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Class I MHC-Linked Determinants Expressed on Activated T Cells

  • R. Fauchet
  • D. J. Charron
  • O. Bouhallier
  • N. Genetet
  • G. Merdrignac
  • P. Turmel
  • D. Bourel
  • B. Genetet

Abstract

Sensitized T-cells in mixed leukocyte culture possess HLA-D like antigens absent from nonactivated resting T cells. These antigens are synthesized by allostimulated T cells [1]. T cell expression of HLA- DR antigens has been demonstrated by several investigators using a variety of methods [2–6]. On activated T cells, specific anti-HLA-DR antisera showed unexplained reactivity, distinguishable from HLA-DR reactivity [7]. This antiblast activity had also been found in sera from multiparous women in which no anti-HLA-A, B, or DR antibodies were detectable [8]. Gazit and co-workers postulated the existence of a genetic system specific to activated T cells, in close linkage disequilibrium with the HLA system. They named this the HT system and suggested that it might be a human correlate of the mouse TLa region. Two possible alleles of the postulated HT locus (HT1 or K, HT3 or SF48) were identified [9, 10]. The genetic polymorphism of the HT locus has recently been confirmed [11]. The present study was undertaken to determine if sera from multiparous women clearly detected new determinants on blast cells different from the classical HLA-A, B, C antigens and similar to HTs. We also carried out this study to investigate the specificity of such determinants and their correlation with the HLA system.

Keywords

Multiparous Woman Mixed Leukocyte Culture Pool Platelet Close Linkage Disequilibrium Healthy Unrelated Donor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1984

Authors and Affiliations

  • R. Fauchet
    • 1
  • D. J. Charron
    • 2
  • O. Bouhallier
    • 1
  • N. Genetet
    • 1
  • G. Merdrignac
    • 1
  • P. Turmel
    • 2
  • D. Bourel
    • 1
    • 2
  • B. Genetet
    • 3
  1. 1.Laboratoire d’HistocompatibilitéCentre Régional de Transfusion SanguineRennesFrance
  2. 2.Groupe Universitaire de Recherche en Immunologie Fondamentale et AppliquéeRennesFrance
  3. 3.Laboratoire d’Immuno-génétique Hôpital Pitié-SalpétrièreParisFrance

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