Plinabulin

Synonyms: NPI-2358

Plinabulin is a vascular disrupting agent (VDA) against tubulin-depolymerizing with IC50 of 9.8~18 nM in tumor cells. Phase 1/2.

Plinabulin Chemical Structure

Plinabulin Chemical Structure

CAS No. 714272-27-2

Purity & Quality Control

Plinabulin Related Products

Signaling Pathway

Biological Activity

Description Plinabulin is a vascular disrupting agent (VDA) against tubulin-depolymerizing with IC50 of 9.8~18 nM in tumor cells. Phase 1/2.
Features Synthetic analog of NPI-2350 and greater potentcy than NPI-2350.
Targets
Tubulin [1]
9.8 nM-18 nM
In vitro
In vitro

NPI-2358 binds to the tubulin and has potent inhibitory to human tumor cell lines which have overexpressed Pgp or reduced nuclear Topo II catalytic activity, with IC50 from 9.8 to 18 nM. NPI-2358 is able to rapidly induce tubulin depolymerization in HUVECs and monolayer permeability even at 20 nM. [1] NPI-2358 induces cell death in MM cells with IC50 of 8-10 nM, which due to trigger early mitotic arrest in MM cells. NPI-2358 also inhibits tubule formation and migration of endothelial as well as MM cells, which leads to disrupt tumor vasculature. NPI-2358 could induces cell death in patient MM (CD138+) cells without effecting viability of normal mononuclear cells. Blockade of JNK abrogates NPI-2358-induced mitotic arrest or MM cell death. [2]

Cell Research Cell lines HT-29, PC-3, DU 145, MDA-MB-231, NCI-H292, Jurkat, MES-SA, MES-SA/Dx5, HL-60, HL-60/MX2.
Concentrations 2 pM - 20 μM
Incubation Time 24 hours.
Method

The adherent cells are plated in 96-well flat-bottomed plates and allowed to attach for 24 hours at 37 °C. HL-60 and HL-60/MX2 cells are plated in 96-well plates on the day of NPI-2358 addition. Serially diluted NPI-2358 is added to cells at concentrations ranging from 2 pM to 20 μM. Cells treated with a final concentration of 0.25% (v/v) DMSO serves as the vehicle control. Cell viability is assessed 48 hours later by measuring the reduction of resazurin with a fluorimeter. The IC50 value is calculated.

In Vivo
In vivo

NPI-2358 (7.5 mg/kg) inhibits tumor growth in human plasmacytoma mouse xenograft models at well-tolerated doses. [2] NPI-2358 induces a time- and dose-dependent decrease in tumour perfusion. NPI-2358 is more sensitive to the KHT sarcoma than the C3H tumour, while radiation response could enhance the antitumor activity in both models. [3]

Animal Research Animal Models CDF1 mice or C3H/Hej mice.
Dosages ~15 mg/kg.
Administration Injected intraperitoneally (i.p.) in a volume of 0.02 mL/g mouse body weight in CDF1 mice and 0.01 mL/g body weight for C3H/Hej mice.
NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT02846792 Terminated
ALK Gene Translocation|EGFR Activating Mutation|Recurrent Non-Small Cell Lung Carcinoma|ROS1 Gene Translocation|Stage IIIB Non-Small Cell Lung Cancer AJCC v7|Stage IV Non-Small Cell Lung Cancer AJCC v7
University of Washington|National Cancer Institute (NCI)
June 14 2017 Phase 1|Phase 2
NCT00630110 Completed
Cancer
Nereus Pharmaceuticals Inc.
February 2008 Phase 1|Phase 2

Chemical Information & Solubility

Molecular Weight 336.39 Formula

C19H20N4O2

CAS No. 714272-27-2 SDF Download Plinabulin SDF
Smiles CC(C)(C)C1=C(N=CN1)C=C2C(=O)NC(=CC3=CC=CC=C3)C(=O)N2
Storage (From the date of receipt)

In vitro
Batch:

DMSO : 54 mg/mL ( (160.52 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.

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