4.5 Article

Targeting a viral DNA sequence with a deoxyribozyme in a preparative scale

期刊

BIOCHIMIE
卷 165, 期 -, 页码 161-169

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ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.biochi.2019.07.022

关键词

Deoxyribozyme; F-8; Viral DNA; Oxidative DNA-Cleavage; Hydrogen peroxide; Preparative catalysis

资金

  1. University of Isfahan

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Deoxyribozymes are synthetic and single stranded DNAs that are capable of catalysis of a variety of reactions, including cleavage of DNA substrates. Deoxyribozymes are usually characterized by analytical single-turnover kinetic assays, however, for many applications e.g. characterization of the reaction products, semi-preparative and preparative reactions are required. At such scales, there is a lack of comprehensive analysis and conditions that supports high amount of products in an appropriate time-scale are vaguely guessed by researchers. In this report, catalytic activity of an oxidizing DNA-cleaving deoxyribozyme, F-8(X), was comprehensively inspected in semi-preparative (10 mu M substrate) scale. A 60 nucleotides long synthetic DNA sequence was selected as the target DNA for this study. The DNA sequence was originated from a single stranded DNA virus. Investigations revealed high yield in the presence of optimal concentration of oxidizing agents. The optimal conditions have been applied for scale-up of the reaction to preparative (40 mu M substrate) and multi-turnover reactions to achieve highest amount of product in a cost-, time- and labor-effective manner. Such a comprehensive analysis of a deoxyribozyme's activity in semi-preparative scale provides a platform for expanded applications of DNA catalysts as a tool in chemical biology. (C) 2019 Elsevier B.V. and Societe Francaise de Biochimie et Biologie Moleculaire (SFBBM). All rights reserved.

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