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Updated: Sep 28, 2026

In Vitro Assay to Study Tumor-macrophage Interaction
08:36

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Published on: August 1, 2019

A potential role of macrophage activation in the treatment of cancer

A H Klimp1, E G E de Vries, G L Scherphof

  • 1Department of Physiological Chemistry, Faculty of Medical Sciences, Groningen University Institute for Drug Exploration, University of Groningen, A. Deusinglaan 1, 9713 AV, Groningen, The Netherlands. a.h.klimp@med.rug.nl

Critical Reviews in Oncology/Hematology
|November 5, 2002
PubMed

Insights

Macrophages can kill tumor cells when activated by specific immune stimulants. This review covers studies and clinical trials on activating macrophages for cancer defense, highlighting key substances like TNF and NO.

Area of Science:

  • Immunology
  • Cancer Biology

Background:

  • Macrophages play a crucial role in tumor surveillance and elimination.
  • Tumor cell killing by macrophages is a complex process influenced by various factors.
  • Understanding macrophage activation is key to developing novel cancer therapies.

Purpose of the Study:

  • To review experimental studies and clinical trials on macrophage activation for cancer treatment.
  • To discuss the mechanisms by which activated macrophages exert anti-tumor effects.
  • To explore the potential of macrophage-based immunotherapies.

Main Methods:

  • Review of existing literature on macrophage activation and anti-tumor functions.
  • Analysis of experimental studies involving various immune stimulants (LPS, MDP, IFN-gamma, GM-CSF).
  • Examination of clinical trials targeting macrophage or dendritic cell activation.

Main Results:

  • Activated macrophages secrete cytotoxic factors such as tumor necrosis factor (TNF) and nitric oxide (NO).
  • Macrophage activation can be achieved through stimulation with bacterial products or cytokines.
  • Some secreted substances may paradoxically promote tumor growth, depending on tumor type and stage.

Conclusions:

  • Macrophage activation represents a promising strategy for cancer immunotherapy.
  • Further research is needed to optimize macrophage activation protocols and overcome potential limitations.
  • Clinical trials show potential for enhancing anti-tumor immunity through immune cell modulation.

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