Optimization of Upstream Extracellular Vesicle Processes Using PATfix® Analytical Tools

Extracellular vesicles (EV) are lipid bound products secreted by cells. Among them, exosomes have great potential for clinical applications. Animal and human-derived components used in cell culture, such as fetal bovine serum (FBS), naturally contain exosomes that can cross-contaminate the desired product. In order to study exosomes derived from cells of interest, multiple producers have come up with exosome-depleted FBS (EV (-) FBS) generated using different approaches. In this work we evaluated commercially available EV (-) FBS supplements for residual exosome content and tested their performance in upstream exosome production process. The analysis was performed with PATfix high pressure liquid chromatography system using PATfix size exclusion (SEC) analytical method.

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