In the decade after being awarded the Nobel Prize in
Chemistry
in 2002, matrix-assisted laser desorption/ionization time-of-flight
mass spectrometry (MALDI-TOF MS) has been widely used as an analytical
chemistry tool for the detection of large and small molecules (e.g.,
polymers, proteins, peptides, nucleic acids, amino acids, lipids,
etc.) and for clinical analysis and research (e.g., pathogen identification,
genetic disorders screening, cancer diagnosis, etc.). In view of the
fast development of MALDI-TOF MS in clinical usage, this review systematically
summarizes the most important applications of MALDI-TOF MS in clinical
analysis and research by analyzing MALDI TOF MS-related reviews collected
in the Web of Science database. On the basis of the analysis of keyword
co-occurrence of over 2000 review articles, four themes consisting
of “pathogen identification”, “disease diagnosis”,
“nucleic acids analysis”, and “small molecules
analysis” were found. For each theme, the review further outlined
their application implications, analytical methods, and systems as
well as limitations that need to be addressed. Overall, the review
summarizes and elaborates on the clinical applications of MALDI-TOF
MS, providing a comprehensive picture for researchers embarking on
MALDI TOF MS-related clinical analysis and research.