ArticleCommunications biology2023
An iPSC-derived astrocyte model of fragile X syndrome exhibits dysregulated cholesterol homeostasis.
Article in Communications biology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 7 citations in OpenAlex.
- Suppression of astrocyte BMP signaling improves molecular signatures and functional deficits in a fragile X syndrome mouse model.Nature communications · 2026Article
- Associations between plasma 24(S)-hydroxycholesterol and neuropsychological profile in fragile X syndrome.Journal of lipid research · 2025Article
- Reverse cholesterol transport: current assay methods, alterations with disease and response to therapeutic intervention.Frontiers in cardiovascular medicine · 2025Review
- Neuron-Astrocyte Interactions: A Human Perspective.Advances in neurobiology · 2024Review
- Astrocytes in fragile X syndrome.Frontiers in cellular neuroscience · 2023Review
Corrections and comments
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Authors and funding
11 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cholesterol is an essential membrane structural component and steroid hormone precursor, and is involved in numerous signaling processes. Astrocytes regulate brain cholesterol homeostasis and they supply cholesterol to the needs of neurons. ATP-binding cassette transporter A1 (ABCA1) is the main cholesterol efflux transporter in astrocytes. Here we show dysregulated cholesterol homeostasis in astrocytes generated from human induced pluripotent stem cells (iPSCs) derived from males with fragile X syndrome (FXS), which is the most common cause of inherited intellectual disability. ABCA1 levels are reduced in FXS human and mouse astrocytes when compared with controls. Accumulation of cholesterol associates with increased desmosterol and polyunsaturated phospholipids in the lipidome of FXS mouse astrocytes. Abnormal astrocytic responses to cytokine exposure together with altered anti-inflammatory and cytokine profiles of human FXS astrocyte secretome suggest contribution of inflammatory factors to altered cholesterol homeostasis. Our results demonstrate changes of astrocytic lipid metabolism, which can critically regulate membrane properties and affect cholesterol transport in FXS astrocytes, providing target for therapy in FXS.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.