ISOTOPIC LABELING FOR THE MEASUREMENT OF GLOBAL PROTEIN LEVELS AND TURNOVER IN VIVO
    5.
    发明申请
    ISOTOPIC LABELING FOR THE MEASUREMENT OF GLOBAL PROTEIN LEVELS AND TURNOVER IN VIVO 有权
    用于测量全球蛋白质水平和转基因生物体内的同位素标记

    公开(公告)号:US20140287957A1

    公开(公告)日:2014-09-25

    申请号:US13704498

    申请日:2011-06-17

    IPC分类号: G01N33/68 G01N33/50

    摘要: An entire complement or plurality of isotopically labeled amino acids are introduced into the diet of a test subject. Sufficient amounts of the isotopically labeled amino acids are provided to the subject in order to ensure that the subject incorporates a large percentage of isotopically labeled amino acids into newly synthesized proteins. Tissue samples are removed from the subject at different points in time and proteins are extracted and separated so that different proteins of different tissues can be individually analyzed and their amount and pattern of isotopic labeling can be determined. In a preferred embodiment, the methodology can be combined with proteolytic digestion to peptides and analysis by mass spectrometry in order to measure rates of protein turnover in vivo relating to thousands of different proteins.

    摘要翻译: 将整个补体或多个同位素标记的氨基酸引入测试对象的饮食中。 向受试者提供足够量的同位素标记的氨基酸,以确保受试者将大量同位素标记的氨基酸掺入新合成的蛋白质中。 在不同的时间点从受试者中取出组织样品,提取和分离蛋白质,以便不同组织的不同蛋白质可以单独分析,并且可以测定其同位素标记的数量和模式。 在优选的实施方案中,该方法可以与肽的蛋白水解消化和质谱分析相结合,以便测量与数千种不同蛋白质相关的体内蛋白质周转率。