| Identification | More | [Name]
PD 0332991 HCl | [CAS]
827022-32-2 | [Synonyms]
PD 0332991 HCl
Palbociclib HCl
PD-0332991 (Palbociclib)
PD 0332991 hydrochloride
Palbociclib (hydrochloride)
Palbociclib (PD-0332991) HCl
6-acetyl-8-cyclopentyl-5-Methyl-2-(5-(piperazin-1-yl)pyridin-2-ylaMino)pyrido[2,3-d]pyriMidin-7(8H)-one hydrochloride
6-Acetyl-8-cyclopentyl-5-methyl-2-[[5-(1-piperazinyl)-2-pyridinyl]amino]pyrido[2,3-d]pyrimidin-7(8H)-one hydrochloride Palbociclib (PD-0332991) HCl | [EINECS(EC#)]
1592732-453-0 | [Molecular Formula]
C24H30ClN7O2 | [MDL Number]
MFCD22420809 | [MOL File]
827022-32-2.mol | [Molecular Weight]
483.994 |
| Chemical Properties | Back Directory | [storage temp. ]
= -70C | [solubility ]
≥14.48 mg/mL in H2O; ≥2.42 mg/mL in DMSO; ≥2.79 mg/mL in EtOH with gentle warming and ultrasonic | [form ]
Yellow liquid | [color ]
Light yellow to yellow |
| Hazard Information | Back Directory | [Description]
PD 0332991 is an orally active, selective inhibitor of the cyclin D kinases Cdk4 (IC50 = 11 nM) and Cdk6 (IC50= 16 nM) with no activity against a panel of 36 additional protein kinases.1 It has been reported to have antiproliferative activity against retinoblastoma-positive tumor cells, blocking retinoblastoma phosphorylation and inducing G1 arrest at nanomolar concentrations.1 PD 0332991 can inhibit the growth of certain ER-positive or HER2-amplified breast cancer cells (IC50s as low as 4 nM) and demonstrates synergy with tamoxifen (Item No. 13258) and trastuzumab, respectively.2 PD 0332991 inhibition of Cdk4 activity has been used to demonstrate a role for insulin-activated cyclinD1-Cdk4 signaling in the control of glucose metabolism that is independent of cell cycle progression.3 | [General Description]
A cell-permeable, orally available and brain permeant, non-toxic pyridopyrimidinone compound that acts as a potent, selective, reversible, ATP competitive inhibitor of Cdk4 and Cdk6 (IC50 = 11, 9, and 15 nM for Cdk4/D1, Cdk4/D3 and Cdk6/D2, respectively). Hence, it reduces retinoblastoma protein phosphorylation at Ser780/Ser795 (IC50 = 66 nM in MDA-435 cells) and arrests cell cycle at G1 phase. Acts as a cytostatic agent, but does induce apoptotic cell death when used alone. However, it potentiates the cytotoxicity of dexamethasone (>Cat. No. 265005), bortezomib (>Cat. No. 504314), and tamoxifen (Cat. No. 579000) in estrogen receptor (ER)-positive cell lines. Exhibits only a trivial inhibitory activity towards Cdk2/E2, Cdk2/A, Cdk1/B and Cdk5/p25 in a 36-kinase panel (IC50 >10 μM). Improves endoderm differentiation of late G1-human embryonic stem cells expressing Smad2 or Smad3 (~ 750 nM) and further enhances endoderm differentiation into hepatic and pancreatic progenitor cells. Shown to regress the growth of human breast tumor xenografts in murine models (~150 mg/kg, p.o., daily). | [Biochem/physiol Actions]
Cell permeable: yes | [target]
CDK4/cyclin D1 | [storage]
Store at -20°C | [References]
[1] ivan diaz-padilla, lillian l. siu and ignacio duran. cyclin-dependent kinase inhibitors as potential targeted anticancer agents. invest new drugs. 2009, 27: 586–594.
[2] richard s finn, judy dering, dylan conklin, ondrej kalous, david j cohen, amrita j desai, charles ginther, mohammad atefi, isan chen, camilla fowst, gerret los and dennis j slamon. pd 0332991, a selective cyclin d kinase 4/6 inhibitor, preferentially inhibits proliferation of luminal estrogen receptor-positive human breast cancer cell lines in vitro. breast cancer research. 2009, 11: r77. |
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