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    • 2. 发明授权
    • Biological component comprising artificial membrane
    • 包含人造膜的生物成分
    • US07713544B2
    • 2010-05-11
    • US10343408
    • 2001-07-30
    • Elliot L. ChaikofJune FengJanine M. OrbanHongbo LiuXue Long SunKeith M. Faucher
    • Elliot L. ChaikofJune FengJanine M. OrbanHongbo LiuXue Long SunKeith M. Faucher
    • A61L27/00A61F13/00A61K9/127
    • C07F9/6552A61K9/1273A61K9/5031A61K9/5073A61L15/32A61L27/222A61L27/227A61L27/24A61L27/507A61L33/0082B82Y5/00B82Y30/00C08F220/28C08F220/36C12N1/00
    • A biocompatible biological component is provided comprising a membrane-mimetic surface film covering a substrate. Suitable substrates include hydrated substrates, e.g. hydrogels which may contain drugs for delivery to a patient through the membrane-mimetic film, or may be made up of cells, such as islet cells, for transplantation. The surface may present exposed bioactive molecules or moieties for binding to target molecules in vivo, for modulating host response when implanted into a patient (e.g. the surface may be antithrombogenic or antiinflammatory) and the surface may have pores of selected sizes to facilitate transport of substances therethrough. An optional hydrophilic cushion or spacer between the substrate and the membrane-mimetic surface allows transmembrane proteins to extend from the surface through the hydrophilic cushion, mimicking the structure of naturally-occurring cells. An alkylated layer directly beneath the membrane-mimetic surface facilates bonding of the surface to the remainder of the biological component. Alkyl chains may extend entirely through the hydrophilic cushion when present. To facilitate binding, the substrate may optionally be treated with a polyelectrolyte or alternating layers of oppositely-charged polyelectrolytes to facilitate charged binding of the membrane-mimetic film or alkylated layer beneath the membrane-mimetic film to the substrate. The membrane-mimetic film is preferably made by in situ polymerization of phospholipid vesicles.
    • 提供生物相容的生物组分,其包含覆盖基质的膜模拟表面膜。 合适的底物包括水合底物,例如 水凝胶,其可以含有通过膜模拟膜递送到患者的药物,或者可以由用于移植的细胞如胰岛细胞组成。 表面可以在体内呈现暴露的生物活性分子或结合靶向分子的部分,用于当植入患者时调节宿主反应(例如表面可能是抗血栓形成或抗炎性的),并且该表面可以具有选定尺寸的孔以促进物质的运输 通过。 衬底和膜模拟表面之间的可选的亲水垫或间隔物允许跨膜蛋白从表面延伸穿过亲水垫,模仿天然存在的细胞的结构。 直接在膜 - 模拟表面下面的烷基化层促进了表面与生物组分的其余部分的结合。 当存在时,烷基链可以完全延伸穿过亲水性垫。 为了便于结合,底物可以任选地用聚电解质或交替的相反电荷的聚电解质层处理,以促进膜 - 模拟膜下面的膜模拟膜或烷基化层与底物的带电结合。 膜模拟膜优选通过磷脂囊泡的原位聚合来制备。
    • 3. 发明授权
    • Synthesis of glycophospholipid and peptide-phospholipid conjugates and uses thereof
    • 糖磷脂和肽 - 磷脂缀合物的合成及其用途
    • US06171614B2
    • 2001-01-09
    • US09514348
    • 2000-02-28
    • Elliot L. ChaikofLijun Sun
    • Elliot L. ChaikofLijun Sun
    • A61K9127
    • B82Y30/00A61K9/1271A61K47/544C07H15/10C07K1/1077C07K9/001Y10S436/829Y10S530/81Y10T428/2984
    • The present invention provides glycophospholipid and peptide-phospholipid conjugates comprising a phospholipid moiety and a saccharide or peptide moiety joined by an ether linkage comprising a secondary or tertiary amine. The conjugate structure of the invention comprises a flexible spacer arm between the phospholipid and saccharide or peptide moieties which, being variable in length, serves to optimize saccharide or peptide bioactivity. This invention further provides a method for the synthesis of such conjugates comprising the step of reductive amination. The method is efficient, economical and provides a high yield of product. Glycophospholipid and peptide-phospholipid conjugates of the invention can be incorporated and, optionally, chemically polymerized in self-assembling systems such as membranes, bilayers, films, liposomes and the like, and find utility diagnostically and therapeutically in medical and immuno-biological applications.
    • 本发明提供了包含磷脂部分和通过包含仲胺或叔胺的醚键连接的糖或肽部分的糖磷脂和肽 - 磷脂缀合物。 本发明的共轭结构包括在磷脂和糖或肽部分之间的柔性间隔臂,其长度可变地用于优化糖或肽的生物活性。 本发明还提供了一种合成这种共轭物的方法,其包括还原胺化的步骤。 该方法效率高,经济实惠,产品成品率高。 本发明的糖尿病和肽 - 磷脂缀合物可以并入并任选地在诸如膜,双层,膜,脂质体等的自组装系统中化学聚合,并且在医学和免疫生物应用中在诊断和治疗上发现。