APOE

Understanding Entity Pages

This page aggregates everything SciDEX knows about APOE: its mechanistic relationships (Knowledge Graph edges), hypotheses targeting it, analyses mentioning it, and supporting scientific papers. The interactive graph below shows its immediate neighbors. All content is AI-synthesized from peer-reviewed literature.

Summary

Apolipoprotein E (APOE) is the primary cholesterol carrier in the brain, essential for lipid transport, neuronal repair, and synaptic maintenance. The APOE gene has three common alleles: APOE2, APOE3, and APOE4. APOE4 is the strongest genetic risk factor for late-onset Alzheimer's disease, increasing risk 3-15 fold depending on copy number. APOE4 impairs amyloid-beta clearance, promotes neuroinflammation, disrupts blood-brain barrier integrity, and reduces cerebrovascular function. APOE2 is protective, enhancing amyloid clearance and reducing tau pathology. Therapeutic strategies include APOE4 structure correctors, gene therapy to convert APOE4 to APOE3, and anti-APOE4 antibodies.

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graph TD
    subgraph Pathology["Pathology"]
        APOE["APOE"] -->|"associated with"| NEURODEGENERATION["NEURODEGENERATION"]
        APOE["APOE"] -->|"associated with"| Atherosclerosis_1["Atherosclerosis"]
        APOE["APOE"] -->|"associated with"| Alzheimer_3["Alzheimer"]
        GENES["GENES"] -->|"associated with"| APOE["APOE"]
        APOE4_4["APOE4"] -->|"associated with"| APOE["APOE"]
        ALZHEIMER_S_DISEASE["ALZHEIMER'S DISEASE"] -->|"associated with"| APOE["APOE"]
    end
    subgraph Therapeutic["Therapeutic"]
        APOE["APOE"] -->|"therapeutic target"| Alzheimer["Alzheimer"]
    end
    subgraph Signaling["Signaling"]
        APOE["APOE"] -.->|"inhibits"| Atherosclerosis["Atherosclerosis"]
        APOE["APOE"] -.->|"inhibits"| Als["Als"]
        APOE["APOE"] -.->|"inhibits"| Cholesterol["Cholesterol"]
        APOE["APOE"] -->|"regulates"| Als_2["Als"]
        APOE["APOE"] -.->|"inhibits"| Inflammation["Inflammation"]
        TREM2["TREM2"] -->|"activates"| APOE["APOE"]
        APOE4["APOE4"] -->|"activates"| APOE["APOE"]
        INFLAMMATION["INFLAMMATION"] -.->|"inhibits"| APOE["APOE"]
    end
    style APOE fill:#4a1a6b,stroke:#4fc3f7,stroke-width:3px,color:#e0e0e0,font-weight:bold
    style NEURODEGENERATION fill:#ef5350,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
    style Alzheimer fill:#ef5350,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
    style Atherosclerosis fill:#ef5350,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
    style Als fill:#ef5350,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
    style Cholesterol fill:#1b5e20,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
    style Atherosclerosis_1 fill:#ef5350,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
    style Als_2 fill:#ef5350,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
    style Inflammation fill:#ef5350,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
    style Alzheimer_3 fill:#ef5350,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
    style TREM2 fill:#006494,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
    style GENES fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
    style APOE4 fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
    style APOE4_4 fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
    style INFLAMMATION fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0
    style ALZHEIMER_S_DISEASE fill:#4a1a6b,stroke:#4fc3f7,stroke-width:1px,color:#e0e0e0