| Name | Mibefradil dihydrochloride |
| Description | Mibefradil dihydrochloride (Ro 40-5967 (dihydrochloride)) is an blocker of calcium channel with moderate selectivity for T-type Ca2+ channels (T-type and L-type currents with IC50s of 2.7 μM and 18.6 μM, respectively). |
| Cell Research | Human Orai1-3 cDNAs in tetracycline-regulated pcDNA4/TO vectors were transfected into HEK293 T-REx cells with stromal interaction molecule 1 (STIM1) stable expression. The Orai currents were recorded by whole-cell and excised-membrane patch clamp. Ca2+?influx or release was measured by Fura-PE3/AM. Cell growth and death were monitored by WST-1, LDH assays and flow cytometry[3].
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| In vitro | Mibefradil dihydrochloride inhibits reversibly the T- and L-type currents with IC50 values of 2.7 and 18.6 μM, respectively.[1].Mibefradil inhibited Orai1, Orai2, and Orai3 currents dose-dependently. The IC50 for Orai1, Orai2, and Orai3 channels was 52.6, 14.1, and 3.8 μM respectively. Outside-out patch demonstrated that perfusion of 10-μM mibefradil to the extracellular surface completely blocked Orai3 currents and single channel activity evoked by 2-APB. Intracellular application of mibefradil did not alter Orai3 channel activity. Mibefradil at higher concentrations (>50 μM) inhibited Ca2+ release but had no effect on cytosolic STIM1 translocation evoked by thapsigargin. Inhibition on Orai channels by mibefradil was structure-related, as other T-type Ca2+ channel blockers with different structures, such as ethosuximide and ML218, had no or minimal effects on Orai channels. Moreover, mibefradil inhibited cell proliferation, induced apoptosis, and arrested cell cycle progression[3].
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| In vivo | Compared with the saline-treated group, rats receiving Mibefradil or Ethosuximide show significant lower CaV3.2 expression in the spinal cord and DRG. |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice. |
| Solubility Information | H2O : 122 mg/mL (214.58 mM)
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| Keywords | Mibefradil dihydrochloride | inhibit | Mibefradil Dihydrochloride | Calcium Channel | Inhibitor | Ca channels | Ca2+ channels | Mibefradil | Ro 40-5967 |
| Inhibitors Related | L-Ascorbic acid | Ethyl cinnamate | 1-Octanol |
| Related Compound Libraries | Bioactive Compound Library | Membrane Protein-targeted Compound Library | Anti-Cancer Clinical Compound Library | Drug Repurposing Compound Library | Neuroprotective Compound Library | Inhibitor Library | Bioactive Compounds Library Max | Ion Channel Targeted Library | Anti-Cancer Drug Library |
United States
