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- W4313373601 abstract "Abstract Alveolar macrophages (AMs) are the most abundant immune cells in the lung during homeostasis. AMs are critical for normal lung development, surfactant metabolism and host defense against various respiratory pathogens. Despite being terminally differentiated cells, AMs are able to proliferate and self-renew to maintain their compartment without the input of the hematopoietic system in the adulthood during homeostasis. However, the molecular and metabolic mechanisms modulating AM proliferative responses are still incompletely understood. Here we have investigated the metabolic regulation of AM proliferation and self-renewal. We found that mitochondrial metabolism is critical for AM proliferation in vitro and in vivo. Interestingly, inhibition of glucose uptake or fatty acid oxidation did not significantly impact AM proliferation. Rather, inhibition of the glutamine metabolic process abolished AM proliferation in vitro and in vivo following their partial depletion during influenza infection. We further demonstrated that glutamine metabolism was required for AM mitochondrial respiration. Our data indicate that glutamine is a critical substrate fueling mitochondrial metabolism required for AM proliferation. Our study is expected to shed light on the metabolic regulation of AM maintenance and repopulation during homeostasis and following acute respiratory viral infection." @default.
- W4313373601 created "2023-01-06" @default.
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- W4313373601 date "2020-05-01" @default.
- W4313373601 modified "2023-09-24" @default.
- W4313373601 title "Glutamine metabolism is required for alveolar macrophage proliferation" @default.
- W4313373601 doi "https://doi.org/10.4049/jimmunol.204.supp.248.18" @default.
- W4313373601 hasPublicationYear "2020" @default.
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