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Base Excision Repair: Contribution to Tumorigenesis and Target in Anticancer Treatment Paradigms

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Abstract:

Cancer treatments often lose their effectiveness due to the development of multiple drug resistance. Thus, identification of key proteins involved in the tumorigenic process and the survival mechanism(s), coupled with the design of novel therapeutic compounds (such as small molecule inhibitors), are essential steps towards the establishment of improved anticancer treatment strategies. DNA repair pathways and their proteins have been exposed as potential targets for combinatorial anticancer therapies that involve DNA-interactive cytotoxins, such as alkylating agents, because of their central role in providing resistance against DNA damage. In addition, an understanding of the tumor-specific genetics and associated DNA repair capacity has allowed research scientists and clinicians to begin to devise more targeted treatment strategies based on the concept of synthetic lethality. In this review, the repair mechanisms, as well as the links to cancer progression and treatment, of three key proteins that function in the base excision repair pathway, i.e. APE1, POLβ, and FEN1, are discussed.

Keywords: AP or abasic endonuclease; Cancer treatments; DNA polymerase; carcinogenesis; drug resistance; flap endonuclease; key proteins; repair inhibitor; survival mechanism(s); tumorigenic process

Document Type: Research Article

DOI: http://dx.doi.org/10.2174/092986712802002581

Publication date: August 1, 2012

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  • Current Medicinal Chemistry covers all the latest and outstanding developments in medicinal chemistry and rational drug design. Each issue contains a series of timely in-depth reviews written by leaders in the field covering a range of the current topics in medicinal chemistry. Current Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments.
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