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    • 1. 发明申请
    • Probe Based Nucleic Acid Detection
    • 基于探针的核酸检测
    • US20130045881A1
    • 2013-02-21
    • US13467933
    • 2012-05-09
    • Kenneth J. LivakStacey N. MyersJun WangXiaohui Wang
    • Kenneth J. LivakStacey N. MyersJun WangXiaohui Wang
    • G01N21/64C40B30/04
    • C12Q1/6818C12Q2525/151
    • The invention provides a method for detecting a target nucleotide sequence by tagging the nucleotide sequence with a nucleotide tag, providing a probe oligonucleotide with a melting temperature Tm1, comprising a regulatory sequence and a nucleotide tag recognition sequence; incorporating the probe oligonucleotide into the tagged polynucleotide in a polynucleotide amplification reaction, providing a regulatory oligonucleotide with a melting temperature Tm2, comprising a sequence segment that is at least partially complementary to the regulatory sequence, amplifying the tagged target nucleic acid sequence in a PCR amplification reaction using the probe oligonucleotide as a primer, and detecting the amplification product; wherein Tm1 and Tm2 are higher than the annealing temperature associated with the polynucleotide amplification reaction.
    • 本发明提供了通过用核苷酸标签标记核苷酸序列来检测靶核苷酸序列的方法,提供了具有调节序列和核苷酸标签识别序列的融解温度Tm1的探针寡核苷酸; 在多核苷酸扩增反应中将探针寡核苷酸掺入标记的多核苷酸中,提供具有解链温度Tm2的调节性寡核苷酸,其包含与调节序列至少部分互补的序列片段,在PCR扩增中扩增标记的靶核酸序列 使用探针寡核苷酸作为引物的反应,检测扩增产物; 其中Tm1和Tm2高于与多核苷酸扩增反应相关的退火温度。
    • 5. 发明授权
    • Hybridization assay using self-quenching fluorescence probe
    • 使用自熄荧光探针的杂交测定
    • US6030787A
    • 2000-02-29
    • US207170
    • 1998-12-07
    • Kenneth J. LivakSusan J. A. FloodJeffrey MamoroKhairuzzaman Bashar Mullah
    • Kenneth J. LivakSusan J. A. FloodJeffrey MamoroKhairuzzaman Bashar Mullah
    • C12N15/09C07H21/00C12N15/00C12Q1/68C07H19/04C07H21/04
    • C12Q1/6818C12Q1/6834C12Q1/6837
    • A hybridization assay is provided which uses an oligonucleotide probe which includes a fluorescent reporter molecule and a quencher molecule capable of quenching the fluorescence of the reporter molecule. The oligonucleotide probe is constructed such that the probe exists in at least one single-stranded conformation when unhybridized where the quencher molecule is near enough to the reporter molecule to quench the fluorescence of the reporter molecule. The oligonucleotide probe also exists in at least one conformation when hybridized to a target polynucleotide where the quencher molecule is not positioned close enough to the reporter molecule to quench the fluorescence of the reporter molecule. By adopting these hybridized and unhybridized conformations, the reporter molecule and quencher molecule on the probe exhibits different fluorescence signal intensities when the probe is hybridized and unhybridized. As a result, it is possible to determine whether the probe is hybridized or unhybridized based on a change in the fluorescence intensity of the reporter molecule, the quencher molecule, or a combination thereof. In addition, because the probe can be designed such that the quencher molecule quenches the reporter molecule when the probe is not hybridized, the probe can be designed such that the reporter molecule exhibits limited fluorescence until the probe is either hybridized or digested.
    • 提供了使用寡核苷酸探针的杂交测定法,其包括荧光报告分子和能够猝灭报告分子荧光的猝灭剂分子。 构建寡核苷酸探针,使得探针在未杂交的情况下以至少一个单链构象存在,其中猝灭剂分子足够接近报道分子以淬灭报道分子的荧光。 当寡核苷酸探针与靶多核苷酸杂交时,寡核苷酸探针也存在至少一个构象,其中猝灭剂分子不能与报道分子紧密接近以猝灭报道分子的荧光。 通过采用这些杂交和非杂交构象,当探针杂交和未杂交时,探针上的报道分子和猝灭剂分子表现出不同的荧光信号强度。 结果,可以基于报道分子,猝灭剂分子或其组合的荧光强度的变化来确定探针是杂交还是未杂交。 此外,因为探针可以被设计成使得当探针不杂交时,猝灭剂分子淬灭报告分子,所以探针可被设计成使得报告分子在荧光探针杂交或消化之前显示有限的荧光。
    • 6. 发明授权
    • Determination of a genotype of an amplification product at multiple
allelic sites
    • US5962233A
    • 1999-10-05
    • US18595
    • 1998-02-04
    • Kenneth J. LivakFederico Goodsaid
    • Kenneth J. LivakFederico Goodsaid
    • A method is provided for genotyping a target sequence at at least two allelic sites by a 5' nuclease amplification reaction. In one embodiment, the method includes performing a nucleic acid amplification on a target sequence having at least two different allelic sites using a nucleic acid polymerase having 5'.fwdarw.3' nuclease activity and a primer capable of hybridizing to the target sequence in the presence of two or more sets of allelic oligonucleotide probes wherein:each set of allelic oligonucleotide probes is for detecting a different allelic site of the target sequence,each set of allelic oligonucleotide probes includes two or more probes which are complementary to different allelic variants at the allelic site being detected by the set of probes, the allelic site being 5' relative to a sequence to which the primer hybridizes to the target sequence, andat least all but one of the allelic oligonucleotide probes include a different fluorescer than the other probes and a quencher positioned on the probe to quench the fluorescence of the fluorescer;detecting a fluorescence spectrum of the amplification;calculating a fluorescence contribution of each fluorescer to the fluorescence spectrum; anddetermining a presence or absence of the different allelic variants at the two or more different allelic sites based on the fluorescence contribution of each fluorescer to the combined fluorescence spectrum.
    • 9. 发明申请
    • Determination of a Genotype of an Amplification Product at Multiple Allelic Sites
    • 确定多个等位基因位点扩增产物的基因型
    • US20120053069A1
    • 2012-03-01
    • US12618686
    • 2009-11-13
    • Kenneth J. LIVAKFederico Goodsaid
    • Kenneth J. LIVAKFederico Goodsaid
    • C40B30/04C40B40/06C12Q1/68
    • C12Q1/6858C12Q1/6818C12Q2561/101C12Q2537/143C12Q2563/107C12Q2531/119
    • A method is provided for genotyping a target sequence at at least two allelic sites by a 5′ nuclease amplification reaction. In one embodiment, the method includes performing a nucleic acid amplification on a target sequence having at least two different allelic sites using a nucleic acid polymerase having 5′-3′ nuclease activity and a primer capable of hybridizing to the target sequence in the presence of two or more sets of allelic oligonucleotide probes wherein at least all but one of the allelic oligonucleotide probes include a different fluorescer than the other probes and a quencher positioned on the probe to quench the fluorescence of the fluorescer; detecting a fluorescence spectrum of the amplification; calculating a fluorescence contribution of each fluorescer to the fluorescence spectrum; and determining a presence or absence of the different allelic variants based on the fluorescence contribution of each fluorescer to the combined fluorescence spectrum.
    • 提供了一种通过5'核酸酶扩增反应在至少两个等位基因位点对靶序列进行基因分型的方法。 在一个实施方案中,该方法包括使用具有5'-3'核酸酶活性的核酸聚合酶和能够与靶序列杂交的引物在具有至少两个不同等位基因位点的靶序列上进行核酸扩增 两组或多组等位基因寡核苷酸探针,其中等位基因寡核苷酸探针中的至少全部除一个之外包括与其它探针不同的荧光剂,以及位于探针上的猝灭剂以淬灭荧光剂的荧光; 检测扩增的荧光光谱; 计算每个荧光剂对荧光光谱的荧光贡献; 并且基于每个荧光剂对组合的荧光光谱的荧光贡献来确定不同等位基因变体的存在或不存在。