1.IL-2 and IL-15 dependent thymic development of Foxp3-expressing regulatory T lymphocytes.
Cécile APERT ; Paola ROMAGNOLI ; Joost P M VAN MEERWIJK
Protein & Cell 2018;9(4):322-332
Immunosuppressive regulatory T lymphocytes (Treg) expressing the transcription factor Foxp3 play a vital role in the maintenance of tolerance of the immune-system to self and innocuous non-self. Most Treg that are critical for the maintenance of tolerance to self, develop as an independent T-cell lineage from common T cell precursors in the thymus. In this organ, their differentiation requires signals from the T cell receptor for antigen, from co-stimulatory molecules, as well as from cytokine-receptors. Here we focus on the cytokines implicated in thymic development of Treg, with a particular emphasis on the roles of interleukin-2 (IL-2) and IL-15. The more recently appreciated involvement of TGF-β in thymic Treg development is also briefly discussed. Finally, we discuss how cytokine-dependence of Treg development allows for temporal, quantitative, and potentially qualitative modulation of this process.
Animals
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Cell Differentiation
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genetics
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Cytokines
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immunology
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Forkhead Transcription Factors
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genetics
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immunology
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Gene Expression Regulation
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Immune Tolerance
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genetics
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Interleukin-15
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genetics
;
immunology
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Interleukin-2
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genetics
;
immunology
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Mice
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Receptors, Antigen, T-Cell
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genetics
;
immunology
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T-Lymphocytes, Regulatory
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immunology
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Transforming Growth Factor beta
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genetics
;
immunology