alexa CpG DNA, a novel immune enhancer for systemic and mucosal immunization with influenza virus.
Psychiatry

Psychiatry

Clinical Depression

Author(s): Moldoveanu Z, LoveHoman L, Huang WQ, Krieg AM

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Abstract Bacterial DNA causes B cell proliferation, immunoglobulin secretion, and Th1-like cytokine secretion, due to unmethylated CpG dinucleotides in particular base contexts (CpG motifs), which are far more common in bacterial DNA than in vertebrate DNA. Synthetic oligodeoxynucleotides (ODN) containing CpG motifs also trigger immune activation, suggesting possible utility as vaccine enhancers. Mice systemically primed with formalin-inactivated influenza virus mixed with CpG ODN, generated virus-specific serum antibodies at titres approximately seven times higher than mice immunized without CpG; the titres were further increased following an identical second injection. To determine whether CpG could be absorbed through mucosae and enhance vaccination responses, mice were immunized intranasally (IN) with the same preparation of virus with or without CpG ODN or Escherichia coli DNA. Following IN immunization, CpG ODN or E. coli DNA promoted increased production of influenza-specific antibodies in serum, saliva and the genital tract, compared with the control groups. These studies indicate that stimulatory CpG ODN are promising new immune enhancers for vaccination applications.
This article was published in Vaccine and referenced in Clinical Depression

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