Amplification and detection of ribonucleic acids
First Claim
1. A method for detecting an RNA molecule, comprising:
- (a) fragmenting a plurality of RNA molecules to generate a plurality of RNA fragments;
(b) forming a single ligation reaction mixture containing(i) the plurality of RNA fragments, and(ii) a plurality of a first double-stranded nucleic acid adaptor, and(iii) a plurality of a second double-stranded nucleic acid adaptor, and(iv) an RNA ligase,wherein a first strand of the first double-stranded nucleic acid adaptors of the plurality include at least two ribonucleosides at the 3′
end, and a second strand of the first double-stranded nucleic acid adaptors of the plurality include a first single-stranded portion at the 5′
end, andwherein a first strand of the second double-stranded nucleic acid adaptors of the plurality include a terminal 5′
phosphate group, and a second strand of the second double-stranded nucleic acid adaptors of the plurality include a second single-stranded portion at the 3′
end, and wherein the first and the second single-stranded portions contain a nucleotide sequence that hybridizes to a portion of at least one of the RNA fragments; and
(c) producing at least one RNA ligation product by ligating the first double-stranded adaptor to a first end of the at least one of the RNA fragments and ligating the second double-stranded adaptor to a second end of the at least one of the RNA fragments.
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Accused Products
Abstract
Compositions, methods, and kits for detecting one or more species of RNA molecules are disclosed. In one embodiment, a first adaptor and a second adaptor are ligated to the RNA molecule using a polypeptide comprising double-strand specific RNA ligase activity, without an intervening purification step. The ligated product is reverse transcribed, then at least some of the ribonucleosides in the reverse transcription product are removed. Primers are added and amplified products are generated. In certain embodiments, the sequence of at least part of at least one species of amplified product is determined and at least part of the corresponding RNA molecule is determined. In some embodiments, at least some of the amplified product species are detected, directly or indirectly, allowing the presence and/or quantity of the RNA molecule of interest to be determined.
30 Citations
20 Claims
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1. A method for detecting an RNA molecule, comprising:
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(a) fragmenting a plurality of RNA molecules to generate a plurality of RNA fragments; (b) forming a single ligation reaction mixture containing (i) the plurality of RNA fragments, and (ii) a plurality of a first double-stranded nucleic acid adaptor, and (iii) a plurality of a second double-stranded nucleic acid adaptor, and (iv) an RNA ligase, wherein a first strand of the first double-stranded nucleic acid adaptors of the plurality include at least two ribonucleosides at the 3′
end, and a second strand of the first double-stranded nucleic acid adaptors of the plurality include a first single-stranded portion at the 5′
end, andwherein a first strand of the second double-stranded nucleic acid adaptors of the plurality include a terminal 5′
phosphate group, and a second strand of the second double-stranded nucleic acid adaptors of the plurality include a second single-stranded portion at the 3′
end, and wherein the first and the second single-stranded portions contain a nucleotide sequence that hybridizes to a portion of at least one of the RNA fragments; and(c) producing at least one RNA ligation product by ligating the first double-stranded adaptor to a first end of the at least one of the RNA fragments and ligating the second double-stranded adaptor to a second end of the at least one of the RNA fragments. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification