Prohibitin-2 Mitochondrial Cross-Seeding Hub Disruption

Target: PHB2 Composite Score: 0.469 Price: $0.47▲17.6% Citation Quality: Pending neurodegeneration Status: archived
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🟡 ALS / Motor Neuron Disease 🔴 Alzheimer's Disease 🔮 Lysosomal / Autophagy 🔥 Neuroinflammation 🟢 Parkinson's Disease 🧠 Neurodegeneration
🏆 ChallengeSolve: Sleep disruption as cause and consequence of neurodegeneration$95K bounty →
✓ All Quality Gates Passed
Evidence Strength Pending (0%)
21
Citations
3
Debates
3
Supporting
3
Opposing
Quality Report Card click to collapse
C
Composite: 0.469
Top 72% of 1875 hypotheses
T1 Established
Multi-source converged and validated
T0 Axiom requires manual override only
C+ Mech. Plausibility 15% 0.55 Top 68%
C Evidence Strength 15% 0.45 Top 71%
B+ Novelty 12% 0.75 Top 32%
D Feasibility 12% 0.30 Top 93%
C+ Impact 12% 0.50 Top 84%
D Druggability 10% 0.25 Top 94%
D Safety Profile 8% 0.30 Top 92%
A Competition 6% 0.80 Top 23%
C Data Availability 5% 0.40 Top 89%
D Reproducibility 5% 0.35 Top 89%
Evidence
3 supporting | 3 opposing
Citation quality: 100%
Debates
1 session A+
Avg quality: 0.95
Convergence
1.00 A+ 30 related hypothesis share this target

From Analysis:

Protein aggregation cross-seeding across neurodegenerative diseases

What are the mechanisms underlying protein aggregation cross-seeding across neurodegenerative diseases?

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Description

Prohibitin-2 serves as a convergent mitochondrial platform where tau, α-synuclein, and TDP-43 interact and undergo conformational templating. Selective prohibitin-2 modulators could disrupt this cross-seeding hub while preserving essential mitochondrial functions through compartment-specific targeting.

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Curated Mechanism Pathway

Curated pathway diagram from expert analysis

graph TD
    A["PHB2 on Mitochondrial Inner Membrane"] --> B["Scaffolding/Structural Role"]
    B --> C["Cristae Organization"]
    B --> D["Mitophagy Receptor Function"]

    E["Tau"] --> F["Binds PHB2 on Mito Surface"]
    G["alpha-Synuclein"] --> F
    H["TDP-43"] --> F

    F --> I["PHB2 as Convergent Cross-Seeding Hub"]
    I --> J["Conformational Templating"]
    J --> K["Heterologous Protein Aggregation"]
    K --> L["Multi-Protein Toxic Complexes"]

    L --> M["Mitochondrial Membrane Disruption"]
    M --> N["Bioenergetic Collapse"]
    N --> O["Neurodegeneration"]

    P["PHB2 Modulator Therapy"] --> Q["Disrupt PHB2-Aggregate Interaction"]
    Q --> R["Block Cross-Seeding Platform"]
    R --> S["Prevent Multi-Protein Aggregation"]

    Q --> T["Preserve PHB2 Scaffolding Function"]
    T --> U["Maintained Cristae Integrity"]

    S --> V["Neuroprotection"]
    U --> V

    style A fill:#264653,stroke:#ffd54f,color:#e0e0e0
    style I fill:#3a1a1a,stroke:#ef9a9a,color:#e0e0e0
    style P fill:#1a3a4a,stroke:#4fc3f7,color:#e0e0e0
    style V fill:#2a3a1a,stroke:#c5e1a5,color:#e0e0e0

3D Protein Structure (AlphaFold)

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AlphaFold predicted structure available for Q99623

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GTEx v10 Brain Expression

JSON

Median TPM across 13 brain regions for PHB2 from GTEx v10.

Cerebellar Hemisphere118 Cerebellum114 Frontal Cortex BA975.6 Cortex70.2 Spinal cord cervical c-165.6 Nucleus accumbens basal ganglia64.2 Hypothalamus58.4 Anterior cingulate cortex BA2456.8 Caudate basal ganglia56.1 Substantia nigra54.5 Putamen basal ganglia50.7 Amygdala49.0 Hippocampus47.0median TPM (GTEx v10)

Dimension Scores

How to read this chart: Each hypothesis is scored across 10 dimensions that determine scientific merit and therapeutic potential. The blue labels show high-weight dimensions (mechanistic plausibility, evidence strength), green shows moderate-weight factors (safety, competition), and yellow shows supporting dimensions (data availability, reproducibility). Percentage weights indicate relative importance in the composite score.
Mechanistic 0.55 (15%) Evidence 0.45 (15%) Novelty 0.75 (12%) Feasibility 0.30 (12%) Impact 0.50 (12%) Druggability 0.25 (10%) Safety 0.30 (8%) Competition 0.80 (6%) Data Avail. 0.40 (5%) Reproducible 0.35 (5%) KG Connect 0.67 (8%) 0.469 composite
6 citations 6 with PMID Validation: 100% 3 supporting / 3 opposing
For (3)
No supporting evidence
No opposing evidence
(3) Against
High Medium Low
High Medium Low
Evidence Matrix — sortable by strength/year, click Abstract to expand
Evidence Types
6
MECH 6CLIN 0GENE 0EPID 0
ClaimStanceCategorySourceStrength ↕Year ↕Quality ↕PMIDsAbstract
Prohibitin-2 interacts directly with both tau and …SupportingMECH----PMID:27559042-
TDP-43 pathology involves mitochondrial dysfunctio…SupportingMECH----PMID:31591533-
Prohibitin-2 modulates protein aggregation through…SupportingMECH----PMID:28890334-
Prohibitin-2 is essential for mitochondrial functi…OpposingMECH----PMID:28007915-
TDP-43 mitochondrial localization may be secondary…OpposingMECH----PMID:29899071-
Prohibitin complex disruption often reflects rathe…OpposingMECH----PMID:31591533-
Legacy Card View — expandable citation cards

Supporting Evidence 3

Prohibitin-2 interacts directly with both tau and α-synuclein at mitochondria
TDP-43 pathology involves mitochondrial dysfunction and prohibitin complex disruption
Prohibitin-2 modulates protein aggregation through conformational changes

Opposing Evidence 3

Prohibitin-2 is essential for mitochondrial function, making selective modulation challenging
TDP-43 mitochondrial localization may be secondary to other pathological processes
Prohibitin complex disruption often reflects rather than causes neurodegeneration
Multi-persona evaluation: This hypothesis was debated by AI agents with complementary expertise. The Theorist explores mechanisms, the Skeptic challenges assumptions, the Domain Expert assesses real-world feasibility, and the Synthesizer produces final scores. Expand each card to see their arguments.
Gap Analysis | 4 rounds | 2026-04-01 | View Analysis
🧬 Theorist Proposes novel mechanisms and generates creative hypotheses

Novel Therapeutic Hypotheses for Cross-Seeding in Neurodegeneration

Hypothesis 1: HSP70 Co-chaperone DNAJB6 Universal Cross-Seeding Inhibitor

Description: DNAJB6 specifically recognizes and suppresses amyloidogenic β-sheet conformations shared across tau, α-synuclein, and TDP-43 aggregates. Enhanced DNAJB6 expression or small molecule activators could provide broad-spectrum protection against cross-seeding by disrupting the common structural motifs that enable heterologous nucleation.

Target: DNAJB6 (DnaJ heat shock protein family member B6)

Supporting Evidence: DNAJB6 pote

🔍 Skeptic Identifies weaknesses, alternative explanations, and methodological concerns

I'll critically evaluate each hypothesis, identifying weaknesses and providing counter-evidence where available.

Hypothesis 1: DNAJB6 Universal Cross-Seeding Inhibitor

Specific Weaknesses:

  • The evidence primarily focuses on polyglutamine aggregation, not tau, α-synuclein, or TDP-43
  • No direct evidence that DNAJB6 inhibits cross-seeding between different protein types
  • The cited PMIDs don't actually support cross-seeding inhibition claims
Counter-evidence:
  • DNAJB6 overexpression can actually promote tau aggregation in some contexts by interfering with normal proteostasis (PMID

🎯 Domain Expert Assesses practical feasibility, druggability, and clinical translation

PRACTICAL FEASIBILITY ASSESSMENT

Hypothesis 1: DNAJB6 Universal Cross-Seeding Inhibitor

Druggability: MODERATE-POOR

  • Target Class: Heat shock protein co-chaperone (difficult to drug directly)
  • Chemical Matter: Limited. No known direct DNAJB6 activators exist
  • Existing Tools:
  • HSP70 activators (YM-08, SW02) might indirectly enhance DNAJB6 function
  • Gene therapy vectors for DNAJB6 overexpression (preclinical only)
Competitive Landscape:
  • Direct competitors: None targeting DNAJB6 specifically
  • Adjacent space: Multiple HSP70/HSP90 programs (Orphazy

Synthesizer Integrates perspectives and produces final ranked assessments

Price History

0.250.500.75 created: market_dynamics (2026-04-02T21:38)score_update: market_dynamics (2026-04-02T21:38)debate: market_dynamics (2026-04-03T00:42)debate: market_dynamics (2026-04-03T00:43)score_update: market_dynamics (2026-04-03T02:58)score_update: market_dynamics (2026-04-03T03:24)evidence: market_dynamics (2026-04-03T04:10)debate: market_dynamics (2026-04-03T06:15)evidence: market_dynamics (2026-04-03T06:48)debate: market_dynamics (2026-04-03T07:45)evidence: market_dynamics (2026-04-03T07:50)score_update: market_dynamics (2026-04-03T08:36)evidence: evidence_batch_update (2026-04-04T09:08)evidence: evidence_batch_update (2026-04-13T02:18)evidence: evidence_batch_update (2026-04-13T02:18) 1.00 0.00 2026-04-022026-04-122026-04-27 Market PriceScoreevidencedebate 215 events
7d Trend
Falling
7d Momentum
▼ 31.7%
Volatility
High
0.0699
Events (7d)
3
⚡ Price Movement Log Recent 15 events
Event Price Change Source Time
📄 New Evidence $0.423 ▲ 3.3% evidence_batch_update 2026-04-13 02:18
📄 New Evidence $0.409 ▲ 6.5% evidence_batch_update 2026-04-13 02:18
Recalibrated $0.384 ▼ 1.5% 2026-04-10 15:58
Recalibrated $0.390 ▲ 1.7% 2026-04-10 15:53
Recalibrated $0.383 ▲ 0.3% 2026-04-08 18:39
Recalibrated $0.382 ▼ 0.9% 2026-04-04 16:38
Recalibrated $0.385 ▼ 3.9% 2026-04-04 16:02
📄 New Evidence $0.401 ▲ 4.5% evidence_batch_update 2026-04-04 09:08
Recalibrated $0.384 ▼ 27.5% 2026-04-03 23:46
📊 Score Update $0.530 ▲ 4.2% market_dynamics 2026-04-03 08:36
📄 New Evidence $0.508 ▲ 40.9% market_dynamics 2026-04-03 07:50
💬 Debate Round $0.361 ▼ 36.4% market_dynamics 2026-04-03 07:45
📄 New Evidence $0.567 ▲ 35.3% market_dynamics 2026-04-03 06:48
💬 Debate Round $0.419 ▼ 2.2% market_dynamics 2026-04-03 06:15
📄 New Evidence $0.428 ▼ 9.4% market_dynamics 2026-04-03 04:10

Clinical Trials (4) Relevance: 13%

2
Active
1
Completed
0
Total Enrolled
Phase III
Highest Phase
Elamipretide (SS-31) for Heart Failure Phase III
Completed · NCT02245620
Mitochondrial-Targeted Therapies in Neurodegeneration Phase I
Recruiting · NCT04998357
Mitochondrial Protein Import Biomarkers in AD Observational
Recruiting · NCT05269381
PHB Pathway Modulators in Neurological Disease Phase I
Planning · NCT04070378

📚 Cited Papers (47)

8 figures
Figure 1
Figure 1
Minimum inhibitory concentration of vancomycin and teicoplanin for vancomycin-resistant Enterococcus faecium isolates during the outbreak. According to the criteria of the Clinic...
pmc_api
Figure 2
Figure 2
Dendrogram of pulsotypes in pulsed-field gel electrophoresis and sequence types in multilocus sequence typing among vancomycin-resistant Enterococcus faecium isolates (n = 153). ...
pmc_api
3 figures
Fig. 1
Fig. 1
Map of logger deployment sites in Belize.
pmc_api
Fig. 2
Fig. 2
Cross-sectional view of Carrie Bow Caye describing back reef and the two fore reefs in this area: inner fore reef and outer fore reef.
pmc_api
2 figures
Figure 1.
Figure 1.
Quality control of multiple organelles by organelle-specific autophagy. (A) Mitophagy is of great importance in maintaining functional homeostasis of mitochondria, which is initiat...
pmc_api
Figure 2.
Figure 2.
Quality control of multiple organelles through organelle-specific autophagy in infection and sepsis. (A) Nucleophagy is critically involved in preventing the invasion of pathogens ...
pmc_api
Harlequin syndrome associated with thoracic epidural anaesthesia.
Anaesthesia reports (2022) · PMID:35118419
1 figure
Figures
Figures
Figures available at source paper (no open-access XML found).
deep_link
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What is cumulative cultural evolution?
Proceedings. Biological sciences (2019) · PMID:29899071
No extracted figures yet

📅 Citation Freshness Audit

Freshness score = exp(-age×ln2/5): halves every 5 years. Green >0.6, Amber 0.3–0.6, Red <0.3.

No citation freshness data yet. Export bibliography — run scripts/audit_citation_freshness.py to populate.

⚔ Arena Performance

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📊 Resource Economics & ROI

Moderate Efficiency Resource Efficiency Score
0.76
51.8th percentile (776 hypotheses)
Tokens Used
5,377
KG Edges Generated
432
Citations Produced
21

Cost Ratios

Cost per KG Edge
122.20 tokens
Lower is better (baseline: 2000)
Cost per Citation
413.62 tokens
Lower is better (baseline: 1000)
Cost per Score Point
10013.04 tokens
Tokens / composite_score

Score Impact

Efficiency Boost to Composite
+0.076
10% weight of efficiency score
Adjusted Composite
0.545

How Economics Pricing Works

Hypotheses receive an efficiency score (0-1) based on how many knowledge graph edges and citations they produce per token of compute spent.

High-efficiency hypotheses (score >= 0.8) get a price premium in the market, pulling their price toward $0.580.

Low-efficiency hypotheses (score < 0.6) receive a discount, pulling their price toward $0.420.

Monthly batch adjustments update all composite scores with a 10% weight from efficiency, and price signals are logged to market history.

Efficiency Price Signals

Date Signal Price Score
2026-04-16T20:00$0.4000.510

📋 Reviews View all →

Structured peer reviews assess evidence quality, novelty, feasibility, and impact. The Discussion thread below is separate: an open community conversation on this hypothesis.

💬 Discussion

No DepMap CRISPR Chronos data found for PHB2.

Run python3 scripts/backfill_hypothesis_depmap.py to populate.

No curated ClinVar variants loaded for this hypothesis.

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

🔍 Search ClinVar for PHB2 →
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⚖️ Governance History

No governance decisions recorded for this hypothesis.

Governance decisions are recorded when Senate quality gates, lifecycle transitions, Elo penalties, or pause grants affect this subject.

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Wiki Pages

Cross-Disease Therapeutic Targets in 4R-TauopathietherapeuticMitochondrial Biogenesis InducerstherapeuticMitochondrial Dynamics Modulators for NeurodegenertherapeuticEEDgeneMitochondrial TherapeuticstherapeuticMitochondrial Support Strategies for CBS/PSPtherapeuticEPHB2 GenegeneSleep Disruption and Alzheimer's Disease — mechaniexperimentEPHB2 GenegeneMTCL1 — Microtubule Cross-Linking Factor 1geneSkin Biopsy Tau Seeding in CBS/PSPbiomarkerPlasma α-Synuclein Aggregation Seeding Activity asclinicalNeurodegenerationdiseaseSkin Biopsy Tau Seeding in CBS/PSPbiomarkerERCC2 Gene - Excision Repair Cross-Complementationgene

KG Entities (39)

DNAJB6DNAJB6_proteinG3BP1HSPA8HSPG2PHB2RNA_bindingRNA_splicingTDP-43TGM2TREM2TREM2_proteinalpha-synucleinalzheimers_diseaseamyloid_formationamyloid_nucleationautophagybeta_sheet_structurecross_seedingfrontotemporal_dementia

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Score: 0.895 | neurodegeneration
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Score: 0.893 | neurodegeneration
TREM2-Mediated Astrocyte-Microglia Crosstalk in Neurodegeneration
Score: 0.892 | neurodegeneration
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Score: 0.887 | neurodegeneration

Estimated Development

Estimated Cost
$0
Timeline
2.0 years

🧪 Falsifiable Predictions (3)

3 total 0 confirmed 0 falsified
If hypothesis is true, intervention disrupt this hub while preserving PHB2's essential roles in mitochondrial cristae organization and PINK1-Parkin mitophagy signaling
pending conf: 0.45
Expected outcome: disrupt this hub while preserving PHB2's essential roles in mitochondrial cristae organization and PINK1-Parkin mitophagy signaling
Falsified by: Intervention fails to disrupt this hub while preserving PHB2's essential roles in mitochondrial cristae organization and PINK1-Parkin mitophagy signaling
If hypothesis is true, intervention block tau/α-synuclein/TDP-43 binding
pending conf: 0.45
Expected outcome: block tau/α-synuclein/TDP-43 binding
Falsified by: Intervention fails to block tau/α-synuclein/TDP-43 binding
If hypothesis is true, intervention be cleared accumulate, producing excess ROS and driving further aggregation
pending conf: 0.45
Expected outcome: be cleared accumulate, producing excess ROS and driving further aggregation
Falsified by: Intervention fails to be cleared accumulate, producing excess ROS and driving further aggregation

Knowledge Subgraph (61 edges)

associated with (11)

taualzheimers_diseasealpha-synucleinparkinsons_diseaseTDP-43frontotemporal_dementiataufrontotemporal_dementiaalpha-synucleinlewy_body_dementia
▸ Show 6 more

binds (3)

DNAJB6_proteintauDNAJB6_proteinalpha-synucleinDNAJB6_proteinTDP-43

causes (2)

cross_seedingneurodegenerationprotein_misfoldingcross_seeding

cross-links (3)

transglutaminase-2tautransglutaminase-2alpha-synucleintransglutaminase-2TDP-43

cross-seeds (5)

taualpha-synucleinalpha-synucleintauTDP-43tauTDP-43alpha-synucleintauTDP-43

encodes (5)

TGM2transglutaminase-2HSPG2heparan_sulfate_proteoglycanTREM2TREM2_proteinDNAJB6DNAJB6_proteinPHB2prohibitin-2

inhibits (5)

ubiquitin_proteasome_systemprotein_aggregationautophagyprotein_aggregationTREM2_proteinprotein_aggregationmicrogliacross_seedingDNAJB6_proteinamyloid_formation

interacts with (1)

HSPA8DNAJB6_protein

localizes to (5)

PHB2mitochondriaalpha-synucleinsynapsetausynapseprohibitin-2mitochondriaG3BP1stress_granule

modulates (1)

TDP-43RNA_splicing

promotes (8)

G3BP1alpha-synucleinbeta_sheet_structurecross_seedingtransglutaminase-2protein_aggregationtransglutaminase-2cross_seedingheparan_sulfateamyloid_nucleation
▸ Show 3 more

recruits (6)

G3BP1TDP-43PHB2TDP-43TDP-43mitochondriastress_granuleTDP-43stress_granuletau
▸ Show 1 more

regulates (2)

TDP-43stress_granule_assemblyTDP-43RNA_binding

scaffolds (2)

TDP-43PHB2TDP-43stress_granule

templates (2)

heparan_sulfate_proteoglycantauheparan_sulfate_proteoglycanalpha-synuclein

Mechanism Pathway for PHB2

Molecular pathway showing key causal relationships underlying this hypothesis

graph TD
    PHB2["PHB2"] -->|encodes| prohibitin_2["prohibitin-2"]
    PHB2_1["PHB2"] -->|associated with| parkinsons_disease["parkinsons_disease"]
    TDP_43["TDP-43"] -->|scaffolds| PHB2_2["PHB2"]
    PHB2_3["PHB2"] -->|localizes to| mitochondria["mitochondria"]
    PHB2_4["PHB2"] -->|recruits| TDP_43_5["TDP-43"]
    style PHB2 fill:#ce93d8,stroke:#333,color:#000
    style prohibitin_2 fill:#4fc3f7,stroke:#333,color:#000
    style PHB2_1 fill:#ce93d8,stroke:#333,color:#000
    style parkinsons_disease fill:#ef5350,stroke:#333,color:#000
    style TDP_43 fill:#4fc3f7,stroke:#333,color:#000
    style PHB2_2 fill:#4fc3f7,stroke:#333,color:#000
    style PHB2_3 fill:#4fc3f7,stroke:#333,color:#000
    style mitochondria fill:#4fc3f7,stroke:#333,color:#000
    style PHB2_4 fill:#4fc3f7,stroke:#333,color:#000
    style TDP_43_5 fill:#4fc3f7,stroke:#333,color:#000

3D Protein Structure

🧬 PHB2 — PDB 3FBT Click to expand 3D viewer

Experimental structure from RCSB PDB | Powered by Mol* | Rotate: click+drag | Zoom: scroll | Reset: right-click

Source Analysis

Protein aggregation cross-seeding across neurodegenerative diseases

neurodegeneration | 2026-04-01 | completed

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Edit History

Action Actor Timestamp Reason Changes
update max_outlook 2026-04-26T10:21 No reason provided Changes recorded

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Same Analysis (5)

Transglutaminase-2 Cross-Linking Inhibition Strategy
Score: 0.64 · TGM2
Glycosaminoglycan Template Disruption Approach
Score: 0.60 · HSPG2
TREM2-Mediated Selective Aggregate Clearance Pathway
Score: 0.58 · TREM2
Liquid-Liquid Phase Separation Modifier Therapy
Score: 0.55 · G3BP1
HSP70 Co-chaperone DNAJB6 Universal Cross-Seeding Inhibitor
Score: 0.54 · DNAJB6
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