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Erschienen in: Annals of Hematology 7/2016

19.04.2016 | Original Article

Significance of AZD1152 as a potential treatment against Aurora B overexpression in acute promyelocytic leukemia

verfasst von: Samad Ghanizadeh-Vesali, Ali Zekri, Farhad Zaker, Azam Zaghal, Meysam Yousefi, Kamran Alimoghaddam, Ardeshir Ghavamzadeh, Seyed H. Ghaffari

Erschienen in: Annals of Hematology | Ausgabe 7/2016

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Abstract

Aurora B kinase as a chromosomal passenger protein plays multiple roles in regulating mitosis and cytokinesis. The function of Aurora B in leukemic cells has made it an important treatment target. In this study, we explored the expressions of Aurora (A, B, and C) kinases in newly diagnosed acute promyelocytic leukemia (APL) patients. In addition, we investigated the effects of AZD1152 as a specific inhibitor of Aurora B on cell survival, DNA synthesis, nuclear morphology, apoptosis induction, cell cycle distribution, and gene expression in an APL-derived NB4 cell line. Our results showed that Aurora B was overexpressed in 88 % of APL patients. AZD1152 treatment of NB4 cells led to viability reduction and G2/M arrest followed by an increase in cell size and polyploidy induction. These giant cells showed morphological evidence of mitotic catastrophe. AZD1152 treatment induced activation of G2/M checkpoint which in turn led to transient G2/M arrest in a p21-independent manner. Lack of functional p53 in NB4 cells might provide an opportunity to escape from G2/M block and to endure repeated rounds of replication and polyploidy. Treated cells were probably eliminated via p73-mediated overexpression of BAX, PUMA, and APAF1 and downregulation of survivin and MCL-1. In summary, AZD1152 treatment led to endomitosis and polyploidy in TP53-mutated NB4 cells. These giant polyploid cells might undergo mitotic catastrophe and p73-mediated apoptosis. It seems that induction of polyploidy via AZD1152 could be a novel form of anti-cancer therapy for APL that may be clinically accessible in the near future.
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Metadaten
Titel
Significance of AZD1152 as a potential treatment against Aurora B overexpression in acute promyelocytic leukemia
verfasst von
Samad Ghanizadeh-Vesali
Ali Zekri
Farhad Zaker
Azam Zaghal
Meysam Yousefi
Kamran Alimoghaddam
Ardeshir Ghavamzadeh
Seyed H. Ghaffari
Publikationsdatum
19.04.2016
Verlag
Springer Berlin Heidelberg
Erschienen in
Annals of Hematology / Ausgabe 7/2016
Print ISSN: 0939-5555
Elektronische ISSN: 1432-0584
DOI
https://doi.org/10.1007/s00277-016-2670-6

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