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Related Experiment Video

Updated: Jul 1, 2025

Studying the Effects of Tumor-Secreted Paracrine Ligands on Macrophage Activation using Co-Culture with Permeable Membrane Supports
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Immunometabolic Maladaptations to the Tumor Microenvironment.

Emma S Hathaway1, Erin Q Jennings2, Jeffrey C Rathmell3,4

  • 1Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, USA.

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Summary

Tumor microenvironment (TME) metabolic adaptations impair immune cell functions, hindering antitumor immunity. Addressing these metabolic challenges is crucial for improving cancer immunotherapy and T-cell therapies.

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Area of Science:

  • Oncology
  • Immunology
  • Metabolism

Background:

  • Tumors comprise cancer cells and diverse immune infiltrates.
  • Immune cell metabolism within the tumor microenvironment (TME) is poorly understood.
  • Metabolic adaptations in the TME impede T-cell and macrophage functions.

Purpose of the Study:

  • To review immune cell metabolic adaptations in solid tumors.
  • To explore drivers of metabolic immune suppression.
  • To highlight implications for cancer immunotherapy.

Main Methods:

  • Literature review of T-cell and macrophage metabolism in the TME.
  • Analysis of metabolic adaptations and their impact on immune effector functions.
  • Synthesis of findings related to metabolic immune suppression.

Main Results:

  • Metabolic adaptations to the TME, including nutrient depletion and waste accumulation, suppress immune cells.
  • Specific immune cell subsets exhibit unique metabolic requirements and maladaptive responses.
  • Metabolic signaling via posttranslational modifications contributes to immune suppression.

Conclusions:

  • Understanding immune cell metabolism in the TME is critical for overcoming therapeutic resistance.
  • Targeting metabolic pathways could enhance antitumor immunity.
  • Addressing metabolic immune suppression is key for advancing cancer immunotherapy and CAR T-cell therapies.