Review
Nature Reviews Immunology 5, 793-806 (October 2005) | doi:10.1038/nri1708
Regulation of MHC class II gene expression by the class II transactivator
Walter Reith1, Salomé LeibundGut-Landmann1,2 & Jean-Marc Waldburger1 About the authors
Abstract
MHC class II molecules are pivotal for the adaptive immune system, because they guide the development and activation of CD4+ T helper cells. Fulfilling these functions requires that the genes encoding MHC class II molecules are transcribed according to a strict cell-type-specific and quantitatively modulated pattern. This complex gene-expression profile is controlled almost exclusively by a single master regulatory factor, which is known as the class II transactivator. As we discuss here, differential activation of the three independent promoters that drive expression of the gene encoding the class II transactivator ultimately determines the exquisitely regulated pattern of MHC class II gene expression.
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Author affiliations
- Department of Pathology and Immunology, University of Geneva Medical School, Centre Médical Universitaire, 1 Rue Michel-Servet, CH-1211, Geneva, Switzerland.
- Immunobiology Laboratory, Cancer Research UK London Research Institute, 44 Lincoln's Inn Fields, London WC2A 3PX, UK.
Correspondence to: Walter Reith1 Email: walter.reith@medecine.unige.ch
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