Immortalized dendritic cell line with efficient cross-priming ability established from transgenic mice harboring the temperature-sensitive SV40 large T-antigen gene

Shin Ebihara, Shota Endo, Kozue Ito, Yumi Ito, Kenichi Akiyama, Masuo Obinata, Toshiyuki Takai

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The uptake of an antigen and its presentation to specific T cells by dendritic cells (DCs) is a primary event in initiation of humoral and cellular immune responses as well as the induction of cytotoxic T cells (CTLs). DCs are induced by culturing bone marrow cells in the presence of GM-CSF. However, the resulting DCs are short-lived and the culture usually contains CD11c-negative non-DC cells, which adversely affects reproducibility and makes interpretation of the experimental results difficult. Therefore, it would be useful if DCs could be readily immortalized with their functions being retained. In this study we established a novel, immortalized murine DC line with antigen-presenting capacity in vitro as well as an augmenting effect on humoral and cellular immune responses in vivo, utilizing bone marrow cells from transgenic mice harboring the temperature-sensitive SV40 large T-antigen gene. In the presence of GM-CSF, the resulting DC line, termed SVDC, could be continuously subcultured for more than 12 months. When pulsed with OVA alone or OVA-IgG immune complexes via Fcγ receptors, SVDC augmented OVA-specific T cell proliferation efficiently in vitro, and elicited OVA-specific IgG production in vivo on the adoptive transfer of pulsed SVDC into naive mice. Interestingly, SVDC exhibited significantly high cross-priming ability compared to DCs in a short-term culture, thus leading to their extremely high effectiveness in inducing anti-tumor immunity in vivo. Thus, SVDC is useful for the detailed characterization of antigen presentation, and for research on the various therapeutic benefits of DC vaccination to elicit specific immune responses in immunodeficiencies, infectious diseases and cancer.

Original languageEnglish
Pages (from-to)321-328
Number of pages8
JournalJournal of biochemistry
Volume136
Issue number3
DOIs
Publication statusPublished - 2004 Sep 1

Keywords

  • Antigen presentation
  • Dendritic cells
  • Fc receptor
  • Immortalized cell
  • Vaccination

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology

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