ARA-290

Origin & Classification

ARA-290, also known as Cibinetide, is a synthetic peptide consisting of eleven amino acids designed from the B-helix region of erythropoietin (EPO). Unlike native EPO, which is a glycoprotein of 165 amino acids, ARA-290 is a small linear peptide created to selectively activate the innate repair receptor (IRR) composed of erythropoietin receptor and CD131 without engaging the EPO homodimeric receptor responsible for erythropoiesis. The peptide is produced synthetically using solid-phase peptide synthesis and purified to high homogeneity.

Mechanism & Research Context

Research interest in ARA-290 centers on its ability to interact with the IRR and modulate downstream signaling pathways involved in tissue protection. Upon binding, ARA-290 has been shown in preclinical systems to activate JAK2/STAT5, PI3K/AKT, and MAPK pathways, leading to the expression of genes associated with anti-inflammatory responses, cytoprotection, and metabolic regulation. Investigators use ARA-290 to explore mechanisms of injury response across organ systems, including ischemia-reperfusion, neural inflammation, and metabolic stress. The peptide serves as a tool to dissect how IRR signaling intersects with innate immune responses, mitochondrial function, and cytokine networks. Emphasis is placed on understanding signal transduction cascades rather than attributing therapeutic effects.

Composition & Quality

ARA-290 is supplied as a lyophilized white powder or sterile aqueous solution, often formulated without carrier proteins. It is manufactured under GMP-aligned conditions with rigorous purification steps such as reverse-phase HPLC to achieve purity levels >95 %. Each batch undergoes mass spectrometry for identity confirmation, analytical HPLC for purity assessment, and sterility testing to ensure lack of endotoxin or microbial contamination. The peptide’s stability is maintained through lyophilization and storage at low temperatures, and reconstitution guidelines typically specify isotonic buffers for experimental use.

Summary & Unified Disclaimer

This description summarizes the scientific context of the molecule. It is provided for educational and research discussion purposes only. It is not intended to diagnose, treat, cure, or prevent any disease, and no medical or consumption claims are made.