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Campoy-Campos G, Solana-Balaguer J, Guisado-Corcoll A, Chicote-González A, Garcia-Segura P, Pérez-Sisqués L, Torres AG, Canal M, Molina-Porcel L, Fernández-Irigoyen J, Santamaria E, de Pouplana LR, Alberch J, Martí E, Giralt A, Pérez-Navarro E, Malagelada C. RTP801 interacts with the tRNA ligase complex and dysregulates its RNA ligase activity in Alzheimer's disease. Nucleic Acids Res 2024:gkae776. [PMID: 39268577 DOI: 10.1093/nar/gkae776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 08/21/2024] [Accepted: 08/27/2024] [Indexed: 09/17/2024] Open
Abstract
RTP801/REDD1 is a stress-responsive protein overexpressed in neurodegenerative diseases such as Alzheimer's disease (AD) that contributes to cognitive deficits and neuroinflammation. Here, we found that RTP801 interacts with HSPC117, DDX1 and CGI-99, three members of the tRNA ligase complex (tRNA-LC), which ligates the excised exons of intron-containing tRNAs and the mRNA exons of the transcription factor XBP1 during the unfolded protein response (UPR). We also found that RTP801 modulates the mRNA ligase activity of the complex in vitro since RTP801 knockdown promoted XBP1 splicing and the expression of its transcriptional target, SEC24D. Conversely, RTP801 overexpression inhibited the splicing of XBP1. Similarly, in human AD postmortem hippocampal samples, where RTP801 is upregulated, we found that XBP1 splicing was dramatically decreased. In the 5xFAD mouse model of AD, silencing RTP801 expression in hippocampal neurons promoted Xbp1 splicing and prevented the accumulation of intron-containing pre-tRNAs. Finally, the tRNA-enriched fraction obtained from 5xFAD mice promoted abnormal dendritic arborization in cultured hippocampal neurons, and RTP801 silencing in the source neurons prevented this phenotype. Altogether, these results show that elevated RTP801 impairs RNA processing in vitro and in vivo in the context of AD and suggest that RTP801 inhibition could be a promising therapeutic approach.
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Affiliation(s)
- Genís Campoy-Campos
- Departament de Biomedicina, Institut de Neurociències, Universitat de Barcelona, Barcelona 08036, Catalonia, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid 28029, Spain
| | - Julia Solana-Balaguer
- Departament de Biomedicina, Institut de Neurociències, Universitat de Barcelona, Barcelona 08036, Catalonia, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid 28029, Spain
| | - Anna Guisado-Corcoll
- Departament de Biomedicina, Institut de Neurociències, Universitat de Barcelona, Barcelona 08036, Catalonia, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid 28029, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona 08036 Catalonia, Spain
| | - Almudena Chicote-González
- Departament de Biomedicina, Institut de Neurociències, Universitat de Barcelona, Barcelona 08036, Catalonia, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid 28029, Spain
| | - Pol Garcia-Segura
- Departament de Biomedicina, Institut de Neurociències, Universitat de Barcelona, Barcelona 08036, Catalonia, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid 28029, Spain
| | - Leticia Pérez-Sisqués
- Departament de Biomedicina, Institut de Neurociències, Universitat de Barcelona, Barcelona 08036, Catalonia, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid 28029, Spain
| | - Adrian Gabriel Torres
- Institut de Recerca Biomèdica (IRB Barcelona), Barcelona 08028, Catalonia, Spain
- Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Catalonia, Spain
| | - Mercè Canal
- Departament de Biomedicina, Institut de Neurociències, Universitat de Barcelona, Barcelona 08036, Catalonia, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid 28029, Spain
| | - Laura Molina-Porcel
- Alzheimer's Disease and Other Cognitive Disorders Unit, Neurology Service, Hospital Clínic, Fundació de Recerca Clínic Barcelona-Institut d'Investigacions Biomèdiques August Pi i Sunyer (FRCB-IDIBAPS), University of Barcelona, Barcelona 08036, Catalonia, Spain
- Neurological Tissue Bank, Biobank-Hospital Clínic-FRCB-IDIBAPS, Barcelona 08036, Catalonia, Spain
| | - Joaquín Fernández-Irigoyen
- Proteored-ISCIII, Proteomics Unit, Navarrabiomed, Departamento de Salud, UPNA, IdiSNA, Pamplona 31008, Spain
| | - Enrique Santamaria
- Proteored-ISCIII, Proteomics Unit, Navarrabiomed, Departamento de Salud, UPNA, IdiSNA, Pamplona 31008, Spain
| | - Lluís Ribas de Pouplana
- Institut de Recerca Biomèdica (IRB Barcelona), Barcelona 08028, Catalonia, Spain
- Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Catalonia, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona 08010, Catalonia, Spain
| | - Jordi Alberch
- Departament de Biomedicina, Institut de Neurociències, Universitat de Barcelona, Barcelona 08036, Catalonia, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid 28029, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona 08036 Catalonia, Spain
- Faculty of Medicine and Health Science, Production and Validation Center of Advanced Therapies (Creatio), Universitat de Barcelona, Barcelona 08036, Catalonia, Spain
| | - Eulàlia Martí
- Departament de Biomedicina, Institut de Neurociències, Universitat de Barcelona, Barcelona 08036, Catalonia, Spain
| | - Albert Giralt
- Departament de Biomedicina, Institut de Neurociències, Universitat de Barcelona, Barcelona 08036, Catalonia, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid 28029, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona 08036 Catalonia, Spain
- Faculty of Medicine and Health Science, Production and Validation Center of Advanced Therapies (Creatio), Universitat de Barcelona, Barcelona 08036, Catalonia, Spain
| | - Esther Pérez-Navarro
- Departament de Biomedicina, Institut de Neurociències, Universitat de Barcelona, Barcelona 08036, Catalonia, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid 28029, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona 08036 Catalonia, Spain
| | - Cristina Malagelada
- Departament de Biomedicina, Institut de Neurociències, Universitat de Barcelona, Barcelona 08036, Catalonia, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid 28029, Spain
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Liu W, Liu T, Zhao Q, Ma J, Jiang J, Shi H. Adipose Tissue-Derived Extracellular Vesicles: A Promising Biomarker and Therapeutic Strategy for Metabolic Disorders. Stem Cells Int 2023; 2023:9517826. [PMID: 38169960 PMCID: PMC10761228 DOI: 10.1155/2023/9517826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/23/2023] [Accepted: 11/25/2023] [Indexed: 01/05/2024] Open
Abstract
Adipose tissue plays an important role in systemic energy metabolism, and its dysfunction can lead to severe metabolic disorders. Various cells in adipose tissue communicate with each other to maintain metabolic homeostasis. Extracellular vesicles (EVs) are recognized as novel medium for remote intercellular communication by transferring various bioactive molecules from parental cells to distant target cells. Increasing evidence suggests that the endocrine functions of adipose tissue and even the metabolic homeostasis are largely affected by different cell-derived EVs, such as insulin signaling, lipolysis, and metabolically triggered inflammation regulations. Here, we provide an overview focused on the role of EVs released by different cell types of adipose tissue in metabolic diseases and their possible molecular mechanisms and highlight the potential applications of EVs as biomarkers and therapeutic targets. Moreover, the current EVs-based therapeutic strategies have also been discussed. This trial is registered with NCT05475418.
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Affiliation(s)
- Wenhui Liu
- Aoyang Institute of Cancer, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Zhangjiagang, Suzhou 215600, Jiangsu, China
- Zhenjiang Key Laboratory of High Technology Research on sEVs Foundation and Transformation Application, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu, China
| | - Tianyan Liu
- Center of Laboratory Medicine, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Zhangjiagang, Suzhou 215600, Jiangsu, China
| | - Qingyu Zhao
- Department of Nephrology, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Zhangjiagang, Suzhou 215600, Jiangsu, China
| | - Junqiu Ma
- Aoyang Institute of Cancer, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Zhangjiagang, Suzhou 215600, Jiangsu, China
- Center of Laboratory Medicine, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Zhangjiagang, Suzhou 215600, Jiangsu, China
| | - Jiajia Jiang
- Aoyang Institute of Cancer, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Zhangjiagang, Suzhou 215600, Jiangsu, China
- Center of Laboratory Medicine, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Zhangjiagang, Suzhou 215600, Jiangsu, China
| | - Hui Shi
- Aoyang Institute of Cancer, Affiliated Aoyang Hospital of Jiangsu University, 279 Jingang Road, Zhangjiagang, Suzhou 215600, Jiangsu, China
- Zhenjiang Key Laboratory of High Technology Research on sEVs Foundation and Transformation Application, School of Medicine, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu, China
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