Nucleic acid detection methods using universal priming
First Claim
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1. A method for determining the identification of a nucleotide at a detection position in a target sequence, comprising:
- (a) hybridizing a target sequence with a probe set to form a hybridization complex, said probe set comprising a first probe having a first portion containing an upstream universal priming site (UUP), a second portion containing a first target specific sequence and a detection position, and a second probe having a first portion containing a downsteam universal priming site (DUP) and a second portion containing a second target specific sequence, wherein said probe set further comprises at least one adapter sequence;
(b) contacting said hybridization complex with a ligase to form a ligated hybridization complex;
(c) removing non-hybridized probe sets;
(d) amplifying said ligated hybridization complex with a universal primer pair to form amplicons;
(e) immobilizing said amplicons to a solid support;
(f) contacting said immobilized amplicons with a detection label, wherein the mass of said detection label is indicative of said nucleotide at said detection position, and (g) determining a nucleotide at said detection position.
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Abstract
The present invention is directed to providing sensitive and accurate assays for genotyping with a minimum or absence of target-specific amplification.
22 Citations
66 Claims
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1. A method for determining the identification of a nucleotide at a detection position in a target sequence, comprising:
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(a) hybridizing a target sequence with a probe set to form a hybridization complex, said probe set comprising a first probe having a first portion containing an upstream universal priming site (UUP), a second portion containing a first target specific sequence and a detection position, and a second probe having a first portion containing a downsteam universal priming site (DUP) and a second portion containing a second target specific sequence, wherein said probe set further comprises at least one adapter sequence;
(b) contacting said hybridization complex with a ligase to form a ligated hybridization complex;
(c) removing non-hybridized probe sets;
(d) amplifying said ligated hybridization complex with a universal primer pair to form amplicons;
(e) immobilizing said amplicons to a solid support;
(f) contacting said immobilized amplicons with a detection label, wherein the mass of said detection label is indicative of said nucleotide at said detection position, and (g) determining a nucleotide at said detection position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for determining the identification of nucleotides at detection positions in a plurality of target sequences, comprising:
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(a) hybridizing a plurality of target sequences with a plurality of probe sets to form a plurality of hybridization complexes, each of said probe sets within said plurality comprising a first probe having a first portion containing an upstream universal priming site (UUP), a second portion containing a first target specific sequence and a detection position, and a second probe having a first portion containing a downsteam universal priming site (DUP) and a second portion containing a second target specific sequence, wherein each of said probe sets within said plurality of probe sets further comprises at least one adapter sequence;
(b) contacting said plurality of hybridization complexes with a ligase to form ligated hybridization complexes;
(c) removing non-hybridized probe sets;
(d) amplifying said plurality of ligated hybridization complexes with a plurality of universal primer pairs to form a plurality of amplicons;
(e) immobilizing said plurality of amplicons to a solid support;
(f) contacting said plurality of immobilized amplicons with a plurality of detection labels, wherein the mass of said detection labels is indicative of a nucleotide at said detection position, and (g) determining a nucleotide at said detection position. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. A method of determining the identification of a nucleotide at a detection position in a target sequence comprising a first target domain adjacent to said detection position and a second target domain comprising said detection position, wherein said method comprises:
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(a) hybridizing a first ligation probe to said first target domain, said first ligation probe comprising;
(i) a first portion comprising an upstream universal priming site (UUP); and
(ii) a second portion comprising a first target-specific sequence comprising a first base at an interrogation position; and
(b) hybridizing a second ligation probe to said second target domain, said second ligation probe comprising;
(i) a third portion comprising a downstream universal priming site (DUP); and
(ii) a fourth portion comprising a second target-specific sequence;
wherein if said first base is complementary to said nucleotide at said detection position, a ligation complex is formed, and wherein at least one of said first and second ligation probes comprises a fifth portion comprising a distinct adapter sequence;
(c) providing a ligase that ligates said first and second ligation probes to form a ligated probe;
(d) removing non-hybridized probes;
(e) amplifying said ligated probe using said UUP and said DUP to generate a plurality of amplicons;
(f) immobilizing said amplicons to a solid support;
(g) contacting said immobilized amplicons with a detection label, wherein the mass of said detection label is indicative of said nucleotide at said detection position, and (h) determining the nucleotide at said detection position. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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Specification