Staurosporine

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Technical Data

Molecular Weight 466.53 Storage powder
Formula

C28H26N4O3

in solvent
CAS No. 62996-74-1 Synonyms N/A
Solubility (25°C) * In vitro DMSO 4 mg/mL (8.57 mM)
Water Insoluble
Ethanol Insoluble
In vivo
* <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.
Chemical Name 9,13-Epoxy-1H,9H-diindolo[1,2,3-gh:3',2',1'-lm]pyrrolo[3,4-j][1,7]benzodiazonin-1-one, 2,3,10,11,12,13-hexahydro-10-methoxy-9-methyl-11-(methylamino)-, [9S-(9α,10β,11β,13α)]-

Biological Activity

Description Staurosporine is a potent PKC inhibitor for PKCα, PKCγ and PKCη with IC50 of 2 nM, 5 nM and 4 nM, less potent to PKCδ (20 nM), PKCε (73 nM) and little active to PKCζ (1086 nM) in cell-free assays. Also shows inhibitory activities on other kinases, such as PKA, PKG, S6K, CaMKII, etc. Phase 3.
Targets
PKCα [1]
(Cell-free assay)
c-Fgr [2]
(Cell-free assay)
phosphorylase kinase [2]
(Cell-free assay)
PKCη [1]
(Cell-free assay)
PKCγ [1]
(Cell-free assay)
2 nM 2 nM 3 nM 4 nM 5 nM
In vitro Staurosporine, a microbial alkaloid, significantly inhibits protein kinase C from rat brain with IC50 of 2.7 nM. Staurosporine displays strong inhibitory effect against HeLa S3 cells with IC50 of 4 nM. [1] Staurosporine also inhibits a variety of other protein kinases, including PKA, PKG, phosphorylase kinase, S6 kinase, Myosin light chain kinase (MLCK), CAM PKII, cdc2, v-Src, Lyn, c-Fgr, and Syk with IC50 of 15 nM, 18 nM, 3 nM, 5 nM, 21 nM, 20 nM, 9 nM, 6 nM, 20 nM, 2 nM, and 16 nM, respectively. [2] Staurosporine (1 μM) induces >90% apoptosis in PC12 cells. Consistently, Staurosporine treatment induces a rapid and prolonged elevation of intracellular free calcium levels [Ca2+]i, accumulation of mitochondrial reactive oxygen species (ROS), and subsequent mitochondrial dysfunction. [3] The apoptosis of MCF7 cells induced by Staurosporine can be enhanced by the expression of functional caspase-3 via caspase-8 activation and Bid cleavage. [4] Staurosporine treatment at 1 μM only partially inhibits IL-3-stimulated Bcl2 phosphorylation but completely blocks PKC-mediated Bcl2 phosphorylation. [5] Staurosporine induces apoptosis of human foreskin fibroblasts AG-1518, depending on the lysosomal cathepsins D mediated cytochrome c release and caspase activation. [6] In addition to activating the classical mitochondrial apoptosis pathway, Staurosporine triggers a novel intrinsic apoptosis pathway, relying on the activation of caspase-9 in the absence of Apaf-1. [7]
In vivo In the gerbil and rat ischemia models, Staurosporine pretreatment (0.1-10 ng) before ischemia prevents neuronal damage in a dose-dependent manner, suggesting the involvement of PKC in CAl pyramidal cell death after ischemia. [8]
Features  

Protocol (Only for Reference)

Kinase Assay:

[1]

Enzyme assay and binding assay Protein kinase C is assayed in a reaction mixture (0.25 mL) containing 5 μmol of Tris/HCl, pH 7.5, 2.5 μmol of magnesium acetate, 50 μg of histone II S, 20 μg of phosphatidylserine, 0.88 μg of diolein, 125 nmol of CaCl2, 1.25 nmol of [γ-32]ATP (5-10 × 104 cpm/nmol) and 5 μg of partially purified enzyme. The binding of [3H]PDBu to protein kinase C is determined: Reaction mixture (200 μL contained 4 μmo1 of Tris/malate, pH 6.8, 20 μmol of KCl, 30 nmol of CaC12, 20 μg of phosphatidylserine, 5 μg of partially purified protein kinase C, 0.5% (final concentration) of DMSO,10 pmol of [3H]PDBu (l-3 × 104 cpm/pmol) and 10 μL of various amounts of Staurosporine.

Cell Assay:

[3]

Cell lines PC12
Concentrations Dissolved in DMSO, final concentration 1 μM
Incubation Time ~32 hours
Method

Cells are exposed to Staurosporine for ~32 hours. Cells are fixed in 4% paraformaldehyde and stained with the DNA-binding dye Hoechst 33342. Cells are visualized under epifluorescence illumination, and the percentage of apoptotic cells (cells with condensed and fragmented DNA) is determined.

Animal Study:

[8]

Animal Models Male Mongolian gerbils or male Wistar rats subjected to transient ischemia
Formulation Dissolved in DMSO, and diluted in saline
Dosages ~10 ng
Administration Stereotaxically administered into the bilateral CAl subfield of the hippocampus
 

References

Customer Product Validation

Data from [Data independently produced by PLoS One, 2012, 7(6), e39679]

Intracellular concentration of HSF1-phosphoserine 326, total HSF1, S6 kinase-phosphothreonine-389, total S6 kinase and β-actin, without or with heat shock in HeLa cells pretreated with mTOR inhibitors rapamycin (30 nM) and KU0063794 (2 uM) and kinase inhibitor staurosporine (100 nM) for 2 hr. Relative levels of HSF1-phosphoserine 326 in cells after the various treatments were determined by densitometric analysis of X-ray films, normalized to untreated cells (lane 1), and are indicated below the representation of the immunoblots.

Data from [J Biomol Screen, 2013, 18(4), 388-99]

Staurosporine has been referenced in 8 publications.

PLEASE KEEP THE PRODUCT UNDER -20°C FOR LONG-TERM STORAGE.

NOT FOR HUMAN, VETERINARY DIAGNOSTIC OR THERAPEUTIC USE.

Specific storage and handling information for each product is indicated on the product datasheet. Most Selleck products are stable under the recommended conditions. Products are sometimes shipped at a temperature that differs from the recommended storage temperature. Short-term storage of many products are stable in the short-term at temperatures that differ from that required for long-term storage.
We ensure that the product is shipped under conditions that will maintain the quality of the reagents. Upon receipt of the product, follow the storage recommendations on the product data sheet.

Chemical Structure

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