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Nat Cell Biol. 1999 May;1(1):60-7.

Indirubin, the active constituent of a Chinese antileukaemia medicine, inhibits cyclin-dependent kinases.

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Department of Chemistry, University of Kaiserslautern, Germany.


Indirubin is the active ingredient of Danggui Longhui Wan, a mixture of plants that is used in traditional Chinese medicine to treat chronic diseases. Here we identify indirubin and its analogues as potent inhibitors of cyclin-dependent kinases (CDKs). The crystal structure of CDK2 in complex with indirubin derivatives shows that indirubin interacts with the kinase's ATP-binding site through van der Waals interactions and three hydrogen bonds. Indirubin-3'-monoxime inhibits the proliferation of a large range of cells, mainly through arresting the cells in the G2/M phase of the cell cycle. These results have implications for therapeutic optimization of indigoids.

[Indexed for MEDLINE]

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