Aurora Kinases Inhibitors

Aurora kinases are a family of enzymes that regulate key events in cell cycle progression. During mitosis, they are essential for proper chromosome segregation and the completion of cytokinesis. In many cancers, aurora kinases are overexpressed, promoting tumor growth and making them attractive targets for novel chemotherapeutic development.

Among the three known subtypes—aurora kinase A, B, and C—aurora kinase A is particularly notable for its involvement in p53 signaling. The p53 pathway governs cell growth regulation and programmed cell death (apoptosis). p53 acts as a tumor suppressor, and overexpression of aurora kinase A accelerates p53 degradation, suppressing checkpoint signaling and enabling oncogenic transformation.

Aurora kinase B plays a critical role in ensuring correct chromosome alignment and segregation. Inhibition of this enzyme disrupts kinetochore–microtubule attachments, leading to improper chromosome segregation and mitotic failure. Such inhibition does not halt the cell cycle directly; rather, it triggers a p53-dependent post-mitotic checkpoint, leading to a “pseudo-G1” arrest. In this state, highly abnormal cells continue to proliferate despite severe genomic instability, ultimately resulting in cell death.

Aladdin offers a range of aurora kinase inhibitors for research purposes. A selection of these compounds can be found in the list below.

References:

1. Katayama H, Sasai K, Kawai H, et al. Nat Genet. 2004 Jan;36(1):55-62.

2. Ditchfield C, Johnson VL, Tighe A, et al. J Cell Biol. 2003 Apr 28;161(2):267-80.

3. Harrington EA, Bebbington D, Moore J, et al. Nat Med. 2004 Mar;10(3):262-7.

Aladdin: https://www.aladdinsci.com/