MicroRNAs and Their Role in Regulating the Clock Gene Bmal1 in Mice
Author Information
Author(s): Vikram R. Shende, Marianna M. Goldrick, Suchitra Ramani, David J. Earnest
Primary Institution: Texas A&M University
Hypothesis
Specific microRNAs regulate the expression of the clock gene Bmal1 in a rhythmic manner.
Conclusion
The study found that circulating microRNAs miR-494 and miR-152 exhibit diurnal oscillations and may regulate Bmal1 expression.
Supporting Evidence
- miR-494 and miR-152 levels in serum showed significant diurnal variation.
- Over-expression of miR-494 and miR-142-3p significantly repressed Bmal1 3′ UTR activity.
- miR-142-3p did not show diurnal fluctuations in serum levels.
Takeaway
This study shows that tiny molecules called microRNAs can change levels in the blood at different times of the day and might help control a gene that keeps our body clock in sync.
Methodology
The study involved collecting blood samples from mice at different times to measure microRNA levels and using luciferase assays to test their effects on Bmal1 expression.
Potential Biases
Potential bias due to the involvement of authors from a company that provided materials for the study.
Limitations
The study was conducted on a specific mouse strain, which may limit the generalizability of the findings.
Participant Demographics
20 male Balb/C mice aged 8–10 weeks.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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