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    • 11. 发明授权
    • Insitu hybridization method for detecting target nucleic acid
    • 用于检测靶核酸的杂交方法
    • US6165723A
    • 2000-12-26
    • US313852
    • 1999-05-18
    • Jyotsna S. ShahNick S. Harris
    • Jyotsna S. ShahNick S. Harris
    • C12Q1/68C07H21/04G01N1/30
    • C12Q1/6841C12Q1/6888C12Q1/6893C12Q2527/125C12Q2563/107
    • The present invention provides a method for detecting a target nucleic acid fragment directly from a specimen obtained from a patient by in situ hybridization. The method is comprised of several steps which are performed in the listed order. A sample of the specimen is deposited onto a slide. The sample is fixed onto the slide with fixative, the fixative comprising either methanol-acetic acid at a ratio of from 99:1 to 80:20, or formalin-acetic acid at a ratio of from 99:1 to 80:20. The nucleic acids of the fixed sample are contacted with a probe complex specific for the target nucleic acid fragment, under conditions appropriate for hybridization. Non-hybridized probe complex is rinsed from the sample. The rinsed sample is stained with Evans Blue. The hybridized probe complex is visually detected by microscopy, with the presence of the probe complex being an indication of the presence of the target nucleic acid fragment. The method can be performed with different hybridization buffers, several of which are disclosed. The method of the present invention is useful for detecting pathogens in a specimen. Specific probe complexes are disclosed which are useful for detecting pathogens of the species Babesia. The method is useful in detecting nucleic acids from a wide variety of specimens, including serum, plasma, sputum, urine, cerebral spinal fluids, tissue, breast milk, and insects such as ticks.
    • 本发明提供了通过原位杂交直接从患者获得的标本中检测靶核酸片段的方法。 该方法由按照列出的顺序执行的几个步骤组成。 将试样的样品沉积在载玻片上。 将样品用固定剂固定在载玻片上,固定剂包含比例为99:1至80:20的甲醇 - 乙酸或比例为99:1至80:20的福尔马林 - 乙酸。 将固定样品的核酸与靶核酸片段特异性的探针复合物在适于杂交的条件下接触。 从样品中冲洗非杂交探针复合物。 冲洗的样品用伊文思蓝染色。 通过显微镜目视检测杂交的探针复合物,探针复合物的存在是靶核酸片段的存在的指示。 该方法可以用不同的杂交缓冲液进行,其中几种是公开的。 本发明的方法可用于检测样品中的病原体。 公开了特异性探针复合物,其可用于检测物种Babesia的病原体。 该方法可用于检测各种标本中的核酸,包括血清,血浆,痰液,尿液,脑脊髓液,组织,母乳和昆虫如蜱。