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Spatial proteomic and phospho-proteomic organization in three prototypical cell migration modes.
Georgios Fengos1, Alexander Schmidt2, Katrin Martin3
1ETH Zurich, D-BSSE, Mattenstrasse 26, CH-4058 Basel, Switzerland.
Proteome Science
|July 3, 2014
Summary
Cell migration relies on precise protein signaling within membrane protrusions. This study reveals distinct, cue-specific protein networks driving different cell migration modes, offering a comprehensive view of spatial signaling regulation.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- Directed cell migration necessitates precise spatiotemporal signaling of cytoskeletal and adhesion dynamics for membrane protrusion.
- Specific cues likely recruit and phosphorylate distinct protein ensembles within these protrusions.
Purpose of the Study:
- To biochemically purify and analyze extending cell protrusions responding to prototypical signaling receptors.
- To identify cue-specific protein networks governing different modes of cell migration.
Main Methods:
- Development of a novel assay for biochemical purification of extending cell protrusions.
- Application of quantitative proteomics and phospho-proteomics to analyze purified samples.
- Integration of experimental data with protein database information.
Main Results:
- Evidence for cue-specific, spatially distinct protein networks in distinct cell migration modes.
- Identification of protein and phospho-protein distributions associated with integrin, receptor tyrosine kinase, and G-protein coupled receptor signaling.
- Uncovering emergent properties of spatial signaling regulation during cell migration.
Conclusions:
- The study provides a large-scale view of protein and phospho-protein distribution in directed cell migration.
- Understanding spatial regulation of signaling enhances comprehension of cell migration mechanisms.
- This work offers valuable insights for the cell migration research community.
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