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Chemical structureResearch use only
CAT. NO. DCAPI1155Featured

Celastrol

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Product overview

Description & Application

Tripterin (Celastrol) is a proteasome inhibitor which potently and preferentially inhibits the chymotrypsin-like activity of a purified 20S proteasome with IC50 of 2.5 μM.

ParameterValue
Chemical NameCelastrol
CAS No.34157-83-0
SynonymsCelastrol;(2r,4as,6as,6ar,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;3-HYDROXY-24-NOR-2-OXO-1(10),3,5,7-FRIEDELATETRAEN-29-OIC ACID;3-HYDROXY-9BETA,13ALPHA-DIMETHYL-2-OXO-24,25,26-TRINOROLEANA-1(10),3,5,7-TETRAEN-29-OIC ACID;TRIPTERIN;Tripterine;CELASTROL(SH);Celastrol (Tripterin);Celastrol (Tripterin );Celasterol;10-Hydroxy-2,4a,6a,9,12b,14a-hexamethyl-11-oxo-1,2,3,4,4a,5,6,6a,11,12b,13,14,14a,14b-tetradecahydro-picene-2-carboxylic acid;C29H38O4;NSC70931;L8GG98663L;Celastrol, Celastrus scandens
FormulaC29H38O4
M.Wt450.6096
SMILESO([H])C([C@]1(C([H])([H])[H])C([H])([H])C([H])([H])[C@]2(C([H])([H])[H])C([H])([H])C([H])([H])[C@]3(C([H])([H])[H])C4=C([H])C([H])=C5C(C([H])([H])[H])=C(C(C([H])=C5[C@]4(C([H])([H])[H])C([H])([H])C([H])([H])[C@@]3(C([H])([H])[H])[C@]2([H])C1([H])[H])=O)O[
Purity>99%
Storage2 years -20°C Powder, 2 weeks 4°C in DMSO, 6 months -80°C in DMSO

Biological Activity

Tripterin (Celastrol) is a proteasome inhibitor which potently and preferentially inhibits the chymotrypsin-like activity of a purified 20S proteasome with IC50 of 2.5 μM.

In Vitro

Tripterin (Celastrol) significantly inhibits the proteasomal chymotrypsin activity in PC-3 cells in a concentration-dependent manner; at 2.5 μM it reaches ~55% inhibition, comparable to its potency to a purified 20S proteasome (IC50=2.5 μM). Furthermore, increased levels of IκB-α, Bax, and p27 are observed, three well known target proteins of the proteasome in PC-3 cells treated with Celastrol[1].

In Vivo

Treatment of PC-3 tumor-bearing nude mice with Tripterin (Celastrol) (1-3 mg/kg/d, i.p., 1-31 days) results in significant inhibition (65-93%) of the tumor growth[1]. Following treatment with 3 and 6 mg/kg Tripterin (Celastrol), the levels of malondialdehyde (MDA) are significantly decreased by 35.2 and 36.7% (P<0.05), respectively. Treatment with 3 and 6 mg/kg Tripterin (Celastrol) markedly restores the GSH level (P<0.05) to almost normal levels[2].

References & source

DC Chemicals original product information

Published experimental findings depend on the model and assay conditions. They do not guarantee equivalent performance in every application. For laboratory research use only.

Product documentation

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Handling guide

2 years -20°C Powder, 2 weeks 4°C in DMSO, 6 months -80°C in DMSO

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