🧪
hypothesis

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

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▼17.2%proposed
🟡 ALS / Motor Neuron Disease🔮 Lysosomal / Autophagy
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 →
☰ Compare⚔️ Duel⚛️ Collide
📄 Export LaTeX
arXiv PreprintNeurIPSNature MethodsPLOS ONE
📖 Export BibTeXinteract with this hypothesis
Composite72%

🧪 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
PMID:20562850
Supports
VCP mutations cause ubiquitin-positive nuclear and cytoplasmic inclusions
PMID:21305278
Supports
VCP regulates autophagosome maturation
PMID:20818175
Supports
p62 body formation is enhanced but clearance impaired
PMID:27466187
Contradicts
VCP has pleiotropic functions beyond autophagy (ERAD, nuclear repair, DNA damage response)
PMID:20180545
Contradicts
VCP knockout is embryonic lethal, limiting therapeutic window
PMID:21784250
📖 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.

No curated ClinVar variants loaded for this hypothesis.

Run scripts/backfill_clinvar_variants.py to fetch P/LP/VUS variants.

🔍 Search ClinVar for VCP →

No DepMap CRISPR Chronos data found for VCP.

Run python3 scripts/backfill_hypothesis_depmap.py to populate.

💰 Estimated Development
Cost
$0
Timeline

🏆 Tournament

🏆 Arenas / Elo

No arena matches recorded yet. Browse Arenas →

📊 Market Indicators

7d Trend
Falling
7d Momentum
▼ 1.4%
Volatility
Low
0.0044
Events (7d)
3
Price History
▼17.2%

💾 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)
    PubMed↗DOI↗
  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)
    PubMed↗DOI↗
  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)
    PubMed↗DOI↗
  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)
    PubMed↗DOI↗
  5. [P(3)Se(7)](3-): a phosphorus-rich square-ring selenophosphate.
    ["Chung et al.. Inorganic chemistry (2010)
    PubMed↗DOI↗
  6. Autophagosome precursor maturation requires homotypic fusion.
    ["Moreau et al.. Cell (2011)
    PubMed↗DOI↗
View on SciDEX ↗