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    • 1. 发明公开
    • Heterologous system for the detection of chemically-labeled DNA and other biological materials providing a receptor or target moiety thereon
    • 用于检测化学标记的DNA和其他生物材料的异位系统,提供受体或目标物质
    • EP0151492A3
    • 1988-11-09
    • EP85101353
    • 1985-02-08
    • ENZO BIOCHEM, INC.
    • Rabbani, Elazar
    • G01N33/535C12Q01/68G01N33/53
    • C12Q1/6813G01N33/535Y10S435/803Y10S435/81Y10S436/808Y10S436/824Y10S436/827
    • The detection and/or identification of materials of interest, such as biological materials, e.g. chemically labeled DNA, which provide a receptor thereon, is improved by employing a heterologous detection system by employing more than one binding reactions, such as reactions involving the affinity of lectin to a glycoprotein or sugar group and the affinity between biotin and avidin or streptavidin, avidin itself being a glycoprotein. Particularly useful in the heterologous detection system are biotinylated lectins, such as biotinylated Concanayalin A, biotinylated dextran, lectingly- coprotein complexes, such as lectin-avidin and lectinenzyme complexes and streptavidin-biotinylated enzyme complexes. By way of example, the detection of single-stranded glycosy- toted DNA hybridized to complementary single-stranded DNA is detected by bringing the hybridized double-stranded DNA into contact with a lectin, such as Concanavalin A, for attachment to the glycosyl group of the glycosylated DNA, followed by contact with a biotinylated dextran, a polysaccharide, and then by contact with a lectin-enzyme complex, such as Concanavalin A-horseradish peroxidase or acid phosphatase. Also, there would be employed an enzyme complex comprising streptavidin-biotinylated horseradish peroxidase. The lectin-enzyme complex would attach itself to the sugar or saccharide of the biotinylated dextran which is also attached to the lectin which is fixed to the glycosyl groups of the hybridized DNA. The streptavidin-biotinylated enzyme complex would attach itself to the biotin moieties of the biotinylated dextran which, as indicated, is linked to the lectin attached to the glycosyl groups of the target double-stranded DNA.
    • 5. 发明公开
    • Complexing of biologically active or functional compounds and methods of preparing and utilizing same
    • 生物活性或功能化合物的复合物及其制备和利用方法
    • EP0123300A3
    • 1988-01-20
    • EP84104488
    • 1984-04-19
    • ENZO BIOCHEM, INC.
    • Johnston, Kenneth H.
    • G01N33/58C12Q01/68G01N33/74
    • G01N33/74C12Q1/6816G01N33/531G01N33/535G01N33/544G01N33/551C12Q2563/131C12Q2563/125
    • Complexes containing a biologically active or functional compound or compounds are prepared by attaching or fixing a first compound, which may be a biologically active or functional compound, to a solid substrate under conditions such that the active site of said first compound is protected, thereupon derivatizing or combining said first compound with a derivatizing or modifying compound while said first compound is attached to said solid substrate. The resulting complex or complexed first compound is then released from attachment to said solid substrate to yield the complex, said complex comprising said derivatizing compound attached to said first compound, said first compound, upon release from the solid substrate having available its functional or biologically active site. For example, alkaline phosphatase is attached to a solid substrate, such as dextran beads, preferably through a ligand, such as a competitive inhibitor for alkaline phosphatase, e.g. para-aminobenzyl-phosphonic acid (p-ABPA). The dextran beads would be first treated with (p-ABPA) and the alkaline phosphatase brought into contact with the thus-treated dextran beads. The competitive inhibitor p-ABPA serves as a ligand for attachment of the alkaline phosphatase to the dextran beads while at the same time occupying and protecting the active site of the alkaline phosphatase. Thereupon, the thus-attached alkaline phosphatase is derivatized or modified, such as by biotinylation. Upon biotinylation of the alkaline phosphatase, the resulting biotinylated alkaline phosphatase is eluted or removed from attachment to the p-ABPA treated solid substrate or dextran beads to which it was fixed, yielding a biotinylated alkaline phosphatase with the active or functional site of the alkaline phosphatase intact. The complex, while still attached to the dextran beads, could be further treated with a second compound or component which might also, if desired, provide an active or functional site, such as by contact with avidin, which would bind to the modifying or derivatizing moiety, i.e. biotin, of the biotinylated alkaline phosphatase and the thus-produced avidin-biotinylated alkaline phosphatase complex then eluted. This complex, such as a complex comprising avidin-biotinylated alkaline phosphatase, could be employed as a detector in a detection system for the identification and/or location of another compound, such as a biotinylated compound, e.g. a biotinylated nucleotide or biotinylated DNA.
    • 含有生物活性或功能性化合物或化合物的复合物可通过将第一化合物(其可以是生物活性或功能性化合物)附着或固定在固体底物上,使得所述第一化合物的活性位点被保护的条件下进行衍生化 或将所述第一化合物与衍生化或改性化合物组合,同时所述第一化合物连接到所述固体基质上。 然后将所得复合物或络合的第一化合物从附着物释放到所述固体基质上以产生络合物,所述复合物包含与所述第一化合物连接的所述衍生化合物,所述第一化合物在从固体基质释放后具有其功能或生物活性 例如,碱性磷酸酶连接到固体底物,例如葡聚糖珠,优选通过配体,例如碱性磷酸酶的竞争性抑制剂,例如 对 - 氨基苄基膦酸(p-ABPA),首先用(p-ABPA)处理葡聚糖珠,碱性磷酸酶与如此处理的葡聚糖珠接触。 竞争性抑制剂p-ABPA用作碱性磷酸酶附着于葡聚糖珠的配体,同时占据和保护碱性磷酸酶的活性位点。 因此,如此附着的碱性磷酸酶被衍生化或修饰,例如通过生物素化。 在碱性磷酸酶的生物素化后,所得到的生物素化碱性磷酸酶被洗脱或从与其固定的p-ABPA处理的固体底物或葡聚糖珠的连接中洗脱或除去,产生具有碱性磷酸酶活性或功能位点的生物素化碱性磷酸酶 完整。 复合物虽然仍然附着在葡聚糖珠上,但可以用第二化合物或组分进一步处理,如果需要,还可以提供活性或功能部位,例如通过与抗生物素蛋白接触,其将结合修饰或衍生化 部分,即生物素,生物素化碱性磷酸酶和随后产生的抗生物素蛋白 - 生物素化碱性磷酸酶复合物,然后洗脱。 该复合物,例如包含抗生物素蛋白 - 生物素化碱性磷酸酶的复合物,可以用作检测系统中的检测器,用于鉴定和/或定位另一种化合物,例如生物素化化合物,例如生物素化化合物。 生物素化的核苷酸或生物素化的DNA。