Divergent Therapeutic and Immunologic Effects of Oligodeoxynucleotides with Distinct CpG Motifs

CpG and Non-CpG Oligodeoxynucleotides

Immunomodulatory effects of CpG oligodeoxynucleotides on established th2 responses.

CpG oligodeoxynucleotides (CpG ODNs) are known to induce type 1 T-helper-cell (Th1) responses. We have previously demonstrated that CpG ODNs administered during sensitization prevent Th2-mediated eosinophilic airway inflammation in vivo. We also reported that key Th1 cytokines, gamma interferon (IFN-gamma) and interleukin 12 (IL-12), are not necessary for this protection. Recent in vivo data su...

Immunostimulatory oligodeoxynucleotides containing CpG motifs enhance the efficacy of monoclonal antibody therapy of lymphoma.

Bacterial DNA and synthetic oligodeoxynucleotides containing the CpG motif (CpG ODN) can activate various immune cell subsets, including natural killer cells and macrophages. We evaluated whether the combination of CpG ODN and antitumor monoclonal antibody is effective at preventing tumor growth in an immunocompetent murine lymphoma model. CpG ODN-activated murine splenocytes induced lysis of t...

Enhance the Efficacy of Monoclonal Antibody Therapy of Lymphoma Immunostimulatory Oligodeoxynucleotides Containing CpG Motifs

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Cyclosporin A enhances IL-12 production by CpG motifs in bacterial DNA and synthetic oligodeoxynucleotides.

Certain sequences of nucleotides (CpG motifs) in bacterial DNA or synthetic oligonucleotides (CpG DNA) promote the production of proinflammatory cytokines, including TNF-alpha, IFN-gamma, IL-6, and IL-12. Here we demonstrate that the immunosuppressant cyclosporin A (CsA) unexpectedly enhanced CpG DNA-induced IL-12 production in murine splenocytes. CsA did not inhibit CpG DNA-induced TNF-alpha o...