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Pelissier A, Laragione T, Gulko PS, Rodríguez Martínez M. Cell-Specific Gene Networks and Drivers in Rheumatoid Arthritis Synovial Tissues. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.12.28.573505. [PMID: 38234732 PMCID: PMC10793435 DOI: 10.1101/2023.12.28.573505] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Rheumatoid arthritis (RA) is a common autoimmune and inflammatory disease characterized by inflammation and hyperplasia of the synovial tissues. RA pathogenesis involves multiple cell types, genes, transcription factors (TFs) and networks. Yet, little is known about the TFs, and key drivers and networks regulating cell function and disease at the synovial tissue level, which is the site of disease. In the present study, we used available RNA-seq databases generated from synovial tissues and developed a novel approach to elucidate cell type-specific regulatory networks on synovial tissue genes in RA. We leverage established computational methodologies to infer sample-specific gene regulatory networks and applied statistical methods to compare network properties across phenotypic groups (RA versus osteoarthritis). We developed computational approaches to rank TFs based on their contribution to the observed phenotypic differences between RA and controls across different cell types. We identified 18,16,19,11 key regulators of fibroblast-like synoviocyte (FLS), T cells, B cells, and monocyte signatures and networks, respectively, in RA synovial tissues. Interestingly, FLS and B cells were driven by multiple independent co-regulatory TF clusters that included MITF, HLX, BACH1 (FLS) and KLF13, FOSB, FOSL1 (synovial B cells). However, monocytes were collectively governed by a single cluster of TF drivers, responsible for the main phenotypic differences between RA and controls, which included RFX5, IRF9, CREB5. Among several cell subset and pathway changes, we also detected reduced presence of NKT cell and eosinophils in RA synovial tissues. Overall, our novel approach identified new and previously unsuspected KDG, TF and networks and should help better understanding individual cell regulation and co-regulatory networks in RA pathogenesis, as well as potentially generate new targets for treatment.
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Affiliation(s)
- Aurelien Pelissier
- IBM Research Europe, 8803 Rüschlikon, Switzerland
- Department of Biosystems Science and Engineering, ETH Zurich, 4058 Basel, Switzerland
- Currently at Institute of Computational Life Sciences, ZHAW, 8400 Winterthur, Switzerland
| | - Teresina Laragione
- Division of Rheumatology, Icahn School of Medicine at Mount Sinai, 10029 New York, United States
| | - Percio S. Gulko
- Division of Rheumatology, Icahn School of Medicine at Mount Sinai, 10029 New York, United States
| | - María Rodríguez Martínez
- IBM Research Europe, 8803 Rüschlikon, Switzerland
- Currently at Yale School of Medicine, 06510 New Haven, United States
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Medeiros FS, da Silva MC, da Silva NCH, Gomes TT, Gomes RG, Paiva LA, dos Santos Gomes FO, Peixoto CA, Rygaard MCV, Welkovic S, Menezes MLB, Donadi EA, Lucena-Silva N. The antigen processing-associated transporter gene polymorphism: Role on gene and protein expression in HPV-infected pre-cancerous cervical lesion. Front Cell Infect Microbiol 2022; 12:979800. [PMID: 36619767 PMCID: PMC9811671 DOI: 10.3389/fcimb.2022.979800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 12/05/2022] [Indexed: 12/24/2022] Open
Abstract
Human papillomavirus (HPV) is the major pathogen for cervical lesions. The evasion mechanism of the immune response and persistence of HPV infection can be influenced by polymorphisms (SNPs) in genes associated with transporter associated with antigen processing (TAP), which may change the peptide binding affinity or the TAP expression impacting the efficiency of peptide transport in the secretory pathway, and the presentation of peptides to cytotoxic T lymphocytes. This study aimed to evaluate the role of the TAP1 and TAP2 polymorphisms, TAP1, and TAP2 genes expressions, and protein levels in cervical cells presenting different degrees of pre-cancerous lesions in 296 immunocompetent women infected or not by HPV. TAP SNPs were genotyped by Sanger sequencing, and gene expression by real-time PCR. Aneuploidy was determined by DNA index using flow cytometry. TAP-1 and TAP-2 tissue expressions were evaluated by immunohistochemistry. The Asp697Gly SNP of TAP1 presented a risk for cellular aneuploidy (P=0.0244). HPV+ women had higher TAP-2 mRNA (P=0.0212) and protein (P<0.0001) levels. The TAP2D and TAP2E haplotypes were associated with the risk for aneuploidy and pre-cancerous lesions. In conclusion, nucleotide variability at the peptide binding region of peptide transporter genes, particularly of the TAP2 gene, may influence the HPV-peptide transportation from the cytosol to the endoplasmic reticulum, increasing the susceptibility to the development of high-grade cervical lesions.
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Affiliation(s)
- Fernanda Silva Medeiros
- Laboratory of Immunogenetics, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Recife, Brazil
| | - Mauro César da Silva
- Laboratory of Immunogenetics, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Recife, Brazil
| | | | - Thailany Thays Gomes
- Laboratory of Immunogenetics, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Recife, Brazil
| | - Renan Garcia Gomes
- Laboratory of Molecular Biology, Institute of Integral Medicine Professor Fernando Figueira (IMIP) Hospital, Pediatric Oncology Service, Recife, Brazil
| | | | | | - Christina Alves Peixoto
- Laboratory of Ultrastructure, Department of Entomology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Recife, Brazil
| | - Maria Carolina Valença Rygaard
- Laboratory of Molecular Biology, Institute of Integral Medicine Professor Fernando Figueira (IMIP) Hospital, Pediatric Oncology Service, Recife, Brazil
| | - Stefan Welkovic
- Integrated Health Center Amaury de Medeiros (CISAM), University of Pernambuco, Recife, Brazil
| | | | - Eduardo Antônio Donadi
- Clinical Immunology Division, Department of Medicine, School of Medicine of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - Norma Lucena-Silva
- Laboratory of Immunogenetics, Department of Immunology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation, Recife, Brazil,Laboratory of Molecular Biology, Institute of Integral Medicine Professor Fernando Figueira (IMIP) Hospital, Pediatric Oncology Service, Recife, Brazil,*Correspondence: Norma Lucena-Silva, ;
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Association between TAP gene polymorphisms and tuberculosis susceptibility in a Han Chinese population in Guangdong. Mol Genet Genomics 2022; 297:779-790. [PMID: 35325275 PMCID: PMC8943507 DOI: 10.1007/s00438-022-01885-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 03/08/2022] [Indexed: 12/02/2022]
Abstract
Tuberculosis (TB) is an important public health problem. Studies indicated that TAP plays a key role in the presentation and transport of antigenic peptides during anti-M.tb infection. Given the important biological role of the TAP gene involved in anti-M.tb infection, a family-based case–control study including 133 tuberculosis patients, 107 healthy household contacts, and 173 healthy controls was conducted to assess the association between TAP gene polymorphisms and TB susceptibility. The basic information of subjects and their blood samples were collected. Four SNPs including rs1135216, rs1057141, rs241447, and rs3819721 were genotyped by polymerase chain reaction-restriction fragment length polymorphism (PCR–RFLP). Our results suggested that BMI, residence, bedroom crowding, indoor humidity, fitness activities, history of smoking, and TB exposure history were associated with the occurrence of tuberculosis (P < 0.05). A significant association was observed between the TAP1 rs1135216 CT/CC genotype and increased TB risk, and the ORs were 2.56 (95% CI 1.31–4.99) and 6.73 (95% CI 1.33–34.02), respectively. TAP2 rs3819721 GG genotype carriers also showed an increased risk of TB when compared TB patients to healthy household contacts. Haplotype analysis revealed that the haplotype CT at rs1057141 and rs1135216 (OR = 11.34, 95% CI 1.49–86.56; OR = 7.45, 95% CI 1.43–38.76), as well as TA at rs241447 and rs3819721 (OR = 2.20, 95% CI 1.07–4.56) had a significantly increased risk of TB. The genetic risk scores (GRS) analysis of the four loci indicated that the risk of tuberculosis increased with increasing GRS scores in TB vs HHC (Ptrend = 0.010) and in TB vs HC (Ptrend = 0.001). In conclusion, our findings suggested that the SNPs of rs1135216 and rs3819721 were associated with TB susceptibility among the tuberculosis-prone families in the Chinese Han population and the risk of developing tuberculosis increases with the number of risk alleles, which could help identify high-risk groups in time and take scientific preventive measures. Further cohort studies with large samples are needed to validate the role of TAP gene variants on TB susceptibility.
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Rajabi F, Abdollahimajd F, Jabalameli N, Nassiri Kashani M, Firooz A. The Immunogenetics of Alopecia areata. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1367:19-59. [DOI: 10.1007/978-3-030-92616-8_2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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The Immunogenetics of Systemic Sclerosis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1367:259-298. [DOI: 10.1007/978-3-030-92616-8_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Qian Y, Wang G, Xue F, Chen L, Wang Y, Tang L, Yang H. Genetic association between TAP1 and TAP2 polymorphisms and ankylosing spondylitis: a systematic review and meta-analysis. Inflamm Res 2017; 66:653-661. [PMID: 28405734 DOI: 10.1007/s00011-017-1047-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 03/29/2017] [Accepted: 04/06/2017] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVES Ankylosing spondylitis (AS) is a chronic inflammatory joint disease. The transporter associated with antigen processing (TAP) has been identified to play an important role in immune response as well as the HLA-associated diseases. The aim of our meta-analysis was to investigate the contribution of TAP (TAP1 and TAP2) polymorphisms to the risk of AS. METHODS Meta-analyses were performed between 2 polymorphisms in TAP1 (TAP1-333, -637) and 3 polymorphisms in TAP2 (TAP2-379, -565, and -665) and AS. RESULTS The meta-analyses were involved with 6 studies with 415 cases and 659 controls. Significant association was found between TAP1-333Val, TAP1-637Gly, and TAP2-565Thr and AS compared with combined control group (TAP1-333Val: p = 0.009, OR = 1.40, 95% CI 1.09-1.80; TAP1-637Gly: p = 0.002, OR = 1.48, 95% CI 1.15-1.91; p = 0.03, OR = 1.38, 95% CI 1.04-1.84). Subgroup analysis shown that significant association was only found in AS when compared with HLA-B27-negative controls (TAP1-333Val: p = 0.004, OR = 1.53, 95% CI 1.14-2.06; TAP1-637Gly: p = 0.004, OR = 1.52, 95% CI 1.15-2.02; p = 0.02, OR = 1.56, 95% CI 1.09-2.24), but not in AS when compared with HLA-B27-positive controls (p > 0.05). Moreover, no significant associations were found between haplotypes in TAP1 and TAP2 in both the combined and the subgroup analyses (p > 0.05). CONCLUSIONS TAP1-333Val, TAP1-637Gly, and TAP2-565Thr were likely to be associated with AS.
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Affiliation(s)
- Yufeng Qian
- Department of Orthopedics, The First Affiliated Hospital of Suzhou University, Suzhou, 215000, People's Republic of China.,Department of Orthopedics, Changshu First People's Hospital, Changshu, People's Republic of China
| | - Genlin Wang
- Department of Orthopedics, The First Affiliated Hospital of Suzhou University, Suzhou, 215000, People's Republic of China
| | - Feng Xue
- Department of Orthopedics, Changshu First People's Hospital, Changshu, People's Republic of China
| | - Lianghui Chen
- Department of Human Anatomy, Histology and Embryology, Institute of Neuroscience, Changsha Medical University, Changsha, People's Republic of China
| | - Yan Wang
- Department of Human Anatomy, Histology and Embryology, Institute of Neuroscience, Changsha Medical University, Changsha, People's Republic of China
| | - Liang Tang
- Department of Human Anatomy, Histology and Embryology, Institute of Neuroscience, Changsha Medical University, Changsha, People's Republic of China
| | - Huilin Yang
- Department of Orthopedics, The First Affiliated Hospital of Suzhou University, Suzhou, 215000, People's Republic of China.
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Schultheiss UT, Teumer A, Medici M, Li Y, Daya N, Chaker L, Homuth G, Uitterlinden AG, Nauck M, Hofman A, Selvin E, Völzke H, Peeters RP, Köttgen A. A genetic risk score for thyroid peroxidase antibodies associates with clinical thyroid disease in community-based populations. J Clin Endocrinol Metab 2015; 100:E799-807. [PMID: 25719932 PMCID: PMC4422885 DOI: 10.1210/jc.2014-4352] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
CONTEXT Antibodies against thyroid peroxidase (TPOAbs) are detected in 90% of all patients with Hashimoto thyroiditis, the most common cause of hypothyroidism. Hypothyroidism is associated with a range of adverse outcomes. The current knowledge of its genetic underpinnings is limited. OBJECTIVE The purpose of this study was to identify novel genetic variants associated with TPOAb concentrations and positivity using genome-wide association data and to characterize their association with thyroid function and disease. DESIGN, SETTING, AND PARTICIPANTS We studied European ancestry participants of 3 independent prospective population-based studies: Atherosclerosis Risk In Communities study (n = 7524), Study of Health in Pomerania (n = 3803), and Study of Health in Pomerania-TREND (n = 887). EXPOSURE Single nucleotide polymorphisms (SNPs), individually and combined into a genetic risk score (GRS), were examined. MAIN OUTCOMES The main outcomes were TPOAb concentrations and positivity, thyroid hormone concentrations (TSH, free T4), and clinical thyroid diseases (subclinical and overt hypothyroidism and goiter). RESULTS Significantly associated single nucleotide polymorphisms (P < 5 · 10(-8)) mapped into 4 genomic regions not previously implicated for TPOAbs (RERE, extended HLA region) and into 5 previously described loci. A higher Genetic Risk Score (GRS) based on these 9 SNPs showed strong and graded associations with higher TPOAb, TSH, and lower free T4 concentrations (P < .001). Compared with individuals in the lowest GRS quartile, those in the highest quartile had 1.80-fold higher odds of subclinical hypothyroidism (95% confidence interval, 1.27-2.55) and 1.89-fold higher odds of overt hypothyroidism (95% confidence interval, 1.24-2.87). CONCLUSION The identification of 4 novel genetic loci associated with TPOAb concentrations and positivity gives further insight into the genetic underpinnings of hypothyroidism. A GRS showed strong and graded associations with markers of thyroid function and disease in independent population-based studies.
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Affiliation(s)
- Ulla T Schultheiss
- Renal Division (U.T.S., Y.L., A.K.), Department of Medicine IV, Medical Center, University of Freiburg, 79106 Freiburg, Germany; Department of Internal Medicine and Rotterdam Thyroid Center (M.M., L.C., A.G.U., R.P.P.) and Department of Epidemiology (L.C., A.H.), Erasmus Medical Center, 3015 GE Rotterdam, The Netherlands; Institute for Community Medicine (A.T., H.V.), Interfaculty Institute for Genetics and Functional Genomics (G.H.), and Institute of Clinical Chemistry and Laboratory Medicine (M.N.), University Medicine Greifswald, 17475 Greifswald, Germany; and Department of Epidemiology (N.D., E.S., A.K.), Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205
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Dai D, Chen Y, Ru P, Zhou X, Tao J, Ye H, Hong Q, Tang L, Pan G, Lin D, Gong Q, Lv Y, Xu L, Duan S. Significant association between TAP2 polymorphisms and rheumatoid arthritis: a meta-analysis. Diagn Pathol 2014; 9:129. [PMID: 24972609 PMCID: PMC4090395 DOI: 10.1186/1746-1596-9-129] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 06/23/2014] [Indexed: 12/19/2022] Open
Abstract
Background Rheumatoid arthritis (RA) is a severe chronic immune mediated inflammatory disease that has been shown to be associated with human leukocyte antigen (HLA) loci. The transporter associated with antigen processing 2 (TAP2) has been identified to play an important role in the HLA-associated diseases and immune response. The goal of our meta-analysis was to summarize the contribution of TAP2 polymorphisms to the risk of RA. Methods Meta-analyses were performed between RA and 3 TAP2 coding polymorphisms that comprised TAP2-379Ile > Val (rs1800454), TAP2-565Ala > Thr (rs2228396) and TAP2-665Thr > Ala (rs241447). The meta-analyses were involved with 9 studies (24 individual studies) among 973 cases and 965 controls. Results Meta-analyses showed that TAP2-379Ile allele was significantly associated with an increased risk of RA (p = 0.0002, odds ratio (OR) = 1.44, 95% confidence interval (CI) = 1.18-1.74). This association was further shown only in the dominant model (p = 0.006, OR = 1.59, 95% CI = 1.14-2.22). Subgroup analyses by ethnicity revealed that the association of TAP2-379Ile was significant in Asians (p = 0.03, OR = 1.38, 95% CI = 1.04-1.83). In addition, another significant association of TAP2-565Thr allele with RA was observed in Europeans (p = 0.002, OR = 1.62, 95% CI = 1.20-2.20). Conclusions Our meta-analyses suggested that TAP2-379Ile allele was significantly associated with a 59% increased risk in the dominant effect model. Subgroup analyses by ethnicity showed that TAP2-379-Ile increased the risk of RA by 38% in Asians and TAP2-565Thr increased the risk of RA by 38% in Europeans. Virtual Slides The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/2097080313124700
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Shiwei Duan
- Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, China.
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Hasham A, Zhang W, Lotay V, Haggerty S, Stefan M, Concepcion E, Dieterich DT, Tomer Y. Genetic analysis of interferon induced thyroiditis (IIT): evidence for a key role for MHC and apoptosis related genes and pathways. J Autoimmun 2013; 44:61-70. [PMID: 23683877 DOI: 10.1016/j.jaut.2013.04.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 03/22/2013] [Accepted: 04/01/2013] [Indexed: 12/18/2022]
Abstract
Autoimmune thyroid diseases (AITD) have become increasingly recognized as a complication of interferon-alpha (IFNα) therapy in patients with chronic Hepatitis C virus (HCV) infection. Interferon-induced thyroiditis (IIT) can manifest as clinical thyroiditis in approximately 15% of HCV patients receiving IFNα and subclinical thyroiditis in up to 40% of patients, possibly resulting in either dose reduction or discontinuation of IFNα treatment. However, the exact mechanisms that lead to the development of IIT are unknown and may include IFNα-mediated immune-recruitment as well as direct toxic effects on thyroid follicular cells. We hypothesized that IIT develops in genetically predisposed individuals whose threshold for developing thyroiditis is lowered by IFNα. Therefore, our aim was to identify the susceptibility genes for IIT. We used a genomic convergence approach combining genetic association data with transcriptome analysis of genes upregulated by IFNα. Integrating results of genetic association, transcriptome data, pathway, and haplotype analyses enabled the identification of 3 putative loci, SP100/110/140 (2q37.1), HLA (6p21.3), and TAP1 (6p21.3) that may be involved in the pathogenesis of IIT. Immune-regulation and apoptosis emerged as the predominant mechanisms underlying the etiology of IIT.
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Affiliation(s)
- Alia Hasham
- Division of Endocrinology, Department of Medicine, Mount Sinai School of Medicine, New York, NY, USA
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Sunder SR, Hanumanth SR, Gaddam S, Jonnalagada S, Valluri VL. Association of TAP 1 and 2 gene polymorphisms with human immunodeficiency virus-tuberculosis co-infection. Hum Immunol 2011; 72:908-11. [PMID: 21843574 DOI: 10.1016/j.humimm.2011.07.304] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Revised: 07/11/2011] [Accepted: 07/25/2011] [Indexed: 11/17/2022]
Abstract
Major histocompatibility complex (MHC) class I binding peptides are carried from cytosol to the lumen of the endoplasmic reticulum (ER) by transporter associated with antigen processing (TAP), an integral ER membrane protein composed of two subunits, TAP1 and TAP2. Polymorphism in TAP genes may influence these proteins further affecting the antigen peptide presentation, indirectly resulting in the viral escape mechanism from cell-mediated immunity in human immunodeficiency virus (HIV). Our aim was to study the influence of these polymorphism in study groups with HIV-tuberculosis (TB) (n = 110), TB (n = 105), and HIV (n = 130) compared with healthy controls (n = 183), using the tetraprimer amplification refractory mutation system (ARMS)-polymerase chain reaction method. Our results demonstrated that the GG genotype at TAP1 position 333 and GA genotype at TAP1 position 637 were positively associated with HIV-TB co-infection and these genotypes may act as a risk factor for developing TB co-infection in HIV-positive individuals.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 2
- ATP Binding Cassette Transporter, Subfamily B, Member 3
- ATP-Binding Cassette Transporters/genetics
- ATP-Binding Cassette Transporters/immunology
- Alleles
- Case-Control Studies
- Coinfection
- Endoplasmic Reticulum/genetics
- Endoplasmic Reticulum/immunology
- Endoplasmic Reticulum/metabolism
- Gene Frequency
- Genetic Predisposition to Disease
- Genotype
- HIV/immunology
- HIV Infections/epidemiology
- HIV Infections/genetics
- HIV Infections/immunology
- HIV Infections/metabolism
- Haplotypes
- Humans
- Immune Evasion
- Immunity, Cellular/genetics
- Immunity, Cellular/immunology
- India/epidemiology
- Leukocytes/chemistry
- Leukocytes/immunology
- Mycobacterium tuberculosis/immunology
- Polymerase Chain Reaction
- Polymorphism, Genetic
- Risk Factors
- Tuberculosis, Pulmonary/epidemiology
- Tuberculosis, Pulmonary/genetics
- Tuberculosis, Pulmonary/immunology
- Tuberculosis, Pulmonary/metabolism
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Zhang M, Lin Y, Wang L, Pungpapong V, Fleet JC, Zhang D. Case-control genome-wide association study of rheumatoid arthritis from Genetic Analysis Workshop 16 using penalized orthogonal-components regression-linear discriminant analysis. BMC Proc 2009; 3 Suppl 7:S17. [PMID: 20018006 PMCID: PMC2795913 DOI: 10.1186/1753-6561-3-s7-s17] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
Abstract
Currently, genome-wide association studies (GWAS) are conducted by collecting a massive number of SNPs (i.e., large p) for a relatively small number of individuals (i.e., small n) and associations are made between clinical phenotypes and genetic variation one single-nucleotide polymorphism (SNP) at a time. Univariate association approaches like this ignore the linkage disequilibrium between SNPs in regions of low recombination. This results in a low reliability of candidate gene identification. Here we propose to improve the case-control GWAS approach by implementing linear discriminant analysis (LDA) through a penalized orthogonal-components regression (POCRE), a newly developed variable selection method for large p small n data. The proposed POCRE-LDA method was applied to the Genetic Analysis Workshop 16 case-control data for rheumatoid arthritis (RA). In addition to the two regions on chromosomes 6 and 9 previously associated with RA by GWAS, we identified SNPs on chromosomes 10 and 18 as potential candidates for further investigation.
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Affiliation(s)
- Min Zhang
- Department of Statistics, Purdue University, 150 North University Street, West Lafayette, IN 47907, USA.
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MHC loci affecting cervical cancer risk: distinguishing the effects of HLA-DQB1 and non-HLA genes TNF, LTA, TAP1 and TAP2. Genes Immun 2008; 9:613-23. [DOI: 10.1038/gene.2008.58] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Shen C, Guo Z, Wu M, Hu X, Yang G, Yu R, Shen H, Xu Y, Yao C. Association study between hypertension and A/G polymorphism at codon 637 of the transporter associated with antigen processing 1 gene. Hypertens Res 2007; 30:683-90. [PMID: 17917315 DOI: 10.1291/hypres.30.683] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
UNLABELLED To explore the effect of A/G polymorphisms at codon 637 of the transporter associated with antigen processing 1 (TAP1) gene on the risk of hypertension. A case-control study of epidemiology was conducted. The case group included 277 community-based patients (136 males and 141 females; mean age 58.7+/-12.1 years) diagnosed with hypertension, and the control group consisted of 227 healthy subjects (95 males and 132 females; mean age 51.29+/-12.16 years) from the same community. The A/G polymorphisms at codon 637 of the TAP1 gene was examined by the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method with genomic DNA. The effect of A/G polymorphisms at codon 637 of the TAP1 gene on hypertension was analyzed by using multivariate unconditional logistic regression models. The contribution of TAP1 637 A/G allele frequencies of the control group was consistent with that predicted by the Hardy-Weinberg equilibrium test (x2=230, p=0.632). There was a significant difference in the frequency of the A/G polymorphisms at codon 637 of the TAP1 gene between hypertensive patients (74.4/25.6%) and controls (82.4%/17.6%), x2=9.324, p=0.002. Genotype model (AA-AG-GG) analysis showed that there was a significant difference in the frequency of the recessive genotype between cases and controls (AA/AG vs. GG: odds ratio [OR]=3.046, 95% confidence interval [CI]=1.138-8.153) after adjustment for the covariates of age, serum total cholesterol, triglycerides, body mass index (BMI) and smoking. But there were no significant differences in the frequency of the genotype for the dominant model (AA vs. AG/GG p=0.293) or additive model (AA vs. AG vs. GG: p=0.081) after adjustment. One-way ANOVA analysis showed that the systolic blood pressure, diastolic blood pressure, and BMI levels of the GG genotype were significantly higher than those of the AA or AG genotypes. In conclusion, our findings suggest that the A/G polymorphisms at codon 637 of the TAP1 gene contributes to the risk of hypertension, possibly via the increases in blood pressure and BMI.
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Affiliation(s)
- Chong Shen
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, PR China.
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Kim KR, Cho SH, Choi SJ, Jeong JH, Lee SH, Park CW, Tae K. TAP1 and TAP2 gene polymorphisms in Korean patients with allergic rhinitis. J Korean Med Sci 2007; 22:825-31. [PMID: 17982230 PMCID: PMC2693848 DOI: 10.3346/jkms.2007.22.5.825] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Antigen peptides are actively transported across the endoplasmic reticulum by the transporters associated with antigen presentation (TAP). TAP genes polymorphism could influence the selection process that determines which antigen peptides play a role in the pathogenesis of allergic rhinitis. The aim of this study was to investigate the association of TAP genes polymorphism with allergic rhinitis. TAP1 and TAP2 genotyping were performed on 110 allergic rhinitis patients and 107 healthy controls. TAP1 polymorphic residues at codons 333 and 637, and TAP2 polymorphic residues at codons 379, 565, 651, and 665 were analyzed by the amplification refractory mutation system-polymerase chain reaction (ARMS-PCR). Analysis of TAP1 gene polymorphism demonstrated decreased frequencies of Ile/Val genotype at codon 333, Asp/Gly genotype at codon 637, and haplotype A and B in allergic rhinitis patients when compared to controls (p<0.05). However, there was no significant difference in the genotype, phenotype, or allele frequencies at four TAP2 codons between controls and allergic rhinitis patients. In conclusion, TAP1 gene polymorphism may be an important factor contributing to the genetic susceptibility in the development of allergic rhinitis in the Korean population.
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Affiliation(s)
- Kyung Rae Kim
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Hanyang University, Seoul, Korea
| | - Seok Hyun Cho
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Hanyang University, Seoul, Korea
| | - Suk Joo Choi
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Hanyang University, Seoul, Korea
| | - Jin Hyeok Jeong
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Hanyang University, Seoul, Korea
| | - Seung Hwan Lee
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Hanyang University, Seoul, Korea
| | - Chul Won Park
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Hanyang University, Seoul, Korea
| | - Kyung Tae
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Hanyang University, Seoul, Korea
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15
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Slomov E, Loewenthal R, Korostishevsky M, Goldberg I, Brenner S, Gazit E. Pemphigus vulgaris is associated with the transporter associated with antigen processing (TAP) system. Hum Immunol 2006; 66:1213-22. [PMID: 16690408 DOI: 10.1016/j.humimm.2005.11.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2005] [Indexed: 01/29/2023]
Abstract
Pemphigus vulgaris (PV) is a human leukocute antigen (HLA) class II-associated autoimmune disease of the skin of unknown etiology. We recently described the association of pemphigus vulgaris with two clusters of microsatellite loci within the major histocompatibility complex region. One cluster includes the microsatellite marker TAP1CA, located in proximity to the transporter associated with antigen processing (TAP) genes. These genes are essential for class I antigen processing machinery and could be an additional set of genes involved in susceptibility to PV. The aim of this study was to investigate a possible association between TAP gene polymorphisms and PV. For this purpose we examined 37 unrelated Jewish Israeli patients with PV and compared them with 37 healthy Israeli Jewish HLA-matched controls. Significant differences were detected in TAP2 amino acid residues (p=0.001). Two PV TAP2 risk alleles were identified (TAP2*C and TAP2*D), the frequency of which was estimated to be 37.8% in the patients and 5.3 % in the controls. This association was found to be independent of HLA-DR. It is therefore likely that TAP2 genes are involved in susceptibility to development of PV.
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Affiliation(s)
- Elena Slomov
- Tissue Typing Laboratory, Sheba Medical Center, Ramat-Gan, and Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
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16
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Alvarado-Guerri R, Cabrera CM, Garrido F, López-Nevot MA. TAP1 and TAP2 polymorphisms and their linkage disequilibrium with HLA-DR, -DP, and -DQ in an eastern Andalusian population. Hum Immunol 2005; 66:921-30. [PMID: 16216677 DOI: 10.1016/j.humimm.2005.06.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2005] [Indexed: 11/20/2022]
Abstract
Transporter associated with antigen processing (TAP) molecules are involved in the processing of endogenous peptides that bind to major histocompatibility complex (MHC) class I molecules. The possible functional significance of TAP polymorphisms for antigenic peptide transport is an unresolved issue. Population genetics is a tool for investigating the evolutionary and functional significance of genetic polymorphisms. We studied 105 unrelated individuals from Eastern Andalusia in Southern Spain for TAP1 and TAP2 polymorphisms and to detect linkage disequilibrium between TAP1 and TAP2 and between TAP1/TAP2 and human lymphocyte antigen (HLA) DR, DP, and DQ genes. HLA-DR, -DQ, -DP, and TAP1 loci were genotyped with the polymerase chain reaction (PCR)-sequence-specific oligonucleotide method, and TAP2 genes were typed by using the amplification-refractory mutation system-PCR technique. The alleles TAP1*D (3.3%), TAP2*D (2.4%), and TAP2*E (2.9%) were present in the Eastern Andalusian population but not in the general Spanish population. No evidence of linkage disequilibrium was found between TAP1 and TAP2 or between the TAP genes and HLA-DR, -DP, and -DQ in the Eastern Andalusian population. These results are consistent with the absence of coevolution between TAP and MHC class II genes and the hypothesis of selective neutrality.
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Affiliation(s)
- Rocío Alvarado-Guerri
- Servicio de Análisis Clínicos e Inmunología, Hospital Universitario Virgen de las Nieves, Universidad de Granada, Granada, Spain
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17
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Yang T, Lapinski PE, Zhao H, Zhou Q, Zhang H, Raghavan M, Liu Y, Zheng P. A Rare Transporter Associated with Antigen Processing Polymorphism Overpresented in HLAlow Colon Cancer Reveals the Functional Significance of the Signature Domain in Antigen Processing. Clin Cancer Res 2005; 11:3614-23. [PMID: 15897556 DOI: 10.1158/1078-0432.ccr-04-1804] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Transporter associated with antigen processing (TAP), a member of the ATP-binding cassette transporter superfamily, is composed of two integral membrane proteins, TAP-1 and TAP-2. Each subunit has a C-terminal nucleotide-binding domain that binds and hydrolyzes ATP to energize peptide translocation across the endoplasmic reticulum membrane. A motif comprising the sequence LSGGQ (called the signature motif) and the amino acid that is immediately C-terminal to this motif are highly conserved in the nucleotide-binding domains of ATP-binding cassette transporters. To search for natural variants of TAP-1 with alterations in or near the signature motif, we sequenced the TAP-1 exon 10 amplified from 103 human colon cancer samples. We found a rare TAP-1 allele with an R>Q alteration at a residue immediately C-terminal to the signature motif (R648) that occurred 17.5 times more frequently in colon cancers with down-regulated surface class I MHC than those with normal MHC levels (P = 0.01). Functional analysis revealed that the Q648 variant had significantly reduced peptide translocation activity compared with TAP-1 (R648). In addition, we found that mutations S644R, G645R, G646S, and G646D interfered with TAP-1 activity. TAP-1 G646D, which showed the most severe defect, resided normally in the endoplasmic reticulum and associated with the peptide loading complex, but failed to transport peptide across the endoplasmic reticulum membrane. Thus, a TAP-1 polymorphism adjacent to the signature motif may be a contributing factor for MHC class I down-regulation in colon cancer. Given the widespread defects in DNA mismatch repair in colon cancer, mutations at or near the signature domain can potentially modulate antigen processing.
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Affiliation(s)
- Tianyu Yang
- Division of Cancer Immunology, Department of Pathology and Comprehensive Cancer Center, Graduate Program in Molecular, Cellular, and Developmental Biology, The Ohio State University, OncoImmune, Ltd., Columbus, Ohio, USA
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18
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Cesari M, Hoarau JJ, Caillens H, Robert C, Rouch C, Cadet F, Pabion M. Is TAP2*0102 allele involved in insulin-dependent diabetes mellitus (type 1) protection? Hum Immunol 2004; 65:783-93. [PMID: 15336779 DOI: 10.1016/j.humimm.2004.05.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2003] [Accepted: 05/27/2004] [Indexed: 11/19/2022]
Abstract
In this study, we have investigated the frequencies of TAP1 and TAP2 alleles in a group of 226 persons, living in La Reunion Island, consisting of 70 patients with insulin-dependent diabetes mellitus (IDDM) and most of their first degree relatives (i.e., 156 parents and full sibling subjects) and previously HLA DQB1, DQA1, and DRB1 genotyped. The population of this island is constituted by a particular structure of highly crossbreeding people. Interestingly, the new TAP2*0104 allele, previously discovered by our team in Reunion Island, was found to be increased in the IDDM population and the calculated HRR was relatively high (HRR = 3.3). This result seems to be due to a positive linkage disequilibrium between TAP2*0104 allele and the highly diabetogenous DQB1* 0201-DQA1* 0501-DRB1 0301 haplotype (HRR = 9), which suggests that TAP2*0104 cannot be considered as an additional predispositional factor, but more as a genetic susceptibility marker of IDDM. In addition, we show that minor alleles (TAP2D, *0102, *0103, *0104) are associated with a restricted number of HLA DQ-DR haplotypes and each of them exhibits a preferential linkage with one particular haplotype. In contrast with other alleles, and despite a HRR value close to 1, we show that TAP2*0102 allele contributes significantly to a drastic reduction of the diabetogenic effect of DQB1*0201-DQA1*0301.1-DRB*0701 haplotype. Indeed, this haplotype, which is usually preferentially transmitted to affected children, is dominantly transmitted to healthy children when it is associated with TAP2*0102. Therefore, this allele seems to contribute to genetic protection to IDDM.
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Affiliation(s)
- Maya Cesari
- Laboratoire de Biochimie et Génétique Moléculaire EA2526, Faculté des Sciences et Technologies, Université de la Réunion, La Réunion, France-DOM
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19
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Zhang S, Penfornis A, Harraga S, Chabod J, Beurton I, Bresson-Hadni S, Tiberghien P, Kern P, Vuitton DA. Polymorphisms of the TAP1 and TAP2 genes in human alveolar echinococcosis. EUROPEAN JOURNAL OF IMMUNOGENETICS : OFFICIAL JOURNAL OF THE BRITISH SOCIETY FOR HISTOCOMPATIBILITY AND IMMUNOGENETICS 2003; 30:133-9. [PMID: 12648282 DOI: 10.1046/j.1365-2370.2003.00375.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We postulated that TAP genes may influence the susceptibility of some individuals to Echinococcus multilocularis infection. Six coding region variants (codons 333 and 637 in TAP1, and 379, 565, 651 and 665 in TAP2) were typed in 94 patients and 100 controls. Thr/Thr homozygosity at TAP2/665 was more prevalent in patients than in controls [64% vs. 45%, respectively; odds ratio (OR) = 2.1 (95% confidence interval (CI) 1.1; 2.7)] and Thr/Ala heterozygozity was less prevalent (32% vs. 50%, respectively) (P = 0.014). Of the 38 patients with progressive lesions, 76% were Thr/Thr, as compared with 55% of patients without progressive lesions and 45% of controls (P = 0.058 and 0.02, respectively), independent of HLA status. To determine whether this association is functionally relevant, functional analyses and/or confirmation in distinct populations of patients with alveolar echinococcosis would be required.
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Affiliation(s)
- S Zhang
- WHO Collaborating Center for Prevention and Treatment of Human Echinococcosis, Health and Rural Enviroment, University of Franche-Comté EA2276, Besançon, France
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