ID: h-b8724fde927e
Hypothesis
Neuronal-specific domain stabilization
Axon initial segment (AIS) infrastructure provides additional regulatory context that consolidates MAP-established domains; in fibroblasts, domains are less stable without this architectural support.
EvidenceModerate (50%)📖 6 cit🗣 1 debates✓ 6 support✗ 2 oppose
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🧪 Overview
Axon initial segment (AIS) infrastructure provides additional regulatory context that consolidates MAP-established domains; in fibroblasts, domains are less stable without this architectural support
Prediction: Transplanting AIS components into fibroblasts will produce more robust and long-lasting tau/MAP6 domain segregation
🧬 Mechanism
🧬 Curated Mechanism Pathway
Curated pathway from expert analysis
flowchart TD
A["MAPT/Tau Protein<br/>Microtubule Stabilizer"]
B["CDK5/GSK3B Activation<br/>Kinase Dysregulation"]
C["Tau Hyperphosphorylation<br/>Ser396/Thr231/Ser202"]
D["Tau Detachment<br/>Microtubule Destabilized"]
E["Tau Oligomers<br/>Paired Helical Filaments"]
F["Neurofibrillary Tangles<br/>Intraneuronal Inclusions"]
G["Axonal Transport Failure<br/>Synaptic Dysfunction"]
H["Neurodegeneration<br/>Tauopathy Spread"]
A --> B
B --> C
C --> D
D --> E
E --> F
D --> G
G --> H
F --> H
style A fill:#1a237e,stroke:#4fc3f7,color:#4fc3f7
style C fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a
style H fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a⚖️ Evidence
⚖️ Evidence Matrix6 supports2 contradicts
Supports
Axon initial segment (AIS) infrastructure provides additional regulatory context that consolidates MAP-established domains; in fibroblasts, domains are less stable without this architectural support
Supports
Autism-associated ANK2 regulates embryonic neurodevelopment.
Supports
A Mutation in the ANK2 Gene Causing ASD and a Review of the Literature.
Supports
Self-limited familial focal epilepsy caused by ANK2 variants: A potentially under-recognized condition.
Supports
Roles of ANK2/ankyrin-B in neurodevelopmental disorders: Isoform functions and implications for autism spectrum disorder and epilepsy.
Supports
ANK2 loss-of-function variants are associated with epilepsy, and lead to impaired axon initial segment plasticity and hyperactive network activity in hiPSC-derived neuronal networks.
Contradicts
Ankyrin-G and AIS organization depend on many binding partners, making ANK2-only domain stabilization an incomplete model of neuronal compartment maintenance.
Contradicts
AIS abnormalities are emphasized in neurodevelopmental disorders, so evidence for direct neurodegenerative therapeutic relevance is indirect.
📖 Linked Papers
No linked papers recorded for this hypothesis yet.
🏥 Translation
🧬 3D Protein Structure — ANK2
No curated PDB or AlphaFold mapping for ANK2 yet. Search RCSB →
🧠 GTEx v10 Brain ExpressionJSON
Median TPM across 13 brain regions for ANK2 from GTEx v10.
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 ANK2.
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
▼ 0.2%
Volatility
Medium
0.0307
Events (7d)
2
Price History
▲0.5%💾 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 we express the neuronal ANK2 isoform (ANK2-G) in human fibroblasts via lentiviral transduction, THEN we will observe a statistically significant increase in tau/MAP6 domain stability (measured by F | Enhanced domain stability in fibroblasts expressing neuronal ANK2, manifested as slower fluorescence recovery in FRAP assays and reduced domain dissolution even | — no observation — | pending | 0.35 |
| IF we acutely disrupt AIS integrity in mature hippocampal neurons using pharmacological (sodium channel blocker) or genetic (ankyrin-G CRISPR knockout) approaches, THEN we will observe a >50% decrease | Rapid destabilization of microtubule-associated protein domains following AIS disruption, evidenced by increased FRAP mobile fraction and decreased domain dwell | — no observation — | pending | 0.45 |
🔮 Falsifiable Predictions (2)
pendingconf 45%
IF we acutely disrupt AIS integrity in mature hippocampal neurons using pharmacological (sodium channel blocker) or genetic (ankyrin-G CRISPR knockout) approaches, THEN we will observe a >50% decrease in tau/MAP6 domain stability (measured by increased mobile fraction in FRAP and shorter domain life
Predicted outcome: Rapid destabilization of microtubule-associated protein domains following AIS disruption, evidenced by increased FRAP mobile fraction and decreased do
Falsification: Domain stability metrics remain unchanged (within 10%) after AIS disruption, or domains become MORE stable, indicating AIS is not the primary architectural constraint for MAP domain maintenance in neu
pendingconf 35%
IF we express the neuronal ANK2 isoform (ANK2-G) in human fibroblasts via lentiviral transduction, THEN we will observe a statistically significant increase in tau/MAP6 domain stability (measured by FRAP recovery half-time increasing by >40%) within 5-7 days post-transduction, compared to GFP-transd
Predicted outcome: Enhanced domain stability in fibroblasts expressing neuronal ANK2, manifested as slower fluorescence recovery in FRAP assays and reduced domain dissol
Falsification: FRAP recovery half-times in ANK2-expressing fibroblasts remain statistically indistinguishable from control fibroblasts (p > 0.05), or domain stability metrics show <20% improvement, indicating AIS ar
▸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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