Detecting single nucleotide polymorphism using hydrolysis probes with 3′ hairpin structure
First Claim
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1. A method for detecting a single nucleotide polymorphism (SNP) in a target nucleic acid in a sample, the method comprising:
- performing an amplifying step comprising contacting the sample with a primer comprising a first nucleic acid sequence to produce an amplification product comprising a region containing the SNP if the target nucleic acid is present in the sample;
adding a SNP specific hydrolysis probe comprising a second nucleic acid sequence complementary to the region containing the SNP of the amplification product into the sample and performing a hybridizing step comprising contacting the amplification product with the SNP specific hydrolysis probe if the target nucleic acid is present in the sample, the SNP specific hydrolysis probe comprising a donor fluorescent moiety and an acceptor moiety of the donor fluorescent moiety, a 5′
end and a 3′
end, and a hairpin structure located on the 3′
end, the hairpin structure comprising a region of non-naturally occurring nucleic acid sequence which is located on the 3′
end of the hairpin structure and comprises one or more non-naturally occurring nucleotides, wherein the acceptor moiety is in an internal position of the SNP specific hydrolysis probe; and
detecting the presence or absence of the amplification product, wherein the presence of the amplification products is indicative of the presence of the SNP in the target nucleic acid.
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Abstract
Methods for the rapid detection of the presence or absence of a SNP in a target nucleic acid in a sample are described. The methods can include performing an amplifying step, a hybridizing step utilizing a SNP specific hydrolysis probe including a hairpin structure toward the 3′ end, and a detecting step. Furthermore, SNP specific hydrolysis probe including a hairpin structure toward the 3′ end, along with kits are provided that are designed for the detection of a SNP in a target nucleic acid.
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6 Claims
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1. A method for detecting a single nucleotide polymorphism (SNP) in a target nucleic acid in a sample, the method comprising:
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performing an amplifying step comprising contacting the sample with a primer comprising a first nucleic acid sequence to produce an amplification product comprising a region containing the SNP if the target nucleic acid is present in the sample; adding a SNP specific hydrolysis probe comprising a second nucleic acid sequence complementary to the region containing the SNP of the amplification product into the sample and performing a hybridizing step comprising contacting the amplification product with the SNP specific hydrolysis probe if the target nucleic acid is present in the sample, the SNP specific hydrolysis probe comprising a donor fluorescent moiety and an acceptor moiety of the donor fluorescent moiety, a 5′
end and a 3′
end, and a hairpin structure located on the 3′
end, the hairpin structure comprising a region of non-naturally occurring nucleic acid sequence which is located on the 3′
end of the hairpin structure and comprises one or more non-naturally occurring nucleotides, wherein the acceptor moiety is in an internal position of the SNP specific hydrolysis probe; anddetecting the presence or absence of the amplification product, wherein the presence of the amplification products is indicative of the presence of the SNP in the target nucleic acid. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification