申请人:President and Fellows of Harvard College
公开号:US20180209985A1
公开(公告)日:2018-07-26
In some embodiments, a mass spectrometry tag may comprise a linker region, a mass balance region, and a reporter region. The mass spectrometry tag may be configured to fragment in a mass spectrometer via an energy dependent process to produce multiple reporter molecules. For example, the reporter region of the tag may be configured to produce at least two reporter molecules via fragmentation. In some embodiments, one or more regions of the tag may comprise at least one heavy isotope. In some such embodiments, the ability to fragment into multiple reporter molecules as well as the placement and/or number of heavy isotope(s) allows the mass spectrometry tag to be distinguished from other similar mass spectrometry tags. In some such embodiments, the ability to distinguish between tags having the same or substantially similar total mass to charge ratio and reporter region mass may allow the system to have a greater multiplexing capacity than conventional systems.
在某些实施例中,质谱标签可能包括一个连接区、一个质量平衡区和一个报告区。质谱标签可能被配置为在质谱仪中通过一个能量依赖的过程进行碎裂,以产生多个报告分子。例如,标签的报告区可能被配置为通过碎裂产生至少两个报告分子。在某些实施例中,标签的一个或多个区域可能包含至少一个重同位素。在某些这样的实施例中,能够碎裂成多个报告分子以及重同位素的位置和/或数量允许将质谱标签与其他类似的质谱标签区分开来。在某些这样的实施例中,能够区分具有相同或基本相似总质荷比和报告区质量的标签,可能使系统具有比传统系统更大的多重复用能力。