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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Lightstone, L. Hargreaves, R. Aichinger, G. Bobek, G. Lombardi, G. Lechler, R. Peterson, M. |
| Description | Author Affiliation: Lightstone L ( Department of Immunology, Commonwealth Building, Royal Postgraduate Medical School, Du Cane Road, London, W12 0NN, England. llightst@rpms.ac.uk); |
| Abstract | The independent influences of invariant chain (Ii) and HLA-DM molecules on the array of naturally processed peptides displayed by HLA-DR molecules were studied using transfected cell lines. The absence of Ii led to an altered set of HLA-DR-bound peptides as judged by the discriminating responses of alloreactive T cell clones. While most T cell clones raised against DR+Ii+DM+ peripheral blood mononuclear cells (PBMC) failed to respond to DR+Ii-DM- cells, T cell clones raised against DR+Ii-DM- transfectants were not stimulated by DR+Ii+DM+ cells. Furthermore, coexpression of HLA-DM with HLA-DR1 in the absence of Ii augmented responses of anti-PBMC T cell clones but inhibited allorecognition by T cell clones raised against DR+Ii-DM- transfectants. The conformational integrity of the class II molecules, as judged by serology, suggests that the patterns of reactivity of the T cell clones reflect specificity for different alloantigen-bound peptides. Hence, discordant regulation of expression of major histocompatibility complex class II, Ii, and HLA-DM molecules in vivo may lead to the display of novel self-peptides and possible interruption of self-tolerance. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 11 |
| Volume Number | 94 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1997-06-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Antigens, Differentiation, B-Lymphocyte Biosynthesis HLA-D Antigens HLA-DR Antigens Chemistry Histocompatibility Antigens Class II Antigen-Presenting Cells Immunology Antigens, CD Cell Line Epitopes Kinetics Protein Conformation Recombinant Proteins T-Lymphocytes Transfection Comparative Study Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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