Method of determining the nucleotide sequence of oligonucleotides and DNA molecules
First Claim
1. A method for sequencing DNA, comprising:
- a) providing a primer/template system comprising a template sequence hybridized to a primer oligonucleotide and a DNA polymerase;
b) contacting the primer/template system with a single type of deoxyribonucleotide under conditions that produce a detectable signal when the DNA polymerase incorporates a deoxyribonucleotide onto the 3′
end of the primer oligonucleotide, wherein the single type of deoxyribonucleotide is an unlabeled and unblocked deoxyribonucleotide, and wherein the contacting occurs in a reaction chamber;
c) converting, with a device, the detectable signal into an electrical signal based on an electrical potential generated across the device by the detectable signal, wherein the converting occurs in the reaction chamber;
d) detecting the electrical signal generated by the detectable signal produced in the reaction chamber; and
e) identifying the deoxyribonucleotide that is incorporated onto the 3′
end of the primer oligonucleotide.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to a novel method for analyzing nucleic acid sequences based on real-time detection of DNA polymerase-catalyzed incorporation of each of the four nucleotide bases, supplied individually and serially in a microfluidic system, to a reaction cell containing a template system comprising a DNA fragment of unknown sequence and an oligonucleotide primer. Incorporation of a nucleotide base into the template system can be detected by any of a variety of methods including but not limited to fluorescence and chemiluminescence detection. Alternatively, microcalorimetic detection of the heat generated by the incorporation of a nucleotide into the extending template system using thermopile, thermistor and refractive index measurements can be used to detect extension reactions.
460 Citations
12 Claims
-
1. A method for sequencing DNA, comprising:
-
a) providing a primer/template system comprising a template sequence hybridized to a primer oligonucleotide and a DNA polymerase; b) contacting the primer/template system with a single type of deoxyribonucleotide under conditions that produce a detectable signal when the DNA polymerase incorporates a deoxyribonucleotide onto the 3′
end of the primer oligonucleotide, wherein the single type of deoxyribonucleotide is an unlabeled and unblocked deoxyribonucleotide, and wherein the contacting occurs in a reaction chamber;c) converting, with a device, the detectable signal into an electrical signal based on an electrical potential generated across the device by the detectable signal, wherein the converting occurs in the reaction chamber; d) detecting the electrical signal generated by the detectable signal produced in the reaction chamber; and e) identifying the deoxyribonucleotide that is incorporated onto the 3′
end of the primer oligonucleotide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification