ID: h-b38d6762
Hypothesis
IRP2-Iron Axis Modulation to Reduce Ferroptotic Vulnerability
NOT RECOMMENDED.
EvidencePending (0%)📖 0 cit🗣 1 debates✓ 4 support✗ 4 oppose
✓ All Quality Gates Passed
🧪 Overview
NOT RECOMMENDED. Contains a biochemical error that undermines the hypothesis. IREB2 binds to IRE sequences in the 5' UTR of FTH1 mRNA and REPRESSES FTH1 translation. Therefore, IREB2 deletion would INCREASE FTH1 expression—opposite of the hypothesis. FTH1 overexpression in AD microglia may represent a compensatory protective response (iron sequestration). Ferroptosis inhibitors (ferrostatin-1 analogs) failed in human trials. IREB2 is poorly druggable (requires ASO approach).
🧬 Mechanism
🧬 Curated Mechanism Pathway
Curated pathway from expert analysis
flowchart TD
A["GSH Depletion<br/>Glutathione Synthesis Impairment"]
B["GPX4 Inactivation<br/>Phospholipid Peroxidase Loss"]
C["Lipid Peroxidation<br/>Polyunsaturated Fatty Acid Radical Chain"]
D["Peroxynitrite Formation<br/>Nitric Oxide plus Superoxide Convergence"]
E["Ferroptotic Cell Death<br/>Iron-Dependent Membrane Rupture"]
F["NAC Supplementation<br/>GSH Precursor and Peroxynitrite Scavenger"]
G["Ferrostatin-1<br/>Lipid Radical Termination and Ferroptosis Block"]
A --> B
B --> C
D --> C
C --> E
F -.->|"restores"| A
G -.->|"inhibits"| C
style A fill:#1a237e,stroke:#4fc3f7,color:#4fc3f7
style C fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a
style E fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a
style F fill:#1b5e20,stroke:#81c784,color:#81c784
style G fill:#1b5e20,stroke:#81c784,color:#81c784⚖️ Evidence
⚖️ Evidence Matrix4 supports4 contradicts
Supports
FTH1 overexpression in AD microglia indicates iron dysregulation and ferroptosis signature
Contradicts
IREB2 binds 5' UTR IRE sequences and REPRESSES FTH1 translation—IREB2 deletion would INCREASE FTH1
Contradicts
FTH1 overexpression may represent compensatory iron sequestration—reducing FTH1 could paradoxically increase oxidative stress
Contradicts
IREB2 knockout benefit may be due to neuronal iron deficiency, not microglial effects
📖 Linked Papers
No linked papers recorded for this hypothesis yet.
🏥 Translation
🧬 3D Protein Structure — IRP2-IRON
No curated PDB or AlphaFold mapping for IRP2-IRON yet. Search RCSB →
💉 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 IRP2-Iron.
Run python3 scripts/backfill_hypothesis_depmap.py to populate.
🏆 Tournament
🏆 Arenas / Elo
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🔮 Predictions
🔎 Predictions vs Observations2 predictions · 0 with recorded observations
| Prediction | Predicted | Observed | Status | Conf |
|---|---|---|---|---|
| IF ferrostatin-1 analog (MAG-FIN-1) is administered at 10 mg/kg/day via osmotic minipump to 5xFAD mice for 12 weeks THEN lipid peroxidation markers (4-HNE adducts) in prefrontal cortex will decrease b | Reduced lipid peroxidation indicating decreased ferroptotic vulnerability in Alzheimer's model mice receiving ferroptosis inhibitor treatment | — no observation — | pending | 0.60 |
| IF IREB2 is genetically deleted in 5xFAD mice (APP/PS1 double transgenic model of Alzheimer's disease) THEN FTH1 protein levels in cortical microglia will increase by >50% within 8 weeks compared to w | Increased FTH1 expression (iron sequestration) in microglia following IREB2 deletion, confirming the compensatory protective response hypothesis rather than fer | — no observation — | pending | 0.55 |
🔮 Falsifiable Predictions (2)
pendingconf 60%
IF ferrostatin-1 analog (MAG-FIN-1) is administered at 10 mg/kg/day via osmotic minipump to 5xFAD mice for 12 weeks THEN lipid peroxidation markers (4-HNE adducts) in prefrontal cortex will decrease by >40% compared to vehicle-treated 5xFAD mice, as measured by ELISA.
Predicted outcome: Reduced lipid peroxidation indicating decreased ferroptotic vulnerability in Alzheimer's model mice receiving ferroptosis inhibitor treatment
Falsification: 4-HNE levels show no significant difference (<20% change) between treatment and vehicle groups, indicating ferroptosis inhibitors lack efficacy in this model and supporting clinical trial failures
pendingconf 55%
IF IREB2 is genetically deleted in 5xFAD mice (APP/PS1 double transgenic model of Alzheimer's disease) THEN FTH1 protein levels in cortical microglia will increase by >50% within 8 weeks compared to wild-type littermates, as validated by Western blot and immunohistochemistry.
Predicted outcome: Increased FTH1 expression (iron sequestration) in microglia following IREB2 deletion, confirming the compensatory protective response hypothesis rathe
Falsification: FTH1 protein levels do not change significantly (<20% change) or decrease after IREB2 deletion, indicating the hypothesis incorrectly predicts FTH1 regulation
▸Metadatasource: v1_phase_c_backfill · origin_type: gap_debate
| source | v1_phase_c_backfill |
| origin_type | gap_debate |
| _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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