3. KONFERENCE ČESKÉ SPOLEČNOSTI PRO HMOTNOSTNÍ SPEKTROMETRII - Sborník abstraktů

Significance of the Topic

Mass spectrometry (MS) is a cornerstone technology in analytical chemistry, providing unrivalled sensitivity and specificity for molecular analysis. The 3rd Conference of the Czech Society for Mass Spectrometry showcased the latest advances in MS methods and instrumentation, highlighting its critical role in fields ranging from ion chemistry and proteomics to food safety and clinical diagnostics. These developments drive improved understanding of biological systems, environmental monitoring, and quality control in regulated industries.

Aims and Overview of the Conference Contributions

• Present cutting-edge research in ion chemistry, including gas-phase studies of reactive intermediates and superelectrophiles.
• Demonstrate novel MS applications in biology and proteomics, such as in-cell cross-linking and quantitative phosphoproteomics using SILAC.
• Highlight ambient ionization techniques for real-time analysis of exhaled breath and food contaminants.
• Explore MS in organic analysis, environmental monitoring, and industrial analytics, including profiling of biofilms and hormone residues in water.
• Showcase MS in clinical and pharmaceutical fields, from bacterial identification by MALDI-TOF to quantification of biologic drugs.

Methodology and Instrumentation

• Soft ionization techniques: ESI, APCI, DESI, MALDI, SESI, DBD plasma, SIFT-MS.
• High-resolution analyzers: Orbitrap, Q-TOF, TOF with ion mobility (TWIMS), triple quadrupole and QTRAP.
• Separation platforms: UHPLC, CE, capillary electrophoresis–MALDI imaging, supercritical fluid chromatography (UPC2), SPE and in-tip µ-SPE.
• Quantitative approaches: SILAC, dynamic SILAC, stable isotope-labeled internal standards, SRM/MRM on triple quads.
• Data processing: software tools for similarity search (SimTandem), proteome databases, chemometric screening (UNIFI, Quanpedia).

Main Results and Discussion

• Identification of over 7,000 phosphorylation sites by TiO2 enrichment and LC-Orbitrap MS, revealing ATR-dependent signaling in leukemic cells.
• PIR cross-linking captured thousands of in-cell protein–protein topologies in bacterial and human cells.
• Ambient ionization MS (nanoDESI, SIFT-MS) achieved ppb–ppt sensitivity for breath metabolites and bacterial volatile profiling.
• Metaproteomics of marine biofilms and Chernobyl-grown soybean seeds elucidated microbial community functions and stress responses.
• MALDI-TOF/TOF imaging enhanced by sub-atmospheric deposition and fast laser scanning achieved high-resolution tissue maps in minutes.

Benefits and Practical Applications

• Enhanced drug discovery and pharmacokinetics via accurate quantification of biotherapeutics and metabolic biomarkers.
• Non-invasive diagnostics through real-time breath analysis and microbial profiling without culture.
• Food and environmental safety: rapid multi-mycotoxin screening in cereals, brewing raw materials, and water contaminants.
• Clinical microbiology: fast pathogen identification, antibiotic susceptibility, and virulence factor detection by MALDI-TOF.
• Organic and industrial chemistry: mechanistic insights into gold- and silver-catalyzed reactions using gas-phase ESI-MS.

Future Trends and Opportunities

• Integration of ion mobility for higher throughput and conformational analysis in proteomics and metabolomics.
• Advances in ambient and in-vivo MS for point-of-care diagnostics and personalized medicine.
• Expansion of imaging MS to subcellular spatial resolution with improved laser scanning and data workflows.
• Development of comprehensive multi-analyte assays combining high-resolution mass spectrometry and machine learning.
• Broader adoption of high-definition MS in routine laboratories through automated calibration and simplified interfaces.

Conclusions

The conference underscored the versatility of mass spectrometry and its rapid technological evolution. From fundamental studies of reactive ions to translational applications in healthcare and environmental monitoring, MS continues to expand its impact. Collaborative efforts in instrumentation, method development, and data analysis promise even greater sensitivity, speed, and reliability, solidifying MS as an indispensable tool in analytical science.

Reference

• Nudnova M. M. et al.: Rapid Commun. Mass Spectrom. 26, 1447–1452 (2012).
• Martinez-Lozano Sinues P. et al.: PLoS ONE 8(4), e59909 (2013).
• Wang D. et al.: J. Am. Chem. Soc. 134, 9012–9019 (2012).