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  • 1
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Skin grafts transplanted from B10.HTT donors onto (A.TL × B10)F1 recipients are rapidly rejected despite the fact that the B10.HTT and A.TL strains should be carrying the sameH-2 chromosomes and that both the donor and the recipient contain the B10 genome. The rejection is accompanied by a production of cytotoxic antibodies against antigens controlled by theIr region of theH-2 complex. These unexpected findings are interpreted as evidence for a third histocompatibility locus in theH-2 complex,H-2I, located in theIr region close toH-2K. The B10.HTT and A.TL strains are postulated to differ at this hypothetical locus, and the difference between the two strains is explained as resulting from a crossing over between theH-2 t1 andH-2 s chromosomes in the early history of the B10.HTT strain. TheH-2 genotypes of the B10.HTT and A.TL strains are assumed to beH-2K s Ir s / k Ss k H-2D d andH-2K s Ir k Ss k H-2D d , respectively. Thus, theH-2 chromosomes of the two strains differ only in a portion of theIr region, including theH-2I locus. The B10.HTT(H-2 tt) and B10.S(7R)(H-2 th) strains differ in a relatively minor histocompatibility locus, possibly residing in theTla region outside of theH-2 complex.
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Immunogenetics 21 (1985), S. 193-197 
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Immunogenetics 19 (1984), S. 169-173 
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Immunogenetics 2 (1975), S. 141-150 
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Antisera (B10.129×A)F1 anti-P and (B10×A)F1 anti-B10.P contain antibodies that define, in the PVP hemagglutination test, an antigen originally described as G or H-2.7. Of the independentH-2 haplotypes, the H-2.7 antigen is present inf, j, k, p, ands. In addition, the antisera also contain a weak cytotoxic antibody, distinct from anti-H-2.7. The cytotoxic antibody reacts with antigens controlled by theK orI regions. The hemagglutinating H-2.7 antibody does not have cytotoxic activity. The genetic determinant coding for antigen H-2.7 can be mapped into the chromosomal segment between theS andD regions. The H-2.7 antigen thus serves as a marker for a new region of theH-2 complex. The locus coding for antigen H-2.7 is designatedH-2 G and the correspondingH-2 regionG. The H-2.7 antigen has a tissue distribution distinct from that of the H-2 antigens controlled by theK orD regions. So far it could be detected primarily on erythrocytes.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Immunogenetics 3 (1976), S. 489-497 
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Six semicongenic lines carrying differentt haplotypes on the background of strain C57BL/10Sn (B10.t strains) and a (B10 ×T/t 0) F1 hybrid were tested against one another in the mixed lymphocyte reaction (MLR) and cell-mediated lymphocytotoxicity (CML) assays. In every instance, the MLR results paralleled those of the CML typing: strain combinations giving a positive result in one assay gave a positive result in the second; combinations in which no response was observed in the MLR assay also failed to kill target cells specifically in the CML assay. Furthermore, the MLR and CML results were concordant with the results of the serological typing of these strains, as reported previously by us. The combined results suggest sharing ofH-2 hyplotypes between B10.t12 and B10.t32, between B10.t6 and B10.tw1, and between B10.tw2 and (B10. ×T/t 0) F1. These data support the conclusion, reached in our previous publication, that members of the samet-complementation group, with few exceptions, shareH-2 haplotypes.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Immunogenetics 40 (1994), S. 21-26 
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract This report describes our continued efforts to elucidate the genetic fine structure of the central portion of the mouse chromosome (Chr) 2. Mice from our panel of 28 Chr 2 congenic strains were tested: (1) for the presence of the antigens which stimulate Chr 2-reactive lymphocyte clones in mixed lymphocyte reactive lymphocyte clones in mixed lymphocyte reaction (MLR); (2) for the antigens of histocompatibility (H) genes H-42 a and H-45 a as determined by allograft rejection; and (3) for their ability to respond to the H-Y antigen in a cell-mediated lysis assay. The results obtained in this study have allowed additional mapping of immunoogically involved Chr 2 genes. The gene encoding the antigen which stimulates lymphocyte clone 1C11 can be considered wholly different from other Chr 2 H genes on the basis of chromosomal recombination. We have assigned the symbol H-48 to this gene. The following gene order has been established: [H-3, B2m, pa], we, [H-42, H-48], H-45, IR-H-Y, Hd-1, un, H-13, A w. The order of the bracketed genes is not known. H-44 maps centromeric to IR-H-Y. The genes encoding the antigens that stimulate lymphocyte clones 2G7, 2C10, 1F6, 1B10, and 1H10 map centromeric to H-45.
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  • 7
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The human HLA-DR3 haplotype consists of two functional genes (DRB1*03 and DRB3*01) and one pseudogene (DRB2), arranged in the order DRB1... DRB2... DRB3 on the chromosome. To shed light on the origin of the haplotype, we sequenced 1480 nucleotides of the HLA-DRB2 gene and aong stretches of two other genes, Gogo-DRB2 from a gorilla, “Sylvia” and Patr-DRB2 from a chimpanzee, “Hugo”. All three sequences (HLA-DRB2, Gogo-DRB2, Patr-DRB2) are pseudogenes. The HLA-DRB2 and Gogo-DRB2 pseudogenes lack exon 2 and contain a twenty-nucleotide deletion in exon 3, which destroys the correct translational reading frame and obliterates the highly conserved cysteine residue at position 173. The Patr-DRB2 pseudogene lacks exons 1 and 2; it does not contain the twenty-nucleotide deletion, but does contain a characteristic duplication of that part of exon 6 which codes for the last four amino acid residues of the cytoplasmic region. When the nucleotide sequences of these three genes are compared to those of all other known DRB genes, the HLA-DRB2 is seen as most closely related to Gogo-DRB2, indicating orthologous relationship between the two sequences. The Patr-DRB2 gene is more distantly related to these two DRB2 genes and whether it is orthologous to them is uncertain. The three genes are in turn most closely related to HLA-DRBVI (the pseudogene of the DR2 haplotype) and Patr-DRB6 (another pseudogene of the Hugo haplotype), followed by HLA-DRB4 (the functional but nonpolymorphic gene of the DR4 haplotype). These relationships suggest that these six genes evolved from a common ancestor which existed before the separation of the human, gorilla, and chimpanzee lineages. The DRB2 and DRB6 have apparently been pseudogenes for at least six million years (myr). In the human and the gorilla haplotype, the DRB2 pseudogene is flanked on each side by what appear to be related genes. Apparently, the DR3 haplotype has existed in its present form for more than six myr.
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  • 8
    Publication Date: 1984-01-01
    Print ISSN: 0093-7711
    Electronic ISSN: 1432-1211
    Topics: Biology , Medicine
    Published by Springer
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  • 9
    Publication Date: 1994-01-01
    Print ISSN: 0093-7711
    Electronic ISSN: 1432-1211
    Topics: Biology , Medicine
    Published by Springer
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  • 10
    Publication Date: 1974-12-01
    Print ISSN: 0093-7711
    Electronic ISSN: 1432-1211
    Topics: Biology , Medicine
    Published by Springer
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