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- W4386171364 abstract "Little is known about the effects of high-fat diet (HFD)-induced obesity on resident colonic lamina propria (LP) macrophages (LPMs) function and metabolism. Here, we report that obesity and diabetes resulted in increased macrophage infiltration in the colon. These macrophages exhibited the residency phenotype CX3CR1hiMHCIIhi and were CD4-TIM4-. During HFD, resident colonic LPM exhibited a lipid metabolism gene expression signature that overlapped that used to define lipid-associated macrophages (LAMs). Via single-cell RNA sequencing, we identified a sub-cluster of macrophages, increased in HFD, that were responsible for the LAM signature. Compared to other macrophages in the colon, these cells were characterized by elevated glycolysis, phagocytosis, and efferocytosis signatures. CX3CR1hiMHCIIhi colonic resident LPMs had fewer lipid droplets (LDs) and decreased triacylglycerol (TG) content compared to equivalent cells in lean mice and exhibited increased phagocytic capacity, suggesting that HFD induces adaptive responses in LPMs to limit bacterial translocation." @default.
- W4386171364 created "2023-08-26" @default.
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- W4386171364 date "2023-10-01" @default.
- W4386171364 modified "2023-10-18" @default.
- W4386171364 title "Metabolic and Functional Remodeling of Colonic Macrophages in Response to High Fat Diet-Induced Obesity" @default.
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- W4386171364 doi "https://doi.org/10.1016/j.isci.2023.107719" @default.
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