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Systemic application of CpG‐rich DNA suppresses adaptive T cell immunity via induction of IDO

Open access
Wingender, Gerhard, Garbi, Natalio, Schumak, Beatrix, Jüngerkes, Frank, Endl, Elmar, von Bubnoff, Dagmar, Steitz, Julia, Striegler, Jörg, Moldenhauer, Gerd, Tüting, Thomas, Heit, Antje, Huster, Katharina M., Takikawa, Osamu, Akira, Shizuo, Busch, Dirk H., Wagner, Hermann, Hämmerling, Günter J., Knolle, Percy A., Limmer, Andreas·2006·European Journal of Immunology

Abstract

CpG‐rich oligonucleotides (CpG‐ODN) bind to Toll‐like receptor 9 (TLR9) and are used as powerful adjuvants for vaccination. Here we report that CpG‐ODN not only act as immune stimulatory agents but can also induce strong immune suppression depending on the anatomical location of application. In agreement with the adjuvant effect, subcutaneous application of antigen plus CpG‐ODN resulted in antigen‐specific T cell activation in local lymph nodes. In contrast, systemic application of CpG‐ODN resulted in suppression of T cell expansion and CTL activity in the spleen. The suppressive effect was mediated by indoleamine 2,3‐dioxygenase (IDO) as indicated by the observation that CpG‐ODN induced IDO in the spleen and that T cell suppression could be abrogated by 1‐methyl‐tryptophan (1‐MT), an inhibitor of IDO. No expression of IDO was observed in lymph nodes after injection of CpG‐ODN, explaining why suppression was restricted to the spleen. Studies with a set of knockout mice demonstrated that the CpG‐ODN‐induced immune suppression is dependent on TLR9 stimulation and independent of type I and type II interferons. The present study shows that for the use of CpG‐ODN as an adjuvant in vaccines, the route of application is crucial and needs to be considered. In addition, the results indicate that down‐modulation of immune responses by CpG‐ODN may be possible in certain pathological conditions. See accompanying commentary: http://dx.doi.org/10.1002/eji.200535667

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Metadata

Authors
Wingender, G., Garbi, N., Schumak, B., Jüngerkes, F., Endl, E., von Bubnoff, D., Steitz, J., Striegler, J., Moldenhauer, G., Tüting, T., Heit, A., Huster, K. M., Takikawa, O., Akira, S., Busch, D. H., Wagner, H., Hämmerling, G. J., Knolle, P. A., & Limmer, A.
Venue
European Journal of Immunology
Publisher
Wiley
Published
2005-12-27
Volume
36
Issue
1
Pages
12-20
ISSN
  • 0014-2980 (ISSN-L)
  • 1521-4141
OpenAlex
W2085802461
Cited by
170
References
7
FWCI
6.12
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Systemic application of CpG‐rich DNA suppresses adaptive T cell immunity via induction of IDO. https://app.cochat.ai/papers/10.1002/eji.200535602
The paper
Wingender, G., Garbi, N., Schumak, B., Jüngerkes, F., Endl, E., von Bubnoff, D., Steitz, J., Striegler, J., Moldenhauer, G., Tüting, T., Heit, A., Huster, K. M., Takikawa, O., Akira, S., Busch, D. H., Wagner, H., Hämmerling, G. J., Knolle, P. A., & Limmer, A. (2006). Systemic application of CpG‐rich DNA suppresses adaptive T cell immunity via induction of IDO. European Journal of Immunology. https://doi.org/10.1002/eji.200535602

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.