MPA PASS Enables Stitched Multiplex Multi-Dimensional EV Repertoire Analysis

Extracellular vesicles (EVs) of various types are released or shed from all cells. EVs carry proteins and contain additional protein and nucleic acid cargo that relates to their biogenesis and cell of origin.  EV cargo in liquid biopsies of widespread interest due to its ability to provide a retrospective snapshot of cell state at the time of EV release. For the purposes of EV cargo analysis and repertoire profiling, multiplex assays are an essential tool in multiparametric analyte studies but are still being developed for high-parameter EV protein detection. Although bead-based EV multiplex analyses offer EV profiling capabilities with conventional flow cytometers, the utilization of EV multiplex assays has been limited by the lack of software analysis tools for such assays. Therefore, to facilitate robust EV repertoire studies, we have developed a free, open-source software (MPAPASS) for stitched multiplex analysis, EV database-compatible reporting, and visualization of EV repertoires.