Home TGF-beta/Smad PKC inhibitor Enzastaurin For research use only.

Enzastaurin

Synonyms: LY317615

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.

Enzastaurin Chemical Structure

Enzastaurin Chemical Structure

CAS No. 170364-57-5

Purity & Quality Control

Enzastaurin Related Products

Signaling Pathway

PKC Signaling Pathways

PKC Signaling Pathway

Cell Data

Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
SJ-GBM2 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SJ-GBM2 cells 29435139
A673 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for A673 cells 29435139
NB-EBc1 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB-EBc1 cells 29435139
Saos-2 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Saos-2 cells 29435139
LAN-5 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for LAN-5 cells 29435139
OHS-50 qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for OHS-50 cells 29435139
MG 63 (6-TG R) qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for MG 63 (6-TG R) cells 29435139
Click to View More Cell Line Experimental Data

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
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]
Kinase Assay 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 Research 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. Cells (7.5 ?104) are plated per well in 6-well plates and incubated 72 hours in 1% FBS-supplemented media ?Enzastaurin. labeled DNA strand breaks are detected with the BD epics flow cytometer. Ten thousand, single-cell, FITC-staining events are collected for each test.
Experimental Result Images Methods Biomarkers Images PMID
Western blot p27 / Cyclin D1 / Bcl-2 / Survivin p-ERK / ERK / p-AKT / AKT PKCα / PKCβ / PKCδ / PKCε / PKCθ / p-PKCε / p-PKCθ p-eIF2a / eIF2a / p-ATF2 / ATF2 / CHOP / p21 / ATF6 / IRE1α 22253748
Growth inhibition assay Cell viability 22253748
In Vivo
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]
Animal Research Animal Models Athymic nude mice; Mouse besring human MM tumors
Dosages 75 mg/kg twice daily; 30 mg/kg twice daily
Administration By gavage
NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT03263026 Completed
Diffuse Large B-Cell Lymphoma
Denovo Biopharma LLC
 March 20 2018 Phase 3
NCT01432951 Completed
Solid Tumor|Lymphoma Malignant
Eli Lilly and Company
 November 2011 Phase 1
NCT01388335 Completed
Solid Tumor|Lymphoma Malignant
Eli Lilly and Company
 August 2011 Phase 1
NCT00744991 Completed
Cutaneous T-Cell Lymphoma
Eli Lilly and Company
 September 2008 Phase 2
NCT00709995 Completed
Metastatic Renal Cell Carcinoma
Eli Lilly and Company
 June 30 2008 Phase 2

Chemical Information & Solubility

Molecular Weight 515.61 Formula

C32H29N5O2
CAS No. 170364-57-5 SDF Download Enzastaurin SDF
Smiles CN1C=C(C2=CC=CC=C21)C3=C(C(=O)NC3=O)C4=CN(C5=CC=CC=C54)C6CCN(CC6)CC7=CC=CC=N7
Storage (From the date of receipt)

In vitro
Batch:

DMSO : 14 mg/mL ( (27.15 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble


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Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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