February 9, 2024The Journal of Cell BiologyOpen Access

APOE traffics to astrocyte lipid droplets and modulates triglyceride saturation and droplet size

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Authors

IWIan A. WindhamUniversity of North Carolina at Chapel Hill APAlex E. PowersUniversity of North Carolina at Chapel Hill JRJoey V. RagusaDuke University

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Implication

Experimental analysis reveals that apolipoprotein E regulates lipid droplet size and saturation in astrocytes, indicating that aberrant lipid morphology may drive Alzheimer's disease risk.

Key Points

Astrocytic apolipoprotein E targets lipid droplets directly during lipogenesis, where it controls organelle growth and prevents accumulation of unsaturated triglycerides.
Assessment using fatty acid pulse-chase assays reveals that astrocytes with depleted apolipoprotein E accumulate enlarged lipid droplets with elevated unsaturated triglyceride.
These findings highlight that aberrant lipid droplet morphology sensitizes astrocytes to lipid peroxidation; cell culture model, further preclinical validation is required.

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Windham et al. (2024) studied this question.

synapsesocial.com/papers/68e79c4cb6db64358770b798 https://doi.org/10.1083/jcb.202305003

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Implication

Experimental analysis reveals that apolipoprotein E regulates lipid droplet size and saturation in astrocytes, indicating that aberrant lipid morphology may drive Alzheimer's disease risk.

APOE traffics to astrocyte lipid droplets and modulates triglyceride saturation and droplet size

Discussion

Member takes

Implication

Key Points

Cite This Study

APOE traffics to astrocyte lipid droplets and modulates triglyceride saturation and droplet size

Discussion

Member takes

Implication

Key Points

Cite This Study

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