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(-)-Blebbistatin (Synonyms: (S)Blebbistatin)

Catalog No.GC13430

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(-)-Blebbistatin Chemical Structure

Cas No.: 856925-71-8

Size Price Stock Qty
10mM (in 1mL DMSO)
$47.00
In stock
10mg
$88.00
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25mg
$190.00
In stock
500mg
$2,843.00
In stock
1g
$4,532.00
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Sample solution is provided at 25 µL, 10mM.

Product Documents

Quality Control & SDS

View current batch:

Protocol

Kinase experiment [1]:

Actin-activated MgATPase assay

Actin-activated MgATPase activity is measured using an NADH-coupled assay in a Beckman DU 640 spectrophotometer. Blebbistatin [a racemic mixture of the (+) and (-) enantiomers] is added from stocks dissolved in DMSO and the DMSO concentration is maintained at a constant concentration of 5% in all samples.

Cell experiment [2, 3]:

Cell lines

Bovine corneal endothelial cells (BCECs)

Preparation method

The solubility of this compound in DMSO is > 10 mM. General tips for obtaining a higher concentration: Please warm the tube at 37℃ for 10 minutes and/or shake it in the ultrasonic bath for a while. Stock solution can be stored below -20℃ for several months.

Reacting condition

10 μM for 5 min; or 5 μM for 20 minutes

Applications

Blebbistatin effectively inhibited actin-myosin interaction in mouse cardiac muscle through a mechanism independent on Ca2+ influx and activation systems. In addition, blebbistatin prevented thrombin-mediated inhibition of intercellular calcium wave propagation in bovine corneal endothelial cells.

Animal experiment [4]:

Animal models

Zebrafish embryos model

Dosage form

5-25 μM

Applications

Blebbistatin treatment induced zebrafish embryos cardia bifida in a dose-dependent manner.

Other notes

Please test the solubility of all compounds indoor, and the actual solubility may slightly differ with the theoretical value. This is caused by an experimental system error and it is normal.

References:

1. Limouze, J., Straight, A. F., Mitchison, T. and Sellers, J. R. (2004) Specificity of blebbistatin, an inhibitor of myosin II. J Muscle Res Cell Motil. 25, 337-341

2. Ponsaerts, R., D'Hondt, C., Bultynck, G., Srinivas, S. P., Vereecke, J. and Himpens, B. (2008) The myosin II ATPase inhibitor blebbistatin prevents thrombin-induced inhibition of intercellular calcium wave propagation in corneal endothelial cells. Invest Ophthalmol Vis Sci. 49, 4816-4827

3. Dou, Y., Arlock, P. and Arner, A. (2007) Blebbistatin specifically inhibits actin-myosin interaction in mouse cardiac muscle. Am J Physiol Cell Physiol. 293, C1148-1153

4. Wang, X., Chong, M., Wang, H., Zhang, J., Xu, H. and Liu, D. (2015) Block the function of nonmuscle myosin II by blebbistatin induces zebrafish embryo cardia bifida. In Vitro Cell Dev Biol Anim. 51, 211-217

Background

(-)-Blebbistatin is a cell-permeable non-muscle myosin II ATPases inhibitor with an IC50 range of 2 μM [1,2].

Non-muscle myosin II (NM II), an actin-binding protein, plays a central role in regulation of cell migration, adhesion and differentiation [4]. Recent insight into the importance of NM II in these processes has been highlighted by genetic deletion and mutation methods that discovered NM II mutations affect the function of a wide range of proteins and cause monogenic diseases [5.6].

(-)-Blebbistatin is a small molecule inhibitor and preferentially binds to the myosin-ADP-Pi complex to slow down phosphate release [2]. The inhibitor completely eliminate contraction of activity of actin-activated Mg-ATPase and motility of myosins II for several species in vitro (IC50 = 0.5-5.0 μM) [8,9], but it has poor effects on smooth muscle myosin II (IC50 =80 μM) and myosins I,V, and X [3]. Furthermore, blebbistatin can potently inhibit mammalian arterial smooth muscle (IC50=5 μM) [9]. The property that blebbistatin blocks myosin II in an actin-detached state and prevents rigid actomyosin cross-linking is a great advantage in vivo applications [2,11].

In a constant-pressure grant perfusion model system, the CB and TM cells were treated with blebbistatin (10-200 M) and cell morphology was changed, and actin stress fiber content decreased. The blebbistatin effect was completely reversible by washout within 24 hours [10]. Blebbistatin inhibited single cellular contraction without altering the morphologies of intracellular calcium transients (IC50 = 0.43 μM). Exposure to UV light at wavelengths below 488 nm can also cause blebbistatin rapidly suppressed. [8].

References:
[1].  Straight AF, Cheung A, Limouze J, et al. Dissecting temporal and spatial control of cytokinesis with a myosin II Inhibitor. Science, 2003, 299:1743–1747.
[2].  Kovacs M, Toth J, Hetenyi C, Malnasi-Csizmadia A, Sellers JR. Mechanism of blebbistatin inhibition of myosin II. J Biol Chem, 2004, 279:35557–35563.
[3].  Limouze J, Straight AF, Mitchison T, Sellers JR. Specificity of blebbistatin, an inhibitor of myosin II. J Muscle Res Cell Motil, 2004, 25:337–341.
[4].  Miguel Vicente-Manzanares, Xuefei Ma, Robert S. Adelstein,Alan Rick Horwitz. Non-muscle myosin II takes centre stage in cell adhesion and migration.Nat Rev Mol Cell Biol, 2009 Nov, 10(11): 778–790.
[5].  Burt RA, Joseph JE, Milliken S, Collinge JE, Kile BT. Description of a novel mutation leading to MYH9-related disease. Thrombosis Research, 2008, 122(6): 861-863.
[6].  Butcher DT, Alliston T, Weaver VM. A tense situation: forcing tumour progression. Nature Reviews Cancer, 2009 Feb, 9(2):108-122.
[7].  Chen Y, Boukour S, Milloud R, Favier R, Saposnik B, Schlegel N, et al. The abnormal proplatelet formation in MYH9-related macrothrombocytopenia results from an increased actomyosin contractility and is rescued by myosin IIA inhibition. Journal of thrombosis and haemostasis : JTH , 2013, 11:2163-2175.
[8].  Fedorov VV, Lozinsky IT, Sosunov EA, Anyukhovsky EP, Rosen MR, Balke CW, et al. Application of blebbistatin as an excitation-contraction uncoupler for electrophysiologic study of rat and rabbit hearts. Heart rhythm: the official journal of the Heart Rhythm Society, 2007, 4:619-626.
[9].  Zhang X-h, Aydin M, Kuppam D, Melman A, DiSanto ME. In Vitro and In Vivo Relaxation of Corpus Cavernosum Smooth Muscle by the Selective Myosin II Inhibitor, Blebbistatin. The Journal of Sexual Medicine, 2009, 6:2661-2671.
[10].  Zhang M, Rao PV. Blebbistatin, a novel inhibitor of myosin II ATPase activity, increases aqueous humor outflow facility in perfused enucleated porcine eyes. Investigative ophthalmology & visual science, 2005, 46:4130-4138.
[11].  Lucas-Lopez C, Allingham JS, Lebl T, Lawson CP, Brenk R, Sellers JR, et al. The small molecule tool (S)-(-)-blebbistatin: novel insights of relevance to myosin inhibitor design. Organic & biomolecular chemistry, 2008, 6:2076-2084.

Chemical Properties

Cas No. 856925-71-8 SDF
Synonyms (S)Blebbistatin
Chemical Name (S)-3a-hydroxy-6-methyl-1-phenyl-3,3a-dihydro-1H-pyrrolo[2,3-b]quinolin-4(2H)-one
Canonical SMILES O[C@@]12CCN(C3=CC=CC=C3)C1=NC4=CC=C(C)C=C4C2=O
Formula C18H16N2O2 M.Wt 292.33
Solubility ≥ 14.6 mg/mL in DMSO Storage Store at -20°C,unstable in solution, ready to use.
General tips Please select the appropriate solvent to prepare the stock solution according to the solubility of the product in different solvents; once the solution is prepared, please store it in separate packages to avoid product failure caused by repeated freezing and thawing.Storage method and period of the stock solution: When stored at -80°C, please use it within 6 months; when stored at -20°C, please use it within 1 month.
To increase solubility, heat the tube to 37°C and then oscillate in an ultrasonic bath for some time.
Shipping Condition Evaluation sample solution: shipped with blue ice. All other sizes available: with RT, or with Blue Ice upon request.

Complete Stock Solution Preparation Table

Prepare stock solution
1 mg 5 mg 10 mg
1 mM 3.4208 mL 17.104 mL 34.2079 mL
5 mM 0.6842 mL 3.4208 mL 6.8416 mL
10 mM 0.3421 mL 1.7104 mL 3.4208 mL
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Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.
3. All of the above co-solvents are available for purchase on the GlpBio website.

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Average Rating: 5 ★★★★★ (Based on Reviews and 22 reference(s) in Google Scholar.)

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