Continuous extension and deblocking in reactions for nucleic acids synthesis and sequencing
First Claim
1. A method of synthesizing a polynucleotide, comprising(a) providing a mixture comprising a nucleic acid, a collection of different nucleotide analogs, a polymerase having activity to incorporate a nucleotide analog comprising a blocking moiety into a nucleic acid, and a deblocking agent having activity to selectively remove a blocking moiety that has been incorporated into a nucleic acidcompared to a blocking moiety attached to a monomeric nucleotide analog, wherein each different nucleotide analog comprises a blocking moiety, and(b) allowing sequential addition of a plurality of the different nucleotide analogs to the nucleic acid to proceed via several reaction cycles in the mixture, wherein the polymerase and the deblocking agent are simultaneously present in the mixture to carry out the reaction cycles,wherein each reaction cycle comprises:
- (i) the polymerase adding a nucleotide analog from the collection of different nucleotide analogs to the nucleic acid to form a transient nucleic acid species comprising the blocking moiety, and(ii) the deblocking agent modifying the transient nucleic acid species to remove the blocking moiety;
wherein the blocking moiety is attached to the nucleotide analog at a 3′
carbon of a pentose moiety of the nucleotide analog, and the blocking moiety comprises a phosphodiester moiety or a phosphotriester moiety.
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Abstract
A reaction mixture including (a) a nucleic acid having a primer hybridized to a template, (b) nucleotide analogs, wherein the nucleotide analogs have a blocking moiety; (c) a polymerase that is capable of forming an extended primer by adding the nucleotide analogs to the primer, and (d) a deblocking agent that is capable of removing the blocking moiety from the extended primer. Also provided is a method of synthesizing a polynucleotide including sequentially adding a plurality of the different nucleotides analogs to the nucleic acid via several reaction cycles in the reaction mixture, wherein each reaction cycle includes (i) the polymerase adding a nucleotide analog to the nucleic acid to form a transient nucleic acid species comprising a blocking moiety, and (ii) the deblocking agent modifying the transient nucleic acid species to remove the blocking moiety.
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Citations
38 Claims
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1. A method of synthesizing a polynucleotide, comprising
(a) providing a mixture comprising a nucleic acid, a collection of different nucleotide analogs, a polymerase having activity to incorporate a nucleotide analog comprising a blocking moiety into a nucleic acid, and a deblocking agent having activity to selectively remove a blocking moiety that has been incorporated into a nucleic acid compared to a blocking moiety attached to a monomeric nucleotide analog, wherein each different nucleotide analog comprises a blocking moiety, and (b) allowing sequential addition of a plurality of the different nucleotide analogs to the nucleic acid to proceed via several reaction cycles in the mixture, wherein the polymerase and the deblocking agent are simultaneously present in the mixture to carry out the reaction cycles, wherein each reaction cycle comprises: -
(i) the polymerase adding a nucleotide analog from the collection of different nucleotide analogs to the nucleic acid to form a transient nucleic acid species comprising the blocking moiety, and (ii) the deblocking agent modifying the transient nucleic acid species to remove the blocking moiety; wherein the blocking moiety is attached to the nucleotide analog at a 3′
carbon of a pentose moiety of the nucleotide analog, and the blocking moiety comprises a phosphodiester moiety or a phosphotriester moiety. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of synthesizing a polynucleotide, comprising
(a) providing a mixture comprising a nucleic acid, a collection of different nucleotide analogs, a polymerase having activity to incorporate a nucleotide analog comprising a blocking moiety into a nucleic acid, a phosphotriesterase and a phosphodiesterase, wherein the phosphotriesterase and the phosphodiesterase together have activity to selectively remove a blocking moiety that has been incorporated into a nucleic acid compared to a blocking moiety attached to a monomeric nucleotide analog, wherein the different nucleotide analogs each comprise a phosphotriester blocking moiety, and (b) sequentially adding a plurality of the different nucleotide analogs to the nucleic acid by several reaction cycles in the mixture, wherein the polymerase, phosphotriesterase and phosphodiesterase are simultaneously present in the mixture to carry out the reaction cycles, wherein each reaction cycle comprises: -
(i) the polymerase adding a nucleotide analog of the collection of different nucleotide analogs to the nucleic acid to form a transient nucleic acid species comprising the phosphotriester blocking moiety, (ii) the phosphotriesterase converting the phosphotriester blocking moiety to a phosphodiester blocking moiety, and (iii) the phosphodiesterase removing the phosphodiester blocking moiety from the nucleic acid. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification