Fiche publication
Date publication
novembre 2024
Journal
Nature communications
Auteurs
Membres identifiés du Cancéropôle Est :
Pr THAUVIN-ROBINET Christel
,
Pr KUENTZ Paul
Tous les auteurs :
Zanetti A, Dujardin G, Fares-Taie L, Amiel J, Roger JE, Audo I, Robert MP, David P, Jung V, Goudin N, Guerrera IC, Moriceau S, Amana D, Assia Batzir N, Bachar-Zipori A, Basel Salmon L, Boddaert N, Briault S, Bruel AL, Costet-Fighiera C, Coutinho Santos L, Gitiaux C, Kaminska K, Kuentz P, Orenstein N, Philip-Sarles N, Plutino M, Quinodoz M, Santos C, Sigaudy S, Soeiro E Sá M, Sofrin E, Sousa AB, Sousa-Luis R, Thauvin-Robinet C, van Dijk EL, Zaafrane-Khachnaoui K, Zur D, Kaplan J, Rivolta C, Rozet JM, Perrault I
Lien Pubmed
Résumé
Here we conduct a study involving 12 individuals with retinal dystrophy, neurological impairment, and skeletal abnormalities, with special focus on GPATCH11, a lesser-known G-patch domain-containing protein, regulator of RNA metabolism. To elucidate its role, we study fibroblasts from unaffected individuals and patients carrying the recurring c.328+1 G > T mutation, which specifically removes the main part of the G-patch domain while preserving the other domains. Additionally, we generate a mouse model replicating the patients' phenotypic defects, including retinal dystrophy and behavioral abnormalities. Our results reveal a subcellular localization of GPATCH11 characterized by a diffuse presence in the nucleoplasm, as well as centrosomal localization, suggesting potential functions in RNA and cilia metabolism. Transcriptomic analysis performed on mouse retina detect dysregulation in both gene expression and splicing activity, impacting key processes such as photoreceptor light responses, RNA regulation, and primary cilia-associated metabolism. Proteomic analysis of mouse retina confirms the roles GPATCH11 plays in RNA processing, splicing, and transcription regulation, while also suggesting additional functions in synaptic plasticity and nuclear stress response. Our research provides insights into the diverse roles of GPATCH11 and identifies that the mutations affecting this protein are responsible for a recently characterized described syndrome.
Mots clés
Animals, Humans, Retinal Dystrophies, genetics, Mice, RNA Splicing, genetics, Retina, metabolism, Male, Female, Mutation, Fibroblasts, metabolism, Disease Models, Animal, Mice, Inbred C57BL
Référence
Nat Commun. 2024 11 21;15(1):10096
