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    • 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
    • US06821727B1
    • 2004-11-23
    • US09627753
    • 2000-07-28
    • Kenneth J. LivakSusan J. A. FloodJeffrey MamoroKhairuzzaman Bashar Mullah
    • Kenneth J. LivakSusan J. A. FloodJeffrey MamoroKhairuzzaman Bashar Mullah
    • C12Q168
    • C12Q1/6818C12Q1/6834Y10S977/924C12Q2525/301C12Q2565/1015C12Q2565/107C12Q2561/101
    • 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 confirmation 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种单链确认存在,其中淬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
    • Self-quenching fluorescence probe
    • 自熄荧光探针
    • US5723591A
    • 1998-03-03
    • US559405
    • 1995-11-15
    • Kenneth J. LivakSusan J.A. FloodJeffrey MarmaroKhairuzzaman Bashar Mullah
    • Kenneth J. LivakSusan J.A. FloodJeffrey MarmaroKhairuzzaman Bashar Mullah
    • C12N15/09C07H21/00C12N15/00C12Q1/68C07H19/00C07H21/02C07H21/04
    • C12Q1/6818C12Q1/6834C12Q1/6837
    • An oligonucleotide probe is provided 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 exhibit 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.
    • 提供了一种寡核苷酸探针,其包括荧光报道分子和能够猝灭报道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。