ARA-290

ARA-290, with the molecular formula C28H38N6O8 and a molecular weight of 590.64 g/mol, is a small peptide comprising eleven amino acids. This peptide sequence, corresponding to the helix B region of erythropoietin, has been synthesized to investigate the non-hematopoietic properties of EPO. Research suggests that ARA-290 interacts with the innate repair receptor (IRR), a heteromeric complex composed of the EPO receptor and the beta common receptor (CD131). Historically, erythropoietin has been recognized primarily for its role in erythropoiesis. However, subsequent research identified non-hematopoietic functions, including tissue protection and anti-inflammatory effects. ARA-290 was developed to isolate these protective properties from the erythropoietic activity, thereby enabling focused study of its mechanistic actions without confounding effects on red blood cell production. Its development facilitates research into specific signaling pathways activated by the IRR. In laboratory settings, ARA-290 is utilized to explore cellular responses to injury and inflammation. Studies have investigated its influence on cytokine production, apoptosis, and cellular viability in various in vitro and in vivo models. The peptide's interaction with the IRR is a central focus of research, aiming to elucidate the downstream signaling cascades involved in its observed effects on cellular protection and modulation of inflammatory processes.