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The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
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  1. Home
  3. Altered Lipid Homeostasis In Mutant Fusr521h Astrocytes From Hipscs.
  1. Home
  3. Altered Lipid Homeostasis In Mutant Fusr521h Astrocytes From Hipscs.

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Altered Lipid Homeostasis in Mutant FUSR521H Astrocytes from HiPSCs.

Yingli Zhu1, Katrien Neyrinck2, Thibaut Burg3,4

  • 1Department of Development and Regeneration, Stem Cell Institute, KU Leuven, 3000, Louvain, Belgium. zhuyingli1992@163.com.

Molecular Neurobiology
|June 14, 2025

View abstract on PubMed

Summary
This summary is machine-generated.

Mutations in the fused in sarcoma (FUS) gene cause amyotrophic lateral sclerosis (ALS). FUS-ALS astrocytes show reduced glycerophospholipids, particularly phosphatidylcholine and phosphatidylinositol, impacting CNS cell types.

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Area of Science:

  • Neuroscience
  • Genetics
  • Cell Biology

Background:

  • Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disorder marked by motor neuron loss.
  • Mutations in the fused in sarcoma (FUS) gene are linked to early-onset, rapidly progressing ALS.
  • Dysfunctional glial cells, especially astrocytes, play a crucial role in ALS progression.

Purpose of the Study:

  • To investigate lipid metabolism alterations in astrocytes derived from FUS-mutant human induced pluripotent stem cells (hiPSCs).
  • To determine if lipid dysregulation extends to other central nervous system (CNS) cell types in FUS-ALS.

Main Methods:

  • Generated FUSR521H mutant and isogenic astrocytes from hiPSCs using inducible SOX9 overexpression.
  • Performed lipidomic analysis to quantify lipid levels in mutant and control astrocytes.
  • Examined lipid profiles in FUSR521H mutant oligodendroglial progenitors and motor neurons.

    • Main Results:

    • FUSR521H mutant astrocytes exhibited significant deficiencies in glycerophospholipids.
    • Reduced levels of phosphatidylcholine (PC) and phosphatidylinositol (PI) were prominent in mutant astrocytes.
    • Decreased PC levels were also detected in FUSR521H mutant oligodendroglial progenitors and motor neurons.

    Conclusions:

    • FUS-ALS is associated with widespread glycerophospholipid metabolic dysregulation across multiple CNS cell types.
    • Lipid deficiencies, particularly in PC and PI, may contribute to the pathogenesis of FUS-ALS.
    • Further research into lipid dysregulation is warranted for understanding and potentially treating FUS-ALS.