How cGMP-Dependent Kinase Regulates Gene Expression in C. elegans
Author Information
Author(s): Hao Yan, Xu Ningyi, Box Andrew C., Schaefer Laura, Kannan Kasthuri, Zhang Ying, Florens Laurence, Seidel Christopher, Washburn Michael P., Wiegraebe Winfried, Mak Ho Yi
Primary Institution: Stowers Institute for Medical Research
Hypothesis
How does EGL-4, the Caenorhabditis elegans PKG ortholog, modulate foraging behavior and egg-laying and what are the downstream effectors of EGL-4 activity?
Conclusion
EGL-4 controls egg laying via a gene that encodes a novel protein expressed in the uterine epithelium, demonstrating that active EGL-4/PKG regulates gene expression through a conserved histone deacetylase complex.
Supporting Evidence
- EGL-4 activity was shown to modulate gene expression in multiple tissues.
- Overexpression of Y45F10C.2 caused retention of fertilized eggs.
- Loss of hda-2 function suppressed excessive dwelling and egg-laying phenotypes.
Takeaway
Scientists studied a protein in tiny worms that helps them decide when to eat and lay eggs, finding that it works by turning on certain genes.
Methodology
The study used a combination of genetic screens and proteomic analysis to identify gene expression changes in C. elegans.
Limitations
The study does not fully elucidate the time-scale of physiological responses following EGL-4 activation.
Participant Demographics
C. elegans nematodes were used in the study.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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