🧪
hypothesis

Synaptic NMDAR Subtype Targeting Prevents Excitotoxicity

Hypothesis

Synaptic NMDAR Subtype Targeting Prevents Excitotoxicity

Selective GluN2A activation or GluN2B inhibition shifts balance from excitotoxic extrasynaptic signaling toward neuroprotective synaptic signaling.
🧬 GRIN2A/GRIN2B🩺 neurodegeneration🎯 Composite 52%💱 $0.53▼1.5%proposed
EvidencePending (0%)📖 0 cit🗣 1 debates 3 support 3 oppose
✓ All Quality Gates Passed
Mechanistic 0.52 (15%) Evidence 0.55 (15%) Novelty 0.52 (12%) Feasibility 0.48 (12%) Impact 0.58 (12%) Druggability 0.55 (10%) Safety 0.45 (8%) Competition 0.58 (6%) Data Avail. 0.52 (5%) Reproducible 0.48 (5%) KG Connect 0.50 (8%) 0.520 composite
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arXiv PreprintNeurIPSNature MethodsPLOS ONE
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Composite52%

🧪 Overview

Selective GluN2A activation or GluN2B inhibition shifts balance from excitotoxic extrasynaptic signaling toward neuroprotective synaptic signaling. Deprioritized due to memantine's modest clinical efficacy and technical challenges in confirming in vivo compartmentalization.

🧬 Mechanism

🔗 Mechanism from KG for GRIN2A/GRIN2B

Auto-built from this analysis's top knowledge-graph edges.

graph TD
    NRF2["NRF2"] -->|regulates| ARE_gene_transcription["ARE gene transcription"]
    NFE2L2["NFE2L2"] -->|regulates| ARE_gene_transcription_1["ARE gene transcription"]
    NRF2_activation["NRF2 activation"] -->|protective against| neurodegenerative_disease["neurodegenerative diseases"]
    NRF2_nuclear_localization["NRF2 nuclear localization"] -->|biomarker for| Alzheimer_s_disease["Alzheimer's disease"]
    NQO1["NQO1"] -->|regulates| redox_homeostasis["redox homeostasis"]
    HO_1["HO-1"] -->|regulates| redox_homeostasis_2["redox homeostasis"]
    TREM2["TREM2"] -->|regulates| microglial_metabolic_repr["microglial metabolic reprogramming"]
    TREM2_deficiency["TREM2 deficiency"] -->|causes| impaired_amyloid_plaque_e["impaired amyloid plaque enclosure"]
    TREM2_agonism["TREM2 agonism"] -->|protective against| amyloid_associated_neurot["amyloid-associated neurotoxicity"]
    neuronal_activity["neuronal activity"] -->|regulates| tau_propagation["tau propagation"]
    CDK5["CDK5"] -->|regulates| tau_packaging_into_exosom["tau packaging into exosomes"]
    NLRP3_inflammasome_activa["NLRP3 inflammasome activation"] -->|causes| IL_1__release["IL-1β release"]
    style NRF2 fill:#ce93d8,stroke:#333,color:#000
    style ARE_gene_transcription fill:#81c784,stroke:#333,color:#000
    style NFE2L2 fill:#ce93d8,stroke:#333,color:#000
    style ARE_gene_transcription_1 fill:#4fc3f7,stroke:#333,color:#000
    style NRF2_activation fill:#4fc3f7,stroke:#333,color:#000
    style neurodegenerative_disease fill:#ef5350,stroke:#333,color:#000
    style NRF2_nuclear_localization fill:#4fc3f7,stroke:#333,color:#000
    style Alzheimer_s_disease fill:#ef5350,stroke:#333,color:#000
    style NQO1 fill:#4fc3f7,stroke:#333,color:#000
    style redox_homeostasis fill:#4fc3f7,stroke:#333,color:#000
    style HO_1 fill:#4fc3f7,stroke:#333,color:#000
    style redox_homeostasis_2 fill:#4fc3f7,stroke:#333,color:#000
    style TREM2 fill:#4fc3f7,stroke:#333,color:#000
    style microglial_metabolic_repr fill:#4fc3f7,stroke:#333,color:#000
    style TREM2_deficiency fill:#4fc3f7,stroke:#333,color:#000
    style impaired_amyloid_plaque_e fill:#4fc3f7,stroke:#333,color:#000
    style TREM2_agonism fill:#4fc3f7,stroke:#333,color:#000
    style amyloid_associated_neurot fill:#4fc3f7,stroke:#333,color:#000
    style neuronal_activity fill:#4fc3f7,stroke:#333,color:#000
    style tau_propagation fill:#4fc3f7,stroke:#333,color:#000
    style CDK5 fill:#4fc3f7,stroke:#333,color:#000
    style tau_packaging_into_exosom fill:#4fc3f7,stroke:#333,color:#000
    style NLRP3_inflammasome_activa fill:#4fc3f7,stroke:#333,color:#000
    style IL_1__release fill:#4fc3f7,stroke:#333,color:#000

⚖️ Evidence

⚖️ Evidence Matrix3 supports3 contradicts
Supports
Extrasynaptic NMDAR overactivation triggers synaptotoxicity in AD models
PMID:20371869
Supports
Ifenprodil (GluN2B antagonist) prevents Aβ-induced dendritic spine loss
PMID:15229342
Supports
Memantine preferentially blocks extrasynaptic receptors
PMID:17928558
Contradicts
Memantine (current AD therapeutic) shows only modest clinical benefit
PMID:clinical_trial_data
Contradicts
Ifenprodil also binds sigma-1 receptors - neuroprotection may be sigma-1 mediated
PMID:receptor_studies
Contradicts
In vivo synaptic/extrasynaptic compartmentalization technically difficult to confirm
PMID:technical_literature
📖 Linked Papers

No linked papers recorded for this hypothesis yet.

🏥 Translation

🧬 3D Protein Structure — GRIN2A

No curated PDB or AlphaFold mapping for GRIN2A 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.

🔍 Search ClinVar for GRIN2A →

No DepMap CRISPR Chronos data found for GRIN2A.

Run python3 scripts/backfill_hypothesis_depmap.py to populate.

🏆 Tournament

🏆 Arenas / Elo

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📊 Market Indicators

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