🧪
hypothesis

Parthenolide reduces tonic ADORA2A signaling by lowering inflammatory extracellular adenosine tone

Hypothesis

Parthenolide reduces tonic ADORA2A signaling by lowering inflammatory extracellular adenosine tone

NF-kB suppression in glia decreases ectonucleotidase and cytokine programs that sustain extracellular adenosine, indirectly reducing ADORA2A pathway output in mood circuits.
🧬 ADORA2A🩺 neuropharmacology🎯 Composite 66%💱 $0.55▼14.1%proposed
EvidencePending (0%)📖 6 cit🗣 1 debates 6 support 1 oppose
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Mechanistic 0.74 (15%) Evidence 0.58 (15%) Novelty 0.64 (12%) Feasibility 0.74 (12%) Impact 0.66 (12%) Druggability 0.54 (10%) Safety 0.57 (8%) Competition 0.63 (6%) Data Avail. 0.68 (5%) Reproducible 0.62 (5%) KG Connect 0.50 (8%) 0.659 composite
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🧪 Overview

NF-kB suppression in glia decreases ectonucleotidase and cytokine programs that sustain extracellular adenosine, indirectly reducing ADORA2A pathway output in mood circuits.

🧬 Mechanism

🧬 Curated Mechanism Pathway

Curated pathway from expert analysis

flowchart TD
    A["ADORA2A<br/>Hypothesis Target"]
    B["Pathway Dysregulation<br/>Cited Mechanism"]
    C["Cellular Response<br/>Stress or Clearance Change"]
    D["Neural Circuit Effect<br/>Synapse/Glia Vulnerability"]
    E["AD<br/>Disease-Relevant Outcome"]
    A --> B
    B --> C
    C --> D
    D --> E
    style A fill:#1a237e,stroke:#4fc3f7,color:#4fc3f7
    style B fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a
    style E fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a

⚖️ Evidence

⚖️ Evidence Matrix6 supports1 contradicts
Supports
Inflammatory adenosine tone offers a receptor-linked but indirect route to specificity.
Supports
NF-κB signaling in inflammation and cancer.
MedComm (2020)2021PMID:34977871medium
Supports
Brain Specific RagA Overexpression Triggers Depressive-Like Behaviors in Mice via Activating ADORA2A Signaling Pathway.
Adv Sci (Weinh)2024PMID:39373701medium
Supports
Structural studies of NF-κB signaling.
Cell Res2011PMID:21135870medium
Supports
Inactivation of adenosine receptor 2A suppresses endothelial-to-mesenchymal transition and inhibits subretinal fibrosis in mice.
Sci Transl Med2024PMID:38446902medium
Supports
Regulation of NF-kappaB function.
Biochem Soc Symp2006PMID:16626297medium
Contradicts
Mood benefit might arise from broader anti-inflammatory effects without ADORA2A dependence.
📖 Linked Papers

No linked papers recorded for this hypothesis yet.

🏥 Translation

🧬 3D Protein Structure — ADORA2A

🧬 PDB 4EIY Click to expand

Experimental structure from RCSB PDB | Powered by Mol*

🧠 GTEx v10 Brain ExpressionJSON

Median TPM across 13 brain regions for ADORA2A from GTEx v10.

Nucleus accumbens basal ganglia45.7 Putamen basal ganglia42.1 Caudate basal ganglia41.2 Cerebellum9.7 Cerebellar Hemisphere8.1 Cortex4.7 Frontal Cortex BA93.8 Substantia nigra3.4 Hippocampus3.3 Hypothalamus3.2 Anterior cingulate cortex BA243.0 Amygdala2.7 Spinal cord cervical c-12.5median TPM (GTEx v10)

💉 Clinical Trials

No clinical trials data linked to this hypothesis yet.

No curated ClinVar variants loaded for this hypothesis.

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No DepMap CRISPR Chronos data found for ADORA2A.

Run python3 scripts/backfill_hypothesis_depmap.py to populate.

💰 Estimated Development
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📊 Market Indicators

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💾 Resource Usage

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🔮 Predictions

🔎 Predictions vs Observations2 predictions · 0 with recorded observations
PredictionPredictedObservedStatusConf
IF parthenolide reduces extracellular adenosine tone via glial NF-κB inhibition, THEN parthenolide treatment (2 mg/kg/day, 14 days) will decrease ADORA2A-mediated cAMP accumulation in mPFC synaptoneurAt least 50% reduction in forskolin-stimulated cAMP accumulation in mPFC synaptoneurosomes from parthenolide-treated CMS mice versus vehicle-treated CMS mice, w— no observation —pending0.68
IF parthenolide is administered daily at 2 mg/kg (i.p.) for 14 days to male C57BL/6J mice undergoing chronic mild stress (CMS), THEN extracellular adenosine concentrations in medial prefrontal cortex At least 40% reduction in extracellular adenosine (μM) in mPFC of parthenolide-treated CMS mice relative to vehicle-treated CMS mice, with no significant change— no observation —pending0.72
🔮 Falsifiable Predictions (2)
pendingconf 72%
IF parthenolide is administered daily at 2 mg/kg (i.p.) for 14 days to male C57BL/6J mice undergoing chronic mild stress (CMS), THEN extracellular adenosine concentrations in medial prefrontal cortex (mPFC) microdialysates will decrease by at least 40% compared to vehicle-treated stressed controls,
Predicted outcome: At least 40% reduction in extracellular adenosine (μM) in mPFC of parthenolide-treated CMS mice relative to vehicle-treated CMS mice, with no signific
Falsification: Extracellular adenosine in parthenolide-treated CMS mice is NOT significantly lower than vehicle-treated CMS mice, OR adenosine levels are equally suppressed in non-stressed parthenolide-treated anima
pendingconf 68%
IF parthenolide reduces extracellular adenosine tone via glial NF-κB inhibition, THEN parthenolide treatment (2 mg/kg/day, 14 days) will decrease ADORA2A-mediated cAMP accumulation in mPFC synaptoneurosomes by ≥50% in CMS-exposed mice, while ADORA2A agonist (CGS21680)-stimulated cAMP remains intact
Predicted outcome: At least 50% reduction in forskolin-stimulated cAMP accumulation in mPFC synaptoneurosomes from parthenolide-treated CMS mice versus vehicle-treated C
Falsification: cAMP accumulation in parthenolide-treated CMS mice is NOT significantly different from vehicle controls, OR cAMP is equally reduced in non-stressed parthenolide animals, OR CGS21680 fails to stimulate
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