chemical

SKA-121

S-245

S-245_10 mg

SKA-121

Non Antibodies

S. Molecules

The reconstituted solution can be stored at 4°C for up to 1 week. For longer periods (up to 6 months), small aliquots should be stored at -20°C. We do not recommend storing the product in working solutions for longer than a few days. Avoid multiple freeze-thaw cycles.

Shipped at room temperature. Product as supplied can be stored intact at room temperature for several weeks. For longer periods, it should be stored at -20°C

KCa3.1 is a calcium-activated K+ channel. KCa2/3 channels are voltage-independent and share a Ca2+/calmodulin-mediated gating mechanism1.KCa3.1 and KCa2 channels are expressed in cells and enable them to hyperpolarize in order to regulate Ca2+ influx through inward rectifier Ca2+ channels, pass on hyperpolarization through gap junctions, or regulate firing frequency by preventing an untimely or premature action potential initiation2. Pharmacological activation of KCa channels has therefore been suggested as a treatment for various diseases. The different specific activities of KCa2 and KCa3.1 channels create a difference between the activators of these two types of channels. KCa2 activators can potentially reduce neuronal excitability in central nervous system disorders like epilepsy and ataxia. KCa3.1 activators could be useful as endothelial targeted antihypertensives and to enhance fluid secretion in the airways in cystic fibrosis3,4.The positive-gating modulators used until today have low selectivity and affect both KCa2 and KCa3.1, making it impossible to differentiate the phenotypes of these two receptors. To avoid KCa2 channel-mediated side effects, it is highly desirable to identify selective KCa3.1 activators that could be used as pharmacological tools to further dissect the in vivo role of KCa3.1 in blood pressure control and to help determine whether KCa3.1 activators could eventually be developed into a new class of endothelial-targeted antihypertensives. SKA-121 (5-methylnaphtho[2,1-d]oxazol-2-amine), a compound generated through an isosteric replacement approach, activates KCa3.1 with an EC50 of 111 nM, exhibits 40- to 80-fold selectivity over the three KCa2 channels and lowers blood pressure in mice as determined by telemetry without exerting KCa2 channel-mediated effects on HR5.

Alomone Labs

KCa3.1 channels

SKA-121 (#S-245) is a highly pure, synthetic, and biologically active compound.

A Selective Positive Gating Modulator of KCa3.1 Channels

198.22

5-Methylnaphtho[2,1-d]oxazol-2-amine

Synthetic

C12H10N2O

100 nM - 10 µM

SKA-121 is a positive gating modulator of KCa3.1 channels (EC50 of 109 nM), potent and selective over KCa2 subtypes (EC50 of 4.4-8.7 μM). Significantly lowers mean arterial blood pressure in vivo in wild-type hypertensive mice (100 mg/kg i.p.)1.

Soluble in DMSO. Spin down all products before handling.

Soluble in DMSO. Spin down all products before handling.

Store at -20°C. It is recommended to aliquot stock solutions to avoid repeated thawing and freezing.

1-2 Business Days

Israel/IL

Application key: FC- Flow cytometry, IFC- Indirect flow cytometry, IHC- Immunohistochemistry,LCI- Live cell imaging, Calcium imaging assay,Cell survival assay, Electrophysiology, Neurite outgrowth assay.

>97% (HPLC)

1820708-73-3

Powder

Contact Alomone Labs for technical support and product customization

41116134

Yes

5-methylbenzo[g][1,3]benzoxazol-2-amine