🧪
hypothesis

ubiquitylation-dependent turnover is the actionable driver in: How do ALS-linked UBQLN2 mutations affect its ubiquitylation-dependent stability and local

Hypothesis

ubiquitylation-dependent turnover is the actionable driver in: How do ALS-linked UBQLN2 mutations affect its ubiquitylation-dependent stability and local

The gap can be tested by treating ubiquitylation-dependent turnover as an upstream driver rather than a passive correlate.
🧬 ubiquitylation-dependent turnover🩺 neurodegeneration🎯 Composite 34%💱 $0.52▼23.4%active
EvidencePending (0%)📖 6 cit🗣 2 debates✓ 6 support✗ 1 oppose
✓ All Quality Gates Passed
🏆 ChallengeValidate ubiquitylation-dependent UBQLN2 turnover as actionable driver in ALS$500 →
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arXiv PreprintNeurIPSNature MethodsPLOS ONE
📖 Export BibTeXinteract with this hypothesis
Composite34%

🧪 Overview

The gap can be tested by treating ubiquitylation-dependent turnover as an upstream driver rather than a passive correlate. If true, perturbing E3 ligase mapping should shift UBQLN2 puncta lifetime before downstream neurodegeneration markers change.

🧬 Mechanism

🧬 Curated Mechanism Pathway

Curated pathway from expert analysis

flowchart TD
    A["ubiquitylation-dependent turnover<br/>Hypothesis Target"]
    B["Pathway Dysregulation<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 Matrix5 supports1 contradicts
Supports
TDP-43 Triggers Mitochondrial DNA Release via mPTP to Activate cGAS/STING in ALS.
Cell2020PMID:33031745medium
Supports
Premature polyadenylation-mediated loss of stathmin-2 is a hallmark of TDP-43-dependent neurodegeneration.
Nat Neurosci2019PMID:30643298medium
Supports
Neurotrophins and neurodegeneration.
Neuropathol Appl Neurobiol2003PMID:12787319medium
Supports
Human endogenous retrovirus-K contributes to motor neuron disease.
Sci Transl Med2015PMID:26424568medium
Supports
Spatiotemporal dynamics of molecular pathology in amyotrophic lateral sclerosis.
Science2019PMID:30948552medium
Contradicts
causal direction requires longitudinal perturbation
skeptic_round
📖 Linked Papers (16)Export BibTeX ↗
TDP-43 Triggers Mitochondrial DNA Release via mPTP to Activate cGAS/STING in ALS.
Cell (2020) · PubMed:33031745 ↗
12 figures
Figure 1
Figure 1
No caption available
Figure S1
Figure S1
Elevated NF-κB and Type I IFN Signaling Because of TDP-43 In Vitro , Related to Figure 1 (A) Doxycycline (Dox inducible wild-type (WT) or ALS mutant (Q331K) T...
Common Driver Mutations in AML: Biological Impact, Clinical Considerations, and Treatment Strategies.
Cells (2024) · PubMed:39195279 ↗
No figures
Targeted therapy for lung cancer: Beyond EGFR and ALK.
Cancer (2023) · PubMed:37073562 ↗
No figures
Truncated FGFR2 is a clinically actionable oncogene in multiple cancers.
Nature (2022) · PubMed:35948633 ↗
No figures
Targeted Therapies for Lung Cancer Patients With Oncogenic Driver Molecular Alterations.
J Clin Oncol (2022) · PubMed:34985916 ↗
No figures
UBQLN proteins in health and disease with a focus on UBQLN2 in ALS/FTD.
FEBS J (2022) · PubMed:34273246 ↗
No figures
UBQLN proteins in health and disease with a focus on UBQLN2 in ALS/FTD.
The FEBS journal (2022) · PubMed:34273246 ↗
No figures
TDP-43 Triggers Mitochondrial DNA Release via mPTP to Activate cGAS/STING in ALS.
Cell (2020) · PubMed:33031745 ↗
No figures
Spatiotemporal dynamics of molecular pathology in amyotrophic lateral sclerosis.
Science (New York, N.Y.) (2019) · PubMed:30948552 ↗
No figures
Spatiotemporal dynamics of molecular pathology in amyotrophic lateral sclerosis.
Science (New York, N.Y.) (2019) · PubMed:30948552 ↗
No figures
Premature polyadenylation-mediated loss of stathmin-2 is a hallmark of TDP-43-dependent neurodegeneration.
Nature neuroscience (2019) · PubMed:30643298 ↗
No figures
Premature polyadenylation-mediated loss of stathmin-2 is a hallmark of TDP-43-dependent neurodegeneration.
Nature neuroscience (2019) · PubMed:30643298 ↗
No figures

🏥 Translation

🧬 3D Protein Structure — UBIQUITYLATION-DEPENDENT

No curated PDB or AlphaFold mapping for UBIQUITYLATION-DEPENDENT 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.

🔍 Search ClinVar for ubiquitylation-dependent turnover →

No DepMap CRISPR Chronos data found for ubiquitylation-dependent turnover.

Run python3 scripts/backfill_hypothesis_depmap.py to populate.

🏆 Tournament

🏆 Arenas / Elo

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💾 Resource Usage

No resource usage or linked notebooks recorded for this hypothesis yet.

🔮 Predictions

🔎 Predictions vs Observations2 predictions · 0 with recorded observations
PredictionPredictedObservedStatusConf
IF ubiquitylation-dependent turnover drives UBQLN2 toxicity, THEN ALS-linked UBQLN2 mutants will show >=2-fold longer puncta lifetime than wild-type UBQLN2 in motor neurons within 14 days.Live-cell imaging shows mutant UBQLN2 puncta half-life >=2.0x wild type in human iPSC motor neurons.— no observation —pending0.66
IF E3 ligase control is upstream, THEN restoring the relevant UBQLN2 ubiquitylation pattern will shorten mutant puncta lifetime by >=40% and reduce TDP-43 mislocalization by >=25% within 21 days.E3 ligase rescue decreases UBQLN2 puncta lifetime >=40% and TDP-43 cytoplasmic mislocalization >=25%.— no observation —pending0.55
🔮 Falsifiable Predictions (2)
pendingconf 66%
IF ubiquitylation-dependent turnover drives UBQLN2 toxicity, THEN ALS-linked UBQLN2 mutants will show >=2-fold longer puncta lifetime than wild-type UBQLN2 in motor neurons within 14 days.
Predicted outcome: Live-cell imaging shows mutant UBQLN2 puncta half-life >=2.0x wild type in human iPSC motor neurons.
Falsification: Mutant/wild-type puncta half-life ratio is <1.2 despite comparable expression.
pendingconf 55%
IF E3 ligase control is upstream, THEN restoring the relevant UBQLN2 ubiquitylation pattern will shorten mutant puncta lifetime by >=40% and reduce TDP-43 mislocalization by >=25% within 21 days.
Predicted outcome: E3 ligase rescue decreases UBQLN2 puncta lifetime >=40% and TDP-43 cytoplasmic mislocalization >=25%.
Falsification: Puncta lifetime changes <15% or TDP-43 localization is unchanged despite restored ubiquitylation.
View on SciDEX ↗