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    • 3. 发明授权
    • Hybridization assay signal enhancement
    • 杂交测定信号增强
    • US6103474A
    • 2000-08-15
    • US183619
    • 1998-10-30
    • Douglas J. DellingerSueAnn C. DahmDiane D. IlsleyRobert A. AchMark A. Troll
    • Douglas J. DellingerSueAnn C. DahmDiane D. IlsleyRobert A. AchMark A. Troll
    • C12Q1/68C07H21/02C07H21/04C12N15/00
    • C12Q1/682
    • A signal amplification method for detecting a target nucleic acid analyte having a homopolymeric region and a target sequence includes steps of: contacting an analyte under hybridizing conditions with a multiplicity of reporter probes, each reporter probe including a signal region and an oligonucleotide sequence which is complementary to and capable of forming a stable hybrid with the analyte homopolymeric region to form an analyte:reporter probe hybrid; and forming an analyte:capture probe hybrid by contacting the analyte target sequence with a capture probe under hybridizing conditions. The analyte:reporter probe hybrid may formed prior to contacting the analyte target sequence with the capture probe, so the result of contacting the analyte target sequence with the capture probe results in formation of an analyte:reporter probe:capture probe complex. The analyte:capture probe hybrid may be immobilized on a solid generally planar surface in an array format. Multiple reporter probes may form triple helix structures for further signal enhancement. Multiply-labeled hairpin reporter probes may be employed according to the invention. Also, a kit for carrying out the invention includes one or more capture probes immobilized on a surface, reporter probes each having a signal region and a sequence for binding analyte homopolymer regions, and, optionally, reagents for addition of homopolymer regions to nucleic acid analytes and for carrying out the hybridization reaction.
    • 用于检测具有均聚区和靶序列的靶核酸分析物的信号扩增方法包括以下步骤:在杂交条件下与多个报道探针接触分析物,每个报道探针包括信号区和互补的寡核苷酸序列 并且能够与分析物均聚区形成稳定的杂交体以形成分析物:报道探针杂交体; 并通过在杂交条件下将分析物靶序列与捕获探针接触来形成分析物:捕获探针杂交体。 在将分析物靶序列与捕获探针接触之前可以形成分析物:报告物探针杂交体,因此将分析物靶序列与捕获探针接触的结果导致分析物的形成:报道探针:捕获探针复合物。 分析物:捕获探针杂交体可以以阵列形式固定在固体大体上平坦的表面上。 多个报道探针可以形成用于进一步信号增强的三重螺旋结构。 根据本发明,可以使用多重标记的发夹报道探针。 此外,用于实施本发明的试剂盒包括固定在表面上的一种或多种捕获探针,各自具有信号区域的报道探针和用于结合分析物均聚物区域的序列,以及任选的用于向核酸分析物加入均聚物区域的试剂 并用于进行杂交反应。
    • 8. 发明授权
    • Precursors for two-step polynucleotide synthesis
    • 两步多核苷酸合成的前体
    • US07427679B2
    • 2008-09-23
    • US10652048
    • 2003-08-30
    • Douglas J. DellingerAgnieszka B. SierzchalaMarvin H. Caruthers
    • Douglas J. DellingerAgnieszka B. SierzchalaMarvin H. Caruthers
    • C07H19/10C07H19/20
    • C07H21/00C07H19/00Y02P20/55
    • Precursors for use in the synthesis of polynucleotides are disclosed. The precursors include a heterocyclic base having an exocyclic amine group and a substituted or unsubstituted triaryl methyl protecting group bound to the exocyclic amine group. In particular embodiments, the precursor has the structure: wherein: O and H represent oxygen and hydrogen, respectively, R1 is hydrido, hydroxyl, protected hydroxyl, lower alkyl, modified lower alkyl, or alkoxy, one of R2 or R3 is a hydroxyl protecting group; and the other of R2 or R3 is a reactive group capable of reacting with a reactive site hydroxyl, Base is a heterocyclic base having an exocyclic amine group, and Tram is a triaryl methyl group having the structure (V) wherein the broken line represents a bond to the amino nitrogen of the exocyclic amine group, and R4, R5 and R6 are independently selected from unsubstituted or substituted aryl groups, provided that at least one of R4, R5, and R6 is an aryl group other than phenyl and other than substituted phenyl.
    • 公开了用于合成多核苷酸的前体。 前体包括具有环外胺基的杂环碱基和与环外胺基结合的取代或未取代的三芳基甲基保护基。 在具体实施方案中,前体具有以下结构:其中:O和H分别表示氧和氢,R 1是氢,羟基,被保护的羟基,低级烷基,经修饰的低级烷基或烷氧基,R 2或R 3之一是 羟基保护基; R 2或R 3中的另一个为可与反应性位点羟基反应的反应性基团,碱基为具有环外胺基的杂环碱基,Tram为具有结构(V)的三芳基甲基,其中虚线 表示与环外胺基团的氨基氮的键,并且R 4,R 5和R 6独立地选自未取代或取代的芳基,条件是R 4,R 5和R 6中的至少一个是芳基 除苯基以外的基团,而不是取代的苯基。