Non-aggregating non-quenching oligomer comprising nucelotide analogs, method of synthesis and use thereof
First Claim
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1. An oligonucleotide probe comprising a 5′
- -end, a 3′
-end, one or more detectable fluorescent labels, and a qenching agent which qenches the fluorescence emission of the one or more fluorescent labels wherein the probe comprises at least 4 consecutive guanine residues in which at least one of the four consecutive guanine residues has been replaced by a PPG residue, the probe exhibiting reduced quenching of the one or more fluorescent labels due to said replacement of residues.
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Abstract
The invention provides compositions and methods for improved hybridization analysis utilizing DNA, RNA, PNA and chimeric oligomers in which one or more purine bases are substituted by a pyrazolo[5,4-d]pyrimidine or by a 7-deazapurine purine analogue. Reduced self-aggregation and reduced fluorescence quenching are obtained when the oligomers are used in various methods involving hybridization. Methods of synthesis, as well as novel synthetic precursors, are also provided.
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18 Claims
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1. An oligonucleotide probe comprising a 5′
- -end, a 3′
-end, one or more detectable fluorescent labels, and a qenching agent which qenches the fluorescence emission of the one or more fluorescent labels wherein the probe comprises at least 4 consecutive guanine residues in which at least one of the four consecutive guanine residues has been replaced by a PPG residue, the probe exhibiting reduced quenching of the one or more fluorescent labels due to said replacement of residues. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- -end, a 3′
Specification