AT-9283 is a broad spectrum kinase inhibitor that potently inhibits Aurora A, Aurora B, JAK2, JAK3, and c-ABL (IC50s = 3, 3, 1.2, 1.1, and 4 nM, respectively). It also potently (IC50 = <1 μM) inhibits many other kinases, including serine/threonine kinases as well as receptor and non-receptor tyrosine kinases. As Aurora kinases have roles in mitosis, inhibitors of these kinases, including AT-9283, have potential in cancer therapy. Consistent with this, AT-9283 is effective in preventing proliferation of cancer cells both in vitro and in vivo and this effect may be enhanced by combination therapy with other chemotherapeutics.
