Mitotic catastrophe and apoptosis induced by docetaxel in hormone-refractory prostate cancer cells

Francesco Fabbri, Dino Amadori, Silvia Carloni, Giovanni Brigliadori, Anna Tesei, Paola Ulivi, Marco Rosetti, Ivan Vannini, Chiara Arienti, Wainer Zoli, Rosella Silvestrini

Research output: Contribution to journalArticle

Abstract

Studies performed in different experimental and clinical settings have shown that Docetaxel (Doc) is effective in a wide range of tumors and that it exerts its activity through multiple mechanisms of action. However, the sequence of events induced by Doc which leads to cell death is still not fully understood. Moreover, it is not completely clear how Doc induces mitotic catastrophe and whether this process is an end event or followed by apoptosis or necrosis. We investigated the mechanisms by which Doc triggers cell death in hormone-refractory prostate cancer cells by analyzing cell cycle perturbations, apoptosis-related marker expression, and morphologic cell alterations. Doc induced a transient increase in G2/M phase followed by the appearance of G0/1 hypo- and hyperdiploid cells and increased p21 expression. Time- and concentration-dependent apoptosis was induced in up to 70% of cells, in concomitance with Bcl-2 phosphorylation, which was followed by caspase-2 and -3 activation. In conclusion, Doc would seem to trigger apoptosis in hormone-refractory prostate cancer cells via mitotic catastrophe through two forms of mitotic exit, in concomitance with increased p21 expression and caspase-2 activation.

Original languageEnglish
Pages (from-to)494-501
Number of pages8
JournalJournal of Cellular Physiology
Volume217
Issue number2
DOIs
Publication statusPublished - Nov 2008

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docetaxel
Refractory materials
Prostatic Neoplasms
Cells
Hormones
Apoptosis
Caspase 2
Cell death
Cell Death
Chemical activation
Phosphorylation
Polyploidy
G2 Phase
Caspase 3
Cell Division
Tumors
Cell Cycle
Necrosis

ASJC Scopus subject areas

  • Clinical Biochemistry
  • Cell Biology
  • Physiology

Cite this

Mitotic catastrophe and apoptosis induced by docetaxel in hormone-refractory prostate cancer cells. / Fabbri, Francesco; Amadori, Dino; Carloni, Silvia; Brigliadori, Giovanni; Tesei, Anna; Ulivi, Paola; Rosetti, Marco; Vannini, Ivan; Arienti, Chiara; Zoli, Wainer; Silvestrini, Rosella.

In: Journal of Cellular Physiology, Vol. 217, No. 2, 11.2008, p. 494-501.

Research output: Contribution to journalArticle

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AU - Tesei, Anna

AU - Ulivi, Paola

AU - Rosetti, Marco

AU - Vannini, Ivan

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