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Sample Preparation for Endopeptidomic Analysis in Human Cerebrospinal Fluid
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Sample Preparation for Endopeptidomic Analysis in Human Cerebrospinal Fluid
Kapitel
- 00:05Titel
- 01:12Pre-treatment of Bulk Volume CSF without Quantification
- 02:24Pre-treatment of Small Volume CSF Samples with Isobaric Labeling
- 04:00MWCO Filtration, Desalting, and Sample Clean-up by Solid Phase Extraction
- 06:00Offline High-pH Reverse Phase HPLC Sample Fractionation
- 07:09LC-MS Analysis
- 07:47Results: Peptide Identification After LC-MS Analysis
- 09:13Conclusion
A method for mass spectrometric analysis of endogenous peptides in human cerebrospinal fluid (CSF) is presented. By employing molecular weight cut-off filtration, chromatographic pre-fractionation, mass spectrometric analysis and a subsequent combination of peptide identification strategies, it was possible to expand the known CSF peptidome nearly ten-fold compared to previous studies.
