ArticleJournal of proteome research2025
SPE-CZE-MS Quantifies Zeptomole Amounts of Phosphorylated Peptides.
Article in Journal of proteome research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Understanding Mass Spectrometry: From Ion Generation to Spectral Interpretation.Journal of mass spectrometry : JMS · 2026Article
- Expanding the Global Map of Protein Post-Translational Modifications With Immunoaffinity Enrichment and nDIA Analysis on the Orbitrap Astral Mass Spectrometer.Molecular & cellular proteomics : MCP · 2026Article
- Recent Developments and Applications of Capillary and Microchip Electrophoresis in Proteomics and Peptidomics (2023-2025).Journal of separation science · 2026Review
- An Overview of Mass Spectrometry-Based Methods to Analyze Post-Translational Modifications.Methods in molecular biology (Clifton, N.J.) · 2026Review
- Recent Developments in Capillary and Microchip Electroseparations of Peptides (2023-mid 2025).Electrophoresis · 2026Review
- Development and validation of a streamlined workflow for proteomic analysis of proteins and post-translational modifications from dried blood.bioRxiv : the preprint server for biology · 2025Article
- Online Coupling of Acoustic Droplet Levitation with Capillary Electrophoresis Mass Spectrometry Enables Midair Enrichment for Improved Proteomic Sensitivity.Analytical chemistry · 2025Article
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8 authors.
Funding
Abstract
Capillary zone electrophoresis (CZE) is gaining attention in the field of single-cell proteomics for its ultralow-flow and high-resolution separation abilities. Even more sample-limited yet rich in biological information are phosphoproteomics experiments, as the phosphoproteome composes only a fraction of the whole cellular proteome. Rapid analysis, high sensitivity, and maximization of sample utilization are paramount for single-cell analysis. Some challenges of coupling CZE analysis with mass spectrometry analysis (MS) of complex mixtures include 1. sensitivity due to volume loading limitations of CZE and 2. incompatibility of MS duty cycles with electropherographic time scales. Here, we address these two challenges as applied to single-cell-equivalent phosphoproteomics experiments by interfacing a microchip-based CZE device integrated with a solid-phase-extraction (SPE) bed with the Orbitrap Astral mass spectrometer. Using 225 phosphorylated peptide standards and phosphorylated peptide-enriched mouse brain tissue, we investigate microchip-based SPE-CZE functionality, quantitative performance, and complementarity to nano-LC-MS (nLC-MS) analysis. We highlight unique SPE-CZE separation mechanisms that can empower fit-for-purpose applications in single-cell-equivalent phosphoproteomics.
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Registered trials
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