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A novel treatment strategy targeting Aurora kinases in acute myelogenous leukemia

2007; American Association for Cancer Research; Volume: 6; Issue: 6 Linguagem: Inglês

10.1158/1535-7163.mct-07-0067

1538-8514

Takayuki Ikezoe, Jing Yang, Chie Nishioka, Taizo Tasaka, Ayuko Taniguchi, Yoshio Kuwayama, Naoki Komatsu, Kentaro Bandobashi, Kazuto Togitani, H. Phillip Koeffler, Hirokuni Taguchi,

Glioma Diagnosis and Treatment

Abstract The Aurora kinases play an important role in chromosome alignment, segregation, and cytokinesis during mitosis. Aberrant expression of these kinases occurs in solid tumors and is associated with aneuploidy and carcinogenesis. We found in this study that Aurora kinase A and B were aberrantly expressed in a variety of types of human leukemia cell lines (n = 15, e.g., PALL-1, PALL-2, HL-60, NB4, MV4-11, etc.), as well as freshly isolated leukemia cells from individuals with acute myelogenous leukemia (n = 44) compared with bone marrow mononuclear cells from healthy volunteers (n = 11), as measured by real-time PCR. ZM447439 is a novel selective Aurora kinase inhibitor. The compound induced growth inhibition, caused accumulation of cells with 4N/8N DNA content, and mediated apoptosis of human leukemia cells as measured by thymidine uptake, cell cycle analysis, and annexin V staining, respectively. Especially profound growth inhibition occurred with the PALL-1 and PALL-2 cells, which possess wild-type p53 gene. In contrast, ZM447439 did not inhibit clonogenic growth of myeloid committed stem cells harvested from healthy normal volunteers. Taken together, inhibition of Aurora kinases may be a promising treatment strategy for individuals with leukemia. [Mol Cancer Ther 2007;6(6):1851–7]