ARA-290 10mg Spray (Cibinetide) is a research-grade synthetic 11-amino-acid peptide derived from erythropoietin (EPO), formulated in a pre-metered liquid vehicle for non-invasive laboratory research. Functioning as a highly selective agonist of the Innate Repair Receptor (IRR), ARA-290 (sequence: pyroGlu-Glu-Gln-Leu-Glu-Arg-Ala-Leu-Asn-Ser-Ser-OH) is studied for its potent anti-inflammatory, cytoprotective, and neuro-regenerative effects. Formulated as a stabilized solution, each bottle contains 10mg total active peptide, analytically verified by HPLC to support reproducible scientific investigations.
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ARA-290 10mg Spray is a synthetic 11-amino-acid erythropoietin-derived peptide solution designed to evaluate non-invasive mucosal transport kinetics and selective Innate Repair Receptor (IRR) signaling. By binding selectively to the heterocomplex IRR (composed of EPOR and beta-common receptor CD131 subunits) under cellular stress, ARA-290 triggers tissue-protective cascades and suppresses pro-inflammatory cytokines, without binding to the erythropoietin receptor homodimer. Unlike standard cytoprotective powders, this spray format provides a concentration-verified, pre-dissolved liquid format calibrated for precise laboratory assays.
Researchers continue to investigate ARA-290 across major areas of pathology and neurology, including neuropathic pain reduction, diabetic neuropathy, microglial inflammation suppression, and peripheral nerve fiber regeneration. The intranasal spray formulation is of exceptional scientific interest because it allows researchers to study epithelial membrane transport kinetics of small linear peptides and direct olfactory-to-brain CNS peptide uptake pathways, enabling anti-inflammatory ligands to bypass the blood-brain barrier (BBB) and directly target central microglial networks without systemic variables. Formulated with high-purity research-grade materials, ARA-290 10mg Spray is a specialized molecular tool for laboratories examining selective tissue repair under controlled conditions.
ARA-290 10mg Spray is a research-grade synthetic peptide solution developed for laboratory investigations involving neuropharmacology, tissue-repair signaling, and non-invasive delivery methods. Chemically classified as an erythropoietin (EPO) derivative, it comprises 11 amino acid residues with the sequence pyroGlu-Glu-Gln-Leu-Glu-Arg-Ala-Leu-Asn-Ser-Ser-OH, featuring a cyclized glutamic acid (pyroglutamate) at the N-terminus. As an investigational compound, ARA-290 is studied for its ability to bind selectively to the Innate Repair Receptor (IRR), modulating tissue-protective cascades.
From a molecular research perspective, ARA-290 Spray provides a valuable model for investigating the transport kinetics of small linear peptides across epithelial cell layers. Standard neuropathic pain studies frequently depend on parenteral routes; however, liquid spray preparations enable researchers to evaluate how small, structured peptides cross mucosal membranes, interact with tight junctions, and engage localized tissue-protective receptors. This spray format is particularly suited for research involving nasal mucosal cell lines.
Current laboratory investigations examine ARA-290's selective interaction with the Innate Repair Receptor (IRR), a heterocomplex composed of one erythropoietin receptor (EPOR) monomer and the beta-common receptor (CD131 / beta-cR) subunit. IRR is expressed in tissues undergoing injury, cellular stress, or inflammation. Activation of IRR triggers tissue-protective, anti-apoptotic, and anti-inflammatory signaling cascades. Crucially, because ARA-290 does not bind to the EPOR homodimer, it does not stimulate erythropoiesis, avoiding the thrombotic risks associated with full-length EPO.
Beyond preventing apoptosis, researchers use ARA-290 to explore the regulation of inflammatory cytokines and microglial activity. Studies evaluate how IRR activation suppresses the production of pro-inflammatory factors (TNF-alpha, IL-1beta, IL-6), while upregulating protective local factors. This pathway is studied to analyze receptor sensitivity, cellular signaling thresholds, and peripheral nerve axonal regeneration kinetics under chronic inflammatory stress.
In neurobiology and peripheral neuropathy research, the intranasal spray format provides an optimized experimental model for studying direct blood-brain barrier (BBB) bypass. Researchers evaluate whether mucosal delivery via olfactory or trigeminal nerve pathways facilitates direct transport of anti-inflammatory peptides to hypothalamic-pituitary structures or cranial nerve pathways. This allows the study of central glial cell regulation and neuroprotective signaling without systemic variables.
Each bottle of ARA-290 10mg Spray is manufactured using solid-phase peptide synthesis (SPPS), followed by N-terminal pyroglutamate formation, purification, and solution formulation steps. The resulting active peptide is dissolved in a stabilized, buffered aqueous solution calibrated to ensure exact concentration per metered spray activation. Quality control protocols include reverse-phase HPLC for purity verification and LC-MS for molecular identity confirmation.
To preserve the stability of the peptide in solution, ARA-290 Spray should be stored under refrigeration (2°C to 8°C) and protected from light. Because small linear peptides can undergo slow hydrolysis or peptide cleavage in aqueous environments over time, maintaining refrigerated storage and minimizing atmospheric exposure is critical to preserving peptide integrity. Proper handling supports consistent concentration and analytical reproducibility across laboratory protocols.
Scientific interest in ARA-290 continues to expand as researchers seek to characterize its stability, IRR receptor interactions, and transport kinetics. Nevertheless, many aspects of its cellular signaling and epithelial transport remain active areas of scientific inquiry. Ongoing studies continue to refine the understanding of selective tissue-protective peptides in biological systems. For this reason, ARA-290 10mg Spray should be regarded as an investigational compound whose primary value lies in advancing scientific knowledge of neurobiology receptor biology.
ARA-290 10mg Spray is supplied exclusively for laboratory research and analytical applications. It is intended for Research Use Only (RUO) and is not approved for human consumption, therapeutic use, veterinary use, or diagnostic purposes.
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