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    • 2. 发明申请
    • Intracellular trapping of radionuclides by enzyme-mediated reduction
    • 通过酶介导的还原对细胞内捕获放射性核素
    • US20070009437A1
    • 2007-01-11
    • US11390965
    • 2006-03-28
    • Fangyu PengKing LiSunil Pandit
    • Fangyu PengKing LiSunil Pandit
    • A61K51/00C12Q1/68
    • C12N9/0067A61K48/005A61K51/025
    • Enzyme-mediated intracellular trapping of a radionuclide in a target cell is achieved by transfecting the target cell with a transgenic vector encoding a microbial hydrogenase expressible in the target cell and exposing the transfected target cell with a radionuclide. The transgenically expressed microbial hydrogenase catalyzes the reduction of the radionuclide. The reduced radionuclide becomes trapped intracellularly where its emissions can be detected in radioscintigraphy applications. In addition, emissions from an intracellularly trapped radionuclide can be cytotoxic to the cell and therefore useful in radiotherapy applications. As a reporter, a microbial hydrogenase encoding nucleic acid can be included in a vector along with a transgene, both under the control of the same promoter. The detection of emissions from intracellularly reduced and trapped radionuclide can be used to monitor transgene expression.
    • 通过用编码在靶细胞中可表达的微生物氢化酶的转基因载体转染靶细胞并用放射性核素暴露转染的靶细胞,实现靶细胞中放射性核素的酶介导的细胞内捕获。 转基因表达的微生物氢化酶催化还原放射性核素。 减少的放射性核素在细胞内被捕获,其中可以在放射线印迹应用中检测其排放。 此外,来自细胞内捕获的放射性核素的排放物可能对细胞具有细胞毒性,因此可用于放射治疗应用。 作为报告者,编码微生物氢化酶的核酸可以与转基因一起包含在载体中,两者都在同一启动子的控制下。 检测来自细胞内减少和捕获的放射性核素的排放物可用于监测转基因表达。