Selex and photoSELEX
    11.
    发明授权
    Selex and photoSELEX 有权
    Selex和photoSELEX

    公开(公告)号:US08409795B2

    公开(公告)日:2013-04-02

    申请号:US12175388

    申请日:2008-07-17

    IPC分类号: C12Q1/68

    摘要: The present disclosure describes improved SELEX methods for generating nucleic acid ligands that are capable of binding to target molecules and improved photoSELEX methods for generating photoreactive nucleic acid ligands that are capable of both binding and covalently crosslinking to target molecules. The disclosure further describes nucleic acid libraries having expanded physical and chemical properties and their use in SELEX and photoSELEX; methods for increasing the crosslinking efficiencies of photoaptamers; methods for producing photoaptamers having selective modifications that enhance functionality and minimize non-specific photoreactions; and methods for generating truncated nucleic acid ligands from nucleic acid ligands of longer length. The disclosure further describes aptamers and photoaptamers obtained by using any of the foregoing.

    摘要翻译: 本公开描述了用于产生能够结合靶分子的核酸配体的改进的SELEX方法和用于产生能够与靶分子结合和共价交联的光反应性核酸配体的改进的photoSELEX方法。 本公开进一步描述了具有扩展的物理和化学性质及其在SELEX和photoSELEX中的用途的核酸文库; 提高光催化剂交联效率的方法; 制备具有增强功能并使非特异性光反应最小化的选择性修饰的光致抗体的方法; 以及用于从较长长度的核酸配体产生截短的核酸配体的方法。 本公开进一步描述了通过使用上述任何一种获得的适体和光致抗体。

    Method for generating aptamers with improved off-rates
    13.
    发明授权
    Method for generating aptamers with improved off-rates 有权
    用于产生具有改善的脱离率的适配体的方法

    公开(公告)号:US07964356B2

    公开(公告)日:2011-06-21

    申请号:US12499967

    申请日:2009-07-09

    IPC分类号: C12Q1/68 C07H21/02

    摘要: The present disclosure describes methods for producing aptamers and photoaptamers having slower dissociation rate constants than are obtained using prior SELEX and photoSELEX methods. The disclosure further describes aptamers and photoaptamers having slower dissociation rate constants than those obtained using prior methods. This invention relates to the field of diagnostic histology, cytology, histopathology, and cytopathology methods and reagents for the detection of various disease states. More specifically, the invention relates to the use of aptamers in histologic, cytologic, histopathic, and/or cytopathic diagnostic methods. Aptamers may be provided that react with specific target molecules contained within a histological or cytological sample. Aptamers may be used to assess localization, relative density, and presence or absence of one or more target. Targets may be selected that are specific and diagnostic of a given disease state for which the sample was collected. Aptamers may be used to introduce target specific signal moieties. Antigen retrieval methods may be applied to the sample prior to reaction with the specific aptamer/s to improve interaction of the aptamer and target within the sample. Or aptamers may be developed for the specific target that eliminates the need for the antigen retrieval process. In addition to target identification, aptamers may be used to amplify signal generation through a variety of methods.

    摘要翻译: 本公开描述了用于产生具有比使用先前的SELEX和photoSELEX方法获得的解离速率常数更慢的适体和光催化剂的方法。 本公开进一步描述了具有比使用现有方法获得的那些更快的解离速率常数的适体和光致抗体。 本发明涉及用于检测各种疾病状态的诊断组织学,细胞学,组织病理学和细胞病理学方法和试剂领域。 更具体地,本发明涉及适配体在组织学,细胞学,组织病理学和/或细胞病变诊断方法中的用途。 可以提供与包含在组织学或细胞学样品中的特定靶分子反应的适配子。 可以使用适配器来评估定位,相对密度以及一个或多个靶的存在或不存在。 可以选择对于样品收集的给定疾病状态的特异性和诊断性的靶标。 适配子可用于引入目标特异性信号部分。 抗原检索方法可以在与特异性适体反应之前应用于样品,以改善样品中适体和靶标的相互作用。 或者可以针对特定靶标开发适配体,从而消除对抗原检索过程的需要。 除目标识别之外,适体可用于通过各种方法放大信号产生。

    Nonalcoholic Fatty Liver Disease (NAFLD) and Nonalcoholic Steatohepatitis (NASH) Biomarkers and Uses Thereof

    公开(公告)号:US20210215711A1

    公开(公告)日:2021-07-15

    申请号:US16074181

    申请日:2017-02-07

    申请人: SomaLogic, Inc.

    发明人: Stuart Field

    IPC分类号: G01N33/68

    摘要: Methods, compositions, and kits for determining whether a subject has non-alcoholic fatty liver disease (NAFLD), and more specifically one or more of the following associated conditions of steatosis, lobular inflammation, hepatocyte ballooning and fibrosis, are provided. Methods, compositions, and kits for determining whether a subject has non-alcoholic steatosis are also provided. Methods, compositions, and kits for determining whether a subject has non-alcoholic steatohepatitis (NASH) are also provided.

    Compositions and methods for detecting microorganisms

    公开(公告)号:US10538771B2

    公开(公告)日:2020-01-21

    申请号:US16118596

    申请日:2018-08-31

    申请人: SomaLogic, Inc.

    摘要: Described herein are compositions and methods for detecting the presence or absence of a microorganism in a sample comprising contacting the sample with an aptamer capable of binding to a cell-surface protein of the microorganism to form a complex, contacting the mixture with a second aptamer capable of binding to the first cell-surface protein or a second cell-surface protein of the microorganism; and performing an assay to detect the second aptamer, wherein detecting the second aptamer indicates that the microorganism is present in the sample, and wherein not detecting the second aptamer indicates that the microorganism is absent from the sample.