MKC-1

**Semantic type:** Organic Chemical|Pharmacologic Substance

**Definition:** An orally bioavailable, small-molecule, bisindolylmaleimide cell cycle inhibitor with potential antineoplastic activity. MKC-1 and its metabolites inhibit tubulin polymerization, blocking the formation of the mitotic spindle, which may result in cell cycle arrest at the G2/M phase and apoptosis. In addition, this agent has been shown to inhibit the activities of the oncogenic kinase Akt, the mTOR pathway, and importin-beta, a protein essential to the transport of other proteins from the cytosol into the nucleus.

**Synonyms:** - R440 - Ro 31-7453 - Ro 31-7453