Author
Listed:
- Li-Fan Lu
(Dartmouth Medical School and the Norris Cotton Cancer Center
Immunology, Dartmouth Medical School and the Norris Cotton Cancer Center)
- Evan F. Lind
(Dartmouth Medical School and the Norris Cotton Cancer Center
Immunology, Dartmouth Medical School and the Norris Cotton Cancer Center)
- David C. Gondek
(Dartmouth Medical School and the Norris Cotton Cancer Center
Immunology, Dartmouth Medical School and the Norris Cotton Cancer Center)
- Kathy A. Bennett
(Dartmouth Medical School and the Norris Cotton Cancer Center
Immunology, Dartmouth Medical School and the Norris Cotton Cancer Center)
- Michael W. Gleeson
(Dartmouth Medical School and the Norris Cotton Cancer Center
Immunology, Dartmouth Medical School and the Norris Cotton Cancer Center)
- Karina Pino-Lagos
(Dartmouth Medical School and the Norris Cotton Cancer Center
Immunology, Dartmouth Medical School and the Norris Cotton Cancer Center)
- Zachary A. Scott
(Dartmouth Medical School and the Norris Cotton Cancer Center
Immunology, Dartmouth Medical School and the Norris Cotton Cancer Center)
- Anthony J. Coyle
(MedImmune)
- Jennifer L. Reed
(MedImmune)
- Jacques Van Snick
(Université de Louvain, Brussels Branch)
- Terry B. Strom
(Beth Israel Deaconess Medical Center, Harvard Medical School)
- Xin Xiao Zheng
(Beth Israel Deaconess Medical Center, Harvard Medical School)
- Randolph J. Noelle
(Dartmouth Medical School and the Norris Cotton Cancer Center
Immunology, Dartmouth Medical School and the Norris Cotton Cancer Center)
Abstract
Contrary to the proinflammatory role of mast cells in allergic disorders, the results obtained in this study establish that mast cells are essential in CD4+CD25+Foxp3+ regulatory T (TReg)-cell-dependent peripheral tolerance. Here we confirm that tolerant allografts, which are sustained owing to the immunosuppressive effects of TReg cells, acquire a unique genetic signature dominated by the expression of mast-cell-gene products. We also show that mast cells are crucial for allograft tolerance, through the inability to induce tolerance in mast-cell-deficient mice. High levels of interleukin (IL)-9—a mast cell growth and activation factor—are produced by activated TReg cells, and IL-9 production seems important in mast cell recruitment to, and activation in, tolerant tissue. Our data indicate that IL-9 represents the functional link through which activated TReg cells recruit and activate mast cells to mediate regional immune suppression, because neutralization of IL-9 greatly accelerates allograft rejection in tolerant mice. Finally, immunohistochemical analysis clearly demonstrates the existence of this novel TReg–IL-9–mast cell relationship within tolerant allografts.
Suggested Citation
Li-Fan Lu & Evan F. Lind & David C. Gondek & Kathy A. Bennett & Michael W. Gleeson & Karina Pino-Lagos & Zachary A. Scott & Anthony J. Coyle & Jennifer L. Reed & Jacques Van Snick & Terry B. Strom & X, 2006.
"Mast cells are essential intermediaries in regulatory T-cell tolerance,"
Nature, Nature, vol. 442(7106), pages 997-1002, August.
Handle:
RePEc:nat:nature:v:442:y:2006:i:7106:d:10.1038_nature05010
DOI: 10.1038/nature05010
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