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Sigma-Aldrich

DNA-PK Inhibitor II

The DNA-PK Inhibitor II, also referenced under CAS 154447-35-5, controls the biological activity of DNA-PK. This small molecule/inhibitor is primarily used for Phosphorylation & Dephosphorylation applications.

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Synonym(s):
DNA-PK Inhibitor II, NU7026, DNA-Dependent Protein Kinase Inhibitor II, 2-(Morpholin-4-yl)-benzo[h]chromen-4-one, LY293646
Empirical Formula (Hill Notation):
C17H15NO3
CAS Number:
154447-35-5
Molecular Weight:
281.31
MDL number:
MFCD06798345

Quality Level

100

Assay

≥95% (HPLC)

form

crystalline solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
protect from light

solubility

DMSO: 2 mg/mL
methanol: 700 μg/mL

shipped in

ambient

storage temp.

2-8°C

InChI

1S/C17H15NO3/c19-15-11-16(18-7-9-20-10-8-18)21-17-13-4-2-1-3-12(13)5-6-14(15)17/h1-6,11H,7-10H2

InChI key

KKTZALUTXUZPSN-UHFFFAOYSA-N

General description

A cell-permeable benzochromenone compound that acts as a potent, specific, reversible, and ATP-competitive inhibitor of DNA-PK with an IC50 of 0.23 µM. It is highly selective towards DNA-PK over PI3K-related kinases (IC50 = 13 µM for PI 3-K and >100 µM for ATM and ATR) and has no effect on PARP-1. Inhibits DNA-PK-mediated, but not PARP-1-mediated, cellular DNA DSB (double strand break) repair and PLDR (potentially lethal damage recovery) following IR (ionizing radiation). Shown to sensitize both proliferating and quiescent cells to IR.
A cell-permeable, potent, specific, reversible, and ATP-competitive inhibitor of DNA-PK (IC50 = 230 nM). Reported to be highly selective for DNA-PK compared to PI3 K-related kinases (IC50 = 13 µM for PI 3-K and >100 µM for ATM and ATR). Exhibits no inhibitory effect on PARP-1. Shown to inhibit DNA-PK-mediated, but not PARP-1-mediated, cellular DNA double strand break (DSB) repair and potentially lethal damage recovery (PLDR) following ionizing radiation (IR). Also shown to sensitize both proliferating and quiescent cells to IR.

Biochem/physiol Actions

Cell permeable: yes
Primary Target
DNA-PK
Product competes with ATP.
Reversible: yes
Target IC50: 0.23 µM against DNA-PK

Packaging

Packaged under inert gas

Warning

Toxicity: Carcinogenic / Teratogenic (D)

Reconstitution

Following reconstitution aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Other Notes

Willmore, E., et al. 2004. Blood,103, 4659.
Hollick, J.J., et al. 2003. Bioorg. Med. Chem. Lett.13, 3083.
Veuger, S.J., et al. 2003. Cancer Res.63, 6008.
Vlahos, C.J., et al. 1994. J. Biol. Chem.269, 5241.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

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Sara H Small et al.
Science signaling, 14(714), eaba2611-eaba2611 (2021-12-22)
Cytokine production is a critical component of cell-extrinsic responses to DNA damage and cellular senescence. Here, we demonstrated that expression of the gene encoding interleukin-19 (IL-19) was enhanced by DNA damage through pathways mediated by c-Jun amino-terminal kinase (JNK) and

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