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    • 56. 发明申请
    • Nucleic Acid Labeling Methods
    • 核酸标记方法
    • US20090054258A1
    • 2009-02-26
    • US12256256
    • 2008-10-22
    • Kyle B. ColeVivi TruongGlenn H. McGallAnthony D. Barone
    • Kyle B. ColeVivi TruongGlenn H. McGallAnthony D. Barone
    • C40B30/04C07H19/20C07H19/10
    • C07H19/20C07H19/10C07H21/00
    • In one aspect of the invention, a method is provided for end-labeling RNA (total RNA, mRNA, cRNA or fragmented RNA). In one aspect of the present invention, T4 RNA ligase is used to attach a 3′-labeled AMP or CMP donor to an RNA acceptor molecule. In another embodiment, a pyrophosphate molecule 3′-AppN-3′-linker-detectable moiety is used as donor molecule.In another aspect of the present invention, a method of detecting the presence of an RNA of interest in a sample is provided, the method having the following steps: providing the sample comprising RNA which may or may not have said RNA of interest; treating the sample with a fragmenting reagent to provide RNA fragments; removing phosphate groups from said fragments to provide fragments with free 3′ OH groups; ligating said fragment with a labeling reagent according to the instant invention; providing a nucleic acid array having probes directed to said RNA of interest; hybridizing the labeled nucleic acid fragments to said nucleic acid array; and determining the extent of hybridization to said probes to determine the presence of said RNA of interest.
    • 在本发明的一个方面,提供了用于末端标记RNA(总RNA,mRNA,cRNA或片段化RNA)的方法。 在本发明的一个方面,T4 RNA连接酶用于将3'标记的AMP或CMP供体连接到RNA受体分子上。 在另一个实施方案中,将焦磷酸盐分子3'- AppN-3'-接头可检测部分用作供体分子。 在本发明的另一方面,提供了检测样品中目的RNA存在的方法,该方法具有以下步骤:提供包含可能具有或不具有所述目的RNA的RNA的样品; 用碎裂试剂处理样品以提供RNA片段; 从所述片段中除去磷酸基以提供具有游离的3'OH基团的片段; 将所述片段与根据本发明的标记试剂连接; 提供具有针对所述感兴趣的RNA的探针的核酸阵列; 将标记的核酸片段与所述核酸阵列杂交; 以及确定与所述探针的杂交程度,以确定所述目的RNA的存在。
    • 58. 发明授权
    • Labeling reagents
    • 标记试剂
    • US06858711B2
    • 2005-02-22
    • US09880727
    • 2001-06-13
    • Glenn H. McGallAnthony D. Barone
    • Glenn H. McGallAnthony D. Barone
    • C07B61/00C07H19/052C07H19/12C07H21/00C12Q1/00C12Q1/68C07H21/02C07H21/04
    • C07H19/052C07H19/12C07H21/00C12Q1/6809C12Q1/6837C12Q2600/156C40B40/00G06F19/20G06F19/22C12Q2525/161C12Q2565/501C12Q2561/125
    • 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 than 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。 所述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。