Academic Journal
CAG repeat expansion in the Huntington's disease gene shapes linear and circular RNAs biogenesis.
| Title: | CAG repeat expansion in the Huntington's disease gene shapes linear and circular RNAs biogenesis. |
|---|---|
| Authors: | Dilara Ayyildiz, Guendalina Bergonzoni, Alan Monziani, Takshashila Tripathi, Jessica Döring, Emanuela Kerschbamer, Francesca Di Leva, Elia Pennati, Luisa Donini, Marina Kovalenko, Jacopo Zasso, Luciano Conti, Vanessa C Wheeler, Christoph Dieterich, Silvano Piazza, Erik Dassi, Marta Biagioli |
| Source: | PLoS Genetics, Vol 19, Iss 10, p e1010988 (2023) |
| Publisher Information: | Public Library of Science (PLoS), 2023. |
| Publication Year: | 2023 |
| Collection: | LCC:Genetics |
| Subject Terms: | Genetics, QH426-470 |
| More Details: | Alternative splicing (AS) appears to be altered in Huntington's disease (HD), but its significance for early, pre-symptomatic disease stages has not been inspected. Here, taking advantage of Htt CAG knock-in mouse in vitro and in vivo models, we demonstrate a correlation between Htt CAG repeat length and increased aberrant linear AS, specifically affecting neural progenitors and, in vivo, the striatum prior to overt behavioral phenotypes stages. Remarkably, a significant proportion (36%) of the aberrantly spliced isoforms are not-functional and meant to non-sense mediated decay (NMD). The expanded Htt CAG repeats further reflect on a previously neglected, global impairment of back-splicing, leading to decreased circular RNAs production in neural progenitors. Integrative transcriptomic analyses unveil a network of transcriptionally altered micro-RNAs and RNA-binding proteins (Celf, hnRNPs, Ptbp, Srsf, Upf1, Ythd2) which might influence the AS machinery, primarily in neural cells. We suggest that this unbalanced expression of linear and circular RNAs might alter neural fitness, contributing to HD pathogenesis. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 1553-7390 1553-7404 |
| Relation: | https://journals.plos.org/plosgenetics/article/file?id=10.1371/journal.pgen.1010988&type=printable; https://doaj.org/toc/1553-7390; https://doaj.org/toc/1553-7404 |
| DOI: | 10.1371/journal.pgen.1010988&type=printable |
| DOI: | 10.1371/journal.pgen.1010988 |
| Access URL: | https://doaj.org/article/87731a943eda4263b60cff414dc33cfe |
| Accession Number: | edsdoj.87731a943eda4263b60cff414dc33cfe |
| Database: | Directory of Open Access Journals |
| Full text is not displayed to guests. | Login for full access. |
| ISSN: | 15537390 15537404 |
|---|---|
| DOI: | 10.1371/journal.pgen.1010988&type=printable |
| Published in: | PLoS Genetics |
| Language: | English |