## Abstract This study examined the pharmacokinetic disposition of SJโ8029, a novel anticancer agent possessing microtubule and topoisomerase inhibiting activities, in mice, rats, rabbits and dogs after i.v. administration. The serum concentration__โ__time curves of SJโ8029 were best described by t
Microtubule disassembly and inhibition of mitosis by a novel synthetic pharmacophore
โ Scribed by Robin M. Scaife
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 532 KB
- Volume
- 98
- Category
- Article
- ISSN
- 0730-2312
No coin nor oath required. For personal study only.
โฆ Synopsis
Microtubule drugs, which block cell cycle progression through mitosis, have seen widespread use in cancer chemotherapies. Although microtubules are subject to regulation by signal transduction mechanisms, their pharmacological modulation has so far relied on compounds that bind to the tubulin subunit. A new microtubule pharmacophore, diphenyleneiodonium, causing disassembly of the microtubule cytoskeleton is described here. Although this synthetic compound does not affect the assembly state of purified microtubules, it profoundly suppresses microtubule assembly in vivo, causes paclitaxel-stabilized microtubules to cluster around the centrosomes, and selectively disassembles dynamic microtubules. Similar to other microtubule drugs, this new pharmacophore blocks mitotic spindle assembly and mitotic cell division.
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