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    • 32. 发明申请
    • MULTIPLEX NUCLEIC ACID REACTIONS
    • WO2004007755A3
    • 2004-01-22
    • PCT/US2003/022171
    • 2003-07-15
    • ILLUMINA, INC.CHEE, MarkFAN, Jian-BingGUNDERSON, Kevin
    • CHEE, MarkFAN, Jian-BingGUNDERSON, Kevin
    • C12Q1/68
    • The invention is directed to a variety of multiplexing methods used to amplify and/or genotype a variety of samples simultaneously. The invention provides a method of detecting a target sequence. The method consists of: (a) contacting a first and second probe with a target sequence under conditions where complementary probes form a hybridization complex with the target sequence, the first probe comprising an upstream universal priming site and a target­ specific sequence, the second probe comprising a downstream universal priming site and a target-specific sequence, wherein one of the first or second probes comprise an adapter sequence; (b) extending the first or second probe of the hybridization complex to form a modified probe; (c) amplifying the modified probe to form an amplicon, and (d) detecting the amplicon. A method of detecting the relative amounts of two or more target sequences is also provided. The method consists of (a) contacting a first and a second probe with first and second target sequences in an initial population under conditions where complementary probes form a hybridization complex with the target sequences, the first and second probes comprising a universal priming site, an adapter sequence and a target-specific sequence; (b) linearly amplifying the first and second probes forming the hybridization complex to produce first and second amplicons having distinctive adapter sequences, and (c) determining a relative amount of the first and second amplicons distinguishable by the adapter sequence, wherein the relative amount of the amplicons is indicative of the relative amounts of the first and second target sequences in the initial population. Further provided is a method of amplifying a target sequence to produce a signal within a dynamic range of a detection assay. The method consists of: (a) hybridizing a target-specific probe having an upstream universal priming site (UUP), a downstream universal priming site (DUP) and an adapter sequence with a set of differential primers, the set of differential primers comprising an upstream primer and first and second downstream primers, the second downstream primer having a lower Tm compared to the upstream primer and the first downstream primer; (b) amplifying the probe with the set of differential primers for two or more cycles of enzymatic polymerization; (c) increasing hybridization stringency to suppress hybridization of the second downstream primer, and (d) amplifying the probe from the upstream and the first downstream primers of the set for at least one cycle of enzymatic polymerization, wherein differential signals of amplicons produced from amplification of the first or the second downstream primers fall within a dynamic range of a detection assay.
    • 36. 发明申请
    • NUCLEIC ACID ANALYSIS TECHNIQUES
    • 核酸分析技术
    • WO1997027317A1
    • 1997-07-31
    • PCT/US1997001603
    • 1997-01-22
    • AFFYMETRIX, INC.LOCKHART, David, J.CHEE, MarkGUNDERSON, KevinLAI, ChaoqiangWODICKA, LisaCRONIN, Maureen, T.LEE, DannyTRAN, Huu, M.MATSUZAKI, HajimeMcGALL, Glenn, H.BARONE, Anthony, D.
    • AFFYMETRIX, INC.
    • C12Q01/00
    • C12Q1/6809C07H19/052C07H19/12C07H21/00C12Q1/6816C12Q1/6837C12Q2600/156C40B40/00C12Q2565/501C12Q2521/501
    • The present invention provides a simplified method for identifying differences in nucleic acid abundances (e.g., expression levels) between two or more samples. The methods involve providing an array containing a large number (e.g. greater then 1,000) of arbitrarily selected different oligonucleotide probes where the sequence and location of each different probe is known. Nucleic acid samples (e.g. mRNA) from two or more samples are hybridized to the probe arrays and the pattern of hybridization is detected. Differences in the hybridization patterns between the samples indicates differences in expression of various genes between those samples. This invention also provides a method of end-labeling a nucleic acid. In one embodiment, the method involves providing a nucleic acid, providing a labeled oligonucleotide and then enzymatically ligating the oligonucleotide to the nucleic acid. Thus, for example, where the nucleic acid is an RNA, a labeled oligoribonucleotide can be ligated using an RNA ligase. In another embodiment, the end labeling can be accomplished by providing a nucleic acid, providing labeled nucleoside triphosphates, and attaching the nucleoside triphosphates to the nucleic acid using a terminal transferase.
    • 本发明提供用于鉴定两个或多个样品之间的核酸丰度差异(例如,表达水平)的简化方法。 该方法包括提供包含大量(例如大于1,000个)任意选择的不同寡核苷酸探针的阵列,其中每个不同探针的序列和位置是已知的。 来自两个或更多个样品的核酸样品(例如mRNA)与探针阵列杂交,并检测杂交模式。 样本之间的杂交模式的差异表明这些样品之间各种基因的表达差异。 本发明还提供了一种终止标记核酸的方法。 在一个实施方案中,该方法包括提供核酸,提供标记的寡核苷酸,然后将寡核苷酸酶连接到核酸上。 因此,例如,当核酸是RNA时,可以使用RNA连接酶连接标记的寡核糖核苷酸。 在另一个实施方案中,末端标记可以通过提供核酸,提供标记的核苷三磷酸和使用末端转移酶将核苷三磷酸与核酸连接来实现。