UPLC–MSE application in disease biomarker discovery: The discoveries in proteomics to metabolomics

• Proteomics and metabolomics have been applied to disease biomarker discovery.
• Proteomics and metabolomics have provided insight on the molecular events for disease.
• UPLC–MSE is one of the most versatile techniques in proteomics and metabolomics.
• UPLC–MSE application was highlighted to assess protein and metabolite in diseases.

In the last decade, proteomics and metabolomics have contributed substantially to our understanding of different diseases. Proteomics and metabolomics aims to comprehensively identify proteins and metabolites to gain insight into the cellular signaling pathways underlying disease and to discover novel biomarkers for screening, early detection and diagnosis, as well as for determining prognoses and predicting responses to specific treatments. For comprehensive analysis of cellular proteins and metabolites, analytical methods of wider dynamic range higher resolution and good sensitivity are required. Ultra performance liquid chromatography–mass spectrometryElevated Energy (UPLC–MSE) is currently one of the most versatile techniques. UPLC–MSE is an established technology in proteomics studies and is now expanding into metabolite research. MSE was used for simultaneous acquisition of precursor ion information and fragment ion data at low and high collision energy in one analytical run, providing similar information to conventional MS2. In this review, UPLC–MSE application in proteomics and metabolomics was highlighted to assess protein and metabolite changes in different diseases, including cancer, neuropsychiatric pharmacology studies from clinical trials and animal models. In addition, the future prospects for complete proteomics and metabolomics are discussed.

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