Method of detecting a nucleic acid
First Claim
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1. A method for detecting a first target nucleic acid molecule and a second target nucleic acid molecule in a collection of at least two nucleic acid molecules having different nucleotide sequences, the method comprising:
- providing a first oligonucleotide covalently linked to a first removable tag by a first photocleavable linker, and a second oligonucleotide covalently linked to a second removable tag by a second photocleavable linker, wherein the first and second photocleavable linkers are cleavable at different wavelengths;
contacting the first oligonucleotide and the second oligonucleotide with the collection of nucleic acid molecules in a single reaction under conditions which permit hybridization of the first oligonucleotide and the second oligonucleotide to complementary sequences in the collection of nucleic acid molecules, thereby forming a mixture of hybridized and non-hybridized oligonucleotides;
separating hybridized oligonucleotides from non-hybridized oligonucleotides;
removing the first tag from hybridized first oligonucleotides by irradiating the mixture of hybridized and non-hybridized oligonucleotides at a first wavelength, thereby cleavinthe first photocleavable linker;
identifying the first tag by its known chemical property, thereby detecting the first target nucleic acid molecule;
removing the second tag from hybridized second oligonucleotides by irradiating the mixture of hybridized and non-hybridized oligonucleotides at a second wavelength, thereby cleaving the second photocleavable linker; and
identifying the second tag by its known chemical property, thereby detecting the second target nucleic acid molecule in the collection of nucleic acid molecules.
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Abstract
Disclosed is a method of detecting specific nucleic acids using an oligonucleotide linked to a cleavable tag. The presence of a specific nucleic acid in a population of nucleic acids is determined by hybridizing an oligonucleotide containing the tag to a population of nucleic acids, separating hybridizing bound oligonucleotides, and then removing and identifying the tag. Also provided are compositions and kits comprising oligonucleotides linked to a cleavable tag.
15 Citations
16 Claims
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1. A method for detecting a first target nucleic acid molecule and a second target nucleic acid molecule in a collection of at least two nucleic acid molecules having different nucleotide sequences, the method comprising:
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providing a first oligonucleotide covalently linked to a first removable tag by a first photocleavable linker, and a second oligonucleotide covalently linked to a second removable tag by a second photocleavable linker, wherein the first and second photocleavable linkers are cleavable at different wavelengths;
contacting the first oligonucleotide and the second oligonucleotide with the collection of nucleic acid molecules in a single reaction under conditions which permit hybridization of the first oligonucleotide and the second oligonucleotide to complementary sequences in the collection of nucleic acid molecules, thereby forming a mixture of hybridized and non-hybridized oligonucleotides;
separating hybridized oligonucleotides from non-hybridized oligonucleotides;
removing the first tag from hybridized first oligonucleotides by irradiating the mixture of hybridized and non-hybridized oligonucleotides at a first wavelength, thereby cleavinthe first photocleavable linker;
identifying the first tag by its known chemical property, thereby detecting the first target nucleic acid molecule;
removing the second tag from hybridized second oligonucleotides by irradiating the mixture of hybridized and non-hybridized oligonucleotides at a second wavelength, thereby cleaving the second photocleavable linker; and
identifying the second tag by its known chemical property, thereby detecting the second target nucleic acid molecule in the collection of nucleic acid molecules. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16)
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9. A kit useful for detection of the presence of a specific nucleic acid sequence in a collection of nucleic acid sequences, the kit comprising one or more containers comprising a first container containing a first isolated nucleic acid composition comprising a first oligonucleotide sequence covalently linked to a first removable tag by a first photocleavable linker and a second container containing a second oligonucleotide sequence covalently linked to a second removable tag by a second photocleavable linker, wherein the first and the second photocleavable linkers are cleavable at different wavelengths and a distinct correlation between the first photocleavable linker and the sequence of the first oligonucleotide is known, and a distinct correlation between the second photocleavable linker and the sequence of the second oligonucleotide is known.
Specification