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| Content Provider | PubMed Central |
|---|---|
| Author | Briner, T. J. Kuo, M. C. Keating, K. M. Rogers, B. L. Greenstein, J. L. |
| Abstract | T cells control the majority of antigen-specific immune responses. Therefore, influencing the activation of the T-cell response in order to modify immune responsiveness is an obvious therapeutic goal. We have used a mouse model of response to Fel d I, the major cat protein allergen in humans, to explore the ability of peptides derived from Fel d I to inhibit T-cell-dependent immune responses to the peptides themselves and to larger polypeptides. T cells from B6CBAF1 mice respond to the Fel d I peptide IPC-2 after challenge with IPC-2. However, subcutaneous tolerization with IPC-2 prevents this response as measured by production of interleukins 2 and 4 and interferon gamma. Fel d I immunization of B6D2F1 mice results in T-cell responses primarily to one peptide derived from Fel d I. Injecting this peptide in soluble form inhibits T-cell activation (as measured by interleukin 2 production) and antibody production in Fel d I-primed animals when they are subsequently challenged with peptide in adjuvant. Most of the cat-allergic human T-cell response to Fel d I is specific for two peptides on one of its two chains. Immunization of B6CBAF1 mice with recombinant Fel d I chain 1 results in T-cell responses to the same peptides. Subcutaneous administration of these two peptides, which contain some, but not all, of the T-cell epitopes from Fel d I chain I, decreases the T-cell response to the entire recombinant Fel d I chain 1. The ability to tolerize T-cell responses with subcutaneous injections suggests a practical approach to treating human diseases with peptides containing T-cell epitopes. |
| Starting Page | 7608 |
| File Format | |
| ISSN | 10916490 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 16 |
| Volume Number | 90 |
| Language | English |
| Publisher Date | 1993-08-15 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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