Topics in Anti-Cancer Research

Volume: 2

Indexed in: Accepted Book Citation Index, Science (BKCI-S), Chemical Abstracts, BIOSIS Previews, EBSCO, Ulrich's Periodicals Directory.

This is the second volume of the Patent eBook Series titled Topics in Anti-Cancer Research. The eBook includes updated chapters on topics relevant to contemporary cancer research published in the ...
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Ribonucleotide Reductase as a Target to Control Cancer Proliferation

Pp. 363-406 (44)

Nuno M.F.S.A. Cerqueira, Narayana S.H.N. Moorthy, Pedro A. Fernandes and Maria J. Ramos

Abstract

Ribonucleotide Reductase (RNR) plays a critical role in DNA synthesis, and is a well-recognized target for cancer chemotherapeutic and antiviral agents. RNR inhibition precludes DNA transcription and repair, from which results cell apoptosis. Many regulation checkpoints concerning RNR activity have been unravelled through the last two decades, with potential use to inhibit enzyme activity. This was accomplished by researchers from different but complementary areas from which several and different inhibitors have resulted. The volume of these studies has generated over 5000 articles since the discovery of RNR in 1960. Some of these compounds have already been approved by FDA and EMEA for the treatment of specific types of cancer, as it is the case of gemcitabine, fluoromethylene and hydroxyurea. This chapter summarizes patents and papers during the period 1958-2012 dealing with the present understanding of ribonucleotidereductase biochemistry, mechanism of action and the most relevant data concerning RNR inhibition. Special attention is given to the inhibitors that have been patented and are currently in clinical use.

Keywords:

Allosteric, antisense, cancer, clinical trials, dimerization, DNA, FDA, gemcitabine, GTI-2040, HIV, hydroxyurea, inhibitors, iron chelators, mechanisms, nucleotides, radical-scavengers, ribonucleotide reductase, substrate analogues, tezacitabine, theoretical results.

Affiliation:

REQUINTE, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n 4169-007 Porto – Portugal.