CAPTURE OF TARGET DNA AND RNA BY PROBES COMPRISING INTERCALATOR MOLECULES
First Claim
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1. A method for capturing a target polynucleotide from a sample obtained from biological material, the method comprising the steps of:
- (i) providing a double stranded target polynucleotide;
(ii) destabilizing said double stranded target polynucleotide by removing one or more bases, such as one or more of the nucleobases A, T, U, C or G, 5-hydroxymethyl-dC, 5-methylcytosine (m5C), pseudouridine (Ψ
), dihydrouridine (D), inosine (I), 7-methylguanosine (m7G), hypoxanthine, xanthine and their 2′
-O-Methyl-derivatives and/or N-Methyl-derivatives from said target polynucleotide, thereby generating one or more abasic sites and(iii) denaturing said destabilized double stranded target polynucleotide to generate single stranded target polynucleotide, and(iv) capturing said single stranded target polynucleotide with a complementary oligonucleotide probe having a length of 15 to 35 nucleotides, wherein the complementary oligonucleotide probe comprises one or more intercalator molecules inserted into the backbone-structure of said oligonucleotide probe, wherein said one or more intercalator molecule(s) fit morphologically into the one or more abasic sites of the complementary polynucleotide target sequence.
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Abstract
The present invention relates to a technology for specific capture of single stranded target Polynucleotide by a complementary probe comprising one or more intercalator molecules. The method further involves removal of one or more types of bases in the single stranded target Polynucleotide prior to interaction with the complementary probe. This results in generation of one or more abasic sites which can interact with and/or into where the intercalator molecule can be inserted.
19 Citations
81 Claims
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1. A method for capturing a target polynucleotide from a sample obtained from biological material, the method comprising the steps of:
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(i) providing a double stranded target polynucleotide; (ii) destabilizing said double stranded target polynucleotide by removing one or more bases, such as one or more of the nucleobases A, T, U, C or G, 5-hydroxymethyl-dC, 5-methylcytosine (m5C), pseudouridine (Ψ
), dihydrouridine (D), inosine (I), 7-methylguanosine (m7G), hypoxanthine, xanthine and their 2′
-O-Methyl-derivatives and/or N-Methyl-derivatives from said target polynucleotide, thereby generating one or more abasic sites and(iii) denaturing said destabilized double stranded target polynucleotide to generate single stranded target polynucleotide, and (iv) capturing said single stranded target polynucleotide with a complementary oligonucleotide probe having a length of 15 to 35 nucleotides, wherein the complementary oligonucleotide probe comprises one or more intercalator molecules inserted into the backbone-structure of said oligonucleotide probe, wherein said one or more intercalator molecule(s) fit morphologically into the one or more abasic sites of the complementary polynucleotide target sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 45, 46, 51)
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31. (canceled)
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44. (canceled)
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47-50. -50. (canceled)
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52-54. -54. (canceled)
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55. An oligonucleotide probe consisting of 15 to 35 nucleotides, wherein the oligonucleotide probe comprises at least 2 intercalator molecules which fit morphologically into abasic sites of a complementary polynucleotide target, and wherein the nucleotides adjacent to the intercalator molecules of the oligonucleotide probe are complementary to the polynucleotide target.
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56-79. -79. (canceled)
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80. A complex comprising an oligonucleotide probe and a complementary polynucleotide target comprising at least two abasic sites,
wherein the oligonucleotide probe has a length of 15 to 35 nucleotides and comprises at least two intercalator molecules inserted into the backbone-structure of said oligonucleotide probe, and wherein said at least two intercalator molecules fit morphologically into the abasic sites of the complementary polynucleotide target.
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81-104. -104. (canceled)
Specification