Chk2 Inhibitor II (BML-277)

For research use only.

Catalog No.S8632

4 publications

Chk2 Inhibitor II (BML-277) Chemical Structure

CAS No. 516480-79-8

Chk2 Inhibitor II (BML-277) is an ATP-competitive inhibitor of Chk2 with IC50 of 15 nM. It is 1000-fold more selective toward Chk2 serine/threonine kinase than for Chk1 and Cdk1/B kinases. Chk2 Inhibitor II (BML-277) dose dependently protects human CD4(+) and CD8(+) T-cells from apoptosis due to ionizing radiation.

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Description Chk2 Inhibitor II (BML-277) is an ATP-competitive inhibitor of Chk2 with IC50 of 15 nM. It is 1000-fold more selective toward Chk2 serine/threonine kinase than for Chk1 and Cdk1/B kinases. Chk2 Inhibitor II (BML-277) dose dependently protects human CD4(+) and CD8(+) T-cells from apoptosis due to ionizing radiation.
Targets
Chk2 [1]
(Cell-free assay)
15 nM
In vitro

The CHK2 Inhibitor II shows 1,000-fold greater selectivity for the CHK2 serine/threonine kinase than for the Cdk1/B and CK1 kinases and was first discovered to be a potent, selective small molecule showing radioprotection towards human T cells. Different doses of CHK2 inhibitor II specifically inhibit CHK2 phosphorylation at Thr68 at different time course, but not CHK1 phosphorylation. Treatment with combination of CHK2 inhibitor II and ERK inhibitor results in substantially more apoptosis compared with treatment of either drug alone[2].

In vivo SUDHL6 DLBCL xenografts mice treated every other day intraperitoneally with either vehicle, ERK inhibitor (5 mg kg−1), CHK2 inhibitor II (1 mg kg−1), or both ERK inhibitor and CHK2 inhibitor II for 20 days show no lethal toxicity, significant weight loss or any gross abnormalities. Both 5 mg/kg ERK inhibitor and 1 mg/kg CHK2 inhibitor II modestly inhibit tumour growth but combined treatment with ERK inhibitor and CHK2 inhibitor II results in a statistically significant suppression of tumour growth[2].

Protocol

Cell Research:

[2]

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  • Cell lines: human DLBCLs cells
  • Concentrations: 5 μM
  • Incubation Time: 48 h
  • Method:

    Single-cell suspensions are obtained from lymph node biopsies of patients diagnosed with DLBCL and are treated with DMSO, ERK inhibitor and CHK2 inhibitor II alone or in combination for 48 h after which the percentage of apoptotic cells is determined by Annexin V analysis.


    (Only for Reference)
Animal Research:

[2]

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  • Animal Models: SUDHL6 DLBCL xenografts (SCID mice)
  • Dosages: 1 mg/kg
  • Administration: i.p.
    (Only for Reference)

Solubility (25°C)

In vitro DMSO 72 mg/mL (197.91 mM)
Water Insoluble
Ethanol ''21 mg/mL

* 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.

Chemical Information

Molecular Weight 363.80
Formula

C20H14ClN3O2

CAS No. 516480-79-8
Storage powder
in solvent
Synonyms N/A
Smiles C1=CC(=CC=C1C2=NC3=C(N2)C=C(C=C3)C(=O)N)OC4=CC=C(C=C4)Cl

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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.

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID