Progress in reeducating tumor-associated macrophages in tumor microenvironment

Area of Science:

• Oncology
• Immunology
• Biomedical Engineering

Background:

• Malignant tumors remain a significant global health threat, with conventional therapies offering suboptimal prognoses.
• Immunotherapy has emerged as a promising cancer treatment, but its full potential is hindered by challenges within the tumor microenvironment (TME).
• Macrophages, particularly tumor-associated macrophages (TAMs), are crucial innate immune cells within the TME, influencing immune responses and tumor progression.

Purpose of the Study:

• To explore strategies for reprogramming the TME to enhance anti-tumor immunity.
• To investigate methods for altering the recruitment and polarization of TAMs.
• To provide a comprehensive overview of current approaches for modulating TAMs for improved cancer therapy.

Main Methods:

• Review and categorization of existing therapeutic approaches targeting TAMs.
• Analysis of methods including nanoparticles and photodynamic therapy for their impact on macrophage polarization.
• Organization of strategies for reprogramming TAMs within the TME.

Main Results:

• Identified various therapeutic modalities capable of influencing macrophage polarization within the TME.
• Highlighted the critical role of TAM reprogramming in overcoming immunotherapy obstacles.
• Provided a structured overview of current TAM-targeting strategies.

Conclusions:

• Reprogramming TAMs is a promising strategy to enhance the efficacy of cancer immunotherapy.
• Understanding and manipulating the TME, particularly TAM behavior, is essential for developing novel tumor therapies.
• This review offers insights into clinical applications of TAM-reprogramming strategies for future cancer treatments.