Novel Inhibitors of the Gardos Channel for the Treatment of Sickle Cell Disease
摘要:
Sickle cell disease (SCD) is a hereditary condition characterized by deformation of red blood cells (RBCs). This phenomenon is due to the presence of abnormal hemoglobin that polymerizes upon deoxygenation. This effect is exacerbated when dehydrated RBCs experience a loss of both water and potassium salts. One critical pathway for the regulation of potassium efflux from RBCs is the Gardos channel, a calcium-activated potassium channel. This paper describes the synthesis and biological evaluation of a series of potent inhibitors of the Gardos channel. The goal was to identify compounds that were potent and selective inhibitors of the channel but had improved pharmacokinetic properties compared to 1, Clotrimazole. Several triarylamides such as 10 and 21 were potent inhibitors of the Gardos channel (IC50 of < 10 nM) and active in a mouse model of SCD. Compound 21 (ICA-17043) was advanced into phase 3 clinical trials for SCD.
The use of novel inhibitors of potassium flux is disclosed for the treatment of inflammatory processes, such as multiple sclerosis, insulin-dependent (type I) diabetes mellitus, rheumatoid arthritis, peripheral neuritis and pulmonary hypertension. The compounds are also of use in treating and preventing stroke. These inhibitors have a high specificity for the IK1 channel and greater stability relative to non-fluorine substituted homologues.
Methods for treating malaria using potassium channel inhibitors
申请人:THE CHILDREN'S MEDICAL CENTER CORPORATION
公开号:US10179115B2
公开(公告)日:2019-01-15
The present invention relates to the field of anti-malarials. In particular, the disclosure relates to methods for treating malaria in a subject by administering to said subject a potassium channel inhibitor. The disclosed potassium channel inhibitors provide wide bioavailability, long half-life, and good toxicity profiles while showing high potency for killing parasites which cause malaria. In certain exemplary embodiments, the potassium channel inhibitor is an inhibitor of calcium-activated potassium channels. In certain exemplary embodiments, the potassium channel inhibitor is an inhibitor of the Gardos channel.
COMPOSITIONS AND METHODS FOR MODULATING CELL-CELL FUSION VIA INTERMEDIATE-CONDUCTANCE CALCIUM-ACTIVATED POTASSIUM CHANNELS
申请人:Boehringer Ingelheim International GmbH
公开号:EP2358750A2
公开(公告)日:2011-08-24
METHODS FOR TREATING MALARIA USING POTASSIUM CHANNEL INHIBITORS
申请人:THE CHILDREN'S MEDICAL CENTER CORPORATION
公开号:US20180042872A1
公开(公告)日:2018-02-15
The present invention relates to the field of anti-malarials. In particular, the disclosure relates to methods for treating malaria in a subject by administering to said subject a potassium channel inhibitor. The disclosed potassium channel inhibitors provide wide bioavailability, long half-life, and good toxicity profiles while showing high potency for killing parasites which cause malaria. In certain exemplary embodiments, the potassium channel inhibitor is an inhibitor of calcium-activated potassium channels. In certain exemplary embodiments, the potassium channel inhibitor is an inhibitor of the Gardos channel.