Selective terminal tagging of nucleic acids
First Claim
1. A method for adding a terminal sequence tag to nucleic acid molecules, the method comprising:
- contacting the nucleic acid molecules with a mixture of oligonucleotides, each oligonucleotide having a sequence tag template, a random sequence and a blocked 3′
terminus, under conditions in which the random sequence anneals with the nucleic acid molecules and the nucleic acid molecules are extended to form first DNA or RNA templates using the sequence tag template as template.
6 Assignments
0 Petitions
Accused Products
Abstract
A method is provided for adding a terminal sequence tag to nucleic acid molecules for use in RNA or DNA amplification. The method involves contacting with a mixture of oligonucleotides, each having a sequence tag template, a random sequence and a blocked 3′ terminus, under conditions such that, the random sequence anneals with the nucleic acid molecules and the nucleic acid molecules are extended using the sequence tag template as template. For synthesis of RNA from DNA molecules having terminal sequence tags, the method includes forming DNA templates having a double stranded promoter sequence and synthesizing RNA from the DNA templates. For amplification of sequences from DNA molecules having terminal sequence tags, the method includes forming DNA templates by extension of one primer having a sequence that is complementary to the terminal sequence tag and another primer having a sequence that is derived form one of the DNA molecules.
118 Citations
42 Claims
-
1. A method for adding a terminal sequence tag to nucleic acid molecules, the method comprising:
- contacting the nucleic acid molecules with a mixture of oligonucleotides, each oligonucleotide having a sequence tag template, a random sequence and a blocked 3′
terminus, under conditions in which the random sequence anneals with the nucleic acid molecules and the nucleic acid molecules are extended to form first DNA or RNA templates using the sequence tag template as template. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 28, 29, 30)
- contacting the nucleic acid molecules with a mixture of oligonucleotides, each oligonucleotide having a sequence tag template, a random sequence and a blocked 3′
-
21. A method for adding a terminal sequence tag to the 3′
- -end of a first nucleic acid molecule, the method comprising;
contacting the first nucleic acid molecule with a mixture of oligonucleotides, each oligonucleotide having a sequence tag template, and a blocked random sequence at its 3′
terminus, under conditions in which the random sequence of at least one of the oligonucleotides anneals with the first nucleic acid molecule and the first nucleic acid molecule is extended to form a first extended nucleic acid molecule using the sequence tag template as template. - View Dependent Claims (22, 23, 24)
- -end of a first nucleic acid molecule, the method comprising;
-
25. A method for synthesizing sense RNA from DNA molecules comprising forming first DNA templates by contacting the DNA molecules with a mixture of oligonucleotides, each having a sequence tag template, a random sequence and a blocked 3′
- terminus, under conditions such that, the DNA molecules anneal with the random sequence and are extended using the sequence tag template as template;
forming first DNA templates having a 5′
double-stranded promoter sequence by contacting the DNA molecules with a mixture of oligonucleotides, each having a promoter sequence, a sequence tag template, a random sequence and a blocked 3′
terminus, under conditions such that, the DNA molecules anneal with the random sequence and are extended using the promoter sequence and the sequence tag templates as template;
forming second DNA templates having a 5′
double-stranded promoter sequence by contacting the first DNA templates with a second oligonucleotide, containing a sequence tag complement to the sequence tag contained in the first DNA templates and a promoter sequence, under conditions such that, the first DNA templates anneal with the second oligonucleotide and are extended using the promoter sequence as template;
forming second DNA templates having a 5′
double-stranded promoter sequence by contacting first DNA templates with a second oligonucleotide, containing a sequence tag complement to the sequence tag contained in the first DNA templates, a promoter sequence and a blocked 3′
terminus, under conditions such that, the first DNA templates anneal with the second oligonucleotide and are extended using the promoter sequence as template; and
synthesizing RNA from the first or second DNA templates having a 5′
double-stranded promoter sequence. - View Dependent Claims (26, 27)
- terminus, under conditions such that, the DNA molecules anneal with the random sequence and are extended using the sequence tag template as template;
-
31. A composition comprising a nucleic acid molecule having annealed at its 3′
- -end an oligonucleotide blocked from replication at its 3′
-end and a sequence tag template at its 5′
-end, the sequence tag template extending past the 3′
-end of the nucleic acid molecule. - View Dependent Claims (32, 33, 34, 35)
- -end an oligonucleotide blocked from replication at its 3′
-
36. A kit for selective terminal tagging of nucleic acid molecules in a sample, the kit comprising:
- (a) an oligonucleotide sequence tag template further comprising a tag sequence, and a random sequence for binding terminally said nucleic acid molecules, wherein the 3′
-end of said oligonucleotide sequence tag template is blocked to preclude extension thereof;
(b) a DNA polymerase and reagents for extending the 3′
terminal ends of said nucleic acid molecules;
(c) size selection columns and buffers for removal of unused oligonucleotide sequence tag template; and
(d) instructions for hybridizing said oligonucleotide sequence tag template to nucleic molecules of said sample, extending said nucleic acid molecules with the DNA polymerase using the oligonucleotide sequence tag templates as template, and creating first DNA or RNA templates with double-stranded regions corresponding in sequence to at least a sequence tag region. - View Dependent Claims (37, 38, 39, 40, 41, 42)
- (a) an oligonucleotide sequence tag template further comprising a tag sequence, and a random sequence for binding terminally said nucleic acid molecules, wherein the 3′
Specification