Methods for direct biomolecule identification by matrix-assisted laser desorption ionization (MALDI) mass spectrometry
    1.
    发明授权
    Methods for direct biomolecule identification by matrix-assisted laser desorption ionization (MALDI) mass spectrometry 有权
    通过基质辅助激光解吸电离(MALDI)质谱法进行直接生物分子鉴定的方法

    公开(公告)号:US07714276B2

    公开(公告)日:2010-05-11

    申请号:US11541380

    申请日:2006-09-29

    IPC分类号: B01D59/44

    摘要: The present invention relates to the use of post source decay (PSD) or collision induced dissociation (CID) direct tissue (DT) MALDI-TOF or DT-MALDI-TOF-TOF mass spectrographic identification of biological molecules in a tissue or cellular sample without the need for further protein extraction. This method provides for studying cells or tissues by direct tissue MALDI (DT-MALDI), thereby substituting in situ protein release for further protein extraction. Mass/intensity data was processed with Mascot© software interrogation of the NCBI database. These results are proof of principle that DT-MALDI, combined with bioinformatics, can directly identify proteins in cells and tissues from their mass spectra.

    摘要翻译: 本发明涉及在源于组织或细胞样品中的后源衰变(PSD)或碰撞诱导解离(CID)直接组织(DT)MALDI-TOF或DT-MALDI-TOF-TOF质谱图鉴定生物分子的用途,而没有 需要进一步的蛋白质提取。 该方法提供通过直接组织MALDI(DT-MALDI)研究细胞或组织,从而取代原位蛋白质释放进一步的蛋白质提取。 使用NCBI数据库的Mascot©软件询问处理质量/强度数据。 这些结果证明了DT-MALDI与生物信息学结合可以从其质谱中直接鉴定细胞和组织中的蛋白质的原理。