Organoid Sample Preparation and Extraction for LC-MS Peptidomics
Emily L Miedzybrodzka1, Rachel E Foreman1, Sam G Galvin1
1Wellcome Trust - MRC Institute of Metabolic Science Metabolic Research Laboratories, University of Cambridge, Addenbrookes Hospital, Hills Road, Cambridge, UK.
Abstract:
This protocol describes the peptidomic analysis of organoid lysates, FACS-purified cell populations, and 2D culture secretions by liquid chromatography mass spectrometry (LC-MS). Currently, most peptides are quantified by ELISA, limiting the peptides that can be studied. However, an LC-MS-based approach allows more peptides to be monitored. Our group has previously used LC-MS for tissue peptidomics and secretion of enteroendocrine peptides from primary culture. Now, we extend the use to organoid models. For complete details on the use and execution of this protocol, please refer to Goldspink et al. (2020).
