ID: h-6298061b6e
Hypothesis

circHomer1a Restoration as Neuroprotective Strategy in Synaptic Decline

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.
🧬 circHomer1a, miR-1961, HOMER1🩺 neurodegeneration🎯 Composite 54%💱 $0.53▼1.5%proposed
EvidencePending (0%)📖 7 cit🗣 1 debates 7 support 4 oppose
✓ All Quality Gates Passed
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

🧪 Overview

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. The original description reads: "## Mechanistic Overview circHomer1a Restoration as Neuroprotective Strategy in Synaptic Decline starts from the claim that circHomer1a reduction in AD/FTD impairs miR-1961 sponging, reducing HOMER1 translation essential for NMDA receptor signaling. Despite intriguing correlative data, mechanistic chain requires validation at each step. Tier 5 feasibility with 15+ year timeline. Framed more explicitly, the hypothesis centers circHomer1a, miR-1961, HOMER1 within the broader disease setting of neurodegeneration. The row currently records status `proposed`, origin `debate_synthesizer`, and mechanism category `unspecified`.

...

🧬 Mechanism

🧬 Curated Mechanism Pathway

Curated pathway from expert analysis

flowchart TD
    A["Testosterone/ANDROGEN RECEPTOR Axis<br/>Neuronal Androgen Binding"]
    B["AR Nuclear Translocation<br/>Coactivator Recruitment and Hormonal Ligand"]
    C["TM4SF5 and CD82 Expression<br/>Senescent Cell Surface Marker Induction"]
    D["Senolytic Target Engagement<br/>p53-Dependent Apoptosis in SASP Cells"]
    E["Inflammatory Niche Remodeling<br/>SASP Factor Clearance"]
    F["Neurodegenerative Niche Improvement<br/>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

⚖️ Evidence

⚖️ Evidence Matrix7 supports4 contradicts
Supports
circHomer1a significantly decreased in AD prefrontal cortex
Supports
circHomer1a overexpression improves synaptic plasticity in hippocampal neurons
Supports
ATM loss disrupts the autophagy-lysosomal pathway.
Autophagy2021PMID:32757690medium
Supports
Inhba, Homer1 and Bdnf are major targets of transcriptomic dysregulation by neurodegenerative disease-associated excitotoxic NMDA receptor signaling.
Commun Biol2025PMID:41339520medium
Supports
CircRNAs in Alzheimer's disease: What are the prospects?
Noncoding RNA Res2024PMID:38125754medium
Supports
Early α-synuclein aggregation decreases corticostriatal glutamate drive and synapse density.
Neurobiol Dis2025PMID:40250719medium
Supports
Cerebrospinal fluid HOMER1 and NPTX2 as candidate signatures in early-stage multiple system atrophy-parkinsonism.
J Neurol Sci2026PMID:41780424medium
Contradicts
circRNA function may be artifact of overexpression systems; many reported functions failed replication
Contradicts
HOMER1 itself unchanged—if circHomer1a→HOMER1 mechanism true, protein should also be reduced
Contradicts
AAV9 targeting to cortical neurons in adult mice is inefficient
Contradicts
miR-1961 sponging affinity and capacity not biophysically quantified
📖 Linked Papers

No linked papers recorded for this hypothesis yet.

🏥 Translation

🧬 3D Protein Structure — CIRCHOMER1A

No curated PDB or AlphaFold mapping for CIRCHOMER1A yet. Search RCSB →

🧠 GTEx v10 Brain ExpressionJSON

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)

💉 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 circHomer1a, miR-1961, HOMER1 →

No DepMap CRISPR Chronos data found for circHomer1a, miR-1961, HOMER1.

Run python3 scripts/backfill_hypothesis_depmap.py to populate.

💰 Estimated Development
Cost
$0
Timeline

🏆 Tournament

🏆 Arenas / Elo

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📊 Market Indicators

7d Trend
Stable
7d Momentum
▼ 0.5%
Volatility
Low
0.0065
Events (7d)
3
Price History
▼1.5%

💾 Resource Usage

LLM Tokens
23,070
$0.0692
Total Cost
$0.0692

🔮 Predictions

🔎 Predictions vs Observations2 predictions · 0 with recorded observations
PredictionPredictedObservedStatusConf
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 weeHOMER1 protein increase ≥30 % (Western blot) and corresponding rise in synaptic markers (PSD‑95 density) in CA1 stratum radiatum.— no observation —pending0.60
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 wiPeak fluorescence ratio (GCaMP6f) during NMDA stimulation is ≥25 % higher in miR‑1961‑inhibited neurons; this is accompanied by a 20 % rise in HOMER1 protein.— no observation —pending0.55
🔮 Falsifiable Predictions (2)
pendingconf 60%
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.
Predicted outcome: HOMER1 protein increase ≥30 % (Western blot) and corresponding rise in synaptic markers (PSD‑95 density) in CA1 stratum radiatum.
Falsification: HOMER1 protein levels do not differ significantly from controls (<15 % change) and synaptic marker density remains unchanged.
pendingconf 55%
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.
Predicted 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
Falsification: 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.

📖 References (2)

  1. Effects of sequential exposure to water accommodated fraction of crude oil and chlorpyrifos on molecular and biochemical biomarkers in rainbow trout.
    ["De Anna et al.. Comparative biochemistry and physiology. Toxicology & pharmacology : CBP (2018)
  2. SAMHD1 acts at stalled replication forks to prevent interferon induction.
    ["Coquel et al.. Nature (2018)
Metadatasource: v1_phase_c_backfill · origin_type: debate_synthesizer
sourcev1_phase_c_backfill
origin_typedebate_synthesizer
_schema_version1
📊 Evidence Profile
Evidence Balance
+0%
Certainty
0%
Debates
0
Incoming
0
Outgoing
0
0 supporting 0 contradicting 0 neutral
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