Method of assaying nucleic acid using labeled nucleotide
First Claim
1. A method of quantifying at least one nucleic acid, which comprises:
- conducting a nucleic acid polymerization reaction in a nucleic acid polymerization reaction system that is a reaction solution comprising;
(A) said at least one nucleic acid as a template,(B)(a) a fluorescent dye capable of emitting fluorescence upon binding to a nucleic acid; and
(b) a nucleotide monomer labeled with an acceptor fluorescent dye, and(C) at least one nucleic acid-synthesizing enzyme,measuring in real-time during the nucleic acid polymerization a change or an amount of a change in an optical character of said nucleic acid polymerization system as the reaction solution; and
determining the quantity of said template nucleic acid or nucleic acid, being synthesized using said template nucleic acid as a template based on the measured change or the measured amount of the change in the optical character.
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Abstract
A novel method is provided to assay at least one nucleic acid. According to this method, a nucleic acid polymerization reaction is conducted in a nucleic acid polymerization reaction system, which contains (A) the at least one nucleic acid as a template, (B) at least one nucleotide monomer labeled with at least one label selected from the group consisting of (a) fluorescent dyes, (b) quenchers and (c) immune related substances with a fluorescent dye or quencher contained therein, and (C) at least one nucleic acid-synthesizing enzyme. The template nucleic acid or a nucleic acid, which has been synthesized using the template nucleic acid as a template, is then assayed from a change or an amount of a change in an optical character of the nucleic acid polymerization system. This method makes it possible to specifically and accurately assay at least one nucleic acid, which is contained in a single system and can be an unknown nucleic acid and/or a known nucleic acid, with excellent sensitivity, in short time and with ease.
5 Citations
12 Claims
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1. A method of quantifying at least one nucleic acid, which comprises:
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conducting a nucleic acid polymerization reaction in a nucleic acid polymerization reaction system that is a reaction solution comprising; (A) said at least one nucleic acid as a template, (B)(a) a fluorescent dye capable of emitting fluorescence upon binding to a nucleic acid; and
(b) a nucleotide monomer labeled with an acceptor fluorescent dye, and(C) at least one nucleic acid-synthesizing enzyme, measuring in real-time during the nucleic acid polymerization a change or an amount of a change in an optical character of said nucleic acid polymerization system as the reaction solution; and determining the quantity of said template nucleic acid or nucleic acid, being synthesized using said template nucleic acid as a template based on the measured change or the measured amount of the change in the optical character. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of detecting a single nucleotide polymorphism in a nucleic acid template, the method comprising:
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conducting a single-base elongation reaction in a nucleic acid polymerization reaction system that is a reaction solution, wherein the system comprises (A) the nucleic acid as a template, (B) (a) a fluorescent dye capable of emitting fluorescence upon binding to a nucleic acid; and
(b) a dideoxynucleotide monomer labeled with an acceptor fluorescent dye,(C) at least one nucleic acid-synthesizing enzyme, and (D) a nucleic acid primer, measuring in real-time during the single-base elongation reaction a change or an amount of change in an optical character of the nucleic acid polymerization reaction system as the reaction solution; and detecting the single nucleotide polymorphism based on the measured change or the measured amount of the change in the optical character. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification