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47284
Palbociclib
Activators & Inhibitors

Palbociclib #47284

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Western Blotting

Western blot analysis of extracts from MCF7 cells, untreated (-) or treated with Palbociclib (1 μM, 24 hr; +), using Phospho-Rb (Ser807/811) (D20B12) XP® Rabbit mAb #8516 (upper), Rb (D20) Rabbit mAb #9313 (middle), or α-Actinin (D6F6) XP® Rabbit mAb #6487 (lower).

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Structure

Chemical structure of Palbociclib.

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Palbociclib is supplied as a lyophilized powder. For a 2 mM stock, reconstitute 1 mg of powder in 1.1 ml of DMSO. Heating to 37ºC and/or additional vortexing may be required. Working concentrations and length of treatment can vary depending on the desired effect.

Storage:

Store lyophilized at -20ºC, desiccated. In lyophilized form, the chemical is stable for 24 months. Once in solution, store at -20ºC and use within 1 month to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles.

Molecular Weight: 447.5 g/mol

Purity: >98%

Molecular Formula: C24H29N7O2

CAS: 571190-30-2

Solubility: Soluble in DMSO at 2 mg/ml.

Palbociclib, also known as PD 0332991, is a potent and selective inhibitor of cyclin-dependent kinase 4 (Cdk4, IC50 = 11nM) and cyclin-dependent kinase 6 (Cdk6, IC50 = 16nM). Phosphorylation of retinoblastoma protein (Rb) by Cdk4 and Cdk6 leads to G1-S phase advancement, which is an important checkpoint for cell division (1). This regulation of the cell cycle makes the activation and inhibition of Cdk4 and Cdk6 highly researched. Palbociclib has been shown to arrest the proliferation of 5T33MM tumor cells in vivo and ex vivo, and treatment with the compound has increased the survival rate of 5T33MM diseased mice (2).

  1. Fry, D.W. et al. (2004) Mol Cancer Ther 3, 1427-38.
  2. Menu, E. et al. (2008) Cancer Res 68, 5519-23.
For Research Use Only. Not For Use In Diagnostic Procedures.

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XP is a registered trademark of Cell Signaling Technology, Inc.

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47284S
1 mg

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