Rolling circle synthesis of oligonucleotides and amplification of select randomized circular oligonucleotides
First Claim
1. A method for synthesizing a selected oligonucleotide having well-defined ends comprising:
- (a) annealing an effective amount of an oligonucleotide primer to a single-stranded circular template to yield a primed circular template, wherein the single-stranded circular template comprises (i) at least one copy of a nucleotide sequence complementary to the sequence of the selected oligonucleotide and (ii) at least one nucleotide effective to produce a cleavage site in the oligonucleotide multimer;
(b) combining the primed circular template with an effective amount of at least two types of nucleotide triphosphates and an effective amount of a polymerase enzyme without the addition of auxiliary proteins to yield a single-stranded oligonucleotide multimer complementary to the circular oligonucleotide template, wherein the oligonucleotide multimer comprises multiple copies of the selected oligonucleotide; and
(c) cleaving the oligonucleotide multimer at the cleavage site to produce the selected oligonucleotide having well-defined ends.
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Abstract
The present invention provides methods for synthesis, selection, and amplification of DNA and RNA oligonucleotides and analogs. The method for synthesizing an oligonucleotide involves: providing an effective amount of an isolated circular oligonucleotide template which comprises at least one copy of the desired oligonucleotide sequence linked to a cleavage site; providing an effective amount of an isolated oligonucleotide primer; annealing the primer to the circular template to form a primed circular template; and combining the primed circular template with an effective amount of at least two types of nucleotide triphosphates and an effective amount of a polymerase enzyme to form a nucleotide multimer complementary to the circular oligonucleotide template, wherein the nucleotide multimer comprises multiple copies of the oligonucleotide sequence joined end to end. Preferably, the nucleotide multimer is cleaved to produce oligonucleotides having well-defined ends.
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Citations
47 Claims
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1. A method for synthesizing a selected oligonucleotide having well-defined ends comprising:
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(a) annealing an effective amount of an oligonucleotide primer to a single-stranded circular template to yield a primed circular template, wherein the single-stranded circular template comprises (i) at least one copy of a nucleotide sequence complementary to the sequence of the selected oligonucleotide and (ii) at least one nucleotide effective to produce a cleavage site in the oligonucleotide multimer; (b) combining the primed circular template with an effective amount of at least two types of nucleotide triphosphates and an effective amount of a polymerase enzyme without the addition of auxiliary proteins to yield a single-stranded oligonucleotide multimer complementary to the circular oligonucleotide template, wherein the oligonucleotide multimer comprises multiple copies of the selected oligonucleotide; and (c) cleaving the oligonucleotide multimer at the cleavage site to produce the selected oligonucleotide having well-defined ends. - 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, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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Specification