KCa3.1 subtype-selective Ca2+-activated K+ channel activator with in vivo arterial blood pressure-lowering efficacy. More potent and selective than SKA-31.
SKA-121 is a KCa3.1 (IKCa1, IK1, KCa4, SKCa4, SK4) subtype-selective small conductance Ca2+-activated K+ channel (SK channel) positive-gating modulator (EC50 = 109 nM/KCa3.1 vs. 8.7 μM/KCa2.1, 6.8 μM/KCa2.2, 4.4 μM/KCa2.3) with 200- to 400-fold selectivity over CaV1.2 as well as representative KVs (KV1.3, KV2.1, KV3.1, and KV11.1) and NaV (NaV1.2, NaV1.4, NaV1.5, and NaV1.7) channels. When applied in vivo, SKA-121 significantly lowers mean arterial blood pressure in wild-type, but not KCa3.1(-/-), normotensive and hypertensive mice (100 mg/kg i.p.). SKA-121 is a more potent and selective KCa3.1 activator than SKA-31 (EC50 = 260 nM/KCa3.1, 2.9 μM/KCa2.1, 1.9 μM/KCa2.2, 2.9 μM/KCa2.3).
Code de la classe de stockage
11 - Combustible Solids
Classe de danger pour l'eau (WGK)
WGK 3
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
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This short review discusses pharmacological modulation of the opening/closing properties (gating) of small- and intermediate-conductance Ca(2+)-activated K(+) channels (KCa2 and KCa3.1) with special focus on mechanisms-of-action, selectivity, binding sites, and therapeutic potentials. Despite KCa channel gating-modulation being a relatively novel
Opening of intermediate-conductance calcium-activated potassium channels (KC a 3.1) produces membrane hyperpolarization in the vascular endothelium. Here, we studied the ability of two new KC a 3.1-selective positive-gating modulators, SKA-111 and SKA-121, to (1) evoke porcine endothelial cell KC a
Small-conductance (KCa2) and intermediate-conductance (KCa3.1) calcium-activated K(+) channels are voltage-independent and share a common calcium/calmodulin-mediated gating mechanism. Existing positive gating modulators like EBIO, NS309, or SKA-31 activate both KCa2 and KCa3.1 channels with similar potency or, as in the case
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Notre équipe de scientifiques dispose d'une expérience dans tous les secteurs de la recherche, notamment en sciences de la vie, science des matériaux, synthèse chimique, chromatographie, analyse et dans de nombreux autres domaines..