Tubulin Polymerization Inhibitor Screening

Microtubules (MTs) are comprised of a/b tubulin heterodimers which have polymerized into cylinderical structures. MTs serve as an essential component of a cell’s cytoskeleton as they regulate and participate in a variety of cellular functions that include motility, morphology, intracellular transport, signal transduction, and cell division (Fig. 1). The cell cycle consists of the sequential G1, S, G2, and M phases with MT polymerization and depolymerization (i.e., MT dynamics) playing a key role in the normal progression of this cycle to insure proper cell division (Fig. 1). The disruption of MT dynamics, and thereby the cell cycle, leads to cell death. As such, MTs are a well-recognized and often-studied target for cancer drug discovery efforts1-4...

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