Macrophages are metabolically heterogeneous within the tumor microenvironment
Copyright © 2021 The Authors. Published by Elsevier Inc. All rights reserved..
Macrophages are often prominently present in the tumor microenvironment, where distinct macrophage populations can differentially affect tumor progression. Although metabolism influences macrophage function, studies on the metabolic characteristics of ex vivo tumor-associated macrophage (TAM) subsets are rather limited. Using transcriptomic and metabolic analyses, we now reveal that pro-inflammatory major histocompatibility complex (MHC)-IIhi TAMs display a hampered tricarboxylic acid (TCA) cycle, while reparative MHC-IIlo TAMs show higher oxidative and glycolytic metabolism. Although both TAM subsets rapidly exchange lactate in high-lactate conditions, only MHC-IIlo TAMs use lactate as an additional carbon source. Accordingly, lactate supports the oxidative metabolism in MHC-IIlo TAMs, while it decreases the metabolic activity of MHC-IIhi TAMs. Lactate subtly affects the transcriptome of MHC-IIlo TAMs, increases L-arginine metabolism, and enhances the T cell suppressive capacity of these TAMs. Overall, our data uncover the metabolic intricacies of distinct TAM subsets and identify lactate as a carbon source and metabolic and functional regulator of TAMs.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:37 |
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| Enthalten in: |
Cell reports - 37(2021), 13 vom: 28. Dez., Seite 110171 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Geeraerts, Xenia [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 15.02.2022 Date Revised 15.02.2022 published: Print Citation Status MEDLINE |
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| doi: |
10.1016/j.celrep.2021.110171 |
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| Förderinstitution / Projekttitel: |
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| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2021 The Authors. Published by Elsevier Inc. All rights reserved. | ||
| 520 | |a Macrophages are often prominently present in the tumor microenvironment, where distinct macrophage populations can differentially affect tumor progression. Although metabolism influences macrophage function, studies on the metabolic characteristics of ex vivo tumor-associated macrophage (TAM) subsets are rather limited. Using transcriptomic and metabolic analyses, we now reveal that pro-inflammatory major histocompatibility complex (MHC)-IIhi TAMs display a hampered tricarboxylic acid (TCA) cycle, while reparative MHC-IIlo TAMs show higher oxidative and glycolytic metabolism. Although both TAM subsets rapidly exchange lactate in high-lactate conditions, only MHC-IIlo TAMs use lactate as an additional carbon source. Accordingly, lactate supports the oxidative metabolism in MHC-IIlo TAMs, while it decreases the metabolic activity of MHC-IIhi TAMs. Lactate subtly affects the transcriptome of MHC-IIlo TAMs, increases L-arginine metabolism, and enhances the T cell suppressive capacity of these TAMs. Overall, our data uncover the metabolic intricacies of distinct TAM subsets and identify lactate as a carbon source and metabolic and functional regulator of TAMs | ||
| 650 | 4 | |a Journal Article | |
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| 650 | 4 | |a TCA cycle break | |
| 650 | 4 | |a immunometabolism | |
| 650 | 4 | |a immunosuppression | |
| 650 | 4 | |a lactate | |
| 650 | 4 | |a macrophage metabolism | |
| 650 | 4 | |a metabolomics | |
| 650 | 4 | |a non-small-cell lung carcinoma | |
| 650 | 4 | |a single-cell metabolic profiling | |
| 650 | 4 | |a tumor microenvironment | |
| 650 | 4 | |a tumor-associated macrophages | |
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| 700 | 1 | |a Fernández-Garcia, Juan |e verfasserin |4 aut | |
| 700 | 1 | |a Hartmann, Felix J |e verfasserin |4 aut | |
| 700 | 1 | |a de Goede, Kyra E |e verfasserin |4 aut | |
| 700 | 1 | |a Martens, Liesbet |e verfasserin |4 aut | |
| 700 | 1 | |a Elkrim, Yvon |e verfasserin |4 aut | |
| 700 | 1 | |a Debraekeleer, Ayla |e verfasserin |4 aut | |
| 700 | 1 | |a Stijlemans, Benoit |e verfasserin |4 aut | |
| 700 | 1 | |a Vandekeere, Anke |e verfasserin |4 aut | |
| 700 | 1 | |a Rinaldi, Gianmarco |e verfasserin |4 aut | |
| 700 | 1 | |a De Rycke, Riet |e verfasserin |4 aut | |
| 700 | 1 | |a Planque, Mélanie |e verfasserin |4 aut | |
| 700 | 1 | |a Broekaert, Dorien |e verfasserin |4 aut | |
| 700 | 1 | |a Meinster, Elisa |e verfasserin |4 aut | |
| 700 | 1 | |a Clappaert, Emile |e verfasserin |4 aut | |
| 700 | 1 | |a Bardet, Pauline |e verfasserin |4 aut | |
| 700 | 1 | |a Murgaski, Aleksandar |e verfasserin |4 aut | |
| 700 | 1 | |a Gysemans, Conny |e verfasserin |4 aut | |
| 700 | 1 | |a Nana, Frank Aboubakar |e verfasserin |4 aut | |
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| 700 | 1 | |a Laoui, Damya |e verfasserin |4 aut | |
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| 700 | 1 | |a Van Ginderachter, Jo A |e verfasserin |4 aut | |
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