ID: h-d69f2fdd
Hypothesis
CNTF-JAK/STAT3 Reprogramming of Trained Microglia to Neuroprotective State
Astrocyte-derived CNTF binds CNTFRα-GP130-LIFRβ receptor complex on microglia, activating JAK1/2 → STAT3 phosphorylation.
EvidencePending (0%)📖 0 cit🗣 1 debates✓ 3 support✗ 3 oppose
✓ All Quality Gates Passed
🧪 Overview
Astrocyte-derived CNTF binds CNTFRα-GP130-LIFRβ receptor complex on microglia, activating JAK1/2 → STAT3 phosphorylation. Nuclear STAT3 recruits HDAC3 and GLCCR2 corepressors to reset trained enhancers while inducing neuroprotective genes (ARG1, CD206, IL10). Context-dependent effects and speculative corepressor mechanism limit confidence.
🧬 Mechanism
🧬 Curated Mechanism Pathway
Curated pathway from expert analysis
flowchart TD
A["Cytokine Receptor Engagement<br/>IL6R/GP130 Activation"]
B["JAK1 Activation<br/>Kinase Domain Autophosphorylation"]
C["STAT3 Phosphorylation<br/>SASP Transcriptional Program"]
D["Microglial Pro-inflammatory State<br/>TNF and IL1B Release"]
E["Synaptic Toxicity<br/>Excitatory Damage and Dendritic Loss"]
F["JAK1 Inhibition<br/>STAT3 Cascade Disruption and Inflammation Resolution"]
A --> B
B --> C
C --> D
D --> E
F -.->|"blocks"| C
style A fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a
style E fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a
style F fill:#1b5e20,stroke:#81c784,color:#81c784⚖️ Evidence
⚖️ Evidence Matrix3 supports3 contradicts
Contradicts
STAT3 in microglia promotes pro-inflammatory cytokine production in EAE; context-dependent
Contradicts
CNTF effects demonstrated in optic nerve crush, not chronic neurodegeneration
Contradicts
Astrogliosis-associated CNTF release is consequence of neuroinflammation, not preventive mechanism
📖 Linked Papers
No linked papers recorded for this hypothesis yet.
🏥 Translation
🧬 3D Protein Structure — CNTFRΑ
No curated PDB or AlphaFold mapping for CNTFRΑ 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 CNTFRα.
Run python3 scripts/backfill_hypothesis_depmap.py to populate.
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🔮 Predictions
🔎 Predictions vs Observations2 predictions · 0 with recorded observations
| Prediction | Predicted | Observed | Status | Conf |
|---|---|---|---|---|
| IF microglia are treated with CNTF for 4 hours, THEN ChIP-seq will reveal STAT3 binding co-enriched with HDAC3 and GLCCR2 at promoters of ARG1, CD206, and IL10 at trained enhancer regions, exceeding I | Co-occupancy of STAT3, HDAC3, and GLCCR2 at ≥75% of upregulated neuroprotective gene promoters, with genomic colocalization confirmed by ChIP-seq peak overlap a | — no observation — | pending | 0.20 |
| IF primary mouse microglia are treated with 50 ng/mL CNTF for 30 minutes, THEN phospho-STAT3(Y705) levels will increase by at least 2-fold relative to vehicle control as measured by Western blot withi | STAT3 phosphorylation (Y705) will increase ≥2-fold in microglia following CNTF treatment, coinciding with upregulated ARG1, CD206, and IL10 mRNA expression (≥1. | — no observation — | pending | 0.35 |
🔮 Falsifiable Predictions (2)
pendingconf 35%
IF primary mouse microglia are treated with 50 ng/mL CNTF for 30 minutes, THEN phospho-STAT3(Y705) levels will increase by at least 2-fold relative to vehicle control as measured by Western blot within 24 hours.
Predicted outcome: STAT3 phosphorylation (Y705) will increase ≥2-fold in microglia following CNTF treatment, coinciding with upregulated ARG1, CD206, and IL10 mRNA expre
Falsification: No significant change in p-STAT3(Y705) levels (<1.5-fold) or no induction of neuroprotective genes (ARG1, CD206, IL10) despite CNTF treatment would refute the receptor-complex signaling hypothesis.
pendingconf 20%
IF microglia are treated with CNTF for 4 hours, THEN ChIP-seq will reveal STAT3 binding co-enriched with HDAC3 and GLCCR2 at promoters of ARG1, CD206, and IL10 at trained enhancer regions, exceeding IgG background by ≥3-fold.
Predicted outcome: Co-occupancy of STAT3, HDAC3, and GLCCR2 at ≥75% of upregulated neuroprotective gene promoters, with genomic colocalization confirmed by ChIP-seq peak
Falsification: STAT3 binds target gene promoters but HDAC3 and/or GLCCR2 show no significant enrichment (≤1.5-fold over IgG) at those sites would falsify the corepressor recruitment mechanism, suggesting alternative
▸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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