Protease-Activated Receptor-1 (PAR-1) Agonist, a selective peptide, activates the PAR-1 receptor by mimicking the specific actions of thrombin. It corresponds to the PAR1 tethered ligand, facilitating selective activation of this receptor.

Protease-Activated Receptor-1, PAR-1 Agonist induces activation of protein kinase C isoenzymes alpha and epsilon in human HT-29 colon carcinoma cells expressing PAR1 endogeneously. On the cellular level, Protease-Activated Receptor-1, PAR-1 Agonist and thrombin prompted HT-29 cell migration and matrix adhesion by a PKCepsilon-dependent mechanism as concluded because of the inhibition of PAR1-mediated effects by the PKC inhibitor bisindolylmaleimide I and the PKCepsilon translocation inhibitory peptide EAVSLKPT but not by the PKC inhibitor G? 6976[2].