Suppressive oligodeoxynucleotides inhibit Th1 differentiation by blocking IFN-gamma- and IL-12-mediated signaling.

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2004-10-15

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Shirota, H
Gürsel, Mayda
Klinman, DM

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Repetitive TTAGGG motifs present at high frequency in mammalian telomeres can suppress Th1-mediated immune responses. Synthetic oligonucleotides (ODN) containing TTAGGG motifs mimic this activity and have proven effective in the prevention/ treatment of certain Th1-dependent autoimmune diseases. This work explores the mechanism by which suppressive ODN block the induction of Th1 immunity. Findings indicate that these ODN inhibit IFN- -induced STAT1 phosphorylation and IL-12- induced STAT3 and STAT4 phosphorylation. As a result, T-bet expression is reduced as is the maturation of naive CD4 cells into Th1 effectors. These changes indirectly support the generation of Th2-dominated immune responses. Suppressive ODN may thus represent a novel approach to influence the Th1:Th2 balance in vivo.

Subject Keywords

Immunology

URI

https://hdl.handle.net/11511/35457

Journal

Journal of immunology (Baltimore, Md. : 1950)

DOI

https://doi.org/10.4049/jimmunol.173.8.5002

Collections

Department of Biology, Article

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Citation Formats

H. Shirota, M. Gürsel, and D. Klinman, “Suppressive oligodeoxynucleotides inhibit Th1 differentiation by blocking IFN-gamma- and IL-12-mediated signaling.,” Journal of immunology (Baltimore, Md. : 1950), pp. 5002–7, 2004, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35457.