期刊
MEDICINAL RESEARCH REVIEWS
卷 29, 期 1, 页码 29-64出版社
WILEY
DOI: 10.1002/med.20137
关键词
bioreductive activation; gene-directed enzyme prodrug therapy (GDEPT); hypoxia; metal complex; nitroaromatic; nitroreduction; N-oxide; prodrug; quinone; target-specific activation
Anticancer prodrugs designed to target specifically tumor cells should increase therapeutic effectiveness and decrease systemic side effects in the treatment of cancer. Over the last 20 years, significant advances have been made in the development of anticancer prodrugs through the incorporation of triggers for reductive activation. Reductively activated prodrugs have been designed to target hypoxic tumor tissues, which are known to overexpress several endogenous reductive enzymes. In addition, exogenous reductive enzymes can be delivered to tumor cells through fusion with tumor-specific antibodies or overexpressed in tumor cells through gene delivery approaches. Many anticancer prodrugs have been designed to use both the endogenous and exogenous reductive enzymes for target-specific activation and these prodrugs often contain functional groups such as quinones, nitroaromatics, N-oxides, and metal complexes. Although no new agents have been approved for clinical use, several reductively activated prodrugs are in various stages of clinical trial. This review mainly focuses on the medicinal chemistry aspects of various classes of reductively activated prodrugs including design principles, structure-activity relationships, and mechanisms of activation and release of active drug molecules. (C) 2008 Wiley Periodicals, Inc. Med Res Rev, 29, No. 1, 29-64, 2009
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