Macrophages in the microenvironment of head and neck cancer: potential targets for cancer therapy

Diane Evrard1, Petr Szturz2, Annemilaï Tijeras-Raballand3

  • 1Head and Neck Surgery Department, Hôpital Bichat, Paris, France.

Oral Oncology
|January 9, 2019
PubMed

Insights

Tumor-associated macrophages (TAMs) are key in head and neck cancers. Targeting TAMs offers new therapeutic strategies for these difficult-to-treat malignancies.

Area of Science:

  • Oncology
  • Immunology
  • Cancer Microenvironment

Background:

  • The tumor microenvironment, particularly immune cells, is a critical target for cancer therapies.
  • Advanced head and neck cancers have poor prognoses, necessitating novel treatment strategies.
  • High density of tumor-associated macrophages (TAMs) correlates with poor outcomes in oral squamous cell carcinoma.

Purpose of the Study:

  • To review the prognostic and therapeutic roles of TAMs in head and neck carcinomas.
  • To explore strategies for modulating TAMs within the tumor microenvironment.

Main Methods:

  • Literature review focusing on TAMs in head and neck cancers.
  • Analysis of prognostic data linking TAM density to patient outcomes.
  • Examination of therapeutic approaches targeting TAMs, including CSF-1/CSF-1R inhibitors and phenotype reprogramming.

Main Results:

  • TAMs are consistently associated with poor prognosis in oral squamous cell carcinoma.
  • Limited data currently exist for TAMs in other head and neck cancer sites.
  • Investigated strategies include TAM inactivation and M2 to M1 phenotype reprogramming.

Conclusions:

  • TAMs represent a significant prognostic factor in head and neck carcinomas.
  • Targeting TAMs, through inhibition or reprogramming, holds therapeutic potential.
  • Further research is needed to fully elucidate TAM roles across all head and neck cancer sites.

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