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    • 65. 发明授权
    • Reagent and method for the detection of a nucleotide sequence with
signal amplification
    • 用于检测具有信号放大的核苷酸序列的试剂和方法
    • US5695936A
    • 1997-12-09
    • US433505
    • 1995-06-14
    • Bernard MandrandPhilippe CrosThierry DelairMarie-Helene CharlesMarie-Noelle EroutChristian Pichot
    • Bernard MandrandPhilippe CrosThierry DelairMarie-Helene CharlesMarie-Noelle EroutChristian Pichot
    • C08G81/02C12Q1/68
    • C12Q1/6813C08G81/02C12Q1/682
    • Methods for the detection of a nucleotide sequence of interest comprising at least one nucleotide probe marked with a tracer. The methods comprise use of a reagent essentially comprising a linear backbone copolymer having lateral substituents, whose chain consists of a first type of repetitive unit and at least one other type of repetitive unit, in which at least one part of the units of the first type have a lateral substituent comprising a nucleotide unit, such a lateral substituent not being present on the other types of units. Each of said nucleotide units, all of which are identical, comprise at least one nucleotide sequence capable of hybridizing with said sequence of interest and nucleotide sequence capable of hybridizing with a probe, the reagent containing on average more than two of said nucleotide units, in molar equivalents, per mole of polymer. Such a reagent enables signal amplification to be obtained, and therefor lowers the sensitivity threshold. Application, in particular, in the production of tests for the detection of pathogenic organisms, or in the diagnosis of genetic diseases.
    • PCT No.PCT / FR94 / 01084第 371 1995年6月14日第 102(e)1995年6月14日PCT PCT 1994年9月15日PCT公布。 WO95 / 08000 PCT出版物 1995年3月23日的方法检测目标核苷酸序列的方法包括用示踪剂标记的至少一个核苷酸探针。 所述方法包括使用基本上包含具有侧向取代基的线性主链共聚物的试剂,其链由第一类型的重复单元和至少一种其它类型的重复单元组成,其中第一类型的单元的至少一部分 具有包含核苷酸单元的侧向取代基,这样的侧向取代基不存在于其它类型的单元上。 所述全部相同的所述核苷酸单元包含至少一个能够与所述感兴趣序列杂交的核苷酸序列和能够与探针杂交的核苷酸序列,所述试剂平均包含两个以上的所述核苷酸单元, 摩尔当量,每摩尔聚合物。 这样的试剂能够获得信号放大,从而降低灵敏度阈值。 特别是应用于生产用于检测病原体的检测或遗传疾病的诊断。