Recent advances in coupling capillary electrophoresis-based separation techniques to ESI and MALDI-MS

Area of Science:

• Analytical Chemistry
• Biochemistry
• Separation Science

Background:

• Capillary electrophoresis (CE) coupled with mass spectrometry (MS) provides a potent analytical platform for complex biological samples.
• This technique leverages the high separation efficiency of CE and the sensitive, selective detection capabilities of MS.
• Electrospray ionization (ESI) and matrix-assisted laser desorption/ionization (MALDI) are key soft ionization methods for CE-MS coupling.

Purpose of the Study:

• To review technological advancements in CE and chip-based CE coupled with ESI-MS and MALDI-MS over the last five years.
• To highlight recent applications of these developed CE-MS platforms in analyzing metabolites, peptides, and proteins.

Main Methods:

• Focus on recent innovations in the coupling of CE and chip-based CE with ESI-MS and MALDI-MS.
• Review of literature published within the past five years concerning technological progress in CE-MS.
• Selection and discussion of representative applications showcasing the utility of new CE-MS platforms.

Main Results:

• Significant technological progress has been made in integrating CE and chip-based CE with ESI and MALDI-MS.
• These advancements have enhanced the capabilities for analyzing complex biological mixtures.
• Successful applications demonstrate the platforms' effectiveness in characterizing metabolites, peptides, and proteins.

Conclusions:

• The combination of CE with ESI-MS and MALDI-MS continues to be a powerful and evolving analytical strategy.
• Recent technological developments have expanded the scope and sensitivity of CE-MS for biomolecular analysis.
• These platforms are crucial for the in-depth characterization of metabolites, peptides, and proteins in complex biological systems.