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

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The Retinoic Acid Receptor-alpha mediates human T-cell activation and Th2 cytokine and chemokine production.

BACKGROUND: We have recently demonstrated that all-trans-retinoic acid (ATRA) and 9-cis-retinoic acid (9-cis RA) promote IL-4, IL-5 and IL-13 synthesis, while decreasing IFN-gamma and TNF-alpha expression by activated human T cells and reduces the synthesis of IL-12p70 from accessory cells. Here, we have demonstrated that the observed effects using ATRA and 9-cis RA are shared with the clinically useful RAR ligand, 13-cis retinoic acid (13-cis RA), and the retinoic acid receptor-alpha (RAR-alpha)-selective agonist, AM580 but not with the RAR-beta/gamma ligand, 4-hydroxyphenylretinamide (4-HPR). RESULTS: The increase in type 2 cytokine production by these retinoids correlated with the expression of the T cell activation markers, CD69 and CD38. The RAR-alpha-selective agonist, AM580 recapitulated all of the T cell activation and type 2 cytokine-inducing effects of ATRA and 9-cis-RA, while the RAR-alpha-selective antagonist, RO 41-5253, inhibited these effects. CONCLUSION: These results strongly support a role for RAR-alpha engagement in the regulation of genes and proteins involved with human T cell activation and type 2 cytokine production.[1]

References

  1. The Retinoic Acid Receptor-alpha mediates human T-cell activation and Th2 cytokine and chemokine production. Dawson, H.D., Collins, G., Pyle, R., Key, M., Taub, D.D. BMC Immunol. (2008) [Pubmed]
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