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The Journal of Immunology, 2002, 169: 4850-4860.
Copyright © 2002 by The American Association of Immunologists

Homeostasis of Peripheral CD4+ T Cells: IL-2R{alpha} and IL-2 Shape a Population of Regulatory Cells That Controls CD4+ T Cell Numbers1

Afonso R. M. Almeida*, Nicolas Legrand*, Martine Papiernik{dagger} and António A. Freitas2,*

* Lymphocyte Population Biology, Unité de Recherche Associée Centre National de la Recherche Scientifique 1961, Institut Pasteur, and {dagger} Institut National de la Santé et de la Recherche Médicale Unité 345, Centre Hospitalo-Universitaire Necker, Paris, France

We show that the lymphoid hyperplasia observed in IL-2R{alpha}- and IL-2-deficient mice is due to the lack of a population of regulatory cells essential for CD4 T cell homeostasis. In chimeras reconstituted with bone marrow cells from IL-2R{alpha}-deficient donors, restitution of a population of CD25+CD4+ T cells prevents the chaotic accumulation of lymphoid cells, and rescues the mice from autoimmune disease and death. The reintroduction of IL-2-producing cells in IL-2-deficient chimeras establishes a population of CD25+CD4+ T cells, and restores the peripheral lymphoid compartments to normal. The CD25+CD4+ T cells regulated selectively the number of naive CD4+ T cells transferred into T cell-deficient hosts. The CD25+CD4+/naive CD4 T cell ratio and the sequence of cell transfer determines the homeostatic plateau of CD4+ T cells. Overall, our findings demonstrate that IL-2R{alpha} is an absolute requirement for the development of the regulatory CD25+CD4+ T cells that control peripheral CD4 T cell homeostasis, while IL-2 is required for establishing a sizeable population of these cells in the peripheral pools.




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J. Immunol., May 1, 2004; 172(9): 5287 - 5296.
[Abstract] [Full Text] [PDF]


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J. Immunol.Home page
B. H. Nelson
IL-2, Regulatory T Cells, and Tolerance
J. Immunol., April 1, 2004; 172(7): 3983 - 3988.
[Abstract] [Full Text] [PDF]


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Proc. Natl. Acad. Sci. USAHome page
M. Schmidt-Supprian, J. Tian, E. P. Grant, M. Pasparakis, R. Maehr, H. Ovaa, H. L. Ploegh, A. J. Coyle, and K. Rajewsky
Differential dependence of CD4+CD25+ regulatory and natural killer-like T cells on signals leading to NF-{kappa}B activation
PNAS, March 30, 2004; 101(13): 4566 - 4571.
[Abstract] [Full Text] [PDF]


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J. Immunol.Home page
B. Martin, A. Banz, B. Bienvenu, C. Cordier, N. Dautigny, C. Becourt, and B. Lucas
Suppression of CD4+ T Lymphocyte Effector Functions by CD4+CD25+ Cells In Vivo
J. Immunol., March 15, 2004; 172(6): 3391 - 3398.
[Abstract] [Full Text] [PDF]


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Int ImmunolHome page
M. Fujimoto, H. Tsutsui, O. Xinshou, M. Tokumoto, D. Watanabe, Y. Shima, T. Yoshimoto, H. Hirakata, I. Kawase, K. Nakanishi, et al.
Inadequate induction of suppressor of cytokine signaling-1 causes systemic autoimmune diseases
Int. Immunol., February 1, 2004; 16(2): 303 - 314.
[Abstract] [Full Text] [PDF]


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J. Biol. Chem.Home page
S. Xiao, S.-s. J. Sung, S. M. Fu, and S.-T. Ju
Combining Fas Mutation with Interleukin-2 Deficiency Prevents Colitis and Lupus: IMPLICATING INTERLEUKIN-2 FOR AUTO-REACTIVE T CELL EXPANSION AND Fas LIGAND FOR COLON EPITHELIAL CELL DEATH
J. Biol. Chem., December 26, 2003; 278(52): 52730 - 52738.
[Abstract] [Full Text] [PDF]


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Proc. Natl. Acad. Sci. USAHome page
J. Ermann and C. G. Fathman
Costimulatory signals controlling regulatory T cells
PNAS, December 23, 2003; 100(26): 15292 - 15293.
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J. Leukoc. Biol.Home page
T. R. Malek
The main function of IL-2 is to promote the development of T regulatory cells
J. Leukoc. Biol., December 1, 2003; 74(6): 961 - 965.
[Abstract] [Full Text]


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J. Immunol.Home page
M. A. Burchill, C. A. Goetz, M. Prlic, J. J. O'Neil, I. R. Harmon, S. J. Bensinger, L. A. Turka, P. Brennan, S. C. Jameson, and M. A. Farrar
Distinct Effects of STAT5 Activation on CD4+ and CD8+ T Cell Homeostasis: Development of CD4+CD25+ Regulatory T Cells versus CD8+ Memory T Cells
J. Immunol., December 1, 2003; 171(11): 5853 - 5864.
[Abstract] [Full Text] [PDF]


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J. Immunol.Home page
Q. Tang, K. J. Henriksen, E. K. Boden, A. J. Tooley, J. Ye, S. K. Subudhi, X. X. Zheng, T. B. Strom, and J. A. Bluestone
Cutting Edge: CD28 Controls Peripheral Homeostasis of CD4+CD25+ Regulatory T Cells
J. Immunol., October 1, 2003; 171(7): 3348 - 3352.
[Abstract] [Full Text] [PDF]


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J. Immunol.Home page
A. Antov, L. Yang, M. Vig, D. Baltimore, and L. Van Parijs
Essential Role for STAT5 Signaling in CD25+CD4+ Regulatory T Cell Homeostasis and the Maintenance of Self-Tolerance
J. Immunol., October 1, 2003; 171(7): 3435 - 3441.
[Abstract] [Full Text] [PDF]


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JEMHome page
H. von Boehmer
Dynamics of Suppressor T Cells: In Vivo Veritas
J. Exp. Med., September 15, 2003; 198(6): 845 - 849.
[Full Text] [PDF]


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JEMHome page
S. Fisson, G. Darrasse-Jeze, E. Litvinova, F. Septier, D. Klatzmann, R. Liblau, and B. L. Salomon
Continuous Activation of Autoreactive CD4+ CD25+ Regulatory T Cells in the Steady State
J. Exp. Med., September 2, 2003; 198(5): 737 - 746.
[Abstract] [Full Text] [PDF]


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J. Immunol.Home page
C. Asseman, S. Read, and F. Powrie
Colitogenic Th1 Cells Are Present in the Antigen-Experienced T Cell Pool in Normal Mice: Control by CD4+ Regulatory T Cells and IL-10
J. Immunol., July 15, 2003; 171(2): 971 - 978.
[Abstract] [Full Text] [PDF]


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JEMHome page
T. Barthlott, G. Kassiotis, and B. Stockinger
T Cell Regulation as a Side Effect of Homeostasis and Competition
J. Exp. Med., February 17, 2003; 197(4): 451 - 460.
[Abstract] [Full Text] [PDF]




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