The chelate effect in binding, catalysis, and chemotherapy

被引:66
作者
Breslow, R [1 ]
Belvedere, S [1 ]
Gershell, L [1 ]
Leung, D [1 ]
机构
[1] Columbia Univ, Dept Chem, New York, NY 10027 USA
关键词
D O I
10.1351/pac200072030333
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Cyclodextrin (CD) dimers bind amino acid side chains, and such binding can dissociate aggregated proteins, including citrate synthase (dimer) and lactic dehydrogenase (tetramer). A CD dimer can bind a hydrophobic photosensitizer that, upon irradiation, generates singlet oxygen. This cleaves the dimer and releases the photosensitizer. CD dimers in a cytochrome P-450 mimic steer catalyzed hydroxylation to a bound steroid with geometric control. Chelate binding has also led to a group of cytodifferentiating agents whose mechanism has been recently established. They have promising anticancer properties, and are currently entering human trials as therapeutic agents.
引用
收藏
页码:333 / 342
页数:10
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