CCT245737 (SRA737)

Catalog No.S8253 Batch:S825302

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Technical Data

Formula

C16H16F3N7O
Molecular Weight 379.34 CAS No. 1489389-18-5
Solubility (25°C)* In vitro DMSO 76 mg/mL (200.34 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 CCT245737 (SRA737) is an orally active CHK1 inhibitor with The IC50 of 1.4 nM. It exhibits >1,000-fold selectivity against CHK2 and CDK1.
Targets
Chk1 [1]
(Cell-free assay)
1.4 nM
In vitro CCT245737 is a potent inhibitor of recombinant human CHK1 with IC50 of 1.4±0.3 nM (mean±SD, n = 3, EZ Reader II assay). There is > 1,000-fold selectivity for CHK1 versus the functionally important kinases CDK1 and CHK2 (IC50=1.26-2.44 and 9.03 μM, respectively), and at least a 90-fold selectivity against cross-reacting kinases such as ERK8, PKD1, RSK1 and 2. CCT245737 potently inhibits cellular CHK1 activity (IC50 30-220nM) and enhances gemcitabine and SN38 cytotoxicity in multiple human tumor cell lines and human tumor xenograft models. It can abrogate an etoposide-induced G2/M arrest. CCT245737 has high cell permeability, as measured by transport across a CaCo2 cell monolayer[1].
In vivo Mouse oral bioavailability is complete (100%) with extensive tumor exposure. CCT245737 shows significant single-agent activity against a MYC-driven mouse model of B-cell lymphoma. An i.v. dose of 10mg/kg CCT245737 into BALB/c mice gives a peak plasma concentration of 4μmol/L, with a half-life of 2.86h, an AUC0-∞ of 9.96μmol.h/L, a plasma clearance of 2.1L/h/kg and a large volume of distribution (0.19L). The equivalent oral dose gave an almost identical profile with an AUC0-∞ of 10.4μmol.h/L showing complete oral bioavailability (F = 105%). In a word, CCT245737 shows complete oral bioavailability with linear pharmacokinetics and high tumor/plasma ratios consistent with extensive tumor exposure. Adequate CCT245737 tumor drug exposure takes a significant antitumor activity[1].

Protocol (from reference)

Cell Assay:[1]
  • Cell lines

    The colon tumor cell lines HT29 and SW620, the pancreatic cancer cell line MiaPaCa-2 and the non-small cell lung cancer Calu6 cell line

  • Concentrations

    --

  • Incubation Time

    96 h

  • Method

    Cytotoxicity is determined as the drug concentration that gave 50% inhibition of tumor cell proliferation (GI50) using a 96h (i.e. 4-doublings) Sulforhodamine B (SRB) assay. Inhibition of intracellular CHK1 activity is measured using a cell based ELISA for the abrogation of an etoposide induced G2 checkpoint (mitosis induction assay, MIA).
Animal Study:[1]
  • Animal Models

    BALB/c mice

  • Dosages

    10mg/kg(i.v.); 150mg/kg(p.o.)

  • Administration

    i.v. or p.o. administration

Selleck's CCT245737 (SRA737) has been cited by 7 publications

Cancer-associated FBXW7 loss is synthetic lethal with pharmacological targeting of CDC7 [ Mol Oncol, 2023, 10.1002/1878-0261.13537] PubMed: 37866880
Regulation of CHK1 inhibitor resistance by a c-Rel and USP1 dependent pathway [ Biochem J, 2022, 479(19):2063-2086] PubMed: 36240066
Translational evidence for RRM2 as a prognostic biomarker and therapeutic target in Ewing sarcoma [ Mol Cancer, 2021, 20(1):97] PubMed: 34315482
CHK1 inhibition exacerbates replication stress induced by IGF blockade [ Oncogene, 2021, 10.1038/s41388-021-02080-1] PubMed: 34773074
Inhibition of Nuclear Pore Complex Formation Selectively Induces Cancer Cell Death [ Cancer Discov, 2020, CD-20-0581] PubMed: 32988961
Small Molecule Inhibitors and a Kinase-Dead Expressing Mouse Model Demonstrate That the Kinase Activity of Chk1 Is Essential for Mouse Embryos and Cancer Cells [ Life Sci Alliance, 2020, 3(8):e202000671] PubMed: 32571801
Checkpoint kinase-1 inhibition and etoposide exhibit a strong synergistic anticancer effect on chronic myeloid leukemia cell line K562 by impairing homologous recombination DNA damage repair [ Oncol Rep, 2020, 44(5):2152-2164] PubMed: 32901871

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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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