Metabolism Research in Tumor-Associated Macrophages

A special issue of Biomedicines (ISSN 2227-9059). This special issue belongs to the section "Immunology and Immunotherapy".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 2966

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Guest Editor
Department of Biotechnology Chemistry & Pharmacy, University of Siena, Siena, Italy
Interests: macrophages; tumor microenvironment; MAPK; scaffold molecules; drug resistance; inflammation
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Special Issue Information

Dear Colleagues,

Tumor-associated macrophages (TAMs) are the major immune components of the tumor microenvironment (TME). A large body of scientific evidence indicates that TAMs play a crucial role in tumor development and progression. Clinical and animal model experiments have demonstrated that TAMs are associated with poor prognosis, drug resistance, enhanced angiogenesis, and metastasis in cancer. TAMs are a phenotypically diverse population of myeloid cells which display high plasticity and dynamic metabolic nature. Macrophages exhibit polarization into distinct phenotypic and functional subsets known as M1 and M2 macrophages in response to various activation stimuli. The dichotomy in M1 and M2 macrophages is also evident at the metabolic level. As metabolic reprogramming is recognized as a hallmark of cancers, a complete interpretation of pro-tumoral and anti-tumoral metabolic switch in TAMs is essential to understand the molecular mechanisms in cancer. It is becoming clear that the “immunosuppressive and protumoral” behavior of TAMs results from a rewired metabolic program which affects disease progression and outcome in cancer. However, the complexity and acquisition of a rewired metabolic program in tumor-associated macrophages is still only partially known. Understanding the contribution of multiple metabolic processes in TAMs regulated by the micro-environment could lead to the development of targeted agents and multi-targeting strategies to suppress cancer.

This Special Issue will highlight the current state of the art in tumor-associated macrophages metabolism, metabolic inhibitors, and future directions for pro-tumor macrophage reprogramming strategies.

Dr. Emanuele Giurisato
Guest Editor

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Keywords

  • Tumor-associated macrophages
  • metabolic reprogramming
  • macrophages targeted therapy
  • tumor microenvironment
  • M1-like and M2-like macrophages metabolism
  • immunoregulation
  • nitric oxide synthase
  • glucose metabolism
  • hypoxia

Published Papers (1 paper)

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Review

20 pages, 3800 KiB  
Review
Self-Renewal of Macrophages: Tumor-Released Factors and Signaling Pathways
by Serena Filiberti, Mariapia Russo, Silvia Lonardi, Mattia Bugatti, William Vermi, Cathy Tournier and Emanuele Giurisato
Biomedicines 2022, 10(11), 2709; https://doi.org/10.3390/biomedicines10112709 - 26 Oct 2022
Cited by 7 | Viewed by 2263
Abstract
Macrophages are the most abundant immune cells of the tumor microenvironment (TME) and have multiple important functions in cancer. During tumor growth, both tissue-resident macrophages and newly recruited monocyte-derived macrophages can give rise to tumor-associated macrophages (TAMs), which have been associated with poor [...] Read more.
Macrophages are the most abundant immune cells of the tumor microenvironment (TME) and have multiple important functions in cancer. During tumor growth, both tissue-resident macrophages and newly recruited monocyte-derived macrophages can give rise to tumor-associated macrophages (TAMs), which have been associated with poor prognosis in most cancers. Compelling evidence indicate that the high degree of plasticity of macrophages and their ability to self-renew majorly impact tumor progression and resistance to therapy. In addition, the microenvironmental factors largely affect the metabolism of macrophages and may have a major influence on TAMs proliferation and subsets functions. Thus, understanding the signaling pathways regulating TAMs self-renewal capacity may help to identify promising targets for the development of novel anticancer agents. In this review, we focus on the environmental factors that promote the capacity of macrophages to self-renew and the molecular mechanisms that govern TAMs proliferation. We also highlight the impact of tumor-derived factors on macrophages metabolism and how distinct metabolic pathways affect macrophage self-renewal. Full article
(This article belongs to the Special Issue Metabolism Research in Tumor-Associated Macrophages)
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