Thymic and Peripheral Differentiation of Regulatory T Cells

Hyang Mi Lee, Jhoanne Lynne Bautista, Chyi Song Hsieh

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

56 Scopus citations

Abstract

The development of regulatory T (Treg) cells is essential for the maintenance of immune tolerance and homeostasis. Here, we review recent studies that have advanced our understanding of Treg cell differentiation. In the thymus, TCR specificity to self-antigen appears to be a primary determinant for Treg cell lineage commitment, with c-Rel being an important factor that links T cell receptor (TCR) engagement and Foxp3 expression, along with cytokines and costimulatory molecules. It is also clear that postthymic events shape the peripheral Treg cell population. This includes preferential maintenance of Treg cells specific to self-antigens presented in the periphery, as well as the de novo generation of Treg cells from conventional Foxp3 - T cells. The process of peripheral Treg cell differentiation shares some features with thymic Treg cell development, but there are notable differences. Together, thymic and peripheral Treg cell differentiation appear to generate an " imprint" of both self- and foreign antigens in the peripheral Treg cell population to provide dominant tolerance.

Original languageEnglish
Title of host publicationAdvances in Immunology
PublisherAcademic Press Inc.
Pages25-71
Number of pages47
DOIs
StatePublished - 2011

Publication series

NameAdvances in Immunology
Volume112
ISSN (Print)0065-2776
ISSN (Electronic)1557-8445

Keywords

  • Development
  • Periphery
  • Regulatory T cells
  • Thymus
  • Tolerance

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