Interferon-α-inducible Dendritic Cells Matured with OK-432 Exhibit TRAIL and Fas Ligand Pathway-mediated Killer Activity

Sci Rep. 2017 Feb 13:7:42145. doi: 10.1038/srep42145.

Abstract

Active human dendritic cells (DCs), which efficiently induce immune responses through their functions as antigen-presenting cells, exhibit direct anti-tumour killing activity in response to some pathogens and cytokines. These antigen-presenting and tumour killing abilities may provide a breakthrough in cancer immunotherapy. However, the mechanisms underlying this killer DC activity have not been fully proven, despite the establishment of interferon-α (IFN-α)-generated killer DCs (IFN-DCs). Here mature IFN-DCs (mIFN-DCs), generated from IFN-DCs primed with OK-432 (streptococcal preparation), exhibited elevated expression of CD86 and human leukocyte antigen-DR (minimum criteria for DC vaccine clinical trials) as well as antigen-presenting abilities comparable with those of mature IL-4-DCs (mIL-4-DCs). Interestingly, the killing activity of mIFN-DCs, which correlated with the expression of CD56 (natural killer cell marker) and was activated via the tumour necrosis factor-related apoptosis-inducing ligand (TRAIL) and Fas ligand pathway, was stronger than that of IFN-DCs and remarkably stronger than that of mIL-4-DCs. Therefore, mIFN-DCs exhibit great potential as an anti-cancer vaccine that would promote both acquired immunity and direct tumour killing.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antigen Presentation
  • B7-2 Antigen / genetics
  • B7-2 Antigen / immunology
  • CD56 Antigen / genetics
  • CD56 Antigen / immunology
  • Cancer Vaccines / biosynthesis
  • Cell Differentiation / drug effects
  • Cytotoxicity, Immunologic*
  • Dendritic Cells / cytology
  • Dendritic Cells / drug effects*
  • Dendritic Cells / immunology
  • Dinoprostone / pharmacology
  • Fas Ligand Protein / genetics*
  • Fas Ligand Protein / immunology
  • Gene Expression Regulation
  • Granulocyte-Macrophage Colony-Stimulating Factor / pharmacology
  • HLA-DR Antigens / genetics
  • HLA-DR Antigens / immunology
  • Humans
  • Immunophenotyping
  • Interferon-alpha / pharmacology*
  • Interleukin-4 / pharmacology*
  • Monocytes / cytology
  • Monocytes / drug effects
  • Monocytes / immunology
  • Picibanil / pharmacology*
  • Primary Cell Culture
  • Signal Transduction
  • TNF-Related Apoptosis-Inducing Ligand / genetics*
  • TNF-Related Apoptosis-Inducing Ligand / immunology

Substances

  • B7-2 Antigen
  • CD56 Antigen
  • CD86 protein, human
  • Cancer Vaccines
  • FASLG protein, human
  • Fas Ligand Protein
  • HLA-DR Antigens
  • IL4 protein, human
  • Interferon-alpha
  • NCAM1 protein, human
  • TNF-Related Apoptosis-Inducing Ligand
  • TNFSF10 protein, human
  • Interleukin-4
  • Picibanil
  • Granulocyte-Macrophage Colony-Stimulating Factor
  • Dinoprostone