circHomer1a Restoration as Neuroprotective Strategy in Synaptic Decline

Target: circHomer1a, miR-1961, HOMER1 Composite Score: 0.540 Price: $0.55▲2.3% Citation Quality: Pending neurodegeneration Status: proposed
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🧠 Neurodegeneration
✓ All Quality Gates Passed
Evidence Strength Pending (0%)
7
Citations
1
Debates
7
Supporting
4
Opposing
Quality Report Card click to collapse
C+
Composite: 0.540
Top 59% of 1875 hypotheses
T4 Speculative
Novel AI-generated, no external validation
Needs 1+ supporting citation to reach Provisional
C Mech. Plausibility 15% 0.44 Top 90%
B Evidence Strength 15% 0.68 Top 24%
A Novelty 12% 0.80 Top 25%
C Feasibility 12% 0.40 Top 84%
C+ Impact 12% 0.55 Top 77%
D Druggability 10% 0.38 Top 86%
C+ Safety Profile 8% 0.55 Top 47%
B+ Competition 6% 0.72 Top 33%
C+ Data Availability 5% 0.52 Top 68%
C Reproducibility 5% 0.45 Top 78%
Evidence
7 supporting | 4 opposing
Citation quality: 0%
Debates
1 session B+
Avg quality: 0.79
Convergence
0.00 F 30 related hypothesis share this target

From Analysis:

Gap 006 analysis (archived stub)

Analysis for knowledge gap 006 in the neurodegeneration domain.

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Description

Mechanistic Overview


circHomer1a Restoration as Neuroprotective Strategy in Synaptic Decline starts from the claim that modulating circHomer1a, miR-1961, HOMER1 within the disease context of neurodegeneration can redirect a disease-relevant process. The original description reads: "## Mechanistic Overview circHomer1a Restoration as Neuroprotective Strategy in Synaptic Decline starts from the claim that modulating circHomer1a, miR-1961, HOMER1 within the disease context of neurodegeneration can redirect a disease-relevant process.

...

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Curated Mechanism Pathway

Curated pathway diagram from expert analysis

flowchart TD
    A["Testosterone/ANDROGEN RECEPTOR Axis
Neuronal Androgen Binding"] B["AR Nuclear Translocation
Coactivator Recruitment and Hormonal Ligand"] C["TM4SF5 and CD82 Expression
Senescent Cell Surface Marker Induction"] D["Senolytic Target Engagement
p53-Dependent Apoptosis in SASP Cells"] E["Inflammatory Niche Remodeling
SASP Factor Clearance"] F["Neurodegenerative Niche Improvement
Reduced Inflammatory Tone"] A --> B B --> C C --> D D --> E E --> F style A fill:#1a237e,stroke:#4fc3f7,color:#4fc3f7 style D fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a style F fill:#1b5e20,stroke:#81c784,color:#81c784

GTEx v10 Brain Expression

JSON

Median TPM across 13 brain regions for circHomer1a, miR-1961, HOMER1 from GTEx v10.

Frontal Cortex BA915.6 Cortex11.8 Cerebellar Hemisphere11.6 Cerebellum10.4 Nucleus accumbens basal ganglia9.9 Anterior cingulate cortex BA249.8 Caudate basal ganglia6.0 Putamen basal ganglia5.1 Amygdala4.5 Hippocampus4.0 Hypothalamus3.2 Spinal cord cervical c-11.7 Substantia nigra1.5median 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 0.44 (15%) Evidence 0.68 (15%) Novelty 0.80 (12%) Feasibility 0.40 (12%) Impact 0.55 (12%) Druggability 0.38 (10%) Safety 0.55 (8%) Competition 0.72 (6%) Data Avail. 0.52 (5%) Reproducible 0.45 (5%) KG Connect 0.50 (8%) 0.540 composite
11 citations 11 with PMID 5 medium Validation: 0% 7 supporting / 4 opposing
For (7)
5
No opposing evidence
(4) Against
High Medium Low
High Medium Low
Evidence Matrix — sortable by strength/year, click Abstract to expand
Evidence Types
10
1
MECH 10CLIN 1GENE 0EPID 0
ClaimStanceCategorySourceStrength ↕Year ↕Quality ↕PMIDsAbstract
ATM loss disrupts the autophagy-lysosomal pathway.SupportingMECHAutophagy MEDIUM2021-PMID:32757690-
Inhba, Homer1 and Bdnf are major targets of transc…SupportingMECHCommun Biol MEDIUM2025-PMID:41339520-
CircRNAs in Alzheimer's disease: What are the…SupportingMECHNoncoding RNA R… MEDIUM2024-PMID:38125754-
Early α-synuclein aggregation decreases corticostr…SupportingMECHNeurobiol Dis MEDIUM2025-PMID:40250719-
Cerebrospinal fluid HOMER1 and NPTX2 as candidate …SupportingCLINJ Neurol Sci MEDIUM2026-PMID:41780424-
circHomer1a significantly decreased in AD prefront…SupportingMECH----PMID:30012402-
circHomer1a overexpression improves synaptic plast…SupportingMECH----PMID:29670289-
circRNA function may be artifact of overexpression…OpposingMECH----PMID:N/A-
HOMER1 itself unchanged—if circHomer1a→HOMER1 mech…OpposingMECH----PMID:N/A-
AAV9 targeting to cortical neurons in adult mice i…OpposingMECH----PMID:N/A-
miR-1961 sponging affinity and capacity not biophy…OpposingMECH----PMID:N/A-
Legacy Card View — expandable citation cards

Supporting Evidence 7

circHomer1a significantly decreased in AD prefrontal cortex
circHomer1a overexpression improves synaptic plasticity in hippocampal neurons
ATM loss disrupts the autophagy-lysosomal pathway. MEDIUM
Autophagy · 2021 · PMID:32757690
Inhba, Homer1 and Bdnf are major targets of transcriptomic dysregulation by neurodegenerative disease-associat… MEDIUM
Inhba, Homer1 and Bdnf are major targets of transcriptomic dysregulation by neurodegenerative disease-associated excitotoxic NMDA receptor signaling.
Commun Biol · 2025 · PMID:41339520
CircRNAs in Alzheimer's disease: What are the prospects? MEDIUM
Noncoding RNA Res · 2024 · PMID:38125754
Early α-synuclein aggregation decreases corticostriatal glutamate drive and synapse density. MEDIUM
Neurobiol Dis · 2025 · PMID:40250719
Cerebrospinal fluid HOMER1 and NPTX2 as candidate signatures in early-stage multiple system atrophy-parkinsoni… MEDIUM
Cerebrospinal fluid HOMER1 and NPTX2 as candidate signatures in early-stage multiple system atrophy-parkinsonism.
J Neurol Sci · 2026 · PMID:41780424

Opposing Evidence 4

circRNA function may be artifact of overexpression systems; many reported functions failed replication
HOMER1 itself unchanged—if circHomer1a→HOMER1 mechanism true, protein should also be reduced
AAV9 targeting to cortical neurons in adult mice is inefficient
miR-1961 sponging affinity and capacity not biophysically quantified
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 | 2026-04-22 | View Analysis
🧬 Theorist Proposes novel mechanisms and generates creative hypotheses

Knowledge Gap 006 Analysis: Therapeutic Hypotheses in Neurodegeneration

Current Gap Assessment


Key unresolved questions include: temporal relationship between protein aggregation and cellular dysfunction, mechanisms of selective neuronal vulnerability, and translational disconnect between preclinical and clinical targets.

Hypothesis 1: Nuclear TDP-43 Depletion Drives Synaptic Splicing Dysregulation in ALS-FTD Spectrum

Mechanism: TDP-43 proteinopathy leads to progressive nuclear depletion of functional TDP-43, causing widespread alternative splicing defects at synapses, part

🔍 Skeptic Identifies weaknesses, alternative explanations, and methodological concerns

Critical Evaluation of Neurodegeneration Hypotheses

Hypothesis 1: Nuclear TDP-43 Depletion Drives Synaptic Splicing Dysregulation

Temporal Causality Assumption
The hypothesis assumes nuclear TDP-43 depletion drives splicing dysfunction rather than being a consequence of earlier upstream insults. This assumes causation from correlation—a foundational logical flaw. Nuclear depletion may be a compensatory response, an epiphenomenon, or a parallel process occurring alongside (not before) other pathogenic events.

Specificity Problem
TDP-43 regulates thousands of sp

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

Feasibility Assessment: Neurodegeneration Therapeutic Hypotheses

Executive Summary

| Hypothesis | Primary Modality | Feasibility Tier | Timeline | Cost Range |
|------------|------------------|------------------|----------|------------|
| 7. cGAS-STING/Tau | STING inhibitors | Tier 1 | 5-8 yr | $100-200M |
| 2. TREM2/DAM | Agonist antibodies | Tier 2 | 6-9 yr | $150-250M |
| 6. Astrocyte/GRN | MCT4 modulators | Tier 2 | 7-10 yr | $150-250M |
| 1. TDP-43/Splicing | ASOs | Tier 3 | 10-12 yr | $150-300M |
| 3. Lysosome/αSyn | TRPML1 agonists | Tier 3

Synthesizer Integrates perspectives and produces final ranked assessments

{
"ranked_hypotheses": [
{
"title": "cGAS-STING Pathway Hyperactivation Mediates Tau Propagation",
"description": "Pathological tau triggers cytosolic DNA release and mitochondrial DNA stress, activating cGAS-STING signaling in neurons and microglia. This creates a feedforward inflammatory loop that accelerates tau pathology spread and impairs neuronal proteostasis. Tier 1 translational feasibility with 5-8 year development timeline.",
"target_gene": "cGAS (CGAS), STING (TMEM173)",
"dimension_scores": {
"evidence_strength": 0.76,
"novelty": 0.70,

Price History

0.530.550.56 0.57 0.52 2026-04-222026-04-262026-04-27 Market PriceScoreevidencedebate 7 events
7d Trend
Stable
7d Momentum
▲ 2.3%
Volatility
Low
0.0109
Events (7d)
7

Clinical Trials (0)

No clinical trials data available

📚 Cited Papers (8)

No extracted figures yet
No extracted figures yet
ATM loss disrupts the autophagy-lysosomal pathway.
Autophagy (2021) · PMID:32757690
No extracted figures yet
No extracted figures yet
No extracted figures yet
No extracted figures yet
No extracted figures yet
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.

📙 Related Wiki Pages (0)

No wiki pages linked to this hypothesis yet.

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📓 Linked Notebooks (0)

No notebooks linked to this analysis yet. Notebooks are generated when Forge tools run analyses.

⚔ Arena Performance

No arena matches recorded yet. Browse Arenas
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📊 Resource Economics & ROI

Moderate Efficiency Resource Efficiency Score
0.50
32.3th percentile (776 hypotheses)
Tokens Used
0
KG Edges Generated
0
Citations Produced
7

Cost Ratios

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

Score Impact

Efficiency Boost to Composite
+0.050
10% weight of efficiency score
Adjusted Composite
0.590

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.

📋 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 circHomer1a, miR-1961, HOMER1.

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 circHomer1a, miR-1961, HOMER1 →
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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.

Browse all governance decisions →

KG Entities (56)

AD and Pick's diseaseALSAlzheimer's diseaseAstrocyte lactate productionCytosolic mtDNACytosolic mtDNA accumulationDAM transitionFTDMCT4Metabolic coupling failureNuclear TDP-43 depletionPathological tauProgranulinProgranulin haploinsufficiencyReduced MCT4 expressionReduced lactate productionReduced neuronal glucose uptakeSDA-2026-04-02-gap-2026-04-01-gap-006STINGSTING inhibition

Related Hypotheses

Gut Microbiome Remodeling to Prevent Systemic NLRP3 Priming in Neurodegeneration
Score: 0.907 | neurodegeneration
Hypothesis 4: Metabolic Coupling via Lactate-Shuttling Collapse
Score: 0.895 | neurodegeneration
SIRT1-Mediated Reversal of TREM2-Dependent Microglial Senescence
Score: 0.893 | neurodegeneration
TREM2-Mediated Astrocyte-Microglia Crosstalk in Neurodegeneration
Score: 0.892 | neurodegeneration
Optimized Temporal Window for Metabolic Boosting Therapy Determines Success of Microglial State Transition Restoration
Score: 0.887 | neurodegeneration

Estimated Development

Estimated Cost
$0
Timeline
0 months

🧪 Falsifiable Predictions (2)

2 total 0 confirmed 0 falsified
IF we deliver AAV‑mediated circHomer1a overexpression to the hippocampus of 6‑month‑old APP/PS1 mice (AD model) THEN HOMER1 protein levels will rise by ≥30 % relative to GFP‑ AAV controls within 4 weeks after viral injection.
pending conf: 0.60
Expected outcome: HOMER1 protein increase ≥30 % (Western blot) and corresponding rise in synaptic markers (PSD‑95 density) in CA1 stratum radiatum.
Falsified by: HOMER1 protein levels do not differ significantly from controls (<15 % change) and synaptic marker density remains unchanged.
Method: Randomized AAV‑circHomer1a vs AAV‑GFP injection in APP/PS1 mice; harvest hippocampus at 4 weeks post‑injection; Western blot for HOMER1 and immunohistochemistry for PSD‑95; blinded quantification.
IF we treat iPSC‑derived cortical neurons from Alzheimer’s disease patients with a LNA antisense oligonucleotide that antagonizes miR‑1961 (thus freeing circHomer1a) THEN NMDA‑evoked calcium influx will increase by ≥25 % compared with a scrambled‑oligo control within 14 days of transfection.
pending conf: 0.55
Expected outcome: Peak fluorescence ratio (GCaMP6f) during NMDA stimulation is ≥25 % higher in miR‑1961‑inhibited neurons; this is accompanied by a 20 % rise in HOMER1 protein.
Falsified by: Calcium influx in miR‑1961‑inhibited neurons is unchanged (<10 % difference) relative to scrambled oligo, indicating that freeing circHomer1a does not affect NMDA‑mediated signaling.
Method: Human iPSC lines from AD patients differentiated to cortical neurons; transfection with LNA‑anti‑miR‑1961 or scramble (n≥3 lines per condition); calcium imaging using GCaMP6f at day 14 post‑transfection; parallel Western blot for HOMER1.

Knowledge Subgraph (39 edges)

accelerates (1)

cGAS-STINGtau pathology spread

activates (3)

cGAS-STINGneuroinflammationPathological taucGAS-STING signalingTREM2 agonist antibodiesamyloid uptake by microglia

associated with (3)

TDP-43 aggregatesALSTDP-43 aggregatesFTDType I interferon responseneurodegeneration

causal extracted (1)

sess_SDA-2026-04-02-gap-2026-04-01-gap-006_task_9aae8fc5processed

causes (9)

Progranulin haploinsufficiencyFTDReduced neuronal glucose uptakeneuronal metabolic stress vulnerabilityTDP-43 proteinopathynuclear TDP-43 depletionNuclear TDP-43 depletionsynaptic splicing dysregulationcGAS-STING signalingneuroinflammation
▸ Show 4 more

correlates with (1)

Type I interferon responseAD and Pick's disease

impairs (3)

TREM2 loss-of-functionDAM transitionProgranulin haploinsufficiencyastrocyte lactate productioncGAS-STINGneuronal proteostasis

increases (1)

Trem2 knockoutamyloid seeding

inhibits (3)

TREM2 deficiencyamyloid plaque phagocytosisProgranulin haploinsufficiencyastrocyte lactate productioncGAS-STING pathwayneuronal proteostasis

modulates (1)

STINGtau pathology spread

prevents (2)

TREM2 deficiencyamyloid plaque phagocytosisSTING inhibitionneuroinflammation

produced (1)

sess_SDA-2026-04-02-gap-2026-04-01-gap-006_task_9aae8fc5SDA-2026-04-02-gap-2026-04-01-gap-006

promotes (1)

TREM2-agonist antibodiesmicroglial amyloid uptake

protects against (1)

STING inhibitionbehavioral deficits

reduces (2)

Reduced MCT4 expressionastrocyte lactate productionReduced lactate productionneuronal glucose uptake

regulates (4)

cGAScGAS-STING signaling pathwayTREM2microglial DAM state transitionMCT4lactate transportProgranulinastrocyte function

therapeutic target for (1)

TREM2Alzheimer's disease

triggers (1)

Cytosolic mtDNAcGAS-STING signaling

Mechanism Pathway for circHomer1a, miR-1961, HOMER1

Molecular pathway showing key causal relationships underlying this hypothesis

graph TD
    sess_SDA_2026_04_02_gap_2["sess_SDA-2026-04-02-gap-2026-04-01-gap-006_task_9aae8fc5"] -->|produced| SDA_2026_04_02_gap_2026_0["SDA-2026-04-02-gap-2026-04-01-gap-006"]
    Reduced_MCT4_expression["Reduced MCT4 expression"] -.->|reduces| astrocyte_lactate_product["astrocyte lactate production"]
    Reduced_lactate_productio["Reduced lactate production"] -.->|reduces| neuronal_glucose_uptake["neuronal glucose uptake"]
    Type_I_interferon_respons["Type I interferon response"] -->|correlates with| AD_and_Pick_s_disease["AD and Pick's disease"]
    TREM2_loss_of_function["TREM2 loss-of-function"] -->|impairs| DAM_transition["DAM transition"]
    TREM2_deficiency["TREM2 deficiency"] -->|prevents| amyloid_plaque_phagocytos["amyloid plaque phagocytosis"]
    Trem2_knockout["Trem2 knockout"] -->|increases| amyloid_seeding["amyloid seeding"]
    TREM2_agonist_antibodies["TREM2-agonist antibodies"] -->|promotes| microglial_amyloid_uptake["microglial amyloid uptake"]
    Progranulin_haploinsuffic["Progranulin haploinsufficiency"] -->|impairs| astrocyte_lactate_product_1["astrocyte lactate production"]
    Progranulin_haploinsuffic_2["Progranulin haploinsufficiency"] -->|causes| FTD["FTD"]
    cGAS_STING["cGAS-STING"] -->|activates| neuroinflammation["neuroinflammation"]
    cGAS_STING_3["cGAS-STING"] -->|impairs| neuronal_proteostasis["neuronal proteostasis"]
    style sess_SDA_2026_04_02_gap_2 fill:#4fc3f7,stroke:#333,color:#000
    style SDA_2026_04_02_gap_2026_0 fill:#4fc3f7,stroke:#333,color:#000
    style Reduced_MCT4_expression fill:#4fc3f7,stroke:#333,color:#000
    style astrocyte_lactate_product fill:#4fc3f7,stroke:#333,color:#000
    style Reduced_lactate_productio fill:#4fc3f7,stroke:#333,color:#000
    style neuronal_glucose_uptake fill:#4fc3f7,stroke:#333,color:#000
    style Type_I_interferon_respons fill:#81c784,stroke:#333,color:#000
    style AD_and_Pick_s_disease fill:#ef5350,stroke:#333,color:#000
    style TREM2_loss_of_function fill:#ce93d8,stroke:#333,color:#000
    style DAM_transition fill:#4fc3f7,stroke:#333,color:#000
    style TREM2_deficiency fill:#ce93d8,stroke:#333,color:#000
    style amyloid_plaque_phagocytos fill:#4fc3f7,stroke:#333,color:#000
    style Trem2_knockout fill:#ce93d8,stroke:#333,color:#000
    style amyloid_seeding fill:#4fc3f7,stroke:#333,color:#000
    style TREM2_agonist_antibodies fill:#4fc3f7,stroke:#333,color:#000
    style microglial_amyloid_uptake fill:#4fc3f7,stroke:#333,color:#000
    style Progranulin_haploinsuffic fill:#ce93d8,stroke:#333,color:#000
    style astrocyte_lactate_product_1 fill:#4fc3f7,stroke:#333,color:#000
    style Progranulin_haploinsuffic_2 fill:#ce93d8,stroke:#333,color:#000
    style FTD fill:#ef5350,stroke:#333,color:#000
    style cGAS_STING fill:#81c784,stroke:#333,color:#000
    style neuroinflammation fill:#4fc3f7,stroke:#333,color:#000
    style cGAS_STING_3 fill:#81c784,stroke:#333,color:#000
    style neuronal_proteostasis fill:#4fc3f7,stroke:#333,color:#000

3D Protein Structure

🧬 CIRCHOMER1A — Search for structure Click to search RCSB PDB
🔍 Searching RCSB PDB for CIRCHOMER1A structures...
Querying Protein Data Bank API

Source Analysis

Gap 006 analysis (archived stub)

neurodegeneration | 2026-04-02 | archived

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Same Analysis (5)

cGAS-STING Pathway Hyperactivation Mediates Tau Propagation
Score: 0.76 · cGAS (CGAS), STING (TMEM173)
TREM2-Dependent Microglial State Transition as Therapeutic Window in A
Score: 0.69 · TREM2, SYK signaling pathway
Astrocyte-Neuron Metabolic Coupling Failure Precedes Neurodegeneration
Score: 0.69 · GRN, SLC16A3 (MCT4)
Autophagosome-Lysosome Fusion Defects as Primary Driver of α-Synuclein
Score: 0.63 · VPS41, STX17, HOPS complex, TRPML1 (MCOLN1)
Nuclear TDP-43 Depletion Drives Synaptic Splicing Dysregulation in ALS
Score: 0.62 · TARDBP, splicing targets (Sortilin1, Synaptojanin1)
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