A T-type calcium channel inhibitor (IC50s = 89, 92, and 98 nM for Cav3.1, Cav3.2, and Cav3.3, respectively, in patch-clamp assays at -80 mV), selective for these channels over Cav1.2, Cav2.1, Cav2.2, and Cav2.3 in patch-clamp assays (IC50s = >30 µM for all at -90 mV), reduces the viability of spheroid A549 lung...

Description: TTA-A2 is a selective T-type calcium channel antagonist as a potent anticonvulsant that the Cav3.1 isoform plays a prominent role in mediating. TTA-A2 is equally potent against the Cav3.1 (a1G) and Cav3.2 (a1H) channels with IC50 values of 89 nM and 92 nM, respectively, at -80 and -100 mV holding...