Example 10
Phospho-histone-H3-488 (Ser10) (p-H3-488, Cell Signaling), α-tubulin (Serotec), AurKB (BD Transduction), Anti-Centromere-Antibodies (ACA, Cortex Biochem), cyclin A and B (Santa Cruz Biotechnology), and SECURIN (Gene Tex). BubR1 and Bub1 were from Hongtao Yu. FITC-, Cy3- and Cy5-conjugated secondary antibodies were from Jackson Immuno Research.
Cells were synchronized in G1/S, released into the cell cycle in the presence of DMSO or MI-181, and cell extracts were prepared at several time points post-release. Immoblot analysis of these extracts revealed that MI-181 treated cells arrested in mitosis (p-H3 positive), activated the SAC (BubR1 remained phosphorylated) and stabilized cyclin B while degrading cyclin A. (