Use of nucleic acid analogues in the inhibition of nucleic acid
amplification
    2.
    发明授权
    Use of nucleic acid analogues in the inhibition of nucleic acid amplification 失效
    核酸类似物在抑制核酸扩增中的应用

    公开(公告)号:US5891625A

    公开(公告)日:1999-04-06

    申请号:US338535

    申请日:1995-03-10

    CPC分类号: C12Q1/6848 C12Q1/686

    摘要: Nucleic acid analogues such as peptide-nucleic acids (PNAs) which hybridize strongly to nucleic acids are used to inhibit nucleic acid amplification procedures such as PCR. False positives in subsequent PCR assays are prevented by hybridizing a PNA to PCR amplification products. Assays capable of discriminating between single base mutants are conducted by using a PNA hybridizing to one of the two allelic forms to inhibit a PCR amplification of that form selectively. Asymmetric PCR amplifications are carried out by starting a PCR symmetrically using like quantities of forward and reverse primers, and, once the amplification is established, disabling one primer by hybridizing a PNA thereto.

    摘要翻译: PCT No.PCT / EP93 / 01435 Sec。 371 1995年3月10日 102(e)1995年3月10日PCT PCT 1993年6月7日PCT公布。 公开号WO93 / 25706 日期1993年12月23日使用与核酸强烈杂交的核酸类似物如肽 - 核酸(PNA)来抑制核酸扩增程序如PCR。 通过将PNA与PCR扩增产物杂交来防止后续PCR测定中的假阳性。 能够区分单碱基突变体的测定通过使用与两种等位基因形式中的一种杂交的PNA进行,以选择性地抑制该形式的PCR扩增。 通过使用类似量的正向引物和反向引物对称地进行PCR来进行不对称PCR扩增,一旦扩增成功,通过与PNA杂交就能使一个引物失活。

    Nucleic acid analogue induced transcription of double stranded DNA
    3.
    发明授权
    Nucleic acid analogue induced transcription of double stranded DNA 失效
    核酸类似物诱导双链DNA转录

    公开(公告)号:US5837459A

    公开(公告)日:1998-11-17

    申请号:US653605

    申请日:1996-05-24

    摘要: RNA is transcribed from a double stranded DNA template by forming a complex by hybridizing to the template at a desired transcription initiation site one or more oligonucleic acid analogues of the PNA type capable of forming a transcription initiation site with the DNA and exposing the complex to the action of a DNA dependant RNA polymerase in the presence of nucleoside triphosphates. Equal length transcripts may be obtained by placing a block to transcription downstream from the initiation site or by cutting the template at such a selected location. The initiation site is formed by displacement of one strand of the DNA locally by the PNA hybridization.

    摘要翻译: 通过在期望的转录起始位点与模板杂交形成复合物,RNA可以从双链DNA模板转录成能够与DNA形成转录起始位点的一种或多种PNA型寡核酸类似物,并将该复合物暴露于 在DNA核苷三磷酸存在下DNA依赖性RNA聚合酶的作用。 可以通过将起始位点的下游位置嵌段转移到转录起始位点或通过在这样的选择位置切割模板来获得相等的长度转录物。 通过PNA杂交局部置换DNA的一条链来形成起始位点。