Home Cell Cycle CDK inhibitor - AMPK inhibitor - PDGFR inhibitor - FGFR inhibitor - c-RET inhibitor - Src inhibitor ON123300 For research use only.

ON123300

ON123300 is a potent and multi-targeted kinase inhibitor with IC50 of 3.9 nM, 5 nM, 26 nM, 26 nM, 9.2 nM and 11nM for CDK4, Ark5/NUAK1, PDGFRβ, FGFR1, RET (c-RET), and Fyn, respectively.

ON123300 Chemical Structure

ON123300 Chemical Structure

CAS No. 1357470-29-1

Purity & Quality Control

ON123300 Related Products

Signaling Pathway

CDK Signaling Pathways

CDK Signaling Pathway

Biological Activity

Description ON123300 is a potent and multi-targeted kinase inhibitor with IC50 of 3.9 nM, 5 nM, 26 nM, 26 nM, 9.2 nM and 11nM for CDK4, Ark5/NUAK1, PDGFRβ, FGFR1, RET (c-RET), and Fyn, respectively.
Targets
CDK4/CyclinD1 [3]
(Cell-free assay)		 RET [1]
(Cell-free assay)		 CDK6/CyclinD1 [3]
(Cell-free assay)		 Fyn [1]
(Cell-free assay)		 PDGFRβ [3]
(Cell-free assay)		 Click to View More Targets
3.87 nM 9.2 nM 9.82 nM 11 nM 26 nM
In vitro
In vitro

ON123300 inhibits U87 glioma cell proliferation with an IC50 3.4±0.1 μmol/L and reduces phosphorylation of Akt, yet it also unexpectedly induces Erk activation, both in a dose- and time-dependent manner that subsequently is attributed to relieving Akt mediated C-Raf S259 inactivation and activating a p70S6K-initiated PI3K-negative feedback loop[1]. ON123300 also inhibits CDK4/6 and PI3K-δ and exhibits potent activity against mantle cell lymphomas (MCLs). ON123300 is a potent inhibitor of CDK4, with an IC50 of 3.8 nM, with little inhibitory activity against CDKs 1,2,5 and 8. MCL cell lines treated with ON123300 accumulate in the G1 phase at lower concentrations (0.1-1.0μM), at higher concentrations of the compound, a large proportion of the cells progress through the S and G2/M phases of the cell cycle and eventually accumulate in the sub-G1 phase, suggesting an induction of apoptosis. ON123300 also inhibits the phosphorylation of pRb and p130 in a dose-dependent manner. ON123300 treatment results in inhibition of FOXO1 phosphorylation, a target of mTOR[3].
Cell Research Cell lines U87 glioma cells
Concentrations --
Incubation Time 72 h
Method

The cytotoxicity of ON123300 is determined using a colorimetric sulforhodamine B (SRB)-based assay. Suspensions of glioma cells (100 mL containing 2×103 cells) are seeded in 96-well plates and allowed to attach to the surface by overnight incubation. The cells are then treated with increasing concentrations of ON123300 for 72 hour. At the end of the treatment, cells are fixed with 10% (v/v) trichloroacetic acid (TCA) and stained with 0.4% SRB. The optical densities are measured at a wavelength of 570 nm. 
In Vivo
In vivo

In a preclinical brain tumor model (U87MG), ON123300 shows high brain and brain tumor accumulation. Consistent with the in vitro studies, single agent ON123300 causes a dose-dependent suppression of phosphorylation of Akt as well as activation of Erk in brain tumors[1]. ON123300 is highly bound (99.4%) to plasma proteins in mice and rapidly penetrates into brain. It has proficient BBB penetration and accumulates in normal brain[2]. The pharmacokinetic profiles of plasma ON123300 concentration are multiexponential and overall declines fairly rapidly with terminal elimination half-lives of 1.5 hours[1]. Mouse xenograft assays show a strong inhibition of MCL tumor growth in ON123300-treated animals. Safety studies in mice suggest that ON123300 is orally bio-available and is minimally toxic when administered orally or intraperitoneally[3].
Animal Research Animal Models NIH Swiss nude mice
Dosages 5 and 25 mg/kg
Administration i.v.
NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT06351644 Not yet recruiting
Relapsed and/or Refractory Multiple Myeloma
Adriana Rossi|Icahn School of Medicine at Mount Sinai
 June 3 2024 Phase 1|Phase 2
NCT04739293 Recruiting
Solid Tumors Adult
Traws Pharma Inc.
 May 13 2021 Phase 1

Chemical Information & Solubility

Molecular Weight 429.52 Formula

C24H27N7O
CAS No. 1357470-29-1 SDF Download ON123300 SDF
Smiles CN1CCN(CC1)C2=CC=C(C=C2)NC3=NC=C4C=C(C(=O)N(C4=N3)C5CCCC5)C#N
Storage (From the date of receipt)

In vitro
Batch:

DMSO : 29 mg/mL ( (67.51 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble


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In vivo
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