DOUBLE-STRANDED CONFORMATIONAL POLYMORPHISM ANALYSIS
    13.
    发明公开
    DOUBLE-STRANDED CONFORMATIONAL POLYMORPHISM ANALYSIS 失效
    多态性的AT双构象分析

    公开(公告)号:EP0863998A1

    公开(公告)日:1998-09-16

    申请号:EP96937086.0

    申请日:1996-11-01

    申请人: NAXCOR

    IPC分类号: C12N15 C12Q1

    摘要: Double-stranded conformational polymorphism analysis is performed by combining a probe comprising a cross-linking agent and optionally a label with a sample having a target sequence, which may be complementary or have one or a few mismatches with respect to the probe sequence. After sufficient time for hybridization under mild or lesser stringency conditions, hybridized pairs are irradiated to induce cross-link formation by the cross-linking agent. The sample is then analyzed by denaturing gel electrophoresis where the rate of migration depends upon the degree of complementarity between the probe and the target. For corroboration, in a second experiment, the probe may be combined with the sample under high stringency conditions, where it is found that the formation of cross-linked probe/target is substantially lower for pairs having mismatches than for fully matched pairs. After cross-linking, the sample may be separated by gel electrophoresis, and the amount of cross-linked nucleic acid determined.

    NUCLEIC ACID SEQUENCE DETECTION EMPLOYING AMPLIFICATION PROBES
    14.
    发明公开
    NUCLEIC ACID SEQUENCE DETECTION EMPLOYING AMPLIFICATION PROBES 失效
    NUCLEIC检测中放大探针

    公开(公告)号:EP0796346A1

    公开(公告)日:1997-09-24

    申请号:EP95944246.0

    申请日:1995-12-22

    申请人: NAXCOR

    摘要: Methods and compositions are provided for detecting nucleic acid sequences. In particular, pairs of probes are employed, where the pair defines a substantially contiguous sequence on a target nucleic acid. Each of the pairs has a side chain which forms a stem of the two side chains which non-covalently binds and is capable of forming a cross-link upon activation, when the probes and sample nucleic acid are base paired. Cross-linking of the stems when unbound to complementary DNA is inhibited. Each of the nucleic acids is initially present as single stranded nucleic acid to allow for base pairing, so that the probes bind to homologous target nucleic acid. The assay mixture is activated to provide cross-linking, the double stranded nucleic acid melted, and the process of base pairing, activation and melting repeated, a sufficient number of cycles, to provide a detectable amount of cross-linked probes. To inhibit background cross-linking, the side chains may provide for duplex formation, where a portion of the side chain binds to a different portion of the side chain or the portion of the probe homologous to the target. Also provided are kits comprising reagents, as well as automatic devices, for carrying out the subject method.

    COUMARIN DERIVATIVES FOR USE AS NUCLEOTIDE CROSSLINKING REAGENTS
    15.
    发明公开
    COUMARIN DERIVATIVES FOR USE AS NUCLEOTIDE CROSSLINKING REAGENTS 失效
    用作核苷交联试剂的香豆素衍生物

    公开(公告)号:EP0466773A1

    公开(公告)日:1992-01-22

    申请号:EP90905935.0

    申请日:1990-03-23

    申请人: NAXCOR

    IPC分类号: C07H15 C07H17 C07H21

    CPC分类号: C07H21/00 C07H15/26

    摘要: L'invention concerne un nucléoside à photoactivation, comprenant une fraction de coumarine liée par son anneau de phényle à la position 1 d'une fraction de sucre de ribose ou de désoxyribose. L'analogue de nucléoside ainsi obtenu est habituellement utilisé comme groupe de photoréticulation, lorsqu'il est inséré dans un polynucléotide servant d'élément de remplacement d'une ou de plusieurs bases de nucléosides complémentaires, présentes dans une sonde utilisée dans une analyse d'hybridation.

    摘要翻译: 本发明涉及包含通过其在核糖或脱氧核糖部分的1-位上的苯环连接的香豆素部分的光活化核苷。 当插入用作测定中使用的探针中存在的一个或多个互补核苷碱基的替代物的多核苷酸时,由此获得的核苷类似物通常用作光交联基团。 杂交。