Selective targeting of 2′-deoxy-5-fluorouridine to urokinase positive malignant cells in vitro
作者:Kara L. Vine、Julie M. Locke、John B. Bremner、Stephen G. Pyne、Marie Ranson
DOI:10.1016/j.bmcl.2010.03.029
日期:2010.5
A urokinase targeting conjugate of 2'-deoxy-5-fluorouridine (5-FUdr) was synthesized and tested for tumor-cell selective cytotoxicity in vitro. The 5-FUdr prodrug 2'-deoxy-5-fluoro-3'-O-(3-carboxypropanoyl)uridine (5-FUdrsuccOH) containing an ester-labile succinate linker was attached to the specific urokinase inhibitor plasminogen activator inhibitor type II (PAI-2) and was found to preferentially kill urokinase-over expressing cancer cells. Up to 7 molecules of 5-FUdr were incorporated per PAI-2 molecule without affecting protein activity. This is the first time a small organic cytotoxin has been conjugated to PAI-2. (C) 2010 Elsevier Ltd. All rights reserved.