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Wu X, Wang G, Zhang L, Xu H. Genetics of Ankylosing Spondylitis-Focusing on the Ethnic Difference Between East Asia and Europe. Front Genet 2021; 12:671682. [PMID: 34194471 PMCID: PMC8236852 DOI: 10.3389/fgene.2021.671682] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 05/04/2021] [Indexed: 01/07/2023] Open
Abstract
Ankylosing spondylitis (AS) is a common, highly heritable inflammatory arthritis affecting the mainly axial joints in both East Asia and Europe. To date, the pathogenesis of AS is still unknown, although we know that genetics play a vital role in it. The HLA-B27 allele is found in over 85% of AS patients. However, strong evidence suggests that other major histocompatibility complex (MHC) and non-MHC genes are also involved in the pathogenesis. In addition, current data showed that there were significant differences in both genomics and metagenomics among the different ethnic populations. The investigation of the key role of the microbiome in AS pathogenesis also highlighted the host–microbiome genetic interactions. Here, we systematically review current AS genetic research data and further compare genetic differences, especially between East Asian and European groups, which may highlight the challenge in future genetic studies.
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Affiliation(s)
- Xin Wu
- Department of Rheumatology and Immunology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Geng Wang
- Department of Rheumatology and Immunology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China.,The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Luding Zhang
- Department of Health Management, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Huji Xu
- Department of Rheumatology and Immunology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China.,Peking-Tsinghua Center for Life Sciences, Tsinghua University, Beijing, China.,School of Clinical Medicine, Tsinghua University, Beijing, China
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Luo F, Zhao Z, Zhang J, Leng J. Comparison of HLA-B*27 subtypes between Chinese patients with ankylosing spondylitis and non-ankylosing spondylitis carriers. J Int Med Res 2019; 47:3171-3178. [PMID: 31177886 PMCID: PMC6683902 DOI: 10.1177/0300060519853929] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Objective To investigate the distribution of subtypes between HLA-B*27 (+) patients with ankylosing spondylitis (AS) and carriers. Methods This case–control study recruited Chinese Han patients with HLA-B*27 (+) AS from six hospitals in Zhejiang Province, China between 2013 and 2018. Patients who were examined for HLA-B*27 because of back pain or arthralgia but who did not have AS or arthritis were recruited as controls. HLA-B*27 target DNA was amplified by amplification refractory mutation systems and HLA-B*27 subtypes were determined by sequencing. Results The positive rate of HLA-B*27 was significantly higher in the AS group than in the control group. In AS patients, HLA-B*2704 was predominant at 86.4%, followed by HLA-B*2705 at 12.6%; HLA-B*2704 and HLA-B*2705 were found in 70.0% and 10.0% of controls, respectively. HLA-B*2702 and HLA-B*2706 were detected at low frequencies in the control group, while the rare subtype HLA-B*2715 was only observed in two (1.0%) patients with AS. HLA-B*2707 was not detected in AS or control groups. Conclusion HLA-B*2704 is the predominant subtype among patients with AS and carriers in southeast China.
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Affiliation(s)
- Fangjun Luo
- 1 Department of Clinical Laboratory, Affiliated Zhuji Hospital of Wenzhou Medical University, Zhuji, China
| | - Zhigang Zhao
- 2 Zhejiang Lishui Central Hospital, Lishui Hospital of Zhejiang University, Lishui, China
| | - Jie Zhang
- 3 Shanghai ZJ Bio-Tech Co., Ltd, Shanghai, China
| | - Jianhang Leng
- 4 Central Laboratory of Hangzhou First People's Hospital, Hangzhou, China
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Ankylosing Spondylitis: Chinese Perspective, Clinical Phenotypes, and Associated Extra-articular Systemic Features. Curr Rheumatol Rep 2013; 15:344. [DOI: 10.1007/s11926-013-0344-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Lui NL. Key Advances in Spondyloarthritis and the Role of the Spondyloarthritis Clinic in the Singapore General Hospital. PROCEEDINGS OF SINGAPORE HEALTHCARE 2013. [DOI: 10.1177/201010581302200105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Affiliation(s)
- Nai Lee Lui
- Department of Rheumatology and Immunology, Singapore General Hospital, Singapore
- Duke-NUS Graduate Medical School, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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Díaz-Peña R, López-Vázquez A, López-Larrea C. Old and new HLA associations with ankylosing spondylitis. ACTA ACUST UNITED AC 2012; 80:205-13. [PMID: 22881057 DOI: 10.1111/j.1399-0039.2012.01944.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Ankylosing spondylitis (AS) is a chronic inflammatory rheumatic disease that primarily involves the axial skeleton and the sacroiliac joint, but may also affect peripheral joints and entheses. AS susceptibility is clearly attributable to genetic factors and the link between human leukocyte antigen (HLA)-B27 and AS is the strongest association between an HLA class I molecule and a disease. However, there is evidence for the involvement of other, non-B27 factors within the major histocompatibility complex (MHC) in AS susceptibility. MHC class I is clearly the most significant genetic region for the disease, although most of the genetic association of this region is driven by HLA-B27. Moreover, several studies have investigated the MHC class II region and its association with AS. This review summarizes the current findings concerning the MHC genetics of the disease, focusing in particular on the associations of HLA with AS found in different ethnic populations throughout the world, and the possible mechanisms underlying them.
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Affiliation(s)
- R Díaz-Peña
- Department of Immunology, Hospital Universitario Central de Asturias, Oviedo, Spain
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Abstract
The human leukocyte antigen (HLA)-B*2706 is a relatively rare subtype of HLA-B27. In contrast to most HLA-B27 subtypes, some studies have reported HLA-B*2706 to be protective against ankylosing spondylitis (AS). A systematic review and a meta-analysis of available studies was performed to investigate the association of HLA-B*2706 with AS. After literature review a random effect meta-analysis was performed. No studies were found comparing the frequency of HLA-B*2706 in AS patients and controls. Meta-analysis of seven studies using HLA-B27-positive AS patients and controls showed a protective effect of HLA-B*2706 on development of AS in HLA-B27 individuals (odds ratio = 0.128, 95% CI = 0.043-0.378, P < 0.001). The results of the meta-analysis of HLA-B*2706 in HLA-B27-positive patients and controls is preliminary evidence of a protective effect of HLA-B*2706 against AS in the population. There is a clear need for additional studies on HLA-B*2706 in AS. Due to the fact that HLA-B*2706 is more or less restricted to Southeast Asia, researchers in this part of the world may have an essential role in performing these studies.
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Mou Y, Wu Z, Gu J, Liao Z, Lin Z, Wei Q, Huang J, Li Q. HLA-B27 polymorphism in patients with juvenile and adult-onset ankylosing spondylitis in Southern China. ACTA ACUST UNITED AC 2010; 75:56-60. [DOI: 10.1111/j.1399-0039.2009.01406.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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WU ZHEN, MOU YIKUN, LIN ZHIMING, HUANG JINXIAN, WEI QIUJING, GU JIERUO. HLA-B27 Polymorphism in Han Chinese Patients with Ankylosing Spondylitis: A Distinctive Disease Association for B*2715 in a Multiplex Family. J Rheumatol 2009; 36:2849-50. [DOI: 10.3899/jrheum.090341] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Liu Y, Jiang L, Cai Q, Danoy P, Barnardo MCNM, Brown MA, Xu H. Predominant association of HLA-B*2704 with ankylosing spondylitis in Chinese Han patients. ACTA ACUST UNITED AC 2009; 75:61-4. [PMID: 19804562 DOI: 10.1111/j.1399-0039.2009.01379.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The HLA-B27 subtypes have a varied racial and ethnic prevalence throughout the world. However, the association of B27-subtypes with ankylosing spondylitis (AS) in the mainland China is unknown. To determine the association of B27-subtypes with AS in the Mainland Chinese Han population, a total of unrelated 153 patients with AS were enrolled in a large case-control association study, and 1545 unrelated, healthy, ethnically matched blood donors were included as controls. The genotyping of B27 and its subtypes was performed using the polymerase chain reaction with sequence specific primers (PCR-SSP). A total of 130 (84.97%) AS patients and 61 (3.95%) healthy controls were B27 positive. Three B27-subtypes, B*2704, B*2705 and B*2710, were further identified, of which both B*2704 and B*2705 were strongly AS associated. B*2710 was only detected in one AS patient and two other healthy controls. Considering only B27-positive cases and controls, a statistically different frequency of B27-subtypes was observed, with an over-representation of B*2704 (P = 0.018). B*2704 was clearly more strongly associated than B*2705 with AS [odds ratio (OR ) = 2.4, P = 0.011]. Furthermore, a combined analysis including three previous studies of B27-subtype distributions in Chinese AS cases confirmed the stronger association of B*2704 with AS than B*2705 (OR = 2.5, P = 0.00094).
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Affiliation(s)
- Y Liu
- Department of Rheumatology and Immunology, Changzheng Hospital, The Second Military Medical University, Shanghai, China
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The association of HLA-B*27 subtypes with ankylosing spondylitis in Wuhan population of China. Rheumatol Int 2009; 30:587-90. [PMID: 19536542 DOI: 10.1007/s00296-009-1018-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2009] [Accepted: 06/02/2009] [Indexed: 01/07/2023]
Abstract
The aim of this study was to investigate the association of the B27 subtypes with ankylosing spondylitis (AS) in the Wuhan population of China. We selected 317 HLA-B27-positive individuals (145 controls and 172 patients with ankylosing spondylitis). The B27 subtypes were characterized using a PCR-SSP method. Six B27 subtypes were determined: B*2702, 03, 04, 05, 06 and B*13. HLA-B*2704 and HLA-B*2705 were the two high frequency genotypes in controls and patients. Compared with the controls, the AS patients had high frequency of B*2704 (patients 69.2% vs. controls 53.8%) and low frequency of B*2705 (patients 23.8% vs. controls 33.1%). B*2703 was detected in 10 (5.8%) patients and in 13 (8.9%) controls. B*2702, 06 and B*2713 were relatively rare. Our results show that the allele conferring risk to AS in the Wuhan population of China was B*2704 and B*2705. B*2704 is strongly associated with AS.
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Hou TY, Chen HC, Chen CH, Chang DM, Liu FC, Lai JH. Usefulness of human leucocyte antigen-B27 subtypes in predicting ankylosing spondylitis: Taiwan experience. Intern Med J 2007; 37:749-52. [PMID: 17908086 DOI: 10.1111/j.1445-5994.2007.01450.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND Genetic factors are clearly attributed to the susceptibility of ankylosing spondylitis (AS). The human leucocyte antigen (HLA)-B27 proved to be the very useful marker for diagnosing AS. The aim of this study was to determine the prevalence of HLA-B27 subtypes in Taiwan and to investigate whether these subtypes may be of help in predicting the diagnosis of AS. METHODS A total of 314 patients with AS and a control group of 71 subjects positive for HLA-B27 detected by flow cytometry analysis were recruited for the study. HLA-B27 subtypes were confirmed by the polymerase chain reaction-sequence-specific primers and sequence-specific oligonucleotide probing. RESULTS Four B27 alleles were identified: B*2704, B*2705, B*2706 and B*2707. HLA-B*2704 was the predominant allele. There were significant differences in the distribution of HLA-B27 subtypes between patients with AS and controls. Five of them who were homozygous for the B*2704 allele were solely found in AS group but not in controls. Statistical analysis showed that B*2704 was positively associated with AS, which suggested an increased possibility of having AS. Other HLA-B27 subtypes showed no strong correlation with AS. CONCLUSION In the Taiwanese population, susceptibility to AS was determined by the presence of HLA-B*2704. Although B*2706 was reported to have a negative association with AS in Taiwanese, Thai and Chinese Singaporean populations, we report, in our study, two AS patients with B*2706 (0.6%). Disease heterogeneity suggests that other than genetic background, many pathogenic factors could be associated with AS. This may need to be investigated with a larger group of patients with AS and controls.
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Affiliation(s)
- T-Y Hou
- Division of Rheumatology/Immunology/Allergy, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
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Howe HS, Zhao L, Song YW, Springer L, Edmonds J, Gu J, Yu DTY. Seronegative Spondyloarthropathy – Studies from the Asia Pacific Region. ANNALS OF THE ACADEMY OF MEDICINE, SINGAPORE 2007. [DOI: 10.47102/annals-acadmedsg.v36n2p135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Recent therapeutic advances, in particular the use of anti-tumour necrosis factor (anti-TNF) agents, have revived interest in the seronegative spondyloarthropathies (SpA), a group of arthritides characterised by axial skeletal involvement and the absence of rheumatoid factor. The purpose of this article is to review the studies that have been done in the Asia Pacific region, as a broad understanding of the scope and severity of this group of diseases would enable rheumatologists and physicians in this part of the world to better manage their patients. The majority of genetic studies have focused on the associations of HLA-B27 with ankylosing spondylitis (AS) and SpA, while a few studies examined the associations of the CARD, IL-1, LMP2, TAP and TGF with AS. There are a handful of studies on the immunological responses to bacteria and cytokine levels in AS. The onset and clinical features of SpA have been reported from most countries in the region, but no data on patient outcomes, using current measurement tools such as the Bath Ankylosing Spondylitis Disease Activity index (BASDAI), is available. Validation of these instruments of measurement as well as classification criteria in different ethnic populations is necessary where no prior data exist. Future studies will likely be focused on better clinical characterisation of patient cohorts, particularly with regard to the use of currently used measurement tools for disease activity and spinal function and mobility, and the identification of the need for biologic therapy in each country.
Key words: ESSG criteria, Genetics, Immunological and clinical features
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Affiliation(s)
| | - Like Zhao
- the Third Affiliated Hospital of Sun Yat-sen University, People’s Republic of China
| | | | | | | | - Jieruo Gu
- the Third Affiliated Hospital of Sun Yat-sen University, People’s Republic of China
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Liu DW, Yang YC, Lin HF, Lin MF, Cheng YW, Chu CC, Tsao YP, Chen SL. Cytotoxic T-lymphocyte responses to human papillomavirus type 16 E5 and E7 proteins and HLA-A*0201-restricted T-cell peptides in cervical cancer patients. J Virol 2007; 81:2869-79. [PMID: 17202211 PMCID: PMC1865983 DOI: 10.1128/jvi.02256-06] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Previously, we found that human papillomavirus type 16 (HPV-16) E5 protein is a tumor rejection antigen and can induce cytotoxic T-lymphocyte (CTL) activity. Therefore, in this study, human leukocyte antigen A*0201 (HLA-A*0201)-restricted human CTL epitopes of HPV-16 E5 protein were identified using a bioinformatics approach, and the abilities of these predicted peptides to induce an immune response in HLA-A*0201 transgenic mice were confirmed by assaying E5-specific CTLs and in vitro-generated CTLs from normal peripheral blood T lymphocytes of HLA-A2-positive human donors. Second, the CTL responses to HLA-A*0201 CTL epitopes (E5 63-71 and E7 11-20) were examined in HPV-16-infected patients with HLA-A2. Third, the effect of HLA-A-type alleles on CTL activities in response to the entire E5 and E7 proteins was examined in cervical cancer patients. E5 and E7 peptides (but not the whole proteins) stimulated E5- and E7-specific CTL recall responses in HPV-16- and HLA-A2-positive cervical cancer patients, and HPV-16 E5 and E7 proteins stimulated naïve T cells in HPV-16-negative cervical cancer patients with HLA-A11 and -A24 haplotypes. In summary, this is the first demonstration that E5 63-71 is an HLA-A*0201-restricted T-cell epitope of HPV-16 E5.
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Affiliation(s)
- Dai-Wei Liu
- Graduate Institute of Microbiology, College of Medicine, National Taiwan University, 7F, No. 1 Sec. 1 Jen-Ai Rd., Taipei, Taiwan
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Ma HJ, Hu FP. Diversity of human leukocyte antigen-B27 alleles in Han population of Hunan province, southern China. ACTA ACUST UNITED AC 2006; 68:163-6. [PMID: 16866886 DOI: 10.1111/j.1399-0039.2006.00638.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This study was to investigate the frequency of HLA-B27 and its subtypes in the Han population of Hunan province, southern China. One hundred and sixty-nine healthy unrelated donors were tested for HLA-B27 by polymerase chain reaction-sequence-specific primer (PCR-SSP). One hundred and twenty-eight B27-positive spondyloarthropathy patients and 18 B27-positive healthy controls were subtyped using the high-resolution PCR-SSP. The phenotype frequency of human leukocyte antigen (HLA)-B27 was found to be 2.36% in healthy population. Five B27 alleles were identified: B*2704, B*2705, B*2706, B*2707, and B*2724. No significant difference was found in the distribution of HLA-B27 subtypes between the patients and controls studied. Notably, B*2724 was observed in a juvenile patient with ankylosing spondylitis. This subtype has not been previously reported in Chinese ankylosing spondylitis (AS) patients and other ethnic groups.
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Affiliation(s)
- H-J Ma
- Department of Immunology, Xiangya School of Medicine, Central South University, Changsha 410078, Hunan, China
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Gómez P, Montserrat V, Marcilla M, Paradela A, de Castro JAL. B*2707 differs in peptide specificity from B*2705 and B*2704 as much as from HLA-B27 subtypes not associated to spondyloarthritis. Eur J Immunol 2006; 36:1867-81. [PMID: 16783853 DOI: 10.1002/eji.200635896] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
HLA-B*2707 is associated with ankylosing spondylitis in most populations. Like the non-associated allotypes B*2706 and B*2709, it lacks Asp116 and shows preference for peptides with nonpolar C-terminal residues. The relationships between the peptide specificity of B*2707 and those of the disease-associated B*2705 and the non-associated subtypes were analyzed by determining the overlap between the corresponding peptide repertoires, the sequence of shared and differential ligands, and by comparing allospecific T cell epitopes with peptide sharing. The B*2707-bound repertoire was as different from that of B*2705 as from those of B*2706, B*2709, or the two latter subtypes from each other. Differences between B*2707 and B*2705 were based on their C-terminal residue specificity and a subtle modulation at other positions. Differential usage of secondary anchor residues explained the disparity between the B*2707-, B*2706-, and B*2709-bound repertoires. Similar differences in residue usage were found between B*2707 and both B*2704 and B*2706, as expected from the high peptide overlap between the two latter subtypes. T cell cross-reaction paralleled peptide sharing, suggesting that many shared ligands conserve their alloantigenic features on distinct subtypes. Our results indicate that association of HLA-B27 subtypes with ankylosing spondylitis does not correlate with higher peptide sharing among disease-associated subtypes or with obvious peptide motifs.
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Affiliation(s)
- Patricia Gómez
- Centro de Biología Molecular Severo Ochoa (Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid), Facultad de Ciencias, Universidad Autónoma, Madrid, Spain
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Zawacka A, Loll B, Biesiadka J, Saenger W, Uchanska-Ziegler B, Ziegler A. X-ray diffraction analysis of crystals from the human major histocompatibility antigen HLA-B*2706 in complex with a viral peptide and with a self-peptide. Acta Crystallogr Sect F Struct Biol Cryst Commun 2005; 61:1097-9. [PMID: 16511245 PMCID: PMC1978159 DOI: 10.1107/s1744309105037966] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2005] [Accepted: 11/17/2005] [Indexed: 01/05/2023]
Abstract
The human leukocyte antigen (HLA) alleles HLA-B*2704 and HLA-B*2706 show an ethnically restricted distribution and are differentially associated with ankylosing spondylitis, with HLA-B*2706 lacking association with this autoimmune disease. However, the products of the two alleles differ by only two amino acids, at heavy-chain residues 114 (His in HLA-B*2704; Asp in HLA-B*2706) and 116 (Asp in HLA-B*2704; Tyr in HLA-B*2706). Both residues could be involved in contacting amino acids of a bound peptide, suggesting that peptides presented by these subtypes play a role in disease pathogenesis. Two HLA-B*2706-peptide complexes were crystallized using the hanging-drop vapour-diffusion method with PEG as precipitant. Data sets were collected to resolutions of 2.70 A (viral peptide pLMP2, RRRWRRLTV; space group P2(1)2(1)2(1)) and 1.83 A (self-peptide pVIPR, RRKWRRWHL; space group P2(1)). Using HLA-B*2705 complexed with the pGR peptide (RRRWHRWRL) as a search model, unambiguous molecular-replacement solutions were found for both HLA-B*2706 complexes.
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Affiliation(s)
- Anna Zawacka
- Institut für Immungenetik, Charité – Universitätsmedizin Berlin, Campus Virchow-Klinikum, Humboldt-Universität zu Berlin, Spandauer Damm 130, 14050 Berlin, Germany
| | - Bernhard Loll
- Institut für Chemie und Biochemie/Kristallographie, Freie Universität Berlin, Takustrasse 6, 14195 Berlin, Germany
| | - Jacek Biesiadka
- Institut für Chemie und Biochemie/Kristallographie, Freie Universität Berlin, Takustrasse 6, 14195 Berlin, Germany
| | - Wolfram Saenger
- Institut für Chemie und Biochemie/Kristallographie, Freie Universität Berlin, Takustrasse 6, 14195 Berlin, Germany
| | - Barbara Uchanska-Ziegler
- Institut für Immungenetik, Charité – Universitätsmedizin Berlin, Campus Virchow-Klinikum, Humboldt-Universität zu Berlin, Spandauer Damm 130, 14050 Berlin, Germany
| | - Andreas Ziegler
- Institut für Immungenetik, Charité – Universitätsmedizin Berlin, Campus Virchow-Klinikum, Humboldt-Universität zu Berlin, Spandauer Damm 130, 14050 Berlin, Germany
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Loll B, Zawacka A, Biesiadka J, Petter C, Rückert C, Saenger W, Uchanska-Ziegler B, Ziegler A. Preliminary X-ray diffraction analysis of crystals from the recombinantly expressed human major histocompatibility antigen HLA-B*2704 in complex with a viral peptide and with a self-peptide. Acta Crystallogr Sect F Struct Biol Cryst Commun 2005; 61:939-41. [PMID: 16511201 PMCID: PMC1991317 DOI: 10.1107/s1744309105029234] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2005] [Accepted: 09/14/2005] [Indexed: 11/10/2022]
Abstract
The product of the human leukocyte antigen (HLA) gene HLA-B*2704 differs from that of the prototypical subtype HLA-B*2705 by three amino acids at heavy-chain residues 77 (Ser instead of Asp), 152 (Glu instead of Val) and 211 (Gly instead of Ala). In contrast to the ubiquitous HLA-B*2705 subtype, HLA-B*2704 occurs only in orientals. Both subtypes are strongly associated with spondyloarthropathies and the peptides presented by these subtypes are suspected to play a role in disease pathogenesis. HLA-B*2704 was crystallized in complex with a viral peptide and with a self-peptide using the hanging-drop vapour-diffusion method with PEG as a precipitant. Both crystals belong to space group P2(1)2(1)2(1). Data sets were collected to 1.60 A (complex with the self-peptide pVIPR) or to 1.90 A (complex with the viral peptide pLMP2) resolution using synchrotron radiation. With HLA-B*2705 complexed with pVIPR as a search model, unambiguous molecular-replacement solutions were found for the complexes of HLA-B*2704 with both peptides.
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Affiliation(s)
- Bernhard Loll
- Institut für Chemie/Kristallographie, Freie Universität Berlin, Takustrasse 6, 14195 Berlin, Germany
| | - Anna Zawacka
- Institut für Immungenetik, Charité–Universitätsmedizin Berlin, Campus Virchow-Klinikum, Humboldt-Universität zu Berlin, Spandauer Damm 130, 14050 Berlin, Germany
| | - Jacek Biesiadka
- Institut für Chemie/Kristallographie, Freie Universität Berlin, Takustrasse 6, 14195 Berlin, Germany
| | - Cordula Petter
- Institut für Immungenetik, Charité–Universitätsmedizin Berlin, Campus Virchow-Klinikum, Humboldt-Universität zu Berlin, Spandauer Damm 130, 14050 Berlin, Germany
| | - Christine Rückert
- Institut für Immungenetik, Charité–Universitätsmedizin Berlin, Campus Virchow-Klinikum, Humboldt-Universität zu Berlin, Spandauer Damm 130, 14050 Berlin, Germany
| | - Wolfram Saenger
- Institut für Chemie/Kristallographie, Freie Universität Berlin, Takustrasse 6, 14195 Berlin, Germany
| | - Barbara Uchanska-Ziegler
- Institut für Immungenetik, Charité–Universitätsmedizin Berlin, Campus Virchow-Klinikum, Humboldt-Universität zu Berlin, Spandauer Damm 130, 14050 Berlin, Germany
| | - Andreas Ziegler
- Institut für Immungenetik, Charité–Universitätsmedizin Berlin, Campus Virchow-Klinikum, Humboldt-Universität zu Berlin, Spandauer Damm 130, 14050 Berlin, Germany
- Correspondence e-mail:
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Goodall JC, Ellis L, Hill Gaston JS. Spondylarthritis-associated and non–spondylarthritis-associated B27 subtypes differ in their dependence upon tapasin for surface expression and their incorporation into the peptide loading complex. ACTA ACUST UNITED AC 2005; 54:138-47. [PMID: 16385505 DOI: 10.1002/art.21552] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVE B27 subtypes associated with susceptibility to ankylosing spondylitis (AS), and those reported not to be associated with AS, are found to differ in the amino acids that are known in other HLA class I molecules to alter the requirements for tapasin and incorporation into the peptide loading complex. The purpose of this study was to examine the behavior of B*2704 and B*2705 in comparison with B*2706 and B*2709 during early events in HLA class I antigen expression, and determine if their behavior correlates with disease association. METHODS Cell lines with nonfunctional tapasin were transiently transfected with different B27 subtypes and their site-directed mutants, and surface expression analyzed by flow cytometry. The association with the peptide loading complex was determined by immunoprecipitation of heterodimeric transporter-associated peptide and analysis of coprecipitated B27. RESULTS Amino acids at positions 114, 116, and 152 in the different B27 subtypes were shown to perform key roles in defining a requirement for interaction with tapasin. Not all disease-associated alleles were expressed optimally in the absence of tapasin; furthermore, dependence on tapasin for cell surface expression did not correlate with disease association. Although B*2706, which is not associated with disease, exhibited a number of properties different from those of the disease-associated subtypes, these properties were not displayed by the non-disease-associated allele B*2709. CONCLUSION These results indicate that the ability to exhibit optimal cell surface expression in the absence of tapasin is not a prerequisite for susceptibility to AS.
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Affiliation(s)
- Jane C Goodall
- Addenbrooke's Hospital, Box 157, Level 5, University of Cambridge, Hills Road, Cambridge CB2 2QQ, UK.
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Yang KL, Chen IH, Hsiao CK, Cherng JM, Yang KZ, Chang CC, Yeh CC, Lin PY. Polymorphism of HLA-B27 in Taiwanese Chinese. ACTA ACUST UNITED AC 2004; 63:476-9. [PMID: 15104680 DOI: 10.1111/j.0001-2815.2004.00197.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Heterogeneity of HLA-B27 is represented by a family of 24 closely related alleles/subtypes. Frequency and disease association of these alleles with spondyloarthropathies differ among ethnic groups. Accurate investigation of frequencies of alleles is often hindered by the size and demographic region of sample tested. With an ever-increasing number of B27 alleles being discovered, it is becoming imperative to establish disease association of each individual alleles and its biological importance. In a large number of normal healthy Taiwanese Chinese individuals (75,777) tested nationally, over a period of five years, in a single immunogenetics centre, we found additional B27 subtypes not revealed in a previous Taiwanese Chinese population study. The subtypes found in Taiwanese Chinese and the frequencies of each of the subtypes are reported.
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Affiliation(s)
- K L Yang
- Tzu Chi Marrow Stem Cells Centre, Buddhist Compassion Relief Tzu Chi Foundation, Section 3, 707 Chung Yang Road, Hualien, Taiwan 970. edward@
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