体外研究
Capsaicin is an agonist of transient receptor potential vanilloid subtype 1 (TRPV1), which is expressed in nociceptive sensory neurons and a range of secretory epithelia, including salivary glands. Capsaicin activates TRPV1, which modulates the permeability of tight junctions (TJ) by regulating the expression and function of putative intercellular adhesion molecules in an ERK-dependent manner. Capsaicin is found to inhibit the growth and proliferation of FaDu cells in a dose- and time-dependent manner. Cells treated with 50, 100, 200, and 300 µM Capsaicin show an augmented decrease in cell growth as the Capsaicin dose increases. In addition, the percentage of viable cells decreases as the incubation time increases. The observed IC50 value is around 150 µM.
