Objective:

To summarize recent advancements in mass spectrometry related to lipid antigen presentation, metabolite prediction, and contaminant detection in water.

Key Findings:

• CD1c can present lipids sideways, enhancing immune recognition flexibility.
• DeepMet successfully predicted and validated dozens of previously unrecognized mammalian metabolites.
• The LC–MS/MS method detected 39 contaminants in water with ultra-trace sensitivity.

Interpretation:

These studies highlight innovative approaches in mass spectrometry that enhance our understanding of immune responses, metabolomics, and environmental monitoring.

Limitations:

• The study on CD1c may not encompass all lipid types or immune contexts.
• DeepMet's predictions depend on the quality of existing metabolite data.
• The LC–MS/MS method may require further validation across diverse environmental conditions.

Conclusion:

The advancements in mass spectrometry techniques provide significant insights into immune recognition, metabolite discovery, and environmental contaminant analysis.