ID: h-d4e73cf08f
Hypothesis

VCP/p97 ATPase mutations impair extraction of ubiquitinated autophagy substrates, causing proteasome-autophagy flux obstruction

VCP/p97 ATPase mutations impair extraction of ubiquitinated autophagy substrates, causing proteasome-autophagy flux obstruction starts from the claim that modulating VCP within the disease context of neurodegeneration can redirect a dise.
🧬 VCP🩺 neurodegeneration🎯 Composite 72%💱 $0.60▼16.7%proposed
EvidencePending (0%)📖 0 cit🗣 1 debates 4 support 2 oppose
✓ All Quality Gates Passed
Mechanistic 0.70 (15%) Evidence 0.72 (15%) Novelty 0.55 (12%) Feasibility 0.68 (12%) Impact 0.78 (12%) Druggability 0.75 (10%) Safety 0.52 (8%) Competition 0.80 (6%) Data Avail. 0.72 (5%) Reproducible 0.78 (5%) KG Connect 0.30 (8%) 0.720 composite
🏆 ChallengeResolve: VCP/p97 ATPase mutations impair extraction of ubiquitinated autophagy s$250 →

🧪 Overview

Mechanistic Overview


VCP/p97 ATPase mutations impair extraction of ubiquitinated autophagy substrates, causing proteasome-autophagy flux obstruction starts from the claim that modulating VCP within the disease context of neurodegeneration can redirect a disease-relevant process. The original description reads: "## Mechanistic Overview VCP/p97 ATPase mutations impair extraction of ubiquitinated autophagy substrates, causing proteasome-autophagy flux obstruction starts from the claim that modulating VCP within the disease context of neurodegeneration can redirect a disease-relevant process. The original description reads: "## Mechanistic Overview VCP/p97 ATPase mutations impair extraction of ubiquitinated autophagy substrates, causing proteasome-autophagy flux obstruction starts from the claim that VCP extracts ubiquitinated proteins from membranes and aggregates for proteasomal degradation. ALS-causing VCP mutations reduce ATPase activity and disrupt coordination between proteasomal and autophagic clearance pathways, causing ubiquitinated proteins to accumulate in aggresome-like structures that overwhelm remaining autophagy capacity.

...

🧬 Mechanism

🧬 Curated Mechanism Pathway

Curated pathway from expert analysis

flowchart TD
    A["VCP<br/>Hypothesis Target"]
    B["Autophagy<br/>Cited Mechanism"]
    C["Cellular Response<br/>Stress or Clearance Change"]
    D["Neural Circuit Effect<br/>Synapse/Glia Vulnerability"]
    E["ALS<br/>Disease-Relevant Outcome"]
    A --> B
    B --> C
    C --> D
    D --> E
    style A fill:#1a237e,stroke:#4fc3f7,color:#4fc3f7
    style B fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a
    style E fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a

⚖️ Evidence

⚖️ Evidence Matrix4 supports2 contradicts
Supports
VCP mutations cause familial ALS with pathological inclusions
Supports
VCP mutations cause ubiquitin-positive nuclear and cytoplasmic inclusions
Supports
VCP regulates autophagosome maturation
Supports
p62 body formation is enhanced but clearance impaired
Contradicts
VCP has pleiotropic functions beyond autophagy (ERAD, nuclear repair, DNA damage response)
Contradicts
VCP knockout is embryonic lethal, limiting therapeutic window
📖 Linked Papers

No linked papers recorded for this hypothesis yet.

🏥 Translation

🧬 3D Protein Structure — VCP

🧬 PDB 5FTK Click to expand

Experimental structure from RCSB PDB | Powered by Mol*

💉 Clinical Trials

No clinical trials data linked to this hypothesis yet.

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No DepMap CRISPR Chronos data found for VCP.

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💰 Estimated Development
Cost
$0
Timeline

🏆 Tournament

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📊 Market Indicators

7d Trend
Falling
7d Momentum
▼ 1.9%
Volatility
Low
0.0045
Events (7d)
4
Price History
▼16.7%

💾 Resource Usage

LLM Tokens
12,142
$0.0364
Total Cost
$0.0364

🔮 Predictions

🔎 Predictions vs Observations2 predictions · 0 with recorded observations
PredictionPredictedObservedStatusConf
IF autophagy is chemically enhanced (e.g., with rapamycin or trehalose) in VCP-mutant motor neurons, THEN the accumulation of ubiquitinated proteins in aggresome-like structures will be significantly >40% reduction in aggresome-like ubiquitinated protein aggregates per cell, with increased LC3-II/LC3-I ratio and increased autophagosome-lysosome fusion events— no observation —pending0.78
IF VCP ATPase activity is pharmacologically inhibited (e.g., with CB-5083) or genetically knocked down in motor neurons, THEN ubiquitinated protein aggregates will accumulate in aggresome-like structuAccumulation of high-molecular-weight ubiquitinated proteins in detergent-insoluble fractions, formation of aggresome-like structures (>5 μm diameter) containin— no observation —pending0.82
🔮 Falsifiable Predictions (2)
pendingconf —
IF VCP ATPase activity is pharmacologically inhibited (e.g., with CB-5083) or genetically knocked down in motor neurons, THEN ubiquitinated protein aggregates will accumulate in aggresome-like structures that colocalize with p62/sequestosome-1, causing a measurable increase in ubiquitinated protein
Predicted outcome: Accumulation of high-molecular-weight ubiquitinated proteins in detergent-insoluble fractions, formation of aggresome-like structures (>5 μm diameter)
Falsification: If VCP inhibition does not result in accumulation of ubiquitinated proteins in aggresome-like structures, or if protein homeostasis remains largely unaffected despite >80% VCP knockdown, the hypothesi
pendingconf —
IF autophagy is chemically enhanced (e.g., with rapamycin or trehalose) in VCP-mutant motor neurons, THEN the accumulation of ubiquitinated proteins in aggresome-like structures will be significantly reduced, and autophagic flux (measured by LC3-II turnover) will increase proportionally, using VCP-A
Predicted outcome: >40% reduction in aggresome-like ubiquitinated protein aggregates per cell, with increased LC3-II/LC3-I ratio and increased autophagosome-lysosome fus
Falsification: If autophagy enhancement fails to reduce ubiquitinated protein accumulation in VCP-mutant cells despite confirmed autophagic flux increase, or if protein aggregates persist even when autophagy is maxi

📖 References (6)

  1. Poorly differentiated carcinoma of the thyroid: validation of the Turin proposal and analysis of IMP3 expression.
    ["Asioli et al.. Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc (2010)
  2. Removal of L-alanine from the production of L-2-aminobutyric acid by introduction of alanine racemase and D-amino acid oxidase.
    ["Zhu et al.. Applied microbiology and biotechnology (2011)
  3. The Axl receptor tyrosine kinase is an adverse prognostic factor and a therapeutic target in esophageal adenocarcinoma.
    ["Hector et al.. Cancer biology & therapy (2010)
  4. An inactivating mutation in intestinal cell kinase, ICK, impairs hedgehog signalling and causes short rib-polydactyly syndrome.
    ["Paige Taylor et al.. Human molecular genetics (2016)
  5. [P(3)Se(7)](3-): a phosphorus-rich square-ring selenophosphate.
    ["Chung et al.. Inorganic chemistry (2010)
  6. Autophagosome precursor maturation requires homotypic fusion.
    ["Moreau et al.. Cell (2011)
Metadatasource: v1_phase_c_backfill · origin_type: debate_synthesizer
sourcev1_phase_c_backfill
origin_typedebate_synthesizer
_schema_version1
📊 Evidence Profile
Evidence Balance
+0%
Certainty
0%
Debates
0
Incoming
0
Outgoing
0
0 supporting 0 contradicting 0 neutral
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