Home Cytoskeletal Signaling HSP (HSP90) inhibitor - Apoptosis related activator HSP990 (NVP-HSP990) For research use only.

HSP990 (NVP-HSP990)

HSP990 (NVP-HSP990) is a novel, potent and selective HSP90 inhibitor for HSP90α/β with IC50 of 0.6 nM/0.8 nM. NVP-HSP990 induces cell cycle arrest and apoptosis.

HSP990 (NVP-HSP990) Chemical Structure

HSP990 (NVP-HSP990) Chemical Structure

CAS No. 934343-74-5

Purity & Quality Control

HSP990 (NVP-HSP990) Related Products

Signaling Pathway

HSP (HSP90) Signaling Pathways

HSP (HSP90) Signaling Pathway

Cell Data

Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
human A2058 cells Cytotoxicity assay Cytotoxicity against human A2058 cells in presence of HSF1 knock down treatment, IC50=0.0052 μM 26164188
human A375 cells Cytotoxicity assay Cytotoxicity against human A375 cells in presence of HSF1 knock down treatment, IC50=0.006 μM 26164188
human GTL16 cells Cytotoxicity assay 72 h Cytotoxicity against human GTL16 cells after 72 hrs by CellTitre-Glo assay, IC50=0.014 μM 25368984
Click to View More Cell Line Experimental Data

Biological Activity

Description HSP990 (NVP-HSP990) is a novel, potent and selective HSP90 inhibitor for HSP90α/β with IC50 of 0.6 nM/0.8 nM. NVP-HSP990 induces cell cycle arrest and apoptosis.
Features NVP-HSP990 is an orally available HSP90 inhibitor and is structurally distinct from other clinical HSP90 inhibitors.
Targets
HSP90α [1]
(Cell-free assay)		 HSP90β [1]
(Cell-free assay)
0.6 nM 0.8 nM
In vitro
In vitro NVP-HSP990 is based on a 2-amino-4-methyl-7,8-dihydropyrido[4,3-d]pyrimidin-5(6H)-one scaffold, which is structurally distinct from other known HSP90 inhibitors. NVP-HSP990 binds to the N-terminal ATP-binding domain of HSP90. NVP-HSP990 exhibits single digit nanomolar IC50 values on three of the HSP90 isoforms (HSP90α, HSP90β, and GRP94) and 320 nM IC50 value on the fourth (TRAP-1), with selectivity against unrelated enzymes, receptors, and kinases. NVP-HSP990 dissociates the HSP90-p23 complex, depleted client protein c-Met, and induced Hsp70 in c-Met amplified GTL-16 gastric tumor cells. NVP-HSP990 potently inhibites the growth of human cell lines and primary patient samples from a variety of tumor types. [1] NVP-HSP990 displays dose- and time-dependent effects on HSP90 client proteins. NVP-HSP990 inhibits Glioma tumor-initiating cells (GIC) proliferation in all GIC lines, with IC50 values ranging approximately between 10 and 500 nM. Olig2 is a functional marker associated with cell proliferation and response to NVP-HSP990, as NVP-HSP990 attenuated cell proliferation in Olig2-high GIC lines. In addition, NVP-HSP990 disrupted cell-cycle control mechanism by decreasing CDK2 and CDK4 and elevating apoptosis-related molecules. [2]
Kinase Assay HSP90 binding, ATPase, and selectivity profiling assays
The potency of HSP90 inhibitors for HSP90α, HSP90β, and Grp94 is determined by AlphaScreen competition binding assays, and activity against TRAP-1 is assessed by an ATPase assay.
Cell Research Cell lines GICs
Concentrations ~1 μM
Incubation Time 7 days
Method

Dissociated GICs are plated at 10 cells/μL in 6-well plates and incubated with various concentrations of NVP-HSP990 for 7 days. Formed tumorspheres are dissociated into single cells and counted with hemocytometer using 0.2% Trypan blue exclusion.
Experimental Result Images Methods Biomarkers Images PMID
Western blot HSP90 / HSP70 EGFR / ErbB2 / ErbB3 / IGF-1R p-Akt / Akt / p-ERK / ERK / pp70S6K / p70S6K / p4EBP1 / 4EBP1 24100469
In Vivo
In vivo NVP-HSP990 exhibits drug-like pharmaceutical and pharmacologic properties with high oral bioavailability. In the GTL-16 xenograft model, a single oral administration of 15 mg/kg of NVP-HSP990 induced sustained downregulation of c-Met and upregulation of Hsp70. In repeat dosing studies, NVP-HSP990 treatment resulted in tumor growth inhibition of GTL-16 and other human tumor xenograft models driven by well-defined oncogenic HSP90 client proteins. [1]
Animal Research Animal Models GTL-16, NCI-H1975, BT474, and MV4;11 tumor xenografted nude and SCID mice models
Dosages 15 mg/kg
Administration Oral
NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT00879905 Completed
Advanced Solid Malignancies
Novartis Pharmaceuticals|Novartis
 May 2009 Phase 1

Chemical Information & Solubility

Molecular Weight 379.39 Formula

C20H18FN5O2
CAS No. 934343-74-5 SDF Download HSP990 (NVP-HSP990) SDF
Smiles CC1=C2C(=NC(=N1)N)CC(NC2=O)C3=C(C=C(C=C3)F)C4=NC(=CC=C4)OC
Storage (From the date of receipt)

In vitro
Batch:

DMSO : 76 mg/mL ( (200.32 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble


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In vivo
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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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