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Related Experiment Video

Updated: Apr 28, 2026

Author Spotlight: Tracing the Ferroptotic Signatures and Cell Death Dynamics in Medulloblastoma for Advanced Therapeutics
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Poly-GR promotes ferroptosis-associated vulnerability in C9orf72-ALS.

Chun-Yu Lin1,2, Wen-Chi Hsieh1,3, Shao-Ming Wang4,5

  • 1Neuroscience and Brain Disease Center, China Medical University, Taichung, 404328, Taiwan.

Cell & Bioscience
|April 26, 2026
PubMed
Summary
This summary is machine-generated.

Poly-GR protein drives ferroptosis in C9orf72-linked ALS by disrupting iron metabolism and antioxidant defenses. Targeting the Nrf2/Slc7a11 pathway and iron may offer new therapeutic strategies for this neurodegenerative disease.

Keywords:
C9orf72-ALSFerroptosisNrf2Poly-GRSlc7a11

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Biochemistry

Background:

  • Ferroptosis, a form of cell death linked to neurodegeneration, is implicated in C9orf72-linked ALS.
  • The precise mechanisms driving ferroptosis in this condition are not fully understood.

Purpose of the Study:

  • Investigate the role of poly-GR protein in ferroptosis.
  • Elucidate the regulatory mechanisms of ferroptosis in C9orf72-associated ALS.

Main Methods:

  • Assessed lipid peroxidation, iron levels, and reactive oxygen species in NSC34 cells expressing poly-GR.
  • Examined the impact of poly-GR on the Nrf2/Slc7a11 antioxidant pathway.
  • Utilized iron chelators and gene overexpression to evaluate ferroptosis mitigation.

Main Results:

  • Poly-GR expression increased markers of ferroptosis, including lipid peroxidation and iron accumulation.
  • Poly-GR suppressed the Nrf2/Slc7a11 pathway by inhibiting Nrf2 nuclear translocation and Slc7a11 transcription.
  • Restoring Nrf2 or Slc7a11, or using iron chelators, reduced ferroptosis and associated cell death.

Conclusions:

  • Poly-GR promotes ferroptosis in C9orf72-ALS by disrupting redox homeostasis and iron metabolism.
  • The Nrf2/Slc7a11 pathway and labile iron regulation are potential therapeutic targets for C9orf72-associated ALS.