Three DNA loops prove essential for efficient wing tissue regeneration in fruit flies
After an injury, DNA not only changes its activity but also the way it is organized spatially within the cell nucleus. In this process, certain regions of DNA establish new physical contacts through chromatin loops that act as bridges, bringing together sequences that are far apart in the genome's linear sequence. Now, a study has identified—in an animal model—the formation of these loops as an…
A recent study has revealed that three DNA loops play a vital role in efficient wing tissue regeneration in fruit flies, as discovered through research on the model organism Drosophila melanogaster. The findings, published in the journal Science Advances, indicate that these loops form through spatial changes in DNA organization within the cell nucleus, acting as bridges to connect distant genomic sequences.
Professor Montserrat Corominas, who led the study at the University of Barcelona, emphasizes that genome architecture serves as a new layer of regulation in the regenerative process, beyond the activation or repression of specific genes. The research team used imaginal disks from fruit fly wings to observe that disrupting the identified DNA loops significantly reduced tissue regenerative capacity, while overall organism development remained largely unaffected.
This discovery highlights the importance of three-dimensional genome organization in tissue repair and unveils an additional regulatory mechanism governing gene expression during regeneration.
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