ID: h-fe1dfe730e
Hypothesis
Mitophagy collapse via PINK1-PRKN is the primary autophagy lesion after irradiation
Persistent damaged mitochondria sustain senescence and inflammatory signaling because selective mitochondrial clearance fails.
EvidencePending (0%)📖 5 cit🗣 1 debates✓ 5 support✗ 1 oppose
✓ All Quality Gates Passed
🧪 Overview
Persistent damaged mitochondria sustain senescence and inflammatory signaling because selective mitochondrial clearance fails.
🧬 Mechanism
🧬 Curated Mechanism Pathway
Curated pathway from expert analysis
flowchart TD
A["Mitochondrial Membrane Potential Loss<br/>Damaged Organelle Signal"]
B["PINK1 Kinase Stabilization<br/>Outer Membrane Accumulation"]
C["Parkin / PRKN Recruitment<br/>E3 Ubiquitin Ligase Activation"]
D["Ubiquitin-Tagged Outer Membrane<br/>p62 / NDP52 / OPTN Adapters"]
E["Autophagosome Engulfment<br/>LC3-II Conjugation"]
F["Lysosomal Degradation<br/>Mitochondrial Clearance"]
G["PINK1 Loss-of-Function<br/>Mitophagy Collapse"]
A --> B
B --> C
C --> D
D --> E
E --> F
G -.->|"blocks"| B
style A fill:#7b1fa2,stroke:#ce93d8,color:#ce93d8
style F fill:#1b5e20,stroke:#81c784,color:#81c784
style G fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a⚖️ Evidence
⚖️ Evidence Matrix5 supports1 contradicts
Supports
PINK1-PRKN mediated mitophagy: differences between in vitro and in vivo models.
Supports
The roles of PINK1, parkin, and mitochondrial fidelity in Parkinson's disease.
Supports
Mt-Keima detects PINK1-PRKN mitophagy in vivo with greater sensitivity than mito-mCherry reporters.
Supports
PINK1 kinase activity couples mitochondrial stress to mitochondrial dynamics and autophagy.
Contradicts
Mitophagy failure may be secondary to broader lysosomal dysfunction.
📖 Linked Papers
No linked papers recorded for this hypothesis yet.
🏥 Translation
🧬 3D Protein Structure — PINK1
🧠 GTEx v10 Brain ExpressionJSON
Median TPM across 13 brain regions for PINK1 from GTEx v10.
💉 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.
No DepMap CRISPR Chronos data found for PINK1.
Run python3 scripts/backfill_hypothesis_depmap.py to populate.
💰 Estimated Development
Cost
$0
Timeline
—
🏆 Tournament
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📊 Market Indicators
7d Trend
↔
Stable
7d Momentum
▼ 0.7%
Volatility
Low
0.0038
Events (7d)
3
Price History
▼9.2%💾 Resource Usage
LLM Tokens
1,500
$0.0045
Total Cost
$0.0045
🔮 Predictions
🔎 Predictions vs Observations2 predictions · 0 with recorded observations
| Prediction | Predicted | Observed | Status | Conf |
|---|---|---|---|---|
| IF primary mouse embryonic fibroblasts (MEFs) are subjected to 10 Gy gamma-irradiation, THEN PINK1-knockout cells will accumulate ≥50% more mitochondrial ROS (MitoSOX Red+) and ≥40% higher mitochondri | PINK1-KO MEFs show significantly elevated mitochondrial dysfunction markers (ROS accumulation, hyperpolarization) compared to irradiated WT controls, indicating | — no observation — | pending | 0.65 |
| IF 8-week-old C57BL/6 mice receive focal 30 Gy X-ray irradiation to the left cortex AND are treated with AAV9-PINK1 expression vector intracranially 24h prior, THEN AAV-PINK1-treated mice will exhibit | PINK1 overexpression mitigates radiation-induced senescence and neuroinflammation, confirming PINK1-PRKN mitophagy as the rate-limiting lesion. | — no observation — | pending | 0.55 |
🔮 Falsifiable Predictions (2)
pendingconf 65%
IF primary mouse embryonic fibroblasts (MEFs) are subjected to 10 Gy gamma-irradiation, THEN PINK1-knockout cells will accumulate ≥50% more mitochondrial ROS (MitoSOX Red+) and ≥40% higher mitochondrial membrane potential (TMRE mean fluorescence) compared to WT MEFs by 48 hours post-irradiation.
Predicted outcome: PINK1-KO MEFs show significantly elevated mitochondrial dysfunction markers (ROS accumulation, hyperpolarization) compared to irradiated WT controls,
Falsification: No significant difference in mitochondrial ROS or membrane potential between irradiated PINK1-KO and WT MEFs (p>0.05), indicating redundant mitophagy pathways compensate; OR mitochondrial protein aggr
pendingconf 55%
IF 8-week-old C57BL/6 mice receive focal 30 Gy X-ray irradiation to the left cortex AND are treated with AAV9-PINK1 expression vector intracranially 24h prior, THEN AAV-PINK1-treated mice will exhibit ≥60% fewer p16INK4a+ senescent neurons and ≥50% lower cortical IL-6 and CXCL1 protein levels (ELISA
Predicted outcome: PINK1 overexpression mitigates radiation-induced senescence and neuroinflammation, confirming PINK1-PRKN mitophagy as the rate-limiting lesion.
Falsification: AAV-PINK1 overexpression does not reduce neuronal senescence markers or inflammatory cytokines compared to AAV-GFP controls after focal irradiation (difference <20%); OR non-neuronal cells (astrocytes
▸Metadatasource: v1_phase_c_backfill · origin_type: debate_synthesizer
| source | v1_phase_c_backfill |
| origin_type | debate_synthesizer |
| _schema_version | 1 |
📊 Evidence Profile
Evidence Balance
+0%
Certainty
0%
Debates
0
Incoming
0
Outgoing
0
0 supporting
0 contradicting
0 neutral
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