Enhanced anti-cancer activity of human dendritic cells sensitized with gamma-irradiation-induced apoptotic colon cancer cells

Sun Kyung Kim, Cheol Heui Yun, Seung Hyun Han

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Properly sensitized dendritic cells (DCs) can be an effective immunotherapeutic against cancers. We investigated the phenotypic and functional changes in human DCs sensitized with γ-irradiated colon cancer cell-line HT-29 (GIH). GIH induced maturation and activation of DCs. GIH-sensitized DCs showed increased cytotoxic activity against HT-29 through higher expression of perforin and granzyme B. They further induced expression of effector cytokines, cytotoxic molecules, and mucosal-homing receptor in autologous T-cells. Conclusively, these results suggest that effective anti-cancer activity is induced when DCs are sensitized with γ-irradiated cancer cells via both direct augmentation of the cytotoxicity and indirect activation of T cells.

Original languageEnglish
Pages (from-to)278-288
Number of pages11
JournalCancer Letters
Volume335
Issue number2
DOIs
StatePublished - Jul 28 2013

Keywords

  • γ-Irradiation
  • Cancer cell-killing
  • Cytotoxic molecules
  • Dendritic cells
  • HT-29

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