Method for making liposomes conjugated with temperature-sensitive ligands
    1.
    发明申请
    Method for making liposomes conjugated with temperature-sensitive ligands 审中-公开
    制备与温度敏感性配体结合的脂质体的方法

    公开(公告)号:US20070264322A1

    公开(公告)日:2007-11-15

    申请号:US11801713

    申请日:2007-05-09

    IPC分类号: A61K31/704 A61K9/127

    摘要: The present invention relates to a method of making a liposome composition. In particular, the invention relates to a method of making liposomes targeted to a specific cell receptor for delivery of a liposome-entrapped drug to the cell. In one embodiment, the process involves the incorporation of lipid-linkers to the surface of pre-formed liposomes, preferably at a higher temperature, followed by the conjugation of one or more temperature-sensitive ligands to the linkers associated with the liposome surface at a lower temperature to avoid deactivation of the temperature sensitive ligands. The present invention also is directed to a product prepared according to the foregoing process, and its use to treat subjects. The present invention is also directed to a kit containing lipid-linker, ligand and pre-formed liposome.

    摘要翻译: 本发明涉及一种制备脂质体组合物的方法。 特别地,本发明涉及制备靶向特定细胞受体的脂质体以将脂质体包埋的药物递送至细胞的方法。 在一个实施方案中,该方法包括将脂质连接体掺入预先形成的脂质体的表面,优选在较高温度下,随后将一种或多种温度敏感性配体与在脂质体表面相关的接头共轭 降低温度以避免温度敏感配体的失活。 本发明还涉及根据前述方法制备的产品及其用于治疗受试者的用途。 本发明还涉及含有脂质连接体,配体和预形成脂质体的试剂盒。

    Compositions and methods using novel substituted imidazolium lipids
    4.
    发明授权
    Compositions and methods using novel substituted imidazolium lipids 有权
    使用新型取代的咪唑类脂质的组合物和方法

    公开(公告)号:US6121457A

    公开(公告)日:2000-09-19

    申请号:US183634

    申请日:1998-10-30

    CPC分类号: C07D233/22 C07D233/24

    摘要: Compounds of the formula: ##STR1## are provided, in which R.sup.1 and R.sup.2 each independently represent a C.sub.8 -C.sub.24 saturated or unsaturated hydrocarbon chain, which is optionally interrupted by from 1 to 3 heteroatom moieties, such as --O--, --S--, --NH-- and --NR--. The symbol X represents --CH.sub.2 --, --O--, --S--, --NH-- or --NR--. The R group for each of the --NR-- moieties represents an alkyl group having from 1 to 4 carbon atoms. Finally, the subscript n represents the integer 1 or 2, and A.sup.- represents an anion, preferably chloride or citrate.

    摘要翻译: 提供下式的化合物,其中R 1和R 2各自独立地代表C 8 -C 24饱和或不饱和的烃链,其任选地被1至3个杂原子部分中断,例如-O - , - S - , - NH - 和-NR-。 符号X表示-CH 2 - , - O - , - S - , - NH-或-NR-。 每个-NR-部分的R基表示具有1至4个碳原子的烷基。 最后,下标n表示1或2的整数,A-表示阴离子,优选为氯化物或柠檬酸盐。

    Separation of active complexes
    5.
    发明授权
    Separation of active complexes 失效
    分离活性配合物

    公开(公告)号:US5972600A

    公开(公告)日:1999-10-26

    申请号:US482110

    申请日:1995-06-07

    摘要: The invention separates defined, active complexes by a characteristic from Defined, active complexes that share a particular physicochemical characteristic such as density, surface charge or particle size are separated from complexes formed by the association of a polynucleotide with a transfecting component that increases transfection activity, such as a lipid, cationic lipid, liposome, peptide, cationic peptide, dendrimer or polycation. In a preferred embodiment, polynucleotide-transfecting component complexes are ultracentrifuged to resolve one or more bands corresponding to complexes having a specific polynucleotide-transfecting component interaction. Polynucleotide complexes having a cationic liposome transfecting component resolve into two primary bands corresponding to complexes formed either under excess lipid conditions or under excess polynucleotide conditions. In an alternate embodiment, polynucleotide-transfecting component complexes are resolved using cross-flow electrophoresis to identify complexes having specific interactions and to separate them from excess initial components.

    摘要翻译: 本发明通过来自定义的特征分离定义的活性复合物,其共享具有特定物理化学特性如密度,表面电荷或粒度的活性配合物与由多核苷酸与增加转染活性的转染成分缔合形成的复合物分离, 例如脂质,阳离子脂质,脂质体,肽,阳离子肽,树枝状聚合物或聚阳离子。 在优选的实施方案中,将多核苷酸转染组分复合物超速离心以分离对应于具有特异性多核苷酸转染组分相互作用的复合物的一个或多个条带。 具有阳离子脂质体转染组分的多核苷酸复合物分解成对应于在过量脂质条件下或在过量多核苷酸条件下形成的复合物的两个主要条带。 在替代实施方案中,使用交叉流电泳来分离多核苷酸转染组分复合物以鉴定具有特异性相互作用的复合物并将其与过量的初始组分分离。

    Stabilized polynucleotide complexes and methods
    8.
    发明授权
    Stabilized polynucleotide complexes and methods 失效
    稳定的多核苷酸复合物和方法

    公开(公告)号:US07323297B1

    公开(公告)日:2008-01-29

    申请号:US08485430

    申请日:1995-06-07

    IPC分类号: C12Q1/68 A01N43/04 A61K31/70

    CPC分类号: A61K31/70

    摘要: The invention comprises stabilized polynucleotide complexes that have a cryoprotectant and are lyophilized. Cryoprotectant compounds comprise carbohydrates or sugars, preferably lactose and sucrose, but also glucose, maltodextrins, mannitol, sorbitol, trehalose, and others. Other suitable cryoprotectants include amino acids such as betaines and prolines. Polynucleotide complexes stabilized according to the invention can be used for transfection, and exhibit improved tranfection efficiency with respect to polynucleotide complexes without cryoprotection.

    摘要翻译: 本发明包括具有冷冻保护剂并被冻干的稳定的多核苷酸复合物。 冷冻保护剂化合物包含碳水化合物或糖,优选乳糖和蔗糖,还包括葡萄糖,麦芽糖糊精,甘露醇,山梨醇,海藻糖等。 其他合适的冷冻保护剂包括氨基酸,例如甜菜碱和脯氨酸。 根据本发明稳定的多核苷酸复合物可用于转染,并且相对于没有冷冻保护的多核苷酸复合物显示出改善的转染效率。

    Cationic lipids
    9.
    发明授权
    Cationic lipids 失效
    阳离子脂质

    公开(公告)号:US06649780B1

    公开(公告)日:2003-11-18

    申请号:US09465562

    申请日:1999-12-17

    IPC分类号: C04C1403

    CPC分类号: C07C219/06 C07C219/08

    摘要: Cationic lipids are provided which are useful in the preparation of liposomes and other lipid vesicle carriers. The lipids of the invention are particularly useful as carriers of nucleic acids and other negatively charged substances, for delivery to cells.

    摘要翻译: 提供了可用于制备脂质体和其他脂质囊泡载体的阳离子脂质。 本发明的脂质特别可用作核酸和其它带负电荷物质的载体,用于递送至细胞。