ID: h-338bb5c155
Hypothesis
Baseline Elevation from ER Stress Is Epiphenomenon, Not Lysosomal Signal Amplification (H6)
G2019S causes elevated baseline RAB10 phosphorylation via chronic ER stress pathway (PERK/eIF2α) unrelated to lysosomal volume-sensing.
EvidencePending (0%)📖 0 cit🗣 1 debates✓ 3 support✗ 2 oppose
✓ All Quality Gates Passed
🧪 Overview
G2019S causes elevated baseline RAB10 phosphorylation via chronic ER stress pathway (PERK/eIF2α) unrelated to lysosomal volume-sensing. True signal amplification is pathogenic; baseline elevation is compensatory. PERK inhibitor GSK2606414 can test whether baseline elevation depends on ER stress in both genotypes.
🧬 Mechanism
🧬 Curated Mechanism Pathway
Curated pathway from expert analysis
flowchart TD
A["ER Stress<br/>Unfolded Protein Response"]
B["PERK Activation<br/>Kinase"]
C["eIF2alpha<br/>Phosphorylation"]
D["Integrated Stress<br/>Response (ISR)"]
E["Synaptic Protein<br/>Translation Suppression"]
F["LRRK2 Mutation<br/>G2019S"]
G["Lysosomal<br/>Dysfunction"]
H["Neuronal<br/>Death"]
A --> B
B --> C
C --> D
D --> E
F --> G
G --> H
E --> H
style A fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a
style H fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a⚖️ Evidence
⚖️ Evidence Matrix3 supports2 contradicts
Supports
Parkinson's Disease: The Neurodegenerative Enigma Under the "Undercurrent" of Endoplasmic Reticulum Stress.
Contradicts
PERK activation causes S935 dephosphorylation predicting lower activity, not elevated RAB10-p
📖 Linked Papers
No linked papers recorded for this hypothesis yet.
🏥 Translation
🧬 3D Protein Structure — PERK
No curated PDB or AlphaFold mapping for PERK 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 PERK,LRRK2.
Run python3 scripts/backfill_hypothesis_depmap.py to populate.
🏆 Tournament
🏆 Arenas / Elo
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📊 Market Indicators
7d Trend
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Stable
7d Momentum
▼ 0.6%
Volatility
Low
0.0042
Events (7d)
3
Price History
▼8.0%💾 Resource Usage
No resource usage or linked notebooks recorded for this hypothesis yet.
🔮 Predictions
🔎 Predictions vs Observations2 predictions · 0 with recorded observations
| Prediction | Predicted | Observed | Status | Conf |
|---|---|---|---|---|
| IF human iPSC-derived dopaminergic neurons carrying G2019S LRRK2 are treated with 1 μM GSK2606414 (PERK inhibitor) for 24 hours, THEN baseline p-T72 RAB10 will decrease by ≥50% compared to vehicle-tre | Significant reduction in RAB10 phosphorylation at baseline in G2019S neurons following PERK inhibition, with no change in total RAB10 protein levels | — no observation — | pending | 0.75 |
| IF baseline RAB10 phosphorylation is normalized by 72-hour PERK inhibition and neurons are then challenged with 20 μM chloroquine for 2 hours, THEN the relative fold-increase in p-T72 RAB10 will be id | Lysosomal stress-induced RAB10 phosphorylation amplification remains intact after PERK blockade, demonstrating pathway independence from chronic ER stress | — no observation — | pending | 0.65 |
🔮 Falsifiable Predictions (2)
pendingconf 75%
IF human iPSC-derived dopaminergic neurons carrying G2019S LRRK2 are treated with 1 μM GSK2606414 (PERK inhibitor) for 24 hours, THEN baseline p-T72 RAB10 will decrease by ≥50% compared to vehicle-treated G2019S neurons within 48 hours of compound addition.
Predicted outcome: Significant reduction in RAB10 phosphorylation at baseline in G2019S neurons following PERK inhibition, with no change in total RAB10 protein levels
Falsification: GSK2606414 treatment fails to reduce baseline p-T72 RAB10 levels in G2019S neurons below 75% of vehicle control, indicating baseline elevation is independent of PERK/eIF2α signaling
pendingconf 65%
IF baseline RAB10 phosphorylation is normalized by 72-hour PERK inhibition and neurons are then challenged with 20 μM chloroquine for 2 hours, THEN the relative fold-increase in p-T72 RAB10 will be identical (±20%) between GSK2606414-pretreated G2019S neurons and vehicle-pretreated G2019S neurons.
Predicted outcome: Lysosomal stress-induced RAB10 phosphorylation amplification remains intact after PERK blockade, demonstrating pathway independence from chronic ER st
Falsification: GSK2606414 pretreatment abolishes or reduces the chloroquine-induced RAB10 phosphorylation increase by >50% in G2019S neurons, disproving the hypothesis that lysosomal amplification is mechanistically
▸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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