ID: h-spark-b94e9126c05d
Hypothesis
E2E direct hypothesis a980051375
Hypothesis: TREM2 lipid handling modulates microglial lysosomal stress in early AD.
EvidencePending (0%)📖 5 cit🗣 1 debates✓ 5 support✗ 2 oppose
🧪 Overview
Hypothesis: TREM2 lipid handling modulates microglial lysosomal stress in early AD.
🧬 Mechanism
🧬 Curated Mechanism Pathway
Curated pathway from expert analysis
flowchart TD A["Amyloid-beta accumulation"] B["TREM2 activation"] C["SYK pathway engagement"] D["Microglial lipid handling"] E["Lysosomal stress response"] F["Microglial activation state"] G["Alzheimer's disease progression"] A --> B B --> C B --> D D --> E C --> F E --> F F --> G A["Amyloid-beta accumulation"]:::red B["TREM2 activation"]:::blue C["SYK pathway engagement"]:::blue D["Microglial lipid handling"]:::blue E["Lysosomal stress response"]:::red F["Microglial activation state"]:::blue G["Alzheimer's disease progression"]:::red classDef red fill:#ef5350,stroke:#b71c1c,color:#ffffff classDef blue fill:#4fc3f7,stroke:#0277bd,color:#000000 classDef green fill:#81c784,stroke:#2e7d32,color:#000000 classDef yellow fill:#ffd54f,stroke:#f9a825,color:#000000
⚖️ Evidence
⚖️ Evidence Matrix5 supports2 contradicts
Supports
TREM2 drives microglia response to amyloid-β via SYK-dependent and -independent pathways.
Supports
A Unique Microglia Type Associated with Restricting Development of Alzheimer's Disease.
Supports
Anti-human TREM2 induces microglia proliferation and reduces pathology in an Alzheimer's disease model.
Contradicts
Microglia-Mediated Neuroinflammation: A Potential Target for the Treatment of Cardiovascular Diseases.
📖 Linked Papers
No linked papers recorded for this hypothesis yet.
🏥 Translation
🧬 3D Protein Structure — TREM2
🧠 GTEx v10 Brain ExpressionJSON
Median TPM across 13 brain regions for TREM2 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 TREM2.
Run python3 scripts/backfill_hypothesis_depmap.py to populate.
🏆 Tournament
🏆 Arenas / Elo
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📊 Market Indicators
7d Trend
↔
Stable
7d Momentum
▲ 0.2%
Volatility
High
0.1005
Events (7d)
2
Price History
▼0.6%💾 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 TREM2 lipid-sensing function is pharmacologically enhanced using an agonistic antibody (e.g., AL002c) in 5xFAD mice during early disease stage (3-4 months), THEN microglial lysosomal stress markers | At least 30% reduction in composite lysosomal stress score (LAMP1 intensity + cathepsin D activity + lipid droplet number) in entorhinal cortex and hippocampus | — no observation — | pending | 0.65 |
| IF microglia are exposed to a lipid-rich environment (100 μg/mL oxidized LDL) ex vivo, THEN TREM2-deficient iPSC-derived microglia will exhibit at least 50% greater lysosomal membrane permeabilization | Galectin-3 puncta count ≥50% higher in TREM2 knockout iPSC-microglia vs. isogenic controls following oxLDL exposure, with corresponding ≥40% increase in ROS pro | — no observation — | pending | 0.58 |
🔮 Falsifiable Predictions (2)
pendingconf 65%
IF TREM2 lipid-sensing function is pharmacologically enhanced using an agonistic antibody (e.g., AL002c) in 5xFAD mice during early disease stage (3-4 months), THEN microglial lysosomal stress markers (LAMP1+ area, cathepsin D activity, lipid droplet count) will decrease by at least 30% compared to
Predicted outcome: At least 30% reduction in composite lysosomal stress score (LAMP1 intensity + cathepsin D activity + lipid droplet number) in entorhinal cortex and hi
Falsification: No significant reduction (<15%) in any of the three lysosomal stress markers, or a significant increase in lysosomal stress despite TREM2 agonism, indicating TREM2 lipid handling is not coupled to lys
pendingconf 58%
IF microglia are exposed to a lipid-rich environment (100 μg/mL oxidized LDL) ex vivo, THEN TREM2-deficient iPSC-derived microglia will exhibit at least 50% greater lysosomal membrane permeabilization (measured by galectin-3 puncta per cell) compared to gene-corrected controls within 48 hours of tre
Predicted outcome: Galectin-3 puncta count ≥50% higher in TREM2 knockout iPSC-microglia vs. isogenic controls following oxLDL exposure, with corresponding ≥40% increase
Falsification: Equivalent (<20% difference) galectin-3 puncta counts and lysosomal permeabilization markers between TREM2-deficient and control microglia, indicating lipid exposure does not engage TREM2-dependent pr
▸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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