ARA-290 10mg (HPLC-Verified / Batch COA)⁠

ARA-290 Research Reagent | Innate Repair Receptor Agonist

ARA-290 (also identified as Cibinetide or Pyroglutamate helix B surface peptide) is a specialized synthetic 11-amino acid linear peptide derivative modeled directly from the spatial configuration of erythropoietin’s (EPO) helix B domain. In laboratory settings, its primary operational hallmark is high selectivity for the Innate Repair Receptor (IRR)—a heterocomplex consisting of the erythropoietin receptor and the common β-chain (CD131).

Unlike native EPO, ARA-290 completely avoids the erythropoietic pathways, meaning it stimulates cellular survival, vascular integrity, and inflammatory modulation without driving hematocrit or red blood cell alterations. This structural divergence makes it an essential framework for studying localized, signal-mediated cellular recovery isolated from systemic hematological side effects.

Batch-Specific HPLC Analysis & Validation

To protect preclinical study baselines from background chemical fluctuations, our ARA-290 stock undergoes rigorous quality controls:

• HPLC Structural Profiling: Every individual batch is evaluated via High-Performance Liquid Chromatography to verify a certified peptide purity of ≥99.0%.
• Mass Spectrometry Assessment: Confirms correct mass assignment parameters, validating structural integrity across the pyroglutamate sequence.
• Batch-Linked COA: Lot-linked Certificates of Analysis are available upon request to guarantee chemical transparency for precision assay analysis.

Experimental Research Context & Mechanisms

Preclinical investigation into ARA-290 10mg targets several deep cytoprotective and neurological signaling vectors:

• Microglia & Astrocyte Regulation: Mapping out the downregulation of chronic spinal microglia activation (Iba-1 immunoreactivity) to explore the inhibition of central neuroinflammatory pathways.
• Axonal & Small Fiber Regeneration: Tracking mechanisms behind neurite outgrowth and intraepidermal nerve fiber density protection in neuro-injury models.
• Pro-Inflammatory Cytokine Blockade: Monitoring the modulation of Nuclear Factor-kappa B (NF-κB) translation to quantify the subsequent reduction of TNF-α, IL-1β, and IL-6 within cellular media.

Laboratory Storage & Handling Protocols

To ensure structural stabilization of the 11-amino acid linear sequence and protect against premature chemical fragmentation:

• Lyophilized Protection: Store unopened glass vials long-term within a specialized laboratory freezer at -20°C. Maintain strict desiccation requirements and safeguard from UV exposure.
• Reconstitution Calibration: Allow the vacuum-sealed container to adjust fully to surrounding room temperature variables before breaking the seal or injecting solvents. Reconstitute with Sterile Bacteriostatic Water.
• Liquid Phase Management: Post-solvent integration, store working solution between 2°C and 6°C inside a dark refrigeration unit. Avoid violent physical vortexing or mechanical agitation. Conclude all research assay testing within 14 days of fluid mixing.