Colchicine Glycorandomization Influences Cytotoxicity and Mechanism of Action
作者:Aqeel Ahmed、Noël R. Peters、Megan K. Fitzgerald、James A. Watson,、F. Michael Hoffmann、Jon S. Thorson
DOI:10.1021/ja064686s
日期:2006.11.1
The reaction of 70 unprotected, diversely functionalized free reducing sugars with methoxyamine-appended colchicine led to the production of a 58-member glycorandomized library. High-throughput cytotoxicity assays revealed glycosylation to modulate specificity and potency. Library members were also identified which, unlike the parent natural product (a destabilizer), stabilized in vitro tubulin polymerization in a manner similar to taxol. This study highlights a simple extension of neoglycorandomization toward amine-bearing scaffolds and the potential benefit of glycosylating nonglycosylated natural products.
COLCHICINE NEOGLYCOSIDES AND METHODS FOR THEIR SYNTHESIS AND USE
申请人:Thorson Jon S.
公开号:US20080171787A1
公开(公告)日:2008-07-17
Colchicine neoglycosides, method for their synthesis and methods for their use are disclosed. The invention provides analogs of colchicine glycosylated to include a sugar moiety on a colchicine scaffold that is generally unglycosylated in nature. The colchicine neoglycosides disclosed herein are shown to have cytotoxic effects equivalent to at least the known cytotoxins paclitaxel and doxorubicin. Further, the neoglycosides disclosed according to the invention have physiologic effects not previously recognized in the alkaloid family that includes colchicine but recognized in other cytotoxic drug families such as the taxanes which act by stabilizing tubulin formation.
High-throughput assay for sugar-mediated drug transport
申请人:Thorson Jon S.
公开号:US20090317829A1
公开(公告)日:2009-12-24
The invention provides a rapid, quantitative assay to directly assess the impact of a diverse range of sugars upon the sugar-mediated uptake of corresponding sugar-conjugates into various cell types.
High-Throughput Assay for Sugar-Mediated Drug Transport
申请人:Thorson Jon S.
公开号:US20120245054A1
公开(公告)日:2012-09-27
The invention provides a rapid, quantitative assay to directly assess the impact of a diverse range of sugars upon the sugar-mediated uptake of corresponding sugar-conjugates into various cell types.