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    • 2. 发明授权
    • Thermally induced phase separation immunoassay
    • 热诱导相分离免疫测定
    • US4780409A
    • 1988-10-25
    • US854831
    • 1986-04-28
    • Nobuo MonjiAllan S. HoffmanJohn H. PriestRaymond L. Houghton
    • Nobuo MonjiAllan S. HoffmanJohn H. PriestRaymond L. Houghton
    • G01N33/543G01N33/531G01N33/537G01N33/545G01N33/569
    • G01N33/545G01N33/531G01N33/5375G01N33/56927Y10S435/971Y10S435/973Y10S436/824Y10S436/827
    • An immunoassay in which a thermally induced phase separation is used to effect the separation of specifically bound reactants from free reactants is disclosed. A first reactant is conjugated to a temperature-sensitive polymer to form a polymer/reactant conjugate, and a second reactant is conjugated to a reporter to form a reporter/reactant conjugate. The polymer/reactant, reporter/reactant, and biological fluid samples suspected of containing the analyte are admixed in solution at a temperature other than that at which the polymer will precipitate. Specific binding is allowed to occur, thereby forming a ternary complex. The salt concentration of the adjusted solution is then adjusted to a concentration sufficient to cause the complex to precipitate from the solution, the amount of reporter activity in the precipitated complex or in the solution measured and the presence and/or concentration of the analyte therefrom determined. Alternatively, the first reactant may be conjugated to a monomer and subsequently copolymerized with additional monomers to yield a temperature-sensitive copolymer. Multiple analyses may also be performed on a single sample by choosing a variety of polymers, each polymer having a different specific binding partner conjugated thereto and a different critical solution temperature. By altering the temperature and/or the salt concentration of the solution incrementally, the reporter associated with each of the complexes precipitated with each temperature or concentration increment may be measured, and the presence and/or concentration of each of the analytes determined.
    • 公开了一种免疫测定法,其中使用热诱导相分离来实现特异性结合的反应物与游离反应物的分离。 将第一反应物与温度敏感的聚合物缀合以形成聚合物/反应物缀合物,并且将第二反应物与报道分子缀合以形成报告物/反应物缀合物。 怀疑含有分析物的聚合物/反应物,报告物/反应物和生物液体样品在除聚合物沉淀之外的温度下在溶液中混合。 允许发生特异性结合,从而形成三元复合物。 然后将调整后的溶液的盐浓度调整至足以引起络合物从溶液中沉淀出的浓度,测定沉淀的络合物或溶液中的报告物活性的量以及测定的分析物的存在和/或浓度 。 或者,第一反应物可以与单体缀合,随后与另外的单体共聚以产生温度敏感的共聚物。 也可以通过选择各种聚合物对单个样品进行多重分析,每种聚合物具有与其缀合的不同的特异性结合对象和不同的临界溶解温度。 通过逐渐改变溶液的温度和/或盐浓度,可以测量与每个温度或浓度增量沉淀的每个络合物相关的报告物,并测定每种分析物的存在和/或浓度。
    • 6. 发明授权
    • Membrane affinity concentration immunoassay
    • 膜亲和力浓度免疫测定
    • US5206178A
    • 1993-04-27
    • US663193
    • 1991-02-28
    • Nobuo MonjiCarol-Ann Cole
    • Nobuo MonjiCarol-Ann Cole
    • G01N33/538G01N33/543G01N33/545
    • G01N33/545G01N33/538G01N33/54306Y10S435/971Y10S436/81
    • Methods for determining the presence and/or concentration of an analyte in a biological fluid sample are disclosed. The methods generally include admixing in solution certain polymer/reactant and reporter/reactant conjugates along with the biological fluid sample suspected of containing the analyte, thereby forming ternary complexes. The separation of the complexes from the reaction mixture is achieved through the affinity of certain selected polymer compositions for various solid phases. Upon separation, the amount of reporter activity in the solution may be measured, and therefrom the presence and/or concentration of the analyte determined. Multiple analyses on a biological fluid sample suspected of containing one or more analytes may also be performed, using either a variety of different reporters or selected polymers having varied affinity for the solid phase.
    • 公开了用于确定生物流体样品中分析物的存在和/或浓度的方法。 方法通常包括在溶液中混合某些聚合物/反应物和报告物/反应物共轭物以及怀疑含有分析物的生物流体样品,从而形成三元复合物。 复合物与反应混合物的分离通过某些所选聚合物组合物对于各种固相的亲和力来实现。 在分离时,可以测量溶液中的报告物活性的量,由此测定分析物的存在和/或浓度。 怀疑含有一种或多种分析物的生物流体样品的多个分析也可以使用各种不同的报告物或对固相具有不同亲和力的所选聚合物进行。
    • 7. 发明授权
    • Steric hindrance enzyme immunoassay
    • 空肠阻抗酶免疫测定
    • US4323647A
    • 1982-04-06
    • US197063
    • 1980-10-15
    • Nobuo MonjiAlbert Castro
    • Nobuo MonjiAlbert Castro
    • G01N33/538G01N33/542
    • G01N33/538G01N33/542Y10S435/81Y10S435/964Y10S435/971Y10S435/975
    • A novel separation technique is described that is particularly useful for effecting separations in enzyme immunoassay procedures. A mixture, in an aqueous liquid vehicle, of (1), ligand-enzyme conjugate, and of (2), the conjugate bound through its ligand moiety to a receptor, is brought into contact with an insoluble, immobilized pseudo-substrate material, to which the enzyme normally binds. Free conjugate binds and becomes insoluble. Bound conjugate remains in the liquid phase. The ligand may be an antigen and the receptor, the antibody to the antigen.This separation technique makes feasible several sensitive immunoassay procedures. The material to be assayed may be, for example, rubella virus; hepatitis B surface antigen; gonorrhea antigen; the antibody to any of the foregoing; a general antibody, i.e., an immunoglobulin; a hormone such as choriomammotropin; a steroid, hapten, or the like.
    • 描述了一种新颖的分离技术,其特别可用于实现酶免疫测定方法中的分离。 在水性液体载体中,(1)配体 - 酶偶联物和(2)的混合物,通过其配体部分与受体结合的缀合物与不溶性固定的假底物材料接触, 酶通常结合到其上。 游离共轭物结合并变得不溶。 结合的结合物保留在液相中。 配体可以是抗原和受体,即抗原的抗体。 这种分离技术使几种敏感的免疫测定方法成为可行。 要测定的材料可以是例如风疹病毒; 乙型肝炎表面抗原; 淋病抗原 针对上述任何一种的抗体; 一般抗体,即免疫球蛋白; 一种激素如脉络膜激素; 类固醇,半抗原等。