Induction of protective immunity to Listeria monocytogenes with dendritic cells retrovirally transduced with a cytotoxic T lymphocyte epitope minigene

Infect Immun. 2003 Apr;71(4):1748-54. doi: 10.1128/IAI.71.4.1748-1754.2003.

Abstract

In the present study, we developed a cytotoxic T lymphocyte (CTL) epitope minigene-transduced dendritic cell (DC)-based vaccine against Listeria monocytogenes. Murine bone marrow-derived DCs were retrovirally transduced with a minigene for listeriolysin O (LLO) 91-99, a dominant CTL epitope of L. monocytogenes, and were injected into BALB/c mice intravenously. We found that the DC vaccine was capable of generating peptide-specific CD8+ T cells exhibiting LLO 91-99-specific cytotoxic activity and gamma interferon production, leading to induction of protective immunity to the bacterium. Furthermore, we demonstrated that the retrovirally transduced DC vaccine was more effective than a CTL epitope peptide-pulsed DC vaccine and a minigene DNA vaccine for eliciting antilisterial immunity. These results provide an alternative strategy in which retrovirally transduced DCs are used to design vaccines against intracellular pathogens.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Bacterial Toxins*
  • Bacterial Vaccines / immunology*
  • CD8-Positive T-Lymphocytes / immunology
  • Dendritic Cells / immunology*
  • Epitopes, T-Lymphocyte
  • Heat-Shock Proteins / genetics
  • Heat-Shock Proteins / immunology*
  • Hemolysin Proteins
  • Immunization
  • Interferon-gamma / biosynthesis
  • Listeria monocytogenes / genetics
  • Listeria monocytogenes / immunology*
  • Listeriosis / immunology
  • Listeriosis / prevention & control*
  • Mice
  • Mice, Inbred BALB C
  • Retroviridae / genetics*
  • T-Lymphocytes, Cytotoxic / immunology
  • Transduction, Genetic
  • Vaccines, DNA / immunology

Substances

  • Bacterial Toxins
  • Bacterial Vaccines
  • Epitopes, T-Lymphocyte
  • Heat-Shock Proteins
  • Hemolysin Proteins
  • Vaccines, DNA
  • Interferon-gamma
  • hlyA protein, Listeria monocytogenes