Macrophages as a Potential Immunotherapeutic Target in Solid Cancers.

Area of Science:

• Immunology
• Oncology
• Cancer Research

Background:

• Cancer immunotherapy has advanced significantly, shifting from adaptive to innate immune system modulation for solid tumors.
• Macrophages, crucial innate immune cells, can exhibit both anti-tumor and pro-tumorigenic functions within the tumor microenvironment.

Purpose of the Study:

• To provide a comprehensive overview of the pathobiology of tumor-associated macrophages (TAMs) in solid malignancies.
• To discuss the mechanisms by which TAMs promote tumor progression and explore therapeutic strategies targeting TAMs.

Main Methods:

• Review of existing literature on TAMs' role in solid tumor progression.
• Analysis of mechanisms including inflammation, angiogenesis, metastasis, and immunosuppression.
• Discussion of preclinical and clinical strategies for targeting TAMs.

Main Results:

• TAMs predominantly adopt pro-tumorigenic roles in the tumor microenvironment.
• TAMs contribute to tumor progression through various mechanisms like promoting inflammation, angiogenesis, and immune suppression.
• Targeting TAMs shows promise in preclinical studies, with some strategies advancing to clinical trials.

Conclusions:

• Understanding TAM pathobiology is crucial for developing effective cancer therapies.
• Targeting TAMs represents a viable strategy for next-generation immunotherapy against solid tumors.
• Harnessing the anti-tumorigenic properties of macrophages can be a powerful therapeutic approach.