Orignially characterized as an mGluR5 negative allosteric modulator (IC50 = 1.35 μM, Emax = 3.82% of Glu Emax; rat mGluR5 HEK293A cells), ML365 is now better known as selective two-pore potassium (K2P) channel TASK1 (K2P3.1; KCNK3) inhibitor with 100- and 62-fold selectivity over TASK3 (K2p9.1; KCNK9), respectively, by thellium flux (rat TASK1/TASK3 CHO cell IC50 = 4/390 nM) and QPatch assay (rat TASK1/TASK3 CHO cell IC50 = 16/990 nM). ML365 is employed in the range from 40 nM to 20 μM. Selective TASK1 blockage is achieved at the lower end of the concentration range, while TASK3 activity can also be inhibited at the high end of the range.
Selective two-pore potassium (K2P) channel TASK1 (K2P3.1; KCNK3) inhibitor with 62- to 100-fold selectivity over TASK3 (K2p9.1; KCNK9).
Storage Class Code
13 - Non Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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This Letter describes the discovery and SAR of three novel series of mGluR5 non-competitive antagonists/negative allosteric modulators (NAMs) not based on manipulation of an MPEP/MTEP chemotype identified by a functional HTS approach. This work demonstrates fundamentally new mGluR5 NAM chemotypes
Ca2+ handling by the endoplasmic reticulum (ER) serves critical roles in controlling pancreatic β cell function and becomes perturbed during the pathogenesis of diabetes. ER Ca2+ homeostasis is determined by ion movements across the ER membrane, including K+ flux through
Journal of the American Heart Association, 6(9) (2017-09-11)
Heterozygous loss of function mutations in the KCNK3 gene cause hereditary pulmonary arterial hypertension (PAH). KCNK3 encodes an acid-sensitive potassium channel, which contributes to the resting potential of human pulmonary artery smooth muscle cells. KCNK3 is widely expressed in the
TASK-1 is a two-pore domain potassium channel that is important to modulating cell excitability, most notably in the context of neuronal pathways. In order to leverage TASK-1 for therapeutic benefit, its physiological role needs better characterization; however, designing selective inhibitors
Biochemical and biophysical research communications, 503(1), 79-85 (2018-06-01)
The noradrenergic neurons of the locus coeruleus (LC) are associated with various brain functions and psychiatric disorders, such as addiction and depression. It has been shown that neuropeptide galanin (GAL) inhibits neuronal excitability in LC, but the mechanisms remain unclear.
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