Revision 1

#83346Store at -20C

5 mg

Cell Signaling Technology

Orders: 877-616-CELL (2355) [email protected]

Support: 877-678-TECH (8324)

Web: [email protected] cellsignal.com

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For Research Use Only. Not for Use in Diagnostic Procedures.

Background

KU-55933 is a potent and selective ATP-competitive inhibitor of ATM kinase (IC50 = 13 nM and Ki = 2.2 nM). This small molecule has been shown to sensitize cancer cells to ionizing radiation and chemotherapeutic agents (1). Treating senescent cancer cells (MCF7, A549, and HCT 116) with KU-55933 results in decreased viability and cell death (2). KU-55933 has neuroprotective capabilities by preventing damage caused by oxidative stress (3).

  1. Hickson, I. et al. (2004) Cancer Res 64, 9152-9.
  2. Crescenzi, E. et al. (2008) Clin Cancer Res 14, 1877-87.
  3. Chwastek, J. et al. (2017) Int J Biochem Cell Biol 87, 38-53.

Molecular Formula

C21H17NO3S2

Molecular Weight

395.5 g/mol

Purity

>98%

CAS

587871-26-9

Solubility

Soluble in DMSO at 40 mg/ml or ethanol at 20 mg/ml.

Storage

Store lyophilized at -20ºC, desiccated. In lyophilized form, the chemical is stable for 24 months. Once in solution, store at -20ºC and use within 1 month to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles.

Directions for Use

KU-55933 is supplied as a lyophilized powder. For a 10 mM stock, reconstitute 5 mg of powder in 1.26 ml of DMSO. Working concentrations and length of treatment can vary depending on the desired effect.

Background References

    Cross-Reactivity Key

    H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

    Trademarks and Patents

    Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
    XP is a registered trademark of Cell Signaling Technology, Inc.
    All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

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    Revision 1
    #83346

    KU-55933

    KU-55933: Image 1 Expand Image
    使用 Phospho-Chk2 (Thr68) (C13C1) Rabbit mAb #2197(上图)、Chk2 (D9C6) XP® Rabbit mAb #6334(中图)和 β-Actin (D6A8) Rabbit mAb #8457(下图)对未经处理 (-) 或经过 Doxorubicin #5927(0.5 μM,24 小时;+)处理且无论是否经过 KU-55933(10 μM,1 小时;+)预处理的 HCT 116 细胞进行蛋白质印迹分析。
    KU-55933: Image 2 Expand Image
    KU-55933 的化学结构。