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Quantifying protein dynamics and stability in a living organism
Ruopei Feng1, Martin Gruebele2,3,4, Caitlin M Davis5,6
1Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
Nature Communications
|March 14, 2019
Summary
This study introduces a new method to track protein dynamics in live animals, overcoming limitations of traditional cell studies. This technique allows for real-time analysis of protein stability and behavior within living multicellular organisms.
Area of Science:
- Cell Biology
- Biophysics
- Microscopy
Background:
- Fluorescence microscopy is crucial for studying biomolecule dynamics in cultured cells.
- Analyzing protein dynamics in live vertebrate organisms presents significant challenges.
- Existing methods lack the resolution for time-resolved data in vivo.
Purpose of the Study:
- To develop a novel pipeline for probing protein dynamics in living multicellular organisms.
- To overcome limitations of studying protein stability and dynamics in vitro.
- To enable time-resolved measurements of endogenously expressed proteins in vivo.
Main Methods:
- Integration of meganuclease-mediated mosaic transformation.
- Application of fluorescence-detected temperature-jump microscopy.
- Development of a customized pipeline for live organism studies.
Main Results:
- Demonstrated a feasible method for studying protein dynamics in vivo.
- Successfully probed the dynamics and stability of endogenously expressed proteins.
- Enabled measurements across different tissues of living multicellular organisms.
Conclusions:
- The developed pipeline offers a powerful tool for live organism biophysical studies.
- This approach advances our ability to understand protein behavior in complex biological systems.
- It opens new avenues for investigating cellular processes in their native environment.
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