一种基于iSRM策略的蛋白质组质谱数据分析工具

A Data Processing Tool for Mass Spectrometry Data from iSRM Strategy in Proteomics

摘要: 由于重复性好、定量精度高，基于质谱的选择反应监测（SRM）技术在蛋白质定量分析中的应用越来越广泛。智能选择反应监测（iSRM）是一种新型的SRM实验策略。针对该策略产生的质谱数据，开发了一个肽段定量信息提取工具——iSQuant。该工具使用MATLAB脚本语言编写，简便易用。利用重复实验数据和标准实验数据对iSQuant的性能评估表明，iSQuant具有优越的可重复性能，定量结果和理论丰度线性度很高。

Abstract: In proteomics research, selected reaction monitoring (SRM) technology based on mass spectrometry has been widely applied in the protein quantitative analysis because of its high reproducibility and accuracy. Intelligent selected reaction monitoring (iSRM) technology is a new SRM experimental strategy. In order to process the mass spectrometry data produced by iSRM, a peptide quantitative information extraction tool called iSQuant is developed. iSQuant is written with MATLAB programming language, and thus is convenient and user-friendly. Finally, a replicated dataset and a standard dataset are used to evaluate the performances of iSQuant. The results show that iSQuant has superior reproducibility and linearity.