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Updated: Feb 4, 2026

Label-Free Quantitative Proteomics Workflow for Discovery-Driven Host-Pathogen Interactions
Published on: October 20, 2020
In vivo Proteomics Approaches for the Analysis of Bacterial Adaptation Reactions in Host-Pathogen Settings
Henrike Pförtner1, Maren Depke1, Kristin Surmann1
1Interfaculty Institute for Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany.
Abstract:
Proteome profiling of bacteria internalized by host cells is still a challenging task, due to low amounts of bacterial proteins in host-pathogen settings and the high amounts of contaminating host proteins. Here, we describe a workflow for the enrichment of intracellular bacteria by fluorescence activated cell sorting which in combination with highly sensitive LC-MS/MS allows monitoring of about 1200 proteins from 2 to 4 × 106 internalized bacterial cells as starting material.
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