Ara-290 10 mg*10vials Kit
$77.00
Description
🧪 Product Profile: ARA-290 (Cibinetide)
Chemical Name: Pyr-Glu-Gln-Leu-Glu-Arg-Ala-Leu-Asn-Ser-Ser-OH
Synonyms: Cibinetide; EPO-derived peptide; ARA290 acetate
CAS Number: 1208243-50-8
Molecular Formula: C₅₁H₈₄N₁₆O₂₁
Molecular Weight: 1257.31 g/mol
Form: White to off-white lyophilized powder
Purity: ≥98% (HPLC); single impurity ≤2.0%
Presentation: 1g/vial or custom packaging; sealed under nitrogen atmosphere
🔬 Mechanism of Action
ARA-290 is a synthetic peptide derived from erythropoietin (EPO) that selectively activates the EPO/CD131 heteroreceptor complex without stimulating erythropoiesis:
- Receptor Specificity: Binds to the common β-chain (CD131) shared by EPO, IL-3, and GM-CSF receptors, triggering neuroprotective signaling cascades.
- Intracellular Pathways: Activates JAK2/STAT3 and PI3K/Akt pathways to promote:
- Anti-inflammatory cytokine release (IL-10 upregulation)
- Oxidative stress reduction (Nrf2/HO-1 activation)
- Neuronal survival (Bcl-2 expression; caspase-3 inhibition)
- Blood-Brain Barrier Penetration: Low molecular weight (1.26 kDa) enables passive diffusion across the BBB, reaching CNS tissues at therapeutic concentrations.
🧠 Research Applications
Primarily used as a tool compound in preclinical models of neurological disorders:
- Neurodegenerative Diseases: Alzheimer’s (tau phosphorylation inhibition), Parkinson’s (dopaminergic neuron protection), and ALS (motor neuron survival).
- Ischemic Stroke: Reduces infarct volume by 40-50% in rodent MCAO models via anti-apoptotic mechanisms.
- Neuropathic Pain: Modulates spinal microglia activation (reduced TNF-α/IL-1β levels) in CCI and SNI models.
- Traumatic Brain Injury: Improves functional recovery by enhancing synaptic plasticity (BDNF upregulation).
📊 Physical & Chemical Properties
| Property | Specification |
|---|---|
| Density | 1.56±0.1 g/cm³ (predicted) |
| pKa | 2.90±0.10 (carboxylic acid group) |
| Solubility | Soluble in DMSO (50 mg/mL); slightly soluble in water |
| Stability | Stable for 24 months at -20°C under argon; avoid repeated freeze-thaw cycles |
| Amino Acid Sequence | Pyr-Glu-Gln-Leu-Glu-Arg-Ala-Leu-Asn-Ser-Ser |
⚙️ Handling & Storage
- Reconstitution: Dissolve in sterile DMSO or 0.1% TFA aqueous solution to prepare stock solutions (1-10 mM).
- Storage Conditions: Store unopened vials at -20°C to -80°C; after reconstitution, aliquot and store at -80°C for up to 3 months.
- Safety Notes: For research use only (RUO); wear PPE (gloves, goggles) during handling; avoid inhalation or skin contact.
📌 Key Supplier Specifications
- Impurity Profile: Acetate content 5.0-12.0%; moisture ≤10.0% (Karl Fischer).
- Endotoxin Level: ≤50 EU/mg (LAL assay).
- Peptide Content: ≥80.0% (by amino acid analysis).
[WPSM_AC id=3213]





