Imatinib is an inhibitor of the receptor tyrosine kinases c-Abl, Bcr-Abl, PDGFR, and c-Kit. It inhibits ligand-stimulated autophosphorylation of PDGFR and c-Kit (IC50s = ~0.3 and ~0.1 µM, respectively). Imatinib inhibits the proliferation of Bcr-Abl-dependent R10(-) cells (IC50s = ~35-40 nM) and HMC-1 cells...

(±)-Blebbistatin is a racemic mixture of (-)-blebbistatin (Cay-13013) and (+)-blebbistatin (Cay-13165), the active and inactive forms, respectively. (-)-Blebbistatin is a selective cell-permeable inhibitor of non-muscle myosin II ATPases. (-)-Blebbistatin rapidly and reversibly inhibits Mg-ATPase activity and in...

Histone deacetylase 6 (HDAC6) is a class II HDAC that represses transcription by removing acetyl groups from histones. In addition, HDAC6 deacetylases tubulin, which is important in regulating microtubule stability and function. CAY10603 is a potent and selective inhibitor of HDAC6 (IC50 = 0.002 nM, as compared with...

Rac1 is a GTPase that is involved in the regulation of the cell cycle, cell-cell adhesion, motility, and differentiation. Rac1 is activated by its interaction with specific guanine nucleotide exchange factors (GEFs). NSC 23766 is a cell-permeable, reversible inhibitor of Rac1 activation by the Rac-specific GEFs...