For research use only.

Catalog No.S7248 Synonyms: Ro5203280

4 publications

Ro3280 Chemical Structure

CAS No. 1062243-51-9

RO3280 (Ro5203280) is a potent, highly selective inhibitor of Polo-like kinase 1 (PLK1) with IC50 of 3 nM.

Selleck's Ro3280 has been cited by 4 publications

1 Customer Review

  • RO3280 promotes the formation of multinucleated cells in bladder cancer cell lines. (A) Representative images of cells stained with DAPI (blue) and alpha‐tubulin (red) were examined under a fluorescence microscope (magnification 400×). Enlarged cells containing multiple evenly stained nuclei (multinucleated cells) are characteristic of mitotic catastrophe (white arrow). (B) Quantification of the percentage of multinucleated cells based on fluorescence microscopy analysis (the data are presented as the mean ± S.E.M., *P < 0.05).

    J Cell Mol Med, 2017, 21(4):758-767. Ro3280 purchased from Selleck.

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Biological Activity

Description RO3280 (Ro5203280) is a potent, highly selective inhibitor of Polo-like kinase 1 (PLK1) with IC50 of 3 nM.
Features A selective PLK1 inhibitor. Demonstrates greater potency than BI2536. Potential use in nasopharyngeal carcinomas.
PLK1 [1]
3 nM
In vitro

RO3280 shows the strong anti-proliferative activity against lung cancer cell line H82, colorectal cancer cell HT-29, breast cancer cell MDA-MB-468, prostate cancer cell PC3 and skin cancer cell A375 with IC50s of 5, 10, 19, 12 and 70 nM, respectively. [1]

In vivo RO3280 displays robust antitumor activity in nude mouse implanted with HT-29 human colorectal tumors ranging from 72% tumor growth inhibition when dosed once weekly at 40 mg/kg, to complete tumor regression when dosed more frequently.. [1]


Solubility (25°C)

In vitro DMSO 100 mg/mL (183.95 mM)
Ethanol 100 mg/mL (183.95 mM)
Water Insoluble

* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 543.61


CAS No. 1062243-51-9
Storage powder
in solvent
Synonyms Ro5203280
Smiles CN1CCC(CC1)NC(=O)C2=CC(=C(C=C2)NC3=NC=C4C(=N3)N(CC(C(=O)N4C)(F)F)C5CCCC5)OC

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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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PLK Signaling Pathway Map

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID