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    • 9. 发明授权
    • Electrochemiluminescent enzyme immunoassay
    • 电化学发光酶免疫测定
    • US06524865B1
    • 2003-02-25
    • US08928075
    • 1997-09-11
    • Mark T. MartinRick SaulPam Liang
    • Mark T. MartinRick SaulPam Liang
    • G01N2176
    • G01N33/535C07F15/0053C07K16/44G01N33/533
    • Electrochemiluminescent-labels and enzyme substrates, which preferably are conjugated, are used in immunoassays and electrochemiluminescence is generated catalytically. In conventional electrochemiluminescence immunoassays, an anti-analyte antibody molecule can give rise to typically 6-8 electrochemiluminescence-active ruthenium atoms, while in the present invention, each enzyme-labeled anti-analyte molecule can give rise to thousands of electrochemiluminescence-active ruthenium atoms per second. An exemplary immunoassay is based on a catalytic process employing &bgr;-lactamase-conjugated anti-analytes which enzymatically hydrolyze electrochemiluminescent-labeled substrates, making them strongly electrochemiluminescent. The electrochemiluminescence signal generated by each anti-analyte molecule (i.e., each analyte molecule) is much greater than with the conventional method. Accordingly, greater sensitivity can be gained in the measurement of low concentrations of a given immunoassay analyte.
    • 优选结合的电致化学发光标记和酶底物用于免疫测定,并且催化产生电化学发光。 在常规的电化学发光免疫测定中,抗分析物抗体分子可以产生典型的6-8个电化学发光 - 活性钌原子,而在本发明中,每个酶标记的抗分析物分子可产生数千个电化学发光 - 活性钌原子 每秒。 示例性的免疫测定是基于使用β-内酰胺酶缀合的抗分析物的催化方法,其中酶促水解电化学发光标记的底物,使其具有强电化学发光的功能。 由每个抗分析物分子(即每个分析物分子)产生的电化学发光信号比常规方法大得多。 因此,在给定免疫测定分析物的低浓度的测量中可以获得更高的灵敏度。