Efficient induction of antigen-specific, T helper type 1-mediated immune responses by intramuscular injection with ovalbumin/interleukin-18 fusion DNA

Seung H. Kim, Dae Ho Cho, Seung Y. Hwang, Tae Sung Kim

Research output: Contribution to journalArticle

12 Citations (Scopus)


The balance of two types of T helper (Th) cells, Th1 and Th2 subsets, is important with respect to susceptibility or resistance to particular infections, or to autoimmune diseases and allergic diseases. To effectively induce Th1 immune responses in an antigen-specific manner, we constructed a mammalian expression plasmid (pOVA/IL-18) carrying a fusion gene in which the ovalbumin (OVA; a model antigen) cDNA was covalently linked to mature interleukin-18 (IL-18) cDNA. Intramuscular injection of C57BL/6 mice with the pOVA/IL-18 DNA efficiently increased the production of both OVA-specific IFN-γ and anti-OVA IgG2a isotype, compared with the injection with the pOVA DNA. In addition, the pOVA/IL-18 was more efficient than a simple mixture of pOVA and pIL-18 in inducing antigen-specific, Th1 immune responses and in inhibiting OVA-specific, IL-4 production. These studies indicate that vaccination with the OVA/IL-18 fusion DNA efficiently induces Th1 immune response in an antigen-specific manner.

Original languageEnglish
Pages (from-to)4107-4114
Number of pages8
Issue number30
Publication statusPublished - 2001 Jul 20
Externally publishedYes



  • DNA vaccine
  • Interleukin-18
  • Ovalbumin
  • T helper response

ASJC Scopus subject areas

  • Immunology
  • Microbiology
  • Virology
  • Infectious Diseases
  • Public Health, Environmental and Occupational Health
  • veterinary(all)

Cite this