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Mitochondrial network adaptations of microglia reveal sex-specific stress response after injury and UCP2 knockout. | LitMetric

AI Article Synopsis

Article Abstract

Mitochondrial networks remodel their connectivity, content, and subcellular localization to support optimized energy production in conditions of increased environmental or cellular stress. Microglia rely on mitochondria to respond to these stressors, however our knowledge about mitochondrial networks and their adaptations in microglia is limited. Here, we generate a mouse model that selectively labels mitochondria in microglia. We identify that mitochondrial networks are more fragmented with increased content and perinuclear localization vs. . Mitochondrial networks adapt similarly in microglia closest to the injury site after optic nerve crush. Preventing microglial UCP2 increase after injury by selective knockout induces cellular stress. This results in mitochondrial hyperfusion in male microglia, a phenotype absent in females due to circulating estrogens. Our results establish the foundation for mitochondrial network analysis of microglia , emphasizing the importance of mitochondrial-based sex effects of microglia in other pathologies.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10507162PMC
http://dx.doi.org/10.1016/j.isci.2023.107780DOI Listing

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