Cancer Terms

PNU 166148

Cancer Terms -> Drugs and Chemicals -> Pharmacologic Substance -> Enzyme Inhibitor -> Topoisomerase Inhibitor -> Topoisomerase-I Inhibitor -> Camptothecin Analogue -> PNU 166148

PNU 166148 Definition

A water-soluble prodrug, consisting of camptothecin covalently linked to polymeric backbone methacryloylglycynamide, with potential antineoplastic activity. After entering tumor cells, the active moiety camptothecin is slowly released from mureletecan via hydrolysis of the ester linkage. Camptothecin, an alkaloid isolated from the Chinese tree Camptotheca acuminata, binds to and stabilizes the topoisomerase I-DNA covalent complex. This inhibits the religation of topoisomerase I-mediated single-stranded DNA breaks and produces potentially lethal double-stranded DNA breaks when encountered by the DNA replication machinery, resulting in the inhibition of DNA replication and apoptosis. Compared to camtpothecin, this prodrug formulation increases camptothecin drug delivery to the tumor site while reducing systemic toxicity.

PNU 166148 Synonyms

Mureletecan, MAG-CPT, MAG-Camptothecin, PNU 166148, PNU166148

Terms in PNU 166148 category



Copyright © Cancer Terms 2014 All rights reserved. | Terms of Use | Low Carb Foods

No reproduction or republication permitted.