Aptamers specific for biomolecules and methods of making
    1.
    发明授权
    Aptamers specific for biomolecules and methods of making 失效
    适用于生物分子和制备方法

    公开(公告)号:US5756291A

    公开(公告)日:1998-05-26

    申请号:US484192

    申请日:1995-06-07

    摘要: A method for identifying oligomer sequences, optionally comprising modified base, which specifically bind target molecules such as serum proteins, kinins, eicosanoids and extracellular proteins is described. The method is used to generate aptamers that bind to serum Factor X, PDGF, FGF, ICAM, VCAM, E-selectin, thrombin, bradykinin, PGF2 and cell surface molecules. The technique involves complexation of the target molecule with a mixture of oligonucleotides containing random sequences and sequences which serve as primer for PCR under conditions wherein a complex is formed with the specifically binding sequences, but not with the other members of the oligonucleotide mixture. The complex is then separated from uncomplexed oligonucleotides and the complexed members of the oligonucleotide mixture are recovered from the separated complex using the polymerase chain reaction. The recovered oligonucleotides may be sequenced, and successive rounds of selection using complexation, separation, amplification and recovery can be employed. The oligonucleotides can be used for therapeutic and diagnostic purposes and for generating secondary aptamers.

    摘要翻译: 描述了用于鉴定特异性结合靶分子如血清蛋白,激肽,类花生酸和细胞外蛋白质的寡核苷酸序列的任选包含修饰的碱基的方法。 该方法用于产生与血清因子X,PDGF,FGF,ICAM,VCAM,E-选择蛋白,凝血酶,缓激肽,PGF2和细胞表面分子结合的适体。 该技术涉及将靶分子与含有随机序列和序列的寡核苷酸的混合物络合,所述随机序列和序列用作PCR引物的条件,其中用特异性结合序列形成复合物,但不与寡核苷酸混合物的其它成员形成。 然后将复合物与未络合的寡核苷酸分离,并使用聚合酶链反应从分离的复合物中回收寡核苷酸混合物的络合成员。 可以对回收的寡核苷酸进行测序,并且可以使用使用络合,分离,扩增和回收的连续轮次选择。 寡核苷酸可用于治疗和诊断目的并用于产生次级适体。

    Synthesis of myo-inositol phosphates
    2.
    发明授权
    Synthesis of myo-inositol phosphates 失效
    肌醇磷酸酯的合成

    公开(公告)号:US5756774A

    公开(公告)日:1998-05-26

    申请号:US794957

    申请日:1997-02-04

    CPC分类号: C07D493/04 C07F9/117

    摘要: Provided herein are novel syntheses of the phosphate-based inositol derivatives 1-O-�(+)-menthoxycarbonyl!-6-O-benzyl-2,3:4,5-di-O-isopropylidene-myo-inositol (D4P), D-myo-inositol 1,4,5-trisphosphate (D-IP.sub.3), 6-O-benzyl-2,3:4,5-di-O-isopropylidene-myo-inositol H-phosphonate ((-)-3-HP) and L-myo-inositol 1,4,5-trisphosphate (L-IP.sub.3). These syntheses employ fewer column chromatography steps for the isolation of intermediates than do prior art syntheses, and hence, are more convenient, economical and efficient than are the previously known synthetic methods.

    摘要翻译: 本文提供了磷酸酯类肌醇衍生物1-O - [(+) - 薄荷氧基羰基] -6-O-苄基-2,3:4,5-二-O-异亚丙基肌醇(D4P)的新合成, ,D-肌醇1,4,5-三磷酸(D-IP3),6-O-苄基-2,3:4,5-二-O-异亚丙基肌醇H-膦酸(( - ) - 3-HP)和L-肌醇1,4,5-三磷酸(L-IP3)。 与现有技术合成相比,这些合成使用较少的柱色谱步骤用于分离中间体,因此比先前已知的合成方法更方便,经济和有效。