High-Affinity DNA Targeting Using Readily Accessible Mimics of N2′-Functionalized 2′-Amino-α-L-LNA
作者:Saswata Karmakar、Brooke A. Anderson、Rie L. Rathje、Sanne Andersen、Troels B. Jensen、Poul Nielsen、Patrick J. Hrdlicka
DOI:10.1021/jo201095p
日期:2011.9.2
them mimic the DNA-hybridization properties of N2′-pyrene-functionalized 2′-amino-α-L-LNAs. For example, oligodeoxyribonucleotides (ONs) modified with 2′-O-(coronen-1-yl)methyluridine monomer Z, 2′-O-(pyren-1-yl)methyluridine monomer Y, or 2′-N-(pyren-1-ylmethyl)-2′-N-methylaminouridine monomer Q display prominent increases in thermal affinity toward complementary DNA relative to reference strands (average
N2'-芘官能化的 2'-氨基-α-L-LNA(锁核酸)由于芘部分的有利预组织用于杂交诱导的嵌入,因此对互补 DNA 靶标表现出非凡的亲和力。不幸的是,这些单体的合成具有挑战性(~20 步,<3% 的总产率),这阻碍了基于这些材料的 DNA 靶向应用的全面表征。获得更容易获得的功能模拟将是非常可取的。在这里,我们描述了一系列 O2'-嵌入剂功能化尿苷和 N2'-嵌入剂功能化 2'- N 的短合成路线-甲基-2'-氨基尿苷单体,并通过热变性、紫外-可见吸收和荧光光谱实验证明,其中一些模拟了 N2'-芘功能化 2'-氨基-α-L-的 DNA 杂交特性低噪声放大器。例如,寡脱氧核糖核苷酸(ONS)与2'-修饰ø - (coronen -1-基)甲基尿苷单体Ž,2'- ø - (芘-1-基)甲基尿苷单体Ý,或2'- ñ - (pyren- 1-ylmethyl)-2'- N - methylaminouridine
Pseudonucleotide comprising an intercalator
申请人:Christensen Bech Ulf
公开号:US20060014144A1
公开(公告)日:2006-01-19
The present invention relates to intercalator pseudonucleotides. Intercalator pseudonucleotides according to the invention are capable of being incorporated into the backbone of a nucleic acid or nucleic acid analogue and they comprise an intercalator comprising a flat conjugated system capable of co-stacking with nucleobases of DNA. The invention also relates to oligonucleotides or oligonucleotide analogues comprising at least one intercalator pseudo nucleotide. The invention furthermore relates to methods of synthesising intercalator pseudo nucleotides and methods of synthesising oligonucleotides or oligonucleotide analogues comprising at least one intercalator pseudonucleotide. In addtition, the invention describes methods of separating sequence specific DNA(s) from a mixture comprising nucleic acids, methods of detecting a sequence specific DNA (target DNA) in a mixture comprising nucleic acids and/or nucleic acid analogues and methods of detecting a sequence specific RNA in a mixture comprising nucleic acids and/or nucleic acid analogues. In particular said methods may involve the use of oligonucleotides comprising intercalator pseudo nucleotides. The invention furthermore relates to pairs of oligonucleotides or oligonucleotide analogues capable of hybridising to one another, wherein said pairs comprise at least one intercalator pseudonucleotide. Methods for inhibiting a DNAse and/or a RNAse and methods of modulating transcription of one or more specific genes are also described.
The present invention relates to intercalator pseudonucleotides. Intercalator pseudonucleotides according to the invention are capable of being incorporated into the backbone of a nucleic acid or nucleic acid analogue and they comprise an intercalator comprising a flat conjugated system capable of co-stacking with nucleobases of DNA. The invention also relates to oligonucleotides or oligonucleotide analogues comprising at least one intercalator pseudo nucleotide. The invention furthermore relates to methods of synthesising intercalator pseudo nucleotides and methods of synthesising oligonucleotides or oligonucleotide analogues comprising at least one intercalator pseudonucleotide. In addition, the invention describes methods of separating sequence specific DNA(s) from a mixture comprising nucleic acids, methods of detecting a sequence specific DNA (target DNA) in a mixture comprising nucleic acids and/or nucleic acid analogues and methods of detecting a sequence specific RNA in a mixture comprising nucleic acids and/or nucleic acid analogues. In particular said methods may involve the use of oligonucleotides comprising intercalator pseudo nucleotides. The invention furthermore relates to pairs of oligonucleotides or oligonucleotide analogues capable of hybridising to one another, wherein said pairs comprise at least one intercalator pseudonucleotide. Methods for inhibiting a DNAse and/or a RNAse and methods of modulating transcription of one or more specific genes are also described.
EMBODIMENTS OF A PROBE AND METHOD FOR TARGETING NUCLEIC ACIDS
申请人:Hrdlicka Patrick Jerzy
公开号:US20140220573A1
公开(公告)日:2014-08-07
Disclosed embodiments concern a probe comprising one or more pairs of monomers capable of targeting a nucleic acid target. The pair of monomers may be arranged in a manner that promotes thermoinstability of the probe complex, thus producing a probe capable of locating and/or detecting a target. The probe also may comprise one or more natural or non-natural nucleotides capable of Watson-Crick base pairing with an isosequential nucleic acid target. Particular disclosed embodiments concern a method of using the disclosed probe to target nucleic acids. In particular disclosed embodiments, the probe may be incubated with a target nucleic acid and then be detected.