JOURNAL ARTICLE
REVIEW

Toll receptors modulate allergic responses: interaction with dendritic cells, T cells and mast cells

Abdelouahab Bellou, Bianca Schaub, Leon Ting, Patricia W Finn
Current Opinion in Allergy and Clinical Immunology 2003, 3 (6): 487-94
14612674

PURPOSE OF REVIEW: The discovery of Toll-like receptors has generated much interest in understanding the impact of innate immunity on adaptive immune responses, including allergic diseases.

RECENT FINDINGS: Recent studies suggest that Toll-like receptor pathways may mediate interactions between dendritic cells, T lymphocytes and mast cells, thus modulating allergic immune responses. Toll-like receptor signaling triggers dendritic cell maturation, which primes naive T lymphocytes towards specific T helper cell types 1 and 2 immune responses. Although a T helper cell type 1/2 balance may be important in modulating allergic responses, T regulatory cells that suppress certain immune responses may be critical in immune regulation.

SUMMARY: With the identification of different subsets of dendritic cells and the discovery of Toll-like receptors on T regulatory cells and mast cells, the manipulation of Toll-like receptor signaling may lead to novel therapeutic options in allergic diseases.

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