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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Byrne, M. C. Whitters, M. J. Greenfield, E. Collins, M. O'hara, R. M. Kuchroo, V. K. Dorf, M. E. Atsumi, Y. Connolly, J. B. |
| Description | Author Affiliation: Kuchroo VK ( Department of Pathology, Harvard Medical School, Boston MA 02115.); |
| Abstract | Antigen-specific suppressor T-cell hybridomas release soluble suppressor factors (TsF) in the supernatant that modulate both in vivo delayed-type hypersensitivity and in vitro plaque-forming cell responses in an antigen-specific manner. To study the relationship between the T-cell receptor (TcR) and TsF, we developed a series of TcR alpha- or TcR beta- expression variants from suppressor T-cell hybridomas that expressed the CD3-TcR alpha/beta complex. We demonstrate that loss of TcR alpha but not TcR beta mRNA was accompanied by the concomitant loss of suppressor bioactivity. Homologous transfection of TcR alpha cDNA into a TcR alpha- beta+ clone reconstituted both CD3-TcR expression and suppressor function. Furthermore, suppressor activity from TcR beta- variants was specifically absorbed by antigen and anti-TcR alpha antibodies, but not by anti-CD3 or anti-TcR beta affinity columns. These data directly establish a role for the TcR alpha chain in suppressor T-cell function and suggest that the TcR alpha chain is part of the antigen-specific TsF molecule. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 19 |
| Volume Number | 88 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1991-10-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Receptors, Antigen, T-Cell, Alpha-beta Physiology Suppressor Factors, Immunologic Immunology T-Lymphocytes, Regulatory Animals Antibody Formation Antigens Antigens, CD3 Antigens, Differentiation, T-Lymphocyte Blotting, Northern DNA Genetics Gene Expression Hybridomas Hypersensitivity, Delayed Mice Molecular Sequence Data Oligonucleotides Chemistry Polymerase Chain Reaction RNA, Messenger Receptors, Antigen, T-Cell Transfection Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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