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(R)-(+)-Bay K 8644
L-type Ca2+-channel blocker with negative inotropic and vasodilatatory effects in vivo. Enantiomer showing opposite effects to the racemate (±)-Bay K 8644 and (S)-(-)- enantiomer. Also TMEM176B inhibitor. Induces IL-1β secretion and caspase-1 activation in bone marrow-derived dendritic cells in vitro and increases survival of tumor-bearing mice, both alone and in combination with immune checkpoint blockers.
|Storage||Store at +4°C|
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
|Solvent||Max Conc. mg/mL||Max Conc. mM|
Preparing Stock Solutions
The following data is based on the product molecular weight 356.3. Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.
|Concentration / Solvent Volume / Mass||1 mg||5 mg||10 mg|
|1 mM||2.81 mL||14.03 mL||28.07 mL|
|5 mM||0.56 mL||2.81 mL||5.61 mL|
|10 mM||0.28 mL||1.4 mL||2.81 mL|
|50 mM||0.06 mL||0.28 mL||0.56 mL|
References are publications that support the biological activity of the product.
Franckowiak et al (1985) The optical isomers of the 1,4-dihydropyridine BAY K 8644 show opposite effects on Ca channels. Eur.J.Pharmacol. 114 223 PMID: 2412855
O'Neill and Bolger (1988) Enantiomer selectivity and the development of tolerance to the behavioral effects of the calcium channel activator BAY K 8644. Brain Res.Bull. 21 865 PMID: 2465070
Ravens and Schopper (1990) Opposite cardiac actions of the enantiomers of Bay K 8644 at different membrane potentials in guinea-pig papillary muscles. Naunyn Schmiedebergs Arch.Pharmacol. 341 232 PMID: 1692975
Shi et al (2008) Induction of pluripotent stem cells from mouse embryonic fibroblasts by Oct4 and Klf4 with small-molecule compounds. Cell Stem Cell. 3 568 PMID: 18983970
Segovia et al (2019) Targeting TMEM176B enhances antitumor immunity and augments the efficacy of immune checkpoint blockers by unleashing inflammasome activation. Cancer Cell. 35 767 PMID: 31085177
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1 Citation for (R)-(+)-Bay K 8644
Citations are publications that use Tocris products. Selected citations for (R)-(+)-Bay K 8644 include:
Sidaway and Teramoto (2014) L-type Ca2+ channel sparklets revealed by TIRF microscopy in mouse urinary bladder smooth muscle. PLoS One 9 e93803 PMID: 24699670
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