A potent, functionally selective TSH receptor (TSHR) positive allosteric modulator with EC50 of 11.6 uM (β-Arr 1 translocation); does not activate β-Arr 1 translocation to the GLP1R, binds and activates the TSHR and has no agonistic effect on cAMP production nor inhibit TSH-induced cAMP production in DiscoverX1 cells and primary cultures of human thyrocytes; potentiates TSH-induced upregulation of ALPL and OPN mRNA levels, and increases TSH-induced secretion of OPN protein; potentiates the effect of TSH to enhance differentiation of a human preosteoblast in an in vitro model
Reference:
[1]. Neumann S, et al. J Pharmacol Exp Ther. 2018 Jan;364(1):38-45..