Astrocytic Complement Regulation Hypothesis
🧪 Overview
Reactive astrocytes differentially regulate local complement activity through region-specific expression of complement inhibitors (CD55, CD46). Enhancing astrocytic complement control in cognitive regions while maintaining it in emotional circuits could prevent cognitive decline while preserving anxiety regulation.
Debate provenance: derived from debate `sess_SDA-2026-04-08-gap-pubmed-20260406-062128-34a47c4e` on question: The study reports that complement-mediated synaptic elimination produces both cognitive deficits and anxiety-like behaviors, but doesn't explain how the same hippocampal synaptic loss generates these distinct behavioral phenotypes. This mechanistic gap limits understanding of perioperative neurocogn. Consensus signal: domain_expert, skeptic, synthesizer, theorist discussed the mechanism terms Astrocytic, CD46, CD55, Complement, GFAP, Regulation, astrocyte. Novelty signal: skeptic-discussed-with-qualified-concession.
🧬 Mechanism
Auto-built from this analysis's top knowledge-graph edges.
graph TD
C3a_C5a_inflammatory_sign["C3a/C5a inflammatory signaling"] -->|causes| Anxiety_Like_Behaviors["Anxiety-Like Behaviors"]
C1q_mediated_synaptic_eli["C1q-mediated synaptic elimination"] -->|causes| Cognitive_deficits["Cognitive deficits"]
C3AR1["C3AR1"] -->|associated with| anxiety_phenotype["anxiety phenotype"]
C5AR1["C5AR1"] -->|associated with| anxiety_phenotype_1["anxiety phenotype"]
C1QA["C1QA"] -->|associated with| Cognitive_deficits_2["Cognitive deficits"]
GFAP["GFAP"] -->|associated with| astrocyte_reactivity["astrocyte reactivity"]
Complement_activation["Complement activation"] -->|causes| synaptic_elimination["synaptic elimination"]
C1q["C1q"] -->|causes| synaptic_pruning["synaptic pruning"]
complement_system["complement_system"] -->|associated with| neurodegeneration["neurodegeneration"]
sess_SDA_2026_04_08_gap_p["sess_SDA-2026-04-08-gap-pubmed-20260406-062128-34a47c4e"] -->|causal extracted| processed["processed"]
style C3a_C5a_inflammatory_sign fill:#81c784,stroke:#333,color:#000
style Anxiety_Like_Behaviors fill:#4fc3f7,stroke:#333,color:#000
style C1q_mediated_synaptic_eli fill:#4fc3f7,stroke:#333,color:#000
style Cognitive_deficits fill:#4fc3f7,stroke:#333,color:#000
style C3AR1 fill:#ce93d8,stroke:#333,color:#000
style anxiety_phenotype fill:#4fc3f7,stroke:#333,color:#000
style C5AR1 fill:#ce93d8,stroke:#333,color:#000
style anxiety_phenotype_1 fill:#4fc3f7,stroke:#333,color:#000
style C1QA fill:#ce93d8,stroke:#333,color:#000
style Cognitive_deficits_2 fill:#4fc3f7,stroke:#333,color:#000
style GFAP fill:#ce93d8,stroke:#333,color:#000
style astrocyte_reactivity fill:#4fc3f7,stroke:#333,color:#000
style Complement_activation fill:#81c784,stroke:#333,color:#000
style synaptic_elimination fill:#4fc3f7,stroke:#333,color:#000
style C1q fill:#4fc3f7,stroke:#333,color:#000
style synaptic_pruning fill:#4fc3f7,stroke:#333,color:#000
style complement_system fill:#81c784,stroke:#333,color:#000
style neurodegeneration fill:#ef5350,stroke:#333,color:#000
style sess_SDA_2026_04_08_gap_p fill:#4fc3f7,stroke:#333,color:#000
style processed fill:#4fc3f7,stroke:#333,color:#000⚖️ Evidence
No linked papers recorded for this hypothesis yet.
🏥 Translation
🧬 3D Protein Structure — CD55
No curated PDB or AlphaFold mapping for CD55 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 CD55, CD46, GFAP.
Run python3 scripts/backfill_hypothesis_depmap.py to populate.
🏆 Tournament
🏆 Arenas / Elo
📊 Market Indicators
💾 Resource Usage
▸Metadatasource: v1_phase_c_backfill · origin_type: debate_round_mining
| source | v1_phase_c_backfill |
| origin_type | debate_round_mining |
| _schema_version | 1 |