Efficient induction of T helper type 1-mediated immune responses in antigen-primed mice by anti-CD3 single-chain Fv/interleukin-18 fusion DNA

E. J. Kim, D. Cho, T. S. Kim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Two types of T helper (Th) cells - Th1 and Th2 - play different roles in protection and immunopathology. The Th1 cell-mediated immune response plays an important role in inducing the host defence against intracellular bacteria and also in cancer immunotherapy. To effectively induce Th1 immune responses, we constructed a mammalian expression plasmid (pAnti-CD3sFv/IL-18) carrying a fusion gene in which anti-CD3 single-chain Fv (sFv) cDNA, the smallest unit of antibody recognizing the CD3 epsilon moiety of the T-cell receptor, was covalently linked to mature interleukin (IL)-18 cDNA. Intramuscular injection of ovalbumin (OVA)-sensitized BALB/c mice with pAnti-CD3sFv/IL-18 DNA efficiently increased the production of both OVA-specific interferon-γ and anti-OVA immunoglobulin G2a, compared to injection with pAnti-CD3sFv DNA. In addition, pAnti-CD3sFv/IL-18 was more efficient than a mixture of pAnti-CD3sFv + pIL-18 in inducing OVA-specific, Th1 immune responses and also in inhibiting OVA-specific, IL-4 production. These studies indicate that vaccination with pAnti-CD3sFv/IL-18 fusion DNA efficiently induces the Th1 immune response in antigen-sensitized mice.

Original languageEnglish
Pages (from-to)27-34
Number of pages8
JournalImmunology
Volume111
Issue number1
DOIs
Publication statusPublished - 2004 Jan

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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