Non‑invasive proteome‑wide quantification of skin barrier‑related proteins using label‑free LC‑MS/MS analysis.

ABSTRACT: A number of epidermal proteins are closely related to skin barrier function, the abnormalities of which can lead to specific skin diseases. These proteins must be quantified to further investigate the changes in the skin barrier between healthy and disease states. However, the non‑invasive and proteome‑wide quantification of skin proteins without any labelling steps remains a challenge. In this study, 3M medical adhesive tapes were used to obtain skin samples from volunteers. Proteins were extracted from fresh skin samples and digested with trypsin. Each tryptic peptide was analysed in three replicates using liquid chromatography with tandem mass spectrometry analysis and label‑free quantification. The data were searched against the Human Universal Protein Resource (UniProt) to match with

SUBMITTER: Liu M 

PROVIDER: S-EPMC7115193 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature