Abstract
Cantharidin (CTD), a natural toxin, can inhibit a variety of tumor cell lines, especially hepatocellular carcinoma cells. It is a strong inhibitor of protein phosphatase type 1 (PP1) and type 2A (PP2A). Because of the cytotoxicity, the clinical application of CDT is limited. Here, we review the structure-activity relationships of CDT analogues, including norcantharidin (NCTD), cantharimides and related derivatives of CTDs, which have more powerful antitumor activity but less cytotoxicity than CDT itself. Important advances in the design of the CTD-based inhibitors achieved recently are outlined here in order to establish principles for synthesis, screening, and the applications of promising anti-cancer drug candidates. In addition, efforts to ameliorate the intrinsic cytotoxicity through the use of drug carriers are also discussed. It is conceivable that rational design of the protein phosphatase inhibitors based on cantharidin analogues can be facilitated by studies of mechanism of the protein-inhibitor interactions and the related structural biology in the future.
Keywords: Cantharidin, antitumor, norcantharidin, PP1, PP2A, structure-activity relationship.
Mini-Reviews in Medicinal Chemistry
Title:Exploiting Protein Phosphatase Inhibitors Based on Cantharidin Analogues for Cancer Drug Discovery
Volume: 13 Issue: 8
Author(s): Liping Deng, Jian Dong and Wei Wang
Affiliation:
Keywords: Cantharidin, antitumor, norcantharidin, PP1, PP2A, structure-activity relationship.
Abstract: Cantharidin (CTD), a natural toxin, can inhibit a variety of tumor cell lines, especially hepatocellular carcinoma cells. It is a strong inhibitor of protein phosphatase type 1 (PP1) and type 2A (PP2A). Because of the cytotoxicity, the clinical application of CDT is limited. Here, we review the structure-activity relationships of CDT analogues, including norcantharidin (NCTD), cantharimides and related derivatives of CTDs, which have more powerful antitumor activity but less cytotoxicity than CDT itself. Important advances in the design of the CTD-based inhibitors achieved recently are outlined here in order to establish principles for synthesis, screening, and the applications of promising anti-cancer drug candidates. In addition, efforts to ameliorate the intrinsic cytotoxicity through the use of drug carriers are also discussed. It is conceivable that rational design of the protein phosphatase inhibitors based on cantharidin analogues can be facilitated by studies of mechanism of the protein-inhibitor interactions and the related structural biology in the future.
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Cite this article as:
Deng Liping, Dong Jian and Wang Wei, Exploiting Protein Phosphatase Inhibitors Based on Cantharidin Analogues for Cancer Drug Discovery, Mini-Reviews in Medicinal Chemistry 2013; 13 (8) . https://dx.doi.org/10.2174/1389557511313080005
DOI https://dx.doi.org/10.2174/1389557511313080005 |
Print ISSN 1389-5575 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5607 |
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