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Ixazomib (MLN2238) Proteasome inhibitor

Name: Ixazomib (MLN2238)
Brand: Selleck Chemicals
SKU: S2180
Availability: InStock
Rating: 5 (69 reviews)

Catalog No.S2180 Purity:99.88%

Ixazomib (MLN2238) inhibits the chymotrypsin-like proteolytic (β5) site of the 20S proteasome with IC50 and K_i of 3.4 nM and 0.93 nM in cell-free assays, respectively, also inhibits the caspase-like (β1) and trypsin-like (β2) proteolytic sites, with IC50 of 31 and 3500 nM. This compound induces autophagy. Phase 3.

Chemical Structure

Molecular Weight: 361.03

Purity & Quality Control

Batch: Purity: 99.88%

99.88

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Signaling Pathway

Proteasome Signaling Pathway

Cell Culture and Working Concentration

Cell Lines	Assay Type	Incubation Time	Activity Description	PMID
HEK293	Function assay	1 hr	Inhibition of NFkappaB in HEK293 cells incubated for 1 hr prior to TNF-alpha challenge measured after 3 hrs by luciferase reporter gene assay relative to control, IC50 = 0.0062 μM.	ChEMBL
Calu6	Function assay	1 hr	Inhibition of 26S proteasome beta5 subunit in human Calu6 cells using Suc-LLVY-aminoluciferin as substrate after 1hr by luminescence assay, IC50 = 0.009 μM.	ChEMBL
Calu6	Cytotoxicity assay	72 hrs	Cytotoxicity against human Calu6 cells after 72 hrs by luminescence assay, LC50 = 0.014 μM.	ChEMBL
U266B1	Cytotoxicity assay	72 hrs	Cytotoxicity against human U266B1 cells assessed as reduction in cell viability after 72 hrs by CellTiter 96 aqueous one solution assay, IC50 = 0.05215 μM.	29934218
RPMI8226	Cytotoxicity assay	72 hrs	Cytotoxicity against human RPMI8226 cells assessed as reduction in cell viability after 72 hrs by CellTiter 96 aqueous one solution assay, IC50 = 0.05532 μM.	29934218
ARH77	Cytotoxicity assay	72 hrs	Cytotoxicity against human ARH77 cells assessed as reduction in cell viability after 72 hrs by CellTiter 96 aqueous one solution assay, IC50 = 0.0655 μM.	29934218
TC32	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for TC32 cells	29435139
U-2 OS	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for U-2 OS cells	29435139
A673	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for A673 cells	29435139
DAOY	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for DAOY 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
BT-37	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-37 cells	29435139
RD	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for RD 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
BT-12	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-12 cells	29435139
NB1643	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB1643 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
OHS-50	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for OHS-50 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
DAOY	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for DAOY cells	29435139
fibroblast cells	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for control Hh wild type fibroblast 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
Rh41	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh41 cells	29435139
A673	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for A673 cells)	29435139
Rh30	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh30 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
SJ-GBM2	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SJ-GBM2 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
NB-EBc1	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB-EBc1 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
Rh18	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh18 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
Rh18	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Rh18 cells	29435139
Click to View More Cell Line Experimental Data

Mechanism of Action

Features

A first-in-class proteasome inhibitor that has improved pharmacokinetics (PK), pharmacodynamics(PD), and antitumor activity in preclinical studies.

Targets

20S proteasome ^[1] (Cell-free assay)	20S proteasome ^[1] (Cell-free assay)
0.93 nM(Ki)	3.4 nM

In vitro
In vitro	At higher concentrations, this compound also inhibits the caspase-like (β1) and trypsin-like (β2) proteolytic sites with IC50 of 31nM and 3.5uM, respectively. It inhibits Calu-6 cell with IC50 of 9.7 nM. MLN2238 is a selective, potent, and reversible inhibitor of the proteasome in tumor cells. This compound shows time-dependent reversible proteasome inhibition. Both this compound and Bortezomib shows time-dependent reversible proteasome inhibition; however, the proteasome dissociation half-life for it is determined to be ∼6-fold faster than that of Bortezomib (18 and 110 minutes, respectively). It dissociates more rapidly from the proteasome than Bortezomib, consistent with faster recovery of proteasome activity observed in the Proteasome-Glo assay. It has a greater overall tumor pharmacodynamic effect than Bortezomib as assessed by 20S inhibition. ^[1]This compound is the biologically active form of MLN9708. ^[2]
Kinase Assay	Kinase assay
Kinase Assay	Calu-6 cells are cultured in MEM containing 10% fetal bovine serum and 1% penicillin/streptomycin and plated 1 day before the start of the experiment at 1 × 10⁴ cells per well in a 384-well plate. Proteasome activity is assessed by monitoring hydrolysis of the chymotrypsin-like substrate Suc-LLVY-aminoluciferin in the presence of luciferase using the Proteasome-Glo assay reagents according to the manufacturer's instructions. Luminescence is measured using a LEADseeker instrument.
Cell Research	Cell lines	Calu-6 cells
	Concentrations	~10 nM
	Incubation Time	1 hour or 30 minutes
	Method	Calu-6 cells are cultured in MEM containing 10% FBS and 1% penicillin/streptomycin and plated 1 day before the start of the experiment at 1 × 10⁴ cells per well in a 384-well plate. For IC50 determinations, cells are treated with varying concentrations of Bortezomib or this compound in DMSO (0.5% final, v/v) for 1 hour at 37 °C. For reversibility experiments, cells are treated with either 1 μM Bortezomib or this chemical for 30 minutes at 37 °C and then washed thrice in medium to remove the Bortezomib or this agent. Cells are incubated for an additional 4 hours at 37 °C, after which the medium is removed and replaced with fresh medium.
Experimental Result Images	Methods	Biomarkers	Images	PMID
	Western blot	PARP / Cleaved PARP / Caspase-3 / Cleaved Caspase-3 Mcl-1 / Bcl-2 p53 / p21 / NOXA / PUMA / pRb / E2F / Cyclin D1 / CDK6		27687684
	Growth inhibition assay	IC50		29416618

In Vivo
In vivo	MLN2238 induces a greater pharmacodynamic response than Bortezomib in xenograft tumors. This compound shows greater maximum and sustained tumor proteasome inhibition compared with Bortezomib in xenograft models. These results confirm that the improved tumor exposure seen with this agent translates into an improved tumor pharmacodynamic response both at the level of and downstream from the proteasome. It shows antitumor activity in the CWR22 xenograft model. This chemical shows greater tumor pharmacodynamic responses in WSU-DLCL2 xenografts compared with Bortezomib. Similarly, Bortezomib treatment only led to a minor increase in GADD34 levels in WSU-DLCL2 xenograft tumors, whereas it strongly induces its expression. ^[1] This compound has an improved pharmacodynamic profile and antitumor activity compared with Bortezomib in both OCI-Ly10 and PHTX22L models. ^[2]
Animal Research	Animal Models	CB-17 SCID mice are subcutaneously inoculated with MM.1S cells
	Dosages	11 mg/kg
	Administration	Twice weekly for 3 weeks (i.v.)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
Clinical Trial Information (data from https://clinicaltrials.gov, updated on 2024-05-22)
NCT00963820	Completed	Multiple Myeloma	Millennium Pharmaceuticals Inc.\|Takeda	October 2009	Phase 1

References

https://pubmed.ncbi.nlm.nih.gov/20160034/
https://pubmed.ncbi.nlm.nih.gov/21903769/

Chemical Information

Molecular Weight	361.03	Formula	C₁₄H₁₉BCl₂N₂O₄
CAS No.	1072833-77-2	SDF	Download SDF
Synonyms	N/A
Smiles	B(C(CC(C)C)NC(=O)CNC(=O)C1=C(C=CC(=C1)Cl)Cl)(O)O

Storage and Stability

Storage (From the date of receipt)	3 years-20°Cpowder	Storage of Stock Solutions Aliquot the stock solutions to avoid repeated freeze-thaw cycles	1 year-80°Cin solvent
			1 month-20°Cin solvent

In vitro
Batch:

DMSO : 72 mg/mL ( (199.42 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Ethanol : 72 mg/mL

Water : Insoluble

Molecular Weight Calculator

In vivo Batch: Add solvents to the product individually and in order.				In vivo Formulation Calculator
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.
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.	3.600mg/ml (9.97mM)	Taking the 1 mL working solution as an example, add 50 μL of 72 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.	0.900mg/ml (2.49mM)	Taking the 1 mL working solution as an example, add 50 μL of 18 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.

Preparing Stock Solutions

Molarity Calculator

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Dilution Calculator Molecular Weight Calculator

In vivo Formulation Calculator (Clear solution)

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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.

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Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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