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Celastrol Proteasome inhibitor

Name: Celastrol
Brand: Selleck Chemicals
SKU: S1290
Availability: InStock
Rating: 5 (26 reviews)

Cat.No.S1290

Celastrol is a potent proteasome inhibitor for the chymotrypsin-like activity of a purified 20S proteasome with IC50 of 2.5 μM. This compound induces apoptosis and autophagy via the ROS/JNK signaling pathway. It inhibits dopaminergic neuronal death of Parkinson's disease through activating mitophagy.

Chemical Structure

Molecular Weight: 450.61

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Quality Control

Batch: Purity: 99.64%

99.64

Related Targets	HDAC Caspase Secretase MMP HCV Protease Cysteine Protease Tyrosinase DPP HIV Protease Serine Protease
Other Proteasome Inhibitors	MG132 Epoxomicin (BU-4061T) ONX-0914 (PR-957) Oprozomib Delanzomib VR23 Marizomib (Salinosporamide A) PI-1840 KSQ-4279 (USP1-IN-1) Isoginkgetin

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Concentration	Incubation Time	Activity Description	PMID
RAW264.7	Antiinflammatory assay		24 hrs	Antiinflammatory activity against mouse RAW264.7 cells assessed as inhibition of LPS-induced NO production treated 3 hrs before LPS challenge assessed after 24 hrs by Griess reagent assay, IC50 = 0.23 μM.	11809076
RAW264.7	Antiinflammatory assay		24 hrs	Antiinflammatory activity against mouse RAW264.7 cells assessed as inhibition of LPS-induced NF-kappaB activation treated 3 hrs before LPS challenge assessed after 24 hrs by SEAP reporter gene assay, IC50 = 0.27 μM.	11809076
RPMI8226	Growth inhibition assay			Growth inhibition of human RPMI8226 cells, IC50 = 3 μM.	18164197
HeLa	Function assay			Inhibition of TNF-alpha-induced NF-kappaB activation in human HeLa cells by SEAP reporter gene assay, IC50 = 0.15 μM.	18841906
RAW264.7	Function assay			Inhibition of LPS-induced NF-kappaB activation in mouse RAW264.7 cells by SEAP reporter gene assay, IC50 = 0.3 μM.	18841906
SH-SY5Y	Function assay			Neuroprotection against beta-amyloid peptide 1-42-induced toxicity in human SH-SY5Y cells assessed as lactate dehydrogenase release, EC50 = 0.03764 μM.	19138859
HeLa	Function assay		2 hrs	Amplification of HSF1 transcriptional activity in human heat shock-induced HeLa cells assessed as granule formation treated 1 hr before heat shock challenge measured after 2 hrs without recovery time by immunocytochemical staining, EC50 = 1.1 μM.	19502057
SK-N-SH	Cytotoxicity assay		72 hrs	Cytotoxicity against human SK-N-SH cells after 72 hrs by MTS assay, CC50 = 1.6 μM.	19502057
HeLa	Function assay		3 hrs	Amplification of HSF1 transcriptional activity in human HeLa cells assessed as granule formation pretreated for 3 hrs by immunocytochemical staining, EC50 = 2.6 μM.	19502057
HeLa	Cytotoxicity assay		72 hrs	Cytotoxicity against human HeLa cells after 72 hrs by MTS assay, CC50 = 3 μM.	19502057
HeLa	Function assay			Inhibition of NF-kappaB activity in human HeLa cells by SEAP reporter assay, IC50 = 0.15 μM.	20469887
LNCAP	Antitumor assay			Antitumor activity against human LNCAP cells, IC50 = 2.5 μM.	20627556
PC12	Cytoprotective assay			Cytoprotective activity against t-BPH-induced cell damage in rat PC12 cells assessed as cell viability, IC50 = 3.15 μM.	20627556
PC12	Cytoprotective assay	1.6 uM		Cytoprotective activity against t-BPH-induced cell damage in rat PC12 cells assessed as cell viability at 1.6 uM	20627556
THP1	Apoptosis assay		24 hrs	Induction of apoptosis in TRAIL-resistant human THP1 cells after 24 hrs by annexin-V staining, EC50 = 15 μM.	20864342
293T	Function assay		30 mins	Inhibition of LPS-induced NF-kappaB activation in human 293T cells incubated for 30 mins followed by treated with LPS for 6 hrs by dual-luciferase reporter assay, IC50 = 0.17 μM.	21393004
293T	Cytotoxicity assay			Cytotoxicity against human 293T cells assessed as cell viability by dual-luciferase reporter assay, IC50 = 0.67 μM.	21393004
RAW264	Function assay		24 hrs	Inhibition of LPS-induced NO production in mouse RAW264 cells after 24 hrs	21393004
NCI-H460	Cytotoxicity assay			Cytotoxicity against human NCI-H460 cells after overnight incubation by MTT assay, IC50 = 12.3 μM.	21942765
RAW264.7	Antiinflammatory assay		24 hrs	Antiinflammatory activity in mouse RAW264.7 cells assessed as inhibition of LPS-induced NO production after 24 hrs by Griess reagent method, IC50 = 1 μM.	21978676
RAW264.7	Antiinflammatory assay		24 hrs	Antiinflammatory activity in mouse RAW264.7 cells assessed as inhibition of LPS-induced nitric oxide production after 24 hrs by griess assay, IC50 = 1 μM.	22024033
RAW264.7	Function assay		18 hrs	Inhibition of LPS-stimulated NFkappaB activation transfected in mouse RAW264.7 cells after 18 hrs by luciferase reporter gene assay, IC50 = 0.2 μM.	22705020
spleen adherent cells	Antiarthritic assay	200 ug		Antiarthritic effect in Lewis rat adjuvant-induced arthritis model spleen adherent cells restimulated with sonicated Mtb post isolation assessed as reduction in CCR2 expression at 200 ug, ip starting from arthritis onset and continued uninterrupted until	22854193
spleen adherent cells	Antiarthritic assay	200 ug		Antiarthritic effect in Lewis rat adjuvant-induced arthritis model spleen adherent cells restimulated with sonicated Mtb post isolation assessed as reduction in GRO/KC production at 200 ug, ip starting from arthritis onset and continued uninterrupted unti	22854193
spleen adherent cells	Antiarthritic assay	200 ug		Antiarthritic effect in Lewis rat adjuvant-induced arthritis model spleen adherent cells restimulated with sonicated Mtb post isolation assessed as reduction in MCP1 production at 200 ug, ip starting from arthritis onset and continued uninterrupted until	22854193
spleen adherent cells	Antiarthritic assay	200 ug		Antiarthritic effect in Lewis rat adjuvant-induced arthritis model spleen adherent cells restimulated with sonicated Mtb post isolation assessed as reduction in RANTES production at 200 ug, ip starting from arthritis onset and continued uninterrupted unti	22854193
spleen adherent cells	Antiarthritic assay	200 ug		Antiarthritic effect in Lewis rat adjuvant-induced arthritis model spleen adherent cells restimulated with sonicated Mtb post isolation assessed as reduction in TNFalpha production at 200 ug, ip starting from arthritis onset and continued uninterrupted un	22854193
spleen adherent cells	Antiarthritic assay	200 ug		Antiarthritic effect in Lewis rat adjuvant-induced arthritis model spleen adherent cells restimulated with sonicated Mtb post isolation assessed as reduction in CCR3 expression at 200 ug, ip starting from arthritis onset and continued uninterrupted until	22854193
spleen adherent cells	Antiarthritic assay	200 ug		Antiarthritic effect in Lewis rat adjuvant-induced arthritis model spleen adherent cells restimulated with sonicated Mtb post isolation assessed as reduction in CCR6 expression at 200 ug, ip starting from arthritis onset and continued uninterrupted until	22854193
spleen adherent cells	Antiarthritic assay	200 ug		Antiarthritic effect in Lewis rat adjuvant-induced arthritis model spleen adherent cells restimulated with sonicated Mtb post isolation assessed as reduction in CXCR1 expression at 200 ug, ip starting from arthritis onset and continued uninterrupted until	22854193
spleen adherent cells	Antiarthritic assay	200 ug		Antiarthritic effect in Lewis rat adjuvant-induced arthritis model spleen adherent cells restimulated with sonicated Mtb post isolation assessed as reduction in CXCR2 expression at 200 ug, ip starting from arthritis onset and continued uninterrupted until	22854193
spleen adherent cells	Antiarthritic assay	200 ug		Antiarthritic effect in Lewis rat adjuvant-induced arthritis model spleen adherent cells restimulated with sonicated Mtb post isolation assessed as reduction in CXCR4 expression at 200 ug, ip starting from arthritis onset and continued uninterrupted until	22854193
spleen adherent cells	Function assay	200 ug		Increase in CCR1 expression in Lewis rat adjuvant-induced arthritis model spleen adherent cells restimulated with sonicated Mtb post isolation at 200 ug, ip starting from arthritis onset and continued uninterrupted until study end by qPCR relative baselin	22854193
spleen adherent cells	Antiarthritic assay	200 ug		Antiarthritic effect in Lewis rat adjuvant-induced arthritis model spleen adherent cells restimulated with sonicated Mtb post isolation assessed as reduction in IL-1beta production at 200 ug, ip starting from arthritis onset and continued uninterrupted un	22854193
spleen adherent cells	Antiarthritic assay	200 ug		Antiarthritic effect in Lewis rat adjuvant-induced arthritis model spleen adherent cells restimulated with sonicated Mtb post isolation assessed as reduction in CCR5 expression at 200 ug, ip starting from arthritis onset and continued uninterrupted until	22854193
spleen adherent cells	Function assay		24 hrs	Increase in CCR1 protein surface expression in sonicated Mtb-stimulated spleen adherent cells isolated from Lewis rat adjuvant-induced arthritis model pre-incubated with 0.1 to 0.3 uM compound before stimulation with sonicated Mtb for 24 hrs by flow cytom	22854193
RAW264.7	Antiinflammatory assay		24 hrs	Antiinflammatory activity in mouse RAW264.7 cells assessed as inhibition of LPS-induced NO production after 24 hrs by Griess method, IC50 = 1 μM.	23127886
RAW264.7	Antiinflammatory assay		24 hrs	Antiinflammatory activity in mouse RAW264.7 cells assessed as inhibition of LPS-induced TNFalpha production incubated for 24 hrs by ELISA, IC50 = 0.8 μM.	23234407
RAW264.7	Antiinflammatory assay		24 hrs	Antiinflammatory activity in mouse RAW264.7 cells assessed as inhibition of LPS-induced nitric oxide generation incubated for 24 hrs, IC50 = 1 μM.	23234407
RAW264.7	Antiinflammatory assay			Anti-inflammatory activity in mouse RAW264.7 cells assessed as inhibition of LPS-induced nitric oxide production by Griess reaction based method, IC50 = 1 μM.	25637363
MCF7	Cytotoxicity assay		72 hrs	Cytotoxicity against human MCF7 cells assessed as growth inhibition after 72 hrs by MTS/PMS assay, IC50 = 0.153 μM.	25756299
MCF7	Function assay		24 hrs	Inhibition of HSP90 in human MCF7 cells assessed as pAkt degradation at 5 times IC50 after 24 hrs by Western blot analysis	25756299
MCF7	Function assay		24 hrs	Inhibition of HSP90 in human MCF7 cells assessed as Her2 degradation at 5 times IC50 after 24 hrs by Western blot analysis	25756299
MCF7	Function assay		24 hrs	Inhibition of HSP90 in human MCF7 cells assessed as Cdk6 degradation at 5 times IC50 after 24 hrs by Western blot analysis	25756299
MCF7	Function assay		24 hrs	Inhibition of HSP90 in human MCF7 cells assessed as Raf degradation at 5 times IC50 after 24 hrs by Western blot analysis	25756299
MCF7	Function assay		24 hrs	Change in Cdc37 expression in human MCF7 cells at 5 times IC50 after 24 hrs by Western blot analysis	25756299
MCF7	Function assay		24 hrs	Change in p23 expression in human MCF7 cells at 5 times IC50 after 24 hrs by Western blot analysis	25756299
MCF7	Function assay		24 hrs	Inhibition of HSP90 in human MCF7 cells assessed as disruption of interaction with Cdc37 at 5 times IC50 after 24 hrs by co-immunoprecipitation assay	25756299
MCF7	Function assay		24 hrs	Inhibition of HSP90 in human MCF7 cells assessed as disruption of interaction with p23 at 5 times IC50 after 24 hrs by co-immunoprecipitation assay	25756299
SGC7901	Anticancer assay		48 hrs	Anticancer activity against human SGC7901 cells assessed as cell survival after 48 hrs by MTT assay, IC50 = 0.15 μM.	25812966
SMMC7721	Anticancer assay		48 hrs	Anticancer activity against human SMMC7721 cells assessed as cell survival after 48 hrs by MTT assay, IC50 = 0.58 μM.	25812966
MGC803	Anticancer assay		48 hrs	Anticancer activity against human MGC803 cells assessed as cell survival after 48 hrs by MTT assay, IC50 = 1.55 μM.	25812966
HepG2	Anticancer assay		48 hrs	Anticancer activity against human HepG2 cells assessed as cell survival after 48 hrs by MTT assay, IC50 = 4.01 μM.	25812966
A549	Antiproliferative assay		48 hrs	Antiproliferative activity against paclitaxel-resistant human A549 cells assessed as reduction in cell viability after 48 hrs by MTT assay, IC50 = 2.01 μM.	27647369
A549	Antiproliferative assay		48 hrs	Antiproliferative activity against human A549 cells assessed as reduction in cell viability after 48 hrs by MTT assay, IC50 = 2.02 μM.	27647369
MCF7	Antiproliferative assay		48 hrs	Antiproliferative activity against human MCF7 cells assessed as reduction in cell viability after 48 hrs by MTT assay, IC50 = 2.13 μM.	27647369
PANC1	Antiproliferative assay		48 hrs	Antiproliferative activity against human PANC1 cells assessed as reduction in cell viability after 48 hrs by MTT assay, IC50 = 2.48 μM.	27647369
LNCAP	Function assay	5 uM	24 hrs	Antagonist activity at AR in human LNCAP cells assessed as suppression of DHT-induced receptor transcriptional activity at 5 uM after 24 hrs by dual luciferase reporter gene assay	27994731
A549	Growth inhibition assay		6 days	Growth inhibition of human A549 cells measured every 2 hrs over 6 days by live cell imaging based method, IC50 = 0.69 μM.	28621943
HEK293	Function assay	10 uM	20 mins	Inhibition of Galphao interaction with GFP-fused RGS17 (unknown origin) deltaN mutant expressed in HEK293 cells assessed as increase in RGS17 deltaN mutant localization at cytoplasm at 10 uM up to 20 mins by confocal microscopic analysis	28621943
HEK293	Function assay	100 uM	5 mins	Inhibition of Galpha0 interaction with GFP-fused RGS17 (unknown origin) deltaN mutant expressed in HEK293 cells assessed as increase in RGS17 deltaN mutant localization at cytoplasm at 100 uM up to 5 mins by confocal microscopic analysis	28621943
HEK293	Function assay	10 uM	5 mins	Inhibition of Galphao interaction with GFP-fused RGS17 (unknown origin) deltaN mutant expressed in HEK293 cells assessed as increase in RGS17 deltaN mutant localization at cytoplasm at 10 uM up to 5 mins by confocal microscopic analysis	28621943
MIAPaCa2	Antiproliferative assay		72 hrs	Antiproliferative activity against human MIAPaCa2 cells after 72 hrs by MTT assay, IC50 = 0.46 μM.	28688281
SKBR3	Antiproliferative assay		72 hrs	Antiproliferative activity against human SKBR3 cells after 72 hrs by MTT assay, IC50 = 0.72 μM.	28688281
SKOV3	Antiproliferative assay		72 hrs	Antiproliferative activity against human SKOV3 cells after 72 hrs by MTT assay, IC50 = 1.16 μM.	28688281
MDA-MB-231	Antiproliferative assay		72 hrs	Antiproliferative activity against human MDA-MB-231 cells after 72 hrs by MTT assay, IC50 = 1.32 μM.	28688281
A549	Antiproliferative assay		72 hrs	Antiproliferative activity against human A549 cells after 72 hrs by MTT assay, IC50 = 1.56 μM.	28688281
BJ	Cytotoxicity assay		72 hrs	Cytotoxicity against human BJ cells assessed as reduction in cell viability after 72 hrs by MTT assay, IC50 = 2.74 μM.	28688281
NCI-H460	Function assay	1 uM	12 hrs	Activation of HSF1 in human NCI-H460 cells assessed as upregulation of HSP25 protein levels at 1 uM after 12 hrs by Western blot analysis	28737916
NCI-H460	Function assay	1 uM	12 hrs	Activation of HSF1 in human NCI-H460 cells assessed as upregulation of HSP70 protein levels at 1 uM after 12 hrs by Western blot analysis	28737916
NCI-H1299	Cytotoxicity assay			Cytotoxicity in human NCI-H1299 cells assessed as reduction in cell viability, IC50 = 1 μM.	28754470
BCP-ALL	Cytotoxicity assay			Cytotoxicity in human BCP-ALL cells assessed as reduction in cell viability, IC50 = 1 μM.	28754470
T-ALL	Cytotoxicity assay			Cytotoxicity in human T-ALL cells assessed as reduction in cell viability, IC50 = 1 μM.	28754470
Daudi	Cytotoxicity assay			Cytotoxicity in human Daudi cells assessed as reduction in cell viability, IC50 = 1 μM.	28754470
HL60	Cytotoxicity assay			Cytotoxicity in human HL60 cells assessed as reduction in cell viability, IC50 = 1 μM.	28754470
TC32	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for TC32 cells	29435139
DAOY	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for DAOY cells	29435139
SJ-GBM2	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SJ-GBM2 cells	29435139
A673	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for A673 cells	29435139
SK-N-MC	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-MC cells	29435139
BT-37	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-37 cells	29435139
NB-EBc1	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB-EBc1 cells	29435139
Saos-2	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Saos-2 cells	29435139
SK-N-SH	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-SH cells	29435139
NB1643	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB1643 cells	29435139
LAN-5	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for LAN-5 cells	29435139
BT-12	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-12 cells	29435139
Rh18	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh18 cells	29435139
OHS-50	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for OHS-50 cells	29435139
RD	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for RD cells	29435139
MG 63 (6-TG R)	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for MG 63 (6-TG R) cells	29435139
Rh30	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh30 cells	29435139
Rh41	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh41 cells	29435139
NB1643	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for NB1643 cells	29435139
A673	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for A673 cells)	29435139
SK-N-MC	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for SK-N-MC cells	29435139
BT-12	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for BT-12 cells	29435139
LAN-5	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for LAN-5 cells	29435139
DAOY	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for DAOY cells	29435139
NB-EBc1	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for NB-EBc1 cells	29435139
SJ-GBM2	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for SJ-GBM2 cells	29435139
BT-37	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for BT-37 cells	29435139
TC32	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for TC32 cells	29435139
MG 63 (6-TG R)	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for MG 63 (6-TG R) cells	29435139
fibroblast cells	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for control Hh wild type fibroblast cells	29435139
U-2 OS	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for U-2 OS cells	29435139
Rh41	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Rh41 cells	29435139
RD	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for RD cells	29435139
Rh18	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Rh18 cells	29435139
Rh30	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Rh30 cells	29435139
Saos-2	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Saos-2 cells	29435139
OHS-50	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for OHS-50 cells	29435139
SK-N-SH	qHTS assay			qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for SK-N-SH cells	29435139
HCT116	Antiproliferative assay		48 hrs	Antiproliferative activity against human HCT116 cells after 48 hrs by MTT assay, IC50 = 5.26 μM.	29486954
HepG2	Antiproliferative assay		48 hrs	Antiproliferative activity against human HepG2 cells after 48 hrs by MTT assay, IC50 = 6.17 μM.	29486954
A549	Antiproliferative assay		48 hrs	Antiproliferative activity against human A549 cells after 48 hrs by MTT assay, IC50 = 6.59 μM.	29486954
MCF7	Antiproliferative assay		48 hrs	Antiproliferative activity against human MCF7 cells after 48 hrs by MTT assay, IC50 = 6.84 μM.	29486954
HEK293	Cytotoxicity assay			Cytotoxicity against HEK293 cells (CO-ADD:MA_007); CC50 by cell viability assay in DMEM (10% FBS) media using TC plates, by Resazurin F(560/590), CC50 = 0.837 μM.	ChEMBL
Click to View More Cell Line Experimental Data

Solubility

In vitro
Batch:

DMSO : 90 mg/mL (199.72 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	4.500mg/ml (9.99mM)	Taking the 1 mL working solution as an example, add 50 μL of 90 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	1.100mg/ml (2.44mM)	Taking the 1 mL working solution as an example, add 50 μL of 22 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

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Average weight of animals: g

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% DMSO

% Tween 80

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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
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Chemical Information, Storage & Stability

Molecular Weight	450.61	Formula	C₂₉H₃₈O₄	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	34157-83-0	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	NSC 70931, Tripterine			Smiles	CC1=C(C(=O)C=C2C1=CC=C3C2(CCC4(C3(CCC5(C4CC(CC5)(C)C(=O)O)C)C)C)C)O

Mechanism of Action

Features	A potent antioxidant and anti-inflammatory drug.
Targets/IC₅₀/Ki	20S proteasome (Cell-free assay) 2.5 μM
In vitro	Celastrol at 5 μM inhibits the chymotrypsin-like, PGPH-like, and trypsin-like activities of the purified 20S proteasome by 80%, 5%, and <1%, respectively, whereas at 10 μM, it inhibits these three proteasomal activities by ∼90%, 15%, and <1%, respectively. This compound significantly inhibits the proteasomal chymotrypsin activity in PC-3 cells in a concentration-dependent manner. It at 2.5 μM to 5 μM induces caspase-3 activity by 4.7-fold to 5.5-fold in PC-3 cells. In this chemical (5 μM) treated cells, the levels of the proteasome target proteins, IκB-α and Bax, are increased after 1 hour and further increased to its peak for 4 hours to 12 hours. This compound (2.5 μM) treatment induces proteasome inhibition by 40%, as shown by the decreased levels of chymotrypsin-like activity and increased accumulation of ubiquitinated proteins in LNCaP cells. It (2.5 μM) induces apoptosis in the Celastrol-treated LNCaP cells, as shown by increased levels of caspase-3 activity (up to 3.5-fold), PARP cleavage, and apoptotic morphology. This compound (300 nM) is found to suppress LPS-induced production of TNF-alpha and IL-1beta by human monocytes and macrophages. It (100 nM) also decreases LPS-induced expression of class II MHC molecules by microglia. This chemical strongly inhibits LPS and IFN-y-induced NO production with IC50 of 200 nM in macrophage lineage cells. It strongly inhibits TNF-α and IFN-γ-induced NO production with IC50 of 200 nM in endothelial cells. This compound (2.5 μM) potentiates the apoptosis induced by TNF and chemotherapeutic agents and inhibits invasion, both regulated by NF-kappaB activation, in KBM-5 cells. It (2.5 μM) suppresses the expression of TNF induced the expression of gene products involved in antiapoptosis (IAP1, IAP2, Bcl-2, Bcl-XL, c-FLIP, and survivin), proliferation (cyclin D1 and COX-2), invasion (MMP-9), and angiogenesis (VEGF) in KBM-5 cells. This chemical (5 μM) is found to inhibit the TNF-induced activation of IkappaBalpha kinase, IkappaBalpha phosphorylation, IkappaBalpha degradation, p65 nuclear translocation and phosphorylation, and NF-kappaB-mediated reporter gene expression. It inhibits proliferating of RPMI 8226, KATOIII, UM-SCC1, U251MG and MDA-MB-231 cells with IC50 of 0.52 μM, 0.54 μM, 0.76 μM, 0.69 μM and 0.67 μM, respectively. This compound (1 μM) inhibits growth of RPMI 8226 with a decrease in the levels of cyclin D1 and cyclin E, but concomitant increase in the levels of p21 and p27. It induces apoptosis in RPMI-8226 cells indicated by the activation of caspase-8, bid cleavage, caspase-9 activation, caspase-3 activation, PARP cleavage and through the down regulation of anti-apoptototic proteins. This chemical (1 μM) suppresses Akt pathway and activates JNK kinase in RPMI-8226 cells.
Kinase Assay	Inhibition of purified 20S proteasome activity
Kinase Assay	A purified rabbit 20S proteasome (0.1 μg) is 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 at different concentrations or in the solvent DMSO for 2 hours at 37 ℃, followed by measurement of inhibition of each proteasomal activity.
In vivo	Celastrol (3 mg/kg) results in significant inhibition (up to 70%) of tumor growth in male nude mice bearing PC-3 tumors, associated with increased p27 levels and Bax level. This compound results more apoptotic tumor cells with the appearance of various PARP cleavage fragments in tumor of male nude mice bearing PC-3 tumors. It causes 35% of tumor inhibition, associated with decreased proteasome activity and decreased expression of AR protein in nude mice bearing C4-2B tumors. This chemical is found to suppress strongly joint swelling and other manifestations of adjuvant arthritis in mice. It (0.2 mg/kg) significantly improves the performance in memory, learning and psychomotor activity tests in rats.
References	[1] https://pubmed.ncbi.nlm.nih.gov/16651429/ [2] https://pubmed.ncbi.nlm.nih.gov/11513350/ [3] https://pubmed.ncbi.nlm.nih.gov/17110449/ [4] https://pubmed.ncbi.nlm.nih.gov/21786165/

Applications

Methods	Biomarkers	PMID
Western blot	HIF-1α Akt / p-Akt / p-p70S6K PARP / p53 / p21 / cIAP1 / Bcl-xl / Bcl-2 IκBα / p-IKKα/β iNOS / COX-2 / Arg-1 Chk2 / p-Chk2 / Cyclin B1 / Cdc25c / p-Cdc25c	25383959
Immunofluorescence	p21 / Nur77	28388439
Growth inhibition assay	Cell viability	29040966