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Rolling Circle Amplification with Chemically Modified Nucleoside Triphosphates

Abstract : Modified nucleoside triphosphates (dN*TPs) represent facile and versatile precursors for the introduction of chemical diversity into nucleic acids. While dN*TPs have been utilized in a plethora of practical applications, very little attention has been devoted to the assessment of their compatibility with isothermal amplification strategies. In this context, rolling circle amplification (RCA) is a wide-spread enzymatic replication method in which small single-stranded DNA (ssDNA) circles serve as templates in primer extension reactions yielding very long, ssDNA products. RCA is a pivotal tool for the generation of biosensor and diagnostic devices and is currently evaluated for its usefulness to create novel drug delivery systems. This unit describes the experimental procedures for the synthesis of modified RCA products using dN*TPs bearing chemical alterations at any possible location of the nucleosidic scaffold. Two ligation methods are presented for the generation of the DNA nanocircles that serve as templates for RCA, followed by a description of the RCA method itself and an assessment of the nuclease resistance of the ensuing products.
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Submitted on : Wednesday, January 4, 2017 - 2:02:02 PM
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Marcel Hollenstein, Masad Damha. Rolling Circle Amplification with Chemically Modified Nucleoside Triphosphates. Current Protocols in Nucleic Acid Chemistry, 2016, 7, ⟨10.1002/cpnc.17⟩. ⟨pasteur-01426352⟩

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