Organoid Sample Preparation and Extraction for LC-MS Peptidomics

Area of Science:

• Biochemistry
• Proteomics
• Cell Biology

Background:

• Current peptide quantification methods like ELISA are limited in scope.
• Liquid chromatography-mass spectrometry (LC-MS) offers a more comprehensive approach to peptide analysis.
• Previous work established LC-MS for tissue and primary cell peptidomics.

Purpose of the Study:

• To describe a protocol for peptidomic analysis of organoid models.
• To extend LC-MS-based peptidomics to organoid lysates, cell populations, and secretions.
• To provide a method for broader peptide monitoring in biological samples.

Main Methods:

• Peptidomic analysis using liquid chromatography-mass spectrometry (LC-MS).
• Application to organoid lysates, FACS-purified cell populations, and 2D culture secretions.
• Protocol builds upon previous LC-MS applications in tissue and primary cell studies.

Main Results:

• The protocol facilitates comprehensive peptidomic profiling of organoid models.
• LC-MS enables the monitoring of a wider range of peptides than conventional methods.
• Successful application of LC-MS to various organoid-derived biological samples.

Conclusions:

• The described LC-MS protocol is effective for organoid peptidomics.
• This approach enhances the scope of peptide analysis in biological research.
• The method is valuable for studying peptide secretion and composition in organoid systems.