What is KPV and how does it work?
KPV is the C-terminal tripeptide (Lys-Pro-Val) of α-melanocyte stimulating hormone. It works by entering cells through the PepT1 di/tripeptide transporter, translocating to the nucleus, and competitively blocking the import of the NF-κB p65 subunit — shutting down the master switch for inflammatory gene expression. Crucially it does this without activating melanocortin receptors, so it carries α-MSH's anti-inflammatory activity in isolation.