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随着蛋白质组学研究的不断深入,基于质谱的选择反应监测技术(SRM)已经成为以发现生物标志物为代表的定向蛋白质组学研究的重要手段.SRM技术根据假设信息,特异性地获取符合假设条件的质谱信号,去除不符合条件的离子信号干扰,从而得到特定蛋白质的定量信息.SRM技术具有更高的灵敏度和精确性、更大的动态范围等优势.该技术可分为实验设计、数据获取和数据分析三个步骤.在这几个步骤中,最重要的是利用生物信息学手段总结当前实验数据的结果,并用机器学习方法和总结的经验规则进行SRM实验的母离子和子离子对的预测.针对数据质控和定量的生物信息学方法研究在提高SRM数据可靠性方面具有重要作用.此外,为方便SRM的研究,本文还收集、汇总了SRM技术相关的软件、工具和数据库资源.随着质谱仪器的不断发展,新的SRM实验策略以及分析方法、计算工具也应运而生.结合更优化的实验策略、方法,采用更精准的生物信息学算法和工具,SRM在未来蛋白质组学的发展中将发挥更加重要的作用.
With the deepening of proteomics research, mass spectrometry-based selective reaction monitoring (SRM) has become an important means of directed proteomics research, such as the discovery of biomarkers.SRM technology based on the hypothetical information, specifically to obtain compliance Assuming conditions of the mass spectrometry signal to remove unqualified ion signal interference to obtain quantitative information of specific proteins.SRM technology has the advantages of higher sensitivity and accuracy, greater dynamic range, etc. The technology can be divided into experimental design, Data acquisition and data analysis in these three steps.In these steps, the most important is the use of bioinformatics tools to summarize the results of the current experimental data, and machine learning methods and lessons learned rule SRM experiments with precursor ions and ion pairs The research of bioinformatics methods for data quality control and quantification plays an important role in improving the reliability of SRM data.In addition, to facilitate the research of SRM, this paper also collects and summarizes the SRM related software, tools and database resources With the continuous development of mass spectrometry instruments, new SRM experimental strategies and analytical methods, computational tools Came into being. Combined with a more optimal experimental strategies, methods, a more accurate bioinformatic algorithms and tools, SRM play a more important role in the future development of proteomics.