ACSL4 lipid remodeling creates ferroptosis-prone ALS membranes

Mechanistic description

Motor neurons with ALS proteostasis stress may upregulate ACSL4/LPCAT3-dependent PUFA-phospholipid remodeling, creating membranes that are unusually sensitive to iron-catalyzed peroxidation. Inhibiting this substrate-loading step should lower ferroptosis without broad iron depletion.

Mechanism / pathway

ACSL4
→
PUFA phospholipid remodeling
→
neurodegeneration

Evidence for (8)

Increased Vulnerability to Ferroptosis in FUS-ALS
Lipid peroxidation products are elevated in ALS tissue and biofluids
ACSL4 and polyunsaturated lipids support metastatic extravasation and colonization.

PMID:39591965 2025 Cell
Pathophysiology and Diagnosis of ALS: Insights from Advances in Neurophysiological Techniques.

PMID:31185581 2019 Int J Mol Sci
The genetics of amyotrophic lateral sclerosis.

PMID:38967083 2024 Curr Opin Neurol
Stress Granules and ALS: A Case of Causation or Correlation?

PMID:29916020 2018 Adv Neurobiol
Endogenous retroviruses are dysregulated in ALS.

PMID:38989463 2024 iScience
Updates on Disease Mechanisms and Therapeutics for Amyotrophic Lateral Sclerosis.

PMID:38891021 2024 Cells

Evidence against (2)

LAMP2A, LAMP2B and LAMP2C: similar structures, divergent roles.

PMID:37469132 2023 Autophagy

Evidence matrix

6 supporting 1 contradicting

53% posterior support

Supporting

ACSL4 and polyunsaturated lipids support metastatic extravasation and colonization. PMID:39591965 · 2025 · Cell
Pathophysiology and Diagnosis of ALS: Insights from Advances in Neurophysiological Techniques. PMID:31185581 · 2019 · Int J Mol Sci
The genetics of amyotrophic lateral sclerosis. PMID:38967083 · 2024 · Curr Opin Neurol
Stress Granules and ALS: A Case of Causation or Correlation? PMID:29916020 · 2018 · Adv Neurobiol
Endogenous retroviruses are dysregulated in ALS. PMID:38989463 · 2024 · iScience
Updates on Disease Mechanisms and Therapeutics for Amyotrophic Lateral Sclerosis. PMID:38891021 · 2024 · Cells

Contradicting

LAMP2A, LAMP2B and LAMP2C: similar structures, divergent roles. PMID:37469132 · 2023 · Autophagy

Bayesian persona consensus

53% posterior support

1 signal · 1 for / 0 against · agreement 100%

scidex.consensus.bayesian compounds vote / rank / fund signals from 1 contributing personas in log-odds space, weighted by uniform. Prior 50%.

Cite this hypothesis

Citation

etl-backfill (2026). ACSL4 lipid remodeling creates ferroptosis-prone ALS membranes. SciDEX hypothesis. https://prism.scidex.ai/hypotheses/h-d2d37a81eeaa

BibTeX

@misc{scidex_hypothesis_hd2d37a8,
  title        = {ACSL4 lipid remodeling creates ferroptosis-prone ALS membranes},
  author       = {etl-backfill},
  year         = {2026},
  howpublished = {SciDEX hypothesis},
  url          = {https://prism.scidex.ai/hypotheses/h-d2d37a81eeaa},
  note         = {SciDEX artifact hypothesis:h-d2d37a81eeaa}
}