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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Koseki, H. Zijlstra, M. Taniguchi, M. Adachi, Y. |
| Description | Author Affiliation: Adachi Y ( Division of Molecular Immunology, School of Medicine, Chiba University, Japan.); |
| Abstract | V alpha 14+ T cells are a unique subset expressing an invariant T-cell antigen receptor alpha chain encoded by V alpha 14 and J alpha 281 gene fragments with a 1-nt N region. Most invariant V alpha 14+ T cells develop in extrathymic organs, independent of thymus, and expand at a high frequency in various mouse strains regardless of major histocompatibility complex (MHC) haplotype. In this paper, we show that the positive selection of invariant V alpha 14+ T cells requires a beta 2-microglobulin-associated MHC class I-like molecule not linked to the MHC on chromosome 17. This was determined by linkage analysis on DNA from recombinant mice generated by crossing a C57BL/6 mouse with a wild mouse, Mus musculus molossinus, that is negative for invariant V alpha 14 TCR expression. However, the peptide transporter TAP1 is not necessary for positive selection of invariant V alpha 14+ T cells, indicating the direct recognition of the MHC class I-like molecule without peptide by the invariant V alpha 14 TCR. Further, experiments with bone marrow-chimeric mice show that invariant V alpha 14+ T cells in the periphery are selected by bone marrow cells, suggesting a unique lineage of V alpha 14+ T cells differentiated through a selection process distinct from that of conventional alpha beta TCR+ T cells. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 4 |
| Volume Number | 92 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1995-03-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Antigens, Differentiation, B-Lymphocyte Bone Marrow Immunology Histocompatibility Antigens Class II Histocompatibility Antigens Class I T-Lymphocytes Animals Bone Marrow Cells Cell Differentiation Mice Mice, Inbred C57BL Receptors, Antigen, T-Cell Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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