RRC ID 70779
Author Zhang R, Du J, Zhao X, Wei L, Zhao Z.
Title Regulation of circadian behavioural output via clock-responsive miR-276b.
Journal Insect Mol Biol
Abstract Growing evidence indicates that microRNAs play numerous important roles. However, the roles of some microRNAs involved in regulation of circadian rhythm and sleep are still not well understood. In this study, we show that the miR-276b is essential for maintaining both sleep and circadian rhythm by targeting tim, npfr1 and DopR1 genes, with miR-276b deleted mutant flies sleeping more, and vice versa in miR-276b overexpressing flies. Through analysing its promoter, we found that mir-276b is responsive to CLOCK and regulates circadian rhythm through the negative feedback loop of the CLK/CYC-TIM/PER. Furthermore, miR-276b is broadly expressed in the clock neurons and the central complexes such as the mushroom body and the fan-shape body of Drosophila brain, in which up-regulation of miR-276b in tim, npfr1 and DopR1 expressing tissues significantly causes sleep decreases. This study clarifies that the mir-276b is very important for participating in regulation of circadian rhythm and sleep.
Volume 30(1)
Pages 81-89
Published 2021-2-1
DOI 10.1111/imb.12679
PMID 33131172
MeSH Animals CLOCK Proteins / genetics CLOCK Proteins / metabolism Circadian Rhythm / genetics* Drosophila* / genetics Drosophila* / metabolism Drosophila* / physiology Drosophila Proteins / genetics Drosophila Proteins / metabolism Gene Expression Regulation MicroRNAs* / genetics MicroRNAs* / metabolism Neurons / metabolism Sleep / genetics
IF 2.533
Drosophila DGRC#103994