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    • 1. 发明授权
    • Optical detector for enzyme activation
    • 用于酶活化的光学检测器
    • US08003373B2
    • 2011-08-23
    • US12127908
    • 2008-05-28
    • Orhan SoykanMaura G. Donovan
    • Orhan SoykanMaura G. Donovan
    • C12M1/34
    • A61B5/14546A61B5/0071A61B5/0075A61B5/0084A61B5/4839A61B5/7203C12Q1/37C12Q1/56G01N21/6428G01N21/8507G01N33/86G01N2021/6415G01N2021/6441G01N2021/6484G01N2021/8528
    • Activation of an enzyme in a bodily fluid is detected based on the amount of cleavage of a substrate for the enzyme. The substrate is tagged with two fluorescent dyes—a donor and an acceptor. The tagged substrate is presented to the bodily fluid. A device emits energy at a first wavelength into the bodily fluid, and detects energy at second and third wavelengths emitted by the dyes in response to the energy at the first wavelength. Prior to enzymatic cleavage of the substrate, the acceptor emits energy at the third wavelength in response to energy at the second wavelength received through fluorescent resonant energy transfer (FRET) from the donor. After enzymatic cleavage of the substrate, the donor emits energy at the second wavelength. The device can determine the concentration of activated enzyme within the bodily fluid based on the relative intensities of energy, at the second and third wavelengths.
    • 基于酶的底物的切割量检测体液中酶的活化。 用两种荧光染料 - 供体和受体标记底物。 标记的基质被呈现给体液。 器件将第一波长的能量发射到体液中,并响应于第一波长的能量,检测由染料发射的第二和第三波长处的能量。 在衬底的酶切割之前,受体以响应于通过来自供体的荧光共振能量转移(FRET)接收的第二波长的能量而在第三波长处发射能量。 在酶切割底物之后,供体在第二波长处发射能量。 该装置可以基于在第二和第三波长处的能量的相对强度来确定体液中活化酶的浓度。