2026 80th Anniversary
International Convention of PSK

D+12
October 21-23, 2026

Abstracts

P8-1

Region-specific metabolomic analysis of murine organs using GC-Orbitrap and timsTOF reveals Staphylococcus aureus-induced metabolic changes

  • Kyeongmin Ryou1,2, Won-Sil Choi3, Seung-Ok Yang*3, Minhye Shin*1,2
  • 1Department of Microbiology, College of Medicine, Inha University
  • 2Program in Biomedical Science and Engineering, Inha University
  • 3National Instrumentation Center for Environmental Management, Seoul National University

Staphylococcus aureus infection can disseminate systemically, causing inflammation, tissue damage, and metabolic alterations in multiple organs. This study aims to characterize region-specific metabolic changes in the liver, heart, spleen, and kidneys of S. aureus-infected mice using GC-Orbitrap and timsTOF analytical platforms. In preliminary experiments optimizing sample parameters across organs with distinct metabolic profiles, 20 tissue sections from the heart and kidneys yielded the highest number of detected features and the largest total peak area compared to 5 or 10 sections. However, this increase was not observed in other organs, indicating that organ-specific characteristics and sample preparation affect analytical sensitivity. Finally, we compared the metabolomic profiles of infected and uninfected mice to identify infection-associated metabolic pathways and candidate biomarkers, establishing a basis for understanding the metabolic signatures of S. aureus infection during systemic organ failure.


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