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Lipid homeostasis and inflammatory activation are disturbed in classically activated macrophages with peroxisomal β-oxidation deficiency

(2018) IMMUNOLOGY. 153(3). p.342-356
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Abstract
Macrophage activation is characterized by pronounced metabolic adaptation. Classically activated macrophages show decreased rates of mitochondrial fatty acid oxidation and oxidative phosphorylation and acquire a glycolytic state together with their pro-inflammatory phenotype. In contrast, alternatively activated macrophages require oxidative phosphorylation and mitochondrial fatty acid oxidation for their anti-inflammatoryfunction. Although it is evident that mitochondrial metabolism is regulated during macrophage polarization and essential for macrophagefunction, little is known on the regulation and role of peroxisomal -oxidation during macrophage activation. In this study, we show that peroxisomal -oxidation is strongly decreased in classically activated bone-marrow-derived macrophages (BMDM) and mildly induced in alternatively activated BMDM. To examine the role of peroxisomal -oxidation in macrophages, we used Mfp2(-/-) BMDM lacking the key enzyme of this pathway. Impairment of peroxisomal -oxidation in Mfp2(-/-) BMDM did not cause lipid accumulation but rather an altered distribution of lipid species with very-long-chain fatty acids accumulating in the triglyceride and phospholipid fraction. These lipid alterations in Mfp2(-/-) macrophages led to decreased inflammatory activation of Mfp2(-/-) BMDM and peritoneal macrophages evidenced by impaired production of several inflammatory cytokines and chemokines, but did not affect anti-inflammatory polarization. The disturbed inflammatory responses of Mfp2(-/-) macrophages did not affect immune cell infiltration, as mice with selective elimination of MFP2 from myeloid cells showed normal monocyte and neutrophil influx upon challenge with zymosan. Together, these data demonstrate that peroxisomal -oxidation is involved in fine-tuning the phenotype of macrophages, probably by influencing the dynamic lipid profile during macrophage polarization.
Keywords
macrophages, metabolism, multifunctional protein 2, peroxisomal -oxidation, X-LINKED ADRENOLEUKODYSTROPHY, CHAIN FATTY-ACID, HUMAN SKIN FIBROBLASTS, CELL GENE-THERAPY, MULTIFUNCTIONAL PROTEIN-2, ALTERNATIVE ACTIVATION, METABOLISM, DISORDERS, SIGNAL, ACCUMULATION

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Citation

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MLA
Geric, Ivana et al. “Lipid Homeostasis and Inflammatory Activation Are Disturbed in Classically Activated Macrophages with Peroxisomal Β-oxidation Deficiency.” IMMUNOLOGY 153.3 (2018): 342–356. Print.
APA
Geric, I., Tyurina, Y. Y., Krysko, O., Krysko, D., De Schryver, E., Kagan, V. E., Van Veldhoven, P. P., et al. (2018). Lipid homeostasis and inflammatory activation are disturbed in classically activated macrophages with peroxisomal β-oxidation deficiency. IMMUNOLOGY, 153(3), 342–356.
Chicago author-date
Geric, Ivana, Yulia Y Tyurina, Olga Krysko, Dmitri Krysko, Evelyn De Schryver, Valerian E Kagan, Paul P Van Veldhoven, Myriam Baes, and Simon Verheijden. 2018. “Lipid Homeostasis and Inflammatory Activation Are Disturbed in Classically Activated Macrophages with Peroxisomal Β-oxidation Deficiency.” Immunology 153 (3): 342–356.
Chicago author-date (all authors)
Geric, Ivana, Yulia Y Tyurina, Olga Krysko, Dmitri Krysko, Evelyn De Schryver, Valerian E Kagan, Paul P Van Veldhoven, Myriam Baes, and Simon Verheijden. 2018. “Lipid Homeostasis and Inflammatory Activation Are Disturbed in Classically Activated Macrophages with Peroxisomal Β-oxidation Deficiency.” Immunology 153 (3): 342–356.
Vancouver
1.
Geric I, Tyurina YY, Krysko O, Krysko D, De Schryver E, Kagan VE, et al. Lipid homeostasis and inflammatory activation are disturbed in classically activated macrophages with peroxisomal β-oxidation deficiency. IMMUNOLOGY. 2018;153(3):342–56.
IEEE
[1]
I. Geric et al., “Lipid homeostasis and inflammatory activation are disturbed in classically activated macrophages with peroxisomal β-oxidation deficiency,” IMMUNOLOGY, vol. 153, no. 3, pp. 342–356, 2018.
@article{8532399,
  abstract     = {Macrophage activation is characterized by pronounced metabolic adaptation. Classically activated macrophages show decreased rates of mitochondrial fatty acid oxidation and oxidative phosphorylation and acquire a glycolytic state together with their pro-inflammatory phenotype. In contrast, alternatively activated macrophages require oxidative phosphorylation and mitochondrial fatty acid oxidation for their anti-inflammatoryfunction. Although it is evident that mitochondrial metabolism is regulated during macrophage polarization and essential for macrophagefunction, little is known on the regulation and role of peroxisomal -oxidation during macrophage activation. In this study, we show that peroxisomal -oxidation is strongly decreased in classically activated bone-marrow-derived macrophages (BMDM) and mildly induced in alternatively activated BMDM. To examine the role of peroxisomal -oxidation in macrophages, we used Mfp2(-/-) BMDM lacking the key enzyme of this pathway. Impairment of peroxisomal -oxidation in Mfp2(-/-) BMDM did not cause lipid accumulation but rather an altered distribution of lipid species with very-long-chain fatty acids accumulating in the triglyceride and phospholipid fraction. These lipid alterations in Mfp2(-/-) macrophages led to decreased inflammatory activation of Mfp2(-/-) BMDM and peritoneal macrophages evidenced by impaired production of several inflammatory cytokines and chemokines, but did not affect anti-inflammatory polarization. The disturbed inflammatory responses of Mfp2(-/-) macrophages did not affect immune cell infiltration, as mice with selective elimination of MFP2 from myeloid cells showed normal monocyte and neutrophil influx upon challenge with zymosan. Together, these data demonstrate that peroxisomal -oxidation is involved in fine-tuning the phenotype of macrophages, probably by influencing the dynamic lipid profile during macrophage polarization.},
  author       = {Geric, Ivana and Tyurina, Yulia Y and Krysko, Olga and Krysko, Dmitri and De Schryver, Evelyn and Kagan, Valerian E and Van Veldhoven, Paul P and Baes, Myriam and Verheijden, Simon},
  issn         = {0019-2805},
  journal      = {IMMUNOLOGY},
  keywords     = {macrophages,metabolism,multifunctional protein 2,peroxisomal -oxidation,X-LINKED ADRENOLEUKODYSTROPHY,CHAIN FATTY-ACID,HUMAN SKIN FIBROBLASTS,CELL GENE-THERAPY,MULTIFUNCTIONAL PROTEIN-2,ALTERNATIVE ACTIVATION,METABOLISM,DISORDERS,SIGNAL,ACCUMULATION},
  language     = {eng},
  number       = {3},
  pages        = {342--356},
  title        = {Lipid homeostasis and inflammatory activation are disturbed in classically activated macrophages with peroxisomal β-oxidation deficiency},
  url          = {http://dx.doi.org/10.1111/imm.12844},
  volume       = {153},
  year         = {2018},
}

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