ID: h-6726853448
Hypothesis
NRF2 failure lowers antioxidant reserve and permits recurrent mitochondrial ROS escalation
Insufficient KEAP1-NRF2-ARE signaling reduces glutathione synthesis, quinone detoxification, and peroxide buffering, leaving neurons unable to extinguish mitochondrial and cytosolic ROS once stress begins.
EvidencePending (0%)📖 8 cit🗣 1 debates✓ 8 support✗ 2 oppose
✓ All Quality Gates Passed
🧪 Overview
Insufficient KEAP1-NRF2-ARE signaling reduces glutathione synthesis, quinone detoxification, and peroxide buffering, leaving neurons unable to extinguish mitochondrial and cytosolic ROS once stress begins. The resulting oxidative injury further impairs transcriptional competence and mitochondrial function, creating a permissive feedback architecture. This is a strong systems-level modifier, though less clearly the singular core loop than PARP or ferroptosis models.
🧬 Mechanism
🧬 Curated Mechanism Pathway
Curated pathway from expert analysis
flowchart TD
A["NFE2L2; KEAP1; HMOX1; NQO1; GCLC; TXNRD1<br/>Primary Target"]
B["Biological Process 1<br/>Mechanistic Step A"]
C["Biological Process 2<br/>Mechanistic Step B"]
D["Output Phenotype<br/>Disease Effect"]
A --> B
B --> C
C --> D
style A fill:#1a237e,stroke:#4fc3f7,color:#4fc3f7
style D fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a⚖️ Evidence
⚖️ Evidence Matrix8 supports2 contradicts
Supports
AMPK protects against alcohol-induced liver injury through UQCRC2 to up-regulate mitophagy.
Supports
Isoliquiritigenin alleviates cerebral ischemia-reperfusion injury by reducing oxidative stress and ameliorating mitochondrial dysfunction via activating the Nrf2 pathway.
Supports
Mechanisms of mitochondrial dysfunction and their impact on age-related macular degeneration.
Contradicts
Protection from NRF2 activation may be largely astrocyte-mediated and not prove neuronal loop dominance.
Contradicts
Broad NRF2 activation is pleiotropic and may not directly define the recursive mechanism sustaining cell death.
📖 Linked Papers
No linked papers recorded for this hypothesis yet.
🏥 Translation
🧬 3D Protein Structure — NFE2L2;
No curated PDB or AlphaFold mapping for NFE2L2; yet. Search RCSB →
🧠 GTEx v10 Brain ExpressionJSON
Median TPM across 13 brain regions for NFE2L2; KEAP1; HMOX1; NQO1; GCLC; TXNRD1 from GTEx v10.
💉 Clinical Trials
No clinical trials data linked to this hypothesis yet.
No curated ClinVar variants loaded for this hypothesis.
Run scripts/backfill_clinvar_variants.py to fetch P/LP/VUS variants.
No DepMap CRISPR Chronos data found for NFE2L2; KEAP1; HMOX1; NQO1; GCLC; TXNRD1.
Run python3 scripts/backfill_hypothesis_depmap.py to populate.
💰 Estimated Development
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🔮 Predictions
🔎 Predictions vs Observations2 predictions · 0 with recorded observations
| Prediction | Predicted | Observed | Status | Conf |
|---|---|---|---|---|
| IF NRF2 is deleted selectively in neurons using CamKIIa-Cre;Nfe2l2 flox/flox mice (or silenced via AAV-shNRF2 injected into substantia nigra), THEN baseline mitochondrial H2O2 emission from isolated b | Elevated baseline mitochondrial ROS emission, reduced neuronal NAD+/NADH ratio, and increased protein carbonylation in neuron-specific NRF2-deficient mice | — no observation — | pending | 0.65 |
| IF pharmacological NRF2 activation is achieved via sulforaphane or bardoxolone methyl (30 mg/kg/day oral gavage for 4 weeks starting at disease onset) in the MPTP mouse model of dopaminergic neurodege | Reduced oxidative damage markers (4-HNE adducts, 8-OHdG) and preserved dopaminergic markers (TH+ terminals) in NRF2-activated mice versus vehicle controls | — no observation — | pending | 0.72 |
🔮 Falsifiable Predictions (2)
pendingconf 72%
IF pharmacological NRF2 activation is achieved via sulforaphane or bardoxolone methyl (30 mg/kg/day oral gavage for 4 weeks starting at disease onset) in the MPTP mouse model of dopaminergic neurodegeneration, THEN striatal 4-HNE protein adducts and 8-OHdG in mitochondrial DNA will decrease by >50%
Predicted outcome: Reduced oxidative damage markers (4-HNE adducts, 8-OHdG) and preserved dopaminergic markers (TH+ terminals) in NRF2-activated mice versus vehicle cont
Falsification: No significant reduction in oxidative stress biomarkers OR no preservation of TH+ terminals in NRF2 activator-treated mice compared to vehicle controls (p > 0.05)
pendingconf 65%
IF NRF2 is deleted selectively in neurons using CamKIIa-Cre;Nfe2l2 flox/flox mice (or silenced via AAV-shNRF2 injected into substantia nigra), THEN baseline mitochondrial H2O2 emission from isolated brain mitochondria will increase by >40% at 3 months of age, AND TH ENEURONAL NAD+/NADH ratio will de
Predicted outcome: Elevated baseline mitochondrial ROS emission, reduced neuronal NAD+/NADH ratio, and increased protein carbonylation in neuron-specific NRF2-deficient
Falsification: No increase in mitochondrial H2O2 emission (difference <20%) OR no decrease in NAD+/NADH ratio OR no increase in protein carbonylation in neuron-specific NRF2 knockout mice versus controls (p > 0.05)
▸Metadatasource: v1_phase_c_backfill · origin_type: debate_synthesizer
| source | v1_phase_c_backfill |
| origin_type | debate_synthesizer |
| _schema_version | 1 |
📊 Evidence Profile
Evidence Balance
+0%
Certainty
0%
Debates
0
Incoming
0
Outgoing
0
0 supporting
0 contradicting
0 neutral
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