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Updated: Mar 9, 2026
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Monitoring Cell-autonomous Circadian Clock Rhythms of Gene Expression Using Luciferase Bioluminescence Reporters
Published on: September 27, 2012
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Comparative Analysis of Vertebrate Diurnal/Circadian Transcriptomes
Greg Boyle1, Kerstin Richter2, Henry D Priest3
1Department of Integrative Biology and Pharmacology, McGovern Medical School, Houston, Texas, United States of America.
Plos One
|January 12, 2017
Summary
The circadian clock regulates daily physiology, but its output network is vast. Zebrafish, sharing many genes with humans, offer a valuable model for studying these rhythmic gene expression patterns.
Area of Science:
- Chronobiology
- Genomics
- Comparative transcriptomics
Background:
- The circadian clock anticipates daily environmental changes, regulating physiological processes like sleep and metabolism.
- Understanding the circadian clock's output network and its regulation of diurnal physiology remains limited.
- Zebrafish are a key vertebrate model for circadian research due to genetic similarities with humans.
Purpose of the Study:
- To perform a comparative diurnal transcriptome analysis in zebrafish liver.
- To identify rhythmic transcripts and analyze the output network's characteristics.
- To explore the translational relevance of zebrafish as a model for circadian output.
Main Methods:
- Collected zebrafish liver tissue over a 48-hour time series.
- Utilized oligonucleotide arrays for transcription profiling.
- Applied bioinformatics analysis to identify rhythmic genes and compare datasets.
Main Results:
- Identified 2609 rhythmic genes in zebrafish liver.
- Comparative analysis revealed distinct features of the circadian output network.
- Characterized the number of rhythmic genes, tissue-specific gene proportions, and transcription factor expression.
Conclusions:
- Zebrafish serve as a valuable model for dissecting vertebrate circadian output networks.
- This study provides insights into the complexity of diurnal gene regulation.
- The findings offer leads for further characterization of the diurnal cis-regulatory network.
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