Quantitative mass spectrometry in proteomics: A critical review

Marcus Bantscheff, Markus Schirle, Gavain Sweetman, Jens Rick, Bernhard Kuster

Research output: Contribution to journalArticlepeer-review

1333 Scopus citations

Abstract

The quantification of differences between two or more physiological states of a biological system is among the most important but also most challenging technical tasks in proteomics. In addition to the classical methods of differential protein gel or blot staining by dyes and fluorophores, mass-spectrometry-based quantification methods have gained increasing popularity over the past five years. Most of these methods employ differential stable isotope labeling to create a specific mass tag that can be recognized by a mass spectrometer and at the same time provide the basis for quantification. These mass tags can be introduced into proteins or peptides (i) metabolically, (ii) by chemical means, (iii) enzymatically, or (iv) provided by spiked synthetic peptide standards. In contrast, label-free quantification approaches aim to correlate the mass spectrometric signal of intact proteolytic peptides or the number of peptide sequencing events with the relative or absolute protein quantity directly. In this review, we critically examine the more commonly used quantitative mass spectrometry methods for their individual merits and discuss challenges in arriving at meaningful interpretations of quantitative proteomic data. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)1017-1031
Number of pages15
JournalAnalytical and Bioanalytical Chemistry
Volume389
Issue number4
DOIs
StatePublished - Oct 2007
Externally publishedYes

Keywords

  • Mass spectrometry
  • Quantitative proteomics
  • Stable isotope labeling

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