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Nicholas RE, Sandstrom K, Anderson JL, Smith WR, Wetzel M, Banerjee P, Janaka SK, Evans DT. KIR3DL05 and KIR3DS02 Recognition of a Nonclassical MHC Class I Molecule in the Rhesus Macaque Implicated in Pregnancy Success. Front Immunol 2022; 13:841136. [PMID: 35401580 PMCID: PMC8984097 DOI: 10.3389/fimmu.2022.841136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 03/01/2022] [Indexed: 11/13/2022] Open
Abstract
Knowledge of the MHC class I ligands of rhesus macaque killer-cell Ig-like receptors (KIRs) is fundamental to understanding the role of natural killer (NK) cells in this species as a nonhuman primate model for infectious diseases, transplantation and reproductive biology. We previously identified Mamu-AG as a ligand for KIR3DL05. Mamu-AG is a nonclassical MHC class I molecule that is expressed at the maternal-fetal interface of the placenta in rhesus macaques similar to HLA-G in humans. Although Mamu-AG and HLA-G share similar molecular features, including limited polymorphism and a short cytoplasmic tail, Mamu-AG is considerably more polymorphic. To determine which allotypes of Mamu-AG serve as ligands for KIR3DL05, we tested reporter cell lines expressing five different alleles of KIR3DL05 (KIR3DL05*001, KIR3DL05*004, KIR3DL05*005, KIR3DL05*008 and KIR3DL05*X) for responses to target cells expressing eight different alleles of Mamu-AG. All five allotypes of KIR3DL05 responded to Mamu-AG2*01:01, two exhibited dominant responses to Mamu-AG1*05:01, and three had low but detectable responses to Mamu-AG3*03:01, -AG3*03:02, -AG3*03:03 and -AG3*03:04. Since KIR3DL05*X is the product of recombination between KIR3DL05 and KIR3DS02, we also tested an allotype of KIR3DS02 (KIR3DS02*004) and found that this activating KIR also recognizes Mamu-AG2*01:01. Additional analysis of Mamu-AG variants with single amino acid substitutions identified residues in the α1-domain essential for recognition by KIR3DL05. These results reveal variation in KIR3DL05 and KIR3DS02 responses to Mamu-AG and define Mamu-AG polymorphisms that differentially affect KIR recognition.
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Affiliation(s)
- Rachel E. Nicholas
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Kjell Sandstrom
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Jennifer L. Anderson
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Willow R. Smith
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Molly Wetzel
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Priyankana Banerjee
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Sanath Kumar Janaka
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - David T. Evans
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, United States
- Wisconsin National Primate Research Center, University of Wisconsin-Madison, Madison, WI, United States
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Heijmans CMC, de Groot NG, Bontrop RE. Comparative genetics of the major histocompatibility complex in humans and nonhuman primates. Int J Immunogenet 2020; 47:243-260. [PMID: 32358905 DOI: 10.1111/iji.12490] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/01/2020] [Accepted: 04/12/2020] [Indexed: 12/13/2022]
Abstract
The major histocompatibility complex (MHC) is one of the most gene-dense regions of the mammalian genome. Multiple genes within the human MHC (HLA) show extensive polymorphism, and currently, more than 26,000 alleles divided over 39 different genes are known. Nonhuman primate (NHP) species are grouped into great and lesser apes and Old and New World monkeys, and their MHC is studied mostly because of their important role as animal models in preclinical research or in connection with conservation biology purposes. The evolutionary equivalents of many of the HLA genes are present in NHP species, and these genes may also show abundant levels of polymorphism. This review is intended to provide a comprehensive comparison relating to the organization and polymorphism of human and NHP MHC regions.
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Affiliation(s)
- Corrine M C Heijmans
- Department of Comparative Genetics and Refinement, Biomedical Primate Research Centre, Rijswijk, The Netherlands
| | - Natasja G de Groot
- Department of Comparative Genetics and Refinement, Biomedical Primate Research Centre, Rijswijk, The Netherlands
| | - Ronald E Bontrop
- Department of Comparative Genetics and Refinement, Biomedical Primate Research Centre, Rijswijk, The Netherlands.,Theoretical Biology and Bioinformatics, Utrecht University, Utrecht, The Netherlands
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Nomenclature report for killer-cell immunoglobulin-like receptors (KIR) in macaque species: new genes/alleles, renaming recombinant entities and IPD-NHKIR updates. Immunogenetics 2019; 72:37-47. [PMID: 31781789 DOI: 10.1007/s00251-019-01135-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 10/04/2019] [Indexed: 12/16/2022]
Abstract
The Killer-cell Immunoglobulin-like Receptors (KIR) are encoded by a diverse group of genes, which are characterized by allelic polymorphism, gene duplications, and recombinations, which may generate recombinant entities. The number of reported macaque KIR sequences is steadily increasing, and these data illustrate a gene system that may match or exceed the complexity of the human KIR cluster. This report lists the names of quality controlled and annotated KIR genes/alleles with all the relevant references for two different macaque species: rhesus and cynomolgus macaques. Numerous recombinant KIR genes in these species necessitate a revision of some of the earlier-published nomenclature guidelines. In addition, this report summarizes the latest information on the Immuno Polymorphism Database (IPD)-NHKIR Database, which contains annotated KIR sequences from four non-human primate species.
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Abstract
The increasing number of Killer Immunoglobulin-like Receptor (KIR) sequences available for non-human primate species and cattle has prompted development of a centralized database, guidelines for a standardized nomenclature, and minimum requirements for database submission. The guidelines and nomenclature are based on those used for human KIR and incorporate modifications made for inclusion of non-human species in the companion IPD-NHKIR database. Included in this first release are the rhesus macaque (Macaca mulatta), chimpanzee (Pan troglodytes), orangutan (Pongo abelii and Pongo pygmaeus), and cattle (Bos taurus).
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de Groot NG, Blokhuis JH, Otting N, Doxiadis GGM, Bontrop RE. Co-evolution of the MHC class I and KIR gene families in rhesus macaques: ancestry and plasticity. Immunol Rev 2016; 267:228-45. [PMID: 26284481 PMCID: PMC4544828 DOI: 10.1111/imr.12313] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Researchers dealing with the human leukocyte antigen (HLA) class I and killer immunoglobulin receptor (KIR) multi‐gene families in humans are often wary of the complex and seemingly different situation that is encountered regarding these gene families in Old World monkeys. For the sake of comparison, the well‐defined and thoroughly studied situation in humans has been taken as a reference. In macaques, both the major histocompatibility complex class I and KIR gene families are plastic entities that have experienced various rounds of expansion, contraction, and subsequent recombination processes. As a consequence, haplotypes in macaques display substantial diversity with regard to gene copy number variation. Additionally, for both multi‐gene families, differential levels of polymorphism (allelic variation), and expression are observed as well. A comparative genetic approach has allowed us to answer questions related to ancestry, to shed light on unique adaptations of the species’ immune system, and to provide insights into the genetic events and selective pressures that have shaped the range of these gene families.
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Affiliation(s)
- Natasja G de Groot
- Department of Comparative Genetics & Refinement, BPRC, Rijswijk, The Netherlands
| | - Jeroen H Blokhuis
- Department of Comparative Genetics & Refinement, BPRC, Rijswijk, The Netherlands
| | - Nel Otting
- Department of Comparative Genetics & Refinement, BPRC, Rijswijk, The Netherlands
| | - Gaby G M Doxiadis
- Department of Comparative Genetics & Refinement, BPRC, Rijswijk, The Netherlands
| | - Ronald E Bontrop
- Department of Comparative Genetics & Refinement, BPRC, Rijswijk, The Netherlands.,Theoretical Biology and Bioinformatics, Utrecht University, Utrecht, The Netherlands
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Expression patterns of killer cell immunoglobulin-like receptors (KIR) of NK-cell and T-cell subsets in Old World monkeys. PLoS One 2013; 8:e64936. [PMID: 23717676 PMCID: PMC3661512 DOI: 10.1371/journal.pone.0064936] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Accepted: 04/23/2013] [Indexed: 02/04/2023] Open
Abstract
The expression of killer cell immunoglobulin-like receptors (KIR) on lymphocytes of rhesus macaques and other Old World monkeys was unknown so far. We used our recently established monoclonal anti-rhesus macaque KIR antibodies in multicolour flow cytometry for phenotypic characterization of KIR protein expression on natural killer (NK) cells and T cell subsets of rhesus macaques, cynomolgus macaques, hamadryas baboons, and African green monkeys. Similar to human KIR, we found clonal expression patterns of KIR on NK and T cell subsets in rhesus macaques and differences between individuals using pan-KIR3D antibody 1C7 and antibodies specific for single KIR. Similar results were obtained with lymphocytes from the other studied species. Notably, African green monkeys show only a low frequency of KIR3D expressed on CD8+ αβT cells. Contrasting human NK cells are KIR-positive CD56bright NK cells and frequencies of KIR-expressing NK cells that are independent of the presence of their cognate MHC class I ligands in rhesus macaques. Interestingly, the frequency of KIR-expressing cells and the expression strength of KIR3D are correlated in γδ T cells of rhesus macaques and CD8+ αβT cells of baboons.
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Hellmann I, Letvin NL, Schmitz JE. KIR2DL4 copy number variation is associated with CD4+ T-cell depletion and function of cytokine-producing NK cell subsets in SIV-infected Mamu-A*01-negative rhesus macaques. J Virol 2013; 87:5305-10. [PMID: 23449795 PMCID: PMC3624297 DOI: 10.1128/jvi.02949-12] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 02/19/2013] [Indexed: 12/17/2022] Open
Abstract
Here, we demonstrate that KIR2DL4 copy number variation (CNV) is associated with CD4(+) T-cell decline and functionality of cytokine-producing NK cells during primary simian immunodeficiency virus (SIV) infection in Mamu-A*01(-) Indian-origin rhesus macaques, with higher KIR2DL4 copy numbers being associated with a better preservation of CD4(+) T cells and an increased gamma interferon (IFN-γ) production from stimulated cytokine-producing NK cell subsets during acute SIVmac251 infection. These findings underscore the crucial role of activating killer-cell immunoglobulin-like receptors (KIRs) in NK cell-mediated SIV responses during early SIV infection.
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Affiliation(s)
- Ina Hellmann
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
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Abstract
The Immuno Polymorphism Database (IPD), http://www.ebi.ac.uk/ipd/ is a set of specialist databases related to the study of polymorphic genes in the immune system. The IPD project works with specialist groups or nomenclature committees who provide and curate individual sections before they are submitted to IPD for online publication. The IPD project stores all the data in a set of related databases. IPD currently consists of four databases: IPD-KIR, contains the allelic sequences of killer-cell immunoglobulin-like receptors, IPD-MHC, a database of sequences of the major histocompatibility complex of different species; IPD-HPA, alloantigens expressed only on platelets; and IPD-ESTDAB, which provides access to the European Searchable Tumour Cell-Line Database, a cell bank of immunologically characterized melanoma cell lines. The data is currently available online from the website and FTP directory. This article describes the latest updates and additional tools added to the IPD project.
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Affiliation(s)
- James Robinson
- Anthony Nolan Research Institute, Royal Free Hospital, Pond Street, Hampstead, London NW3 2QG, UK
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Blokhuis JH, van der Wiel MK, Doxiadis GGM, Bontrop RE. The extreme plasticity of killer cell Ig-like receptor (KIR) haplotypes differentiates rhesus macaques from humans. Eur J Immunol 2011; 41:2719-28. [DOI: 10.1002/eji.201141621] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 05/16/2011] [Accepted: 06/20/2011] [Indexed: 11/09/2022]
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Positive selection of Toll-like receptor 2 polymorphisms in two closely related old world monkey species, rhesus and Japanese macaques. Immunogenetics 2011; 64:15-29. [PMID: 21744114 DOI: 10.1007/s00251-011-0556-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Accepted: 06/21/2011] [Indexed: 12/13/2022]
Abstract
Toll-like receptor 2 (TLR2) plays an important role in the recognition of a variety of pathogenic microbes. In the present study, we compared polymorphisms of TLR2 locus in two closely related old world monkey species, rhesus monkey (Macaca mulatta) and Japanese monkey (Macaca fuscata). By nucleotide sequencing of the third exon of TLR2 gene from 21 to 35 respective individuals, we could assign 17 haplotype combinations of 17 coding SNPs of ten non-synonymous and seven synonymous substitutions. A non-synonymous substitution at codon position 326 appeared to be differentially fixed in each species, asparagine for M. mulatta whereas tyrosine for M. fuscata, and may contribute to certain functional properties because it locates in the region contributing to ligand binding and interaction with dimerization partner of TLR2-TLR1 heterodimeric complex. Although TLR2 alleles have diverged to similar extent in both species, they have evolved in significantly different ways; TLR2 of M. fuscata has undergone purifying selection while the membrane-proximal part of the extracellular domain of M. mulatta TLR2 exhibits higher rates of non-synonymous substitutions, indicating a trace of Darwinian positive selection.
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Moreland AJ, Guethlein LA, Reeves RK, Broman KW, Johnson RP, Parham P, O'Connor DH, Bimber BN. Characterization of killer immunoglobulin-like receptor genetics and comprehensive genotyping by pyrosequencing in rhesus macaques. BMC Genomics 2011; 12:295. [PMID: 21645414 PMCID: PMC3125267 DOI: 10.1186/1471-2164-12-295] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Accepted: 06/07/2011] [Indexed: 11/10/2022] Open
Abstract
Background Human killer immunoglobulin-like receptors (KIRs) play a critical role in governing the immune response to neoplastic and infectious disease. Rhesus macaques serve as important animal models for many human diseases in which KIRs are implicated; however, the study of KIR activity in this model is hindered by incomplete characterization of KIR genetics. Results Here we present a characterization of KIR genetics in rhesus macaques (Macaca mulatta). We conducted a survey of KIRs in this species, identifying 47 novel full-length KIR sequences. Using this expanded sequence library to build upon previous work, we present evidence supporting the existence of 22 Mamu-KIR genes, providing a framework within which to describe macaque KIRs. We also developed a novel pyrosequencing-based technique for KIR genotyping. This method provides both comprehensive KIR genotype and frequency estimates of transcript level, with implications for the study of KIRs in all species. Conclusions The results of this study significantly improve our understanding of macaque KIR genetic organization and diversity, with implications for the study of many human diseases that use macaques as a model. The ability to obtain comprehensive KIR genotypes is of basic importance for the study of KIRs, and can easily be adapted to other species. Together these findings both advance the field of macaque KIRs and facilitate future research into the role of KIRs in human disease.
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Affiliation(s)
- Anna J Moreland
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
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Walter L. Major histocompatibility complex class-I-interacting natural killer cell receptors of nonhuman primates. J Innate Immun 2011; 3:236-41. [PMID: 21411971 DOI: 10.1159/000323932] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Accepted: 12/24/2010] [Indexed: 12/17/2022] Open
Abstract
Human natural killer (NK) cell receptors are known to be highly polymorphic, to show complex genetics and to be associated with susceptibility to a variety of immunological diseases. Nonhuman primates are used as important models of these diseases, yet the knowledge of nonhuman primate NK cell receptors and ligands is not as advanced as in humans. Recently published data indicated that diversity and polymorphism of NK cell receptors are similar between nonhuman primates and humans. Comparative genomics revealed instructive insights into the evolution and function of primate NK cell receptor genes and contributed to the understanding of how present-day NK cell receptors and their ligands have evolved. Here, I review the current knowledge of nonhuman primate NK cell receptors that interact with major histocompatibility complex class I proteins.
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Affiliation(s)
- Lutz Walter
- Primatengenetik, Deutsches Primatenzentrum, Leibniz-Institut für Primatenforschung, Göttingen, Deutschland.
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Chaichompoo P, Bostik P, Stephenson S, Udompunturuk S, Kobkitjaroen J, Pattanapanyasat K, Ansari AA. Multiple KIR gene polymorphisms are associated with plasma viral loads in SIV-infected rhesus macaques. Cell Immunol 2010; 263:176-87. [PMID: 20430371 DOI: 10.1016/j.cellimm.2010.03.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2010] [Revised: 02/26/2010] [Accepted: 03/18/2010] [Indexed: 11/29/2022]
Abstract
Innate immune mechanisms play a deterministic role in the rate of disease progression during acute infection in HIV infected humans and SIV infection of non-human primates. The role NK cells play in mediating such an effect has thus gained importance. One of the major sets of molecules that regulate NK cell function are the killer cell immunoglobulin-like molecules (KIR's). Our laboratory has previously shown an association of KIR3DL alleles 13 and 14 with high plasma viral loads in a cohort of SIV-infected rhesus macaques. To gain a more detailed understanding of the role of KIR polymorphisms, our laboratory herein conducted studies of three additional KIR loci and show that select KIR3DH alleles appear to be more strongly associated with high plasma viral loads than KIR3DL alleles 13 and 14. In addition, we herein document the existence of additional new alleles for the KIR1D, KIR2DL4, and the KIR3DH loci.
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Affiliation(s)
- Porntip Chaichompoo
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA
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Blokhuis JH, van der Wiel MK, Doxiadis GGM, Bontrop RE. The mosaic of KIR haplotypes in rhesus macaques. Immunogenetics 2010; 62:295-306. [PMID: 20204612 PMCID: PMC2858804 DOI: 10.1007/s00251-010-0434-3] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2009] [Accepted: 02/08/2010] [Indexed: 12/24/2022]
Abstract
To further refine and improve biomedical research in rhesus macaques, it is necessary to increase our knowledge concerning both the degree of allelic variation (polymorphism) and diversity (gene copy number variation) in the killer cell immunoglobulin-like receptor (KIR) gene cluster. Pedigreed animals in particular should be studied, as segregation data will provide clues to the linkage of particular KIR genes/alleles segregating on a haplotype and to its gene content as well. A dual strategy allowed us to screen the presence and absence of genes and the corresponding transcripts, as well as to track differences in transcription levels. On the basis of this approach, 14 diverse KIR haplotypes have been described. These haplotypes consist of multiple inhibitory and activating Mamu-KIR genes, and any gene present on one haplotype may be absent on another. This suggests that the cost of accelerated evolution by recombination may be the loss of certain framework genes on a haplotype.
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Affiliation(s)
- Jeroen H Blokhuis
- Department of Comparative Genetics and Refinement, Biomedical Primate Research Centre, Lange Kleiweg 139, 2288GJ, Rijswijk, The Netherlands.
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Kruse PH, Rosner C, Walter L. Characterization of rhesus macaque KIR genotypes and haplotypes. Immunogenetics 2010; 62:281-93. [PMID: 20195593 DOI: 10.1007/s00251-010-0433-4] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2009] [Accepted: 02/08/2010] [Indexed: 12/22/2022]
Abstract
Certain combinations of the killer immunoglobulin-like receptors (KIR) and major histocompatibility complex class I ligands in humans predispose carriers to a variety of diseases, requiring sophisticated genotyping of the highly polymorphic and diverse KIR and HLA genes. Particularly, KIR genotyping is challenging due to polymorphisms (allelic substitutions), genomic diversity (presence/absence of genes), and frequent duplications. Rhesus macaques are often used as important animal models of human diseases such as, e.g. AIDS. However, typing of rhesus macaque KIR genes has not been described so far. In this study, we report the identification of additional novel rhesus macaque KIR cDNA sequences and a sequence-specific KIR genotyping assay. From a cohort of four rhesus macaque families with a total of 70 individuals, we identified 25 distinct KIR genotypes. Segregation analyses of KIR genes and of two polymorphic microsatellite markers allowed the identification of 21 distinct KIR haplotypes in these families, with five to 11 segregating KIR genes per haplotype. Our analyses confirmed and extended knowledge on differential gene KIR gene content in macaques and indicate that rhesus macaque and human KIR haplotypes show a comparable level of diversity and complexity.
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Affiliation(s)
- Philip H Kruse
- Primate Genetics Laboratory, German Primate Center - Leibniz Institute for Primate Research, Göttingen, Germany
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Robinson J, Mistry K, McWilliam H, Lopez R, Marsh SGE. IPD--the Immuno Polymorphism Database. Nucleic Acids Res 2009; 38:D863-9. [PMID: 19875415 PMCID: PMC2808958 DOI: 10.1093/nar/gkp879] [Citation(s) in RCA: 155] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The Immuno Polymorphism Database (IPD) (http://www.ebi.ac.uk/ipd/) is a set of specialist databases related to the study of polymorphic genes in the immune system. The IPD project works with specialist groups or nomenclature committees who provide and curate individual sections before they are submitted to IPD for online publication. The IPD project stores all the data in a set of related databases. IPD currently consists of four databases: IPD-KIR, contains the allelic sequences of Killer-cell Immunoglobulin-like Receptors, IPD-MHC, is a database of sequences of the Major Histocompatibility Complex of different species; IPD-human platelet antigens, alloantigens expressed only on platelets and IPD-ESTDAB, which provides access to the European Searchable Tumour cell-line database, a cell bank of immunologically characterised melanoma cell lines. The data is currently available online from the website and ftp directory.
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Affiliation(s)
- James Robinson
- Anthony Nolan Research Institute, Royal Free Hospital, Hampstead, London NW3 2QG, UK
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