אסיף מאגר המחקר החקלאי

Possible association between IL-2 receptors and class I HLA molecules on T cells

Year:

1988

Source of publication :

Authors :

Volume :

141

Co-Authors:

Sharon, M., Cell Biology and Metabolism Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, United States
Gnarra, J.R., Cell Biology and Metabolism Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, United States
Baniyash, M., Cell Biology and Metabolism Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, United States
Leonard, W.J., Cell Biology and Metabolism Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, United States

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Abstract:

In the process of evaluating murine hybridomas for an antibody to the β-subunit of the IL-2R (p70) we identified an antibody that immunoprecipitated a 55- to 57-kDa complex from cross-linked lysates. We demonstrate that this complex is composed of IL-2 (15.5 kDa) cross-linked to the H chain of HLA class I (40 to 42 kDa), suggesting a molecular interaction between HLA class I molecules and IL-2R. Although the exact role of this association remains to be determined, the specific cross-linking of IL-2 to HLA class I Ag is intriguing in view of published claims for a role of HLA class I in OKT3-induced lymphocyte proliferation and in NK cell lytic activity.

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