pH-triggered microparticles
    1.
    发明申请
    pH-triggered microparticles 审中-公开
    pH触发微粒

    公开(公告)号:US20050123596A1

    公开(公告)日:2005-06-09

    申请号:US10948981

    申请日:2004-09-23

    摘要: Microparticles that are designed to release their payload when exposed to acidic conditions are provided as a vehicle for drug delivery. Any therapeutic, diagnostic, or prophylatic agent may be encapsulated in a lipid-protein-sugar or polymeric matrix including a pH triggering agent to form pH triggerable microparticles. Preferably the diameter of the pH triggered microparticles ranges from 50 nm to 10 micrometers. The matrix of the particles may be prepared using any known lipid (e.g., DPPC), protein (e.g., albumin), or sugar (e.g., lactose). The matrix of the particles may also be prepared using any synthetic polymers such as polyesters. Methods of preparing and administering the particles are provided. Methods of immunization, transfection, and gene therapy are also provided by administering pH triggerable microparticles.

    摘要翻译: 被设计为在暴露于酸性条件下释放其有效载荷的微粒被提供作为用于药物递送的载体。 任何治疗,诊断或预防剂可以包封在包含pH引发剂的脂质蛋白质糖或聚合物基质中以形成pH可触发的微粒。 优选地,pH触发的微粒的直径范围为50nm至10微米。 可以使用任何已知的脂质(例如DPPC),蛋白质(例如白蛋白)或糖(例如乳糖)来制备颗粒的基质。 颗粒的基质也可以使用任何合成聚合物如聚酯来制备。 提供了制备和施用颗粒的方法。 免疫,转染和基因治疗的方法也通过施用pH可触发的微粒来提供。

    Compositions and methods for treatment of hypertrophic tissues
    2.
    发明申请
    Compositions and methods for treatment of hypertrophic tissues 审中-公开
    用于治疗肥厚组织的组合物和方法

    公开(公告)号:US20060228404A1

    公开(公告)日:2006-10-12

    申请号:US11256452

    申请日:2005-10-21

    摘要: The present invention provides compositions and methods for treatment of conditions and diseases associated with excessive or inappropriate noncancerous tissue growth. In certain embodiments of the invention the compositions and methods are used for treatment of benign prostatic hyperplasia. In certain embodiments of the invention the composition comprises a tissue-selective delivery vehicle. In certain embodiments of the invention the compositions comprise an expression vector that encodes a cytotoxic polypeptide, wherein expression of the cytotoxic polypeptide is under control of a prostate-specific regulatory element. In certain embodiments of the invention the compositions comprise an expression vector in which expression of a recombinase is under control of a prostate-specific regulatory element, and a recombination event mediated by the recombinase is required for expression of the cytotoxic polypeptide.

    摘要翻译: 本发明提供用于治疗与过度或不适当的非癌组织生长相关的病症和疾病的组合物和方法。 在本发明的某些实施方案中,组合物和方法用于治疗良性前列腺增生。 在本发明的某些实施方案中,组合物包含组织选择性递送载体。 在本发明的某些实施方案中,组合物包含编码细胞毒性多肽的表达载体,其中细胞毒性多肽的表达在前列腺特异性调节元件的控制下。 在本发明的某些实施方案中,组合物包含表达载体,其中重组酶的表达受前列腺特异性调节元件的控制,并且由重组酶介导的重组事件对于表达细胞毒性多肽是必需的。

    Methods and products related to the intracellular delivery of polysaccharides
    7.
    发明申请
    Methods and products related to the intracellular delivery of polysaccharides 审中-公开
    与多糖细胞内转运相关的方法和产品

    公开(公告)号:US20060083711A1

    公开(公告)日:2006-04-20

    申请号:US11107360

    申请日:2005-04-15

    摘要: The invention relates, in part, to methods and compositions for the intracellular delivery of polysaccharides. In particular, the methods and compositions relate to the intracellular delivery of glycosaminoglycans, such as heparin. The invention in other aspects relates to the use of glycosaminoglycans for the treatment of proliferative disorders, such as cancer. The invention is still other aspects relates to improving cell viability. The invention also relates to the delivery of polysaccharides while avoiding unwanted effects of the polysaccharides. For example, heparin can be delivered while avoiding its anticoagulant effects.

    摘要翻译: 本发明部分地涉及多糖的细胞内递送的方法和组合物。 特别地,所述方法和组合物涉及糖胺聚糖如肝素的细胞内递送。 本发明在其它方面涉及使用糖胺聚糖来治疗增殖性疾病如癌症。 本发明还涉及提高细胞活力的其它方面。 本发明还涉及多糖的递送,同时避免多糖的不期望的影响。 例如,可以输送肝素同时避免其抗凝血作用。

    pH triggerable polymeric particles
    8.
    发明申请
    pH triggerable polymeric particles 有权
    pH可触发聚合物颗粒

    公开(公告)号:US20050244504A1

    公开(公告)日:2005-11-03

    申请号:US11002542

    申请日:2004-12-02

    摘要: A drug delivery system comprising pH triggerable particles is described. The pH triggerable particles comprise and agent(s) to be delivered, which is encapsulated in a matrix comprising a pH trigger agent and a polymer. Agents including nucleic acids may be delivered intracellularly using the inventive pH triggerable particles. Upon exposure to an acidic environment such as the endosome or phagosome of a cell, the particles dissolve or disrupt due to protonation or an increase in solubility of the pH triggering agent. Pharmaceutical compositions and methods of preparing and administering these particles are also described. These particles may be particularly useful in genetic vaccination.

    摘要翻译: 描述了包含pH可触发颗粒的药物递送系统。 pH可触发颗粒包含待运送的试剂,其被包封在包含pH触发剂和聚合物的基质中。 包含核酸的试剂可以使用本发明的pH可触发颗粒在细胞内递送。 当暴露于诸如细胞的内体或吞噬体的酸性环境中时,由于质子化或pH引发剂的溶解度的增加,颗粒溶解或破坏。 还描述了制备和施用这些颗粒的药物组合物和方法。 这些颗粒在基因疫苗接种中可能特别有用。