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    • 57. 再颁专利
    • Pyropheophorbides conjugates and their use in photodynamic therapy
    • 焦磷偏共轭物及其在光动力疗法中的应用
    • USRE38994E1
    • 2006-02-28
    • US10385378
    • 2003-03-07
    • Ravindra K. PandeyThomas J. Dougherty
    • Ravindra K. PandeyThomas J. Dougherty
    • A61K31/409C07D487/22
    • A61K51/0485A61K41/0057A61K41/0076A61K2123/00C07D487/22C07D519/00
    • Conjugate are formed by covalently linking a target-specific compound to pyropheophorbide compound which conjugated are injected into a host and accumulate in tumor tissue to a higher degree than surrounding normal tissues. When the pyropheophorbide compound component of the conjugate is exposed to a particular wavelength of light the compound becomes cytotoxic destroying the tumor or diseased tissue without causing irreversible normal tissue damage. The pyropheophorbide compounds have been shown to have a variety of characteristics when used in photodynamic therapy. These characteristics are further improved when the compounds are bound to a target specific component such as a ligand capable of binding to a specific cellular receptor (e.g. growth hormones and growth factors) or an antibody capable of binding to a particular antigen.
    • 共轭体通过将靶特异性化合物与焦磷酸脱氢化合物共价连接而形成,所述化合物与缀合物注射入宿主中并在肿瘤组织中积聚到比周围正常组织更高的程度。 当缀合物的焦偏心复合物组分暴露于特定波长的光时,该化合物变得细胞毒性破坏肿瘤或患病组织而不引起不可逆的正常组织损伤。 已经显示焦磷酸脱氢化合物在用于光动力疗法中具有多种特征。 当化合物结合到靶特异性组分如能够结合特定细胞受体的配体(例如生长激素和生长因子)或能够结合特定抗原的抗体时,这些特征进一步改善。
    • 59. 发明授权
    • Temperature sensitive control of liposome-cell adhesion
    • 温度敏感控制脂质体细胞粘附
    • US06991805B1
    • 2006-01-31
    • US10236345
    • 2002-09-06
    • Sek Wen HuiArindam Sen
    • Sek Wen HuiArindam Sen
    • A61K9/127
    • A61K9/1271
    • The present invention provides a liposomal composition for targeted delivery of drugs. The composition comprises poloxamer molecules and liposomes encapsulating one or more delivery agents. At above the critical micellar temperature of the poloxamer, a fraction of the poloxamer molecules form micelles and another fraction becomes incorporated into the liposome surface, thereby inhibiting their adhesion to cells. At a temperature below the critical micellar temperature, the poloxamer molecules dissociate into monomers allowing the liposomes to adhere to adjacent cells and effecting retention of the liposomes in the surrounding tissue. A method is provided for delivery of agents to target site comprising administering the composition to an individual and cooling the target site to cause retention of the liposomes at or near the target site.
    • 本发明提供用于靶向递送药物的脂质体组合物。 组合物包含泊洛沙姆分子和包封一种或多种递送剂的脂质体。 在泊洛沙姆的临界胶束温度之上,一部分泊洛沙姆分子形成胶束,另一部分进入脂质体表面,从而抑制它们对细胞的粘附。 在低于临界胶束温度的温度下,泊洛沙姆分子解离成单体,使脂质体粘附到相邻的细胞上,并使脂质体保留在周围的组织中。 提供了一种用于将试剂递送至靶位点的方法,包括向个体施用组合物并冷却靶位点以使脂质体保留在靶位点附近或附近。