Aurora-A and hBora join the game of Polo.

Overactivation of both Polo-like kinase-1 (Plk1) and Aurora-A is linked to cancer development, and small-molecule inhibitors that target these kinases are currently tested as anticancer drugs. Here, we discuss recent advances in the understanding of the functional crosstalk between Plk1 and Aurora-A before and during mitosis. Several recent findings have led to a better appreciation of how the activities of these distinct mitotic kinases are intertwined. Such insight is important for the expected utility of small-molecule inhibitors targeting Plk1 or Aurora-A, and it might help us to improve their application.