論文 - 詳細
| RRC ID | 71759 |
|---|---|
| 著者 | Gleixner AM, Verdone BM, Otte CG, Anderson EN, Ramesh N, Shapiro OR, Gale JR, Mauna JC, Mann JR, Copley KE, Daley EL, Ortega JA, Cicardi ME, Kiskinis E, Kofler J, Pandey UB, Trotti D, Donnelly CJ. |
| タイトル | NUP62 localizes to ALS/FTLD pathological assemblies and contributes to TDP-43 insolubility. |
| ジャーナル | Nat Commun |
| Abstract |
A G4C2 hexanucleotide repeat expansion in the C9orf72 gene is the most common genetic cause of ALS and FTLD (C9-ALS/FTLD) with cytoplasmic TDP-43 inclusions observed in regions of neurodegeneration. The accumulation of repetitive RNAs and dipeptide repeat protein (DPR) are two proposed mechanisms of toxicity in C9-ALS/FTLD and linked to impaired nucleocytoplasmic transport. Nucleocytoplasmic transport is regulated by the phenylalanine-glycine nucleoporins (FG nups) that comprise the nuclear pore complex (NPC) permeability barrier. However, the relationship between FG nups and TDP-43 pathology remains elusive. Our studies show that nuclear depletion and cytoplasmic mislocalization of one FG nup, NUP62, is linked to TDP-43 mislocalization in C9-ALS/FTLD iPSC neurons. Poly-glycine arginine (GR) DPR accumulation initiates the formation of cytoplasmic RNA granules that recruit NUP62 and TDP-43. Cytoplasmic NUP62 and TDP-43 interactions promotes their insolubility and NUP62:TDP-43 inclusions are frequently found in C9orf72 ALS/FTLD as well as sporadic ALS/FTLD postmortem CNS tissue. Our findings indicate NUP62 cytoplasmic mislocalization contributes to TDP-43 proteinopathy in ALS/FTLD. |
| 巻・号 | 13(1) |
| ページ | 3380 |
| 公開日 | 2022-6-13 |
| DOI | 10.1038/s41467-022-31098-6 |
| PII | 10.1038/s41467-022-31098-6 |
| PMID | 35697676 |
| PMC | PMC9192689 |
| MeSH | Amyotrophic Lateral Sclerosis* / metabolism C9orf72 Protein / genetics DNA Repeat Expansion DNA-Binding Proteins / genetics DNA-Binding Proteins / metabolism Dipeptides / metabolism Frontotemporal Lobar Degeneration* / metabolism Glycine / genetics Humans |
| IF | 12.121 |
| リソース情報 | |
| 実験動物マウス | RBRC01828 |