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Alpha-Synuclein ESCRT-III Inhibition Mechanism

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wiki page Created: 2026-04-02T07:19:56 By: crosslink-migration Quality: 50% ✓ SciDEX ID: wiki-mechanisms-alpha-synuclein-escrt-ii
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mechanism3574 wordssynced 2026-04-02

dateUpdated: "2026-04-01T10:45:00.000Z"
lastReviewed: "2026-04-01T10:45:00.000Z"

Alpha-Synuclein ESCRT-III Inhibition Mechanism

Overview

Alpha-synuclein (αSyn) aggregates inhibit the ESCRT-III (Endosomal Sorting Complex Required for Transport-III) machinery through sequestration and collateral degradation, disrupting autophagic-lysosomal pathway function. This mechanism represents a critical link between protein aggregation and cellular clearance failure in Parkinson's disease (PD) and related synucleinopathies.

Mechanistic Model

```mermaid
flowchart TD
subgraph Triggers["🟦 Triggers"]
A["alphaSyn Missense Mutations (A53T, A30P)"] --> D
B["alphaSyn Overexpression"] --> D
C["Post-translational Modifications"] --> D
end

subgraph Mechanisms["🟨 Mechanisms"]
D["alphaSyn Aggregation"] --> E
E["Oligomer Formation"] --> F
F["Protofibril/Fibril Formation"] --> G
G["ESCRT-III Sequestration"] --> H
H["HGS/Tsg101 Recruitment Blocked"] --> I
end

subgraph Outcomes["[!] Outcomes"]
I["Autophagosome-Lysosome Fusion Failure"] --> J
J["Impaired Cargo Delivery"] --> K
K["Lysosomal Dysfunction"] --> L
L["Neuronal Death"] --> M
end

subgraph Therapeutic["🟩 Therapeutic Targets"]
D -.-> T1["alphaSyn Aggregation Inhibitors"]
G -.-> T2["ESCRT-III Modulators"]
L -.-> T3["Autophagy Enhancers"]
end

...
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Related Entities
mechanisms-alpha-synuclein-escrt-iii-inhibition
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slugmechanisms-alpha-synuclein-escrt-iii-inhibition
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entity_typemechanism
origin_typev1_polymorphic_backfill
source_tablewiki_pages
wiki_page_idwp-5eeb644a9bc0
__merged_from{'merged_at': '2026-05-13', 'unprefixed_id': 'mechanisms-alpha-synuclein-escrt-iii-inhibition'}
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📊 Evidence Profile Foundational
Evidence Balance
+0%
Certainty
100%
Debates
0
Incoming
56
Outgoing
96
0 supporting 0 contradicting 0 neutral
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