Momelotinib (CYT387)

Catalog No.S2219 Batch:S221904

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Technical Data

Formula

C23H22N6O2

Molecular Weight 414.46 CAS No. 1056634-68-4
Solubility (25°C)* In vitro DMSO 83 mg/mL (200.26 mM)
Water Insoluble
Ethanol Insoluble
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

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Biological Activity

Description 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. Momelotinib (CYT387) induces apoptosis and autophagy. Phase 3.
Targets
JAK1 [1]
(Cell-free assay)
JAK2 [1]
(Cell-free assay)
JAK3 [1]
(Cell-free assay)
11 nM 18 nM 155 nM
In vitro CYT387 inhibits the proliferation of parental Ba/F3 cells (Ba/F3-wt) stimulated by IL-3 with IC50 of 1400 nM. Furthermore, CYT387 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, CYT387 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 CYT387 inhibits PI3K/AKT and Ras/MAPK signaling induced by IL-6 and IGF-1. Moreover, CYT387 induces apoptosis as a single agent and synergizes with the conventional anti-MM therapies bortezomib and melphalan in primary multiple myeloma (MM) cells. [2]
In vivo In a murine MPN model, CYT387 normalizes white cell counts, hematocrit, spleen size, and restores physiologic levels of inflammatory cytokines. [3]

Protocol (from reference)

Kinase Assay:[1]
  • Cell-free kinase activity assays

    Glutathione-S-transferase (GST)-tagged JAK kinase domains expressed in insect cells are purified before use in a peptide substrate phosphorylation assay. Assays are carried out in 384-well optiplates using an Alphascreen Protein Tyrosine Kinase P100 detection kit and a PerkinElmer Fusion Alpha instrument.

Cell Assay:[1]
  • Cell lines

    Ba/F3, Ba/F3-JAK2V617F and Ba/F3-MPLW515L cells

  • Concentrations

    0 to 10 μM

  • Incubation Time

    72 hours

  • Method

    Ba/F3 cells expressing JAK2V617F (Ba/F3-JAK2V617F) and MPLW515L (Ba/F3-MPLW515L) mutants, as well as CHRF-288-11 (JAK2T875N) and CMK (JAK3A572V) cells are used. The TEL/JAK2 and TEL/JAK3 fusions are generated and introduced into Ba/F3 murine cells. The TEL/JAK2- or TEL/JAK3-transfected cells are cultured in Dulbecco's modified Eagle's medium (DMEM) containing 10% fetal calf serum (FCS). Ba/F3 wild-type cells are cultured in RPMI containing 10% FCS supplemented with 5 ng/mL murine IL-3. Proliferation is measured using the Alamar Blue assay after incubating for 72 hours at 37 °C with 5% CO2

Animal Study:[3]
  • Animal Models

    Balb/c mice are transplanted with bone marrow transduced with a JAK2V617F retrovirus.

  • Dosages

    ≤50 mg/kg

  • Administration

    Administered via p.o.

Customer Product Validation

Data from [Data independently produced by J Clin Invest, 2014, 10.1172/JCI69094]

, 2014, Dr. Claude Haan and Catherine Rolvering from University of Luxembourg

Data from [Blood, 2012, 120(19), 4093-103]

Data from [Data independently produced by , , Leukemia, 2018, doi:10.1038/s41375-018-0169-y]

Selleck's Momelotinib (CYT387) has been cited by 48 publications

A panel of janus kinase inhibitors identified with anti-inflammatory effects protect mice from lethal influenza virus infection [ Antimicrob Agents Chemother, 2024, 68(4):e0135023.] PubMed: 38470034
AXL-initiated paracrine activation of pSTAT3 enhances mesenchymal and vasculogenic supportive features of tumor-associated macrophages [ Cell Rep, 2023, 42(9):113067] PubMed: 37659081
Systematic screening identifies ABCG2 as critical factor underlying synergy of kinase inhibitors with transcriptional CDK inhibitors [ Breast Cancer Res, 2023, 25(1):51] PubMed: 37147730
Surgical Reconstruction of Stage 3 and 4 Pressure Injuries: A Literature Review and Proposed Algorithm from an Interprofessional Working Group [ Adv Skin Wound Care, 2023, 36(5):249-258] PubMed: 37079788
Integrative analysis of drug response and clinical outcome in acute myeloid leukemia [ Cancer Cell, 2022, S1535-6108(22)00312-9] PubMed: 35868306
IRF7 expression correlates with HIV latency reversal upon specific blockade of immune activation [ Front Immunol, 2022, 13:1001068] PubMed: 36131914
Comprehensive drug response profiling and pan-omic analysis identified therapeutic candidates and prognostic biomarkers for Asian cholangiocarcinoma [ iScience, 2022, 25(10):105182] PubMed: 36248745
A Gene Co-Expression Network-Based Drug Repositioning Approach Identifies Candidates for Treatment of Hepatocellular Carcinoma [ Cancers (Basel), 2022, 14(6)1573] PubMed: 35326724
STAT3 in tumor fibroblasts promotes an immunosuppressive microenvironment in pancreatic cancer [ Life Sci Alliance, 2022, 5(11)e202201460] PubMed: 35803738
Dietary suppression of MHC class II expression in intestinal epithelial cells enhances intestinal tumorigenesis [ Cell Stem Cell, 2021, S1934-5909(21)00344-1] PubMed: 34529935

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

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