Epicutaneous immunization induces alphabeta T-cell receptor CD4 CD8 double-positive non-specific suppressor T cells that inhibit contact sensitivity via transforming growth factor-beta

Immunology. 2005 May;115(1):42-54. doi: 10.1111/j.1365-2567.2005.02127.x.


Since it was previously shown that protein antigens applied epicutaneously in mice induce allergic dermatitis mediated by production of T helper 2 (Th2) cytokines we postulated that this might induce suppression of Th1 immunity. Here we show that epicutaneous immunization of normal mice with a different protein antigen applied on the skin in the form of a patch induces a state of subsequent antigen-non-specific unresponsiveness caused by suppressor T cells (Ts) that inhibit sensitization and elicitation of effector T-cell responses. Suppression is transferable in vivo by alphabeta-T-cell receptor CD4(+) CD8(+) double positive lymphocytes harvested from lymphoid organs of skin patched animals and are not major histocompatibility complex-restricted nor antigen specific. Both CD25(+) and CD25(-) CD4(+) CD8(+) T cells are able to suppress adoptive transfer of Th1 effector cells mediating cutaneous contact sensitivity. In vivo treatment with monoclonal antibodies showed that the cytokines interleukin (IL)-4, IL-10 and transforming growth factor-beta (TGF-beta) are involved in the induction of the Ts cells. Additionally, using IL-10(-/-) mice we found that IL-10 is involved in skin induced tolerance. Further in vitro experiments showed that lymph node cells of skin tolerized mice non-specifically suppress [(3)H]thymidine incorporation by antigen-stimulated immune cells and this effect can be abolished by adding anti-TGF-beta, but not anti-IL-4 nor anti-IL-10 antibodies. These studies indicate the crucial role of TGF-beta in skin induced tolerance due to non-antigen-specific Ts cells and also show that IL-4, IL-10 and TGF-beta play an important role in the induction of epicutaneously induced Ts cell suppression.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Administration, Cutaneous
  • Adoptive Transfer
  • Animals
  • CD4-Positive T-Lymphocytes / immunology
  • CD8-Positive T-Lymphocytes / immunology
  • Cytokines / immunology
  • Dermatitis, Contact / immunology
  • Dermatitis, Contact / prevention & control*
  • Dose-Response Relationship, Immunologic
  • Immune Tolerance / immunology*
  • Immunization / methods
  • Lymph Nodes / immunology
  • Male
  • Mice
  • Mice, Inbred BALB C
  • Mice, Inbred CBA
  • Receptors, Antigen, T-Cell, alpha-beta / analysis*
  • Skin / immunology
  • T-Lymphocytes, Regulatory / immunology*
  • Transforming Growth Factor beta / immunology*


  • Cytokines
  • Receptors, Antigen, T-Cell, alpha-beta
  • Transforming Growth Factor beta