Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

Regulatory T cells can play an important role in both the induction and maintenance of tolerance to donor alloantigens in vivo. Regulatory activity specific for donor alloantingens is enriched amongst CD4+CD25+ T cells in some settings and can be induced by manipulating the immune system before transplantation. Donor alloantigen-specific CD4+CD25+ regulatory T cells can control aggressive CD4+ as well as CD8+ T cells thereby preventing rejection and can mediate linked unresponsiveness. In vivo, donor alloantigen specific CD4+CD25+ cells are dependent on interleukin (IL)10 and CTLA4 for functional activity. These populations of regulatory cells induced by manipulating the adult immune system therefore have properties in common with naturally occurring regulatory T cells. The active regulation/suppression of immune responsiveness to donor alloantigens offers a way to silence aggressive immune responses directed to donor alloantigens thereby preventing damage to the graft from being inflicted. The generation of regulatory T cells with defined alloantigen specificity could provide dynamic control of rejection responses and offers a potential route to permanent graft survival without the need for life-long non-specific immunosuppression.

Type

Journal article

Journal

Novartis Found Symp

Publication Date

2003

Volume

252

Pages

177 - 188

Keywords

Animals, CD4-Positive T-Lymphocytes, CD8-Positive T-Lymphocytes, Graft Rejection, Humans, Immunosuppression, Isoantigens, Lymphocyte Depletion, Models, Immunological, T-Lymphocytes, Transplantation Immunology, Transplantation, Homologous