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    • 1. 发明授权
    • Visualization and quantitation of cellular cytotoxicity using cell-permeable fluorogenic protease substrates and caspase activity indicator markers
    • 使用细胞渗透性荧光蛋白酶底物和胱天蛋白酶活性指示标记物可视化和定量细胞细胞毒性
    • US07927871B2
    • 2011-04-19
    • US11669080
    • 2007-01-30
    • Beverly PackardAkira Komoriya
    • Beverly PackardAkira Komoriya
    • C12N5/00C12Q1/37G01N33/53
    • G01N33/505A61K38/07A61K38/08G01N33/5047G01N33/5055G01N33/533G01N33/582
    • This invention provides a non-radioactive assay to monitor and quantify the target-cell killing activities mediated by cytotoxic T lymphocytes (CTLs). This assay is predicated on the discovery that apoptosis pathway activation and, in particular, granzyme B activity, provides a measure of cytotoxic effector cell activity. In one embodiment, measurement of CTL-induced granzyme B activation in target cells is achieved through detection of the specific cleavage of fluorogenic granzyme B substrates. This assay reliably detects antigen-specific CTL killing of target cells, and provides a more sensitive, more informative and safer alternative to the standard 51Cr-release assay most often used to quantify CTL responses. The assay can be used to study CTL-mediated killing of primary host target cells of different cell lineages, and enables the study of antigen-specific cellular immune responses in real time at the single-cell level. As such, the assay can provide a valuable tool for studies of infectious disease pathogenesis and development of new vaccines and immunotherapies.
    • 本发明提供了用于监测和定量由细胞毒性T淋巴细胞(CTL)介导的靶细胞杀伤活性的非放射性测定。 该测定基于发现凋亡途径活化,特别是颗粒酶B活性提供细胞毒性效应细胞活性的量度的发现​​。 在一个实施方案中,通过检测荧光颗粒酶B底物的特异性切割来实现靶细胞中CTL诱导的颗粒酶B活化的测量。 该测定可靠地检测靶细胞的抗原特异性CTL杀伤,并且提供了更常用于定量CTL反应的标准51Cr释放测定法更灵敏,更有信息和更安全的替代方法。 该测定可用于研究CTL介导的不同细胞系主要宿主靶细胞的杀伤,并能够在单细胞水平实时研究抗原特异性细胞免疫应答。 因此,该测定可以为感染性疾病发病机理的研究和新疫苗和免疫疗法的开发提供有价值的工具。
    • 9. 发明申请
    • VISUALIZATION AND QUANTITATION OF CELLULAR CYTOTOXICITY USING CELL-PERMEABLE FLUOROGENIC PROTEASE SUBSTRATES AND CASPASE ACTIVITY INDICATOR MARKERS
    • 使用细胞渗透性荧光素酶基质和CASPASE活性指示标记的细胞生物学活性的可视化和定量
    • US20070184493A1
    • 2007-08-09
    • US11669080
    • 2007-01-30
    • Beverly PackardAkira Komoriya
    • Beverly PackardAkira Komoriya
    • G01N33/567A61K38/10
    • G01N33/505A61K38/07A61K38/08G01N33/5047G01N33/5055G01N33/533G01N33/582
    • This invention provides a non-radioactive assay to monitor and quantify the target-cell killing activities mediated by cytotoxic T lymphocytes (CTLs). This assay is predicated on the discovery that apoptosis pathway activation and, in particular, granzyme B activity, provides a measure of cytotoxic effector cell activity. In one embodiment, measurement of CTL-induced granzyme B activation in target cells is achieved through detection of the specific cleavage of fluorogenic granzyme B substrates. This assay reliably detects antigen-specific CTL killing of target cells, and provides a more sensitive, more informative and safer alternative to the standard 51Cr-release assay most often used to quantify CTL responses. The assay can be used to study CTL-mediated killing of primary host target cells of different cell lineages, and enables the study of antigen-specific cellular immune responses in real time at the single-cell level. As such, the assay can provide a valuable tool for studies of infectious disease pathogenesis and development of new vaccines and immunotherapies.
    • 本发明提供了用于监测和定量由细胞毒性T淋巴细胞(CTL)介导的靶细胞杀伤活性的非放射性测定。 该测定基于发现凋亡途径活化,特别是颗粒酶B活性提供细胞毒性效应细胞活性的量度的发现​​。 在一个实施方案中,通过检测荧光颗粒酶B底物的特异性切割来实现靶细胞中CTL诱导的颗粒酶B活化的测量。 该测定可靠地检测靶细胞的抗原特异性CTL杀伤,并且为最常用于定量CTL应答的标准 Cr释放测定提供更灵敏,更有信息和更安全的替代方案。 该测定可用于研究CTL介导的不同细胞系主要宿主靶细胞的杀伤,并能够在单细胞水平实时研究抗原特异性细胞免疫应答。 因此,该测定可以为感染性疾病发病机理的研究和新疫苗和免疫疗法的开发提供有价值的工具。