Enzastaurin

Catalog No.S1055 Batch:S105503

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Technical Data

Formula

C32H29N5O2
Molecular Weight 515.61 CAS No. 170364-57-5
Solubility (25°C)* In vitro DMSO 30 mg/mL (58.18 mM)
Water Insoluble
Ethanol Insoluble
* <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.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

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Biological Activity

Description Enzastaurin is a potent PKCβ selective inhibitor with IC50 of 6 nM in cell-free assays, 6- to 20-fold selectivity against PKCα, PKCγ and PKCε. Phase 3.
Targets
PKCβ [1]
(Cell-free assay)		 PKCα [1]
(Cell-free assay)		 PKCγ [1]
(Cell-free assay)		 PKCε [1]
(Cell-free assay)
6 nM 39 nM 83 nM 110 nM
In vitro Enzastaurin application results in a marked dose-dependent inhibition of growth in all MM cell lines investigated, including MM.1S, MM.1R, RPMI 8226 (RPMI), RPMI-Dox40 (Dox40), NCI-H929, KMS-11, OPM-2, and U266, with IC50 from 0.6-1.6 μM. Enzastaurin direct impacts human tumor cells, inducing apoptosis and suppressing proliferation in cultured tumor cells. Enzastaurin also suppresses the phosphorylation of GSK3βser9, ribosomal protein S6S240/244, and AKTThr308 while having no direct effect on VEGFR phosphorylation. [1] Enzastaurin increases apoptosis in malignant lymphocytes of CTCL. When combined with GSK3 inhibitors, enzastaurin demonstrated an enhancement of cytotoxicity levels. Treatment with a combination of enzastaurin and the GSK3 inhibitor AR-A014418 led to increased levels of β-catenin total protein and β-catenin-mediated transcription. Blocking of β-catenin-mediated transcription or small hairpin RNA (shRNA) knockdown of β-catenin induced the same cytotoxic effects as that of enzastaurin plus AR-A014418. Additionally, treatment with enzastaurin and AR-A014418 decreased the mRNA levels and surface expression of CD44. [2]
In vivo Treatment of xenografts with Enzastaurin and radiation produced greater reductions in density of microvessels than either treatment alone. The decrease in microvessel density corresponded to delayed tumor growth. [3]

Protocol (from reference)

Kinase Assay:

[1]
  • Kinase inhibition assays

    The inhibition of PKCβII, PKCα, PKCε, or PKCγ activity by enzastaurin is determined using a filter plate assay format measuring 33P incorporation into myelin basic protein substrate. Reactions are done in 100 μL reaction volumes in 96-well polystyrene plates with final conditions as follows: 90 mM HEPES (pH 7.5), 0.001% Triton X-100, 4% DMSO, 5 mM MgCl2, 100 μM CaCl2, 0.1 mg/mL phosphatidylserine, 5 μg/mL diacetyl glyerol, 30 μM ATP, 0.005 μCi/μL 33ATP, 0.25 mg/mL myelin basic protein, serial dilutions of enzastaurin (1-2,000 nM), and recombinant human PKCβII, PKCα, PKCε, or PKCγ enzymes (390, 169, 719, or 128 pM, respectively). Reactions are started by addition of the enzyme and incubated at room temperature for 60 minutes. They are then quenched with 10% H3PO4, transferred to multiscreen anionic phosphocellulose 96-well filter plates, incubated for 30 to 90 minutes, filtered and washed with 4 volumes of 0.5% H3PO4 on a vacuum manifold. Scintillation cocktail is added and plates are read on a Microbeta scintillation counter. IC50 values are determined by fitting a three-variable logistic equation to the 10-point dose-response data using ActivityBase 4.0.
Cell Assay:

[1]
  • Cell lines

    HCT116 and U87MG cells

  • Concentrations

    0.3-4 μM

  • Incubation Time

    72 hours

  • Method

    Induction of apoptosis by enzastaurin is measured by nucleosomal fragmentation and terminal deoxynucleotidyl transferase-mediated nick-end labeling (TUNEL) and staining in HCT116 and U87MG cell lines. Briefly, 5 × 103 cells are plated per well in 96-well plates (1% FBS-supplemented media conditions), incubated with or without Enzastaurin for 48 to 72 hours. The absorbance values are normalized to those from control-treated cells to derive a nucleosomal enrichment factor at all concentrations as per the manufacturer's protocol. The concentrations studied ranges from 0.1 to 10 μM. In situ TUNEL staining is assayed with the In situ Cell Death Detection, Fluorescein kit. Cells (7.5 ?104) are plated per well in 6-well plates and incubated 72 hours in 1% FBS-supplemented media ?Enzastaurin. Fluorescein-labeled DNA strand breaks are detected with the BD epics flow cytometer. Ten thousand, single-cell, FITC-staining events are collected for each test.
Animal Study:[1] [3]
  • Animal Models

    Athymic nude mice; Mouse besring human MM tumors

  • Dosages

    75 mg/kg twice daily; 30 mg/kg twice daily

  • Administration

    By gavage

Customer Product Validation

Data from [Arthritis Rheum, 2013, 65, 1022-31]

Data from [Arthritis Rheum, 2013, 65, 1022-31]

Data from [J Biol Chem, 2011, 286, 39760-7]

Data from [Data independently produced by , , Cell Mol Immunol, 2017, 14(2):192-202]

Selleck's Enzastaurin has been cited by 63 publications

PKCβII phosphorylates ACSL4 to amplify lipid peroxidation to induce ferroptosis [ Nat Cell Biol, 2022, 24(1):88-98] PubMed: 35027735
Targeting a splicing-mediated drug resistance mechanism in prostate cancer by inhibiting transcriptional regulation by PKCβ1 [ Oncogene, 2022, 10.1038/s41388-022-02179-z] PubMed: 35087237
Inhibition of IκB Kinase Is a Potential Therapeutic Strategy to Circumvent Resistance to Epidermal Growth Factor Receptor Inhibition in Triple-Negative Breast Cancer Cells [ Cancers (Basel), 2022, 14(21)5215] PubMed: 36358633
Establishment and characterization of immortalized sweat gland myoepithelial cells [ Sci Rep, 2022, 12(1):7] PubMed: 34997030
Amphetamine-induced neurite injury in PC12 cells through inhibiting GAP-43 pathway [ Neurotoxicology, 2022, 93:103-111] PubMed: 36150536
Reversible phosphorylation of cyclin T1 promotes assembly and stability of P-TEFb [ Elife, 2021, 10e68473] PubMed: 34821217
P2X7 Receptor Deficiency Ameliorates STZ-induced Cardiac Damage and Remodeling Through PKCβ and ERK [ Front Cell Dev Biol, 2021, 9:692028] PubMed: 34395424
High-content image-based analysis and proteomic profiling identifies Tau phosphorylation inhibitors in a human iPSC-derived glutamatergic neuronal model of tauopathy [ Sci Rep, 2021, 11(1):17029] PubMed: 34426604
mTORC2 Activation Mediated by Mesenchymal Stem Cell-Secreted Hepatocyte Growth Factors for the Recovery of Lipopolysaccharide-Induced Vascular Endothelial Barrier [ Stem Cells Int, 2021, 2021:9981589] PubMed: 34707661
Identification of Required Host Factors for SARS-CoV-2 Infection in Human Cells [ Cell, 2020, S0092-8674(20)31394-5] PubMed: 33147445

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

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