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    • 7. 发明申请
    • Modified sodium iodide symporter proteins and genes for imaging and cancer therapy
    • 修饰的碘化钠同向转运蛋白和成像和癌症治疗的基因
    • US20060004191A1
    • 2006-01-05
    • US10519183
    • 2003-06-25
    • Sissy JhiangDaniel ShenXiaoqin Lin
    • Sissy JhiangDaniel ShenXiaoqin Lin
    • C12Q1/68C07H21/04C07K14/705
    • C07K14/705
    • The invention provides modified sodium iodide symporter (NIS) proteins, and polynucleotides encoding modified NIS proteins. The modified NIS proteins have a net electrostatic charge more positive than that of corresponding wild-type NIS proteins. Expression of a modified NIS protein in a cell results in higher intracellular concentrations of NIS substrates as compared to equivalent expression of the corresponding wild-type NIS protein in a cell. The invention also provides methods for imaging cells or for therapy of cancer cells, using the modified NIS proteins to facilitate transport of NIS substrates into cells in the body of an individual. Uptake of NIS substrates suitable for either imaging or that have cytotoxic activity, into the cells of the individual that express modified NIS protein facilitate detection of the substrate (for imaging) or killing of the cancer cells (for therapy).
    • 本发明提供修饰的碘化钠同向转运体(NIS)蛋白质和编码修饰的NIS蛋白质的多核苷酸。 修饰的NIS蛋白具有比相应的野生型NIS蛋白更纯正的净静电电荷。 与细胞中相应的野生型NIS蛋白的等同表达相比,修饰的NIS蛋白在细胞中的表达导致更高的NIS底物的细胞内浓度。 本发明还提供了用于成像细胞或用于治疗癌细胞的方法,其使用经修饰的NIS蛋白促进NIS底物输送到个体体内的细胞中。 适用于成像或具有细胞毒活性的NIS底物摄取到表达修饰的NIS蛋白的个体的细胞中有助于检测底物(用于成像)或杀死癌细胞(用于治疗)。