Methods for reducing or preventing liquid-liquid phase separation in high concentration protein solutions
    7.
    发明申请
    Methods for reducing or preventing liquid-liquid phase separation in high concentration protein solutions 审中-公开
    降低或防止高浓度蛋白质溶液中液 - 液相分离的方法

    公开(公告)号:US20080070230A1

    公开(公告)日:2008-03-20

    申请号:US11811517

    申请日:2007-06-11

    IPC分类号: G01N33/536 C07K1/00 G01N33/00

    CPC分类号: C07K1/36

    摘要: Methods of formulating proteins at high concentrations in protein solutions, wherein the protein solutions lack or have reduced liquid-liquid phase separation are described. Such protein solutions are substantially clear and substantially homogenous. Additionally, methods of concentrating and purifying proteins using liquid-liquid phase separation are provided.

    摘要翻译: 在蛋白质溶液中配制高浓度蛋白质的方法,其中蛋白质溶液缺乏或液 - 液相分离减少。 这种蛋白质溶液基本上是清楚的并且基本上均匀。 另外,提供了使用液 - 液相分离来浓缩和纯化蛋白质的方法。

    Prediction of relative polypeptide solubility by polyethylene glycol precipitation
    8.
    发明申请
    Prediction of relative polypeptide solubility by polyethylene glycol precipitation 审中-公开
    通过聚乙二醇沉淀预测相对多肽溶解度

    公开(公告)号:US20080003686A1

    公开(公告)日:2008-01-03

    申请号:US11804191

    申请日:2007-05-17

    IPC分类号: G01N33/00

    CPC分类号: G01N33/68 G01N33/6803

    摘要: A method is described for predicting the relative solubility of a polypeptide using polyethylene glycol (PEG) based volume exclusion precipitation. Different polypeptides can be tested for their solubilities relative to each other or relative to a reference. A single polypeptide can be tested for its relative solubility under different experimental conditions. The solubility determinations can be made by comparison based on graphs plotting the log solubility of the polypeptide against a range of PEG concentrations. Additionally, a method is provided for the high throughput visual or automated screening of multiple polypeptides for relative solubility differences, in a method that can omit the step of measuring the actual solubility or actual amount of precipitation of each sample at each PEG concentration.

    摘要翻译: 描述了一种用于使用基于聚乙二醇(PEG)的体积排阻沉淀来预测多肽的相对溶解度的方法。 可以测试不同的多肽相对于彼此或相对于参考物的溶解度。 可以在不同的实验条件下测试单个多肽的相对溶解度。 可以基于绘制多肽对一定范围的PEG浓度的对数溶解度的图进行比较来进行溶解度测定。 此外,提供了一种方法,可以省略在每个PEG浓度下测量每个样品的实际溶解度或实际沉淀量的步骤,用于多个多肽的高通量视觉或自动筛选相对溶解度差异。