J-Lat 10.6 cells are treated with DMSO, PR-957 (150 nM) or Carfilzomib (40 nM) alone with or without the HSF1 inhibitor KRIBB11 (1.25 µM) for 48 h. Then the cells are lysed, and Ser320 phosphorylated HSF1, total HSF1 and p24 are detected by Western blot with the corresponding antibodies.
Carfilzomib purchased from MedChemExpress. Usage Cited in:
J Agric Food Chem. 2017 Jun 7;65(22):4384-4394.
[Abstract]
Resveratrol activates the HSF1 signaling pathway. J-Lat A2 cells are treated with various concentrations of Resveratrol or Carfilzomib (50 nM) for 48 h. Then the cells are lysed and Ser320 phosphorylated HSF1 and total HSF1 are detected by Western blot with corresponding antibodies.
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Description
Carfilzomib (PR-171) is an irreversible proteasome inhibitor with an IC50 of 5 nM in ANBL-6 and RPMI 8226 cells.
IC50 & Target
IC50: 5 nM (Proteasome)
In Vitro
Carfilzomib displays preferential in vitro inhibitory potency against the ChT-L activity in the β5 subunit, with over 80% inhibition at doses of 10 nM and above and little or no effect on the PGPH and T-L activities at doses up to 100 nM. Carfilzomib decreases the viability of ANBL-6, RPMI 8226 cells, U266 and KAS-6/1 cells with an IC50 less than 5 nM. Carfilzomib overcome Dex resistance, in that MM1.R cells reveals an IC50 of 15.2 nM, less than the value of 29.3 nM for parental MM1.S cells[1]. Co-treatment with carfilzomib and HDACIs leads to synergistic induction of cell death in various mantle cell lymphoma lines and primary mantle cell lymphoma cells. Combined treatment with carfilzomib or ONX0912 with vorinostat in HF-4B and Granta cells sharply increases caspase activation, PARP cleavage, JNK activation, MnSOD2 induction, and DNA damage[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Carfilzomib Related Antibodies
In Vivo
Carfilzomib (2.0 mg/kg, i.v.) in conbination with 70 mg/kg vorinostat virtually abrogates tumor growth in Granta-luciferace cell xenograft flank model. Combined treatment results in a pronounced reduction in bioluminescence compared to animals treated with single agents or controls with minimal toxicity[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Room temperature in continental US; may vary elsewhere.
Storage
Powder
-20°C
3 years
4°C
2 years
*The compound is unstable in solutions, freshly prepared is recommended.
Solvent & Solubility
In Vitro:
DMSO : 125 mg/mL (173.63 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
Preparing Stock Solutions
ConcentrationSolventMass
1 mg
5 mg
10 mg
1 mM
1.3891 mL
6.9453 mL
13.8906 mL
5 mM
0.2778 mL
1.3891 mL
2.7781 mL
10 mM
0.1389 mL
0.6945 mL
1.3891 mL
View the Complete Stock Solution Preparation Table
*
Please refer to the solubility information to select the appropriate solvent. The compound is unstable in solutions, freshly prepared is recommended.
For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day. The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.
Protocol 1
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: 2.5 mg/mL (3.47 mM); Suspended solution; Need ultrasonic
This protocol yields a suspended solution of 2.5 mg/mL. Suspended solution can be used for oral and intraperitoneal injection.
Taking 1 mL working solution as an example, add 100 μLDMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.
Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
Protocol 2
Add each solvent one by one: 10% DMSO 90% Corn Oil
Solubility: ≥ 2.5 mg/mL (3.47 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Taking 1 mL working solution as an example, add 100 μLDMSO stock solution (25.0 mg/mL) to 900 μLCorn oil, and mix evenly.
Protocol 3
Add each solvent one by one: 5% DMSO 40% PEG300 5% Tween-80 50% Saline
Solubility: 2.5 mg/mL (3.47 mM); Suspended solution; Need ultrasonic
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:
Dosage
mg/kg
Animal weight (per animal)
g
Dosing volume (per animal)
μL
Number of animals
Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO+
%
+
%
Tween-80
+
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO,
. All of co-solvents are available by MedChemExpress (MCE).
, Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration:
mg/mL
Method for preparing stock solution:
mg
drug dissolved in
μL
DMSO (Stock solution concentration: mg/mL).
*The compound is unstable in solutions, freshly prepared is recommended.
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take
μL DMSO stock solution, add
μL .
μL , mix evenly, next add
μL Tween 80, mix evenly, then add
μL Saline.
Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution
If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
[1]. Kuhn DJ, et al. Potent activity of carfilzomib, a novel, irreversible inhibitor of the ubiquitin-proteasome pathway, against preclinical models of multiple myeloma. Blood. 2007 Nov 1;110(9):3281-90.
[Content Brief]
[2]. Dasmahapatra G, et al. Carfilzomib interacts synergistically with histone deacetylase inhibitors in mantle cell lymphoma cells in vitro and in vivo. Mol Cancer Ther. 2011 Sep;10(9):1686-97.
[Content Brief]
Cell Assay
[1]
WST-1 is used to determine the effects of proteasome inhibitors on cell proliferation according to the manufacturer's protocol. The inhibition of proliferation is calculated in relation to parallel control cells that receive vehicle alone and tabulated in KaleidaGraph 3.0.1 or Excel 2000. A linear spline function is used to interpolate the median inhibitory concentration (IC50) using XLfit 4 software. The degree of resistance (DOR) is calculated using the formula: DOR=IC50(resistant cells)/IC50(sensitive cells).
MCE has not independently confirmed the accuracy of these methods. They are for reference only.
Animal Administration
[2]
Animal studies are performed utilizing Beige-nude-XID mice. 10×106 Granta514 cells are pelleted, washed twice with 1X PBS, injected subcutaneously into the right flank. Once the tumors are visible, 5 to 6 mice are treated with carfilzomib±vorinostat and progress of tumor growth or regression is monitored. Stock vorinostat and carfilzomib is dissolved in DMSO and 10% sulfobutylether betacyclodextrin in 10 mM citrate buffer pH respectively. They are stored in −80°C in small aliquots and diluted before injection.
MCE has not independently confirmed the accuracy of these methods. They are for reference only.
References
[1]. Kuhn DJ, et al. Potent activity of carfilzomib, a novel, irreversible inhibitor of the ubiquitin-proteasome pathway, against preclinical models of multiple myeloma. Blood. 2007 Nov 1;110(9):3281-90.
[Content Brief]
[2]. Dasmahapatra G, et al. Carfilzomib interacts synergistically with histone deacetylase inhibitors in mantle cell lymphoma cells in vitro and in vivo. Mol Cancer Ther. 2011 Sep;10(9):1686-97.
[Content Brief]
[1]. Kuhn DJ, et al. Potent activity of carfilzomib, a novel, irreversible inhibitor of the ubiquitin-proteasome pathway, against preclinical models of multiple myeloma. Blood. 2007 Nov 1;110(9):3281-90.
[2]. Dasmahapatra G, et al. Carfilzomib interacts synergistically with histone deacetylase inhibitors in mantle cell lymphoma cells in vitro and in vivo. Mol Cancer Ther. 2011 Sep;10(9):1686-97.
Complete Stock Solution Preparation Table
*
Please refer to the solubility information to select the appropriate solvent. The compound is unstable in solutions, freshly prepared is recommended.
Optional Solvent
ConcentrationSolventMass
1 mg
5 mg
10 mg
25 mg
DMSO
1 mM
1.3891 mL
6.9453 mL
13.8906 mL
34.7266 mL
5 mM
0.2778 mL
1.3891 mL
2.7781 mL
6.9453 mL
10 mM
0.1389 mL
0.6945 mL
1.3891 mL
3.4727 mL
15 mM
0.0926 mL
0.4630 mL
0.9260 mL
2.3151 mL
20 mM
0.0695 mL
0.3473 mL
0.6945 mL
1.7363 mL
25 mM
0.0556 mL
0.2778 mL
0.5556 mL
1.3891 mL
30 mM
0.0463 mL
0.2315 mL
0.4630 mL
1.1576 mL
40 mM
0.0347 mL
0.1736 mL
0.3473 mL
0.8682 mL
50 mM
0.0278 mL
0.1389 mL
0.2778 mL
0.6945 mL
60 mM
0.0232 mL
0.1158 mL
0.2315 mL
0.5788 mL
80 mM
0.0174 mL
0.0868 mL
0.1736 mL
0.4341 mL
100 mM
0.0139 mL
0.0695 mL
0.1389 mL
0.3473 mL
Carfilzomib Related Classifications
Metabolic Enzyme/ProteaseAutophagyApoptosis
ProteasomeAutophagyApoptosis
Help & FAQs
Do most proteins show cross-species activity?
Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.