Characterization of HNRNPA1 mutations defines diversity in pathogenic mechanisms and clinical presentation
| العنوان: | Characterization of HNRNPA1 mutations defines diversity in pathogenic mechanisms and clinical presentation |
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| المؤلفون: | Inès Mademan, Lauren E. Drake, James Shorter, Kevin J. O'Donovan, Alice Flynn Ford, Andrzej Kochański, Matthew T. Wheeler, Kristof Van Schil, Nicolas Dubuisson, Richard J.L.F. Lemmers, Silvère M. van der Maarel, Jonathan Baets, Devon Bonner, J. Paul Taylor, Peter De Jonghe, Tine Deconinck, Jacinda B. Sampson, Charlotte M. Fare, Anahit Mehrabyan, Peter Van den Bergh, Nicol C. Voermans, Dagmara Kabzińska, Lin Guo, Steven Palmer, Danique Beijer, Hong Joo Kim |
| المساهمون: | UCL - (SLuc) Service de neurologie, UCL - SSS/IREC/EDIN - Pôle d'endocrinologie, diabète et nutrition, UCL - (SLuc) Centre de référence neuromusculaire |
| المصدر: | Jci Insight, 6, 14 JCI Insight, 6(14). AMER SOC CLINICAL INVESTIGATION INC JCI Insight JCI insight, Vol. 6, no.14, p. 1-18 (2021) Jci Insight, 6 JCI insight |
| بيانات النشر: | AMER SOC CLINICAL INVESTIGATION INC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Adult, Male, Heterozygote, TIA1, Heterogeneous nuclear ribonucleoprotein, Adolescent, Heterogeneous Nuclear Ribonucleoprotein A1, DNA Mutational Analysis, Biology, Whole Exome Sequencing, Muscular Atrophy, Spinal, Young Adult, Stress granule, All institutes and research themes of the Radboud University Medical Center, Exome Sequencing, medicine, Genetics, Humans, Amyotrophic lateral sclerosis, Child, Genetic Association Studies, Amyotrophic Lateral Sclerosis, RNA, Translation (biology), General Medicine, Middle Aged, medicine.disease, Cell stress, Disorders of movement Donders Center for Medical Neuroscience [Radboudumc 3], Phenotype, Stress Granules, Cell biology, Pedigree, Chemistry, RNA splicing, Mutation, Female, Human medicine, Neurological disorders, Research Article, Neuroscience |
| الوصف: | Mutations in HNRNPA1 encoding heterogeneous nuclear ribonucleoprotein (hnRNP) A1 are a rare cause of amyotrophic lateral sclerosis (ALS) and multisystem proteinopathy (MSP). hnRNPA1 is part of the group of RNA-binding proteins (RBPs) that assemble with RNA to form RNPs. hnRNPs are concentrated in the nucleus and function in pre-mRNA splicing, mRNA stability, and the regulation of transcription and translation. During stress, hnRNPs, mRNA, and other RBPs condense in the cytoplasm to form stress granules (SGs). SGs are implicated in the pathogenesis of (neuro-)degenerative diseases, including ALS and inclusion body myopathy (IBM). Mutations in RBPs that affect SG biology, including FUS, TDP-43, hnRNPA1, hnRNPA2B1, and TIA1, underlie ALS, IBM, and other neurodegenerative diseases. Here, we characterize 4 potentially novel HNRNPA1 mutations (yielding 3 protein variants: *321Eext*6, *321Qext*6, and G304Nfs*3) and 2 known HNRNPA1 mutations (P288A and D262V), previously connected to ALS and MSP, in a broad spectrum of patients with hereditary motor neuropathy, ALS, and myopathy. We establish that the mutations can have different effects on hnRNPA1 fibrillization, liquid-liquid phase separation, and SG dynamics. P288A accelerated fibrillization and decelerated SG disassembly, whereas *321Eext*6 had no effect on fibrillization but decelerated SG disassembly. By contrast, G304Nfs*3 decelerated fibrillization and impaired liquid phase separation. Our findings suggest different underlying pathomechanisms for HNRNPA1 mutations with a possible link to clinical phenotypes. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2379-3708 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f44f7da41fba7d5d08ec3934beb42a6Test https://hdl.handle.net/1887/3214438Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....7f44f7da41fba7d5d08ec3934beb42a6 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 23793708 |
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