Cited by 619Immune cells in cancerAngiogenesis and VEGF in CancerCancer, Stress, Anesthesia, and Immune Response

Tumor-Associated Macrophages: Recent Insights and Therapies

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Zhou, Jiawei, Tang, Ziwei, Gao, Siyang, Li, Chunyu, Feng, Yiting, Zhou, Xikun·2020·Frontiers in Oncology

Abstract

Macrophages, which have functions of engulfing and digesting foreign substances, can clear away harmful matter, including cellular debris and tumor cells. Based on the condition of the internal environment, circulating monocytes give rise to mature macrophages, and when they are recruited into the tumor microenvironment and in suitable conditions, they are converted into tumor-associated macrophages (TAMs). Generally, macrophages grow into two main groups called classically activated macrophages (M1) and alternatively activated macrophages (M2). M2 and a small fraction of M1 cells, also known as TAMs, not only lack the function of phagocytizing tumor cells but also help these tumor cells escape from being killed and help them spread to other tissues and organs. In this review, we introduce several mechanisms by which macrophages play a role in the immune regulation of tumor cells, including both killing factors and promoting effects. Furthermore, the targeted therapy for treating tumors based on macrophages is also referred to in our review. We confirm that further studies of macrophage-focused therapeutic strategies and their use in clinical practice are needed to verify their superior efficacy and potential in cancer treatment.

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Crossref · 10.3389/fonc.2020.00188

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  • Tumor-associated macrophages (TAMs) are an important component of the tumor microenvironment, comprising up to 50% of the cells in solid tumors.

    “Tumor-associated macrophages (TAMs) are an important component of the tumor microenvironment, comprising up to 50% of the cells in solid tumors (Zhou et al., 2020).”

    From Sysrev: A FAIR Platform for Data Curation and Systematic Evidence Review (2021) · cites this paper as Zhou et al., 2020

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Authors
Zhou, J., Tang, Z., Gao, S., Li, C., Feng, Y., & Zhou, X.
Affiliations
  • Chinese Academy of Medical Sciences & Peking Union Medical College (CN)
  • Sichuan University (CN)
Corresponding author
Zhou, Xikun
Venue
Frontiers in Oncology
Published
2020-02-25
Volume
10
Pages
188-188
ISSN
2234-943X (ISSN-L)
OpenAlex
W3008550537
Cited by
619
References
89
Citations by year
2026: 23 · 2025: 73 · 2024: 94 · 2023: 138 · 2022: 142 · 2021: 112 · 2020: 35
FWCI
10.47
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Oncology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Sichuan University (2018ZX09201018)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
  • Health Sciences › Medicine › Psychiatry and Mental health › Cancer, Stress, Anesthesia, and Immune Response
Keywords
tumor-associated macrophages, tumor microenvironment, M1 macrophages, M2 macrophages, monocyte differentiation, tumor immune evasion, metastasis, cancer immunotherapy

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