Coupled amplification and sequencing of DNA
First Claim
1. A process for sequencing DNA segments comprising:
- (a) exponentially and simultaneously synthesizing both truncated products and full length products starting from 3'"'"' ends of each of two complementary strands of the DNA segment which serve as a template, Said exponential and simultaneous synthesis using the following reagents;
(i) a first primer for annealing to the 3'"'"' end of one of said two complementary strands of the DNA segment,(ii) a second primer, which is different from the first primer, for annealing to the 3'"'"' end of the other of said two complementary strands of the DNA segment,(iii) a reaction buffer,(iv) a deoxyribonucleotide elongator for each of adenine, guanine, cytosine and thymine,(v) a thermally stable DNA polymerase and(vi) a dideoxynucleotide terminator for each of adenine, guanine, cytosine and thymine,carrying out said synthesis by thermal cycling to provide a sufficiently readable signal,separating out the resultant truncated products and full length products according to size, andselectively detecting truncated products and full length products synthesized from one or the other of said two complementary strands of the DNA segments.
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Abstract
A process for sequencing DNA segments having complementary strands comprising (a) synthesizing simultaneously truncated products and full-length products starting from both 3'"'"' ends of the complementary strands of the DNA segment, which serves as a template, by introducing specific oligonucleotide primers annealing to the 3'"'"' ends of both complementary strands of the DNA segment, a deoxyribonucleotide elongator for each of adenine, guanine, cytosine and thymine, a thermally stable DNA polymerase and a terminator for each of adenine, guanine, cytosine and thymine, (b) thermally cycling step (a), (c) separating out the resultant truncated products and full length products according to size, and (d) selectively detecting all truncated products and full length products according to size, and (e) selectively detecting all truncated products and full-length products generated from a given strand of template.
69 Citations
21 Claims
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1. A process for sequencing DNA segments comprising:
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(a) exponentially and simultaneously synthesizing both truncated products and full length products starting from 3'"'"' ends of each of two complementary strands of the DNA segment which serve as a template, Said exponential and simultaneous synthesis using the following reagents; (i) a first primer for annealing to the 3'"'"' end of one of said two complementary strands of the DNA segment, (ii) a second primer, which is different from the first primer, for annealing to the 3'"'"' end of the other of said two complementary strands of the DNA segment, (iii) a reaction buffer, (iv) a deoxyribonucleotide elongator for each of adenine, guanine, cytosine and thymine, (v) a thermally stable DNA polymerase and (vi) a dideoxynucleotide terminator for each of adenine, guanine, cytosine and thymine, carrying out said synthesis by thermal cycling to provide a sufficiently readable signal, separating out the resultant truncated products and full length products according to size, and selectively detecting truncated products and full length products synthesized from one or the other of said two complementary strands of the DNA segments. - View Dependent Claims (2, 3, 4, 5, 11, 12, 13, 15, 16, 20, 21)
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6. A process for determining a base sequence of a DNA segment comprising
(a) amplifying in vitro said DNA, to obtain at least 10 femtomoles of amplification products, to form a template, (b) aliquoting the resultant template from (a) into two aliquots, (c) adding to each aliquot from (b) a labeled primer specific for each end of the template, (d) subaliquoting each of the two aliquots from (c) into two sets of five aliquots, (e) for each set of aliquots from (d), adding a dideoxynucleotide terminator for guanine to one aliquot, adding a dideoxynucleotide terminator for adenine to one aliquot, adding a dideoxynucleotide terminator for cytosine to one aliquot and adding a dideoxynucleotide terminator for thymine to one aliquot and maintaining one aliquot as a control, (f) thermally cycling each of the aliquots from (e), and (g) separating out the resultant molecules according to size and selectively detecting products synthesized from one or the other of said strands of said amplification products to determine the sequence.
Specification