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Nat Immunol. 2001 Dec;2(12):1126-32.

B cells and professional APCs recruit regulatory T cells via CCL4.

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Medical Research Council, Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH, UK.


Using gene expression profiling, we show here that activation of B cells and professional antigen-presenting cells (APCs) induces the expression of common chemokines. Among these, CCL4 was the most potent chemoattractant of a CD4+CD25+ T cell population, which is a characteristic phenotype of regulatory T cells. Depletion of either regulatory T cells or CCL4 resulted in a deregulated humoral response, which culminated in the production of autoantibodies. This suggested that the recruitment of regulatory T cells to B cells and APCs by CCL4 plays a central role in the normal initiation of T cell and humoral responses, and failure to do this leads to autoimmune activation.

[Indexed for MEDLINE]

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