Publication details

Phenothiazine-linked nucleosides and nucleotides for redox labelling of DNA

Authors

SIMONOVA A. HAVRAN L. POHL R. FOJTA Miroslav HOCEK M.

Year of publication 2017
Type Article in Periodical
Magazine / Source ORGANIC & BIOMOLECULAR CHEMISTRY
MU Faculty or unit

Central European Institute of Technology

Citation
Web http://pubs.rsc.org/en/Content/ArticleLanding/2017/OB/C7OB01439B#!divAbstract
Doi http://dx.doi.org/10.1039/c7ob01439b
Keywords ELECTROCHEMICAL DETECTION; PRIMER EXTENSION; 2'-DEOXYRIBONUCLEOSIDE TRIPHOSPHATES; ENZYMATIC INCORPORATION; OLIGODEOXYNUCLEOTIDES; OLIGONUCLEOTIDES; POLYMERASES; DERIVATIVES; 2'-DEOXYADENOSINE; ANTHRAQUINONE
Description Nucleosides and 2'-deoxyribonucleoside triphosphates (dNTPs) bearing phenothiazine (PT) attached to a nucleobase (cytosine or 7-deazaadenine) either directly or through an acetylene linker were prepared through Suzuki or Sonogashira cross-coupling and triphosphorylation, and were studied as building blocks for polymerase construction of modified DNA. The directly PT-substituted dNTPs were better substrates for polymerases than the alkyne-linked dNTPs but all of them were used in enzymatic synthesis of DNA using primer extension, nicking enzyme amplification, PCR or 3'-tail labelling by terminal deoxynucleotidyl transferase. The phenothiazine served as an oxidizable redox label (giving two analytically useful signals of oxidation on electrode) for nucleosides and DNA and was also used in orthogonal combination with previously developed benzofurazane or nitrophenyl labels for redox coding of DNA bases. Therefore, the title PT-linked dNTPs are useful additions to the portfolio of nucleotides for enzymatic synthesis of redox-labelled DNA for electrochemical analysis.
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