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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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The relationship of MHC-peptide binding and T cell activation probed using chemically defined MHC class II oligomers.

A series of novel chemically defined soluble oligomers of the human MHC class II protein HLA-DR1 was constructed to probe the molecular requirements for initiation of T cell activation. MHC dimers, trimers, and tetramers stimulated T cells, as measured by upregulation of the activation markers CD69 and CD25, and by internalization of activated T cell receptor subunits. Monomeric MHC-peptide complexes engaged T cell receptors but did not induce activation. For a given amount of receptor engagement, the extent of activation was equivalent for each of the oligomers and correlated with the number of T cell receptor cross-links induced. These results suggest that formation or rearrangement of a T cell receptor dimer is necessary and sufficient for initiation of T cell signaling.[1]

References

  1. The relationship of MHC-peptide binding and T cell activation probed using chemically defined MHC class II oligomers. Cochran, J.R., Cameron, T.O., Stern, L.J. Immunity (2000) [Pubmed]
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