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Chemical Structure| 10045-45-1 Chemical Structure| 10045-45-1

Structure of 1-EBIO
CAS No.: 10045-45-1

Chemical Structure| 10045-45-1

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1-EBIO is an epithelial KCa channel activator that stimulates a sustained transepithelial Cl- secretion response in T84 monolayers. It induces hyperpolarization in aortic valve endothelial cells with an amplitude similar to that of ACh. It promotes the differentiation of embryonic stem cells (ESCs) into cardiomyocytes.

Synonyms: 1-Ethyl-2-benzimidazolinone; 1-Ethylbenzimidazolinone

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Product Details of 1-EBIO

CAS No. :10045-45-1
Formula : C9H10N2O
M.W : 162.19
SMILES Code : O=C1N(CC)C2=CC=CC=C2N1
Synonyms :
1-Ethyl-2-benzimidazolinone; 1-Ethylbenzimidazolinone
MDL No. :MFCD00005715
InChI Key :CXUCKELNYMZTRT-UHFFFAOYSA-N
Pubchem ID :82320

Safety of 1-EBIO

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H319
Precautionary Statements:P305+P351+P338

Isoform Comparison

Biological Activity

In Vitro:

Cell Line
Concentration Treated Time Description References
human lung mast cells (HLMCs) 100 μM 1-EBIO opens KCa3.1 by enhancing its sensitivity to [Ca2+]i. At 100 μM EBIO, maximal K+ currents are achieved in the presence of 100 nM free Ca2+. Cell Commun Signal. 2015 Jul 16;13:32
rat mesenteric artery smooth muscle cells 600 μM 1-EBIO did not induce any measurable K-current, indicating no direct effect on smooth muscle cells Br J Pharmacol. 2001 Dec;134(7):1548-54
rat mesenteric artery endothelial cells 600 μM 1-EBIO induced a ChTX-sensitive outward K-current, indicating activation of IKCa channels Br J Pharmacol. 2001 Dec;134(7):1548-54
CD8+ T cells 20 µM Restored chemotactic ability of HNSCC CD8+ T cells in the presence of adenosine Sci Signal. 2018 Apr 24;11(527):eaaq1616
porcine coronary artery endothelial cells 600 μM To investigate the effect of 1-EBIO on the membrane potential of porcine coronary artery endothelial cells, results showed that 1-EBIO induced a hyperpolarization of 24.1 ± 1.0 mV. Br J Pharmacol. 2002 Mar;135(5):1133-43
porcine coronary artery endothelial cells 500 μM 1-EBIO increased the channel activity by about 4.5 fold Br J Pharmacol. 2002 Aug;136(8):1201-9
porcine coronary artery endothelial cells 600 μM To investigate the effect of 1-EBIO on hyperpolarization in porcine coronary artery endothelial cells, results showed that 1-EBIO-induced hyperpolarization was unaffected by apamin but completely blocked by charybdotoxin. Br J Pharmacol. 2002 Dec;137(8):1346-54
rat mesenteric artery smooth muscle cells 300 μM Activated IK Ca channels, causing slight hyperpolarization of smooth muscle cells (~5 mV). The hyperpolarization induced by 1-EBIO was unaffected by prior exposure to U46619. Br J Pharmacol. 2004 May;142(1):43-50
CA1 pyramidal neurons 400 μM 10 min 1-EBIO significantly reduced ethanol withdrawal-induced hyperexcitability in CA1 neurons and partially reversed withdrawal-induced epileptiform burst firing. Biol Psychiatry. 2011 Apr 1;69(7):625-32
TsA cells 395.5 ± 45.2 μM Test the potentiation effect of 1-EBIO on SK2 channel activity, EC50 = 395.5 ± 45.2 μM Nat Commun. 2012;3:1021

Protocol

Bio Calculators
Preparing Stock Solutions 1mg 5mg 10mg

1 mM

5 mM

10 mM

6.17mL

1.23mL

0.62mL

30.83mL

6.17mL

3.08mL

61.66mL

12.33mL

6.17mL

Dissolving Methods
Please choose the appropriate dissolution scheme according to your animal administration guide.For the following dissolution schemes, clear stock solution should be prepared according to in vitro experiments, and then cosolvent should be added in turn:

in order to ensure the reliability of the experimental results, the clarified stock solution can be properly preserved according to the storage conditions; The working fluid for in vivo experiment is recommended to be prepared now and used on the same day;

The percentage shown in front of the following solvent refers to the volume ratio of the solvent in the final solution; If precipitation or precipitation occurs in the preparation process, it can be assisted by heating and/or ultrasound.
Protocol 1
Protocol 2

References

[1]References are publications that support the biological activity of the product. Ayotunde and Adeagbo (1999) 1-Ethyl-2-benzimidazolinone stimulates endothelial KCa channels and nitric oxide formation in rat mesenteric vessels. Eur.J.Pharmacol. 379 151 PMID: 10497901 Devor et al (1996) Modulation of Cl- secretion by benzimidazolones. I. Direct activation of a Ca2+ - dependent K+ channel. Am.J.Physiol. 271 L775 PMID: 8944721 Kusama et al (2005) Reduced hyperpolarisation in endothelial cells of rabbit aortic value following chronic nitroglycerine administration. Br.J.Pharmacol. 146 487 PMID: 16056232 Kleger et al (2010) Modulation of calcium-activated potassium channels induces cardiogenesis of pluripotent stem cells and enrichment of pacemaker-like cells. Circulation. 122 1823 PMID: 20956206 If you know of a relevant reference for 1-EBIO, please let us know.

[2]Roth EK, Hirtz S, Duerr J, Wenning D, Eichler I, Seydewitz HH, Amaral MD, Mall MA. The K+ channel opener 1-EBIO potentiates residual function of mutant CFTR in rectal biopsies from cystic fibrosis patients. PLoS One. 2011;6(8):e24445

[3]Yin MZ, Park SW, Kang TW, Kim KS, Yoo HY, Lee J, Hah JH, Sung MH, Kim SJ. Activation of K(+) channel by 1-EBIO rescues the head and neck squamous cell carcinoma cells from Ca(2+) ionophore-induced cell death. Korean J Physiol Pharmacol. 2016 Jan;20(1):25-33

[4]Alvarez LJ, Zamudio AC, Candia OA. Cl- secretory effects of EBIO in the rabbit conjunctival epithelium. Am J Physiol Cell Physiol. 2005 Jul;289(1):C138-47

[5]Edwards G, Gardener MJ, Feletou M, Brady G, Vanhoutte PM, Weston AH. Further investigation of endothelium-derived hyperpolarizing factor (EDHF) in rat hepatic artery: studies using 1-EBIO and ouabain. Br J Pharmacol. 1999 Nov;128(5):1064-70

 

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