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High-Throughput Assays of Critical Thermal Limits in Insects
Published on: June 15, 2020
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Large scale phosphoprotein profiling to explore Drosophila cold acclimation regulatory mechanisms
Hervé Colinet1, Charles Pineau2, Emmanuelle Com2
1Université de Rennes 1, UMR CNRS 6553 ECOBIO, 263 avenue du Général-Leclerc, 35042, Rennes, France. herve.colinet@univ-rennes1.fr.
Scientific Reports
|May 12, 2017
Summary
This study reveals how cold acclimation changes protein phosphorylation in fruit flies, uncovering key regulatory networks. These findings offer new insights into how insects develop thermal tolerance.
Area of Science:
- Molecular Biology
- Insect Physiology
- Proteomics
Background:
- The mechanisms regulating thermal tolerance acquisition in insects remain largely unknown.
- Reversible protein phosphorylation is a critical post-translational modification influencing protein function rapidly.
Purpose of the Study:
- To investigate the phosphoproteomic changes associated with cold acclimation in adult Drosophila.
- To identify key regulatory networks involved in the development of thermal tolerance.
Main Methods:
- Comparative screening of phosphorylation networks in cold-acclimated versus control Drosophila.
- Utilized a modified SIMAC method coupled with multiple mass spectrometry (MS) analysis.
- Analyzed approximately 1600 phosphopeptides and 500 phosphoproteins across four biological replicates.
Main Results:
- Identified a significant number of unique and differentially phosphorylated proteins upon cold acclimation.
- Enriched Gene Ontology (GO) superclusters included cytoskeleton organization, cell cycle, RNA processing, and regulation of transport.
- Observed that phosphoproteomic alterations were predominantly localized within the cytoskeletal network, especially microtubule-associated complexes.
Conclusions:
- Cold acclimation induces substantial changes in the insect phosphoproteome, particularly affecting cytoskeletal components.
- This study provides a foundation for exploring the complex regulatory pathways underlying acquired thermal tolerance in insects.
