Celastrol |
| Catalog No.GC15083 |
Celastrol is a proteasome inhibitor with a potent and preferred inhibition of purified 20S proteasome with an IC50 of 2.5 μM.
Products are for research use only. Not for human use. We do not sell to patients.
Cas No.: 34157-83-0
Sample solution is provided at 25 µL, 10mM.
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Celastrol is a proteasome inhibitor with a potent and preferred inhibition of purified 20S proteasome with an IC50 of 2.5 μM. Celastrol is also an antioxidant, anti-inflammatory agent, and immunosuppressant that can be used in the study of cancer, autoimmune diseases, asthma, chronic inflammation, and neurodegenerative diseases [1-2].
1-5 μM Celastrol inhibits the chymotrypsin-like activity of the 26S proteasome in human prostate cancer cells, and in PC-3 and LNCaP (androgen receptor-positive) cells, Celastrol leads to the accumulation of ubiquitinating proteins and proteasome substrates (IKB-A, Bax, and p27). And induce apoptosis [1]. Celastrol (0-1 μM) inhibited the proliferation and migration of AGS and YCC-2 cells and increased the number of cells in G1 phase [3]. In addition, Celastrol (0-10 μM) completely inhibits NF-κB activation in TNF-induced lung adenocarcinoma (H1299) cells and embryonic kidney (A293) cells, and Celastrol does not directly affect NF-κB binding to DNA, but inhibits NF-κB activation by inhibiting IKK activation [4].
In PC-3 tumor-bearing nude mice, Celastrol at 1 or 3 mg/kg significantly inhibited tumor growth, with inhibition rates of 65% and 82%, respectively, and a decrease in chymotrypsin-like activity was detected in the tumors of Celastrol-treated mice. (45% and 30% of the control group respectively) [1]. In a mouse model of gastric cancer xenotransplantation, Celastrol (1 or 2 mg/kg) reduced gastric tumor load in a dose-dependent manner, and Celastrol increased phosphorylated AMPK and decreased phosphorylated AKT and mTOR in gastric tumors [3].
References:
[1] Yang H, Chen D, Cui QC, et al. Celastrol, a triterpene extracted from the Chinese "Thunder of God Vine," is a potent proteasome inhibitor and suppresses human prostate cancer growth in nude mice. Cancer Res, 2006, 66(9): 4758-4765.
[2] Salminen A, Lehtonen M, Paimela T, et al. Celastrol: molecular targets of thunder god vine[J]. Biochemical and biophysical research communications, 2010, 394(3): 439-442.
[3] Lee HW, Jang KS, Choi HJ, Jo A, Cheong JH, Chun KH. Celastrol inhibits gastric cancer growth by induction of apoptosis and autophagy. BMB Rep. 2014 Dec;47(12):697-702.
[4] Sethi G, Ahn K S, Pandey M K, et al. Celastrol, a novel triterpene, potentiates TNF-induced apoptosis and suppresses invasion of tumor cells by inhibiting NF-κB–regulated gene products and TAK1-mediated NF-κB activation[J]. Blood, 2007, 109(7): 2727-2735.
| Cell experiment [1]: | |
Cell lines | Prostate cancer cell PC-3 |
Preparation Method | Prostate cancer cells were treated with Celastrol or Rubescensine A. The prepared whole cell extracts (30 μg per sample) were then incubated with 40 μM of Ac-DEVD-AMC in 100 μL assay buffer at 37°C for at least 2 hours. Afterwards, western blot was used for detection. |
Reaction Conditions | 2.5-5 μM, 1-12 h |
Applications | Celastrol concentration-dependently increased the levels of ubiquitinated proteins, and elevated levels of IκB-α, Bax, and p27 were also observed in PC-3 cells treated with Celastrol. |
| Animal experiment [1]: | |
Animal models | Human prostate tumor xenograft model |
Preparation Method | Fourteen days after mice were inoculated with PC-3 cells, they were intraperitoneally injected daily with 50 to 100 μL of vehicle [10% DMSO, 70% Cremophor/ethanol (3:1), and 20% PBS] and 1.0 or 3.0 mg/kg Celastrol. |
Dosage form | 1 or 3 mg/kg/day, 16 days, i.p. |
Applications | Celastrol at 1 or 3 mg/kg can significantly inhibit tumor growth, with inhibition rates of 65% and 82% respectively. |
| Kinase experiment [1]: | |
Preparation Method | A purified rabbit 20S proteasome (0.1 μg) was incubated with 40 μM of various fluorogenic peptide substrates in 100 μL assay buffer [20 mM Tris-HCl (pH 7.5)], in the presence of Celastrol or Oridonin at different concentrations or in the solvent DMSO for 2 hours at 37°C, followed by measurement of inhibition of each proteasomal activity. |
Reaction Conditions | 0.1,1,10 and 100 μM, 2 h |
Applications | The chymotrypsin-like activity of the purified 20S proteasome was significantly inhibited by Celastrol with an IC50 value of 2.5 μM. |
References: [1] Yang H, Chen D, Cui QC, et al. Celastrol, a triterpene extracted from the Chinese "Thunder of God Vine," is a potent proteasome inhibitor and suppresses human prostate cancer growth in nude mice. Cancer Res, 2006, 66(9): 4758-4765. | |
| Cas No. | 34157-83-0 | SDF | |
| Chemical Name | (2R,4aS,6aR,6aS,14aS,14bR)-10-hydroxy-2,4a,6a,6a,9,14a-hexamethyl-11-oxo-1,3,4,5,6,13,14,14b-octahydropicene-2-carboxylic acid | ||
| Canonical SMILES | CC1=C(C(=O)C=C2C1=CC=C3C2(CCC4(C3(CCC5(C4CC(CC5)(C)C(=O)O)C)C)C)C)O | ||
| Formula | C29H38O4 | M.Wt | 450.61 |
| Solubility | ≥ 22.55mg/mL in DMSO | Storage | Store at -20°C |
| 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. |
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| Shipping Condition | Evaluation sample solution: shipped with blue ice. All other sizes available: with RT, or with Blue Ice upon request. | ||
| Prepare stock solution | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 2.2192 mL | 11.0961 mL | 22.1921 mL |
| 5 mM | 0.4438 mL | 2.2192 mL | 4.4384 mL |
| 10 mM | 0.2219 mL | 1.1096 mL | 2.2192 mL |
Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)
g
μL
Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)
Calculation results:
Working concentration: mg/ml;
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.
Quality Control & SDS
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- Purity: >99.50%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
Average Rating: 5 (Based on Reviews and 30 reference(s) in Google Scholar.)
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