Dolgoprudny, Russia
| | - Vasiliy I. Vladimirov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Alexey L. Novoselov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Rustam H. Ziganshin
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Guo Chen
- School of Biopharmacy, China Pharmaceutical University, Nanjing 211198, China
| | | | - Andrey L. Konevega
- National Research Center, “Kurchatov Institute”, 123182 Moscow, Russia
- Institute of Biomedical Systems and Biotechnologies, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia
- Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre, Kurchatov Institute, 188300 Gatchina, Russia
| | - Alexey A. Belogurov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
- Department of Biological Chemistry, Ministry of Health of Russian Federation, Evdokimov Moscow State University of Medicine and Dentistry, 127473 Moscow, Russia
- Correspondence: (A.A.B.J.); (A.A.K.); Tel.: +7-495-3352288 (A.A.B.J. & A.A.K.)
| | - Anna A. Kudriaeva
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
- Correspondence: (A.A.B.J.); (A.A.K.); Tel.: +7-495-3352288 (A.A.B.J. & A.A.K.)
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Genetics and familial distribution of multiple sclerosis: A review. Rev Neurol (Paris) 2022; 178:512-520. [DOI: 10.1016/j.neurol.2021.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/30/2021] [Accepted: 11/04/2021] [Indexed: 11/18/2022]
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The analysis of a subset of HLA region associations in type 1 diabetes and multiple sclerosis suggests the involvement mechanisms other than antigen presentation in the pathogenesis. INFORMATICS IN MEDICINE UNLOCKED 2022. [DOI: 10.1016/j.imu.2021.100831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Alves-Leon SV, Ferreira CDS, Herlinger AL, Fontes-Dantas FL, Rueda-Lopes FC, Francisco RDS, Gonçalves JPDC, de Araújo AD, Rêgo CCDS, Higa LM, Gerber AL, Guimarães APDC, de Menezes MT, de Paula Tôrres MC, Maia RA, Nogueira BMG, França LC, da Silva MM, Naurath C, Correia ASDS, Vasconcelos CCF, Tanuri A, Ferreira OC, Cardoso CC, Aguiar RS, de Vasconcelos ATR. Exome-Wide Search for Genes Associated With Central Nervous System Inflammatory Demyelinating Diseases Following CHIKV Infection: The Tip of the Iceberg. Front Genet 2021; 12:639364. [PMID: 33815474 PMCID: PMC8010313 DOI: 10.3389/fgene.2021.639364] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 02/08/2021] [Indexed: 12/31/2022] Open
Abstract
Chikungunya virus (CHIKV) is a re-emergent arbovirus that causes a disease characterized primarily by fever, rash and severe persistent polyarthralgia, although <1% of cases develop severe neurological manifestations such as inflammatory demyelinating diseases (IDD) of the central nervous system (CNS) like acute disseminated encephalomyelitis (ADEM) and extensive transverse myelitis. Genetic factors associated with host response and disease severity are still poorly understood. In this study, we performed whole-exome sequencing (WES) to identify HLA alleles, genes and cellular pathways associated with CNS IDD clinical phenotype outcomes following CHIKV infection. The cohort includes 345 patients of which 160 were confirmed for CHIKV. Six cases presented neurological manifestation mimetizing CNS IDD. WES data analysis was performed for 12 patients, including the CNS IDD cases and 6 CHIKV patients without any neurological manifestation. We identified 29 candidate genes harboring rare, pathogenic, or probably pathogenic variants in all exomes analyzed. HLA alleles were also determined and patients who developed CNS IDD shared a common signature with diseases such as Multiple sclerosis (MS) and Neuromyelitis Optica Spectrum Disorders (NMOSD). When these genes were included in Gene Ontology analyses, pathways associated with CNS IDD syndromes were retrieved, suggesting that CHIKV-induced CNS outcomesmay share a genetic background with other neurological disorders. To our knowledge, this study was the first genome-wide investigation of genetic risk factors for CNS phenotypes in CHIKV infection. Our data suggest that HLA-DRB1 alleles associated with demyelinating diseases may also confer risk of CNS IDD outcomes in patients with CHIKV infection.
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Affiliation(s)
- Soniza Vieira Alves-Leon
- Translational Neuroscience Laboratory, Rio de Janeiro State Federal University, Rio de Janeiro, Brazil
- Department of Neurology/Reference and Research Center for Multiple Sclerosis and Other Central Nervous System Idiopathic Demyelinating Inflammatory Diseases, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | | | | | | | - João Paulo da Costa Gonçalves
- Translational Neuroscience Laboratory, Rio de Janeiro State Federal University, Rio de Janeiro, Brazil
- Department of Neurology/Reference and Research Center for Multiple Sclerosis and Other Central Nervous System Idiopathic Demyelinating Inflammatory Diseases, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Amanda Dutra de Araújo
- Translational Neuroscience Laboratory, Rio de Janeiro State Federal University, Rio de Janeiro, Brazil
- Department of Neurology/Reference and Research Center for Multiple Sclerosis and Other Central Nervous System Idiopathic Demyelinating Inflammatory Diseases, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Cláudia Cecília da Silva Rêgo
- Translational Neuroscience Laboratory, Rio de Janeiro State Federal University, Rio de Janeiro, Brazil
- Department of Neurology/Reference and Research Center for Multiple Sclerosis and Other Central Nervous System Idiopathic Demyelinating Inflammatory Diseases, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Luiza Mendonça Higa
- Molecular Virology Laboratory, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | | | | | - Richard Araújo Maia
- Molecular Virology Laboratory, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Laise Carolina França
- Translational Neuroscience Laboratory, Rio de Janeiro State Federal University, Rio de Janeiro, Brazil
| | - Marcos Martins da Silva
- Department of Clinical Medicine, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Christian Naurath
- Federal Hospital Cardoso Fontes, Ministry of Health, Rio de Janeiro, Brazil
| | | | | | - Amilcar Tanuri
- Molecular Virology Laboratory, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Orlando Costa Ferreira
- Molecular Virology Laboratory, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Renato Santana Aguiar
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
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Misicka E, Sept C, Briggs FBS. Predicting onset of secondary-progressive multiple sclerosis using genetic and non-genetic factors. J Neurol 2020; 267:2328-2339. [PMID: 32333165 DOI: 10.1007/s00415-020-09850-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 04/15/2020] [Accepted: 04/17/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND Predicting the transition from relapsing-remitting (RR) to secondary-progressive (SP) multiple sclerosis (MS) from early in the disease course is challenging. OBJECTIVE To construct prediction models for SPMS using sociodemographic and self-reported clinical measures that would be available at/near MS onset, with specific considerations for MS genetic risk factors. METHODS We conducted a retrospective cross-sectional study based on 1295 white, non-Hispanic individuals. Cox proportional hazard prediction models were generated for three censored SPMS outcomes (ever transitioning, transitioning within 10 years, and transitioning within 20 years) using sociodemographic, comorbid health information, symptomatology, and other measures of early disease activity. HLADRB1*15:01 and HLA-A*02:01, as well as a genetic risk score, were iteratively considered in each model. We also explored the relationships for all 200 MS risk variants located outside the major histocompatibility complex. Nomograms were generated for the final prediction models. RESULTS An older age of MS onset and being male predicted a short latency to SPMS, while a longer interval between the first two relapses predicted a much longer latency. Comorbid conditions and onset symptomatology variably predicted the risk for transitioning to SPMS for each censored outcome. The most notable observation was that HLA-A*02:01, which confers decreased risk for MS, also contributed to decreased hazards for SPMS. CONCLUSIONS These results have the potential to advance prognostication for a person with MS using information available at or near onset, potentially improving care and quality of life for those who live with MS.
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Affiliation(s)
- Elina Misicka
- Neuroimmunological Disorders Gene-Environment Epidemiology Lab, Department of Population and Quantitative Health Sciences, School of Medicine, Case Western Reserve University, 2103 Cornell Rd, Cleveland, OH, 44106, USA
| | - Corriene Sept
- Neuroimmunological Disorders Gene-Environment Epidemiology Lab, Department of Population and Quantitative Health Sciences, School of Medicine, Case Western Reserve University, 2103 Cornell Rd, Cleveland, OH, 44106, USA
| | - Farren B S Briggs
- Neuroimmunological Disorders Gene-Environment Epidemiology Lab, Department of Population and Quantitative Health Sciences, School of Medicine, Case Western Reserve University, 2103 Cornell Rd, Cleveland, OH, 44106, USA.
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Kovacs AAZ, Kono N, Wang CH, Wang D, Frederick T, Operskalski E, Tien PC, French AL, Minkoff H, Kassaye S, T. Golub E, Aouizerat BE, Kuniholm MH, Millstein J. Association of HLA Genotype With T-Cell Activation in Human Immunodeficiency Virus (HIV) and HIV/Hepatitis C Virus-Coinfected Women. J Infect Dis 2020; 221:1156-1166. [PMID: 31802115 PMCID: PMC7325713 DOI: 10.1093/infdis/jiz589] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 11/06/2019] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Global immune activation and HLA alleles are each associated with the pathogenesis of human immunodeficiency virus (HIV) and hepatitis C virus . METHODS We evaluated the relationship between 44 HLA class I and 28 class II alleles and percentages of activated CD8 (CD8+CD38+DR+) and CD4 (CD4+CD38+DR+) T cells in 586 women who were naive to highly active antiretroviral therapy. We used linear generalized estimating equation regression models, adjusting for race/ethnicity, age, HIV load, and hepatitis C virus infection and controlling for multiplicity using a false discovery rate threshold of 0.10. RESULTS Ten HLA alleles were associated with CD8 and/or CD4 T-cell activation. Lower percentages of activated CD8 and/or CD4 T cells were associated with protective alleles B*57:03 (CD8 T cells, -6.6% [P = .002]; CD4 T cells, -2.7% [P = .007]), C*18:01 (CD8 T cells, -6.6%; P < .0008) and DRB1*13:01 (CD4 T cells, -2.7%; P < .0004), and higher percentages were found with B*18:01 (CD8 T cells, 6.2%; P < .0003), a detrimental allele. Other alleles/allele groups associated with activation included C*12:03, group DQA1*01:00, DQB1*03:01, DQB1*03:02, DQB1*06:02, and DQB1*06:03. CONCLUSION These findings suggest that a person's HLA type may play a role in modulating T-cell activation independent of viral load and sheds light on the relationship between HLA, T-cell activation, immune control, and HIV pathogenesis.
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Affiliation(s)
- Andrea A Z Kovacs
- Department of Pediatrics, Maternal, Child and Adolescent Center for Infectious Diseases and Virology, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Naoko Kono
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Chia-Hao Wang
- Department of Pediatrics, Maternal, Child and Adolescent Center for Infectious Diseases and Virology, Keck School of Medicine, University of Southern California, Los Angeles, California
- City of Hope National Medical Center, Duarte, California
| | - Daidong Wang
- Department of Pediatrics, Maternal, Child and Adolescent Center for Infectious Diseases and Virology, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Toni Frederick
- Department of Pediatrics, Maternal, Child and Adolescent Center for Infectious Diseases and Virology, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Eva Operskalski
- Department of Pediatrics, Maternal, Child and Adolescent Center for Infectious Diseases and Virology, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Phyllis C Tien
- Department of Medicine, University of California, San Francisco and Department of Veterans Affairs, San Francisco, California
| | - Audrey L French
- Department of Medicine, Stroger Hospital of Cook County/CORE Center, Rush Medical School, Chicago, Illinois
| | - Howard Minkoff
- Departments of Obstetrics and Gynecology Maimonides Medical Center and SUNY Downstate, Brooklyn, New York
| | - Seble Kassaye
- Department of Medicine, Georgetown University School of Medicine, Washington, DC
| | - Elizabeth T. Golub
- Johns Hopkins Bloomberg School of Public Health, Department of Epidemiology, Baltimore, Maryland
| | - Bradley E Aouizerat
- Bluestone Center for Clinical Research, New York University, New York, New York
- Department of Oral and Maxillofacial Surgery, New York University, New York, New York
| | - Mark H Kuniholm
- Department of Epidemiology and Biostatistics, University at Albany, State University of New York, Rensselaer, New York
| | - Joshua Millstein
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
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Abstract
OBJECTIVE In a previous pilot monocentric study, we investigated the relation between human leukocyte antigen (HLA) genotype and multiple sclerosis (MS) disease progression over 2 years. HLA-A*02 allele was correlated with better outcomes, whereas HLA-B*07 and HLA-B*44 were correlated with worse outcomes. The objective of this extension study was to further investigate the possible association of HLA genotype with disease status and progression in MS as measured by sensitive and complex clinical and imaging parameters. METHODS Hundred and forty-six MS patients underwent HLA typing. Over a 4-year period of follow-up, we performed three clinical and magnetic resonance imaging (MRI) assessments per patient, which respectively included Expanded Disability Status Scale, Multiple Sclerosis Severity Scale, Timed-25-Foot-Walk, 9-Hole Peg Test, Symbol Digit Modalities Test, Brief Visual Memory Test, California Verbal Learning Test-II, and whole-brain atrophy, fluid-attenuated inversion recovery (FLAIR) lesion volume change and number of new FLAIR lesions using icobrain. We then compared the clinical and MRI outcomes between predefined HLA patient groups. RESULTS Results of this larger study with a longer follow-up are in line with what we have previously shown. HLA-A*02 allele is associated with potentially better MS outcomes, whereas HLA-B*07, HLA-B*44, HLA-B*08, and HLA-DQB1*06 with a potential negative effect. Results for HLA-DRB1*15 are inconclusive. CONCLUSION In the era of MS treatment abundance, HLA genotype might serve as an early biomarker for MS outcomes to inform individualized treatment decisions.
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Abstract
A broad scientific consensus has emerged linking multiple sclerosis (MS) risk to multiple independent and interacting DNA variants that are relatively frequent in the population and act in concert with environmental exposures. The multifactorial, polygenic model of heritability provided the rationale and impetus to pursue genome-wide association studies (GWAS), which have been highly successful in uncovering genetic variants influencing susceptibility. Over 200 loci have been firmly associated with MS susceptibility. The main association signal genome-wide maps to the major histocompatibility complex ( MHC) gene cluster in chromosome 6p21. This association has been observed across all populations studied. However, a significant proportion of MS heritability remains unexplained. Decoding the genetics of MS represents a long-standing and important research goal in this disease, as the demonstration of even modest functional genomic effects on risk or the course of MS is likely to reveal fundamental disease mechanisms and possibly yield new therapeutic opportunities.
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Affiliation(s)
- Ester Canto
- Department of Neurology, University of California-San Francisco, San Francisco, CA, USA
| | - Jorge R Oksenberg
- Department of Neurology, University of California-San Francisco, San Francisco, CA, USA
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Al-Nashmi M, Taha S, Salem AH, Alsharoqi I, Bakhiet M. Distinct HLA class I and II genotypes and haplotypes are associated with multiple sclerosis in Bahrain. Biomed Rep 2018; 9:531-539. [PMID: 30546882 DOI: 10.3892/br.2018.1164] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 10/10/2018] [Indexed: 12/24/2022] Open
Abstract
Multiple sclerosis (MS) has become prevalent in the Arabian Gulf area with high incidence in Bahrain due to environmental influences and genetic susceptibilities, but there is a lack of study into human leukocyte antigen (HLA) types in patients with MS in Bahrain. The present study aimed to study the HLA types expressed in MS patients compared with in control subjects. Blood samples from 50 Bahraini patients with MS and 50 Bahraini control subjects' were subjected to HLA tissue typing by polymerase chain reaction using sequence-specific primers. In comparison with those in control subjects, the allele frequencies of HLA class-I antigens A2, A9, A19, B5, B35 and B40 were higher in MS patients. For class II antigens, the allele frequencies of DR3, DR4 and DR16 were higher in MS patients. The allele frequency of DR15 was lower in MS patients than in control subjects but the difference was not statistically significant (P=0.138). The higher prevalence of the HLA-ABDR allele was common among the female patients with MS, in relapse remission stage, in cases with higher expanded disability status scale scores and with disease duration between 4 and 9 years. Haplotype HLA-A2-B40-DR2 exhibited significantly higher frequency in MS patients compared with in control subjects (P=0.03). In conclusion, the results indicated different alleles associated with MS compared with previous reviews. The present study supports the importance of identifying genetic susceptibilities and targets for therapies in specific populations and individuals, to personalize disease management in terms of prediction, protective measures and treatment.
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Affiliation(s)
- Moudi Al-Nashmi
- Department of Molecular Medicine, Princess Al-Jawhara Center for Genetics and Inherited Diseases, Arabian Gulf University, Manama 329, Bahrain
| | - Safa Taha
- Department of Molecular Medicine, Princess Al-Jawhara Center for Genetics and Inherited Diseases, Arabian Gulf University, Manama 329, Bahrain
| | - Abdel Halim Salem
- Department of Anatomy, College of Medicine and Medical Sciences, Arabian Gulf University, Manama 329, Bahrain
| | - Isa Alsharoqi
- Department of Neuroscience, Salmaniya Medical Complex, Manama 12, Bahrain
| | - Moiz Bakhiet
- Department of Molecular Medicine, Princess Al-Jawhara Center for Genetics and Inherited Diseases, Arabian Gulf University, Manama 329, Bahrain
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Bove R, Chitnis T, Cree BA, Tintore M, Naegelin Y, Uitdehaag B, Kappos L, Khoury SJ, Montalban X, Hauser SL, Weiner HL. SUMMIT (Serially Unified Multicenter Multiple Sclerosis Investigation): creating a repository of deeply phenotyped contemporary multiple sclerosis cohorts. Mult Scler 2018; 24:1485-1498. [PMID: 28847219 PMCID: PMC5821573 DOI: 10.1177/1352458517726657] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND There is a pressing need for robust longitudinal cohort studies in the modern treatment era of multiple sclerosis. OBJECTIVE Build a multiple sclerosis (MS) cohort repository to capture the variability of disability accumulation, as well as provide the depth of characterization (clinical, radiologic, genetic, biospecimens) required to adequately model and ultimately predict a patient's course. METHODS Serially Unified Multicenter Multiple Sclerosis Investigation (SUMMIT) is an international multi-center, prospectively enrolled cohort with over a decade of comprehensive follow-up on more than 1000 patients from two large North American academic MS Centers (Brigham and Women's Hospital (Comprehensive Longitudinal Investigation of Multiple Sclerosis at the Brigham and Women's Hospital (CLIMB; BWH)) and University of California, San Francisco (Expression/genomics, Proteomics, Imaging, and Clinical (EPIC))). It is bringing online more than 2500 patients from additional international MS Centers (Basel (Universitätsspital Basel (UHB)), VU University Medical Center MS Center Amsterdam (MSCA), Multiple Sclerosis Center of Catalonia-Vall d'Hebron Hospital (Barcelona clinically isolated syndrome (CIS) cohort), and American University of Beirut Medical Center (AUBMC-Multiple Sclerosis Interdisciplinary Research (AMIR)). RESULTS AND CONCLUSION We provide evidence for harmonization of two of the initial cohorts in terms of the characterization of demographics, disease, and treatment-related variables; demonstrate several proof-of-principle analyses examining genetic and radiologic predictors of disease progression; and discuss the steps involved in expanding SUMMIT into a repository accessible to the broader scientific community.
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Affiliation(s)
- Riley Bove
- Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
| | - Tanuja Chitnis
- Ann Romney Center for Neurologic Diseases, Brigham and Women’s Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Bruce A.C. Cree
- Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
| | - Mar Tintore
- Centre d’Esclerosi Mútiple de Catalunya (Cemcat), Barcelona, Hospital Universitari Vall d’Hebron, Barcelona, Spain
| | - Yvonne Naegelin
- Center for MS and Neuroimmunology, Universitätsspital Basel, Basel, Switzerland
| | - Bernard Uitdehaag
- MS Cetner Amsterdam, VU University Medical Center, Amsterdam, Netherlands
| | - Ludwig Kappos
- Center for MS and Neuroimmunology, Universitätsspital Basel, Basel, Switzerland
| | - Samia J. Khoury
- Nehme and Therese Tohme Multiple Sclerosis Center, American University of Beirut Medical Center, Beirut, Lebanon
| | - Xavier Montalban
- Centre d’Esclerosi Mútiple de Catalunya (Cemcat), Barcelona, Hospital Universitari Vall d’Hebron, Barcelona, Spain
| | - Stephen L. Hauser
- Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
| | - Howard L. Weiner
- Ann Romney Center for Neurologic Diseases, Brigham and Women’s Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
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Creary LE, Mallempati KC, Gangavarapu S, Caillier SJ, Oksenberg JR, Fernández-Viňa MA. Deconstruction of HLA-DRB1*04:01:01 and HLA-DRB1*15:01:01 class II haplotypes using next-generation sequencing in European-Americans with multiple sclerosis. Mult Scler 2018; 25:772-782. [PMID: 29683085 DOI: 10.1177/1352458518770019] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BACKGROUND The association between HLA-DRB1*15:01 with multiple sclerosis (MS) susceptibility is well established, but the contribution of the tightly associated HLA-DRB5*01:01 allele has not yet been completely ascertained. Similarly, the effects of HLA-DRB1*04:01 alleles and haplotypes, defined at the full-gene resolution level with MS risk remains to be elucidated. OBJECTIVES To characterize the molecular architecture of class II HLA-DR15 and HLA-DR4 haplotypes associated with MS. METHODS Next-generation sequencing was used to determine HLA-DQB1, HLA-DQA1, and HLA-DRB1/4/5 alleles in 1403 unrelated European-American patients and 1425 healthy unrelated controls. Effect sizes of HLA alleles and haplotypes on MS risk were measured by odds ratio (OR) with 95% confidence intervals. RESULTS HLA-DRB1*15:01:01:01SG (OR = 3.20, p < 2.2E-16), HLA-DRB5*01:01:01 (OR = 2.96, p < 2.2E-16), and HLA-DRB5*01:01:01v1_STR1 (OR = 8.18, p = 4.3E-05) alleles all occurred at significantly higher frequencies in MS patients compared to controls. The most significant predis-posing haplotypes were HLA-DQB1*06:02:01~ HLA-DQA1*01:02:01:01SG~HLA-DRB1*15:01:01:01SG~HLA-DRB5*01:01:01 and HLA-DQB1*06:02:01~HLA-DQA1*01:02:01:01SG~HLA-DRB1*15:01:01:01SG~HLA-DRB5*01:01:01v1_STR1 (OR = 3.19, p < 2.2E-16; OR = 9.30, p = 9.7E-05, respectively). Analyses of the HLA-DRB1*04 cohort in the absence of HLA-DRB1*15:01 haplotypes revealed that the HLA-DQB1*03:01:01:01~HLA-DQA1*03:03:01:01~HLA-DRB1*04:01:01:01SG~HLA-DRB4*01:03:01:01 haplotype was protective (OR = 0.64, p = 0.028), whereas the HLA-DQB1*03:02:01~HLA-DQA1*03:01:01~HLA-DRB1*04:01:01:01SG~HLA-DRB4*01:03:01:01 haplotype was associated with MS susceptibility (OR = 1.66, p = 4.9E-03). CONCLUSION HLA-DR15 haplotypes, including genomic variants of HLA-DRB5, and HLA-DR4 haplotypes affect MS risk.
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Affiliation(s)
- Lisa E Creary
- Department of Pathology, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Kalyan C Mallempati
- Histocompatibility, Immunogenetics and Disease Profiling Laboratory, Stanford Blood Center, Palo Alto, CA, USA
| | - Sridevi Gangavarapu
- Histocompatibility, Immunogenetics and Disease Profiling Laboratory, Stanford Blood Center, Palo Alto, CA, USA
| | - Stacy J Caillier
- Department of Neurology, University of California, San Francisco, CA, USA
| | - Jorge R Oksenberg
- Department of Neurology, University of California, San Francisco, CA, USA
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Baecher-Allan C, Kaskow BJ, Weiner HL. Multiple Sclerosis: Mechanisms and Immunotherapy. Neuron 2018; 97:742-768. [DOI: 10.1016/j.neuron.2018.01.021] [Citation(s) in RCA: 432] [Impact Index Per Article: 72.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 09/25/2017] [Accepted: 01/09/2018] [Indexed: 12/17/2022]
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Lorefice L, Fenu G, Sardu C, Frau J, Coghe G, Costa G, Schirru L, Secci MA, Sechi V, Barracciu MA, Marrosu MG, Cocco E. Multiple sclerosis and HLA genotypes: A possible influence on brain atrophy. Mult Scler 2017; 25:23-30. [PMID: 29111883 DOI: 10.1177/1352458517739989] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND The strongest genetic determinant for multiple sclerosis (MS) is located at the human leukocyte antigen (HLA) class II DRB1 and DQB1 loci. OBJECTIVES To investigate the possible role of predisposing HLA genotypes in determining brain atrophy. METHODS HLA genotypes were categorized as high risk (two predisposing haplotypes) or medium/low risk (one or no predisposing haplotypes). Patients underwent a brain magnetic resonance imaging (MRI) study and volumes of white matter (WM), gray matter (GM), and whole brain (WB) were estimated with SIENAX. Longitudinal atrophy was also assessed with SIENA. RESULTS The study included 240 MS patients. In 51/240 (21%) subjects, a high-risk HLA genotype was observed, while medium- and low-risk HLA genotypes were 109/240 (45%) and 80/240 (34%), respectively. Multiple regression analysis found that the high-risk HLA genotype was associated with significant reduction in WB ( p = 0.02) and GM ( p = 0.03) volumes compared with the medium-/low-risk HLA genotypes, independently from MS clinical features. The longitudinal study included 60 patients and showed a brain volume loss of -0.79% in high-risk HLA genotype group versus -0.56% in low-risk HLA genotype. CONCLUSION Our results suggest an influence of HLA genotype on WB and GM atrophy. Further investigations are necessary to confirm these findings.
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Affiliation(s)
- Lorena Lorefice
- Multiple Sclerosis Center, Binaghi Hospital, ATS Sardegna, Cagliari, Italy/Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - Giuseppe Fenu
- Multiple Sclerosis Center, Binaghi Hospital, ATS Sardegna, Cagliari, Italy/Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - Claudia Sardu
- Unit of Epidemiology, Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - Jessica Frau
- Multiple Sclerosis Center, Binaghi Hospital, ATS Sardegna, Cagliari, Italy/Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - Giancarlo Coghe
- Multiple Sclerosis Center, Binaghi Hospital, ATS Sardegna, Cagliari, Italy/Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - Gianna Costa
- Multiple Sclerosis Center, Binaghi Hospital, ATS Sardegna, Cagliari, Italy/Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - Lucia Schirru
- Multiple Sclerosis Center, Binaghi Hospital, ATS Sardegna, Cagliari, Italy/Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - Maria Antonietta Secci
- Multiple Sclerosis Center, Binaghi Hospital, ATS Sardegna, Cagliari, Italy/Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - Vincenzo Sechi
- Radiology Unit, Binaghi Hospital, ATS Sardegna, Cagliari, Italy
| | | | - Maria Giovanna Marrosu
- Multiple Sclerosis Center, Binaghi Hospital, ATS Sardegna, Cagliari, Italy/Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - Eleonora Cocco
- Multiple Sclerosis Center, Binaghi Hospital, ATS Sardegna, Cagliari, Italy/Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
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17
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Correa E, Paredes V, Martínez B. Prevalence of multiple sclerosis in Latin America and its relationship with European migration. Mult Scler J Exp Transl Clin 2017; 2:2055217316666407. [PMID: 28607738 PMCID: PMC5433402 DOI: 10.1177/2055217316666407] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 08/04/2016] [Indexed: 12/03/2022] Open
Abstract
Multiple sclerosis (MS) is a chronic, degenerative autoimmune inflammatory disease of the central nervous system. The prevalence is different in every continent, changing according to geographical and environmental characteristics. The areas with the highest prevalence in the world are Europe and North America. In Latin America, the prevalence is higher in areas where there was greater European migration, as in the case of Argentina, Chile, Brazil, Uruguay and Mexico, and there have been no identified cases amongst native Indian populations. It should be considered that environmental factors may influence the prevalence of MS in Latin America, and it seems as if there are protective factors such as exposure to ultraviolet radiation and the presence of parasitosis.
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Affiliation(s)
| | | | - Braulio Martínez
- Department of Neurology and Autoimmune Diseases, Carlos Andrade Marin Hospital, Quito, Ecuador
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18
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Isobe N, Keshavan A, Gourraud PA, Zhu AH, Datta E, Schlaeger R, Caillier SJ, Santaniello A, Lizée A, Himmelstein DS, Baranzini SE, Hollenbach J, Cree BAC, Hauser SL, Oksenberg JR, Henry RG. Association of HLA Genetic Risk Burden With Disease Phenotypes in Multiple Sclerosis. JAMA Neurol 2017; 73:795-802. [PMID: 27244296 DOI: 10.1001/jamaneurol.2016.0980] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
IMPORTANCE Although multiple HLA alleles associated with multiple sclerosis (MS) risk have been identified, genotype-phenotype studies in the HLA region remain scarce and inconclusive. OBJECTIVES To investigate whether MS risk-associated HLA alleles also affect disease phenotypes. DESIGN, SETTING, AND PARTICIPANTS A cross-sectional, case-control study comprising 652 patients with MS who had comprehensive phenotypic information and 455 individuals of European origin serving as controls was conducted at a single academic research site. Patients evaluated at the Multiple Sclerosis Center at University of California, San Francisco between July 2004 and September 2005 were invited to participate. Spinal cord imaging in the data set was acquired between July 2013 and March 2014; analysis was performed between December 2014 and December 2015. MAIN OUTCOMES AND MEASURES Cumulative HLA genetic burden (HLAGB) calculated using the most updated MS-associated HLA alleles vs clinical and magnetic resonance imaging outcomes, including age at onset, disease severity, conversion time from clinically isolated syndrome to clinically definite MS, fractions of cortical and subcortical gray matter and cerebral white matter, brain lesion volume, spinal cord gray and white matter areas, upper cervical cord area, and the ratio of gray matter to the upper cervical cord area. Multivariate modeling was applied separately for each sex data set. RESULTS Of the 652 patients with MS, 586 had no missing genetic data and were included in the HLAGB analysis. In these 586 patients (404 women [68.9%]; mean [SD] age at disease onset, 33.6 [9.4] years), HLAGB was higher than in controls (median [IQR], 0.7 [0-1.4] and 0 [-0.3 to 0.5], respectively; P = 1.8 × 10-27). A total of 619 (95.8%) had relapsing-onset MS and 27 (4.2%) had progressive-onset MS. No significant difference was observed between relapsing-onset MS and primary progressive MS. A higher HLAGB was associated with younger age at onset and the atrophy of subcortical gray matter fraction in women with relapsing-onset MS (standard β = -1.20 × 10-1; P = 1.7 × 10-2 and standard β = -1.67 × 10-1; P = 2.3 × 10-4, respectively), which were driven mainly by the HLA-DRB1*15:01 haplotype. In addition, we observed the distinct role of the HLA-A*24:02-B*07:02-DRB1*15:01 haplotype among the other common DRB1*15:01 haplotypes and a nominally protective effect of HLA-B*44:02 to the subcortical gray atrophy (standard β = -1.28 × 10-1; P = 5.1 × 10-3 and standard β = 9.52 × 10-2; P = 3.6 × 10-2, respectively). CONCLUSIONS AND RELEVANCE We confirm and extend previous observations linking HLA MS susceptibility alleles with disease progression and specific clinical and magnetic resonance imaging phenotypic traits.
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Affiliation(s)
- Noriko Isobe
- Department of Neurology, School of Medicine, University of California, San Francisco
| | - Anisha Keshavan
- Department of Neurology, School of Medicine, University of California, San Francisco
| | | | - Alyssa H Zhu
- Department of Neurology, School of Medicine, University of California, San Francisco
| | - Esha Datta
- Department of Neurology, School of Medicine, University of California, San Francisco
| | - Regina Schlaeger
- Department of Neurology, School of Medicine, University of California, San Francisco2Department of Neurology, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Stacy J Caillier
- Department of Neurology, School of Medicine, University of California, San Francisco
| | - Adam Santaniello
- Department of Neurology, School of Medicine, University of California, San Francisco
| | - Antoine Lizée
- Department of Neurology, School of Medicine, University of California, San Francisco
| | - Daniel S Himmelstein
- Department of Neurology, School of Medicine, University of California, San Francisco3Biological and Medical Informatics, University of California, San Francisco
| | - Sergio E Baranzini
- Department of Neurology, School of Medicine, University of California, San Francisco3Biological and Medical Informatics, University of California, San Francisco
| | - Jill Hollenbach
- Department of Neurology, School of Medicine, University of California, San Francisco
| | - Bruce A C Cree
- Department of Neurology, School of Medicine, University of California, San Francisco
| | - Stephen L Hauser
- Department of Neurology, School of Medicine, University of California, San Francisco4Institute of Human Genetics, University of California, San Francisco
| | - Jorge R Oksenberg
- Department of Neurology, School of Medicine, University of California, San Francisco4Institute of Human Genetics, University of California, San Francisco
| | - Roland G Henry
- Department of Neurology, School of Medicine, University of California, San Francisco5Bioengineering Graduate Group, University of California, San Francisco and Berkeley6Department of Radiology and Biomedical Imaging, University of California, San Francisc
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Human leucocyte antigen (HLA) class I and II typing in Belgian multiple sclerosis patients. Acta Neurol Belg 2017; 117:61-65. [PMID: 27797002 DOI: 10.1007/s13760-016-0716-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 10/19/2016] [Indexed: 10/20/2022]
Abstract
This is one of the first studies to compare the frequencies of different human leucocyte antigen (HLA) class I and II alleles and haplotype HLA-DRB1*15-DQB1*06 in a cohort of 119 patients with multiple sclerosis (MS) and a cohort of 124 healthy controls in Belgium. An association with MS was found for the HLA-DRB1*15 (odds ratio [OR] 2.60 [95% confidence interval (CI) 1.51-4.50]) and HLA-DQB1*06 (OR 1.97 [95% CI 1.18-3.29]) alleles, and for haplotype DRB1*15-DQB1*06 (OR 2.63 [95% CI 1.52-4.56]). The HLA-B*07 allele also tended to be more frequent in MS patients (OR 1.46 [95% CI 0.80-2.65]) and more frequent among MS patients with than in those without the HLA-DRB1*15 allele (26/54 [48.1%] versus 6/65 [9.2%]; p value <0.0001). Other alleles were underrepresented in MS patients, such as the HLA-DRB1*07 (OR 0.39 [95% CI 0.21-0.73]) and HLA-A*02 (OR 0.56 [95% CI 0.34-0.94]), showing a protective role against the disease. The HLA-B*44 (OR 0.58 [95% CI 0.31-1.09]) and HLA-DRB1*04 (OR 0.75 [95% CI 0.42-1.34]) alleles tended to be less frequent in MS patients. Altogether, the significant results observed in this population are in line with those from other countries and confirm that propensity to MS can be due to a complex presence of various HLA class I and class II alleles.
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Lysandropoulos AP, Mavroudakis N, Pandolfo M, El Hafsi K, van Hecke W, Maertens A, Billiet T, Ribbens A. HLA genotype as a marker of multiple sclerosis prognosis: A pilot study. J Neurol Sci 2017; 375:348-354. [PMID: 28320165 DOI: 10.1016/j.jns.2017.02.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 12/26/2016] [Accepted: 02/07/2017] [Indexed: 01/28/2023]
Abstract
OBJECTIVE The identification of a biomarker with prognostic value is an unmet need in multiple sclerosis (MS). The objective of this study was to investigate a possible association of HLA genotype with disease status and progression in MS, based on comprehensive and sensitive clinical and magnetic resonance imaging (MRI) parameters to measure disease effects. METHOD A total of 118 MS patients (79 females, 39 males) underwent HLA typing. Patient MS status was assessed at two time points in a 2-year interval, based on clinical scores (including EDSS, MSSS, T25FW, 9-HPT, SDMT, BVMT, CVLT-II) and MRI evaluations. Quantitative brain MRI values were obtained for whole brain atrophy, FLAIR lesion volume change and number of new lesions using MSmetrix. Predefined HLA patient groups were compared as of disease status and progression. Global assessment was achieved by an overall t-statistic and assessment per measurement by a Welch test and/or Mann Whitney U test. The effects of multiple covariates, including age, gender and disease duration as well as scan parameters, were also evaluated using a regression analysis. RESULTS The HLA-A*02 allele was associated with better outcomes in terms of MSSS, EDSS and new lesion count (Welch test p-value<0.05). The HLA-B*07 and HLA-B*44 alleles showed a global negative effect on disease status, although none of the measurements reached significance (p-value<0.05). Results for the HLA-DRB1*15, HLA-DQB1*06 and HLA-B*08 alleles were inconclusive. The influence of the confounding variables on the statistical analysis was limited.
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Affiliation(s)
| | - Nicolas Mavroudakis
- Department of Neurology, Hôpital Erasme, Université Libre de Bruxelles, Belgium
| | - Massimo Pandolfo
- Department of Neurology, Hôpital Erasme, Université Libre de Bruxelles, Belgium
| | - Kaoutar El Hafsi
- Department of Neurology, Hôpital Erasme, Université Libre de Bruxelles, Belgium
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Dulamea AO. Role of Oligodendrocyte Dysfunction in Demyelination, Remyelination and Neurodegeneration in Multiple Sclerosis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 958:91-127. [PMID: 28093710 DOI: 10.1007/978-3-319-47861-6_7] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Oligodendrocytes (OLs) are the myelinating cells of the central nervous system (CNS) during development and throughout adulthood. They result from a complex and well controlled process of activation, proliferation, migration and differentiation of oligodendrocyte progenitor cells (OPCs) from the germinative niches of the CNS. In multiple sclerosis (MS), the complex pathological process produces dysfunction and apoptosis of OLs leading to demyelination and neurodegeneration. This review attempts to describe the patterns of demyelination in MS, the steps involved in oligodendrogenesis and myelination in healthy CNS, the different pathways leading to OLs and myelin loss in MS, as well as principles involved in restoration of myelin sheaths. Environmental factors and their impact on OLs and pathological mechanisms of MS are also discussed. Finally, we will present evidence about the potential therapeutic targets in re-myelination processes that can be accessed in order to develop regenerative therapies for MS.
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Affiliation(s)
- Adriana Octaviana Dulamea
- Neurology Clinic, University of Medicine and Pharmacy "Carol Davila", Fundeni Clinical Institute, Building A, Neurology Clinic, Room 201, 022328, Bucharest, Romania.
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Pan G, Simpson S, van der Mei I, Charlesworth JC, Lucas R, Ponsonby AL, Zhou Y, Wu F, Taylor BV. Role of genetic susceptibility variants in predicting clinical course in multiple sclerosis: a cohort study. J Neurol Neurosurg Psychiatry 2016; 87:1204-1211. [PMID: 27559181 DOI: 10.1136/jnnp-2016-313722] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 08/01/2016] [Indexed: 01/21/2023]
Abstract
BACKGROUND The genetic drivers of multiple sclerosis (MS) clinical course are essentially unknown with limited data arising from severity and clinical phenotype analyses in genome-wide association studies. METHODS Prospective cohort study of 127 first demyelinating events with genotype data, where 116 MS risk-associated single nucleotide polymorphisms (SNPs) were assessed as predictors of conversion to MS, relapse and annualised disability progression (Expanded Disability Status Scale, EDSS) up to 5-year review (ΔEDSS). Survival analysis was used to test for predictors of MS and relapse, and linear regression for disability progression. The top 7 SNPs predicting MS/relapse and disability progression were evaluated as a cumulative genetic risk score (CGRS). RESULTS We identified 2 non-human leucocyte antigen (HLA; rs12599600 and rs1021156) and 1 HLA (rs9266773) SNP predicting both MS and relapse risk. Additionally, 3 non-HLA SNPs predicted only conversion to MS; 1 HLA and 2 non-HLA SNPs predicted only relapse; and 7 non-HLA SNPs predicted ΔEDSS. The CGRS significantly predicted MS and relapse in a significant, dose-dependent manner: those having ≥5 risk genotypes had a 6-fold greater risk of converting to MS and relapse compared with those with ≤2. The CGRS for ΔEDSS was also significant: those carrying ≥6 risk genotypes progressed at 0.48 EDSS points per year faster compared with those with ≤2, and the CGRS model explained 32% of the variance in disability in this study cohort. CONCLUSIONS These data strongly suggest that MS genetic risk variants significantly influence MS clinical course and that this effect is polygenic.
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Affiliation(s)
- Gongbu Pan
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
| | - Steve Simpson
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
| | - Ingrid van der Mei
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
| | - Jac C Charlesworth
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
| | - Robyn Lucas
- National Centre for Epidemiology and Population Health, Research School of Population Health, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Anne-Louise Ponsonby
- Murdoch Children's Research Institute, University of Melbourne, Melbourne, Victoria, Australia
| | - Yuan Zhou
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
| | - Feitong Wu
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
| | - Bruce V Taylor
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
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Jokubaitis VG, Butzkueven H. A genetic basis for multiple sclerosis severity: Red herring or real? Mol Cell Probes 2016; 30:357-365. [PMID: 27546889 DOI: 10.1016/j.mcp.2016.08.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 08/17/2016] [Accepted: 08/17/2016] [Indexed: 01/24/2023]
Abstract
Multiple Sclerosis (MS) is an autoimmune degenerative disease of the central nervous system, characterized by multifocal demyelination and neurodegeneration. The genetic architecture of MS is complex, where genetic risk has been attributed to over 100 polymorphic loci each with small odds ratios. MS is a highly heterogeneous disease with numerous clinical and paraclinical endophenotypes. To-date, no genetic variant has been associated with clinical outcome, however, evidence exists that MS outcomes, like risk, are to an extent also controlled by genetic variation. Here we summarise the current evidence for genetic determination of disease outcomes and make recommendations for future research directions.
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Affiliation(s)
- Vilija G Jokubaitis
- Department of Medicine and Melbourne Brain Centre at the Royal Melbourne Hospital, University of Melbourne, Australia; Department of Neurology, Royal Melbourne Hospital, Melbourne, Australia.
| | - Helmut Butzkueven
- Department of Medicine and Melbourne Brain Centre at the Royal Melbourne Hospital, University of Melbourne, Australia; Department of Neurology, Royal Melbourne Hospital, Melbourne, Australia; Department of Neurology, Box Hill Hospital, Monash University, Box Hill, Australia
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Werneck LC, Lorenzoni PJ, Arndt RC, Kay CSK, Scola RH. The immunogenetics of multiple sclerosis. The frequency of HLA-alleles class 1 and 2 is lower in Southern Brazil than in the European population. ARQUIVOS DE NEURO-PSIQUIATRIA 2016; 74:607-16. [DOI: 10.1590/0004-282x20160100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 05/25/2016] [Indexed: 11/22/2022]
Abstract
ABSTRACT Objective To study the HLA of class 1and 2 in a multiple sclerosis (MS) population to verify the susceptibility for the disease in the Southern Brazil. Methods We analyzed patients with MS and controls, by direct sequencing of the genes related to HLA DRB1, DQB1, DPB1, A, B and C alleles with high resolution techniques. Results We found a lower frequency of all HLA alleles class 1 and 2 in MS and controls comparing to the European population. Several alleles had statistical correlation, but after Bonferroni correction, the only allele with significance was the HLA-DQB1*02:03, which has a positive association with MS. Conclusions Our data have different frequency of HLA-alleles than the previous published papers in the Southeast Brazil and European population, possible due to several ethnic backgrounds.
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Bove R, Chua AS, Xia Z, Chibnik L, De Jager PL, Chitnis T. Complex relation of HLA-DRB1*1501, age at menarche, and age at multiple sclerosis onset. NEUROLOGY-GENETICS 2016; 2:e88. [PMID: 27504495 PMCID: PMC4962522 DOI: 10.1212/nxg.0000000000000088] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Accepted: 06/17/2016] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To examine the relationship between 2 markers of early multiple sclerosis (MS) onset, 1 genetic (HLA-DRB1*1501) and 1 experiential (early menarche), in 2 cohorts. METHODS We included 540 white women with MS or clinically isolated syndrome (N = 156 with genetic data available) and 1,390 white women without MS but with a first-degree relative with MS (Genes and Environment in Multiple Sclerosis [GEMS]). Age at menarche, HLA-DRB1*1501 status, and age at MS onset were analyzed. RESULTS In both cohorts, participants with at least 1 HLA-DRB1*1501 allele had a later age at menarche than did participants with no risk alleles (MS: mean difference = 0.49, 95% confidence interval [CI] = [0.03-0.95], p = 0.036; GEMS: mean difference = 0.159, 95% CI = [0.012-0.305], p = 0.034). This association remained after we adjusted for body mass index at age 18 (available in GEMS) and for other MS risk alleles, as well as a single nucleotide polymorphism near the HLA-A region previously associated with age of menarche (available in MS cohort). Confirming previously reported associations, in our MS cohort, every year decrease in age at menarche was associated with a 0.65-year earlier MS onset (95% CI = [0.07-1.22], p = 0.027, N = 540). Earlier MS onset was also found in individuals with at least 1 HLA-DRB1*1501 risk allele (mean difference = -3.40 years, 95% CI = [-6.42 to -0.37], p = 0.028, N = 156). CONCLUSIONS In 2 cohorts, a genetic marker for earlier MS onset (HLA-DRB1*1501) was inversely related to earlier menarche, an experiential marker for earlier symptom onset. This finding warrants broader investigations into the association between the HLA region and hormonal regulation in determining the onset of autoimmune disease.
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Affiliation(s)
- Riley Bove
- Department of Neurology (R.B., A.S.C., Z.X., P.L.D.J., T.C.), Partners Multiple Sclerosis Center, Brigham and Women's Hospital, Brookline, MA; and Ann Romney Center for Neurologic Diseases (R.B., A.S.C., Z.X., L.C., P.L.D.J., T.C.), Harvard Medical School (R.B., Z.X., L.C., P.L.D.J., T.C.), Boston, MA
| | - Alicia S Chua
- Department of Neurology (R.B., A.S.C., Z.X., P.L.D.J., T.C.), Partners Multiple Sclerosis Center, Brigham and Women's Hospital, Brookline, MA; and Ann Romney Center for Neurologic Diseases (R.B., A.S.C., Z.X., L.C., P.L.D.J., T.C.), Harvard Medical School (R.B., Z.X., L.C., P.L.D.J., T.C.), Boston, MA
| | - Zongqi Xia
- Department of Neurology (R.B., A.S.C., Z.X., P.L.D.J., T.C.), Partners Multiple Sclerosis Center, Brigham and Women's Hospital, Brookline, MA; and Ann Romney Center for Neurologic Diseases (R.B., A.S.C., Z.X., L.C., P.L.D.J., T.C.), Harvard Medical School (R.B., Z.X., L.C., P.L.D.J., T.C.), Boston, MA
| | - Lori Chibnik
- Department of Neurology (R.B., A.S.C., Z.X., P.L.D.J., T.C.), Partners Multiple Sclerosis Center, Brigham and Women's Hospital, Brookline, MA; and Ann Romney Center for Neurologic Diseases (R.B., A.S.C., Z.X., L.C., P.L.D.J., T.C.), Harvard Medical School (R.B., Z.X., L.C., P.L.D.J., T.C.), Boston, MA
| | - Philip L De Jager
- Department of Neurology (R.B., A.S.C., Z.X., P.L.D.J., T.C.), Partners Multiple Sclerosis Center, Brigham and Women's Hospital, Brookline, MA; and Ann Romney Center for Neurologic Diseases (R.B., A.S.C., Z.X., L.C., P.L.D.J., T.C.), Harvard Medical School (R.B., Z.X., L.C., P.L.D.J., T.C.), Boston, MA
| | - Tanuja Chitnis
- Department of Neurology (R.B., A.S.C., Z.X., P.L.D.J., T.C.), Partners Multiple Sclerosis Center, Brigham and Women's Hospital, Brookline, MA; and Ann Romney Center for Neurologic Diseases (R.B., A.S.C., Z.X., L.C., P.L.D.J., T.C.), Harvard Medical School (R.B., Z.X., L.C., P.L.D.J., T.C.), Boston, MA
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Longbrake EE, Hafler DA. Linking Genotype to Clinical Phenotype in Multiple Sclerosis: In Search of the Holy Grail. JAMA Neurol 2016; 73:777-8. [PMID: 27244583 PMCID: PMC5198230 DOI: 10.1001/jamaneurol.2016.1227] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Erin E Longbrake
- Department of Neurology, Yale School of Medicine, New Haven, Connecticut2Department of Neurology, Washington University in St Louis, St Louis, Missouri
| | - David A Hafler
- Department of Neurology, Yale School of Medicine, New Haven, Connecticut3Department of Immunobiology, Yale School of Medicine, New Haven, Connecticut
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Huseby ES, Kamimura D, Arima Y, Parello CS, Sasaki K, Murakami M. Role of T cell-glial cell interactions in creating and amplifying central nervous system inflammation and multiple sclerosis disease symptoms. Front Cell Neurosci 2015; 9:295. [PMID: 26300731 PMCID: PMC4525059 DOI: 10.3389/fncel.2015.00295] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 07/17/2015] [Indexed: 12/31/2022] Open
Abstract
Multiple Sclerosis (MS) is an inflammatory disease of the Central Nervous System (CNS) that causes the demyelination of nerve cells and destroys oligodendrocytes, neurons and axons. Historically, MS has been thought of as a T cell-mediated autoimmune disease of CNS white matter. However, recent studies have identified gray matter lesions in MS patients, suggesting that CNS antigens other than myelin proteins may be involved during the MS disease process. We have recently found that T cells targeting astrocyte-specific antigens can drive unique aspects of inflammatory CNS autoimmunity, including the targeting of gray matter and white matter of the brain and inducing heterogeneous clinical disease courses. In addition to being a target of T cells, astrocytes play a critical role in propagating the inflammatory response within the CNS induced NF-κB signaling. Here, we will discuss the pathophysiology of CNS inflammation mediated by T cell—glial cell interactions and its contributions to CNS autoimmunity.
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Affiliation(s)
- Eric S Huseby
- Department of Pathology, University of Massachusetts Medical School Worcester, MA, USA
| | - Daisuke Kamimura
- Division of Molecular Neuroimmunology, Institute for Genetic Medicine and Graduate School of Medicine, Hokkaido University Sapporo, Japan
| | - Yasunobu Arima
- Division of Molecular Neuroimmunology, Institute for Genetic Medicine and Graduate School of Medicine, Hokkaido University Sapporo, Japan
| | - Caitlin S Parello
- Department of Pathology, University of Massachusetts Medical School Worcester, MA, USA
| | - Katsuhiro Sasaki
- Department of Pathology, University of Massachusetts Medical School Worcester, MA, USA
| | - Masaaki Murakami
- Division of Molecular Neuroimmunology, Institute for Genetic Medicine and Graduate School of Medicine, Hokkaido University Sapporo, Japan
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Ciccarelli O, Toosy AT. Conversion from clinically isolated syndrome to multiple sclerosis: A large multicentre study. Mult Scler 2015; 21:967-8. [PMID: 26041796 DOI: 10.1177/1352458515588583] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Didonna A, Oksenberg JR. Genetic determinants of risk and progression in multiple sclerosis. Clin Chim Acta 2015; 449:16-22. [PMID: 25661088 DOI: 10.1016/j.cca.2015.01.034] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 01/21/2015] [Indexed: 01/07/2023]
Abstract
Multiple sclerosis (MS) is an autoimmune disease that represents a primary cause of neurological disability in the young adult population. Converging evidence supports the importance of genetic determinants for MS etiology. However, with the exception of the major histocompatibility complex, their nature has been elusive for more than 20 years. In the last decade, the advent of large genome-wide association studies has significantly improved our understanding of the disease, leading to the golden era of MS genetic research. To date more than 110 genetic variants have been firmly associated to an increased risk of developing MS. A large part of these variants tag genes involved in the regulation of immune response and several of them are shared with other autoimmune diseases, suggesting a common etiological root for this class of disorders. Despite the impressive body of data obtained in the last years, we are still far from fully decoding MS genetic complexity. For example, we ignore how these genetic factors interact with each other and with the environment. Thus, the biggest challenge for the next era of MS research will consist in identifying and characterizing the molecular mechanisms and the cellular pathways in which these risk variants play a role.
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Affiliation(s)
- Alessandro Didonna
- Department of Neurology, University of California San Francisco, San Francisco, CA, USA
| | - Jorge R Oksenberg
- Department of Neurology, University of California San Francisco, San Francisco, CA, USA.
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Akkad DA, Bellenberg B, Esser S, Weiler F, Epplen JT, Gold R, Lukas C, Haghikia A. Multiple sclerosis risk loci correlate with cervical cord atrophy and may explain the course of disability. Neurogenetics 2015; 16:161-8. [PMID: 25620546 DOI: 10.1007/s10048-015-0438-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 01/08/2015] [Indexed: 10/24/2022]
Abstract
Genome-wide association studies (GWAS) underscore the genetic basis of multiple sclerosis (MS); however, only few of the newly reported genetic variations relevant in MS have been replicated or correlated for clinical/paraclinical phenotypes such as spinal cord atrophy in independent patient cohorts. We genotyped 141 MS patients for 58 variations reported to reach significance in GWAS. Expanded disability status scale (EDSS) and disease duration (DD) are available from regular clinical examinations. MRI included sagittal high-resolution 3D T1-weighted magnetization-prepared rapid acquisition gradient echo of the cervical cord region used for volumetry. Due dependency of mean upper cervical cord area (MUCCA) with EDSS and/or DD, correction operations were performed compensating for EDSS/DD. We assessed each MS risk locus for possible MUCCA association. We identified twelve risk loci that significantly correlated with MUCCA. For nine loci-BATF, CYP27B1, IL12B, NFKB1, IL7, PLEK, EVI5, TAGAP and nrs669607-patients revealed significantly higher degree of atrophy; TYK2, RGS1 and CLEC16A revealed inverse effects. The weighted genetic risk score over the twelve loci showed significant correlation with MUCCA. Our data reveal a risk gene depending paraclinical/clinical phenotype. Since MUCCA clearly correlates with disability, the candidates identified here may serve as prognostic markers for disability progression.
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Affiliation(s)
- Denis A Akkad
- Department of Human Genetics, Ruhr-University Bochum, Universitaetstr 150, 44801, Bochum, Germany,
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Abstract
One of the most consistent findings in multiple sclerosis (MS) is that development of MS is linked with carriage of the class II human leucocyte antigen (HLA) molecule HLA-DRB1*15:01; around 60 % of Caucasian MS patients carry this allele compared to 25-30 % of ethnically matched healthy individuals. However, other HLA molecules have also been linked to the development of MS. In this chapter, the association between different HLA types and susceptibility to MS will be reviewed, and other linkages between the carriage of specific HLA molecules and clinical and experimental findings in MS will be considered.
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Affiliation(s)
- Judith M Greer
- The University of Queensland, UQ Centre for Clinical Research, Building 71/918 Riyal Brisbane and Women's Hospital, Brisbane, QLD, 4029, Australia.
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32
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Abstract
Multiple sclerosis (MS) is a common disease of the central nervous system, with various clinical symptoms and a heterogeneous disease course. MRI can depict focal and diffuse manifestations of the disease, and accurately measure progression over time. The precise pathogenesis of MS is unknown. Nevertheless, genetic influences have been found for susceptibility to MS in linkage and association studies. More recent genome-wide association studies have revealed other genes to be related to disease susceptibility and severity, explaining part of the variability in symptoms, radiological manifestations and disease course. Studies relating genetics and imaging in MS are discussed in this paper.
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Sasaki K, Bean A, Shah S, Schutten E, Huseby PG, Peters B, Shen ZT, Vanguri V, Liggitt D, Huseby ES. Relapsing-remitting central nervous system autoimmunity mediated by GFAP-specific CD8 T cells. THE JOURNAL OF IMMUNOLOGY 2014; 192:3029-42. [PMID: 24591371 DOI: 10.4049/jimmunol.1302911] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Multiple sclerosis (MS) is an inflammatory disease of the CNS that causes the demyelination of nerve cells and destroys oligodendrocytes, neurons, and axons. Historically, MS has been thought to be a CD4 T cell-mediated autoimmune disease of CNS white matter. However, recent studies identified CD8 T cell infiltrates and gray matter lesions in MS patients. These findings suggest that CD8 T cells and CNS Ags other than myelin proteins may be involved during the MS disease process. In this article, we show that CD8 T cells reactive to glial fibrillary acidic protein (GFAP), a protein expressed in astrocytes, can avoid tolerance mechanisms and, depending upon the T cell-triggering event, drive unique aspects of inflammatory CNS autoimmunity. In GFAP-specific CD8 TCR-transgenic (BG1) mice, tissue resident memory-like CD8 T cells spontaneously infiltrate the gray matter and white matter of the CNS, resulting in a relapsing-remitting CNS autoimmunity. The frequency, severity, and remissions from spontaneous disease are controlled by the presence of polyclonal B cells. In contrast, a viral trigger induces GFAP-specific CD8 T effector cells to exclusively target the meninges and vascular/perivascular space of the gray and white matter of the brain, causing a rapid, acute CNS disease. These findings demonstrate that the type of CD8 T cell-triggering event can determine the presentation of distinct CNS autoimmune disease pathologies.
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Affiliation(s)
- Katsuhiro Sasaki
- Department of Pathology, University of Massachusetts Medical School, Worcester, MA 01655
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34
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Järventausta PJ, Holopainen JM, Zalentein WN, Paakkanen R, Wennerström A, Seppänen M, Lokki ML, Tervo TMT. Peripheral hypertrophic subepithelial corneal degeneration: characterization, treatment and association with human leucocyte antigen genes. Acta Ophthalmol 2014; 92:71-6. [PMID: 23388055 DOI: 10.1111/aos.12029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE To evaluate the efficacy of keratectomy in treating irregular astigmatism caused by peripheral hypertrophic subepithelial corneal degeneration (PHSD) and to study the possible underlying immunological risk factors. MATERIALS AND METHODS Patients (14 eyes) with diagnosed PHSD were treated with superficial keratectomy with or without the assistance of phototherapeutic keratectomy (VisX S4; VisX Inc., Santa Ana, CA, USA). Thirteen patients were subjected to analysis of human leucocyte antigen (HLA) genes, complement C4 gene numbers and total plasma immunoglobulin levels. Immunological risk factors between patients and a control group comprising 150 individuals were compared. RESULTS The mean preoperative best spectacle corrected visual acuity (BCVA) improved from 0.16 ± 0.22 (LogMAR scale range 0-0.7) to 0.06 ± 0.13 (-0.1-0.4) (p < 0.01). The mean preoperative astigmatism decreased significantly from 3.8 ± 2.1 D (range 1.2-8.2) to 2.1 ± 1.4 (range 0.6-5.0, p = 0.02) based on corneal topography. The HLA-B*44 allele and the ancestral haplotype (AH) 8.1 were found significantly more often in PHSD patients than in controls (both p = 0.03). No differences in the C4 genes were found. CONCLUSIONS Astigmatism secondary to PHSD can be effectively treated with keratectomy. Peeling of the fibrotic tissue reduced astigmatism and improved visual performance. We suggest that HLA-B*44 allele and AH 8.1 haplotype are immunological factors predisposing to the development of PHSD. The consequent disruption/alteration of the limbal barrier may lead to corneal peripheral fibrous formation inducing astigmatism.
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Affiliation(s)
- Petri J Järventausta
- Cornea Service, Helsinki University Eye Hospital, Helsinki, FinlandTransplantation Laboratory, Haartman Institute, University of Helsinki, Helsinki, FinlandDivision of Cardiology, Department of Medicine, Helsinki University Central Hospital, Helsinki, FinlandImmunodeficiency Unit, Division of Infectious Diseases, Department of Medicine, Helsinki University Central Hospital, Helsinki, Finland
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Abstract
Familial aggregation and the studies of twins indicate that heredity contributes to multiple sclerosis (MS) risk. Immunologic studies of leukocyte antigens subsequently followed by gene-mapping techniques identified the primary MS susceptibility locus to be within the major histocompatibility complex (MHC). The primary risk allele is HLA-DRB1*15, although other alleles of this gene also influence MS susceptibility. Other genes within the MHC also contribute to MS susceptibility. Genome-wide association studies have identified over 50 additional common variants of genes across the genome. Estimates suggest that there may be as many as 200 genes involved in MS susceptibility. In addition to these common polymorphisms, studies have identified several rare risk alleles in some families. Interestingly, the majority of the genes identified have known immunologic functions and many contribute to the risk of inheriting other autoimmune diseases. Genetic variants in the vitamin D metabolic pathway have also been identified. That vitamin D contributes to MS susceptibility as both an environmental as well as genetic risk factor underscores the importance of this metabolic pathway in disease pathogenesis. Current efforts are focused on understanding how the myriad of genetic risk alleles interact within networks to influence MS risk at family level as well as within populations.
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Affiliation(s)
- Bruce A C Cree
- Department of Neurology, University of California, San Francisco, USA.
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36
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Patsopoulos NA, Barcellos LF, Hintzen RQ, Schaefer C, van Duijn CM, Noble JA, Raj T, Gourraud PA, Stranger BE, Oksenberg J, Olsson T, Taylor BV, Sawcer S, Hafler DA, Carrington M, De Jager PL, de Bakker PIW. Fine-mapping the genetic association of the major histocompatibility complex in multiple sclerosis: HLA and non-HLA effects. PLoS Genet 2013; 9:e1003926. [PMID: 24278027 PMCID: PMC3836799 DOI: 10.1371/journal.pgen.1003926] [Citation(s) in RCA: 208] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Accepted: 09/13/2013] [Indexed: 12/19/2022] Open
Abstract
The major histocompatibility complex (MHC) region is strongly associated with multiple sclerosis (MS) susceptibility. HLA-DRB1*15:01 has the strongest effect, and several other alleles have been reported at different levels of validation. Using SNP data from genome-wide studies, we imputed and tested classical alleles and amino acid polymorphisms in 8 classical human leukocyte antigen (HLA) genes in 5,091 cases and 9,595 controls. We identified 11 statistically independent effects overall: 6 HLA-DRB1 and one DPB1 alleles in class II, one HLA-A and two B alleles in class I, and one signal in a region spanning from MICB to LST1. This genomic segment does not contain any HLA class I or II genes and provides robust evidence for the involvement of a non-HLA risk allele within the MHC. Interestingly, this region contains the TNF gene, the cognate ligand of the well-validated TNFRSF1A MS susceptibility gene. The classical HLA effects can be explained to some extent by polymorphic amino acid positions in the peptide-binding grooves. This study dissects the independent effects in the MHC, a critical region for MS susceptibility that harbors multiple risk alleles.
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Affiliation(s)
- Nikolaos A. Patsopoulos
- Program in Translational NeuroPsychiatric Genomics, Institute for the Neurosciences, Department of Neurology, Brigham & Women's Hospital, Boston, Massachusetts, United States of America
- Division of Genetics, Department of Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- Harvard Medical School, Boston, Massachusetts, United States of America
- Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Lisa F. Barcellos
- Division of Epidemiology, Genetic Epidemiology and Genomics Laboratory, School of Public Health, University of California, Berkeley, Berkeley, California, United States of America
- Kaiser Permanente Division of Research, Oakland, California, United States of America
| | - Rogier Q. Hintzen
- Department of Neurology, MS Centre ErasMS, Erasmus MC, Rotterdam, The Netherlands
| | - Catherine Schaefer
- Kaiser Permanente Division of Research, Oakland, California, United States of America
| | - Cornelia M. van Duijn
- Genetic Epidemiology Unit, Department of Epidemiology and Biostatistics and Clinical Genetics, Erasmus MC, Rotterdam, The Netherlands
| | - Janelle A. Noble
- Children's Hospital Oakland Research Institute, Oakland, California, United States of America
| | - Towfique Raj
- Program in Translational NeuroPsychiatric Genomics, Institute for the Neurosciences, Department of Neurology, Brigham & Women's Hospital, Boston, Massachusetts, United States of America
- Harvard Medical School, Boston, Massachusetts, United States of America
- Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | | | | | - Pierre-Antoine Gourraud
- Department of Neurology, University, of California at San Francisco, San Francisco, California, United States of America
| | - Barbara E. Stranger
- Section of Genetic Medicine, Department of Medicine, University of Chicago, Chicago, Illinois, United States of America
- Institute for Genomics and Systems Biology, University of Chicago, Chicago, Illinois, United States of America
| | - Jorge Oksenberg
- Department of Neurology, University, of California at San Francisco, San Francisco, California, United States of America
| | - Tomas Olsson
- Department of Clinical Neuroscience CMM, Karolinska Institutet, Stockholm, Sweden
| | - Bruce V. Taylor
- Menzies Research Institute Tasmania, University of Tasmania, Hobart, Australia
| | - Stephen Sawcer
- University of Cambridge, Department of Clinical Neuroscience, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - David A. Hafler
- Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
- Department of Neurology and Department of Immunobiology, Yale University, School of Medicine, New Haven, Connecticut, United States of America
| | - Mary Carrington
- Cancer and Inflammation Program, Laboratory of Experimental Immunology, SAIC Frederick, Frederick National Laboratory for Cancer Research, Frederick, Maryland, United States of America
- Ragon Institute of MGH, MIT, and Harvard, Charlestown, Massachusetts, United States of America
| | - Philip L. De Jager
- Program in Translational NeuroPsychiatric Genomics, Institute for the Neurosciences, Department of Neurology, Brigham & Women's Hospital, Boston, Massachusetts, United States of America
- Harvard Medical School, Boston, Massachusetts, United States of America
- Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Paul I. W. de Bakker
- Division of Genetics, Department of Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- Harvard Medical School, Boston, Massachusetts, United States of America
- Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
- Department of Medical Genetics, Division of Biomedical Genetics, University Medical Center, Utrecht, The Netherlands
- Julius Center for Health Sciences and Primary Care, University Medical Center, Utrecht, The Netherlands
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Yi L, Wang J, Guo X, Espitia MG, Chen E, Assassi S, Jin L, Zou H, Reveille JD, Zhou X. Profiling of hla-B alleles for association studies with ankylosing spondylitis in the chinese population. Open Rheumatol J 2013; 7:51-4. [PMID: 24062861 PMCID: PMC3778539 DOI: 10.2174/1874312920130628001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 06/19/2013] [Accepted: 06/24/2013] [Indexed: 11/22/2022] Open
Abstract
Human leucocyte antigen (HLA) B*27 is a susceptibility allele to ankylosing spondylitis (AS). However, major AS-associated subtypes of HLA-B*27 and other HLA-B alleles vary in different ethnic populations. Herein, we examined HLA-B alleles in a total of 360 AS patients and 350 controls of Chinese Han ancestry. The HLA-B genotyping was performed with sequence-based typing (SBT) method. Six HLA-B*27 subtypes B*27:04, B*27:05, B*27:07, B*27:08, B*27:10 and B*27:15 were observed in the cohorts. HLA-B*27:04:01 and -B*27:05:02 appeared significantly increased in AS patients, which indicated as two major susceptibility alleles to AS. Homozygous B*27 was observed only in AS patients. There are 30 HLA-B alleles identified in the studies. HLA-B*15, especially B*15:01:01:01, appeared as the major allele type in the Chinese controls. Some common HLA-B alleles such as HLA-B*15, B*13, B*46 and B*51 were significantly reduced in Chinese AS patients. In conclusion, the studies profiled the HLA-B alleles, and identified major susceptibility subtypes of B27 to AS in Han Chinese population
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Affiliation(s)
- Lin Yi
- Division of Rheumatology and Clinical Immunogenetics, University of Texas Medical School at Houston, USA ; Gansu College of Traditional Chinese Medicine, Lanzhou, Gansu, China
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Abstract
Multiple sclerosis (MS) is universally found to be more prevalent in women than men. This has led to extensive studies of differences in the immune system or nervous system between women and men, which might be caused by the effects of gonadal hormones, genetic differences, and different environmental exposures and modern lifestyle in men and women. We review the effects of sex and gender from a genetic, immunological and clinical point of view. We discuss the effects of sex on the clinical expression of MS and responses to therapy, as well as issues concerning pregnancy.
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Affiliation(s)
- Hanne F Harbo
- Department of Neurology, Oslo University Hospital, Ullevål and University of Oslo, 0407 Oslo, Norway
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Myelin oligodendrocyte glycoprotein induces aquaporin-4 autoantibodies in mouse experimental autoimmune encephalomyelitis. J Neuroimmunol 2013; 261:1-6. [PMID: 23707078 DOI: 10.1016/j.jneuroim.2013.03.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Revised: 03/18/2013] [Accepted: 03/22/2013] [Indexed: 11/22/2022]
Abstract
To investigate whether AQP4 autoantibodies (AQP4-Ab) are causative for neuromyelitis optica (NMO), the production of AQP4-Ab and clinical experimental autoimmune encephalomyelitis (EAE) was investigated in mice administered with mouse AQP4 antigen or myelin oligodendrocyte glycoprotein (MOG35-55) alone, and in combination. Eight- to twelve-week-old female C57BL/6 mice were randomly immunized with encephalitogenic mixture containing 300 μg of MOG35-55 or AQP4 antigen alone, and in combination in complete Freund's adjuvant supplemented with H37Ra M. tuberculosis. The incidence of EAE, Weaver 15 scores, and body weight was evaluated. ELISA was used to detect serum mouse AQP4-Ab. Mice injected with MOG35-55 and MOG33-35 plus AQP4 antigen began to show EAE symptoms 12 days after immunization. The incidence of EAE was 91.6%, and 62.5%, for MOG35-55 alone and MOG33-35 plus AQP4 antigen groups, respectively, while AQP4 antigen alone didn't develop EAE. In all but the control group, serum AQP4-Ab levels were increased, and correlated positively with Weaver 15 score (rs=0.713, p=0.000) and negatively with body weight changes (rs=-0.415, p=0.011). Injection of human NMO sera positive for AQP4-Ab exacerbated MOG-induced EAE. Our results suggest that AQP4-Ab can be produced in MOG-induced MS model, and itself is not sufficient for the development of EAE, implying that NMO might be a subtype or transition from MS.
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Inkster B, Strijbis EM, Vounou M, Kappos L, Radue EW, Matthews PM, Uitdehaag BM, Barkhof F, Polman CH, Montana G, Geurts JJ. Histone deacetylase gene variants predict brain volume changes in multiple sclerosis. Neurobiol Aging 2013; 34:238-47. [DOI: 10.1016/j.neurobiolaging.2012.07.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 07/05/2012] [Accepted: 07/11/2012] [Indexed: 11/15/2022]
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Gourraud PA, Harbo HF, Hauser SL, Baranzini SE. The genetics of multiple sclerosis: an up-to-date review. Immunol Rev 2012. [PMID: 22725956 DOI: 10.1111/j.1600-065x.2012.01134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Multiple sclerosis (MS) is a prevalent inflammatory disease of the central nervous system that often leads to disability in young adults. Treatment options are limited and often only partly effective. The disease is likely caused by a complex interaction between multiple genes and environmental factors, leading to inflammatory-mediated central nervous system deterioration. A series of genomic studies have confirmed a central role for the immune system in the development of MS, including genetic association studies that have now dramatically expanded the roster of MS susceptibility genes beyond the longstanding human leukocyte antigen (HLA) association in MS first identified nearly 40 years ago. Advances in technology together with novel models for collaboration across research groups have enabled the discovery of more than 50 non-HLA genetic risk factors associated with MS. However, with a large proportion of the disease heritability still unaccounted for, current studies are now geared towards identification of causal alleles, associated pathways, epigenetic mechanisms, and gene-environment interactions. This article reviews recent efforts in addressing the genetics of MS and the challenges posed by an ever increasing amount of analyzable data, which is spearheading development of novel statistical methods necessary to cope with such complexity.
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Affiliation(s)
- Pierre-Antoine Gourraud
- Department of Neurology, University of California San Francisco, San Francisco, CA 94143-0435, USA
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42
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Abstract
Multiple sclerosis (MS) is a prevalent inflammatory disease of the central nervous system that often leads to disability in young adults. Treatment options are limited and often only partly effective. The disease is likely caused by a complex interaction between multiple genes and environmental factors, leading to inflammatory-mediated central nervous system deterioration. A series of genomic studies have confirmed a central role for the immune system in the development of MS, including genetic association studies that have now dramatically expanded the roster of MS susceptibility genes beyond the longstanding human leukocyte antigen (HLA) association in MS first identified nearly 40 years ago. Advances in technology together with novel models for collaboration across research groups have enabled the discovery of more than 50 non-HLA genetic risk factors associated with MS. However, with a large proportion of the disease heritability still unaccounted for, current studies are now geared towards identification of causal alleles, associated pathways, epigenetic mechanisms, and gene-environment interactions. This article reviews recent efforts in addressing the genetics of MS and the challenges posed by an ever increasing amount of analyzable data, which is spearheading development of novel statistical methods necessary to cope with such complexity.
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Affiliation(s)
- Pierre-Antoine Gourraud
- Department of Neurology, University of California San Francisco. 513 Parnassus Ave. Room S-256. San Francisco, CA. 94143-0435’
| | - Hanne F. Harbo
- Department of Neurology, University of California San Francisco. 513 Parnassus Ave. Room S-256. San Francisco, CA. 94143-0435’
- Department of Neurology, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Stephen L. Hauser
- Department of Neurology, University of California San Francisco. 513 Parnassus Ave. Room S-256. San Francisco, CA. 94143-0435’
| | - Sergio E. Baranzini
- Department of Neurology, University of California San Francisco. 513 Parnassus Ave. Room S-256. San Francisco, CA. 94143-0435’
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Kaur G, Trowsdale J, Fugger L. Natural killer cells and their receptors in multiple sclerosis. ACTA ACUST UNITED AC 2012; 136:2657-76. [PMID: 22734127 DOI: 10.1093/brain/aws159] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The immune system has crucial roles in the pathogenesis of multiple sclerosis. While the adaptive immune cell subsets, T and B cells, have been the main focus of immunological research in multiple sclerosis, it is now important to realize that the innate immune system also has a key involvement in regulating autoimmune responses in the central nervous system. Natural killer cells are innate lymphocytes that play vital roles in a diverse range of infections. There is evidence that they influence a number of autoimmune conditions. Recent studies in multiple sclerosis and its murine model, experimental autoimmune encephalomyelitis, are starting to provide some understanding of the role of natural killer cells in regulating inflammation in the central nervous system. Natural killer cells express a diverse range of polymorphic cell surface receptors, which interact with polymorphic ligands; this interaction controls the function and the activation status of the natural killer cell. In this review, we discuss evidence for the role of natural killer cells in multiple sclerosis and experimental autoimmune encephalomyelitis. We consider how a change in the balance of signals received by the natural killer cell influences its involvement in the ensuing immune response, in relation to multiple sclerosis.
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Affiliation(s)
- Gurman Kaur
- MRC Human Immunology Unit, Nuffield Department of Medicine, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
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Link J, Kockum I, Lorentzen AR, Lie BA, Celius EG, Westerlind H, Schaffer M, Alfredsson L, Olsson T, Brynedal B, Harbo HF, Hillert J. Importance of human leukocyte antigen (HLA) class I and II alleles on the risk of multiple sclerosis. PLoS One 2012; 7:e36779. [PMID: 22586495 PMCID: PMC3346735 DOI: 10.1371/journal.pone.0036779] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Accepted: 04/06/2012] [Indexed: 12/17/2022] Open
Abstract
Multiple sclerosis (MS) is a complex disease of the central nervous system of unknown etiology. The human leukocyte antigen (HLA) locus on chromosome 6 confers a considerable part of the susceptibility to MS, and the most important factor is the class II allele HLA-DRB1*15:01. In addition, we and others have previously established a protective effect of HLA-A*02. Here, we genotyped 1,784 patients and 1,660 healthy controls from Scandinavia for the HLA-A, HLA-B, HLA-C and HLA-DRB1 genes and investigated their effects on MS risk by logistic regression. Several allele groups were found to exert effects independently of DRB1*15 and A*02, in particular DRB1*01 (OR = 0.82, p = 0.034) and B*12 (including B*44/45, OR = 0.76, p = 0.0028), confirming previous reports. Furthermore, we observed interaction between allele groups: DRB1*15 and DRB1*01 (multiplicative: OR = 0.54, p = 0.0041; additive: AP = 0.47, p = 4 × 10(-06)), DRB1*15 and C*12 (multiplicative: OR = 0.37, p = 0.00035; additive: AP = 0.58, p = 2.6 × 10(-05)), indicating that the effect size of these allele groups varies when taking DRB1*15 into account. Analysis of inferred haplotypes showed that almost all DRB1*15 bearing haplotypes were risk haplotypes, and that all A*02 bearing haplotypes were protective as long as they did not carry DRB1*15. In contrast, we found one class I haplotype, carrying A*02-C*05-B*12, which abolished the risk of DRB1*15. In conclusion, these results confirms a complex role of HLA class I and II genes that goes beyond DRB1*15 and A*02, in particular by including all three classical HLA class I genes as well as functional interactions between DRB1*15 and several alleles of DRB1 and class I genes.
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Affiliation(s)
- Jenny Link
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
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46
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Association between HLA class I and class II alleles and the outcome of West Nile virus infection: an exploratory study. PLoS One 2011; 6:e22948. [PMID: 21829673 PMCID: PMC3148246 DOI: 10.1371/journal.pone.0022948] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Accepted: 07/01/2011] [Indexed: 01/22/2023] Open
Abstract
Background West Nile virus (WNV) infection is asymptomatic in most individuals, with a minority developing symptoms ranging from WNV fever to serious neuroinvasive disease. This study investigated the impact of host HLA on the outcome of WNV disease. Methods A cohort of 210 non-Hispanic mostly white WNV+ subjects from Canada and the U.S. were typed for HLA-A, B, C, DP, DQ, and DR. The study subjects were divided into three WNV infection outcome groups: asymptomatic (AS), symptomatic (S), and neuroinvasive disease (ND). Allele frequency distribution was compared pair-wise between the AS, S, and ND groups using χ2 and Fisher's exact tests and P values were corrected for multiple comparisons (Pc). Allele frequencies were compared between the groups and the North American population (NA) used as a control group. Logistic regression analysis was used to evaluate the potential synergistic effect of age and HLA allele phenotype on disease outcome. Results The alleles HLA-A*68, C*08 and DQB*05 were more frequently associated with severe outcomes (ND vs. AS, PA*68 = 0.013/Pc = 0.26, PC*08 = 0.0075/Pc = 0.064, and PDQB1*05 = 0.029/Pc = 0.68), However the apparent DQB1*05 association was driven by age. The alleles HLA-B*40 and C*03 were more frequently associated with asymptomatic outcome (AS vs. S, PB*40 = 0.021/Pc = 0.58 and AS vs. ND PC*03 = 0.039/Pc = 0.64) and their frequencies were lower within WNV+ subjects with neuroinvasive disease than within the North American population (NA vs. S, PB*40 = 0.029 and NA vs. ND, PC*03 = 0.032). Conclusions Host HLA may be associated with the outcome of WNV disease; HLA-A*68 and C*08 might function as “susceptible” alleles, whereas HLA-B*40 and C*03 might function as “protective” alleles.
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Brynedal B, Hillert J. Entering a new phase of multiple sclerosis genetic epidemiology. FUTURE NEUROLOGY 2011. [DOI: 10.2217/fnl.11.32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multiple sclerosis (MS) is a complex disease, where multiple genetic variants have been found to influence the risk of development. The evidence for environmental-attributable risk is also strong, indicating an interaction of risk factors leading to the development of disease in the individual. An importance of genetic variation within the human leukocyte antigen (HLA) region has been known for almost 40 years, but the search for additional variants connected to susceptibility has been long and largely fruitless. Joint efforts of the MS research community in collecting and sharing results from genetic case control cohorts, together with the technical development, eventually lead to the identification of multiple risk factors for MS as in other complex diseases. The list of identified genetic variants associated with disease is increasingly growing and some leads for functional mechanisms are emerging. Many of the identified regions also harbor associations with other immune-mediated diseases, suggesting common etiology across these various diseases. The great challenge in front of us now is to translate these point-wise indications of genetic effects to functional understanding of how disease develops.
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Affiliation(s)
- Boel Brynedal
- Department of Neurology, Yale Medical School, New Haven, CT, USA
- Medical & Population Genetics, The Broad Institute, Cambridge, MA, USA
| | - Jan Hillert
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
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Horakova D, Zivadinov R, Weinstock-Guttman B, Havrdova E, Tamaño-Blanco M, Tyblova M, Hussein S, Bergsland N, Willis L, Krasensky J, Vaneckova M, Seidl Z, Lelkova P, Ramanathan M. HLA DRB1*1501 is only modestly associated with lesion burden at the first demyelinating event. J Neuroimmunol 2011; 236:76-80. [DOI: 10.1016/j.jneuroim.2011.04.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2011] [Revised: 04/19/2011] [Accepted: 04/24/2011] [Indexed: 01/02/2023]
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Wucherpfennig KW, Sethi D. T cell receptor recognition of self and foreign antigens in the induction of autoimmunity. Semin Immunol 2011; 23:84-91. [PMID: 21306912 DOI: 10.1016/j.smim.2011.01.007] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2010] [Accepted: 01/10/2011] [Indexed: 10/18/2022]
Abstract
The major histocompatibility complex (MHC) on human chromosome 6 represents the most important genetic locus for a number of common human autoimmune diseases. Specific alleles that differ from closely related alleles by only one or a few amino acids in the peptide binding groove are frequently strongly associated with disease susceptibility, raising the important question of which peptide presentation events are critical in disease initiation and progression. This review will cover a number of topics pertinent to this fundamental question, including MHC linked disease susceptibility to autoimmune diseases, molecular mechanisms for the role of MHC molecules in autoimmune diseases as well as the recognition of self and microbial peptides by self-reactive T cell receptors (TCRs).
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Affiliation(s)
- Kai W Wucherpfennig
- Department of Cancer Immunology & AIDS, Dana-Farber Cancer Institute, Boston, MA 02115, USA.
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50
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Sombekke MH, Vellinga MM, Uitdehaag BMJ, Barkhof F, Polman CH, Arteta D, Tejedor D, Martinez A, Crusius JBA, Peña AS, Geurts JJG, Vrenken H. Genetic correlations of brain lesion distribution in multiple sclerosis: an exploratory study. AJNR Am J Neuroradiol 2011; 32:695-703. [PMID: 21436341 DOI: 10.3174/ajnr.a2352] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE In MS, the total brain lesion volume and spatial distribution of lesions across the brain vary widely among individual patients. We hypothesized that spatial distribution may be partially driven by genetic predisposition, and we aimed to explore relations among candidate genes and the spatial distribution of white matter brain lesions in MS. MATERIAL AND METHODS Genotypes of 69 SNPs in 208 patients with MS were related to the spatial distribution of T2 brain lesions. Lesions were manually outlined on MR images, and binary lesion masks were produced and registered to a common space. With Randomise software, the lesion masks were related to genotype by using a voxelwise nonparametric GLM approach, followed by clusterwise analysis. We used a DNA chip with SNPs selected from the literature on MS susceptibility, severity, and phenotypes. RESULTS For 11 of these SNPs, 1 of the genotypes expressed significant clusters of increased or decreased lesion probability in varying, predominantly periventricular, brain regions. When we statistically controlled the voxelwise analyses for effects of total brain lesion volume, only 1 SNP remained significant: rs2227139, located within the MHC class II region. This SNP retained its periventricular cluster of significantly increased lesion probability for the heterozygote genotype. CONCLUSIONS Heterozygosity of rs2227139 (MHC class II region) is associated with increased right frontal periventricular lesion probability (P<.01). Ten other SNPs showed associations between genotype and spatial lesion distribution that are partly explained by total lesion volume.
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Affiliation(s)
- M H Sombekke
- VU University Medical Center, Department of Neurology, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands.
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