COMPOSITION AND METHOD FOR ENHANCING TRANSPORT ACROSS BIOLOGICAL MEMBRANES
    4.
    发明公开
    COMPOSITION AND METHOD FOR ENHANCING TRANSPORT ACROSS BIOLOGICAL MEMBRANES 失效
    成分和方法延迟运输生物膜的

    公开(公告)号:EP0975370A2

    公开(公告)日:2000-02-02

    申请号:EP98923711.0

    申请日:1998-05-21

    IPC分类号: A61K47/48

    摘要: Methods and compositions for transporting drugs and macromolecules across biological membranes are disclosed. In one embodiment, the invention includes a method for enhancing transport of a selected compound across a biological membrane, wherein a biological membrane is contacted with a conjugate containing a biologically active agent that is covalently attached to a transport polymer. In one embodiment, the polymer consists of from 6 to 25 subunits, at 50 % of which contain a guanidino or amidino sidechain moiety. The polymer is effective to impart to the attached agent a rate of trans-membrane transport across a biological membrane that is greater than the rate of trans-membrane transport of the agent in non-conjugated form. The transport-enhancing polymers are exemplified, in a preferred embodiment, by peptides in which arginine residues constitute the subunits. Such a polyarginine peptide may be composed of either all D-, all L- or mixed D- and L-arginines, any may include additional amino acids. More preferably, at least one, and preferably all of the subunits are D-arginine residues, to enhance biological stability of the polymer during transit of the conjugate of its biological target.

    COMPOSITIONS AND METHODS FOR ENHANCING DRUG DELIVERY ACROSS BIOLOGICAL MEMBRANES AND TISSUES
    5.
    发明公开
    COMPOSITIONS AND METHODS FOR ENHANCING DRUG DELIVERY ACROSS BIOLOGICAL MEMBRANES AND TISSUES 审中-公开
    总之定居点和方法改进的药物给药生物膜或组织

    公开(公告)号:EP1263469A1

    公开(公告)日:2002-12-11

    申请号:EP01909135.4

    申请日:2001-02-09

    申请人: Cellgate Inc.

    IPC分类号: A61K47/42 A61K47/48

    摘要: This invention provides compositions and methods for enhancing delivery of drugs and other agents across a biological barrier, including epithelial tissues such as the skin, gastrointestinal tract, pulmonary epithelium, and the like. The compositions and methods are also useful for delivery across endothelial tissues, including the blood brain barrier. The compositions and methods employ a delivery enhancing transporter that has sufficient guanidino or amidino sidechain moieties to enhance delivery of a compound across one or more layers of the tissue, compared to the non-conjugated compound. The delivery-enhancing polymers include, for example, poly-arginine molecules that are preferably between about 6 and 50 residues in length.