Hybrid phosphoinositide phospholipids: compositions and uses
    2.
    发明申请
    Hybrid phosphoinositide phospholipids: compositions and uses 审中-公开
    混合磷酸肌醇磷脂:组合物和用途

    公开(公告)号:US20050148042A1

    公开(公告)日:2005-07-07

    申请号:US10510197

    申请日:2003-03-31

    摘要: The methods and compositions disclosed herein concern the synthesis of a novel class of “two-headed” phospholipid-phosphoinositide hybrids possessing a carbon backbone, such as 2,3-diacylthreitol, erythritol or a synthetic module. The second phospholipid head group allows introduction of a biochemical or chemical moiety in a position orthogonal in space to those occupied by the phosphoinositide head group and the two acyl chains. The diacyl moieties allow for the incorporation of Pea-PIP2 into a lipid bilayer, while the Ptdlns(4,5)P2 moiety in the aqueous layer is specifically recognized by lipid binding proteins. In alternative embodiments of the invention, reporters, for example biotin, fluorophores and/or spin labels, are attached to the free amino group of the head groups of such molecules to specifically target the reporters to the lipid-water interface.

    摘要翻译: 本文公开的方法和组合物涉及具有碳骨架的新型“双头”磷脂 - 磷酸肌醇混合物的合成,例如2,3-二酰基硫代糖,赤藓糖醇或合成模块。 第二个磷脂头组允许在与磷酸肌醇头基和两个酰基链占据的位置上在空间正交的位置引入生物化学或化学部分。 二酰基部分允许将Pea-PIP 2 N 2掺入脂质双层中,而水层中的Ptdlns(4,5)P 2 H 2部分被 脂质结合蛋白。 在本发明的替代实施方案中,记录者例如生物素,荧光团和/或旋转标记连接到这些分子的头基的游离氨基上,以将记录特异性地靶向脂质 - 水界面。

    Assaying apparatus, kit, and method for lipids and associated enzymes
    3.
    发明申请
    Assaying apparatus, kit, and method for lipids and associated enzymes 审中-公开
    脂质和相关酶的测定仪器,试剂盒和方法

    公开(公告)号:US20060240497A1

    公开(公告)日:2006-10-26

    申请号:US11473573

    申请日:2006-06-22

    IPC分类号: G01N33/53

    摘要: Lipid assay method, kit, and apparatus involving exposure of a protein, having a lipid recognition motif that interacts with a target lipid and a competing lipid, to a solution containing the competing lipid, and determining whether the target lipid is present in the solution. The target lipid has a stronger affinity to the lipid recognition motif than does the competing lipid. The lipid recognition motif is preferably a pleckstrin homology (PH) domain, with the target lipid being a phosphoinositide. The assay determines activity of a lipid kinase, the target lipid being a phosphorylation product of a reaction between the lipid kinase and a substrate lipid. The assay can be a cancer screening method for detection of cancer cells, where detection of certain levels of a PI(3,4,5)P3 target lipid is an indicator of a cancer cell.

    摘要翻译: 脂质测定方法,试剂盒和装置,其涉及具有与靶脂质和竞争性脂质相互作用的脂质识别基序的蛋白质暴露于含有竞争性脂质的溶液中,以及确定溶液中是否存在目标脂质。 目标脂质对脂质识别基序的亲和力高于竞争脂质。 脂质识别基序优选是pleckstrin同源性(PH)结构域,其中目标脂质是磷酸肌醇。 该测定法确定脂质激酶的活性,目标脂质是脂质激酶和底物脂质之间的反应的磷酸化产物。 该测定可以是用于检测癌细胞的癌症筛选方法,其中检测某些水平的PI(3,4,5)P3靶标脂质是癌细胞的指标。