Platelet adhesion

"Platelet adhesion" is not a single molecule or receptor but rather a biological process that describes the initial step of hemostasis, where platelets bind to exposed subendothelial matrix components at sites of vascular injury. This process is mediated by several specific platelet surface receptors—including glycoprotein Ib–IX–V complex, glycoprotein VI, and integrins such as α2β1—that interact with ligands like von Willebrand factor and collagen[4][3][5]. Platelet adhesion initiates thrombus formation to arrest bleeding and plays roles in wound healing, inflammation, immune defense, and pathological conditions such as arterial thrombosis and cancer metastasis[2][4]. Because "platelet adhesion" refers to a physiological event rather than an individual molecular target or receptor, it is not considered a canonical therapeutic target itself; instead, drugs may target the underlying molecules involved in this process.