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Oncogene. 2014 Jan 30;33(5):539-49. doi: 10.1038/onc.2012.632. Epub 2013 Jan 21.

Aurora kinase A mediates epithelial ovarian cancer cell migration and adhesion.

Author information

1
1] Women's Cancer Program, Fox Chase Cancer Center, Philadelphia, PA, USA [2] Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS, USA.
2
1] Women's Cancer Program, Fox Chase Cancer Center, Philadelphia, PA, USA [2] Developmental Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA, USA.
3
Women's Cancer Program, Fox Chase Cancer Center, Philadelphia, PA, USA.
4
Department of Pathology, Fox Chase Cancer Center, Philadelphia, PA, USA.
5
Transgenic Facility, Fox Chase Cancer Center, Philadelphia, PA, USA.
6
Developmental Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA, USA.
7
Department of Translational Medicine, Millennium Pharmaceuticals Inc., Cambridge, MA, USA.
8
Biostatistics Facility, Fox Chase Cancer Center, Philadelphia, PA, USA.
9
1] Women's Cancer Program, Fox Chase Cancer Center, Philadelphia, PA, USA [2] Department of Medical Oncology, Fox Chase Cancer Center, Philadelphia, PA, USA [3] Department of Gynecologic Medical Oncology, Thomas Jefferson University, Philadelphia, PA, USA.

Abstract

Aurora kinase A (AURKA) localizes to centrosomes and mitotic spindles where it mediates mitotic progression and chromosomal stability. Overexpression of AURKA is common in cancer, resulting in acquisition of alternate non-mitotic functions. In the current study, we identified a novel role for AURKA in regulating ovarian cancer cell dissemination and evaluated the efficacy of an AURKA-selective small molecule inhibitor, alisertib (MLN8237), as a single agent and combined with paclitaxel using an orthotopic xenograft model of epithelial ovarian cancer (EOC). Ovarian carcinoma cell lines were used to evaluate the effects of AURKA inhibition and overexpression on migration and adhesion. Pharmacological or RNA interference-mediated inhibition of AURKA significantly reduced ovarian carcinoma cell migration and adhesion and the activation-associated phosphorylation of the cytoskeletal regulatory protein SRC at tyrosine 416 (pSRC(Y416)). Conversely, enforced expression of AURKA resulted in increased migration, adhesion and activation of SRC in cultured cells. In vivo tumor growth and dissemination were inhibited by alisertib treatment as a single agent. Moreover, combination of alisertib with paclitaxel, an agent commonly used in treatment of EOC, resulted in more potent inhibition of tumor growth and dissemination compared with either drug alone. Taken together, these findings support a role for AURKA in EOC dissemination by regulating migration and adhesion. They also point to the potential utility of combining AURKA inhibitors with taxanes as a therapeutic strategy for the treatment of EOC patients.

PMID:
23334327
PMCID:
PMC3640671
DOI:
10.1038/onc.2012.632
[Indexed for MEDLINE]
Free PMC Article
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