Under pathological conditions, mislocalized TDP-43 aggregates sequester SNAP29 and syntaxin-17, preventing formation of the trans-SNARE complex required for autophagosome-lysosome fusion. This creates a secondary autophagy block independent of initiation, explaining the progression from early increased autophagosomes to late-stage aggregate accumulation. Most prevalent pathology but temporal causality most contested.
**Molecular Mechanism and Rationale**
The TAR DNA-binding protein 43 (TDP-43), encoded by the TARDBP gene, serves as a critical RNA-binding protein (RBP) that orchestrates complex post-transcriptional regulatory networks essential for neuronal homeostasis. Under physiological conditions, TDP-43 functions as a master regulator of cryptic exon silencing through its preferential binding to UG-rich and GU-rich sequences located within introns and 3' untranslated regions of target transcripts. The p
Verdict Summary
2/10
dimensions won
Cytosolic TDP-43 aggregation sequesters
8/10
dimensions won
Cryptic Exon Silencing Restoration
Radar Chart — 10 Dimensions
Score Comparison Bars
Mechanistic
0.55
0.75
Evidence
0.65
0.70
Novelty
0.70
0.65
Feasibility
0.55
0.60
Impact
0.62
0.72
Druggability
0.40
0.58
Safety
0.52
0.55
Competition
0.78
0.68
Data
0.68
0.75
Reproducible
0.60
0.62
Score Breakdown
Dimension
Cytosolic TDP-43 aggregation s
Cryptic Exon Silencing Restora
Mechanistic
0.550
0.750
Evidence
0.650
0.700
Novelty
0.700
0.650
Feasibility
0.550
0.600
Impact
0.620
0.720
Druggability
0.400
0.580
Safety
0.520
0.550
Competition
0.780
0.680
Data
0.680
0.750
Reproducible
0.600
0.620
Evidence
Cytosolic TDP-43 aggregation sequesters SNAP29 and syntaxin-
No evidence citations yet
Cryptic Exon Silencing Restoration
No evidence citations yet
Debate Excerpts
Cytosolic TDP-43 aggregation sequesters SNAP29 and
4 rounds · quality: 0.81
Theorist
# Therapeutic Hypotheses: Neuron-Specific Autophagy Defects in ALS
---
## Hypothesis 1: Axonal Transport Defect in Autophagosome Maturation
**Title:** C9orf72 hexanucleotide expansion impairs retro...
Skeptic
# Critical Evaluation of ALS Neuron-Specific Autophagy Hypotheses
---
## Hypothesis 1: Axonal Transport Defect (C9orf72/RAB7/Dynein)
### Weak Links
- **Causal direction ambiguous**: Axonal autophag...