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Mack SJ. A gene feature enumeration approach for describing HLA allele polymorphism. Hum Immunol 2015; 76:975-81. [PMID: 26416087 PMCID: PMC4674356 DOI: 10.1016/j.humimm.2015.09.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 09/24/2015] [Accepted: 09/24/2015] [Indexed: 11/25/2022]
Abstract
HLA genotyping via next generation sequencing (NGS) poses challenges for the use of HLA allele names to analyze and discuss sequence polymorphism. NGS will identify many new synonymous and non-coding HLA sequence variants. Allele names identify the types of nucleotide polymorphism that define an allele (non-synonymous, synonymous and non-coding changes), but do not describe how polymorphism is distributed among the individual features (the flanking untranslated regions, exons and introns) of a gene. Further, HLA alleles cannot be named in the absence of antigen-recognition domain (ARD) encoding exons. Here, a system for describing HLA polymorphism in terms of HLA gene features (GFs) is proposed. This system enumerates the unique nucleotide sequences for each GF in an HLA gene, and records these in a GF enumeration notation that allows both more granular dissection of allele-level HLA polymorphism and the discussion and analysis of GFs in the absence of ARD-encoding exon sequences.
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Affiliation(s)
- Steven J Mack
- Children's Hospital Oakland Research Institute, 5700 Martin Luther King Jr. Way, Oakland, CA 94609, USA.
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2
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Abstract
In this issue of Blood, Pidala et al report that nonpermissive DPB1 allele mismatch is associated with increased transplant-related mortality (TRM) and should be avoided to secure optimal unrelated donor hematopoietic stem cell transplantations (HSCTs).
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3
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Gogas H, Kirkwood JM, Falk CS, Dafni U, Sondak VK, Tsoutsos D, Stratigos A, Markopoulos C, Pectasides D, Spyropoulou-Vlachou M. Correlation of molecular human leukocyte antigen typing and outcome in high-risk melanoma patients receiving adjuvant interferon. Cancer 2010; 116:4326-33. [PMID: 20549830 PMCID: PMC2970916 DOI: 10.1002/cncr.25211] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND: Interferon is approved for adjuvant treatment of patients with stage IIB/III melanoma. The identification of predictive markers that would permit selection of patients would be beneficial. Specific human leukocyte antigen (HLA) class I and II antigens have previously shown an association with response to therapy or overall survival of patients with metastatic melanoma. METHODS: A total of 284 high-risk melanoma patients participating in a randomized trial and 246 healthy controls were molecularly typed for HLA class I and II. Specific allele frequencies were compared between the healthy and patient populations, as well as presence or absence of these in relation to recurrence. Alleles related to autoimmune disease were also investigated. RESULTS: No significant differences were found between the distribution of HLA genotype in the melanoma population compared with healthy controls. Correlations between nonrecurrence and the presence of HLA-Cw*06 allele were noted present in 19.3% of melanoma patients. The median relapse-free survival of the Cw*06-positive cohort was 100.2 months versus 37.3 months in the Cw*06-negative cohort (P = .013). The median overall survival for the Cw*06-positive cohort has not yet been reached, versus 78.9 months in the Cw*06-negative cohort (P = .025). HLA-Cw*06 was present in 29.79% of patients in the autoimmunity group and 15.38% of patients in the nonautoimmunity group (P = .049). CONCLUSIONS: No allele was associated with absence of recurrence in patients receiving adjuvant interferon with the exception of HLA-Cw*06, an allele correlated with psoriasis. HLA-Cw*06-positive patients have better relapse-free and overall survival. Cancer 2010. © 2010 American Cancer Society.
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Affiliation(s)
- Helen Gogas
- First Department of Medicine, University of Athens, Medical School, Athens, Greece.
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4
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Goda N, Mano T, Masuda R. Genetic Diversity of the MHC Class-IIDQAGene in Brown Bears (Ursus arctos) on Hokkaido, Northern Japan. Zoolog Sci 2009; 26:530-5. [DOI: 10.2108/zsj.26.530] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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5
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DeLuca DS, Beisswanger E, Wermter J, Horn PA, Hahn U, Blasczyk R. MaHCO: an ontology of the major histocompatibility complex for immunoinformatic applications and text mining. ACTA ACUST UNITED AC 2009; 25:2064-70. [PMID: 19429601 DOI: 10.1093/bioinformatics/btp306] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
MOTIVATION The high level of polymorphism associated with the major histocompatibility complex (MHC) poses a challenge to organizing associated bioinformatic data, particularly in the area of hematopoietic stem cell transplantation. Thus, this area of research has great potential to profit from the ongoing development of biomedical ontologies, which offer structure and definition to MHC-data related communication and portability issues. RESULTS We introduce the design considerations, methodological foundations and implementational issues underlying MaHCO, an ontology which represents the alleles and encoded molecules of the major histocompatibility complex. Importantly for human immunogenetics, it includes a detailed level of human leukocyte antigen (HLA) classification. We then present an ontology browser, search interfaces for immunogenetic fact and document retrieval, and the specification of an annotation language for semantic metadata, based on MaHCO. These use cases are intended to demonstrate the utility of ontology-driven bioinformatics in the field of immunogenetics. AVAILABILITY AND IMPLEMENTATION The MaHCO Ontology is available via the BioPortal: http://www.bioontology.org/tools/portal/bioportal.html, and at: http://purl.org/stemnet/.
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Affiliation(s)
- David S DeLuca
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany.
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6
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Influence of host genetic variation on rubella-specific T cell cytokine responses following rubella vaccination. Vaccine 2009; 27:3359-66. [PMID: 19200845 DOI: 10.1016/j.vaccine.2009.01.079] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The variability of immune response modulated by immune response gene polymorphisms is a significant factor in the protective effect of vaccines. We studied the association between cellular (cytokine) immunity and HLA genes among 738 schoolchildren (396 males and 342 females) between the ages of 11 and 19 years, who received two doses of rubella vaccine (Merck). Cytokine secretion levels in response to rubella virus stimulation were determined in PBMC cultures by ELISA. Cell supernatants were assayed for Th1 (IFN-gamma, IL-2, and IL-12p40), Th2 (IL-4, IL-5, and IL-10), and innate/proinflammatory (TNF-alpha, GM-CSF, and IL-6) cytokines. We found a strong association between multiple alleles of the HLA-DQA1 (global p-value 0.022) and HLA-DQB1 (global p-value 0.007) loci and variations in rubella-specific IL-2 cytokine secretion. Additionally, the relationships between alleles of the HLA-A (global p-value 0.058), HLA-B (global p-value 0.035), and HLA-C (global p-value 0.023) loci and TNF-alpha secretion suggest the importance of HLA class I molecules in innate/inflammatory immune response. Better characterization of these genetic profiles could help to predict immune responses at the individual and population level, provide data on mechanisms of immune response development, and further inform vaccine development and vaccination policies.
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7
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Holdsworth R, Hurley CK, Marsh SGE, Lau M, Noreen HJ, Kempenich JH, Setterholm M, Maiers M. The HLA dictionary 2008: a summary of HLA-A, -B, -C, -DRB1/3/4/5, and -DQB1 alleles and their association with serologically defined HLA-A, -B, -C, -DR, and -DQ antigens. ACTA ACUST UNITED AC 2009; 73:95-170. [DOI: 10.1111/j.1399-0039.2008.01183.x] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Human leukocyte antigen-B*2705 is the predominant subtype in the Korean population with ankylosing spondylitis, unlike in other Asians. Rheumatol Int 2008; 29:43-6. [PMID: 18493767 DOI: 10.1007/s00296-008-0602-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2008] [Accepted: 05/04/2008] [Indexed: 10/22/2022]
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9
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Shichi D, Matsumori A, Naruse TK, Inoko H, Kimura A. HLA-DPbeta chain may confer the susceptibility to hepatitis C virus-associated hypertrophic cardiomyopathy. Int J Immunogenet 2008; 35:37-43. [PMID: 18186799 DOI: 10.1111/j.1744-313x.2007.00733.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hypertrophic cardiomyopathy (HCM) is a heart muscle disease characterized by hypertrophy and diastolic dysfunction of cardiac ventricles. It is suggested that one possible aetiology of HCM is the hepatitis C virus (HCV) infection, but molecular mechanisms underlying development of HCV-associated HCM (HCV-HCM) remains unknown. Because the human leucocyte antigen (HLA) molecule is involved in the control of progression/suppression of viral infection, extensive HLA allelic diversity may modulate the post-infectious course of HCV and pathogenesis of HCV-HCM. Here we undertook a case-control study with 38 patients with HCV-HCM and 132 unrelated healthy controls to reveal the potential impact of polymorphisms in seven classical and two non-classical HLA genes on the pathogenesis of HCV-HCM. It was found that DPB1*0401 and DPB1*0901 were significantly associated with increased risk to HCV-HCM in dominant model (P < 0.028, OR = 3.94, 95% confidence interval (CI) = 1.19, 13.02) and in recessive model (P < 0.007, OR = 9.85, 95% CI = 1.83, 53.04), respectively. The disparity in the gene-dose effect by two susceptible DPB1 alleles may be attributable to the difference between the susceptible (36 A and 55 A) and resistant (8L, 9F, 11G, 57E and 76M) residue-combination consisting of DPbeta anchor pocket for antigenic peptide-binding. These results implied that the HLA-DP molecules with specificity pocket appropriate for HCV antigen(s) might confer the progressive process of HCM among the HCV-infected individuals.
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Affiliation(s)
- D Shichi
- Department of Molecular Pathogenesis, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
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Lebedeva TV, Ohashi M, Mastromarino SA, Alosco SM, Yu N. New HLA-C alleles identified in minority populations. ACTA ACUST UNITED AC 2007; 70:441-2. [PMID: 17711411 DOI: 10.1111/j.1399-0039.2007.00912.x] [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] [Indexed: 11/29/2022]
Abstract
Twenty new human leukocyte antigen C alleles identified in 2200 minority individuals characterized by sequence-based typing.
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Affiliation(s)
- T V Lebedeva
- HLA Laboratory, American Red Cross Blood Services, Dedham, MA 02026, USA.
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Witter K, Albert T, Volgger A, Zahn R, Scholz S. Routine HLA sequence-specific-oligonucleotide typing and confirming sequence-based typing of a prospective bone marrow donor identified a novel B*27 allele, HLA-B*2734. ACTA ACUST UNITED AC 2007; 68:527-8. [PMID: 17176447 DOI: 10.1111/j.1399-0039.2006.00705.x] [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] [Indexed: 11/28/2022]
Abstract
In this study, we report the identification of a new human leukocyte antigen-B allele in a sample that was tested in our routine typing for volunteer bone marrow donors. This novel allele officially named B*2734 was found in a female donor of Caucasoid origin (laboratory code 158567). The search for unrelated bone marrow donors was initiated by the Aktion Knochenmarkspende Bayern. In comparison with the closest related allele B*2707, B*2734 differs at two nucleotide positions, all located in exon 3, at position 412, 'A' in B*2707 is replaced by 'G' and at position 486, 'G' is replaced by 'A' in the novel allele. The single nucleotide polymorphism at position 412 results in an amino acid substitution at codon 138. The amino acid asparagine is changed to aspartic acid in B*2734 allele. The second nucleotide exchange is a silent mutation and codon 163 remains unaffected as ACG-->ACA, still codes for alanine.
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Affiliation(s)
- K Witter
- Labor of Immunogenetics, University Munich, Munich, Germany.
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Vidan-Jeras B, Kunilo S, Fae I, Kandus A, Fischer GF. A novel HLA-B*2730 allele found in a Slovene patient affected with IgA nephropathy. Int J Immunogenet 2006; 33:371-3. [PMID: 16984282 DOI: 10.1111/j.1744-313x.2006.00629.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: 11/29/2022]
Abstract
A novel allele HLA-B*2730 and the haplotype HLA-A*03-B*2730-Cw*02-DRB1*16-DRB5 have been found in a Slovene patient and his mother. The exon 2 sequence is identical to that of HLA-B*2702, and the exon 3 sequence is identical to that of HLA-B*2719. A possible mechanism for the generation of B*2730 is a gene conversion event.
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Affiliation(s)
- B Vidan-Jeras
- Tissue Typing Centre, Blood Transfusion Centre of Slovenia, Slajmerjeva, Ljubljana. Slovenia.
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Horn PA, Elsner HA, Blasczyk R. Tissue typing for hematopoietic cell transplantation: HLA-DQB1 typing should be included. Pediatr Transplant 2006; 10:753-4. [PMID: 16911505 DOI: 10.1111/j.1399-3046.2006.00558.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Hirv K, Pannicke U, Mytilineos J, Schwarz K. Disulfide Bridge Disruption in the α2 Domain of the HLA Class I Molecule Leads to Low Expression of the Corresponding Antigen. Hum Immunol 2006; 67:589-96. [PMID: 16916654 DOI: 10.1016/j.humimm.2006.04.010] [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] [Received: 12/07/2005] [Indexed: 11/30/2022]
Abstract
Using sequence-based typing, we have identified a novel human leukocyte antigen (HLA)-A*30 allele, HLA-A*3014L, with a low expression pattern. The sequence of HLA-A*3014L is identical to that of HLA-A*3001 except for a G to C substitution in exon 3 at nucleotide position 563, resulting in an amino acid difference at position 164 (Cys to Ser). Due to the cysteine substitution, a disulfide bridge in the alpha2 domain of the HLA class I heavy chain cannot be formed. By using the standard microlymphocytotoxicity test, the HLA-A30 antigen cannot be detected. By flow cytometric analysis of the cell-surface expression at either 37 degrees C or 30 degrees C, a temperature-sensitive expression pattern of the HLA-A*3014L antigen was observed. Only by incubating the cells at 30 degrees C, which increases the stability of HLA class I heavy chains, was a weak but clearly detectable HLA-A*3014L expression found. The mRNA expression level of the HLA-A*3014L allele was not affected by the nucleotide substitution. The intrachain disulfide bond formation in the alpha2 domain is essential for the normal expression of the HLA molecules. Reduced protein expression is probably caused by incorrect HLA class I heavy chain folding and HLA class I complex assembly.
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Affiliation(s)
- Kaimo Hirv
- Department of Transplantation Immunology, Institute for Clinical Transfusion Medicine and Immunogenetics Ulm, Germany.
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Favorova OO, Favorov AV, Boiko AN, Andreewski TV, Sudomoina MA, Alekseenkov AD, Kulakova OG, Gusev EI, Parmigiani G, Ochs MF. Three allele combinations associated with multiple sclerosis. BMC MEDICAL GENETICS 2006; 7:63. [PMID: 16872485 PMCID: PMC1557481 DOI: 10.1186/1471-2350-7-63] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2006] [Accepted: 07/26/2006] [Indexed: 11/10/2022]
Abstract
BACKGROUND Multiple sclerosis (MS) is an immune-mediated disease of polygenic etiology. Dissection of its genetic background is a complex problem, because of the combinatorial possibilities of gene-gene interactions. As genotyping methods improve throughput, approaches that can explore multigene interactions appropriately should lead to improved understanding of MS. METHODS 286 unrelated patients with definite MS and 362 unrelated healthy controls of Russian descent were genotyped at polymorphic loci (including SNPs, repeat polymorphisms, and an insertion/deletion) of the DRB1, TNF, LT, TGFbeta1, CCR5 and CTLA4 genes and TNFa and TNFb microsatellites. Each allele carriership in patients and controls was compared by Fisher's exact test, and disease-associated combinations of alleles in the data set were sought using a Bayesian Markov chain Monte Carlo-based method recently developed by our group. RESULTS We identified two previously unknown MS-associated tri-allelic combinations:-509TGFbeta1*C, DRB1*18(3), CTLA4*G and -238TNF*B1,-308TNF*A2, CTLA4*G, which perfectly separate MS cases from controls, at least in the present sample. The previously described DRB1*15(2) allele, the microsatellite TNFa9 allele and the biallelic combination CCR5Delta32, DRB1*04 were also reidentified as MS-associated. CONCLUSION These results represent an independent validation of MS association with DRB1*15(2) and TNFa9 in Russians and are the first to find the interplay of three loci in conferring susceptibility to MS. They demonstrate the efficacy of our approach for the identification of complex-disease-associated combinations of alleles.
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Affiliation(s)
- Olga O Favorova
- Department of Molecular Biology and Medical Biotechnology, Russian State Medical University, 15 3d Cherepkovskaya ul., Moscow 121552, Russia
- Cardiology Research Center, 15 3d Cherepkovskaya ul., Moscow 121552, Russia
| | - Alexander V Favorov
- Bioinformatics Laboratory, GosNIIGenetika, 1 1st Dorozhny pr., Moscow 117545, Russia
| | - Alexey N Boiko
- Department of Neurology and Neurosurgery, Russian State Medical University, 1 Ostrovitianova ul., Moscow 117997, Russia
| | | | - Marina A Sudomoina
- Department of Molecular Biology and Medical Biotechnology, Russian State Medical University, 15 3d Cherepkovskaya ul., Moscow 121552, Russia
- Cardiology Research Center, 15 3d Cherepkovskaya ul., Moscow 121552, Russia
| | | | - Olga G Kulakova
- Department of Molecular Biology and Medical Biotechnology, Russian State Medical University, 15 3d Cherepkovskaya ul., Moscow 121552, Russia
| | - Eugenyi I Gusev
- Department of Neurology and Neurosurgery, Russian State Medical University, 1 Ostrovitianova ul., Moscow 117997, Russia
| | - Giovanni Parmigiani
- Departments of Oncology, Pathology and Biostatistics, Johns Hopkins University, 550 North Broadway, s. 1103, Baltimore, Maryland 21205, USA
| | - Michael F Ochs
- Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, Pennsylvania 19111, USA
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Quiroga I, Sweeney D, Sutton PM, Ahmad T, Walton R, Barnardo MCNM, Fuggle SV. The identification of three novel MICA alleles by sequence-based typing. ACTA ACUST UNITED AC 2006; 67:321-5. [PMID: 16634869 DOI: 10.1111/j.1399-0039.2006.00574.x] [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] [Indexed: 11/27/2022]
Abstract
During a study of MICA frequency in a healthy population and a cohort of patients suffering with inflammatory bowel disease, three DNA samples produced unusual reactivity patterns using polymerase chain reaction sequence-specific primers (PCR-SSP). These samples were subsequently characterized by sequence-based typing (SBT). Here, we report the sequence of these three novel MICA alleles.
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Affiliation(s)
- I Quiroga
- Nuffield Department of Surgery, University of Oxford, John Radcliffe Hospital, Oxford, UK
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Quiroga I, Salio M, Koo DDH, Cerundolo L, Shepherd D, Cerundolo V, Fuggle SV. Expression of MHC class I-related Chain B (MICB) molecules on renal transplant biopsies. Transplantation 2006; 81:1196-203. [PMID: 16641608 DOI: 10.1097/01.tp.0000205788.05322.42] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND MICA and MICB (MHC class I-related chain A and B) are polymorphic genes that encode molecules related to MHC class I and are expressed on epithelial cells in response to stress. Incompatible donor MIC antigens can stimulate antibody production in transplant recipients. This study was designed to determine MICB expression in kidney pretransplant and any subsequent changes in expression following transplantation and to correlate changes with inflammatory markers and clinical events. METHODS Paired renal biopsies obtained from living donor (n=10) and cadaveric allografts (n=50) before and 7 days posttransplant were stained for MICB, leukocytic infiltration, and HLA class II antigens. RESULTS Variable tubular MICB expression was evident in donor biopsies [high 6/60 (10%), low/negative 13/60 (22%), intermediate 41/60 (68%)]. Following transplantation, MICB was up-regulated on renal tubules of 17/60 (28%) biopsies and was associated with MHC class II antigen induction (P=0.02) and leukocyte infiltration (P=0.01). Acute tubular necrosis leading to delayed graft function (DGF) and acute rejection (AR) cause cellular stress within the transplanted kidney. We found a strong association between up-regulation of MICB and cellular stress, 15/17 biopsies with up-regulated MICB expression had AR and/or DGF (P=0.003). CONCLUSIONS This is the first study demonstrating variable levels of MICB expression in kidneys before transplantation and induction of MICB expression following renal transplantation. MICB expression is associated with HLA class II antigen induction, leukocytic infiltration of the graft and cellular stress in the transplanted kidney. Expression of MICB could contribute significantly to the alloimmune response in mismatched donors and recipients.
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Affiliation(s)
- Isabel Quiroga
- Nuffield Department of Surgery, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
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Liu F, Wang S, Ye Y, Zhang H, Zhang Y, Chen W. Identification and functional perspective of a novel HLA-A allele: A*0279. Immunogenetics 2006; 58:339-46. [PMID: 16583211 DOI: 10.1007/s00251-006-0087-4] [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: 10/29/2005] [Accepted: 01/10/2006] [Indexed: 01/06/2023]
Abstract
A novel HLA-A allele, HLA-A*0279, was identified using PCR-SSP and PCR-SBT methods. It is inheritable. HLA-A*0279 differs from HLA-A*020601 by a single nucleotide at position 497 in exon 3, leading to an amino acid change from Threonine to Isoleucine at the alpha2 helix of HLA molecule. To investigate whether the altered amino acid residue could affect its peptide-binding repertoire, we compared the predicted crystal structure of HLA-A*020601 and HLA-A*0279 by Swiss-PdbViewer software analysis. We found that the crystal structure of the two molecules is very similar except for a difference in the number of hydrogen bonds they can possibly form, which in turn could affect their structural stability. To test whether HLA-A*0279 has the ability to cross-present A*0201 - restricted peptides to T cells, the full lenght cDNA of HLA-A*0201, -A* 020601 and -A*0279 were respectively transfected into COS-7 cells, which were then used as targets in IFN-gamma release Elispot assay. A*2079 was found to be able to present A*0201- restricted peptides to and induce the response of CTL, thus it can be classified as member of the HLA-A2 functional supertype family. This finding would benefit the design of peptide vaccines to be applied in broader populations.
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Affiliation(s)
- Fangfang Liu
- Department of Gastroenterological Surgery, Surgical Oncology Laboratory, People's Hospital, Peking University, 100044, Beijing, People' Republic of China
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Miao KR, Xue M, Zhou XY, Xu R, Fei XM, Pan QQ, Zhang JW, Zhao X, Fan S, KuKuruga D, Xu AL, Wang CY. Characterization of a novel DRB1*14 allele (DRB1*1449) in the Han-Chinese population. Int J Immunogenet 2006; 33:33-5. [PMID: 16426240 DOI: 10.1111/j.1744-313x.2005.00557.x] [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] [Indexed: 11/29/2022]
Abstract
We report here a novel human leukocyte antigen (HLA) allele, DRB1*1449, in the Han-Chinese population. The nature of the new allele was confirmed by the sequencing-based typing (SBT) method. Genomic DNA and six subclones containing DNA fragment of DRB1 exon 2 were sequenced in both forward and reverse directions. The exon 2 nucleotide sequence of DRB1*1449 is closely related to DRB1*1432 allele based on sequence homology. It has four nucleotide (nt) substitutions at positions 71, 196, 244 and 245 in exon 2, which lead to changes of amino acid sequences. The serological assignment of DRB1*1449 is DR14 based on the serological HLA typing result. This novel allele might be a result of recombination between DRB1*1402 and DRB1*140101 like alleles, which are very common among Chinese population.
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Affiliation(s)
- K R Miao
- The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, PR China
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Miao KR, Pan QQ, Xue M, Zhou XY, Fei XM, Tang YH, Xu R, Zhang JW, Zhao X, Osowski L, Shi WX, Xu AL, Wang CY, KuKuruga D. A novel HLA allele, DRB1*1609, identified in the Chinese Han population*. ACTA ACUST UNITED AC 2005; 66:248-50. [PMID: 16101839 DOI: 10.1111/j.1399-0039.2005.00443.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel human leucocyte antigen-DRB1*16 (HLA-DRB1*16) allele (DRB1*1609) has been identified by sequencing-based typing (SBT) in Chinese Han population. This new allele has identical nucleotide sequence to DRB1*160101 in exon 2, except for a single-nucleotide substitution from A to T at position 127. This change leads to an amino acid change from tyrosine to phenylalanin at residue 47 (Y47F). SBT was performed for cloned DRB1*16-specific polymerase chain reaction fragment. The serological phenotype of DRB1*1609 is equivalent to DR16 antigen.
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Affiliation(s)
- K R Miao
- The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiang Su Province, P.R. China
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Shichi D, Kikkawa EF, Ota M, Katsuyama Y, Kimura A, Matsumori A, Kulski JK, Naruse TK, Inoko H. The haplotype block, NFKBIL1-ATP6V1G2-BAT1-MICB-MICA, within the class III-class I boundary region of the human major histocompatibility complex may control susceptibility to hepatitis C virus-associated dilated cardiomyopathy. ACTA ACUST UNITED AC 2005; 66:200-8. [PMID: 16101831 DOI: 10.1111/j.1399-0039.2005.00457.x] [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: 01/03/2023]
Abstract
Cardiomyopathy is a heart muscle disease with impaired stretch response that can result in severe heart failure and sudden death. A small proportion of hepatitis C virus (HCV)-infected patients may be predisposed to develop dilated cardiomyopathy (DCM) and hypertrophic cardiomyopathy (HCM). The molecular mechanisms involved in the predisposition remain unknown due in part to the lack of information on their genetic background. Because the human leukocyte antigen (HLA) region has a pivotal role in controlling the susceptibility to HCV-induced liver disease, we hypothesized that particular HLA alleles and/or non-HLA gene alleles within the human major histocompatibility complex (MHC) genomic region might control the predisposition to HCV-associated DCM (HCV-DCM) and/or HCV-associated HCM (HCV-HCM). Here, we present mapping results of the MHC-related susceptibility gene locus for HCV-associated cardiomyopathy by analyzing microsatellite and single nucleotide polymorphism markers. To delineate the susceptibility locus, we genotyped 44 polymorphic markers scattered across the entire MHC region in a total of 59 patients (21 HCV-DCM and 38 HCV-HCM) and 120 controls. We mapped HCV-DCM susceptibility to a non-HLA gene locus spanning from NFKBIL1 to MICA gene loci within the MHC class III-class I boundary region. Our results showed that HCV-DCM was more strongly associated with alleles of the non-HLA genes rather than the HLA genes themselves. In addition, no significant association was found between the MHC markers and HCV-HCM. This marked difference in the MHC-related disease susceptibility for HCV- associated cardiomyopathy strongly suggests that the development of HCV- DCM and HCV-HCM is under the control of different pathogenic mechanisms.
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Affiliation(s)
- D Shichi
- Department of Basic Medical Science and Molecular Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan
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22
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Lebedeva TV, Ohashi M, Huang A, Zannelli G, Yu N. A frame shift due to a two-nucleotide insertion results in an HLA-DRB1 null allele, DRB1*1517N. ACTA ACUST UNITED AC 2005; 66:334-5. [PMID: 16185335 DOI: 10.1111/j.1399-0039.2005.00472c.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- T V Lebedeva
- HLA Laboratory, American Red Cross Blood Services, New England Region, Dedham, MA 02026, USA.
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23
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Tang J, Shao W, Dorak MT, Li Y, Miike R, Lobashevsky E, Wiencke JK, Wrensch M, Kaslow RA, Cobbs CS. Positive and negative associations of human leukocyte antigen variants with the onset and prognosis of adult glioblastoma multiforme. Cancer Epidemiol Biomarkers Prev 2005; 14:2040-4. [PMID: 16103458 DOI: 10.1158/1055-9965.epi-05-0136] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Associations of genetic factors with malignant gliomas have been modest. We examined the relationships of human leukocyte antigen (HLA) and related polymorphisms to glioblastoma multiforme in adult Caucasians (non-Hispanic Whites) from the San Francisco Bay area. For 155 glioblastoma multiforme patients and 157 control subjects closely matched by ethnicity, age, and gender, PCR-based techniques resolved alleles at HLA-A, -B, -C, and -DRB1 loci along with short tandem repeat polymorphisms of MICA exon 5 and TNFb. By multivariable logistic regression, B*13 and the B*07-Cw*07 haplotype were positively associated with glioblastoma multiforme (P=0.01 and <0.001, respectively), whereas Cw*01 was the only variant showing a negative association (P=0.05). Among glioblastoma multiforme patients, progression to death after diagnosis was slower in those with A*32 (relative hazard, 0.45; P<0.01) and faster in those with B*55 (relative hazard, 2.27; P<0.01). Thus, both the occurrence and the prognosis of glioblastoma multiforme could be associated with specific but different HLA genotypes. B*07 and the B*07-Cw*07 haplotype are much more common in Caucasians than other ethnic groups in the U.S., which may partially explain the higher incidence of glioblastoma multiforme in Caucasians.
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Affiliation(s)
- Jianming Tang
- Department of Medicine, University of Alabama at Birmingham, 1665 University Boulevard, RPHB Room 220A, Birmingham, AL 35294-0022, USA
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24
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Aláez C, Corona T, Ruano L, Flores H, Loyola M, Gorodezky C. Mediterranean and Amerindian MHC class II alleles are associated with multiple sclerosis in Mexicans. Acta Neurol Scand 2005; 112:317-22. [PMID: 16218914 DOI: 10.1111/j.1600-0404.2005.00493.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Human leukocyte antigen (HLA)-DRB1, DQA1, DQB1 allele typing was performed in Mexicans Mestizos with multiple sclerosis (MS) to define the HLA class II alleles associated with the disease in this population. METHODS Patients (n = 51) diagnosed according to the Poser criteria and a group of 173 unrelated healthy subjects were studied. PCR-SSOP and PCR-SSP were used for genotyping. RESULTS Fifty five percent of the patients were females. The mean age at disease onset was 27 years. A relapsing-remitting disease was the most frequent type of MS (67%). A significant association of DRB1*0403 (OR = 5.68) with MS was shown. DRB1*0802 was also involved in susceptibility (OR = 2.41). An excess of DRB1*0802 homozygotes was observed in patients (P = 0.005), this genotype being in genetic equilibrium in controls. CONCLUSIONS Two novel class II associations are described in Mexicans with MS: DRB1*0403 and DRB1*0802. Both alleles share with DRB1*1501, valine-86 and negatively charged amino acids, in the DRB1-anchoring motif of pocket 4.
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Affiliation(s)
- C Aláez
- Department of Immunology & Immunogenetics, Instituto de Diagnóstico y Referencia Epidemiológicos (InDRE), Secretary of Health, Mexico City, Mexico
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25
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Affiliation(s)
- Steven G E Marsh
- Anthony Nolan Research Institute, Royal Free Hospital, London, UK.
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26
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Quiroga I, Sweeney D, Sutton PM, Chapple SDJ, Souto-Grando JP, Barnardo MCNM, Fuggle SV. Identification of a novel MICA allele: MICA*051. ACTA ACUST UNITED AC 2005; 63:466-9. [PMID: 15104678 DOI: 10.1111/j.0001-2815.2004.00195.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
We have identified a novel MICA allele, MICA*051, detected by the polymerase chain reaction using sequence-specific primers and characterized by sequence-based typing. MICA*051 appears to be the result of a recombination between MICA*00801 and MICA*00701 at intron 2.
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Affiliation(s)
- I Quiroga
- Nuffield Department of Surgery, University of Oxford, Oxford, UK
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27
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Witter K, Sala M, Zahn R, McNicholas A, Volgger A, Albert ED. A novel A*24 allele, A*2442, was detected through routine bone marrow donor screening. ACTA ACUST UNITED AC 2005; 65:567-70. [PMID: 15896206 DOI: 10.1111/j.1399-0039.2005.00415.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
In this article, we report the identification of a new HLA-A allele found in a DNA sample which was part of the routine bone marrow donor typing performed in our laboratory. This novel allele officially designated as A*2442 was found in a sample from a female Caucasoid donor (Franken, Bavaria, Germany; lab code 142654) and differs from the closest related allele A*2408 by two nucleotide exchanges. In position 81, the A (A*2408) is changed to 81 C in the novel allele A*2442, resulting in an amino acid substitution at codon 27, glutamine (A*2408) is replaced by histidine ((31)Gln-->(31)His). In position 292, the G (A*2408) is changed to C also resulting in an amino acid replacement, the codon 98 asparagine is mutated to histidine ((98)Asn-->(98)His) in the new A*2442 allele. The second allele was determined to be A*0301. Further typing of this sample is B*1501 B*4001.
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Affiliation(s)
- K Witter
- Labor of Immunogenetics, University Munich, 80336 Munich, Germany.
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28
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Witter K, Volgger A, Zahn R, Scholz S, Sala M, Albert ED. Bone marrow donor routine HLA typing identified a novel B*55 allele, B*5517, confirmed by allele-specific DNA cycle sequencing. ACTA ACUST UNITED AC 2005; 66:58-60. [PMID: 15982261 DOI: 10.1111/j.1399-0039.2005.00426.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this article, we report the identification of a new human leukocyte antigen-B allele in a sample that was tested in our routine typing for volunteer bone marrow donors. This novel allele officially designed B*5517 was found in a male donor of Bavarian Caucasoid origin (Laboratory code 150113). The search for unrelated bone marrow donors was initiated by the Aktion Knochenmarkspende Bayern. In comparison with the common B*5501 allele, B*5517 differs at three nucleotide positions all located in exon 3, at position 379 (C-->G), 419 (T-->A), and 420 (A-->C), resulting in two amino acid substitutions at codons 127 and 140. The amino acid 127, leucine, is changed to valine, and the amino acid 140, also a leucine, is replaced by tyrosine in B*5517.
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Affiliation(s)
- K Witter
- Labor of Immunogenetics, University Munich, Munich, Germany.
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29
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Wang CY, Pan Q, Xue M, Miao KR, Fei XM, Zhou XY, Zhao X, Kukuruga D, Osowski L, Poore B, Beattie R, Shi WX, Zhang H. Identification of an HLA-B*07 allele variant (B*0740) in the Chinese Han population. ACTA ACUST UNITED AC 2005; 66:148-50. [PMID: 16029438 DOI: 10.1111/j.1399-0039.2005.00438.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
A novel HLA-B*07 allele, B*0740, has been identified by sequence-based typing (SBT) in the Chinese Han population. This new allele is identical to B*0705 and B*0706 for exons 2, 3, and 4, except for a single nucleotide at position 605 of codon 202 in exon 3 (AAG-->ATG) leading to an amino acid change from lysine to methionine. SBT was performed following allele separation using the Haploprep method. The serological equivalence of B*0740 to the B7 antigen did not change.
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Affiliation(s)
- C Y Wang
- The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiang Su Province, P.R. China
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30
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Lebedeva TV, Huang A, Ohashi M, Sibilia P, Alosco SM, Kempenich J, Yu N. The recombinant HLA-B*5518 allele supports the evidence of conserved haplotype association of rare alleles. ACTA ACUST UNITED AC 2005; 66:156-9. [PMID: 16029440 DOI: 10.1111/j.1399-0039.2005.00442.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Allelic polymorphism of the major histocompatibility complex arises mostly from gene recombination. Intralocus gene recombination usually involves short fragments of DNA leading most commonly to single-nucleotide substitutions and rarely involves large fragments. Here, we report a new recombinant human leukocyte antigen (HLA)-B*5518 allele that has arisen via recombination of a large fragment of DNA spanning more than 70 nucleotides. During routine HLA typing of potential volunteer donors for the National Marrow Donor Program((R)), a new HLA-B allele was identified in two donors from Guam. The allele, B*5518, appears to be a product of recombination between B*5502 and B*40. Exons 1, 3, and 4 of the new allele belong to B*5502, whereas part of exon 2 belongs to one of B*40 alleles. Introns 1 and 2 appear to belong to B*55, suggesting that the recombination event may have occurred within the homologous parts of exon 2.
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Affiliation(s)
- T V Lebedeva
- HLA Laboratory, American Red Cross Blood Services, Dedham, MA 02026, USA. lebedevat@usa. redcross.org
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31
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Sidney J, Southwood S, Sette A. Classification of A1- and A24-supertype molecules by analysis of their MHC-peptide binding repertoires. Immunogenetics 2005; 57:393-408. [PMID: 16003466 DOI: 10.1007/s00251-005-0004-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2005] [Accepted: 05/12/2005] [Indexed: 11/30/2022]
Abstract
At the functional level, the majority of human leukocyte antigen (HLA) class I MHC variants can be classified into about ten different major groups, or supertypes, characterized by overlapping peptide binding motifs and repertoires. Previous studies have detailed the peptide binding specificity of the HLA A2, A3, B7, and B44 supertypes, and predicted, on the basis of MHC pocket structures, known motifs, or the sequence of T cell epitopes, the existence of the HLA A1 and A24 supertypes. Direct experimental validation of the A1 and A24 supertypes, however, has been lacking. In the current study, the peptide-binding repertoires and main anchor specificities of several common HLA A molecules (A*0101, A*2301, A*2402, A*2601, A*2902, and A*3002) predicted to be members of the A1 or A24 supertypes were analyzed and defined using single amino acid substituted peptides and a large peptide library. Based on the present findings, the A1 supertype includes A*0101, A*2601, A*2902, and A*3002, whereas the A24 supertype includes A*2301 and A*2402. Interestingly, A*2902 is associated with a motif and peptide binding repertoire that overlaps significantly with those of all of the A1- and A24-supertype molecules studied, representing-to our knowledge-the first report of significant cross-reactivity among molecules belonging to different supertypes.
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Affiliation(s)
- John Sidney
- La Jolla Institute for Allergy and Immunology, 3030 Bunker Hill St., Ste. 326, San Diego, CA, 92109, USA.
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32
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Schreuder GMT, Hurley CK, Marsh SGE, Lau M, Fernandez-Vina M, Noreen HJ, Setterholm M, Maiers M. The HLA Dictionary 2004: a summary of HLA-A, -B, -C, -DRB1/3/4/5 and -DQB1 alleles and their association with serologically defined HLA-A, -B, -C, -DR and -DQ antigens. ACTA ACUST UNITED AC 2005; 65:1-55. [PMID: 15663741 DOI: 10.1111/j.1399-0039.2005.00350.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
This report presents serologic equivalents of human leucocyte antigen (HLA)-A, -B, -C, -DRB1, -DRB3, -DRB4, -DRB5 and -DQB1 alleles. The dictionary is an update of the one published in 2001. The data summarize equivalents obtained by the World Health Organization Nomenclature Committee for factors of the HLA System, the International Cell Exchange, the National Marrow Donor Program, recent publications and individual laboratories. This latest update of the dictionary is enhanced by the inclusion of results from studies performed during the 13th International Histocompatibility Workshop and from neural network analyses. A summary of the data as recommended serologic equivalents is presented as expert assigned types. The tables include remarks for alleles, which are or may be expressed as antigens with serologic reaction patterns that differ from the well-established HLA specificities. The equivalents provided will be useful in guiding searches for unrelated hematopoietic stem cell donors in which patients and/or potential donors are typed by either serology or DNA-based methods. The serological DNA equivalent dictionary will also aid in typing and matching procedures for organ transplant programs whose waiting lists of potential donors and recipients comprise of mixtures of serologic and DNA-based typings. The tables with HLA equivalents and a questionnaire for submission of serologic reaction patterns for poorly identified allelic products will be made available through the WMDA web page: www.worldmarrow.org. and in the near future also in a searchable form on the IMGT/HLA database.
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Affiliation(s)
- G M Th Schreuder
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands.
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33
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Nesci S, Iliescu A, Buffi O, Sista T, Luchetti MM, Gabrielli A, Rinaldi G. A novel HLA-Cw*16 allele, Cw*160102, identified by cloning and sequencing. TISSUE ANTIGENS 2005; 65:580-1. [PMID: 15896209 DOI: 10.1111/j.1399-0039.2005.00416.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Affiliation(s)
- S Nesci
- Laboratorio di Tipizzazione Tissutale, Patolgia Clinica, AO San Salvatore, Pesaro 61100, Italy.
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34
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Witter K, Volgger A, Zahn R, Scholz S, Albert ED. Bone marrow donor routine HLA typing identified a novel B*07 allele, B*0734, confirmed by allele-specific DNA cycle sequencing. ACTA ACUST UNITED AC 2005; 65:497-9. [PMID: 15853907 DOI: 10.1111/j.1399-0039.2005.00390.x] [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] [Indexed: 11/28/2022]
Abstract
In this article, we report the identification of a new human leukocyte antigen-B allele in a sample that was tested in our routine typing for bone marrow donors. This novel allele officially designed B*0734 was found in a female donor of Bavarian Caucasoid origin (Laboratory code 121036). The search for unrelated bone marrow donors was initiated by the Aktion Knochenmarkspende Bayern. In comparison to the common B*070201, B*0734 differs at four nucleotide positions, 412 (G-->A), 539 (G-->T), 559 (G-->A) and 560 (A-->C) causing three amino acid substitutions, at postion 138 Asp-->Asn, at position 180 Arg-->Leu and at position 187 Glu-->Thr.
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Affiliation(s)
- K Witter
- Laboratory of Immunogenetics, University Munich, Paul-Heyse-Strasse 33, 80336 Munich, Germany.
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35
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Witter K, Zahn R, McNicholas A, Volgger A, Albert ED. A novel HLA-B*55 allele, HLA-B*5514, found in a DNA sample derived from a bone marrow donor. ACTA ACUST UNITED AC 2005; 65:500-2. [PMID: 15853908 DOI: 10.1111/j.1399-0039.2005.00393.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this study, we report the identification of a new human leucocyte antigen-B (HLA-B) allele in a sample that was found in our routine typing. This novel allele, officially designed HLA-B*5514, was found in a male donor of Bavarian Caucasoid origin (Laboratory code: 117562) typed in order for a request of the bone marrow donor registry Aktion Knochenmarkspende Bayern. Although this novel allele was added to the HLA-B*55 family by the Nomenclature Committee, the next related alleles were found in the HLA-B*56 group; HLA-B*5612 differing in six positions from HLA-B*5514 is the closest related allele.
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Affiliation(s)
- K Witter
- Laboratory of Immunogenetics, University Munich, Paul-Heyse-Strasse 33, 80336 Munich, Germany.
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36
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Schreuder GMT, Hurley CK, Marsh SGE, Lau M, Fernandez-Vina MA, Noreen HJ, Setterholm M, Maiers M. HLA dictionary 2004: summary of HLA-A, -B, -C, -DRB1/3/4/5, -DQB1 alleles and their association with serologically defined HLA-A, -B, -C, -DR, and -DQ antigens. Hum Immunol 2005; 66:170-210. [PMID: 15695003 DOI: 10.1016/j.humimm.2004.09.017] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2004] [Accepted: 09/30/2003] [Indexed: 11/20/2022]
Abstract
This report presents serologic equivalents of human leukocyte antigen (HLA)-A, -B, -C, -DRB1, -DRB3, -DRB4, -DRB5, and -DQB1 alleles. The dictionary is an update of the one published in 2001. The data summarize equivalents obtained by the World Health Organization (WHO) Nomenclature Committee for Factors of the HLA System, the International Cell Exchange (UCLA), the National Marrow Donor Program, recent publications, and individual laboratories. This latest update of the dictionary is enhanced by the inclusion of results from studies performed during the 13th International Histocompatibility Workshop and from neural network analyses. A summary of the data as recommended serologic equivalents is presented as expert assigned types. The tables include remarks for alleles, which are or may be expressed as antigens with serologic reaction patterns that differ from the well-established HLA specificities. The equivalents provided will be useful in guiding searches for unrelated hematopoietic stem cell donors in which patients and/or potential donors are typed by either serology or DNA-based methods. The serological-DNA equivalent dictionary will also aid in typing and matching procedures for organ transplant programs whose waiting lists of potential donors and recipients are comprised of mixtures of serologic and DNA-based typings. The tables with HLA equivalents and a questionnaire for submission of serologic reaction patterns for poorly identified allelic products will be made available through the World Marrow Donor Association Web page (www.worldmarrow.org).
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Affiliation(s)
- Geziena M Th Schreuder
- World Marrow Donor Association Quality Assurance and IT Working Groups Leiden, The Netherlands.
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37
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Lv F, Gao J, Lin J, Liu Z, Xu Y, Ren X, Zhang H, Xu A. Characterization of a novel HLA-DQB1 allele, DQB1*020102. ACTA ACUST UNITED AC 2005; 64:619-20. [PMID: 15496208 DOI: 10.1111/j.1399-0039.2004.00320.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel human leukocyte antigen (HLA)-DQB1 allele, DQB1*020102, was detected in a 28-year-old woman of Han ethnic in Guangzhou, China. Compared with HLA-DQB1*020101 and HLA-DQB1*0202, they differed in only one nucleotide at the position 167 (C to T) of exon 2, which was a highly conserved position. This is a synonymous mutation, which does not cause any change in the amino acid sequence of mature protein.
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Affiliation(s)
- F Lv
- Key Laboratory of Genetic Engineer of MOE, Department of Biochemistry, College of Life Sciences, Sun Yat-sen (Zhongshan) University, Guangzhou, China
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38
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Shao W, Tang J, Dorak MT, Song W, Lobashevsky E, Cobbs CS, Wrensch MR, Kaslow RA. Molecular typing of human leukocyte antigen and related polymorphisms following whole genome amplification. ACTA ACUST UNITED AC 2005; 64:286-92. [PMID: 15304010 DOI: 10.1111/j.0001-2815.2004.00295.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Reliable, high-resolution genotyping of human leukocyte antigen (HLA) polymorphisms is often compromised by DNA samples of suboptimal quality or limited quantity. We tested the feasibility of molecular typing for variants at HLA and neighboring loci using whole genome amplification (WGA) strategy facilitated by the Phi29 DNA polymerase. With little (5-100 ng) starting genomic DNA of varying quality and source materials, WGA was deemed successful in 167 of 169 DNA from 47 cell lines, 100 European Americans, and 22 native Africans. The Phi29-processed DNA provided adequate templates for polymerase chain reaction (PCR)-based analyses of several HLA (A, B, C, DRB1, and DQB1) and related loci (HFE, MICA, and 10 microsatellites) in the 6p24.3-6p21.3 region, with PCR amplicons ranging from 92 to 2200 bp. Five different genotyping techniques resolved and confirmed 364 genotypes when both original and Phi29-processed DNA worked in PCRs. General population genetic analyses provided additional evidence that WGA may represent a reliable and simple approach to securing ample genomic DNA for typing HLA, MICA, and related variants.
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Affiliation(s)
- W Shao
- Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL, USA
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39
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Abstract
In this report, we describe the identification of a novel HLA-DPB1 allele, DPB1*0102, which was first found in a 27-year-old woman and was later detected again in another person, from the Han population of China. According to the nucleotide alignment, DPB1*0102 was the most similar to DPB1*0202, with only one nucleotide substitution from A to G at position 192 among three closely related alleles--DPB1*0202, DPB1*2401 and DPB1*0501. This substitution was a non-synonymous one, which caused a change of amino acid from E to K at codon 69 of DP beta-chain in the mature protein.
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Affiliation(s)
- F Lv
- Key Laboratory of Genetic Engineer of MOE, Department of Biochemistry, College of Life Sciences, Sun Yat-sen (Zhongshan) University, Guangzhou, Guangdong, China
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40
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Schreuder GMT, Hurley CK, Marsh SGE, Lau M, Fernandez-Vina M, Noreen HJ, Setterholm M, Maiers M. The HLA Dictionary 2004: a summary of HLA-A, -B, -C, -DRB1/3/4/5 and -DQB1 alleles and their association with serologically defined HLA-A, -B, -C, -DR and -DQ antigens. Int J Immunogenet 2005; 32:19-69. [PMID: 15686589 DOI: 10.1111/j.1744-313x.2005.00497.x] [Citation(s) in RCA: 17] [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
This report presents serological equivalents of HLA-A, -B, -C, -DRB1, -DRB3, -DRB4, -DRB5 and -DQB1 alleles. The dictionary is an update of that published in 2001. The data summarize equivalents obtained by the World Health Organization Nomenclature Committee for Factors of the HLA System, the International Cell Exchange (UCLA), the National Marrow Donor Program (NMDP), recent publications and individual laboratories. This latest update of the dictionary is enhanced by the inclusion of results from studies performed during the 13th International Histocompatibility Workshop and from neural network analyses. A summary of the data as recommended serological equivalents is presented as expert assigned types. The tables include remarks for alleles, which are or may be expressed as antigens with serological reaction patterns that differ from the well-established HLA specificities. The equivalents provided will be useful in guiding searches for unrelated haematopoietic stem cell donors in which patients and/or potential donors are typed by either serology or DNA-based methods. The serological DNA equivalent dictionary will also aid in typing and matching procedures for organ transplant programmes whose waiting lists of potential donors and recipients comprise mixtures of serological and DNA-based typings. The tables with HLA equivalents and a questionnaire for submission of serological reaction patterns for poorly identified allelic products will be made available through the WMDA web page (http://www.worldmarrow.org) and, in the near future, also in a searchable form on the IMGT/HLA database.
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Affiliation(s)
- G M Th Schreuder
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, the Netherlands.
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Lebedeva TV, Ohashi M, Huang A, Vasconcellos S, Flesch S, Yu N. Emerging new alleles suggest high diversity of HLA-C locus. ACTA ACUST UNITED AC 2005; 65:101-6. [PMID: 15663747 DOI: 10.1111/j.1399-0039.2005.00333.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Human leukocyte antigen (HLA)-C has only recently emerged as an important transplantation antigen and as a receptor for natural killer cells. Over the last few years, sequence-based typing (SBT) revealed the true diversity of HLA-C locus; however, the frequency at which new alleles are detected still remains high. During routine SBT of 3500 samples for the National Marrow Donor Program, we have identified 20 new HLA-C alleles reported in this article in 26 individuals. New variants have been characterized by direct sequencing of polymerase chain reaction product obtained by allele-specific amplification of potential new alleles. Most of the new alleles carry coding substitutions of residues located within the antigen-binding groove. The substitutions are predominantly located in the alpha2-helix which is consistent with the unique to HLA-C conservation of alpha1-helix. Seven new alleles, or 35%, have been identified in African Americans, two of them in three and four individuals each, suggesting that these alleles may not be rare. This observation reflects the fact that the minority groups, previously under-represented in the HLA research pools subjected to SBT, now begin to emerge as a main source of new HLA-C alleles. This study further confirms that HLA-C locus is at least as polymorphic as HLA-A and HLA-B.
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Affiliation(s)
- T V Lebedeva
- HLA Laboratory, American Red Cross Blood Services, New England Region, Dedham, MA 02026, USA.
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Mayor NP, Cox ST, McWhinnie AJ, Argüello JR, Shaw BE, Little AM, Madrigal JA, Marsh SGE. Sequence of a novel HLA-A*0301 intronic variant (A*03010103). ACTA ACUST UNITED AC 2005; 65:107-9. [PMID: 15663748 DOI: 10.1111/j.1399-0039.2005.00340.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report here the full-length sequence of a novel HLA-A*0301 allele, A*03010103, which differs from A*03010101 by a single nucleotide substitution (G>T) at position 492 within intron 2. The variant was originally identified by Reference Strand-mediated Conformational Analysis (RSCA) and was confirmed by cloning and sequencing. The difference in RSCA mobility between A*03010101 and A*03010103 demonstrates the sensitivity of RSCA to detect single nucleotide polymorphisms.
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Affiliation(s)
- N P Mayor
- The Anthony Nolan Research Institute, The Royal Free Hospital, Hampstead, London, UK
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43
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TAP1 and TAP2 allele frequencies in a SNaPshot™: No evidence for allelic prevalence in patients with head and neck squamous-cell carcinoma compared with Dutch controls. Hum Immunol 2005. [DOI: 10.1016/j.humimm.2004.10.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Lebedeva TV, Ohashi M, Huang A, Vasconcellos S, Alosco SM, Kempenich J, Yu N. HLA-Cw*1214 allele arisen via recombination between HLA-Cw*070201 and HLA-Cw*120201. TISSUE ANTIGENS 2004; 64:703-5. [PMID: 15546344 DOI: 10.1111/j.1399-0039.2004.00331.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Allelic polymorphism of the major histocompatibility complex arises mostly from gene conversion. Intralocus gene conversion usually involves limited fragments of DNA, whereas recombination involving large fragments of DNA is considered to be a rare event. During routine sequencing-based typing of donors for the National Marrow Donor Program, a new HLA-C allele was identified in a Caucasian donor. The allele, HLA-Cw*1214, proved to be the product of recombination between HLA-Cw*070201 and HLA-Cw*120201. Exons 1, 2, the 3' end of exon 3 and exon 4 (with one mismatch) belong to HLA-Cw*120201, whereas part of exon 3 belongs to HLA-Cw*070201. Sequencing with primers based in exon 2 and exon 3 showed that intron 2 of the new allele also belonged completely to HLA-Cw*1202. The recombination event apparently occurred within exon 3 with the first point of recombination somewhere between codons 92 and 134 and the second one between codons 157 and 181.
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Affiliation(s)
- T V Lebedeva
- HLA Laboratory, American Red Cross Blood Services, New England Region, Dedham, MA 02026, USA.
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Zino E, Di Terlizzi S, Carugo C, Baggi L, Galli A, Bonini C, Rossini S, Mazzi B, Fleischhauer K. Rapid detection of all HLA-B*27 alleles (B*2701-B*2725) by group-specific polymerase chain reaction. ACTA ACUST UNITED AC 2004; 63:88-92. [PMID: 14651530 DOI: 10.1111/j.1399-0039.2004.00158.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Human leucocyte antigen-B*27 is strongly associated with a number of rheumatic diseases, including ankylosing spondylitis and reactive arthritis. Targeted detection of the B*27 group by molecular methods is hampered by the extreme heterogeneity of the serological B*27 group. Here, we describe a simple, rapid sequence-specific primer-based method for detection of all 28 B*27 alleles defined to date. The method involves an initial screening with two sequence-specific polymerase chain reactions (PCRs), which has to be followed by two additional PCR amplifications in samples carrying a few rare subtypes of B*27, B*4202 or B*7301. The described protocol should be useful for laboratories involved in diagnostics and research of rheumatoid diseases.
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Affiliation(s)
- E Zino
- HLA Tissue Typing Laboratory, Immunohematology and Transfusion Medicine Service, IRCCS Istituto Scientifico H.S. Raffaele, Milan, Italy
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Abstract
Variation in the ovine DQA2 gene was investigated in approximately 2,000 sheep from six breeds. Fragments of DNA containing the ovine DQA2 exon 2 were amplified using PCR. Single-strand conformational polymorphism analysis and DNA sequence analysis were employed to detect genetic variation. Twenty-three nucleic acid sequences, encoding 22 DQA2 amino acid sequences, were identified. This increases the number of alleles identified from 10 to 23. In some cases, three or four unique sequences were isolated from individual sheep, suggesting that these DQA2 sequences may represent two loci. Phylogenetic tree analysis revealed that 5 of these 23 sequences were more closely related to cattle DQA3 or DQA4 sequences than to other sheep DQA2 sequences. These sequences clustered together and were called DQA2-like to differentiate them from other DQA2 sequences. There was no evidence of DQA5-like sequences in sheep. Information theory-based analysis indicated that some of the DQA2-like sequences had low information content at splice sites, suggesting that these alleles may have low functional activity. Allelic lineages were observed not only at the DQA2 locus, but also at the DQA2-like locus, supporting the trans-species mode of evolution of MHC genes. Comparison of the allelic sequences suggests that polymorphism seems to have arisen largely by point mutation and gene conversion, and a recent gene conversion event seems to have occurred between the DQA2 and DQA2-like loci. The high level of sequence polymorphism detected and varied number of loci demonstrate the extensive diversity of the ovine DQA2 gene.
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Affiliation(s)
- J G H Hickford
- Animal and Food Sciences Division, Lincoln University, Canterbury, New Zealand.
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Lv F, Gao J, Lin J, Liu Z, Fu Y, Lin B, Liu Y, Xu A. A novel HLA-DRB1 allele, DRB1*0449, with a rare point mutation found in the Han population of Guangdong China. ACTA ACUST UNITED AC 2004; 63:612-3. [PMID: 15140046 DOI: 10.1111/j.0001-2815.2004.00215.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Anovel HLA-DRB1 allele, DRB1*0449, has been identified in the Han population of Guangdong Province of China. Compared with DRB1*0406, it has only one single-nucleotide mutation from G to A at position 18 of exon 2, which causes a change in the protein sequence from valine to isoleucine at codon 11 of DR beta chain.
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Affiliation(s)
- F Lv
- Department of Biochemistry, College of Life Sciences, Sun Yat-sen University, Guangzhou, People's Republic of China
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Witter K, Wölpl A, Zahn R, Klein HG, Albert ED. Sequence-based typing confirmed a novel B*40 allele, B*4046, which was identified through sequence-specific oligonucleotide hybridization routine typing*. ACTA ACUST UNITED AC 2004; 63:378-81. [PMID: 15009811 DOI: 10.1111/j.0001-2815.2004.00156.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this paper, we report the identification of a new human leucocyte antigen-B (HLA-B) allele in a sample which has participated in a search for unrelated bone marrow donors which was initiated by the Aktion Knochenmarkspende Bayern. This novel allele officially designed B*4046 was detected by different low-resolution sequence-specific oligonucleotide typings not matching to known allele combinations in a female Caucasoid individual. Confirming the presence of a novel allele by sequence-based typing, the closest-related allele B*400103 differs from the new B*4046 allele by three mutations. This results in an amino acid substitution from threonine to alanine in B*4046 at codon 65, while codon 68 remains conserved and codon 69 "AAG" lysine is replaced by "GAG" glutamic acid in B*4046.
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Affiliation(s)
- K Witter
- Labor für Immungenetik, University Munich, Paul-Heyse-Strasse 33, 80336 Munich, Germany.
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Sidney J, Southwood S, Pasquetto V, Sette A. Simultaneous prediction of binding capacity for multiple molecules of the HLA B44 supertype. THE JOURNAL OF IMMUNOLOGY 2004; 171:5964-74. [PMID: 14634108 DOI: 10.4049/jimmunol.171.11.5964] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We selected for study a set of B44-supertype molecules collectively represented in >40% of the individuals in all major ethnicities (B*1801, B*4001, B*4002, B*4402, B*4403, and B*4501). The peptide-binding specificity of each molecule was characterized using single amino acid substitution analogues and nonredundant peptide libraries. In all cases, only peptide ligands with glutamic acid in position 2 were preferred. At the C terminus, each allele was associated with a unique but broad pattern of preferences, but all molecules tolerated hydrophobic/aliphatic (leucine, isoleucine, valine, methionine), aromatic (tyrosine, phenylalanine, tryptophan), and small (alanine, glycine, threonine) residues. Secondary anchor motifs were also defined for all molecules. Together, these features were used to define a B44 supermotif and a novel algorithm for calculating degeneracy scores that can be used to predict B44-supertype degenerate binders. Approximately 90% of the peptides with a B44 supermotif degeneracy score of >10 bound at least three of the six B44-supertype molecules studied with high affinity. Finally, a number of peptides derived from hepatitis B and C viruses, HIV, and Plasmodium falciparum have been identified that have degenerate B44 supertype-binding capacity. Taken together, these findings have important implications for epitope-based approaches to vaccination, immunotherapy, and the monitoring of immune responses.
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Affiliation(s)
- John Sidney
- Division of Translational Immunology and Biodefense, La Jolla Institute for Allergy and Immunology, San Diego, CA 92121, USA
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Leffell MS, Fallin MD, Hildebrand WH, Cavett JW, Iglehart BA, Zachary AA. HLA alleles and haplotypes among the lakota sioux: report of the ASHI minority workshops, part III. Hum Immunol 2004; 65:78-89. [PMID: 14700599 DOI: 10.1016/j.humimm.2003.10.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Human leukocyte antigen (HLA) class I and II alleles were defined for 302 Lakota Sioux American Indians as part of the American Society for Histocompatibility and Immunogenetics coordinated studies on minority populations. The study group was comprised of adult volunteers from the Cheyenne River and Ogala Sioux tribes residing, respectively, on the Cheyenne River and Pine Ridge Reservations in South Dakota. Of the participants, 263 (87%) claimed full American Indian ancestry through both maternal and paternal grandparents. The study group included 25 nuclear families that were informative for genotyping. HLA phenotypes from 202 adults with no other known first-degree relative included in the study were used for calculation of allele and haplotype frequencies by maximum likelihood estimation. HLA-A, -B, and -Cw alleles were found to be in Hardy Weinberg equilibrium. Deviation from equilibrium was observed for DRB1 alleles (p=0.01), but could be attributed to the sample size and the occurrence of some genotypes with low expected frequencies. Polymorphism among the Sioux was limited with four to seven alleles comprising >80% of those observed at each locus. Several alleles were found at high frequency (0.05-0.30) among the Sioux that are also prevalent in other Native Americans and Alaska Natives, including: A*2402, *3101, and *0206; B*3501,*3901, *5101, and *2705; Cw*0702, *0404, and *03041; DRB1*0407, *0404, *1402, and *16021; and DQB1*0301, *0302, and *0402. DRB1*0811, which has been only previously described in Navajo and Tlingit Indians, was found to occur at a frequency of 0.119 among the Sioux. Two new alleles were defined among the Sioux: Cw*0204 and DRB1*040703, which were found in two and four individuals, respectively. In the haplotype analyses, significant linkage disequilibrium (p<0.00001) was seen in all pairwise comparisons of loci and numerous two and three locus haplotypes were found to have strong, positive linkage disequilibrium values. The two most common extended haplotypes among the Sioux, determined by maximum likelihood estimation and genotyping were: A*31012, B*3501, Cw*0404, DRB1*0407; and A*24021, B*3501, Cw*0404, DRB1*0404.
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Affiliation(s)
- Mary S Leffell
- Department of Medicine, Johns Hopkins University School of Public Health, Baltimore, MD 21205, USA.
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