PMID- 8692964 OWN - NLM STAT- MEDLINE DCOM- 19960829 LR - 20190501 IS - 0027-8424 (Print) IS - 1091-6490 (Electronic) IS - 0027-8424 (Linking) VI - 93 IP - 14 DP - 1996 Jul 9 TI - Interleukin 7 receptor-deficient mice lack gammadelta T cells. PG - 7172-7 AB - 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. FAU - Maki, K AU - Maki K AD - Department of Disease-Related Gene Regulation Research (Sandoz) Faculty of Medicine, The Univerisity of Tokyo, Japan. FAU - Sunaga, S AU - Sunaga S FAU - Komagata, Y AU - Komagata Y FAU - Kodaira, Y AU - Kodaira Y FAU - Mabuchi, A AU - Mabuchi A FAU - Karasuyama, H AU - Karasuyama H FAU - Yokomuro, K AU - Yokomuro K FAU - Miyazaki, J I AU - Miyazaki JI FAU - Ikuta, K AU - Ikuta K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Proc Natl Acad Sci U S A JT - Proceedings of the National Academy of Sciences of the United States of America JID - 7505876 RN - 0 (Antigens, CD) RN - 0 (DNA Primers) RN - 0 (Receptors, Antigen, T-Cell, gamma-delta) RN - 0 (Receptors, Interleukin) RN - 0 (Receptors, Interleukin-7) SB - IM MH - Animals MH - Antigens, CD/*genetics/*physiology MH - B-Lymphocytes/immunology MH - Base Sequence MH - Crosses, Genetic MH - DNA Primers MH - Embryo, Mammalian MH - Flow Cytometry MH - Genomic Library MH - Immunologic Deficiency Syndromes/genetics/immunology MH - Intestines/immunology MH - Killer Cells, Natural/*immunology MH - Liver/immunology MH - Lymphocytes/immunology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Inbred Strains MH - Mice, Mutant Strains MH - Molecular Sequence Data MH - Polymerase Chain Reaction MH - *Receptors, Antigen, T-Cell, gamma-delta MH - Receptors, Interleukin/*genetics/*physiology MH - Receptors, Interleukin-7 MH - Restriction Mapping MH - Skin/immunology MH - Spleen/immunology MH - Stem Cells MH - T-Lymphocytes/*immunology PMC - PMC38955 EDAT- 1996/07/09 00:00 MHDA- 1996/07/09 00:01 PMCR- 1997/01/09 CRDT- 1996/07/09 00:00 PHST- 1996/07/09 00:00 [pubmed] PHST- 1996/07/09 00:01 [medline] PHST- 1996/07/09 00:00 [entrez] PHST- 1997/01/09 00:00 [pmc-release] AID - 10.1073/pnas.93.14.7172 [doi] PST - ppublish SO - Proc Natl Acad Sci U S A. 1996 Jul 9;93(14):7172-7. doi: 10.1073/pnas.93.14.7172.