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Sample Preparation for Endopeptidomic Analysis in Human Cerebrospinal Fluid
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Peptidomic Workflow Applied to Cerebrospinal Fluid Analysis.

Rustam H Ziganshin1, Sergey I Kovalchuk2, Igor V Azarkin2

  • 1Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russian Federation. rustam.ziganshin@gmail.com.

Methods in Molecular Biology (Clifton, N.J.)
|August 22, 2019
PubMed
Summary

This study presents a rapid workflow for analyzing cerebrospinal fluid (CSF) peptides. The method identifies over 1100 peptides, aiding in disease biomarker discovery and understanding neurological disorders.

Keywords:
Cerebrospinal fluidEndogenous peptidesLC-MSPeptide isolationPeptidomeSDB-RPS StageTips

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Area of Science:

  • Biochemistry
  • Proteomics
  • Neuroscience

Background:

  • Proteo-peptidomic profiling of biofluids is crucial for identifying disease biomarkers and understanding pathological mechanisms.
  • Guillain-Barre syndrome (GBS) is a rare peripheral nervous system disorder with an unknown etiology, previously studied via CSF and plasma changes.

Purpose of the Study:

  • To describe a workflow for the analysis of endogenous peptides from cerebrospinal fluid (CSF).
  • To establish a rapid and efficient method for proteo-peptidomic profiling of CSF samples.

Main Methods:

  • Sample preparation for CSF.
  • Liquid chromatography-mass spectrometry (LC-MS) analysis.
  • Bioinformatics analysis for peptide identification.

Main Results:

  • Identification of over 1100 peptides from approximately 181 protein groups.
  • Analysis completed in approximately 3 hours from a single CSF sample.
  • Workflow validated on CSF samples from non-neurological, non-oncological patients.

Conclusions:

  • The developed workflow enables rapid and comprehensive proteo-peptidomic profiling of CSF.
  • This method facilitates efficient disease biomarker discovery and the study of neurological conditions.
  • The workflow provides a foundation for further research into CSF-based diagnostics.