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| Content Provider | PubMed Central |
|---|---|
| Author | Schott, Eckart Roberto, Bonasio Ploegh, Hidde L. |
| Abstract | Natural killer cells gauge the absence of self class I MHC on susceptible target cells by means of inhibitory receptors such as members of the Ly49 family. To initiate killing by natural killer cells, a lack of inhibitory signals must be accompanied by the presence of activating ligands on the target cell. Although natural killer cell–mediated rejection of class I MHC–deficient bone marrow (BM) grafts is a matter of record, little is known about the targeting in vivo of specific cellular subsets by natural killer cells. We show here that development of class I MHC–negative thymocytes is delayed as a result of natural killer cell toxicity after grafting of a class I MHC–positive host with class I MHC–negative BM. Double positive thymocytes that persist in the presence of natural killer cells display an unusual T cell receptor–deficient phenotype, yet nevertheless give rise to single positive thymocytes and yield mature class I MHC–deficient lymphocytes that accumulate in the class I MHC–positive host. The resulting class I MHC–deficient CD8 T cells are functional and upon activation remain susceptible to natural killer cell toxicity in vivo. Reconstitution of class I MHC–deficient BM precursors with H2-Kb by retroviral transduction fully restores normal thymic development. |
| Related Links | http://dx.doi.org/10.1084/jem.20030918 |
| Ending Page | 1224 |
| Page Count | 12 |
| Starting Page | 1213 |
| File Format | |
| ISSN | 00221007 |
| e-ISSN | 15409538 |
| Journal | The Journal of Experimental Medicine |
| Issue Number | 8 |
| Volume Number | 198 |
| Language | English |
| Publisher | The Rockefeller University Press |
| Publisher Date | 2003-10-20 |
| Access Restriction | Open |
| Rights Holder | The Rockefeller University Press |
| Subject Keyword | Immunology Immunology and Allergy Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology |
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