Variant-to-gene mapping followed by cross-species genetic screening identifies GPI-anchor biosynthesis as a regulator of sleep 2023 Palermo et al

Abstract

Genome-wide association studies (GWAS) in humans have identified loci robustly associated with several heritable diseases or traits, yet little is known about the functional roles of the underlying causal variants in regulating sleep duration or quality. We applied an ATAC-seq/promoter focused Capture C strategy in human iPSC-derived neural progenitors to carry out a “variant-to-gene” mapping campaign that identified 88 candidate sleep effector genes connected to relevant GWAS signals. To functionally validate the role of the implicated effector genes in sleep regulation, we performed a neuron-specific RNA interference screen in the fruit fly, Drosophila melanogaster, followed by validation in zebrafish. This approach identified a number of genes that regulate sleep including a critical role for glycosylphosphatidylinositol (GPI)–anchor biosynthesis. These results provide the first physical variant-to-gene mapping of human sleep genes followed by a model organism–based prioritization, revealing a conserved role for GPI-anchor biosynthesis in sleep regulation.

Open access, https://www.science.org/doi/10.1126/sciadv.abq0844

 

Scientists Make Progress in Decoding Genetics of Insomnia

"A research effort involving researchers from Texas A&M University, the Perelman School of Medicine at the University of Pennsylvania and Children’s Hospital of Philadelphia (CHOP) has used human genomics to identify a new genetic pathway involved in regulating sleep from fruit flies to humans—a novel insight that could pave the way for new treatments for insomnia and other sleep-related disorders."

https://neurosciencenews.com/insomnia-genetics-22222/