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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Maki, K. Karasuyama, H. Komagata, Y. Miyazaki, J. I. Kodaira, Y. Mabuchi, A. Yokomuro, K. Sunaga, S. Ikuta, K. |
| Description | Author Affiliation: Maki K ( Department of Disease-Related Gene Regulation Research (Sandoz) Faculty of Medicine, The Univerisity of Tokyo, Japan.); |
| Abstract | The interleukin 7 receptor (IL-7R) plays a crucial role in early B- and T-cell development. It consists of a unique a chain and a common gamma chain [IL-2 receptor gamma chain (IL-2Rgamma)]. Gene inactivation of IL-7, IL-7R, and IL-2Rgamma resulted in severe impairment of B and T lymphopoiesis in mice. In addition, IL-2Rgamma-deficient mice lack gammadelta T cells in the skin and have the impaired development of natural killer (NK) cells and intraepithelial lymphocytes. To explore the role of IL-7/IL-7R system in gammadelta T- and NK-cell development, we have generated and analyzed IL-7R-deficient mice. gammadelta T cells were absent from skin, gut, liver, and spleen in the deficient mice. In contrast, alphabeta T and B cells were detected in reduced, but certain, numbers, and NK cells developed normally. The gammadelta T-cell development in fetal and adult thymus was also completely blocked. These results clearly demonstrate that the signal from IL-7R is indispensable for gammadelta T-cell development in both thymic and extrathymic pathways. On the contrary, it is suggested that NK-cell development requires cytokine(s) other than IL-7. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 14 |
| Volume Number | 93 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1996-08-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Antigens, CD Genetics Physiology Killer Cells, Natural Immunology Receptors, Antigen, T-Cell, Gamma-delta Receptors, Interleukin T-Lymphocytes Animals B-Lymphocytes Crosses, Genetic DNA Primers Embryo, Mammalian Flow Cytometry Genomic Library Immunologic Deficiency Syndromes Intestines Liver Lymphocytes Mice Mice, Inbred C57BL Mice, Inbred Strains Mice, Mutant Strains Molecular Sequence Data Polymerase Chain Reaction Receptors, Interleukin-7 Restriction Mapping Skin Spleen Stem Cells Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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