JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.
Tel: +1-832-696-8203
Email: [email protected]
Worldwide Distributors
In vitro transcription of capped mRNA with modified nucleotides and Poly(A) tail
TSA (Tyramide Signal Amplification), used for signal amplification of ISH, IHC and IC etc.
Separation of phosphorylated and non-phosphorylated proteins without phospho-specific antibody
A convenient and sensitive way for cell proliferation assay and cytotoxicity assay
Protect the integrity of proteins from multiple proteases and phosphatases for different applications.
Binding assays
The chymotrypsin-like activity of purified 20S proteasome was measured. Briefly, 17.5 ng of purified 20S proteasome were incubated in 100 μL of assay buffer (50 mmol/L Tris-HCl, pH 7.5) with or without different concentrations of copper chloride, Disulfiram, or the Disulfiram-copper mixture and 10 μmol/L fluorogenic peptide substrate Suc-LLVY-AMC (for the proteasomal chymotrypsin-like activity) for 2 hrs at 37℃. After incubation, production of hydrolyzed AMC groups was measured with a Wallac Victor3 multilabel counter with an excitation filter of 365 nm and an emission filter of 460 nm.
Cell lines
MDA-MB-231 cells
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.
Reaction Conditions
5 ~ 20 μM; 24 hrs
Applications
The Disulfiram-copper complex potently inhibited the proteasomal activity in cultured breast cancer MDA-MB-231 cells, before induction of apoptotic cancer cell death.
Animal models
Mice bearing MDA-MB-231 tumor xenografts
Dosage form
50 mg/kg/d; p.o.; 29 days
In mice bearing MDA-MB-231 tumor xenografts, Disulfiram significantly inhibited tumor growth (by 74%), associated with in vivo proteasome inhibition and apoptosis induction.
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]. Chen D, Cui QC, Yang H, Dou QP. Disulfiram, a clinically used anti-alcoholism drug and copper-binding agent, induces apoptotic cell death in breast cancer cultures and xenografts via inhibition of the proteasome activity. Cancer Res. 2006 Nov 1;66(21):10425-33.