Evaluation of depletion of abundant plasma proteins for proteomics characterization of EVs

In this study, we aimed to investigate if the removal of abundant plasma proteins prior to EV isolation could improve plasma-derived EV characterization by LC-MS/MS by improving the proteome coverage. Plasma depletion was performed using single-use spin columns prior to SEC-based EV isolation. Afterwards, EVs derived from undepleted and depleted plasma were characterized by mass spectrometry (MS)-based proteomics using a data-independent acquisition (DIA) approach.