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Momelotinib (CYT387) JAK inhibitor

Name: Momelotinib (CYT387)
Brand: Selleck Chemicals
SKU: S2219
Availability: InStock
Rating: 5 (49 reviews)

Cat.No.S2219

Momelotinib (CYT387, LM-1149, CYT11387) is an ATP-competitive inhibitor of JAK1/JAK2 with IC50 of 11 nM/18 nM, ~10-fold selectivity versus JAK3. This compound induces apoptosis and autophagy. Phase 3.

Chemical Structure

Molecular Weight: 414.46

Jump to Mechanism of Action Cell Culture & Working Concentration Solubility Chemical Information, Storage & Stability Specificity

Quality Control

Batch: Purity: 99.75%

99.75

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Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Incubation Time	Activity Description	PMID
SET2	Antiproliferative assay	72 hrs	Antiproliferative activity against human SET2 cells expressing JAK2 V617F mutant kinase after 72 hrs by alamar blue assay, IC50=0.232μM.	19762238
BAF3	Antiproliferative assay	72 hrs	Antiproliferative activity against mouse BAF3 cells expressing TEL-JAK2 kinase after 72 hrs by alamar blue assay, IC50=0.798μM.	19762238
CTLL-2	Antiproliferative assay	72 hrs	Antiproliferative activity against IL-2-stimulated mouse CTLL-2 cells expressing JAK1/JAK3 after 72 hrs by alamar blue assay, IC50=1.249μM.	19762238
BAF3	Antiproliferative assay	72 hrs	Antiproliferative activity against mouse BAF3 cells expressing wild type JAK2 kinase after 72 hrs by alamar blue assay in presence of IL-3, IC50=1.43μM.	19762238
HEL 92.1.7	Antiproliferative assay	72 hrs	Antiproliferative activity against human HEL 92.1.7 cells expressing JAK2 V617F mutant kinase after 72 hrs by alamar blue assay, IC50=1.804μM.	19762238
HEL	Antiproliferative assay	48 hrs	Antiproliferative activity against human HEL cells after 48 hrs by CCK-8 assay, IC50=2.3μM.	29940115
BAF3	Antiproliferative assay	72 hrs	Antiproliferative activity against mouse BAF3 cells expressing TEL-JAK3 kinase after 72 hrs by alamar blue assay, IC50=2.425μM.	19762238
K562	Antiproliferative assay	48 hrs	Antiproliferative activity against human K562 cells after 48 hrs by CCK-8 assay, IC50=6.5μM.	29940115
HL60	Antiproliferative assay	48 hrs	Antiproliferative activity against human HL60 cells after 48 hrs by CCK-8 assay, IC50=8.3μM.	29940115
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
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
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
Rh41	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh41 cells	29435139
BAF3	Function assay		Inhibition of JAK2 V617F mutant in mouse BAF3 cells, IC50=1.5μM.	ChEMBL
Click to View More Cell Line Experimental Data

Chemical Information, Storage & Stability

Molecular Weight	414.46	Formula	C₂₃H₂₂N₆O₂	Storage (From the date of receipt)	3 years -20°C(in the dark) powder
CAS No.	1056634-68-4	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	LM-1149 , CYT11387			Smiles	C1COCCN1C2=CC=C(C=C2)NC3=NC=CC(=N3)C4=CC=C(C=C4)C(=O)NCC#N

Solubility

In vitro
Batch:

DMSO : 83 mg/mL (200.26 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.
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	2%DMSO 1 40%PEG300 2 3%Tween80 3 55%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	2.000mg/ml (4.83mM)	Taking the 1 mL working solution as an example, add 20 μL of 100 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 30 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 550 μL of ddH2O to adjust the volume to 1 mL. 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.

In vivo Formulation Calculator (Clear solution)

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

Dosage: mg/kg

Average weight of animals: g

Dosing volume per animal: μL

Number of animals:

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.)

% DMSO

% Tween 80

% ddH₂O

% DMSO

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.

Mechanism of Action

Targets/IC₅₀/Ki	JAK1 ^[1] (Cell-free assay) 11 nM JAK2 ^[1] (Cell-free assay) 18 nM JAK3 ^[1] (Cell-free assay) 155 nM
In vitro	Momelotinib (CYT387) inhibits the proliferation of parental Ba/F3 cells (Ba/F3-wt) stimulated by IL-3 with IC50 of 1400 nM. Furthermore, it also causes the inhibition of cell proliferation in cell lines constitutively activated by JAK2 or MPL signaling, including Ba/F3-MPLW515L cells, CHRF-288-11 cells and Ba/F3-TEL-JAK2 cells with IC50 of 200 nM, 1 nM and 700 nM, respectively. In addition, this compound has been shown to inhibit erythroid colony growth in vitro from JAK2V617F-positive PV patients with similar potency with IC50 of 2μ-4 μM. ^[1] A recent study shows that it inhibits PI3K/AKT and Ras/MAPK signaling induced by IL-6 and IGF-1. Moreover, it induces apoptosis as a single agent and synergizes with the conventional anti-MM therapies bortezomib and melphalan in primary multiple myeloma (MM) cells. ^[2]
Kinase Assay	Cell-free kinase activity assays
Kinase Assay	Glutathione-S-transferase (GST)-tagged JAK kinase domains expressed in insect cells are purified before use in a peptide substrate phosphorylation assay with Momelotinib (CYT387). Assays are carried out in 384-well optiplates using an Alphascreen Protein Tyrosine Kinase P100 detection kit and a PerkinElmer Fusion Alpha instrument.
In vivo	In a murine MPN model, Momelotinib (CYT387) normalizes white cell counts, hematocrit, spleen size, and restores physiologic levels of inflammatory cytokines. ^[3]
References	[1] https://pubmed.ncbi.nlm.nih.gov/19295546/ [2] https://pubmed.ncbi.nlm.nih.gov/21788946/ [3] https://pubmed.ncbi.nlm.nih.gov/20385788/

Applications

Methods	Biomarkers	PMID
Western blot	p-JAK2 / JAK2 / p-STAT3 / STAT3 p-Src / Src	26625308
Immunofluorescence	p62 / pS6	29138276
Growth inhibition assay	Cell viability	20385788

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT01236638	Completed	Primary Myelofibrosis\|Post-Polycythemia Vera Myelofibrosis\|Post-Essential Thrombocythemia Myelofibrosis	Sierra Oncology LLC - a GSK company	November 2010	Phase 2
NCT00935987	Completed	Primary Myelofibrosis\|Post-Polycythemia Vera Myelofibrosis\|Post-Essential Thrombocythemia Myelofibrosis	Sierra Oncology LLC - a GSK company	November 2009	Phase 1\|Phase 2

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