Aurora kinase A (AURKA)

Class

Aurora kinase A inhibitor

Pathway

Mitotic spindle assembly / cell-cycle progression

Aurora kinase A (AURKA) is an enzyme that adds phosphate groups to other proteins (a serine/threonine kinase) and coordinates several steps of cell division. It helps organize the centrosomes, the structures that nucleate the mitotic spindle, and it promotes the transition from the resting phase of the cell cycle into mitosis. Because dividing cells must correctly build and use this spindle to separate their chromosomes, AURKA activity is tightly regulated in normal tissue. In many cancers, the gene encoding AURKA is amplified or overexpressed, which can drive excessive proliferation and contribute to chromosomal instability, a hallmark of tumor evolution. Blocking AURKA activity can stall cancer cells in mitosis or trigger mitotic errors severe enough to cause cell death, a process sometimes called mitotic catastrophe. Beyond its classical mitotic role, AURKA also stabilizes certain oncogenic transcription factors independent of its enzymatic activity, which broadens the rationale for targeting it in cancers where those factors drive growth. This mechanism is of interest across a range of proliferative and oncologic contexts, particularly tumors characterized by high mitotic rates or specific amplification patterns of the AURKA locus or its downstream partners.