Journal of Cytology
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Year : 2012  |  Volume : 29  |  Issue : 2  |  Page : 111-115

Can the centrosome be a marker for DNA ploidy in breast cancer?

1 Department of Gynecology, Hopital Tenon, University Pierre et Marie Curie, Paris, France
2 Department of Cytology, Hopital Tenon, University Pierre et Marie Curie, Paris, France

Correspondence Address:
Rita A Sakr
Department of Gynecology, Hopital Tenon, 4 rue de la chine, 75020 Paris
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0970-9371.97150

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Background: The role of DNA ploidy in genomic instability of cancer cells and prognosis has been described in a number of studies. The role of the centrosome in cell cycle has also been reported. Aim: In this study, we aimed to investigate the correlation between the centrosome and DNA ploidy in breast cancer in a search for a cytologic predictive and prognostic marker. Materials and Methods: Cell prints were prepared from cell culture of mesothelial cells, fibroblast cell line MRC5 and breast cancer cell lines MCF7 and T47D. Indirect immunofluorescence was used with anti-γ-tubulin and centrosomes were quantified using a fluorescence microscope. DNA ploidy was scored with the DNA index analyzed by flow cytometry. Results: The normal mesothelial cells (94% of the cells with one detected centrosome) and MRC5 diploid cells (68% with two centrosomes) were used as quality controls. A correlation between the number of centrosomes and DNA ploidy was found in MCF7 cell lines (64% of the cells with a number of centrosomes ≥ 3). It was not observed in invasive breast cancer samples; however, the frequency of cells with centrosomes ≥ 3 was found to be slightly higher in DNA aneuploid samples than in DNA diploid samples (15% vs 13.3%). Conclusion: Quantification of centrosome appears to be correlated to DNA ploidy in breast cancer cell lines and slightly associated to DNA aneuploidy in invasive breast cancer. Studies analyzing a larger number of samples as well as morphological abnormalities of the centrosome are needed.

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