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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Koseki, H. Moriwaki, K. Taniguchi, M. Imai, K. Sado, T. Nakayama, F. |
| Description | Author Affiliation: Koseki H ( Division of Molecular Immunology, School of Medicine, Chiba University, Japan.); |
| Abstract | Nucleotide sequences of VJ (variable-joining) junctional regions of V14+ alpha-chain T-cell receptor genes show that most V alpha 14+ T cells use one alpha chain (V alpha 14J alpha 281 with a one-nucleotide N region, which is frequently used in keyhole limpet hemocyanin-specific suppressor T-cell hybridomas) in unprimed mice. Moreover, the frequency of this alpha-chain expression was greater than 1.5% of the total alpha chains found in laboratory strains, including B10 congenic mice. This is about 10(4) times higher than was expected. The V14J281 alpha-chain expression was relatively low but was significant in CD4+/CD8+ immature thymocytes and became quite high in mature single-positive T cells, implying that this alpha chain is selected during T-cell maturation. V14J281 expression increased with time after birth and reached a maximum at around 5 weeks of age. The ligand seems to be a self molecule and to be present in laboratory strains but to be absent in a wild mouse, Mus musculus molossinus, because bone marrow chimeras clearly showed that bone marrow cells derived from Mus musculus molossinus negative for this alpha chain raised V14J281-positive T cells in a C57BL/6 environment. The above results suggest that there are some selection mechanisms for this cell type other than those for conventional alpha beta T cells and also that the homogenous VJ junction of the V14J281 alpha chain plays a pivotal role in the selection of the T cell and its ligand reactivity. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 14 |
| Volume Number | 87 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1990-08-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Receptors, Antigen, T-Cell Genetics T-Lymphocytes Immunology Animals Animals, Newborn Mice Mice, Inbred C57BL Mice, Inbred Strains Molecular Sequence Data Oligonucleotide Probes Polymerase Chain Reaction Ribonucleases Spleen Cytology Thymus Gland Transcription, Genetic Comparative Study Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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