Heterogeneous Myeloid Cells in Tumors

Area of Science:

• Oncology
• Immunology
• Cell Biology

Background:

• Myeloid cells are key components of the tumor microenvironment (TME).
• Tumor-associated myeloid cells (TAMCs) include macrophages, neutrophils, and myeloid-derived suppressor cells (MDSCs).
• These cells exhibit diverse functions, impacting tumor growth, metastasis, and therapeutic responses.

Purpose of the Study:

• To review the diverse subpopulations of TAMCs.
• To elucidate the multifaceted roles of TAMCs in cancer biology.
• To discuss the implications of TAMCs in cancer therapy.

Main Methods:

• Literature review of studies on myeloid cells in cancer.
• Analysis of TAMC functions within the tumor microenvironment.
• Examination of TAMC roles in angiogenesis and immunomodulation.

Main Results:

• TAMCs significantly influence tumor development, including clonal evolution, growth, and metastasis.
• TAMCs reshape the TME and tumor vasculature to promote tumor progression.
• TAMCs modulate immune responses and impact the efficacy of cancer treatments.

Conclusions:

• TAMCs play a complex role in cancer, exerting both pro-tumor and anti-tumor effects.
• Targeting TAMCs is a promising strategy for cancer monotherapy and combination treatments.
• Further research into TAMC subpopulations is crucial for advancing cancer therapy.