Revision 1

#2194Store at -20C

1 mg

Cell Signaling Technology

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Support: 877-678-TECH (8324)

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

Background

MG-132 is a potent proteasome and calpain inhibitor. Research studies have shown that MG-132 prevents degradation of the proteasome substrates SucLLVY-MCA and ZLLL-MCA with an IC50 of 850 nM and 100 nM, respectively, as well as inhibits casein-degrading activity of m-calpain with an IC50 of 1.25 µM (1). Investigators have demonstrated that MG-132 inhibits TNF-α-induced NF-κB activation and IL-8 release in A549 cells (2). Proteasome inhibition with MG-132 prevents degradation of short-lived proteins, which correlates with increased expression of HSP and ER chaperone proteins (3). MG-132 induces apoptosis in Hep G2 cells in a time- and dose-dependent manner (4). Proteasome inhibitors like MG-132 are important research tools for studying cellular degradation of the ubiquitin-proteasome pathway.

  1. Tsubuki, S. et al. (1996) J Biochem 119, 572-6.
  2. Fiedler, M.A. et al. (1998) Am J Respir Cell Mol Biol 19, 259-68.
  3. Bush, K.T. et al. (1997) J Biol Chem 272, 9086-92.
  4. Emanuele, S. et al. (2002) Int J Oncol 21, 857-65.

Molecular Formula

C26H41N3O5

Molecular Weight

475.6 g/mol

Purity

>98%

CAS

133407-82-6

Solubility

Soluble in DMSO, DMF and EtOH at 45mg/ml.

Storage

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

Directions for Use

MG-132 is supplied as a lyophilized powder. For a 10 mM stock, reconstitute the 1 mg in 210.3 µl DMSO. Working concentrations and length of treatments vary depending on the desired effect, but it is typically used at 5-50 µM for 1-24 hours. Soluble in DMSO or EtOH.

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.
    All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

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    Revision 1
    #2194

    MG-132

    MG-132: Image 1 Expand Image
    使用 Phospho-Cyclin D1 (Thr286) (D29B3) XP® Rabbit mAb #3300 对未经处理 (-) 或已经 MG-132(10 μM,4 小时;+)处理的 HT-1080 细胞的提取物进行蛋白质印迹分析。
    MG-132: Image 2 Expand Image
    使用 Ubiquitin (P4D1) Mouse mAb #3936 对未经处理 (-) 或已经 MG-132(50 µM,90 分钟;+)处理的 293 和 HeLa 细胞的提取物进行蛋白质印迹分析。
    MG-132: Image 3 Expand Image
    MG-132 的化学结构。