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    • 64. 发明授权
    • Potency and atoxicity test for modified neurotoxin
    • 改性神经毒素的效力和毒性试验
    • US4162303A
    • 1979-07-24
    • US807654
    • 1977-06-17
    • Murray J. Sanders
    • Murray J. Sanders
    • A61K47/48G01N33/15G01N33/50A61K29/00A61K35/58C12K9/00
    • G01N33/5008A61K47/48438
    • A method for proving the potency and atoxicity of modified neurotoxin is provided. A thin sheet of viable cells is provided on a growth substrate. Viability of the sheet of cells is defined as exhibiting an uninhibited growth potential of at least 10.sup.6 Plaque Forming Units of Semliki Forest virus. The sheet of cells is treated with the test modified neurotoxin and then inoculated with the Semliki Forest virus. The reduction in the number of plaques of Semliki Forest virus in the culture indicates the potency of the modified neurotoxin, since the modified neurotoxin interferes with plaque formation by the Semliki Forest virus in proportion to its potency. Atoxicity of the modified neurotoxin is demonstrated by lack of cell destruction.
    • 提供了证明改性神经毒素的效力和毒性的方法。 在生长基质上提供薄的活细胞。 细胞片的活力定义为表现出至少106个塞米利奇森林病毒斑块形成单位的未抑制的生长势。 用测试的修饰的神经毒素处理细胞片,然后用Semliki Forest病毒接种。 文化中Semliki Forest病毒斑块数量的减少表明改性神经毒素的效力,因为改良的神经毒素会干扰Semliki Forest病毒与其效力成比例的斑块形成。 修饰的神经毒素的毒性由缺乏细胞破坏证明。