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Regulatory T cells (Tregs) can potentially migrate to the B cell areas of secondary lymphoid tissues and suppress T cell-dependent B cell Ig response. T cell-dependent Ig response requires B cell stimulation by Th cells. It has been unknown whether Tregs can directly suppress B cells or whether they must suppress Th cells to suppress B cell response. We report here that Foxp3+ Tregs are found in T-B area borders and within germinal centers of human lymphoid tissues and can directly suppress B cell Ig response. Although Tregs can effectively suppress T cells, they can also directly suppress B cell response without the need to first suppress Th cells. The direct suppression of B cell Ig production by Tregs is accompanied by inhibition of Ig class switch recombination.

Original publication

DOI

10.4049/jimmunol.175.7.4180

Type

Journal article

Journal

J Immunol

Publication Date

01/10/2005

Volume

175

Pages

4180 - 4183

Keywords

B-Lymphocytes, Cells, Cultured, Forkhead Transcription Factors, Humans, Immunoglobulin Class Switching, Palatine Tonsil, Receptors, Cell Surface, Receptors, Interleukin-2, T-Lymphocytes, Regulatory