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Pharm Res. 2005 Oct;22(10):1627-33. Epub 2005 Sep 26.

Changes in immune responses to antigen applied to tape-stripped skin with CpG-oligodeoxynucleotide in NC/Nga mice.

Author information

1
School of Pharmacy, Tokyo University of Pharmacy and Life Science, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan, aramaki@ps.toyaku.ac.jp.

Abstract

PURPOSE:

CpG-oligodeoxynucleotide (CpG-ODN) plays a critical role in immunity via the augmentation of Th1 and the suppression of Th2 responses. We examined here the effect of CpG-ODN on the immune response to an antigen applied to a tape-stripped skin of NC/Nga mouse, a human atopic dermatitis (AD) model, by evaluating the production of cytokines and immunoglobulin isotypes.

METHODS:

Model antigen, ovalbumin (OVA), and CpG-ODN were applied on to the shaved skin. The penetration of OVA and CpG-ODN was evaluated using confocal laser scanning microscopy (CLSM). Secretion of cytokine from splenocytes and changes in immunoglobulin isotype levels were determined by enzyme-linked immunosorbent assay (ELISA).

RESULTS:

Through CLSM it was revealed that the model antigen, OVA, and CpG-ODN easily penetrated the tape-stripped skin. Coadministration of CpG-ODN and OVA to the skin elicited an antigen-specific, Th1-predominant immune response and enhanced the production of IFN-gamma. On the other hand, the production of a Th2-type cytokine, IL-4, was drastically suppressed. In terms of antigen-specific antibody production, the level of IgG2a regulated by IFN-gamma was increased by CpG-ODN, but IgE production regulated by IL-4 was suppressed.

CONCLUSIONS:

Administration of CpG-ODN with antigen through the skin may shift the immune response from a Th2- to Th1-like response. These results suggested that administration of CpG-ODN via skin is a simple strategy for patients with diseases such as AD, which is characterized by Th2-dominated inflammation.

PMID:
16180119
DOI:
10.1007/s11095-005-6834-7
[Indexed for MEDLINE]

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