αvβ5

αvβ5 integrin is a heterodimeric cell-surface adhesion receptor within the αv integrin family that mediates interactions between cells and extracellular matrix components, thereby regulating cell migration, survival, and tissue remodeling processes[1][2]. Mechanistically, integrin-mediated signaling transduces extracellular cues into intracellular responses, and αvβ5 has been linked to focal adhesion kinase (FAK)-dependent pathways that control cellular migration and angiogenic responses[3][4]. In vascular and tumor biology, αvβ5 participates in endothelial cell functions required for angiogenesis, and experimental inhibition of αvβ5 suppresses angiogenic activity in vitro and in vivo models[5][6]. Disease relevance is particularly evident in cancer, where αvβ5 contributes to tumor angiogenesis through crosstalk with vascular endothelial growth factor (VEGF)-associated signaling networks that support tumor growth and progression[2][1]. Compared with the closely related αvβ3 integrin, αvβ5 belongs to the same RGD-binding αv integrin subgroup and shares roles in angiogenesis, yet these isoforms display distinct signaling interactions and biological responses depending on cellular context and ligand engagement[2][1]. For experimental applications, αvβ5 has been extensively evaluated as a therapeutic target, and monoclonal antibodies, peptide antagonists, and other integrin inhibitors have been used to disrupt αvβ5-mediated adhesion and signaling pathways in angiogenesis and cancer models[5][7]. These characteristics make αvβ5 a relevant molecular target for studies investigating integrin signaling, tumor microenvironment regulation, and anti-angiogenic therapeutic strategies[2][7].