Macrophage Activation Mechanisms in Human Monocytic Cell Line-derived Macrophages

Anticancer Res. 2015 Aug;35(8):4447-51.

Abstract

Background: Although the mechanisms of macrophage activation are important for cancer immunotherapy, they are poorly understood. Recently, easy and robust assay systems for assessing the macrophage-activating factor (MAF) using monocytic cell line-derived macrophages were established.

Materials and methods: Gene-expression profiles of U937- and THP-1-derived macrophages were compared using gene expression microarray analysis and their responses against several MAFs were examined by in vitro experiments.

Results: Activated states of these macrophages could not be assigned to a specific sub-type but showed, however, different unique characteristics.

Conclusion: The unique of monocytic cell line-derived macrophages could provide clues to understand the activation mechanism of macrophages and, therefore, help to develop effective cancer immunotherapy with MAFs.

Keywords: Immunotherapy; THP-1 cell line; U937 cell line; macrophage-activating factor; phagocytic activity.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biological Assay / methods
  • Cell Line
  • Cytokines / immunology
  • Gene Expression / genetics
  • Gene Expression Profiling
  • Humans
  • Immunotherapy
  • Interferon-gamma / immunology
  • Interleukin-10 / immunology
  • Interleukin-4 / immunology
  • Lipopolysaccharides / immunology
  • Macrophage Activation / genetics
  • Macrophage Activation / immunology*
  • Macrophage-Activating Factors / immunology*
  • Macrophages / cytology
  • Macrophages / immunology*
  • Microarray Analysis
  • Neoplasms / immunology*
  • Neoplasms / therapy*
  • Phagocytosis / immunology*
  • Signal Transduction / immunology
  • U937 Cells

Substances

  • Cytokines
  • IL10 protein, human
  • IL4 protein, human
  • Lipopolysaccharides
  • Macrophage-Activating Factors
  • Interleukin-10
  • Interleukin-4
  • Interferon-gamma