Abstract

Homeostasis in the immune system depends on a balance between the responses that control infection and tumour growth and the reciprocal responses that prevent inflammation and autoimmune diseases. It is now recognized that regulatory T cells have a crucial role in suppressing immune responses to self-antigens and in preventing autoimmune diseases. Evidence is also emerging that regulatory T cells control immune responses to bacteria, viruses, parasites and fungi. This article explores the possibility that regulatory T cells can be both beneficial to the host, through limiting the immunopathology associated with anti-pathogen immune responses, and beneficial to the pathogen, through subversion of the protective immune responses of the host.

Author affiliations

1. Immune Regulation Research Group, Department of Biochemistry, Trinity College, Dublin 2, Ireland.
   Email: kingston.mills@tcd.ie

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