Induction of asymmetry in vesicles

    公开(公告)号:US5204112A

    公开(公告)日:1993-04-20

    申请号:US61837

    申请日:1987-06-12

    IPC分类号: A61K9/127 A61K9/133

    摘要: Methods are described for controlling the transbilayer distribution of ionizable lipids and proteins in vesicles. Control of the ion gradient of the exterior bathing medium in relation to that of the interior entrapped aqueous compartment of the vesicles induces migration of ionizable lipids or proteins to one or the other of the monolayers comprising the bilayer. This can result in an asymmetric distribution of the ionizable lipid or ionizable protein. The basic ionizable lipids, such as stearylamine and sphingosine, are sequestered into the inner monolayer when the liposome interior is acidic relative to the liposome exterior. Conversely, acidic ionizable lipids such as oleic acid and stearic acid are sequestered into the inner monolayer when the liposome interior is basic relative to the liposome exterior bathing solution. Likewise, phospholipids such as phosphatidylglycerol, phosphatidylinositol, and cardiolipin may also be sequestered into the inner monolayer in response to a relatively acidic exterior medium. Such vesicles may contain bioactive agents and may be administered to mammals including humans.

    Compositions and methods for stabilizing liposomal drug formulations
    6.
    发明申请
    Compositions and methods for stabilizing liposomal drug formulations 审中-公开
    用于稳定脂质体药物制剂的组合物和方法

    公开(公告)号:US20090285878A1

    公开(公告)日:2009-11-19

    申请号:US11667138

    申请日:2005-11-04

    摘要: The present invention is directed to liposomal compositions comprising a camptothecin, which are optimized to reduce camptothecin degradation and/or precipitation of camptothecin degradation products in the external medium. The invention further provides improved methods of formulating liposomal camptothecins, kits comprising liposome-encapsulated camptothecins, and methods of using the same to treat a variety of diseases and disorders, including cancer.

    摘要翻译: 本发明涉及包含喜树碱的脂质体组合物,其被优化以减少喜树碱降解和/或在外部介质中降解喜树碱降解产物。 本发明进一步提供了制备脂质体喜树碱的改进方法,包含脂质体包封的喜树碱的试剂盒,及其使用方法来治疗各种疾病和病症,包括癌症。

    Lipid-encapsulated polyanionic nucleic acid
    7.
    发明授权
    Lipid-encapsulated polyanionic nucleic acid 有权
    脂质包封的聚阴离子核酸

    公开(公告)号:US07341738B2

    公开(公告)日:2008-03-11

    申请号:US10658947

    申请日:2003-09-09

    摘要: Methods for the preparation of a lipid-nucleic acid composition are provided. According to the methods, a mixture of lipids containing a protonatable or deprotonatable lipid, for example an amino lipid and a lipid such as a PEG- or Polyamide oligomer-modified lipid is combined with a buffered aqueous solution of a charged therapeutic agent, for example polyanionic nucleic acids, to produce particles in which the therapeutic agent is encapsulated in a lipid vesicle. Surface charges on the lipid particles are at least partially neutralized to provide surface-neutralized lipid-encapsulated compositions of the therapeutic agents. The method permits the preparation of compositions with high ratios of therapeutic agent to lipid and with encapsulation efficiencies in excess of 50%.

    摘要翻译: 提供了制备脂质 - 核酸组合物的方法。 根据该方法,将包含可质子化或不可质令排泄的脂质,例如氨基脂质和脂质如PEG-或聚酰胺低聚物修饰的脂质的脂质混合物与带电疗法的缓冲水溶液组合,例如 聚阴离子核酸,以产生其中治疗剂包封在脂质囊泡中的颗粒。 脂质颗粒上的表面电荷至少部分被中和,以提供治疗剂的表面中和的脂质包封的组合物。 该方法允许制备具有高比例的治疗剂与脂质并且包封效率超过50%的组合物。

    Sport club swing trainer arrangement
    9.
    发明授权
    Sport club swing trainer arrangement 失效
    运动俱乐部秋千教练安排

    公开(公告)号:US06461163B1

    公开(公告)日:2002-10-08

    申请号:US09735011

    申请日:2000-12-12

    IPC分类号: A63B6936

    摘要: The present invention covers a swing trainer arrangement for providing recognizable signals to the user/holder of a sports club or racket to indicate the optimum swing and strike locations during playing with a ball or puck. The swing trainer arrangement comprises a first stopper and a second stopper each may be adjustably arranged to be supported at a selected location of a shaft or handle of the sports club or racket. At least one movable member is arranged to be slideably disposed between the first and second stoppers to generate a signal when they hit one another of a stopper as to indicate certain preferred arcuate swing locations of the shaft or handle during such play thereof, or indicate to the user as to inaccuracies of that swing when a sound is produced before or after the club swings through an optimum location for hitting a ball, puck or the like.

    摘要翻译: 本发明涉及一种用于向运动俱乐部或球拍的用户/支架提供可识别信号的摆动训练器装置,以在玩球或圆球期间指示最佳摆动和击打位置。 摆动训练器装置包括第一止动器和第二止动件,每个止动器和第二止动件可以可调节地布置成被支撑在运动杆或球拍的轴或手柄的选定位置。 至少一个可移动构件被布置成可滑动地设置在第一和第二止动件之间,以在它们彼此撞击止动件时产生信号,以便在其播放期间指示轴或手柄的某些优选的弧形摆动位置,或指示为 当使用者在俱乐部摆动通过用于击球,定位等的最佳位置之前或之后产生声音时,该摆动的不准确性。

    Method of loading preformed liposomes using ethanol
    10.
    发明授权
    Method of loading preformed liposomes using ethanol 失效
    使用乙醇装载预制脂质体的方法

    公开(公告)号:US06447800B2

    公开(公告)日:2002-09-10

    申请号:US08588542

    申请日:1996-01-18

    申请人: Michael J. Hope

    发明人: Michael J. Hope

    IPC分类号: A61K9127

    CPC分类号: A61K9/1278

    摘要: This invention provides methods of loading preformed liposomes by transmembrane permeation induced by alcohols. Solutes loaded into liposomes by this ethanol mediated process include both small nonpolar molecules and larger species, such as proteins and carbohydrates.

    摘要翻译: 本发明提供了通过由醇诱导的跨膜渗透来加载预制的脂质体的方法。 通过乙醇介导的方法将负载在脂质体中的溶质包括小的非极性分子和较大的物质,如蛋白质和碳水化合物。