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MicroRNAs Regulate Sleep and Sleep Homeostasis in Drosophila. | LitMetric

MicroRNAs Regulate Sleep and Sleep Homeostasis in Drosophila.

Cell Rep

Department of Biology, Volen National Center for Complex Systems and National Center for Behavioral Genomics, Brandeis University, Waltham, MA 02454-9110, USA. Electronic address:

Published: June 2018

AI Article Synopsis

Article Abstract

To discover microRNAs that regulate sleep, we performed a genetic screen using a library of miRNA sponge-expressing flies. We identified 25 miRNAs that regulate baseline sleep; 17 were sleep-promoting and 8 promoted wake. We identified one miRNA that is required for recovery sleep after deprivation and 8 miRNAs that limit the extent of recovery sleep. 65% of the hits belong to human-conserved families. Interestingly, the majority (75%), but not all, of the baseline sleep-regulating miRNAs are required in neurons. Sponges that target miRNAs in the same family, including the miR-92a/92b/310 family and the miR-263a/263b family, have similar effects. Finally, mutation of one of the screen's strongest hits, let-7, using CRISPR/Cas-9, phenocopies sponge-mediated let-7 inhibition. Cell-type-specific and temporally restricted let-7 sponge expression experiments suggest that let-7 is required in the mushroom body both during development and in adulthood. This screen sets the stage for understanding the role of miRNAs in sleep.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6091868PMC
http://dx.doi.org/10.1016/j.celrep.2018.05.078DOI Listing

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