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An AMPK biosensor for Caenorhabditis elegans
Lynly Carman1, Ryan J Schuck1, Edwin Li1
1Department of Biology, Saint Joseph's University, Philadelphia, PA.
Micropublication Biology
|July 25, 2022
Summary
We developed a new biosensor to study Adenosine monophosphate-activated kinase (AMPK) in real-time within individual cells of C. elegans. This tool reveals varied AMPK activation across tissues and in response to genetic mutations.
Area of Science:
- Cellular biology
- Molecular biology
- Genetics
Background:
- Adenosine monophosphate-activated kinase (AMPK) is crucial for cellular stress responses.
- Previous AMPK studies in C. elegans lacked cellular resolution, limiting insights into real-time dynamics and physiological correlations.
Purpose of the Study:
- To develop and validate a codon-adapted AMPK biosensor (AMPKAR-EV) for C. elegans.
- To investigate tissue-specific AMPK activation patterns.
- To analyze AMPK activity in the context of specific mutations.
Main Methods:
- Codon adaptation of the AMPKAR-EV biosensor for C. elegans.
- Expression of the biosensor in various C. elegans tissues.
- Analysis of biosensor activity in wild-type and mutant strains.
Main Results:
- The AMPKAR-EV biosensor was successfully adapted for C. elegans.
- Heterogeneous AMPK activation was observed across different tissues, including the intestine, neurons, and muscle.
- The biosensor effectively detected changes in AMPK activity related to mutations at predicted regulatory sites (T243 and S244) on the AMPK α subunit (AAK-2).
Conclusions:
- The AMPKAR-EV biosensor provides a valuable tool for real-time, cellular-level analysis of AMPK activity in C. elegans.
- This approach enables detailed investigation of AMPK's role in tissue-specific stress responses and the impact of genetic variations.
