Cited by 16Neuroinflammation and Neurodegeneration MechanismsMetabolism and Genetic DisordersLysosomal Storage Disorders Research

Peroxisomal defects in microglial cells induce a disease-associated microglial signature

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Raas, Quentin, Tawbeh, Ali, Tahri-Joutey, Mounia, Gondcaille, Catherine, Keime, Céline, Kaiser, Romain, Trompier, Doriane, Nasser, Boubker +10 more·2023·Frontiers in Molecular Neuroscience

Abstract

Microglial cells ensure essential roles in brain homeostasis. In pathological condition, microglia adopt a common signature, called disease-associated microglial (DAM) signature, characterized by the loss of homeostatic genes and the induction of disease-associated genes. In X-linked adrenoleukodystrophy (X-ALD), the most common peroxisomal disease, microglial defect has been shown to precede myelin degradation and may actively contribute to the neurodegenerative process. We previously established BV-2 microglial cell models bearing mutations in peroxisomal genes that recapitulate some of the hallmarks of the peroxisomal β-oxidation defects such as very long-chain fatty acid (VLCFA) accumulation. In these cell lines, we used RNA-sequencing and identified large-scale reprogramming for genes involved in lipid metabolism, immune response, cell signaling, lysosome and autophagy, as well as a DAM-like signature. We highlighted cholesterol accumulation in plasma membranes and observed autophagy patterns in the cell mutants. We confirmed the upregulation or downregulation at the protein level for a few selected genes that mostly corroborated our observations and clearly demonstrated increased expression and secretion of DAM proteins in the BV-2 mutant cells. In conclusion, the peroxisomal defects in microglial cells not only impact on VLCFA metabolism but also force microglial cells to adopt a pathological phenotype likely representing a key contributor to the pathogenesis of peroxisomal disorders.

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Crossref · 10.3389/fnmol.2023.1170313

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  • RNA sequencing revealed large-scale reprogramming of genes involved in lipid metabolism, immune response, cell signaling, and autophagy in ABCD1-mutated microglia.

    “RNA sequencing revealed large-scale reprogramming of genes involved in lipid metabolism, immune response, cell signaling, and autophagy [350].”

    From Revisiting the Pathogenesis of X-Linked Adrenoleukodystrophy (2025) · cites this paper as [350]

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Authors
Raas, Q., Tawbeh, A., Tahri-Joutey, M., Gondcaille, C., Keime, C., Kaiser, R., Trompier, D., Nasser, B., Leoni, V., Bellanger, E., Boussand, M., Hamon, Y., Benani, A., Di Cara, F., Truntzer, C., Cherkaoui-Malki, M., Andreoletti, P., & Savary, S.
Affiliations
  • Université de Bourgogne (FR)
  • Centre National de la Recherche Scientifique (FR)
  • Université Hassan 1er (MA)
  • University of Milano-Bicocca (IT)
  • Centre Georges François Leclerc (FR)
Corresponding author
Savary, Stéphane
Venue
Frontiers in Molecular Neuroscience
Published
2023-04-17
Volume
16
Issue
Sec. Brain Disease Mechanisms
Pages
1170313-1170313
ISSN
1662-5099 (ISSN-L)
OpenAlex
W4366216678
Cited by
16
References
151
Citations by year
2026: 8 · 2025: 4 · 2024: 1 · 2023: 3
FWCI
1.65
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Molecular Neuroscience (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, cc-by)
  • BOA (University of Milano-Bicocca) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Greater South Information System
Funders
  • Agence Nationale de la Recherche (ANR-10-INBS-0009, ANR-17-CE15-0032)
  • Université de Namur
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
  • Health Sciences › Medicine › Physiology › Lysosomal Storage Disorders Research
Keywords
microglia, peroxisomal disorders, X-linked adrenoleukodystrophy, very long chain fatty acids, BV-2 cells, microglial reprogramming, cholesterol accumulation, autophagy, lysosomes, lipid metabolism, neurodegeneration, myelin degradation

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