Description_x000D_ Application_x000D_ Vinblastine sulfate salt has been used:_x000D_ • as a microtubule depolymerizing drug for the synchronization of human cell lines in G2/M phase_x000D_ • as a multidrug resistance screening substrate in human colon cancer cell line (HCT116) cell line_x000D_ • as an antimicrotubule agent in sub perineural glia of Drosophila brain_x000D_ Biochem/physiol Actions_x000D_ Plant alkaloid that inhibits microtubule assembly by binding tubulin and inducing self-association in spiral aggregates in a reaction that appears to be regulated by the C-terminus of β-tubulin and is enhanced by GDP and GTP. Depolymerizes microtubules. Arrests the cell cycle in G2/M-phase by blocking mitotic spindle formation. Triggers Raf-1 activation, phosphorylation of bcl-2-family proteins, induction of p53 expression, and apoptosis in several tumor cell lines. Substrate of Pgp and CYP3A4._x000D_ Features and Benefits_x000D_ This compound is a featured product for ADME Tox research. Click here to discover more featured ADME Tox products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm._x000D_ This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more._x000D_ This compound was developed by Eli Lilly. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here._x000D_ Legal Information_x000D_ LOPAC is a registered trademark of Sigma-Aldrich Co. LLC