Mass spectrometry imaging maps skin metabolites, biomarkers and topical drug penetration
The review outlines recent advances in mass spectrometry imaging (MSI) for dermatological research, detailing ionization sources and experimental workflows. Investigators highlight MSI’s capacity for label-free, simultaneous detection of endogenous metabolites, potential disease biomarkers, and exogenous compounds in skin tissue. The authors note its growing utility as a complementary tool for evaluating topical pharmaceutical and cosmetic penetration, while also addressing current technical limitations. The work underscores MSI’s potential to advance dermatological research and support future clinical applications, though routine diagnostic adoption requires further validation.
The original study
Visualizing the molecular landscape of skin: applications and perspectives of mass spectrometry imaging.
- Authors
- Yan X, Fang Z, Yi M, Zhou L, He H, Jia Y
- Journal
- Analytical and bioanalytical chemistry
- Type
- Journal Article, Review
- PMID
- 42681075
Original abstract
Mass spectrometry imaging (MSI) has emerged as a powerful tool in dermatological research due to its high sensitivity, label-free detection, and ability to simultaneously analyze multiple molecular species. This review systematically summarizes recent advancements in the application of MSI for visualizing both endogenous metabolites/biomacromolecules and exogenous compounds in the skin. Firstly, the basics of MSI are introduced, including the different ionization sources and the general workflow of MSI experiments. Then, the applications of MSI in skin physiology and metabolism analysis and identification of molecular characteristics or potential biomarkers of skin pathological status are summarized. Furthermore, MSI is also widely used as a complementary method for skin penetration studies of topical pharmaceutical and cosmetic ingredients. Examples of MSI applications are presented to indicate the diverse fields MSI contributes to and emphasize the advantages of MSI compared to conventional techniques. Nevertheless, the limitations and challenges are also discussed. Overall, MSI is expected to further advance both dermatological research and clinical applications.