In a murine colitis model, KPV — taken up into colonic epithelial cells via the intestinal peptide transporter PepT1 — was associated with lower levels of the key inflammatory signals TNF-α and IL-6, suggesting a targeted, locally acting anti-inflammatory mechanism distinct from broad immunosuppression.
Gastroenterology, 2008 · Dalmasso et al.Transporter identified
PepT1 uptake of KPV confirmed in Caco-2 cells (in vitro)
Colonic delivery
Active transport into colonic epithelial cells demonstrated
Cytokine reduction
TNF-α & IL-6 downregulated in murine colitis model
Local action
Effect distinguished from systemic immunosuppression
Preclinical pathway — murine colitis model & Caco-2 cells; Dalmasso et al., Gastroenterology 2008









