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Pal A, Grossmann D, Glaß H, Zimyanin V, Günther R, Catinozzi M, Boeckers TM, Sterneckert J, Storkebaum E, Petri S, Wegner F, Grill SW, Pan-Montojo F, Hermann A. Glycolic acid and D-lactate-putative products of DJ-1-restore neurodegeneration in FUS - and SOD1-ALS. Life Sci Alliance 2024; 7:e202302535. [PMID: 38760174 DOI: 10.26508/lsa.202302535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 05/05/2024] [Accepted: 05/07/2024] [Indexed: 05/19/2024] Open
Abstract
Amyotrophic lateral sclerosis (ALS) leads to death within 2-5 yr. Currently, available drugs only slightly prolong survival. We present novel insights into the pathophysiology of Superoxide Dismutase 1 (SOD1)- and in particular Fused In Sarcoma (FUS)-ALS by revealing a supposedly central role of glycolic acid (GA) and D-lactic acid (DL)-both putative products of the Parkinson's disease associated glyoxylase DJ-1. Combined, not single, treatment with GA/DL restored axonal organelle phenotypes of mitochondria and lysosomes in FUS- and SOD1-ALS patient-derived motoneurons (MNs). This was not only accompanied by restoration of mitochondrial membrane potential but even dependent on it. Despite presenting an axonal transport deficiency as well, TDP43 patient-derived MNs did not share mitochondrial depolarization and did not respond to GA/DL treatment. GA and DL also restored cytoplasmic mislocalization of FUS and FUS recruitment to DNA damage sites, recently reported being upstream of the mitochondrial phenotypes in FUS-ALS. Whereas these data point towards the necessity of individualized (gene-) specific therapy stratification, it also suggests common therapeutic targets across different neurodegenerative diseases characterized by mitochondrial depolarization.
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Affiliation(s)
- Arun Pal
- Division for Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | - Dajana Grossmann
- Translational Neurodegeneration Section "Albrecht Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Hannes Glaß
- Translational Neurodegeneration Section "Albrecht Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Vitaly Zimyanin
- Division for Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
- https://ror.org/0153tk833 Department of Molecular Physiology and Biological Physics, University of Virginia, School of Medicine, Charlottesville, VA, USA
- https://ror.org/0153tk833 Center for Membrane and Cell Physiology, University of Virginia, School of Medicine, Charlottesville, VA, USA
| | - René Günther
- Division for Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Dresden, Germany
| | - Marica Catinozzi
- Donders Institute for Brain, Cognition and Behaviour and Faculty of Science, Radboud University, Nijmegen, Netherlands
| | - Tobias M Boeckers
- Institute for Anatomy and Cell Biology, Ulm University, as well as Deutsches Zentrum für Neurodegenerative Erkrankungen, Ulm, Germany
| | - Jared Sterneckert
- Center for Regenerative Therapies Dresden, Technische Universität Dresden as well as Medical Faculty Carl Gustav Carus of TU Dresden, Dresden, Germany
| | - Erik Storkebaum
- Donders Institute for Brain, Cognition and Behaviour and Faculty of Science, Radboud University, Nijmegen, Netherlands
| | - Susanne Petri
- Department of Neurology, Hannover Medical School, Hannover, Germany
| | - Florian Wegner
- Department of Neurology, Hannover Medical School, Hannover, Germany
| | - Stephan W Grill
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
- Cluster of Excellence Physics of Life, Technische Universität Dresden, Dresden, Germany
| | - Francisco Pan-Montojo
- Department of Psychiatrie and Psychotherapy, LMU University Hospital, LMU Munich, Munich, Germany
| | - Andreas Hermann
- Translational Neurodegeneration Section "Albrecht Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE) Rostock/Greifswald, Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, Rostock, Germany
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Wang Y, Li Z, Li J, Sun C. LncRNA NEAT1 promotes MPP+ induced injury of PC12 cells and accelerates the progression of Parkinson's disease in mice through FUS mediated inhibition of PI3K/AKT/mTOR signalling pathway. Exp Gerontol 2024; 191:112436. [PMID: 38636570 DOI: 10.1016/j.exger.2024.112436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/08/2024] [Accepted: 04/15/2024] [Indexed: 04/20/2024]
Abstract
Long noncoding RNA nuclear-enriched abundant transcript 1 (NEAT1) is involved in the progression of Parkinson's disease (PD), but the specific regulatory role needs further exploration. This study showed that the expression of NEAT1 was upregulated in the cerebrospinal fluid (CSF) and peripheral blood of patients with different stages of PD. 1-Methyl-4-phenylpyridine (MPP)-treated PC 12 cells were transfected with si-NEAT1, and MPP treatment promoted cell apoptosis, oxidative stress and inflammatory factor secretion. Si-NEAT1 reversed the effects of MPP. NEAT1 silencing eliminated the effect of MPP on the protein expression levels of LC3-II and p62/SQSTM1. By using an online bioinformatics database, Fused in Sarcoma (FUS) was confirmed to be an RNA binding protein of NEAT1, and it was highly expressed in the CSF and peripheral blood of patients with PD. Si-FUS was transfected into MPP-treated PC 12 cells to detect cell apoptosis, oxidative stress, inflammatory factor secretion and autophagy, and the results were the same as those of transfection of si-NEAT1. Furthermore, MPP treatment reduced the phosphorylation levels of PI3K, Akt and mTOR, whereas si-FUS reversed the effects of MPP. In vivo, compared with the model group, the PD mice showed reduced NEAT1 and FUS expression levels and activated PI3K pathway after being injected with si-NEAT1. The brain tissue of NEAT1-silenced PD mice had decreased inflammatory infiltration and apoptosis and increased neurological scores. In conclusion, NEAT1 is involved in PD progression through FUS-mediated inhibition of the PI3K/AKT/mTOR signalling pathway.
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Affiliation(s)
- Yonghui Wang
- Second Department of Neurology, Qingzhou People's Hospital, Weifang 262500, Shandong, China
| | - Zhuo Li
- Two Departments of Brain Disease, Yantai Penglai Traditional Chinese Medicine Hospital, Yantai 264000, Shandong, China
| | - Jiwen Li
- Department of Neurosurgery, Jinan Zhangqiu District People's Hospital, Jinan 250200, Shandong, China
| | - Chao Sun
- Department of Neurology, Yantaishan Hospital, Yantai 264000, Shandong, China.
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3
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Zhong P, Wei S, Xiao H, Zeng Y. Rhabdomyosarcoma With FUS::TFCP2 Fusion in the Mandible: A Rare Aggressive Subtype, but Can Be Misdiagnosed as Ossifying Fibroma. Int J Surg Pathol 2024; 32:758-766. [PMID: 37545350 DOI: 10.1177/10668969231189172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Rhabdomyosarcoma (RMS) with TFCP2 rearrangement has been identified recently. This entity has a distinctive clinicopathologic features: a rapidly aggressive clinical course, a preference for the craniofacial bones, a spindle and epithelioid histomorphology, and positive immunohistochemistry for epithelial markers, ALK, and myogenic markers. RMS with TFCP2 rearrangement is rare and may be misdiagnosed as other spindle cell tumors. Here, we report a case of this entity arising in the mandible, which was initially diagnosed as ossifying fibroma in primary tumor in another hospital. A 26-year-old man presented with a recurred mass in the mandible for 1 month after the operation of mandibular tumor. The first excisional specimen was initially diagnosed as ossifying fibroma in another hospital. Histopathologic examination revealed the tumor with a hybrid spindle cell and epithelioid cytomorphology, spindle cells and spindle-to-epithelioid cells with eosinophilic and rich cytoplasm, with high-grade features, prominent nucleoli and some atypical mitosis. Immunohistochemical analysis revealed positivity for desmin, MYOD1, pan-keratin, ALK (5A4), ALK (D5F3). Based on the morphology and immunophenotype, molecular studies were performed, which revealed a FUS::TFCP2 fusion transcript, confirming the diagnosis of Rhabdomyosarcoma with FUS::TFCP2 fusion. Making a correct diagnosis is primarily dependent on awareness by the pathologist of this rare subtype of RMS and careful histopathological evaluation, supported by immunohistochemical and molecular analysis, to avoid potential diagnostic pitfalls.
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Affiliation(s)
- Peng Zhong
- Department of Pathology, Daping Hospital, Amy Medical University (Third Military Medical University), Chongqing, China
| | - Shirong Wei
- Department of Pathology, Daping Hospital, Amy Medical University (Third Military Medical University), Chongqing, China
| | - Hualiang Xiao
- Department of Pathology, Daping Hospital, Amy Medical University (Third Military Medical University), Chongqing, China
| | - Ying Zeng
- Department of Pathology, Chongqing General Hospital, Chongqing, China
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Shibayama T, Hayashi A, Nagahama K, Hibiya T, Shibuya H, Kobayashi Y, Shibahara J. Ovarian Sex Cord Tumor Harboring FUS::CREM Fusion : An Ovarian Counterpart of Inflammatory and Nested Testicular Sex Cord Tumor? Am J Surg Pathol 2024; 48:773-775. [PMID: 38223985 DOI: 10.1097/pas.0000000000002180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Affiliation(s)
| | | | | | | | - Hiromi Shibuya
- Department of Obstetrics and Gynecology, Faculty of Medicine, Kyorin University, Tokyo, Japan
| | - Yoichi Kobayashi
- Department of Obstetrics and Gynecology, Faculty of Medicine, Kyorin University, Tokyo, Japan
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Ulbright TM, Acosta AM. In Response to Ovarian Sex Cord Tumor Harboring FUS::CREM Fusion: An Ovarian Counterpart of Inflammatory and Nested Testicular Sex Cord Tumor. Am J Surg Pathol 2024; 48:775-776. [PMID: 38584332 DOI: 10.1097/pas.0000000000002221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Affiliation(s)
- Thomas M Ulbright
- Department of Pathology and Laboratory Medicine, Indiana University School of Medicine and Indiana University Health Partners, Indianapolis, IN
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Chen Y, Pei X, Chen L, Chen L. A dynamic regulatory switch for phase separation of FUS protein: Zinc ions and zinc finger domain. Biochem Biophys Res Commun 2024; 710:149862. [PMID: 38593618 DOI: 10.1016/j.bbrc.2024.149862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 03/17/2024] [Accepted: 03/28/2024] [Indexed: 04/11/2024]
Abstract
Zinc is an important trace element in the human body, and its homeostasis is closely related to amyotrophic lateral sclerosis (ALS). Cytoplasmic FUS proteins from patients with ALS aggregate their important pathologic markers. Liquid-liquid phase separation (LLPS) of FUS can lead to its aggregation. However, whether and how zinc homeostasis affects the aggregation of disease-associated FUS proteins in the cytoplasm remains unclear. Here, we found that zinc ion enhances LLPS and promotes the aggregation in the cytoplasm for FUS protein. In the FUS, the cysteine of the zinc finger (ZnF), recognizes and binds to zinc ions, reducing droplet mobility and enhancing protein aggregation in the cytoplasm. The mutation of FUS cysteine disrupts the dynamic regulatory switch of zinc ions and ZnF, resulting in insensitivity to zinc ions. These results suggest that the dynamic regulation of LLPS by binding with zinc ions may be a widespread mechanism and provide a new understanding of neurological diseases such as ALS and other ZnF protein-related diseases.
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Affiliation(s)
- Yatao Chen
- Department of Biochemistry, School of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Xiaoying Pei
- Department of Biochemistry, School of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Long Chen
- Department of Biochemistry, School of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Liming Chen
- Department of Biochemistry, School of Life Sciences, Nanjing Normal University, Nanjing, China; Cancer Institute, School of Life Sciences, Nanjing Normal University, Nanjing, China.
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Orsucci D, Tessa A, Caldarazzo Ienco E, Trovato R, Natale G, Bilancieri G, Giuntini M, Napolitano A, Salvetti S, Vista M, Santorelli FM. Clinical and genetic features of dominant Essential Tremor in Tuscany, Italy: FUS, CAMTA1, ATXN1 and beyond. J Neurol Sci 2024; 460:123012. [PMID: 38626532 DOI: 10.1016/j.jns.2024.123012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 04/07/2024] [Accepted: 04/09/2024] [Indexed: 04/18/2024]
Abstract
OBJECTIVE Essential Tremor (ET) is one of the most common neurological disorders. In most instances ET is inherited as an autosomal dominant trait with age-related penetrance (virtually complete in advanced age); however, ET genetics remains elusive. The current study aims to identify possibly pathogenic genetic variants in a group of well-characterized ET families. METHODS 34 individuals from 14 families with dominant ET were clinically evaluated and studied by whole exome sequencing studies (after excluding trinucleotide expansion disorders). RESULTS Most patients had pure ET. In 4 families, exome studies could identify a genetic variant potentially able to significantly alter the protein structure (CADD >20, REVEL score > 0.25), shared by all the affected individuals (in CAMTA1, FUS, MYH14, SGCE genes). In another family there were two variants in dominant genes (PCDH9 and SQSTM1). Moreover, an interrupted "intermediate" trinucleotide expansion in ATXN1 ("SCA1") was identified in a further family with pure ET. CONCLUSION Combining our observations together with earlier reports, we can conclude that ET genes confirmed in at least two families to date include CAMTA1 and FUS (reported here), as well as CACNA1G, NOTCH2NLC and TENM4. Most cases of familial ET, inherited with an autosomal dominant inheritance, may result from "mild" variants of many different genes that, when affected by more harmful genetic variants, lead to more severe neurological syndromes (still autosomal dominant). Thus, ET phenotype may be the "mild", incomplete manifestation of many other dominant neurogenetic diseases. These findings further support evidence of genetic heterogeneity for such disease(s). Author's keywords: cerebellar ataxias, movement disorders, neurogenetics, rare neurological disorders, tremor.
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Affiliation(s)
- D Orsucci
- Unit of Neurology, San Luca Hospital, Lucca, Italy.
| | - A Tessa
- IRCCS Stella Maris Foundation, Calambrone, Pisa, Italy
| | | | - R Trovato
- IRCCS Stella Maris Foundation, Calambrone, Pisa, Italy
| | - G Natale
- IRCCS Stella Maris Foundation, Calambrone, Pisa, Italy
| | - G Bilancieri
- IRCCS Stella Maris Foundation, Calambrone, Pisa, Italy
| | - M Giuntini
- Unit of Neurology, San Luca Hospital, Lucca, Italy
| | - A Napolitano
- Unit of Neurology, Apuane Hospital, Massa Carrara, Italy
| | - S Salvetti
- Unit of Neurology, San Luca Hospital, Lucca, Italy
| | - M Vista
- Unit of Neurology, San Luca Hospital, Lucca, Italy
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Zhang L, Yang L, Du K. Exosomal HSPB1, interacting with FUS protein, suppresses hypoxia-induced ferroptosis in pancreatic cancer by stabilizing Nrf2 mRNA and repressing P450. J Cell Mol Med 2024; 28:e18209. [PMID: 38682349 PMCID: PMC11056849 DOI: 10.1111/jcmm.18209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 01/20/2024] [Accepted: 02/14/2024] [Indexed: 05/01/2024] Open
Abstract
Ferroptosis is a new type of programmed cell death, which has been involved in the progression of tumours. However, the regulatory network of ferroptosis in pancreatic cancer is still largely unknown. Here, using datasets from GEO and TCGA, we screened HSPB1, related to the P450 monooxygenase signalling, a fuel of ferroptosis, to be a candidate gene for regulating pancreatic cancer cell ferroptosis. We found that HSPB1 was enriched in the exosomes derived from human pancreatic cancer cell lines SW1990 and Panc-1. Then, hypoxic SW1990 cells were incubated with exosomes alone or together with HSPB1 siRNA (si-HSPB1), and we observed that exosomes promoted cell proliferation and invasion and suppressed ferroptosis, which was reversed by si-HSPB1. Moreover, we found a potential binding affinity between HSPB1 and FUS, verified their protein interaction by using dual-colour fluorescence colocalization and co-IP assays, and demonstrated the promoting effect of FUS on oxidative stress and ferroptosis in hypoxic SW1990 cells. Subsequently, FUS was demonstrated to bind with and stabilize the mRNA of Nrf2, a famous anti-ferroptosis gene that negatively regulates the level of P450. Furthermore, overexpressing FUS and activating the Nrf2/HO-1 pathway (using NK-252) both reversed the inhibitory effect of si-HSPB1 on exosome functions. Finally, our in vivo studies showed that exosome administration promote tumour growth in nude mice of xenotransplantation, which was able to be eliminated by knockdown of HSPB1. In conclusion, exosomal HSPB1 interacts with the RNA binding protein FUS and decreases FUS-mediated stability of Nrf2 mRNA, thus suppressing hypoxia-induced ferroptosis in pancreatic cancer.
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Affiliation(s)
- Lun Zhang
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of Xi'an Jiaotong UniversityXi'anShaanxiP.R. China
| | - Liuxu Yang
- Health Science CenterXi'an Jiaotong UniversityXi'anShaanxiP.R. China
| | - Keyuan Du
- Health Science CenterXi'an Jiaotong UniversityXi'anShaanxiP.R. China
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Ranji P, Jonasson E, Andersson L, Filges S, Luna Santamaría M, Vannas C, Dolatabadi S, Gustafsson A, Myklebost O, Håkansson J, Fagman H, Landberg G, Åman P, Ståhlberg A. Deciphering the role of FUS::DDIT3 expression and tumor microenvironment in myxoid liposarcoma development. J Transl Med 2024; 22:389. [PMID: 38671504 PMCID: PMC11046918 DOI: 10.1186/s12967-024-05211-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND Myxoid liposarcoma (MLS) displays a distinctive tumor microenvironment and is characterized by the FUS::DDIT3 fusion oncogene, however, the precise functional contributions of these two elements remain enigmatic in tumor development. METHODS To study the cell-free microenvironment in MLS, we developed an experimental model system based on decellularized patient-derived xenograft tumors. We characterized the cell-free scaffold using mass spectrometry. Subsequently, scaffolds were repopulated using sarcoma cells with or without FUS::DDIT3 expression that were analyzed with histology and RNA sequencing. RESULTS Characterization of cell-free MLS scaffolds revealed intact structure and a large variation of protein types remaining after decellularization. We demonstrated an optimal culture time of 3 weeks and showed that FUS::DDIT3 expression decreased cell proliferation and scaffold invasiveness. The cell-free MLS microenvironment and FUS::DDIT3 expression both induced biological processes related to cell-to-cell and cell-to-extracellular matrix interactions, as well as chromatin remodeling, immune response, and metabolism. Data indicated that FUS::DDIT3 expression more than the microenvironment determined the pre-adipocytic phenotype that is typical for MLS. CONCLUSIONS Our experimental approach opens new means to study the tumor microenvironment in detail and our findings suggest that FUS::DDIT3-expressing tumor cells can create their own extracellular niche.
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Affiliation(s)
- Parmida Ranji
- Sahlgrenska Center for Cancer Research, Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Emma Jonasson
- Sahlgrenska Center for Cancer Research, Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Lisa Andersson
- Sahlgrenska Center for Cancer Research, Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Stefan Filges
- Sahlgrenska Center for Cancer Research, Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Manuel Luna Santamaría
- Sahlgrenska Center for Cancer Research, Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Christoffer Vannas
- Sahlgrenska Center for Cancer Research, Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- Department of Oncology, Region Västra Götaland, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Soheila Dolatabadi
- Sahlgrenska Center for Cancer Research, Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Anna Gustafsson
- Sahlgrenska Center for Cancer Research, Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Ola Myklebost
- Department of Tumor Biology, Oslo University Hospital, Oslo, Norway
- Institute for Clinical Science, University of Bergen, Bergen, Norway
| | - Joakim Håkansson
- RISE Unit of Biological Function, Division Materials and Production, RISE Research Institutes of Sweden, Borås, Sweden
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- Department of Chemistry and Molecular Biology, Faculty of Science at University of Gothenburg, Gothenburg, Sweden
| | - Henrik Fagman
- Sahlgrenska Center for Cancer Research, Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- Department of Clinical Pathology, Region Västra Götaland, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Göran Landberg
- Sahlgrenska Center for Cancer Research, Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- Department of Clinical Pathology, Region Västra Götaland, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Pierre Åman
- Sahlgrenska Center for Cancer Research, Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Anders Ståhlberg
- Sahlgrenska Center for Cancer Research, Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.
- Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden.
- Department of Clinical Genetics and Genomics, Region Västra Götaland, Sahlgrenska University Hospital, Gothenburg, Sweden.
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Shiramasa Y, Yamamoto R, Kashiwagi N, Sasaki F, Imai S, Ike M, Kitazawa S, Kameda T, Kitahara R. An aberrant fused in sarcoma liquid droplet of amyotrophic lateral sclerosis pathological variant, R495X, accelerates liquid-solid phase transition. Sci Rep 2024; 14:8914. [PMID: 38632300 PMCID: PMC11024109 DOI: 10.1038/s41598-024-59604-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 04/12/2024] [Indexed: 04/19/2024] Open
Abstract
Intracellular aggregation of fused in sarcoma (FUS) is associated with the pathogenesis of familial amyotrophic lateral sclerosis (ALS). Under stress, FUS forms liquid droplets via liquid-liquid phase separation (LLPS). Two types of wild-type FUS LLPS exist in equilibrium: low-pressure LLPS (LP-LLPS) and high-pressure LLPS (HP-LLPS); the former dominates below 2 kbar and the latter over 2 kbar. Although several disease-type FUS variants have been identified, the molecular mechanism underlying accelerated cytoplasmic granule formation in ALS patients remains poorly understood. Herein, we report the reversible formation of the two LLPS states and the irreversible liquid-solid transition, namely droplet aging, of the ALS patient-type FUS variant R495X using fluorescence microscopy and ultraviolet-visible absorption spectroscopy combined with perturbations in pressure and temperature. Liquid-to-solid phase transition was accelerated in the HP-LLPS of R495X than in the wild-type variant; arginine slowed the aging of droplets at atmospheric conditions by inhibiting the formation of HP-LLPS more selectively compared to that of LP-LLPS. Our findings provide new insight into the mechanism by which R495X readily forms cytoplasmic aggregates. Targeting the aberrantly formed liquid droplets (the HP-LLPS state) of proteins with minimal impact on physiological functions could be a novel therapeutic strategy for LLPS-mediated protein diseases.
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Affiliation(s)
- Yutaro Shiramasa
- Graduate School of Pharmacy, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Ryu Yamamoto
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Norika Kashiwagi
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Fuka Sasaki
- Graduate School of Pharmacy, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Sawaka Imai
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Mikihito Ike
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Soichiro Kitazawa
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan
| | - Tomoshi Kameda
- Artificial Intelligence Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 2-3-26, Aomi, Koto-ku, Tokyo, 135-0064, Japan
| | - Ryo Kitahara
- Graduate School of Pharmacy, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan.
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan.
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Milani M, Della Valle I, Rossi S, Fabbrizio P, Margotta C, Nardo G, Cozzolino M, D'Ambrosi N, Apolloni S. Neuroprotective effects of niclosamide on disease progression via inflammatory pathways modulation in SOD1-G93A and FUS-associated amyotrophic lateral sclerosis models. Neurotherapeutics 2024; 21:e00346. [PMID: 38493058 PMCID: PMC11070272 DOI: 10.1016/j.neurot.2024.e00346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 02/28/2024] [Accepted: 03/06/2024] [Indexed: 03/18/2024] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a complex neurodegenerative disease influenced by genetic, epigenetic, and environmental factors, resulting in dysfunction in cellular and molecular pathways. The limited efficacy of current treatments highlights the need for combination therapies targeting multiple aspects of the disease. Niclosamide, an anthelminthic drug listed as an essential medicine, has been repurposed in clinical trials for different diseases due to its anti-inflammatory and anti-fibrotic properties. Niclosamide can inhibit various molecular pathways (e.g., STAT3, mTOR) that are dysregulated in ALS, suggesting its potential to disrupt these altered mechanisms associated with the pathology. We administered niclosamide intraperitoneally to two transgenic murine models, SOD1-G93A and FUS mice, mimicking key pathological processes of ALS. The treatment was initiated at the onset of symptoms, and we assessed disease progression by neurological scores, rotarod and wire tests, and monitored survival. Furthermore, we investigated cellular and molecular mechanisms affected by niclosamide in the spinal cord and muscle of ALS mice. In both models, the administration of niclosamide resulted in a slowdown of disease progression, an increase in survival rates, and an improvement in tissue pathology. This was characterised by reduced gliosis, motor neuron loss, muscle atrophy, and inflammatory pathways. Based on these results, our findings demonstrate that niclosamide can impact multiple pathways involved in ALS. This multi-targeted approach leads to a slowdown in the progression of the disease, positioning niclosamide as a promising candidate for repurposing in the treatment of ALS.
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Affiliation(s)
- Martina Milani
- Department of Biology, University of Rome Tor Vergata, 00133 Rome, Italy; Program in Cellular and Molecular Biology, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Ilaria Della Valle
- Department of Biology, University of Rome Tor Vergata, 00133 Rome, Italy; Program in Cellular and Molecular Biology, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Simona Rossi
- Institute of Translational Pharmacology, CNR, 00133 Rome, Italy
| | - Paola Fabbrizio
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milan, Italy
| | - Cassandra Margotta
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milan, Italy
| | - Giovanni Nardo
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milan, Italy
| | - Mauro Cozzolino
- Institute of Translational Pharmacology, CNR, 00133 Rome, Italy
| | - Nadia D'Ambrosi
- Department of Biology, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Savina Apolloni
- Department of Biology, University of Rome Tor Vergata, 00133 Rome, Italy; UniCamillus-Saint Camillus International University of Health Sciences, Rome, Italy.
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12
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Chen X, Luo J, Zheng W, Huang Q, Du C, Yuan H, Xiao F. Hyperhidrosis as the initial symptom in FUS mutation-associated amyotrophic lateral sclerosis: a case report and comprehensive literature review. Neurol Sci 2024; 45:1523-1527. [PMID: 37904013 DOI: 10.1007/s10072-023-07141-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/02/2023] [Indexed: 11/01/2023]
Abstract
BACKGROUND Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease that is now recognized to involve autonomic dysfunction. The burden of autonomic dysfunction is an important factor in the quality of life and prognosis of ALS patients. This article presents the clinical characteristics of a young female ALS patient with a fused in sarcoma (FUS) gene mutation and notable hyperhidrosis. METHOD Detailed clinical characteristics of the patients were collected, and comprehensive examinations such as electrophysiological assessment, neuro-ultrasound, genetic testing, and relevant blood tests were conducted. RESULT A 24-year-old female experienced progressive weakness in both lower limbs for over 5 months, along with excessive sweating on both palms and feet. A positive skin iodine-starch test was observed. Electromyography revealed extensive neurogenic damage and prolonged sympathetic skin response (SSR) latency in both lower limbs. Full exon gene sequencing showed a heterozygous mutation c.1574C>T (p.Pro525Leu) in the FUS gene. CONCLUSION The pathogenesis of ALS remains unclear at present. This case underscores the presence of autonomic nervous symptoms in ALS associated with FUS mutation and highlights the importance of early diagnosis and timely treatment intervention to enhance patient prognosis.
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Affiliation(s)
- Xuan Chen
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China
| | - Jing Luo
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China.
| | - Wei Zheng
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China
| | - Qinlian Huang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China
| | - Chao Du
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China
| | - Huan Yuan
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China
| | - Fei Xiao
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China.
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13
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Chiusa M, Lee YA, Zhang MZ, Harris RC, Sherrill T, Lindner V, Brooks CR, Yu G, Fogo AB, Flynn CR, Zienkiewicz J, Hawiger J, Zent R, Pozzi A. Cytoplasmic retention of the DNA/RNA-binding protein FUS ameliorates organ fibrosis in mice. J Clin Invest 2024; 134:e175158. [PMID: 38488009 PMCID: PMC10940094 DOI: 10.1172/jci175158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 01/17/2024] [Indexed: 03/18/2024] Open
Abstract
Uncontrolled accumulation of extracellular matrix leads to tissue fibrosis and loss of organ function. We previously demonstrated in vitro that the DNA/RNA-binding protein fused in sarcoma (FUS) promotes fibrotic responses by translocating to the nucleus, where it initiates collagen gene transcription. However, it is still not known whether FUS is profibrotic in vivo and whether preventing its nuclear translocation might inhibit development of fibrosis following injury. We now demonstrate that levels of nuclear FUS are significantly increased in mouse models of kidney and liver fibrosis. To evaluate the direct role of FUS nuclear translocation in fibrosis, we used mice that carry a mutation in the FUS nuclear localization sequence (FUSR521G) and the cell-penetrating peptide CP-FUS-NLS that we previously showed inhibits FUS nuclear translocation in vitro. We provide evidence that FUSR521G mice or CP-FUS-NLS-treated mice showed reduced nuclear FUS and fibrosis following injury. Finally, differential gene expression analysis and immunohistochemistry of tissues from individuals with focal segmental glomerulosclerosis or nonalcoholic steatohepatitis revealed significant upregulation of FUS and/or collagen genes and FUS protein nuclear localization in diseased organs. These results demonstrate that injury-induced nuclear translocation of FUS contributes to fibrosis and highlight CP-FUS-NLS as a promising therapeutic option for organ fibrosis.
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Affiliation(s)
- Manuel Chiusa
- Department of Medicine, Division of Nephrology and Hypertension, and
| | - Youngmin A. Lee
- Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Ming-Zhi Zhang
- Department of Medicine, Division of Nephrology and Hypertension, and
| | - Raymond C. Harris
- Department of Medicine, Division of Nephrology and Hypertension, and
- Department of Veterans Affairs, Nashville, Tennessee, USA
| | - Taylor Sherrill
- Department of Medicine, Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Volkhard Lindner
- Center for Molecular Medicine, Maine Health Institute for Research, Scarborough, Maine, USA
| | - Craig R. Brooks
- Department of Medicine, Division of Nephrology and Hypertension, and
| | - Gang Yu
- Department of Neuroscience, Peter O’Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Agnes B. Fogo
- Department of Medicine, Division of Nephrology and Hypertension, and
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Charles R. Flynn
- Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Jozef Zienkiewicz
- Department of Veterans Affairs, Nashville, Tennessee, USA
- Department of Medicine, Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Jacek Hawiger
- Department of Veterans Affairs, Nashville, Tennessee, USA
- Department of Medicine, Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Roy Zent
- Department of Medicine, Division of Nephrology and Hypertension, and
- Department of Veterans Affairs, Nashville, Tennessee, USA
| | - Ambra Pozzi
- Department of Medicine, Division of Nephrology and Hypertension, and
- Department of Veterans Affairs, Nashville, Tennessee, USA
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14
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Kodavati M, Wang H, Guo W, Mitra J, Hegde PM, Provasek V, Rao VHM, Vedula I, Zhang A, Mitra S, Tomkinson AE, Hamilton DJ, Van Den Bosch L, Hegde ML. FUS unveiled in mitochondrial DNA repair and targeted ligase-1 expression rescues repair-defects in FUS-linked motor neuron disease. Nat Commun 2024; 15:2156. [PMID: 38461154 PMCID: PMC10925063 DOI: 10.1038/s41467-024-45978-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 02/08/2024] [Indexed: 03/11/2024] Open
Abstract
This study establishes the physiological role of Fused in Sarcoma (FUS) in mitochondrial DNA (mtDNA) repair and highlights its implications to the pathogenesis of FUS-associated neurodegenerative diseases such as amyotrophic lateral sclerosis (ALS). Endogenous FUS interacts with and recruits mtDNA Ligase IIIα (mtLig3) to DNA damage sites within mitochondria, a relationship essential for maintaining mtDNA repair and integrity in healthy cells. Using ALS patient-derived FUS mutant cell lines, a transgenic mouse model, and human autopsy samples, we discovered that compromised FUS functionality hinders mtLig3's repair role, resulting in increased mtDNA damage and mutations. These alterations cause various manifestations of mitochondrial dysfunction, particularly under stress conditions relevant to disease pathology. Importantly, rectifying FUS mutations in patient-derived induced pluripotent cells (iPSCs) preserves mtDNA integrity. Similarly, targeted introduction of human DNA Ligase 1 restores repair mechanisms and mitochondrial activity in FUS mutant cells, suggesting a potential therapeutic approach. Our findings unveil FUS's critical role in mitochondrial health and mtDNA repair, offering valuable insights into the mechanisms underlying mitochondrial dysfunction in FUS-associated motor neuron disease.
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Affiliation(s)
- Manohar Kodavati
- Division of DNA Repair Research within the Center for Neuroregeneration, Department of Neurosurgery, Houston Methodist Research Institute, Houston, TX, USA
| | - Haibo Wang
- Division of DNA Repair Research within the Center for Neuroregeneration, Department of Neurosurgery, Houston Methodist Research Institute, Houston, TX, USA
| | - Wenting Guo
- KU Leuven-Department of Neurosciences, Experimental Neurology and Leuven Brain Institute (LBI), Leuven, Belgium
- Stem Cell Institute, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
- INSERM, UMR-S1118, Mécanismes Centraux et Périphériques de la Neurodégénérescence, Université de Strasbourg, CRBS, Strasbourg, France
| | - Joy Mitra
- Division of DNA Repair Research within the Center for Neuroregeneration, Department of Neurosurgery, Houston Methodist Research Institute, Houston, TX, USA
| | - Pavana M Hegde
- Division of DNA Repair Research within the Center for Neuroregeneration, Department of Neurosurgery, Houston Methodist Research Institute, Houston, TX, USA
| | - Vincent Provasek
- Division of DNA Repair Research within the Center for Neuroregeneration, Department of Neurosurgery, Houston Methodist Research Institute, Houston, TX, USA
- College of Medicine, Texas A&M University, College Station, TX, USA
| | - Vikas H Maloji Rao
- Division of DNA Repair Research within the Center for Neuroregeneration, Department of Neurosurgery, Houston Methodist Research Institute, Houston, TX, USA
| | - Indira Vedula
- Center for Bioenergetics, Houston Methodist Research Institute, Houston, TX, USA
| | - Aijun Zhang
- Center for Bioenergetics, Houston Methodist Research Institute, Houston, TX, USA
- Department of Medicine, Houston Methodist, Weill Cornell Medicine affiliate, Houston, TX, USA
| | - Sankar Mitra
- Division of DNA Repair Research within the Center for Neuroregeneration, Department of Neurosurgery, Houston Methodist Research Institute, Houston, TX, USA
| | - Alan E Tomkinson
- Departments of Internal Medicine, and Molecular Genetics and Microbiology and University of New Mexico Comprehensive Cancer Center, University of New Mexico, Albuquerque, NM, USA
| | - Dale J Hamilton
- Center for Bioenergetics, Houston Methodist Research Institute, Houston, TX, USA
- Department of Medicine, Houston Methodist, Weill Cornell Medicine affiliate, Houston, TX, USA
| | - Ludo Van Den Bosch
- KU Leuven-Department of Neurosciences, Experimental Neurology and Leuven Brain Institute (LBI), Leuven, Belgium
- VIB, Center for Brain & Disease Research, Laboratory of Neurobiology, Leuven, Belgium
| | - Muralidhar L Hegde
- Division of DNA Repair Research within the Center for Neuroregeneration, Department of Neurosurgery, Houston Methodist Research Institute, Houston, TX, USA.
- Department of Neuroscience, Weill Cornell Medical College, New York, NY, USA.
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15
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Thirumalai D, Kumar A, Chakraborty D, Straub JE, Mugnai ML. Conformational fluctuations and phases in fused in sarcoma (FUS) low-complexity domain. Biopolymers 2024; 115:e23558. [PMID: 37399327 PMCID: PMC10831756 DOI: 10.1002/bip.23558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/30/2023] [Accepted: 06/15/2023] [Indexed: 07/05/2023]
Abstract
The well-known phenomenon of phase separation in synthetic polymers and proteins has become a major topic in biophysics because it has been invoked as a mechanism of compartment formation in cells, without the need for membranes. Most of the coacervates (or condensates) are composed of Intrinsically Disordered Proteins (IDPs) or regions that are structureless, often in interaction with RNA and DNA. One of the more intriguing IDPs is the 526-residue RNA-binding protein, Fused in Sarcoma (FUS), whose monomer conformations and condensates exhibit unusual behavior that are sensitive to solution conditions. By focussing principally on the N-terminus low-complexity domain (FUS-LC comprising residues 1-214) and other truncations, we rationalize the findings of solid-state NMR experiments, which show that FUS-LC adopts a non-polymorphic fibril structure (core-1) involving residues 39-95, flanked by fuzzy coats on both the N- and C-terminal ends. An alternate structure (core-2), whose free energy is comparable to core-1, emerges only in the truncated construct (residues 110-214). Both core-1 and core-2 fibrils are stabilized by a Tyrosine ladder as well as hydrophilic interactions. The morphologies (gels, fibrils, and glass-like) adopted by FUS seem to vary greatly, depending on the experimental conditions. The effect of phosphorylation is site-specific. Simulations show that phosphorylation of residues within the fibril has a greater destabilization effect than residues that are outside the fibril region, which accords well with experiments. Many of the peculiarities associated with FUS may also be shared by other IDPs, such as TDP43 and hnRNPA2. We outline a number of problems for which there is no clear molecular explanation.
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Affiliation(s)
- D Thirumalai
- Department of Chemistry, The University of Texas at Austin, Austin, Texas, USA
- Department of Physics, The University of Texas at Austin, Austin, Texas, USA
| | - Abhinaw Kumar
- Department of Chemistry, The University of Texas at Austin, Austin, Texas, USA
| | - Debayan Chakraborty
- Department of Chemistry, The University of Texas at Austin, Austin, Texas, USA
| | - John E Straub
- Department of Chemistry, Boston University, Boston, Massachusetts, USA
| | - Mauro L Mugnai
- Institute for Soft Matter Synthesis and Metrology, Georgetown University, Washington, DC, USA
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16
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Demongin C, Tranier S, Joshi V, Ceschi L, Desforges B, Pastré D, Hamon L. RNA and the RNA-binding protein FUS act in concert to prevent TDP-43 spatial segregation. J Biol Chem 2024; 300:105716. [PMID: 38311174 PMCID: PMC10912363 DOI: 10.1016/j.jbc.2024.105716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 01/15/2024] [Accepted: 01/19/2024] [Indexed: 02/10/2024] Open
Abstract
FUS and TDP-43 are two self-adhesive aggregation-prone mRNA-binding proteins whose pathological mutations have been linked to neurodegeneration. While TDP-43 and FUS form reversible mRNA-rich compartments in the nucleus, pathological mutations promote their respective cytoplasmic aggregation in neurons with no apparent link between the two proteins except their intertwined function in mRNA processing. By combining analyses in cellular context and at high resolution in vitro, we unraveled that TDP-43 is specifically recruited in FUS assemblies to form TDP-43-rich subcompartments but without reciprocity. The presence of mRNA provides an additional scaffold to promote the mixing between TDP-43 and FUS. Accordingly, we also found that the pathological truncated form of TDP-43, TDP-25, which has an impaired RNA-binding ability, no longer mixes with FUS. Together, these results suggest that the binding of FUS along nascent mRNAs enables TDP-43, which is highly aggregation-prone, to mix with FUS phase to form mRNA-rich subcompartments. A functional link between FUS and TDP-43 may explain their common implication in amyotrophic lateral sclerosis.
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Affiliation(s)
- Clément Demongin
- SABNP, Univ Evry, INSERM, U1204, Université Paris-Saclay, Evry, France
| | - Samuel Tranier
- Institut de Pharmacologie et de Biologie Structurale, IPBS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Vandana Joshi
- SABNP, Univ Evry, INSERM, U1204, Université Paris-Saclay, Evry, France
| | - Léa Ceschi
- SABNP, Univ Evry, INSERM, U1204, Université Paris-Saclay, Evry, France
| | | | - David Pastré
- SABNP, Univ Evry, INSERM, U1204, Université Paris-Saclay, Evry, France
| | - Loic Hamon
- SABNP, Univ Evry, INSERM, U1204, Université Paris-Saclay, Evry, France.
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17
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Honda H, Yagita K, Arahata H, Hamasaki H, Noguchi H, Koyama S, Sasagasako N. Increased expression of human antiviral protein MxA in FUS proteinopathy in amyotrophic lateral sclerosis. Brain Pathol 2024; 34:e13191. [PMID: 37586842 PMCID: PMC10901610 DOI: 10.1111/bpa.13191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 06/06/2023] [Indexed: 08/18/2023] Open
Abstract
FUS mutations are one of the major mutations in familial amyotrophic lateral sclerosis (ALS). The pathological hallmark is FUS-positive neuronal cytoplasmic inclusions (FUS-NCI), known as FUS proteinopathy. Human myxovirus resistance protein 1 (MxA) is an IFN-induced dynamin-like GTPase that acts as antiviral factor. In this study, we examined the expression of MxA in neurons bearing FUS-NCI. We performed immunohistochemistry for FUS and MxA to examine the expression of MxA in two autopsy cases with different FUS gene mutations localized at the nuclear localization signal site (Case 1, H517P; Case 2, R521C). MxA. Most neurons bearing FUS-NCI have increased cytoplasmic MxA expression. Increased cytoplasmic MxA showed several distribution patterns in relation to FUS-NCIs such as the following: colocalization with NCI, distribution more widely than NCI, and different distribution peaks from NCI. Our results suggested that antiviral signaling IFNs are involved upstream in the formation of FUS-NCI in ALS-FUS patients.
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Affiliation(s)
- Hiroyuki Honda
- Department of Neuropathology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
- Division of Neurology, Department of Neurology, Neuro Muscular CenterNational Hospital Organization, Omuta National HospitalFukuokaJapan
- Neuropathology CenterNational Hospital Organization, Omuta National HospitalFukuokaJapan
| | - Kaoru Yagita
- Department of Neuropathology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Hajime Arahata
- Division of Neurology, Department of Neurology, Neuro Muscular CenterNational Hospital Organization, Omuta National HospitalFukuokaJapan
| | - Hideomi Hamasaki
- Department of Neuropathology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Hideko Noguchi
- Department of Neuropathology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Sachiko Koyama
- Department of Neuropathology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Naokazu Sasagasako
- Division of Neurology, Department of Neurology, Neuro Muscular CenterNational Hospital Organization, Omuta National HospitalFukuokaJapan
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18
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Domi T, Schito P, Sferruzza G, Russo T, Pozzi L, Agosta F, Carrera P, Riva N, Filippi M, Quattrini A, Falzone YM. Unveiling the SOD1-mediated ALS phenotype: insights from a comprehensive meta-analysis. J Neurol 2024; 271:1342-1354. [PMID: 37930481 DOI: 10.1007/s00415-023-12074-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/18/2023] [Accepted: 10/18/2023] [Indexed: 11/07/2023]
Abstract
BACKGROUND AND OBJECTIVES Amyotrophic lateral sclerosis associated with mutations in SOD1 (SOD1-ALS) might be susceptible to specific treatment. The aim of the study is to outline the clinical features of SOD1-ALS patients by comparing them to patients without ALS major gene variants and patients with variants in other major ALS genes. Defining SOD1-ALS phenotype may assist clinicians in identifying patients who should be prioritized for genetic testing. METHODS We performed an extensive literature research including original studies which reported the clinical features of SOD1-ALS and at least one of the following patient groups: C9ORF72 hexanucleotide repeat expansion (C9-ALS), TARDBP (TARDBP-ALS), FUS (FUS-ALS) or patients without a positive test for a major-ALS gene (N-ALS). A random effects meta-analytic model was applied to clinical data extracted encompassing sex, site and age of onset. To reconstruct individual patient survival data, the published Kaplan-Meier curves were digitized. Data were measured as odds ratio (OR) or standardized mean difference (SMD) as appropriate. Median survival was compared between groups. RESULTS Twenty studies met the inclusion criteria. We identified 721 SOD1-ALS, 470 C9-ALS, 183 TARDBP-ALS, 113 FUS-ALS and 2824 N-ALS. SOD1-ALS showed a higher rate of spinal onset compared with N-ALS and C9-ALS (OR = 4.85, 95% CI = 3.04-7.76; OR = 10.47, 95% CI = 4.32-27.87) and an earlier onset compared with N-ALS (SMD = - 0.45, 95% CI = - 0.72 to - 0.18). SOD1-ALS had a similar survival compared with N-ALS (p = 0.14), a longer survival compared with C9-ALS (p < 0.01) and FUS-ALS (p = 0.019) and a shorter survival compared with TARDBP-ALS (p < 0.01). DISCUSSION This study indicates the presence of a specific SOD1-ALS phenotype. Insights in SOD1-ALS clinical features are important in genetic counseling, disease prognosis and support patients' stratification in clinical trials.
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Affiliation(s)
- Teuta Domi
- Experimental Neuropathology Unit, Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Paride Schito
- Experimental Neuropathology Unit, Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
- Neurology Unit, IRCCS San Raffaele Scientific Institute, Via Olgettina, 60, 20132, Milan, Italy
| | - Giacomo Sferruzza
- Neurology Unit, IRCCS San Raffaele Scientific Institute, Via Olgettina, 60, 20132, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
| | - Tommaso Russo
- Experimental Neuropathology Unit, Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
- Neurology Unit, IRCCS San Raffaele Scientific Institute, Via Olgettina, 60, 20132, Milan, Italy
| | - Laura Pozzi
- Experimental Neuropathology Unit, Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Federica Agosta
- Neurology Unit, IRCCS San Raffaele Scientific Institute, Via Olgettina, 60, 20132, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
- Neuroimaging Research Unit, Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Paola Carrera
- Unit of Genomics for Human Disease Diagnosis, Division of Genetics and Cell Biology, Laboratory of Clinical Molecular Biology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Nilo Riva
- 3rd Neurology Unit and Motor Neuron Disease Centre, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Massimo Filippi
- Neurology Unit, IRCCS San Raffaele Scientific Institute, Via Olgettina, 60, 20132, Milan, Italy.
- Vita-Salute San Raffaele University, Milan, Italy.
- Neuroimaging Research Unit, Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy.
- Neurorehabilitation Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy.
- Neurophysiology Service, IRCCS San Raffaele Scientific Institute, Milan, Italy.
| | - Angelo Quattrini
- Experimental Neuropathology Unit, Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Yuri Matteo Falzone
- Experimental Neuropathology Unit, Institute of Experimental Neurology (INSPE), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
- Neurology Unit, IRCCS San Raffaele Scientific Institute, Via Olgettina, 60, 20132, Milan, Italy
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19
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Tziortzouda P, Steyaert J, Scheveneels W, Sicart A, Stoklund Dittlau K, Barbosa Correia AM, Burg T, Pal A, Hermann A, Van Damme P, Moens TG, Van Den Bosch L. PP2A and GSK3 act as modifiers of FUS-ALS by modulating mitochondrial transport. Acta Neuropathol 2024; 147:41. [PMID: 38363426 PMCID: PMC10873455 DOI: 10.1007/s00401-024-02689-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 12/22/2023] [Accepted: 01/11/2024] [Indexed: 02/17/2024]
Abstract
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease which currently lacks effective treatments. Mutations in the RNA-binding protein FUS are a common cause of familial ALS, accounting for around 4% of the cases. Understanding the mechanisms by which mutant FUS becomes toxic to neurons can provide insight into the pathogenesis of both familial and sporadic ALS. We have previously observed that overexpression of wild-type or ALS-mutant FUS in Drosophila motor neurons is toxic, which allowed us to screen for novel genetic modifiers of the disease. Using a genome-wide screening approach, we identified Protein Phosphatase 2A (PP2A) and Glycogen Synthase Kinase 3 (GSK3) as novel modifiers of FUS-ALS. Loss of function or pharmacological inhibition of either protein rescued FUS-associated lethality in Drosophila. Consistent with a conserved role in disease pathogenesis, pharmacological inhibition of both proteins rescued disease-relevant phenotypes, including mitochondrial trafficking defects and neuromuscular junction failure, in patient iPSC-derived spinal motor neurons (iPSC-sMNs). In FUS-ALS flies, mice, and human iPSC-sMNs, we observed reduced GSK3 inhibitory phosphorylation, suggesting that FUS dysfunction results in GSK3 hyperactivity. Furthermore, we found that PP2A acts upstream of GSK3, affecting its inhibitory phosphorylation. GSK3 has previously been linked to kinesin-1 hyperphosphorylation. We observed this in both flies and iPSC-sMNs, and we rescued this hyperphosphorylation by inhibiting GSK3 or PP2A. Moreover, increasing the level of kinesin-1 expression in our Drosophila model strongly rescued toxicity, confirming the relevance of kinesin-1 hyperphosphorylation. Our data provide in vivo evidence that PP2A and GSK3 are disease modifiers, and reveal an unexplored mechanistic link between PP2A, GSK3, and kinesin-1, that may be central to the pathogenesis of FUS-ALS and sporadic forms of the disease.
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Affiliation(s)
- Paraskevi Tziortzouda
- Department of Neurosciences, Experimental Neurology and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, Leuven, Belgium
- Center for Brain & Disease Research, Laboratory of Neurobiology, VIB, Campus Gasthuisberg, O&N5, Herestraat 49, PB 602, 3000, Leuven, Belgium
| | - Jolien Steyaert
- Department of Neurosciences, Experimental Neurology and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, Leuven, Belgium
- Center for Brain & Disease Research, Laboratory of Neurobiology, VIB, Campus Gasthuisberg, O&N5, Herestraat 49, PB 602, 3000, Leuven, Belgium
| | - Wendy Scheveneels
- Department of Neurosciences, Experimental Neurology and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, Leuven, Belgium
- Center for Brain & Disease Research, Laboratory of Neurobiology, VIB, Campus Gasthuisberg, O&N5, Herestraat 49, PB 602, 3000, Leuven, Belgium
| | - Adria Sicart
- Department of Neurosciences, Experimental Neurology and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, Leuven, Belgium
- Center for Brain & Disease Research, Laboratory of Neurobiology, VIB, Campus Gasthuisberg, O&N5, Herestraat 49, PB 602, 3000, Leuven, Belgium
| | - Katarina Stoklund Dittlau
- Department of Neurosciences, Experimental Neurology and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, Leuven, Belgium
- Center for Brain & Disease Research, Laboratory of Neurobiology, VIB, Campus Gasthuisberg, O&N5, Herestraat 49, PB 602, 3000, Leuven, Belgium
| | - Adriana Margarida Barbosa Correia
- Department of Neurosciences, Experimental Neurology and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, Leuven, Belgium
- Center for Brain & Disease Research, Laboratory of Neurobiology, VIB, Campus Gasthuisberg, O&N5, Herestraat 49, PB 602, 3000, Leuven, Belgium
- Instituto Superior Técnico-Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
| | - Thibaut Burg
- Department of Neurosciences, Experimental Neurology and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, Leuven, Belgium
- Center for Brain & Disease Research, Laboratory of Neurobiology, VIB, Campus Gasthuisberg, O&N5, Herestraat 49, PB 602, 3000, Leuven, Belgium
| | - Arun Pal
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden Rossendorf, 01328, Dresden, Germany
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, 01307, Dresden, Germany
| | - Andreas Hermann
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, 01307, Dresden, Germany
- Translational Neurodegeneration Section "Albrecht Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, 18147, Rostock, Germany
- Deutsches Zentrum Fur Neurodegenerative Erkrankungen (DZNE) Rostock/Greifswald, 18147, Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, 18147, Rostock, Germany
| | - Philip Van Damme
- Department of Neurosciences, Experimental Neurology and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, Leuven, Belgium
- Center for Brain & Disease Research, Laboratory of Neurobiology, VIB, Campus Gasthuisberg, O&N5, Herestraat 49, PB 602, 3000, Leuven, Belgium
- Department of Neurology, University Hospitals Leuven, Leuven, Belgium
| | - Thomas G Moens
- Department of Neurosciences, Experimental Neurology and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, Leuven, Belgium.
- Center for Brain & Disease Research, Laboratory of Neurobiology, VIB, Campus Gasthuisberg, O&N5, Herestraat 49, PB 602, 3000, Leuven, Belgium.
| | - Ludo Van Den Bosch
- Department of Neurosciences, Experimental Neurology and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, Leuven, Belgium.
- Center for Brain & Disease Research, Laboratory of Neurobiology, VIB, Campus Gasthuisberg, O&N5, Herestraat 49, PB 602, 3000, Leuven, Belgium.
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20
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Shum C, Hedges EC, Allison J, Lee YB, Arias N, Cocks G, Chandran S, Ruepp MD, Shaw CE, Nishimura AL. Mutations in FUS lead to synaptic dysregulation in ALS-iPSC derived neurons. Stem Cell Reports 2024; 19:187-195. [PMID: 38242131 PMCID: PMC10874860 DOI: 10.1016/j.stemcr.2023.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 12/14/2023] [Accepted: 12/15/2023] [Indexed: 01/21/2024] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a fatal, adult-onset neurodegenerative disorder characterized by progressive muscular weakness due to the selective loss of motor neurons. Mutations in the gene Fused in Sarcoma (FUS) were identified as one cause of ALS. Here, we report that mutations in FUS lead to upregulation of synaptic proteins, increasing synaptic activity and abnormal release of vesicles at the synaptic cleft. Consequently, FUS-ALS neurons showed greater vulnerability to glutamate excitotoxicity, which raised neuronal swellings (varicose neurites) and led to neuronal death. Fragile X mental retardation protein (FMRP) is an RNA-binding protein known to regulate synaptic protein translation, and its expression is reduced in the FUS-ALS lines. Collectively, our data suggest that a reduction of FMRP levels alters the synaptic protein dynamics, leading to synaptic dysfunction and glutamate excitotoxicity. Here, we present a mechanistic hypothesis linking dysregulation of peripheral translation with synaptic vulnerability in the pathogenesis of FUS-ALS.
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Affiliation(s)
- Carole Shum
- United Kingdom Dementia Research Institute Centre, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 5 Cutcombe Rd, London SE5 9RT, UK; Genetics & Genome Biology Program, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada; The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada
| | - Erin C Hedges
- United Kingdom Dementia Research Institute Centre, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 5 Cutcombe Rd, London SE5 9RT, UK
| | - Joseph Allison
- United Kingdom Dementia Research Institute Centre, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 5 Cutcombe Rd, London SE5 9RT, UK
| | - Youn-Bok Lee
- United Kingdom Dementia Research Institute Centre, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 5 Cutcombe Rd, London SE5 9RT, UK
| | - Natalia Arias
- United Kingdom Dementia Research Institute Centre, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 5 Cutcombe Rd, London SE5 9RT, UK; Department of Psychology, Faculty of Life and Natural Sciences, Brain and Behavior Group, Nebrija University, Madrid, Spain
| | - Graham Cocks
- United Kingdom Dementia Research Institute Centre, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 5 Cutcombe Rd, London SE5 9RT, UK
| | - Siddharthan Chandran
- MRC Centre for Regenerative Medicine, Euan MacDonald Centre for MND Research and Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh EH16 4SB, UK
| | - Marc-David Ruepp
- United Kingdom Dementia Research Institute Centre, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 5 Cutcombe Rd, London SE5 9RT, UK
| | - Christopher E Shaw
- United Kingdom Dementia Research Institute Centre, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 5 Cutcombe Rd, London SE5 9RT, UK; Centre for Brain Research, University of Auckland, 85 Park Road, Grafton Auckland 1023, New Zealand.
| | - Agnes L Nishimura
- United Kingdom Dementia Research Institute Centre, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 5 Cutcombe Rd, London SE5 9RT, UK; Centre for Neuroscience, Surgery and Trauma, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK; Institute Paulo Gontijo, São Paulo, Brazil.
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21
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Tang M, Xiong M, Zhou W, Lei J, Huang M, Huang C, Wang F, Liu J, Li J, Xu X. Generation of a human induced pluripotent stem cell line (SMUSHi002-A) from an ALS patient carrying a heterozygous mutation c.1562G > A in the FUS gene. Stem Cell Res 2024; 74:103286. [PMID: 38141357 DOI: 10.1016/j.scr.2023.103286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 12/15/2023] [Indexed: 12/25/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease. Affected patients experience gradual loss of their spinal cord and cortical motor neurons with consequent muscle weakness and emaciation, and eventual respiratory failure. The pathogenesis of ALS remains largely unknown although the FUS (sarcoma fusion gene) gene is known to be one of the major pathogenic genes. We have generated an induced pluripotent stem cell line SMUSHi002-A from an ALS patient who carries a heterozygous mutation c.1562G > A in FUS. This cell line will serve as a useful model to investigate disease pathogenesis and develop potential therapeutic approaches for ALS.
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Affiliation(s)
- Mei Tang
- Department of Precision Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518100, PR China
| | - Min Xiong
- Department of Precision Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518100, PR China
| | - Wenyan Zhou
- Department of Precision Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518100, PR China
| | - Jiafan Lei
- Department of Precision Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518100, PR China
| | - Min Huang
- Department of Precision Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518100, PR China
| | - Chunyan Huang
- Department of Precision Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518100, PR China
| | - Fei Wang
- Department of Precision Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518100, PR China
| | - Jun Liu
- Department of Precision Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518100, PR China
| | - Jun Li
- Shenzhen Hospital,Southern Medical University, Shenzhen 518100, PR China
| | - Xueqing Xu
- Department of Precision Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518100, PR China.
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22
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Wang Z, She D, Liu L, Hua X, Zhu H, Yu L, Wang H, Zhu Y, Fan G, Wang Y, Xu M, Zhou G. Circular RNA CircSATB2 facilitates osteosarcoma progression through regulating the miR-661/FUS-mediated mRNA of ZNFX1. Cell Signal 2024; 114:110977. [PMID: 37984605 DOI: 10.1016/j.cellsig.2023.110977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 11/03/2023] [Accepted: 11/13/2023] [Indexed: 11/22/2023]
Abstract
Circular RNAs (circRNAs) are a class of non-coding RNAs which take part in the regulation of the initiation and development of different types of cancer. Numerous studies have demonstrated that circRNAs are involved in the progression of osteosarcoma (OS) as well. Thus, we put our emphasis on the exploration of crucial circRNAs in the process of OS initiation and progression. Using RNA sequencing, we found that circSATB2 was highly expressed in OS tissues compared with adjacent normal tissues. Then, we confirmed the high expression of circSATB2 in OS cell lines and OS tissues and its high expression was related to poor prognosis of OS patients. Functional experiments exhibited that circSATB2 promoted OS proliferation and migration in vitro, primary OS model and OS lung metastasis model showed that circSATB2 aggravated OS progression in vivo. Mechanistically, circSATB2 was found to promote OS progression through sponging miR-661 and FUS regulating the mRNA of ZNFX1. Therefore, circSATB2 could act as a prognostic marker and a therapeutic target for osteosarcoma in the future.
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Affiliation(s)
- Zhen Wang
- Department of Orthopaedics, Jinling Hospital, Nanjing University, Nanjing, China; Department of Orthopaedics, Jinling Hospital, Nanjing Medical University, Nanjing, China; Department of Orthopaedics, The General Hospital of Chinese People's Liberation Army, Beijing, China
| | - Diankun She
- Department of Orthopaedics, Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Lei Liu
- Department of Orthopedics,The Affiliated Yixing Hospital of Jiangsu University, Yixing, Jiangsu, China
| | - Xianming Hua
- Department of Orthopaedics, Jinling Hospital, Nanjing University, Nanjing, China
| | - Hao Zhu
- Department of Orthopaedics, Jinling Hospital, Nanjing University, Nanjing, China
| | - Lingfeng Yu
- Department of Orthopaedics, Jinling Hospital, Nanjing University, Nanjing, China
| | - Han Wang
- Department of Pharmacy, Jinling Hospital, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yan Zhu
- Department of Orthopaedics, Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Gentao Fan
- Department of Orthopaedics, Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Yicun Wang
- Department of Orthopaedics, Jinling Hospital, Nanjing University, Nanjing, China
| | - Meng Xu
- Department of Orthopaedics, The General Hospital of Chinese People's Liberation Army, Beijing, China.
| | - Guangxin Zhou
- Department of Orthopaedics, Jinling Hospital, Nanjing University, Nanjing, China; Department of Orthopaedics, Jinling Hospital, Nanjing Medical University, Nanjing, China.
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23
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Xiao X, Li M, Ye Z, He X, Wei J, Zha Y. FUS gene mutation in amyotrophic lateral sclerosis: a new case report and systematic review. Amyotroph Lateral Scler Frontotemporal Degener 2024; 25:1-15. [PMID: 37926865 DOI: 10.1080/21678421.2023.2272170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 10/08/2023] [Indexed: 11/07/2023]
Abstract
OBJECTIVE Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease associated with upper and lower motor neuron degeneration and necrosis, characterized by progressive muscle weakness, atrophy, and paralysis. The FUS mutation-associated ALS has been classified as ALS6. We reported a case of ALS6 with de novo mutation and investigated retrospectively the characteristics of cases with FUS mutation. METHODS We reported a male patient with a new heterozygous variant of the FUS gene and comprehensively reviewed 173 ALS cases with FUS mutation. The literature was reviewed from the PubMed MEDLINE electronic database (https://www.ncbi.nlm.nih.gov/pubmed) using "Amyotrophic Lateral Sclerosis and Fus mutation" or "Fus mutation" as key words from 1 January 2009 to 1 January 2022. RESULTS We report a case of ALS6 with a new mutation point (c.1225-1227delGGA) and comprehensively review 173 ALS cases with FUS mutation. Though ALS6 is all with FUS mutation, it is still a highly heterogenous subtype. The average onset age of ALS6 is 35.2 ± 1.3 years, which is much lower than the average onset age of ALS (60 years old). Juvenile FUS mutations have an aggressive progression of disease, with an average time from onset to death or tracheostomy of 18.2 ± 0.5 months. FUS gene has the characteristics of early onset, faster progress, and shorter survival, especially in deletion mutation p.G504Wfs *12 and missense mutation of p.P525L. CONCLUSIONS ALS6 is a highly heterogenous subtype. Our study could allow clinicians to better understand the non-ALS typical symptoms, phenotypes, and pathophysiology of ALS6.
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Affiliation(s)
- Xin Xiao
- Department of Neurology, Yichang Central Hospital, Institute of Neural Regeneration and Repair, College of Basic Medical Science, China Three Gorges University, Yichang, China and
| | - Min Li
- Department of Neurology, Yichang Central Hospital, Institute of Neural Regeneration and Repair, College of Basic Medical Science, China Three Gorges University, Yichang, China and
- Third-grade Pharmacological Laboratory on Traditional Chinese Medicine, State Administration of Traditional Chinese Medicine, China Three Gorges University, Yichang, China
| | - Zhi Ye
- Department of Neurology, Yichang Central Hospital, Institute of Neural Regeneration and Repair, College of Basic Medical Science, China Three Gorges University, Yichang, China and
| | - Xiaoyan He
- Department of Neurology, Yichang Central Hospital, Institute of Neural Regeneration and Repair, College of Basic Medical Science, China Three Gorges University, Yichang, China and
| | - Jun Wei
- Department of Neurology, Yichang Central Hospital, Institute of Neural Regeneration and Repair, College of Basic Medical Science, China Three Gorges University, Yichang, China and
| | - Yunhong Zha
- Department of Neurology, Yichang Central Hospital, Institute of Neural Regeneration and Repair, College of Basic Medical Science, China Three Gorges University, Yichang, China and
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24
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Li HL, Mo CH, Xie L, Wu YX, Zeng M, Mao RJ. [Clinicopathological study of epithelioid and spindle cell rhabdomysarcoma with EWSR1/FUS-TFCP2 fusion]. Zhonghua Bing Li Xue Za Zhi 2024; 53:58-63. [PMID: 38178748 DOI: 10.3760/cma.j.cn112151-20230925-00214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Objective: To investigate the clinicopathological and genetic features of epithelioid and spindle cell rhabdomysarcoma with EWSR1-TFCP2 or FUS-TFCP2 fusion. Methods: The clinical, morphological and immunohistochemical features of 14 cases of epithelioid and spindle cell rhabdomysarcoma with EWSR1-TFCP2 or FUS-TFCP2 fusion diagnosed from January 2019 to December 2022 in the Department of Pathology, Foshan Traditional Chinese Medicine Hospital, Foshan, China were retrospectively analyzed. The cases were all subject to FISH or next generation sequencing for analysis of molecular genetic features. The literature was reviewed. Results: There were 5 males and 9 females, with the age at presentation ranging from 6 to 36 years (mean, 22 years). Tumors occurred in the head and neck (9 cases), pelvic region (2 cases), bladder (one case), right humerus (one case), and the abdominal wall, humerus and pubic at the same time (one case). Presenting symptoms varied by location but often included pain or discomfort. Most of the patients showed aggressive radiographic features with soft tissue extension. The tumors had a median size of 6.6 cm (range, 2-23 cm). The tumors were poorly defined and irregularly shaped. Microscopic examination showed diffuse proliferation of spindle or epithelioid cells. While morphologically high-grade tumors displayed obvious cytological atypia, a high mitotic count and tumor necrosis, low-grade tumors grew in sheets and fascicles composed of spindle, epithelioid cells with moderate or abundant amounts of eosinophilic cytoplasm, without pronounced cytological atypia. The tumor cells expressed Desmin, MyoD1, and Myogenin, as well as ALK, EMA, and CKpan. EWSR1/FUS-TFCP2 gene fusion was detected in 14 cases with next generation sequencing and confirmed by FISH. Six cases had EWSR1-TFCP2 fusions and 8 cases showed FUS-TFCP2 fusions. Follow-up information was available in 13 patients, ranged from 5 to 37 months. At the end of follow-up period, 7 patients died of the disease. Six patients were alive:two cases had local recurrences and metastases, two cases of recurrences, one case of metastasis and one case without recurrences and metastasis. Conclusions: Epithelioid and spindle cell rhabdomysarcomas with EWSR1-TFCP2 or FUS-TFCP2 fusion show a very aggressive clinical course, and more commonly occur in the head and neck. Their genetic hallmark is the presence of EWSR1/FUS-TFCP2 fusions. Familiarity with its clinicopathological characteristics is helpful in avoiding misdiagnoses.
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Affiliation(s)
- H L Li
- Department of Pathology, Foshan Traditional Chinese Medicine Hospital, Foshan 528000, China
| | - C H Mo
- Department of Pathology, Foshan Traditional Chinese Medicine Hospital, Foshan 528000, China
| | - L Xie
- Department of Pathology, Foshan Traditional Chinese Medicine Hospital, Foshan 528000, China
| | - Y X Wu
- Department of Pathology, Foshan Traditional Chinese Medicine Hospital, Foshan 528000, China
| | - M Zeng
- Department of Pathology, Foshan Traditional Chinese Medicine Hospital, Foshan 528000, China
| | - R J Mao
- Department of Pathology, Foshan Traditional Chinese Medicine Hospital, Foshan 528000, China
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25
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Zhu Y, Burg T, Neyrinck K, Vervliet T, Nami F, Vervoort E, Ahuja K, Sassano ML, Chai YC, Tharkeshwar AK, De Smedt J, Hu H, Bultynck G, Agostinis P, Swinnen JV, Van Den Bosch L, da Costa RFM, Verfaillie C. Disruption of MAM integrity in mutant FUS oligodendroglial progenitors from hiPSCs. Acta Neuropathol 2024; 147:6. [PMID: 38170217 PMCID: PMC10764485 DOI: 10.1007/s00401-023-02666-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 01/05/2024]
Abstract
Amyotrophic lateral sclerosis (ALS) is a rapidly progressive and fatal neurodegenerative disorder, characterized by selective loss of motor neurons (MNs). A number of causative genetic mutations underlie the disease, including mutations in the fused in sarcoma (FUS) gene, which can lead to both juvenile and late-onset ALS. Although ALS results from MN death, there is evidence that dysfunctional glial cells, including oligodendroglia, contribute to neurodegeneration. Here, we used human induced pluripotent stem cells (hiPSCs) with a R521H or a P525L mutation in FUS and their isogenic controls to generate oligodendrocyte progenitor cells (OPCs) by inducing SOX10 expression from a TET-On SOX10 cassette. Mutant and control iPSCs differentiated efficiently into OPCs. RNA sequencing identified a myelin sheath-related phenotype in mutant OPCs. Lipidomic studies demonstrated defects in myelin-related lipids, with a reduction of glycerophospholipids in mutant OPCs. Interestingly, FUSR521H OPCs displayed a decrease in the phosphatidylcholine/phosphatidylethanolamine ratio, known to be associated with maintaining membrane integrity. A proximity ligation assay further indicated that mitochondria-associated endoplasmic reticulum membranes (MAM) were diminished in both mutant FUS OPCs. Moreover, both mutant FUS OPCs displayed increased susceptibility to ER stress when exposed to thapsigargin, and exhibited impaired mitochondrial respiration and reduced Ca2+ signaling from ER Ca2+ stores. Taken together, these results demonstrate a pathological role of mutant FUS in OPCs, causing defects in lipid metabolism associated with MAM disruption manifested by impaired mitochondrial metabolism with increased susceptibility to ER stress and with suppressed physiological Ca2+ signaling. As such, further exploration of the role of oligodendrocyte dysfunction in the demise of MNs is crucial and will provide new insights into the complex cellular mechanisms underlying ALS.
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Affiliation(s)
- Yingli Zhu
- Department of Development and Regeneration, Stem Cell Institute, KU Leuven, 3000, Leuven, Belgium.
| | - Thibaut Burg
- Department of Neurosciences, Experimental Neurology, KU Leuven, Leuven Brain Institute (LBI), 3000, Leuven, Belgium
- Laboratory of Neurobiology, VIB, Center for Brain and Disease Research, 3000, Leuven, Belgium
| | - Katrien Neyrinck
- Department of Development and Regeneration, Stem Cell Institute, KU Leuven, 3000, Leuven, Belgium
| | - Tim Vervliet
- Laboratory of Molecular and Cellular Signalling, Department of Cellular and Molecular Medicine, KU Leuven, 3000, Leuven, Belgium
| | - Fatemeharefeh Nami
- Department of Development and Regeneration, Stem Cell Institute, KU Leuven, 3000, Leuven, Belgium
| | - Ellen Vervoort
- Laboratory of Cell Death Research and Therapy, Department of Cellular and Molecular Medicine, KU Leuven, 3000, Leuven, Belgium
- Center for Cancer Biology, VIB, 3000, Leuven, Belgium
| | - Karan Ahuja
- Department of Development and Regeneration, Stem Cell Institute, KU Leuven, 3000, Leuven, Belgium
- Animal Physiology and Neurobiology Section, Department of Biology, Neural Circuit Development and Regeneration Research Group, 3000, Leuven, Belgium
| | - Maria Livia Sassano
- Laboratory of Cell Death Research and Therapy, Department of Cellular and Molecular Medicine, KU Leuven, 3000, Leuven, Belgium
- Center for Cancer Biology, VIB, 3000, Leuven, Belgium
| | - Yoke Chin Chai
- Department of Development and Regeneration, Stem Cell Institute, KU Leuven, 3000, Leuven, Belgium
| | - Arun Kumar Tharkeshwar
- Department of Neurosciences, Experimental Neurology, KU Leuven, Leuven Brain Institute (LBI), 3000, Leuven, Belgium
- Laboratory of Neurobiology, VIB, Center for Brain and Disease Research, 3000, Leuven, Belgium
| | - Jonathan De Smedt
- Department of Development and Regeneration, Stem Cell Institute, KU Leuven, 3000, Leuven, Belgium
| | - Haibo Hu
- National Engineering Research Center for Modernization of Traditional Chinese Medicine-Hakka Medical Resources Branch, School of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Geert Bultynck
- Laboratory of Molecular and Cellular Signalling, Department of Cellular and Molecular Medicine, KU Leuven, 3000, Leuven, Belgium
| | - Patrizia Agostinis
- Laboratory of Cell Death Research and Therapy, Department of Cellular and Molecular Medicine, KU Leuven, 3000, Leuven, Belgium
- Center for Cancer Biology, VIB, 3000, Leuven, Belgium
| | - Johannes V Swinnen
- Laboratory of Lipid Metabolism and Cancer, Department of Oncology, KU Leuven, 3000, Leuven, Belgium
| | - Ludo Van Den Bosch
- Department of Neurosciences, Experimental Neurology, KU Leuven, Leuven Brain Institute (LBI), 3000, Leuven, Belgium
- Laboratory of Neurobiology, VIB, Center for Brain and Disease Research, 3000, Leuven, Belgium
| | | | - Catherine Verfaillie
- Department of Development and Regeneration, Stem Cell Institute, KU Leuven, 3000, Leuven, Belgium
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26
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Wong CH, Rahat A, Chang HC. Fused in sarcoma regulates glutamate signaling and oxidative stress response. Free Radic Biol Med 2024; 210:172-182. [PMID: 38007141 PMCID: PMC10872661 DOI: 10.1016/j.freeradbiomed.2023.11.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 09/21/2023] [Accepted: 11/16/2023] [Indexed: 11/27/2023]
Abstract
Mutations in fused in sarcoma (fust-1) are linked to ALS. However, how these ALS causative mutations alter physiological processes and lead to the onset of ALS remains largely unknown. By obtaining humanized fust-1 ALS mutations via CRISPR-CAS9, we generated a C. elegans ALS model. Homozygous fust-1 ALS mutant and fust-1 deletion animals are viable in C. elegans. This allows us to better characterize the molecular mechanisms of fust-1-dependent responses. We found FUST-1 plays a role in regulating superoxide dismutase, glutamate signaling, and oxidative stress. FUST-1 suppresses SOD-1 and VGLUT/EAT-4 in the nervous system. FUST-1 also regulates synaptic AMPA-type glutamate receptor GLR-1. We found that fust-1 ALS mutations act as loss-of-function in SOD-1 and VGLUT/EAT-4 phenotypes, whereas the fust-1 ALS mutations act as gain-of-function in redox homeostasis and the microbe-induced oxidative stress response. We hypothesized that FUST-1 is a link between glutamate signaling and SOD-1. Our results may provide new insights into the human ALS alleles and their roles in pathological mechanisms that lead to ALS.
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Affiliation(s)
- Chiong-Hee Wong
- Department of Emergency Medicine, MacKay Memorial Hospital, Taipei, 104217, Taiwan
| | - Abu Rahat
- Integrative Neuroscience Program, SUNY Binghamton, Vestal, NY, 13850, USA
| | - Howard C Chang
- Department of Cell Biology and Neuroscience, School of Osteopathic Medicine, Rowan University, Stratford, NJ, 08084, USA.
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27
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Rezvykh A, Shteinberg D, Bronovitsky E, Ustyugov A, Funikov S. Animal Models of FUS-Proteinopathy: A Systematic Review. Biochemistry (Mosc) 2024; 89:S34-S56. [PMID: 38621743 DOI: 10.1134/s0006297924140037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/01/2023] [Accepted: 09/07/2023] [Indexed: 04/17/2024]
Abstract
Mutations that disrupt the function of the DNA/RNA-binding protein FUS could cause amyotrophic lateral sclerosis (ALS) and other neurodegenerative diseases. One of the key features in ALS pathogenesis is the formation of insoluble protein aggregates containing aberrant isoforms of the FUS protein in the cytoplasm of upper and lower motor neurons. Reproduction of human pathology in animal models is the main tool for studying FUS-associated pathology and searching for potential therapeutic agents for ALS treatment. In this review, we provide a systematic analysis of the role of FUS protein in ALS pathogenesis and an overview of the results of modelling FUS-proteinopathy in animals.
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Affiliation(s)
- Alexander Rezvykh
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Daniil Shteinberg
- Institute of Physiologically Active Compounds, Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Chernogolovka, 142432, Russia
| | | | - Aleksey Ustyugov
- Institute of Physiologically Active Compounds, Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Chernogolovka, 142432, Russia
| | - Sergei Funikov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia.
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28
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Assoni AF, Guerrero EN, Wardenaar R, Oliveira D, Bakker PL, Alves LM, Carvalho VM, Okamoto OK, Zatz M, Foijer F. IFNγ protects motor neurons from oxidative stress via enhanced global protein synthesis in FUS-associated amyotrophic lateral sclerosis. Brain Pathol 2024; 34:e13206. [PMID: 37582053 PMCID: PMC10711262 DOI: 10.1111/bpa.13206] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 07/12/2023] [Indexed: 08/17/2023] Open
Abstract
Amyotrophic lateral sclerosis type 6 (ALS6) is a familial subtype of ALS linked to Fused in Sarcoma (FUS) gene mutation. FUS mutations lead to decreased global protein synthesis, but the mechanism that drives this has not been established. Here, we used ALS6 patient-derived induced pluripotent stem cells (hIPSCs) to study the effect of the ALS6 FUSR521H mutation on the translation machinery in motor neurons (MNs). We find, in agreement with findings of others, that protein synthesis is decreased in FUSR521H MNs. Furthermore, FUSR521H MNs are more sensitive to oxidative stress and display reduced expression of TGF-β and mTORC gene pathways when stressed. Finally, we show that IFNγ treatment reduces apoptosis of FUSR521H MNs exposed to oxidative stress and partially restores the translation rates in FUSR521H MNs. Overall, these findings suggest that a functional IFNγ response is important for FUS-mediated protein synthesis, possibly by FUS nuclear translocation in ALS6.
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Affiliation(s)
- Amanda Faria Assoni
- European Research Institute for the Biology of Ageing (ERIBA)University of Groningen, University Medical Center GroningenGroningenThe Netherlands
- Instituto de BiociênciasUniversidade de São PauloSão PauloBrazil
| | - Erika N. Guerrero
- European Research Institute for the Biology of Ageing (ERIBA)University of Groningen, University Medical Center GroningenGroningenThe Netherlands
- Department of Stem Cell ResearchGorgas Memorial Institute for Health StudiesPanama CityRepublic of Panama
| | - René Wardenaar
- European Research Institute for the Biology of Ageing (ERIBA)University of Groningen, University Medical Center GroningenGroningenThe Netherlands
| | - Danyllo Oliveira
- Instituto de BiociênciasUniversidade de São PauloSão PauloBrazil
| | - Petra L. Bakker
- European Research Institute for the Biology of Ageing (ERIBA)University of Groningen, University Medical Center GroningenGroningenThe Netherlands
| | - Luciana M. Alves
- Instituto de BiociênciasUniversidade de São PauloSão PauloBrazil
| | | | | | - Mayana Zatz
- Instituto de BiociênciasUniversidade de São PauloSão PauloBrazil
| | - Floris Foijer
- European Research Institute for the Biology of Ageing (ERIBA)University of Groningen, University Medical Center GroningenGroningenThe Netherlands
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29
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Wang H, Zheng Y, Yu J, Meng L, Zhang W, Hong D, Wang Z, Yuan Y, Deng J. Pathologic changes in neuronal intranuclear inclusion disease are linked to aberrant FUS interaction under hyperosmotic stress. Neurobiol Dis 2024; 190:106391. [PMID: 38145851 DOI: 10.1016/j.nbd.2023.106391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/20/2023] [Accepted: 12/20/2023] [Indexed: 12/27/2023] Open
Abstract
CGG repeat expansion in NOTCH2NLC is the genetic cause of neuronal intranuclear inclusion disease (NIID). Previous studies indicated that the CGG repeats can be translated into polyglycine protein (N2CpolyG) which was toxic to neurons by forming intranuclear inclusions (IIs). However, little is known about the factors governing polyG IIs formation as well as its molecular pathogenesis. Considering that neurogenetic disorders usually involve interactions between genetic and environmental stresses, we investigated the effect of stress on the formation of IIs. Our results revealed that under hyperosmotic stress, N2CpolyG translocated from the cytoplasm to the nucleus and formed IIs in SH-SY5Y cells, recapitulating the pathological hallmark of NIID patients. Furthermore, N2CpolyG interacted/ co-localized with an RNA-binding protein FUS in the IIs of cellular model and NIID patient tissues, thereby disrupting stress granule formation in cytoplasm under hyperosmotic stress. Consequently, dysregulated expression of microRNAs was found both in NIID patients and cellular model, which could be restored by FUS overexpression in cultured cells. Overall, our findings indicate a mechanism of stress-induced pathological changes as well as neuronal damage, and a potential strategy for the treatment of NIID.
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Affiliation(s)
- Hui Wang
- Department of Neurology, Peking University First Hospital, Beijing 100034, China
| | - Yilei Zheng
- Department of Neurology, Peking University First Hospital, Beijing 100034, China
| | - Jiaxi Yu
- Department of Neurology, Peking University First Hospital, Beijing 100034, China
| | - Lingchao Meng
- Department of Neurology, Peking University First Hospital, Beijing 100034, China
| | - Wei Zhang
- Department of Neurology, Peking University First Hospital, Beijing 100034, China
| | - Daojun Hong
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China; Department of Medical Genetics, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Zhaoxia Wang
- Department of Neurology, Peking University First Hospital, Beijing 100034, China; Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing 100034, China
| | - Yun Yuan
- Department of Neurology, Peking University First Hospital, Beijing 100034, China; Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing 100034, China.
| | - Jianwen Deng
- Department of Neurology, Peking University First Hospital, Beijing 100034, China; Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing 100034, China; Key Laboratory for Neuroscience, Ministry of Education/National Health Commission, Peking University, Beijing 100083, China.
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30
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Zhao B, Cowan CM, Coutts JA, Christy DD, Saraph A, Hsueh SCC, Plotkin SS, Mackenzie IR, Kaplan JM, Cashman NR. Targeting RACK1 to alleviate TDP-43 and FUS proteinopathy-mediated suppression of protein translation and neurodegeneration. Acta Neuropathol Commun 2023; 11:200. [PMID: 38111057 PMCID: PMC10726565 DOI: 10.1186/s40478-023-01705-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 12/06/2023] [Indexed: 12/20/2023] Open
Abstract
TAR DNA-binding protein 43 (TDP-43) and Fused in Sarcoma/Translocated in Sarcoma (FUS) are ribonucleoproteins associated with pathogenesis of amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration (FTLD). Under physiological conditions, TDP-43 and FUS are predominantly localized in the nucleus, where they participate in transcriptional regulation, RNA splicing and metabolism. In disease, however, they are typically mislocalized to the cytoplasm where they form aggregated inclusions. A number of shared cellular pathways have been identified that contribute to TDP-43 and FUS toxicity in neurodegeneration. In the present study, we report a novel pathogenic mechanism shared by these two proteins. We found that pathological FUS co-aggregates with a ribosomal protein, the Receptor for Activated C-Kinase 1 (RACK1), in the cytoplasm of spinal cord motor neurons of ALS, as previously reported for pathological TDP-43. In HEK293T cells transiently transfected with TDP-43 or FUS mutant lacking a functional nuclear localization signal (NLS; TDP-43ΔNLS and FUSΔNLS), cytoplasmic TDP-43 and FUS induced co-aggregation with endogenous RACK1. These co-aggregates sequestered the translational machinery through interaction with the polyribosome, accompanied by a significant reduction of global protein translation. RACK1 knockdown decreased cytoplasmic aggregation of TDP-43ΔNLS or FUSΔNLS and alleviated associated global translational suppression. Surprisingly, RACK1 knockdown also led to partial nuclear localization of TDP-43ΔNLS and FUSΔNLS in some transfected cells, despite the absence of NLS. In vivo, RACK1 knockdown alleviated retinal neuronal degeneration in transgenic Drosophila melanogaster expressing hTDP-43WT or hTDP-43Q331K and improved motor function of hTDP-43WT flies, with no observed adverse effects on neuronal health in control knockdown flies. In conclusion, our results revealed a novel shared mechanism of pathogenesis for misfolded aggregates of TDP-43 and FUS mediated by interference with protein translation in a RACK1-dependent manner. We provide proof-of-concept evidence for targeting RACK1 as a potential therapeutic approach for TDP-43 or FUS proteinopathy associated with ALS and FTLD.
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Affiliation(s)
- Beibei Zhao
- University of British Columbia, Djavad Mowafaghian Centre for Brain Health, Vancouver, BC, V6T 1Z3, Canada
- ProMIS Neurosciences, Cambridge, MA, 02142, USA
| | - Catherine M Cowan
- University of British Columbia, Djavad Mowafaghian Centre for Brain Health, Vancouver, BC, V6T 1Z3, Canada
| | - Juliane A Coutts
- University of British Columbia, Djavad Mowafaghian Centre for Brain Health, Vancouver, BC, V6T 1Z3, Canada
| | - Darren D Christy
- University of British Columbia, Djavad Mowafaghian Centre for Brain Health, Vancouver, BC, V6T 1Z3, Canada
| | - Ananya Saraph
- University of British Columbia, Djavad Mowafaghian Centre for Brain Health, Vancouver, BC, V6T 1Z3, Canada
| | - Shawn C C Hsueh
- Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, V6T 1Z1, Canada
| | - Stephen S Plotkin
- Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, V6T 1Z1, Canada
| | - Ian R Mackenzie
- University of British Columbia, Djavad Mowafaghian Centre for Brain Health, Vancouver, BC, V6T 1Z3, Canada
| | | | - Neil R Cashman
- University of British Columbia, Djavad Mowafaghian Centre for Brain Health, Vancouver, BC, V6T 1Z3, Canada.
- ProMIS Neurosciences, Cambridge, MA, 02142, USA.
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31
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Kim SC, Mitchell SJ, Qamar S, Whitcomb DJ, Ruepp MD, St George-Hyslop P, Cho K. Mimicking hypomethylation of FUS requires liquid-liquid phase separation to induce synaptic dysfunctions. Acta Neuropathol Commun 2023; 11:199. [PMID: 38105257 PMCID: PMC10726623 DOI: 10.1186/s40478-023-01703-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 11/29/2023] [Indexed: 12/19/2023] Open
Abstract
The hypomethylation of fused in sarcoma (FUS) in frontotemporal lobar degeneration promotes the formation of irreversible condensates of FUS. However, the mechanisms by which these hypomethylated FUS condensates cause neuronal dysfunction are unknown. Here we report that expression of FUS constructs mimicking hypomethylated FUS causes aberrant dendritic FUS condensates in CA1 neurons. These hypomethylated FUS condensates exhibit spontaneous, and activity induced movement within the dendrite. They impair excitatory synaptic transmission, postsynaptic density-95 expression, and dendritic spine plasticity. These neurophysiological defects are dependent upon both the dendritic localisation of the condensates, and their ability to undergo liquid-liquid phase separation. These results indicate that the irreversible liquid-liquid phase separation is a key component of hypomethylated FUS pathophysiology in sporadic FTLD, and this can cause synapse dysfunction in sporadic FTLD.
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Affiliation(s)
- Seung Chan Kim
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, UK-Dementia Research Institute, Maurice Wohl Clinical Neuroscience Institute, King's College London, London, SE5 9NU, UK
| | - Scott J Mitchell
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, UK-Dementia Research Institute, Maurice Wohl Clinical Neuroscience Institute, King's College London, London, SE5 9NU, UK
| | - Seema Qamar
- Department of Clinical Neurosciences, Cambridge Institute for Medical Research, University of Cambridge, Cambridge, CB2 0XY, UK
| | | | - Marc-David Ruepp
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, UK-Dementia Research Institute, Maurice Wohl Clinical Neuroscience Institute, King's College London, London, SE5 9NU, UK
| | - Peter St George-Hyslop
- Department of Clinical Neurosciences, Cambridge Institute for Medical Research, University of Cambridge, Cambridge, CB2 0XY, UK
- Department of Medicine (Division of Neurology), University Health Network and Tanz Centre for Research In Neurodegenerative Diseases, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, M5S 3H2, Canada
- Taub Institute For Research On Alzheimer's Disease and the Aging Brain, Department of Neurology, Columbia University Irving Medical Center, 630 West 168 Street, New York, NY, 10032, USA
| | - Kwangwook Cho
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, UK-Dementia Research Institute, Maurice Wohl Clinical Neuroscience Institute, King's College London, London, SE5 9NU, UK.
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32
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Wang R, Zhong J, Pan X, Su Z, Xu Y, Zhang M, Chen X, Chen N, Yu T, Zhou Q. A novel intronic circular RNA circFGFR1 int2 up-regulates FGFR1 by recruiting transcriptional activators P65/FUS and suppressing miR-4687-5p to promote prostate cancer progression. J Transl Med 2023; 21:840. [PMID: 37993879 PMCID: PMC10664560 DOI: 10.1186/s12967-023-04718-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/10/2023] [Indexed: 11/24/2023] Open
Abstract
Fibroblast growth factor receptor 1 (FGFR1) is a core component of the FGFs/FGFR pathway that activates multiple signalling pathways, including ERK1/2, PI3K/AKT, PLCγ, and NF-κB. Aberrant expression of FGFR1 due to gene amplification, chromosome rearrangement, point mutation, and epigenetic deregulations, have been reported in various cancers. FGFR1 overexpression has also been reported in prostate cancer (PCa), but the underlining mechanisms are not clear. Here we report a novel circular RNA, circFGFR1int2, derived from intron 2 of FGFR1 gene, which is overexpressed in PCa and associated with tumor progression. Importantly, we show that circFGFR1int2 facilitates FGFR1 transcription by recruiting transcription activators P65/FUS and by interacting with FGFR1 promoter. Moreover, we show that circFGFR1int2 suppresses post-transcriptional inhibitory effects of miR-4687-5p on FGFR1 mRNA. These mechanisms synergistically promote PCa cell growth, migration, and invasion. Overexpression of circFGFR1int2 is significantly correlated with higher tumor grade, Gleason score, and PSA level, and is a significant unfavorable prognosticator for CRPC-free survival (CFS) (RR = 3.277, 95% confidence interval: 1.192-9.009; P = 0.021). These findings unravelled novel mechanisms controlling FGFR1 gene expression by intronic circRNA and its potential clinicopathological utility as a diagnostic or therapeutic target.
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Affiliation(s)
- Ruyue Wang
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Jinjing Zhong
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xiuyi Pan
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhengzheng Su
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yunyi Xu
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Mengni Zhang
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xueqin Chen
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Ni Chen
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Ting Yu
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, 610041, China.
| | - Qiao Zhou
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, 610041, China.
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Pelaez MC, Desmeules A, Gelon PA, Glasson B, Marcadet L, Rodgers A, Phaneuf D, Pozzi S, Dutchak PA, Julien JP, Sephton CF. Neuronal dysfunction caused by FUSR521G promotes ALS-associated phenotypes that are attenuated by NF-κB inhibition. Acta Neuropathol Commun 2023; 11:182. [PMID: 37974279 PMCID: PMC10652582 DOI: 10.1186/s40478-023-01671-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/09/2023] [Indexed: 11/19/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) are related neurodegenerative diseases that belong to a common disease spectrum based on overlapping clinical, pathological and genetic evidence. Early pathological changes to the morphology and synapses of affected neuron populations in ALS/FTD suggest a common underlying mechanism of disease that requires further investigation. Fused in sarcoma (FUS) is a DNA/RNA-binding protein with known genetic and pathological links to ALS/FTD. Expression of ALS-linked FUS mutants in mice causes cognitive and motor defects, which correlate with loss of motor neuron dendritic branching and synapses, in addition to other pathological features of ALS/FTD. The role of ALS-linked FUS mutants in causing ALS/FTD-associated disease phenotypes is well established, but there are significant gaps in our understanding of the cell-autonomous role of FUS in promoting structural changes to motor neurons, and how these changes relate to disease progression. Here we generated a neuron-specific FUS-transgenic mouse model expressing the ALS-linked human FUSR521G variant, hFUSR521G/Syn1, to investigate the cell-autonomous role of FUSR521G in causing loss of dendritic branching and synapses of motor neurons, and to understand how these changes relate to ALS-associated phenotypes. Longitudinal analysis of mice revealed that cognitive impairments in juvenile hFUSR521G/Syn1 mice coincide with reduced dendritic branching of cortical motor neurons in the absence of motor impairments or changes in the neuromorphology of spinal motor neurons. Motor impairments and dendritic attrition of spinal motor neurons developed later in aged hFUSR521G/Syn1 mice, along with FUS cytoplasmic mislocalisation, mitochondrial abnormalities and glial activation. Neuroinflammation promotes neuronal dysfunction and drives disease progression in ALS/FTD. The therapeutic effects of inhibiting the pro-inflammatory nuclear factor kappa B (NF-κB) pathway with an analog of Withaferin A, IMS-088, were assessed in symptomatic hFUSR521G/Syn1 mice and were found to improve cognitive and motor function, increase dendritic branches and synapses of motor neurons, and attenuate other ALS/FTD-associated pathological features. Treatment of primary cortical neurons expressing FUSR521G with IMS-088 promoted the restoration of dendritic mitochondrial numbers and mitochondrial activity to wild-type levels, suggesting that inhibition of NF-κB permits the restoration of mitochondrial stasis in our models. Collectively, this work demonstrates that FUSR521G has a cell-autonomous role in causing early pathological changes to dendritic and synaptic structures of motor neurons, and that these changes precede motor defects and other well-known pathological features of ALS/FTD. Finally, these findings provide further support that modulation of the NF-κB pathway in ALS/FTD is an important therapeutic approach to attenuate disease.
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Affiliation(s)
- Mari Carmen Pelaez
- Department of Psychiatry and Neuroscience, CERVO Brain Research Centre, Laval University, Quebec City, QC, Canada
| | - Antoine Desmeules
- Department of Psychiatry and Neuroscience, CERVO Brain Research Centre, Laval University, Quebec City, QC, Canada
| | - Pauline A Gelon
- Department of Psychiatry and Neuroscience, CERVO Brain Research Centre, Laval University, Quebec City, QC, Canada
| | - Bastien Glasson
- Department of Psychiatry and Neuroscience, CERVO Brain Research Centre, Laval University, Quebec City, QC, Canada
| | - Laetitia Marcadet
- Department of Psychiatry and Neuroscience, CERVO Brain Research Centre, Laval University, Quebec City, QC, Canada
| | - Alicia Rodgers
- Department of Psychiatry and Neuroscience, CERVO Brain Research Centre, Laval University, Quebec City, QC, Canada
| | - Daniel Phaneuf
- Department of Psychiatry and Neuroscience, CERVO Brain Research Centre, Laval University, Quebec City, QC, Canada
| | - Silvia Pozzi
- Department of Psychiatry and Neuroscience, CERVO Brain Research Centre, Laval University, Quebec City, QC, Canada
| | - Paul A Dutchak
- Department of Psychiatry and Neuroscience, CERVO Brain Research Centre, Laval University, Quebec City, QC, Canada
| | - Jean-Pierre Julien
- Department of Psychiatry and Neuroscience, CERVO Brain Research Centre, Laval University, Quebec City, QC, Canada
| | - Chantelle F Sephton
- Department of Psychiatry and Neuroscience, CERVO Brain Research Centre, Laval University, Quebec City, QC, Canada.
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Mamontova EM, Clément MJ, Sukhanova MV, Joshi V, Bouhss A, Rengifo-Gonzalez JC, Desforges B, Hamon L, Lavrik OI, Pastré D. FUS RRM regulates poly(ADP-ribose) levels after transcriptional arrest and PARP-1 activation on DNA damage. Cell Rep 2023; 42:113199. [PMID: 37804508 DOI: 10.1016/j.celrep.2023.113199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 07/08/2023] [Accepted: 09/15/2023] [Indexed: 10/09/2023] Open
Abstract
PARP-1 activation at DNA damage sites leads to the synthesis of long poly(ADP-ribose) (PAR) chains, which serve as a signal for DNA repair. Here we show that FUS, an RNA-binding protein, is specifically directed to PAR through its RNA recognition motif (RRM) to increase PAR synthesis by PARP-1 in HeLa cells after genotoxic stress. Using a structural approach, we also identify specific residues located in the FUS RRM, which can be PARylated by PARP-1 to control the level of PAR synthesis. Based on the results of this work, we propose a model in which, following a transcriptional arrest that releases FUS from nascent mRNA, FUS can be recruited by PARP-1 activated by DNA damage to stimulate PAR synthesis. We anticipate that this model offers new perspectives to understand the role of FET proteins in cancers and in certain neurodegenerative diseases such as amyotrophic lateral sclerosis.
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Affiliation(s)
- Evgeniya M Mamontova
- SABNP, University Evry, INSERM U1204, Université Paris-Saclay, 91025 Evry, France; Institute of Chemical Biology and Fundamental Medicine SB RAS, Lavrentiev Av. 8, Novosibirsk 630090, Russia; Department of Natural Sciences, Novosibirsk State University, 2 Pirogov Street, Novosibirsk 630090, Russia
| | - Marie-Jeanne Clément
- SABNP, University Evry, INSERM U1204, Université Paris-Saclay, 91025 Evry, France
| | - Maria V Sukhanova
- Institute of Chemical Biology and Fundamental Medicine SB RAS, Lavrentiev Av. 8, Novosibirsk 630090, Russia
| | - Vandana Joshi
- SABNP, University Evry, INSERM U1204, Université Paris-Saclay, 91025 Evry, France
| | - Ahmed Bouhss
- SABNP, University Evry, INSERM U1204, Université Paris-Saclay, 91025 Evry, France
| | | | - Bénédicte Desforges
- SABNP, University Evry, INSERM U1204, Université Paris-Saclay, 91025 Evry, France
| | - Loic Hamon
- SABNP, University Evry, INSERM U1204, Université Paris-Saclay, 91025 Evry, France
| | - Olga I Lavrik
- Institute of Chemical Biology and Fundamental Medicine SB RAS, Lavrentiev Av. 8, Novosibirsk 630090, Russia; Department of Natural Sciences, Novosibirsk State University, 2 Pirogov Street, Novosibirsk 630090, Russia.
| | - David Pastré
- SABNP, University Evry, INSERM U1204, Université Paris-Saclay, 91025 Evry, France.
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35
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Provasek VE, Kodavati M, Guo W, Wang H, Boldogh I, Van Den Bosch L, Britz G, Hegde ML. lncRNA Sequencing Reveals Neurodegeneration-Associated FUS Mutations Alter Transcriptional Landscape of iPS Cells That Persists in Motor Neurons. Cells 2023; 12:2461. [PMID: 37887305 PMCID: PMC10604943 DOI: 10.3390/cells12202461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/13/2023] [Accepted: 10/13/2023] [Indexed: 10/28/2023] Open
Abstract
Fused-in sarcoma (FUS) gene mutations have been implicated in amyotrophic lateral sclerosis (ALS). This study aimed to investigate the impact of FUS mutations (R521H and P525L) on the transcriptome of induced pluripotent stem cells (iPSCs) and iPSC-derived motor neurons (iMNs). Using RNA sequencing (RNA Seq), we characterized differentially expressed genes (DEGs) and differentially expressed lncRNAs (DELs) and subsequently predicted lncRNA-mRNA target pairs (TAR pairs). Our results show that FUS mutations significantly altered the expression profiles of mRNAs and lncRNAs in iPSCs. Using this large dataset, we identified and verified six key differentially regulated TAR pairs in iPSCs that were also altered in iMNs. These target transcripts included: GPR149, NR4A, LMO3, SLC15A4, ZNF404, and CRACD. These findings indicated that selected mutant FUS-induced transcriptional alterations persist from iPSCs into differentiated iMNs. Functional enrichment analyses of DEGs indicated pathways associated with neuronal development and carcinogenesis as likely altered by these FUS mutations. Furthermore, ingenuity pathway analysis (IPA) and GO network analysis of lncRNA-targeted mRNAs indicated associations between RNA metabolism, lncRNA regulation, and DNA damage repair. Our findings provide insights into potential molecular mechanisms underlying the pathophysiology of ALS-associated FUS mutations and suggest potential therapeutic targets for the treatment of ALS.
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Affiliation(s)
- Vincent E. Provasek
- Division of DNA Repair Research within the Center for Neuroregeneration, Department of Neurosurgery, Houston Methodist Research Institute, Houston, TX 77030, USA; (V.E.P.); (M.K.); (H.W.)
- School of Medicine, Texas A&M University, College Station, TX 77843, USA
| | - Manohar Kodavati
- Division of DNA Repair Research within the Center for Neuroregeneration, Department of Neurosurgery, Houston Methodist Research Institute, Houston, TX 77030, USA; (V.E.P.); (M.K.); (H.W.)
| | - Wenting Guo
- INSERM, UMR-S1118, Mécanismes Centraux et Périphériques de la Neurodégénérescence, Université de Strasbourg, CRBS, 67000 Strasbourg, France;
- VIB, Center for Brain & Disease Research, 3000 Leuven, Belgium
- Leuven Brain Institute (LBI), 3000 Leuven, Belgium
- Stem Cell Institute, Department of Development and Regeneration, KU Leuven, 3000 Leuven, Belgium;
| | - Haibo Wang
- Division of DNA Repair Research within the Center for Neuroregeneration, Department of Neurosurgery, Houston Methodist Research Institute, Houston, TX 77030, USA; (V.E.P.); (M.K.); (H.W.)
| | - Istvan Boldogh
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA;
| | - Ludo Van Den Bosch
- Stem Cell Institute, Department of Development and Regeneration, KU Leuven, 3000 Leuven, Belgium;
| | - Gavin Britz
- Department of Neurosurgery, Houston Methodist Research Institute, Houston, TX 77030, USA;
| | - Muralidhar L. Hegde
- Division of DNA Repair Research within the Center for Neuroregeneration, Department of Neurosurgery, Houston Methodist Research Institute, Houston, TX 77030, USA; (V.E.P.); (M.K.); (H.W.)
- School of Medicine, Texas A&M University, College Station, TX 77843, USA
- Department of Neurosurgery, Weill Cornell Medical College, New York, NY 10065, USA
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Motaln H, Čerček U, Yamoah A, Tripathi P, Aronica E, Goswami A, Rogelj B. Abl kinase-mediated FUS Tyr526 phosphorylation alters nucleocytoplasmic FUS localization in FTLD-FUS. Brain 2023; 146:4088-4104. [PMID: 37071594 PMCID: PMC10545532 DOI: 10.1093/brain/awad130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 03/02/2023] [Accepted: 03/28/2023] [Indexed: 04/19/2023] Open
Abstract
Nuclear to cytoplasmic mislocalization and aggregation of multiple RNA-binding proteins (RBPs), including FUS, are the main neuropathological features of the majority of cases of amyotrophic lateral sclerosis (ALS) and frontotemporal lobular degeneration (FTLD). In ALS-FUS, these aggregates arise from disease-associated mutations in FUS, whereas in FTLD-FUS, the cytoplasmic inclusions do not contain mutant FUS, suggesting different molecular mechanisms of FUS pathogenesis in FTLD that remain to be investigated. We have previously shown that phosphorylation of the C-terminal Tyr526 of FUS results in increased cytoplasmic retention of FUS due to impaired binding to the nuclear import receptor TNPO1. Inspired by the above notions, in the current study we developed a novel antibody against the C-terminally phosphorylated Tyr526 FUS (FUSp-Y526) that is specifically capable of recognizing phosphorylated cytoplasmic FUS, which is poorly recognized by other commercially available FUS antibodies. Using this FUSp-Y526 antibody, we demonstrated a FUS phosphorylation-specific effect on the cytoplasmic distribution of soluble and insoluble FUSp-Y526 in various cells and confirmed the involvement of the Src kinase family in Tyr526 FUS phosphorylation. In addition, we found that FUSp-Y526 expression pattern correlates with active pSrc/pAbl kinases in specific brain regions of mice, indicating preferential involvement of cAbl in the cytoplasmic mislocalization of FUSp-Y526 in cortical neurons. Finally, the pattern of immunoreactivity of active cAbl kinase and FUSp-Y526 revealed altered cytoplasmic distribution of FUSp-Y526 in cortical neurons of post-mortem frontal cortex tissue from FTLD patients compared with controls. The overlap of FUSp-Y526 and FUS signals was found preferentially in small diffuse inclusions and was absent in mature aggregates, suggesting possible involvement of FUSp-Y526 in the formation of early toxic FUS aggregates in the cytoplasm that are largely undetected by commercially available FUS antibodies. Given the overlapping patterns of cAbl activity and FUSp-Y526 distribution in cortical neurons, and cAbl induced sequestration of FUSp-Y526 into G3BP1 positive granules in stressed cells, we propose that cAbl kinase is actively involved in mediating cytoplasmic mislocalization and promoting toxic aggregation of wild-type FUS in the brains of FTLD patients, as a novel putative underlying mechanism of FTLD-FUS pathophysiology and progression.
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Affiliation(s)
- Helena Motaln
- Department of Biotechnology, Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia
| | - Urša Čerček
- Department of Biotechnology, Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia
- Graduate School of Biomedicine, Faculty of Medicine, University of Ljubljana, SI-1000 Ljubljana, Slovenia
| | - Alfred Yamoah
- Institute of Neuropathology, RWTH Aachen University Medical School, 52074 Aachen, Germany
| | - Priyanka Tripathi
- Institute of Neuropathology, RWTH Aachen University Medical School, 52074 Aachen, Germany
| | - Eleonora Aronica
- Amsterdam UMC location University of Amsterdam, Department of Neuropathology, Amsterdam Neuroscience, 1105 Amsterdam, The Netherlands
| | - Anand Goswami
- Institute of Neuropathology, RWTH Aachen University Medical School, 52074 Aachen, Germany
- Department of Neurology, Center for Motor Neuron Biology and Disease, Columbia University, New York, NY 10032, USA
- Department of Neurology, Eleanor and Lou Gherig ALS Center, Columbia University, New York, NY 10032, USA
| | - Boris Rogelj
- Department of Biotechnology, Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, SI-1000 Ljubljana, Slovenia
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37
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Ali Z, Godoy-Corchuelo JM, Martins-Bach AB, Garcia-Toledo I, Fernández-Beltrán LC, Nair RR, Spring S, Nieman BJ, Jimenez-Coca I, Bains RS, Forrest H, Lerch JP, Miller KL, Fisher EMC, Cunningham TJ, Corrochano S. Mutation in the FUS nuclear localisation signal domain causes neurodevelopmental and systemic metabolic alterations. Dis Model Mech 2023; 16:dmm050200. [PMID: 37772684 PMCID: PMC10642611 DOI: 10.1242/dmm.050200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 08/29/2023] [Indexed: 09/30/2023] Open
Abstract
Variants in the ubiquitously expressed DNA/RNA-binding protein FUS cause aggressive juvenile forms of amyotrophic lateral sclerosis (ALS). Most FUS mutation studies have focused on motor neuron degeneration; little is known about wider systemic or developmental effects. We studied pleiotropic phenotypes in a physiological knock-in mouse model carrying the pathogenic FUSDelta14 mutation in homozygosity. RNA sequencing of multiple organs aimed to identify pathways altered by the mutant protein in the systemic transcriptome, including metabolic tissues, given the link between ALS-frontotemporal dementia and altered metabolism. Few genes were commonly altered across all tissues, and most genes and pathways affected were generally tissue specific. Phenotypic assessment of mice revealed systemic metabolic alterations related to the pathway changes identified. Magnetic resonance imaging brain scans and histological characterisation revealed that homozygous FUSDelta14 brains were smaller than heterozygous and wild-type brains and displayed significant morphological alterations, including a thinner cortex, reduced neuronal number and increased gliosis, which correlated with early cognitive impairment and fatal seizures. These findings show that the disease aetiology of FUS variants can include both neurodevelopmental and systemic alterations.
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Affiliation(s)
- Zeinab Ali
- Neurological Disorders Group, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria Hospital Clínico San Carlos (IdiSSC), Madrid 28040, Spain
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3PT, UK
- Mammalian Genetics Unit, MRC Harwell Institute, Didcot, Oxfordshire OX11 ORD, UK
| | - Juan M. Godoy-Corchuelo
- Neurological Disorders Group, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria Hospital Clínico San Carlos (IdiSSC), Madrid 28040, Spain
| | - Aurea B. Martins-Bach
- Wellcome Centre for Integrative Neuroimaging, University of Oxford, Oxford OX3 9D, UK
| | - Irene Garcia-Toledo
- Neurological Disorders Group, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria Hospital Clínico San Carlos (IdiSSC), Madrid 28040, Spain
| | - Luis C. Fernández-Beltrán
- Neurological Disorders Group, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria Hospital Clínico San Carlos (IdiSSC), Madrid 28040, Spain
- Department of Medicine, Universidad Complutense de Madrid, Madrid 28040, Spain
| | - Remya R. Nair
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3PT, UK
- Mammalian Genetics Unit, MRC Harwell Institute, Didcot, Oxfordshire OX11 ORD, UK
| | - Shoshana Spring
- Mouse Imaging Centre, The Hospital for Sick Children, Toronto, ON M57 3H7, Canada
| | - Brian J. Nieman
- Mouse Imaging Centre, The Hospital for Sick Children, Toronto, ON M57 3H7, Canada
| | - Irene Jimenez-Coca
- Neurological Disorders Group, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria Hospital Clínico San Carlos (IdiSSC), Madrid 28040, Spain
| | - Rasneer S. Bains
- Mary Lyon Centre at MRC Harwell, Didcot, Oxfordshire OX11 ORD, UK
| | - Hamish Forrest
- Mary Lyon Centre at MRC Harwell, Didcot, Oxfordshire OX11 ORD, UK
| | - Jason P. Lerch
- Wellcome Centre for Integrative Neuroimaging, University of Oxford, Oxford OX3 9D, UK
| | - Karla L. Miller
- Wellcome Centre for Integrative Neuroimaging, University of Oxford, Oxford OX3 9D, UK
| | - Elizabeth M. C. Fisher
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London WC1N 3BG, UK
| | - Thomas J. Cunningham
- Mammalian Genetics Unit, MRC Harwell Institute, Didcot, Oxfordshire OX11 ORD, UK
- MRC Prion Unit at UCL, UCL Institute of Prion Diseases, University College London, London W1W 7FF, UK
| | - Silvia Corrochano
- Neurological Disorders Group, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria Hospital Clínico San Carlos (IdiSSC), Madrid 28040, Spain
- Mammalian Genetics Unit, MRC Harwell Institute, Didcot, Oxfordshire OX11 ORD, UK
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Castillo Bautista CM, Eismann K, Gentzel M, Pelucchi S, Mertens J, Walters HE, Yun MH, Sterneckert J. Obatoclax Rescues FUS-ALS Phenotypes in iPSC-Derived Neurons by Inducing Autophagy. Cells 2023; 12:2247. [PMID: 37759469 PMCID: PMC10527391 DOI: 10.3390/cells12182247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 09/08/2023] [Accepted: 09/09/2023] [Indexed: 09/29/2023] Open
Abstract
Aging is associated with the disruption of protein homeostasis and causally contributes to multiple diseases, including amyotrophic lateral sclerosis (ALS). One strategy for restoring protein homeostasis and protecting neurons against age-dependent diseases such as ALS is to de-repress autophagy. BECN1 is a master regulator of autophagy; however, is repressed by BCL2 via a BH3 domain-mediated interaction. We used an induced pluripotent stem cell model of ALS caused by mutant FUS to identify a small molecule BH3 mimetic that disrupts the BECN1-BCL2 interaction. We identified obatoclax as a brain-penetrant drug candidate that rescued neurons at nanomolar concentrations by reducing cytoplasmic FUS levels, restoring protein homeostasis, and reducing degeneration. Proteomics data suggest that obatoclax protects neurons via multiple mechanisms. Thus, obatoclax is a candidate for repurposing as a possible ALS therapeutic and, potentially, for other age-associated disorders linked to defects in protein homeostasis.
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Affiliation(s)
| | - Kristin Eismann
- Core Facility Mass Spectrometry & Proteomics, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, 01307 Dresden, Germany (M.G.)
| | - Marc Gentzel
- Core Facility Mass Spectrometry & Proteomics, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, 01307 Dresden, Germany (M.G.)
| | - Silvia Pelucchi
- Department of Neurosciences, University of California San Diego, La Jolla, CA 92161, USA (J.M.)
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milan, Italy
| | - Jerome Mertens
- Department of Neurosciences, University of California San Diego, La Jolla, CA 92161, USA (J.M.)
- Laboratory of Genetics, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA
- Institute for Molecular Biology, University of Innsbruck, A-6020 Innsbruck, Austria
| | - Hannah E. Walters
- Center for Regenerative Therapies TU Dresden (CRTD), Technische Universität Dresden, 01307 Dresden, Germany; (C.M.C.B.); (H.E.W.)
| | - Maximina H. Yun
- Center for Regenerative Therapies TU Dresden (CRTD), Technische Universität Dresden, 01307 Dresden, Germany; (C.M.C.B.); (H.E.W.)
- Max Planck Institute for Molecular Cell Biology and Genetics, 01307 Dresden, Germany
- Cluster of Excellence Physics of Life, Technische Universität Dresden, 01307 Dresden, Germany
| | - Jared Sterneckert
- Center for Regenerative Therapies TU Dresden (CRTD), Technische Universität Dresden, 01307 Dresden, Germany; (C.M.C.B.); (H.E.W.)
- Medical Faculty Carl Gustav Carus of TU Dresden, 01307 Dresden, Germany
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39
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Hou J, Yang S, Guo Y, Yan N, Jia S. FUS regulates the alternative splicing of cell proliferation genes related to atherosclerosis. Exp Biol Med (Maywood) 2023; 248:1459-1468. [PMID: 37688506 PMCID: PMC10666725 DOI: 10.1177/15353702231187642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 02/28/2023] [Indexed: 09/11/2023] Open
Abstract
FUS plays a significant role as an RNA-binding protein in several cellular processes, including RNA splicing, DNA repair, and transcriptional regulation. However, the RNA-binding capacity of FUS in atherosclerosis is unclear. We aimed to study the functions of FUS in inflammatory regulation through the role of the splicing factor. We knocked down FUS with siRNA to further study the overall transcriptional level and select alternative splicing (AS) of FUS regulation in human umbilical vein endothelial cells (HUVECs) by RNA sequencing. The results suggested that the knockdown of FUS significantly affected gene expression in HUVECs. In addition, the knockdown of FUS resulted in 200 differentially expressed genes (DEGs) that were highly related to apoptotic process, signal transduction, multicellular organism development, cell adhesion and regulation of transcription, and DNA-templated pathways. Importantly, FUS extensively regulated 2870 AS events with a significant difference. Functional analysis of its modulated AS genes revealed they were highly enriched in cell cycle and cell population proliferation pathways. The qRT-PCR and RNA-seq data showed consistent results. Our findings suggested new knowledge of the mechanisms of FUS associated with atherosclerosis.
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Affiliation(s)
- Jianjun Hou
- Department of Cardiology, General Hospital of Ningxia Medical University, Yinchuan 750000, China
| | - Shaobing Yang
- Department of Cardiology, General Hospital of Ningxia Medical University, Yinchuan 750000, China
| | - Ying Guo
- Department of Cardiology, General Hospital of Ningxia Medical University, Yinchuan 750000, China
| | - Ning Yan
- Department of Cardiology, General Hospital of Ningxia Medical University, Yinchuan 750000, China
| | - Shaobin Jia
- Department of Cardiology, General Hospital of Ningxia Medical University, Yinchuan 750000, China
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40
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Tzeplaeff L, Seguin J, Le Gras S, Megat S, Cosquer B, Plassard D, Dieterlé S, Paiva I, Picchiarelli G, Decraene C, Alcala-Vida R, Cassel JC, Merienne K, Dupuis L, Boutillier AL. Mutant FUS induces chromatin reorganization in the hippocampus and alters memory processes. Prog Neurobiol 2023; 227:102483. [PMID: 37327984 DOI: 10.1016/j.pneurobio.2023.102483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 05/12/2023] [Accepted: 06/09/2023] [Indexed: 06/18/2023]
Abstract
Cytoplasmic mislocalization of the nuclear Fused in Sarcoma (FUS) protein is associated to amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). Cytoplasmic FUS accumulation is recapitulated in the frontal cortex and spinal cord of heterozygous Fus∆NLS/+ mice. Yet, the mechanisms linking FUS mislocalization to hippocampal function and memory formation are still not characterized. Herein, we show that in these mice, the hippocampus paradoxically displays nuclear FUS accumulation. Multi-omic analyses showed that FUS binds to a set of genes characterized by the presence of an ETS/ELK-binding motifs, and involved in RNA metabolism, transcription, ribosome/mitochondria and chromatin organization. Importantly, hippocampal nuclei showed a decompaction of the neuronal chromatin at highly expressed genes and an inappropriate transcriptomic response was observed after spatial training of Fus∆NLS/+ mice. Furthermore, these mice lacked precision in a hippocampal-dependent spatial memory task and displayed decreased dendritic spine density. These studies shows that mutated FUS affects epigenetic regulation of the chromatin landscape in hippocampal neurons, which could participate in FTD/ALS pathogenic events. These data call for further investigation in the neurological phenotype of FUS-related diseases and open therapeutic strategies towards epigenetic drugs.
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Affiliation(s)
- Laura Tzeplaeff
- Université de Strasbourg, Laboratoire de Neuroscience Cognitives et Adaptatives (LNCA), Strasbourg, France; CNRS, UMR 7364, Strasbourg 67000, France; Université de Strasbourg, INSERM, UMR-S1118, Strasbourg, France
| | - Jonathan Seguin
- Université de Strasbourg, Laboratoire de Neuroscience Cognitives et Adaptatives (LNCA), Strasbourg, France; CNRS, UMR 7364, Strasbourg 67000, France
| | - Stéphanie Le Gras
- Université de Strasbourg, CNRS UMR 7104, INSERM U1258, GenomEast Platform, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, Illkirch, France
| | - Salim Megat
- Université de Strasbourg, INSERM, UMR-S1118, Strasbourg, France
| | - Brigitte Cosquer
- Université de Strasbourg, Laboratoire de Neuroscience Cognitives et Adaptatives (LNCA), Strasbourg, France; CNRS, UMR 7364, Strasbourg 67000, France
| | - Damien Plassard
- Université de Strasbourg, CNRS UMR 7104, INSERM U1258, GenomEast Platform, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, Illkirch, France
| | | | - Isabel Paiva
- Université de Strasbourg, Laboratoire de Neuroscience Cognitives et Adaptatives (LNCA), Strasbourg, France; CNRS, UMR 7364, Strasbourg 67000, France
| | | | - Charles Decraene
- Université de Strasbourg, Laboratoire de Neuroscience Cognitives et Adaptatives (LNCA), Strasbourg, France; CNRS, UMR 7364, Strasbourg 67000, France
| | - Rafael Alcala-Vida
- Université de Strasbourg, Laboratoire de Neuroscience Cognitives et Adaptatives (LNCA), Strasbourg, France; CNRS, UMR 7364, Strasbourg 67000, France
| | - Jean-Christophe Cassel
- Université de Strasbourg, Laboratoire de Neuroscience Cognitives et Adaptatives (LNCA), Strasbourg, France; CNRS, UMR 7364, Strasbourg 67000, France
| | - Karine Merienne
- Université de Strasbourg, Laboratoire de Neuroscience Cognitives et Adaptatives (LNCA), Strasbourg, France; CNRS, UMR 7364, Strasbourg 67000, France
| | - Luc Dupuis
- Université de Strasbourg, INSERM, UMR-S1118, Strasbourg, France.
| | - Anne-Laurence Boutillier
- Université de Strasbourg, Laboratoire de Neuroscience Cognitives et Adaptatives (LNCA), Strasbourg, France.
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41
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Fujino Y, Ueyama M, Ishiguro T, Ozawa D, Ito H, Sugiki T, Murata A, Ishiguro A, Gendron T, Mori K, Tokuda E, Taminato T, Konno T, Koyama A, Kawabe Y, Takeuchi T, Furukawa Y, Fujiwara T, Ikeda M, Mizuno T, Mochizuki H, Mizusawa H, Wada K, Ishikawa K, Onodera O, Nakatani K, Petrucelli L, Taguchi H, Nagai Y. FUS regulates RAN translation through modulating the G-quadruplex structure of GGGGCC repeat RNA in C9orf72-linked ALS/FTD. eLife 2023; 12:RP84338. [PMID: 37461319 PMCID: PMC10393046 DOI: 10.7554/elife.84338] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023] Open
Abstract
Abnormal expansions of GGGGCC repeat sequence in the noncoding region of the C9orf72 gene is the most common cause of familial amyotrophic lateral sclerosis and frontotemporal dementia (C9-ALS/FTD). The expanded repeat sequence is translated into dipeptide repeat proteins (DPRs) by noncanonical repeat-associated non-AUG (RAN) translation. Since DPRs play central roles in the pathogenesis of C9-ALS/FTD, we here investigate the regulatory mechanisms of RAN translation, focusing on the effects of RNA-binding proteins (RBPs) targeting GGGGCC repeat RNAs. Using C9-ALS/FTD model flies, we demonstrated that the ALS/FTD-linked RBP FUS suppresses RAN translation and neurodegeneration in an RNA-binding activity-dependent manner. Moreover, we found that FUS directly binds to and modulates the G-quadruplex structure of GGGGCC repeat RNA as an RNA chaperone, resulting in the suppression of RAN translation in vitro. These results reveal a previously unrecognized regulatory mechanism of RAN translation by G-quadruplex-targeting RBPs, providing therapeutic insights for C9-ALS/FTD and other repeat expansion diseases.
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Grants
- Scientific Research on Innovative Areas (Brain Protein Aging and Dementia Control) 17H05699 Ministry of Education, Culture, Sports, Science and Technology
- Scientific Research on Innovative Areas (Brain Protein Aging and Dementia Control) 17H05705 Ministry of Education, Culture, Sports, Science and Technology
- Transformative Research Areas (A) (Multifaceted Proteins) 20H05927 Ministry of Education, Culture, Sports, Science and Technology
- Strategic Research Program for Brain Sciences 11013026 Ministry of Education, Culture, Sports, Science and Technology
- Scientific Research (B) 21H02840 Japan Society for the Promotion of Science
- Scientific Research (B) 20H03602 Japan Society for the Promotion of Science
- Scientific Research (C) 15K09331 Japan Society for the Promotion of Science
- Scientific Research (C) 19K07823 Japan Society for the Promotion of Science
- Scientific Research (C) 17K07291 Japan Society for the Promotion of Science
- Young Scientists (A) 17H05091 Japan Society for the Promotion of Science
- Young Scientists (B) 25860733 Japan Society for the Promotion of Science
- Challenging Exploratory Research 24659438 Japan Society for the Promotion of Science
- Challenging Exploratory Research 18K19515 Japan Society for the Promotion of Science
- Health Labor Sciences Research Grant for Research on Development of New Drugs H24-Soyaku-Sogo-002 Ministry of Health, Labor and Welfare, Japan
- Strategic Research Program for Brain Sciences JP15dm0107026 Japan Agency for Medical Research and Development
- Strategic Research Program for Brain Sciences JP20dm0107061 Japan Agency for Medical Research and Development
- Practical Research Projects for Rare/Intractable Diseases JP16ek0109018 Japan Agency for Medical Research and Development
- Practical Research Projects for Rare/Intractable Diseases JP19ek0109222 Japan Agency for Medical Research and Development
- Practical Research Projects for Rare/Intractable Diseases JP20ek0109316 Japan Agency for Medical Research and Development
- Platform Project for Supporting Drug Discovery and Life Science Research JP19am0101072 Japan Agency for Medical Research and Development
- Intramural Research Grants for Neurological and Psychiatric Disorders 27-7 National Center of Neurology and Psychiatry
- Intramural Research Grants for Neurological and Psychiatric Disorders 27-9 National Center of Neurology and Psychiatry
- Intramural Research Grants for Neurological and Psychiatric Disorders 30-3 National Center of Neurology and Psychiatry
- Intramural Research Grants for Neurological and Psychiatric Disorders 30-9 National Center of Neurology and Psychiatry
- Intramural Research Grants for Neurological and Psychiatric Disorders 3-9 National Center of Neurology and Psychiatry
- IBC Grant H28 Japan Amyotrophic Lateral Sclerosis Association
- 2017 Takeda Science Foundation
- 2016 Takeda Science Foundation
- 2018 SENSHIN Medical Research Foundation
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Affiliation(s)
- Yuzo Fujino
- Department of Neurology, Kindai University Faculty of Medicine, Osaka-Sayama, Japan
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Morio Ueyama
- Department of Neurology, Kindai University Faculty of Medicine, Osaka-Sayama, Japan
- Department of Neurotherapeutics, Osaka University Graduate School of Medicine, Suita, Japan
- Department of Degenerative Neurological Diseases, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Taro Ishiguro
- Department of Degenerative Neurological Diseases, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
- Department of Neurology and Neurological Science, Tokyo Medical and Dental University, Tokyo, Japan
| | - Daisaku Ozawa
- Department of Neurology, Kindai University Faculty of Medicine, Osaka-Sayama, Japan
- Department of Neurotherapeutics, Osaka University Graduate School of Medicine, Suita, Japan
| | - Hayato Ito
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| | - Toshihiko Sugiki
- Laboratory of Molecular Biophysics, Institute for Protein Research, Osaka University, Osaka, Japan
| | - Asako Murata
- Department of Regulatory Bioorganic Chemistry, The Institute of Scientific and28 Industrial Research, Osaka University, Osaka, Japan
| | - Akira Ishiguro
- Research Center for Micro-nano Technology, Hosei University, Tokyo, Japan
| | - Tania Gendron
- Department of Neuroscience, Mayo Clinic, Jacksonville, United States
| | - Kohji Mori
- Department of Psychiatry, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Eiichi Tokuda
- Department of Chemistry, Keio University, Kanagawa, Japan
| | - Tomoya Taminato
- Department of Neurology, Kindai University Faculty of Medicine, Osaka-Sayama, Japan
- Department of Neurotherapeutics, Osaka University Graduate School of Medicine, Suita, Japan
| | - Takuya Konno
- Department of Neurology, Clinical Neuroscience Branch, Brain Research Institute, Niigata University, Niigata, Japan
| | - Akihide Koyama
- Department of Neurology, Clinical Neuroscience Branch, Brain Research Institute, Niigata University, Niigata, Japan
| | - Yuya Kawabe
- Department of Psychiatry, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Toshihide Takeuchi
- Department of Neurotherapeutics, Osaka University Graduate School of Medicine, Suita, Japan
- Life Science Research Institute, Kindai University, Osaka, Japan
| | | | - Toshimichi Fujiwara
- Laboratory of Molecular Biophysics, Institute for Protein Research, Osaka University, Osaka, Japan
| | - Manabu Ikeda
- Department of Psychiatry, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Toshiki Mizuno
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hideki Mochizuki
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hidehiro Mizusawa
- Department of Neurology and Neurological Science, Tokyo Medical and Dental University, Tokyo, Japan
| | - Keiji Wada
- Department of Degenerative Neurological Diseases, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Kinya Ishikawa
- Department of Neurology and Neurological Science, Tokyo Medical and Dental University, Tokyo, Japan
| | - Osamu Onodera
- Department of Neurology, Clinical Neuroscience Branch, Brain Research Institute, Niigata University, Niigata, Japan
| | - Kazuhiko Nakatani
- Department of Regulatory Bioorganic Chemistry, The Institute of Scientific and28 Industrial Research, Osaka University, Osaka, Japan
| | | | - Hideki Taguchi
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
- Cell Biology Center, Institute of Innovative Research, Tokyo Institute of Technology, Kanagawa, Japan
| | - Yoshitaka Nagai
- Department of Neurology, Kindai University Faculty of Medicine, Osaka-Sayama, Japan
- Department of Neurotherapeutics, Osaka University Graduate School of Medicine, Suita, Japan
- Department of Degenerative Neurological Diseases, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
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42
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Alshalfie W, Fotouhi M, Ayoubi R, You Z, Southern K, McPherson PS, Laflamme C. The identification of high-performing antibodies for RNA-binding protein FUS for use in Western Blot, immunoprecipitation, and immunofluorescence. F1000Res 2023; 12:376. [PMID: 37384305 PMCID: PMC10293799 DOI: 10.12688/f1000research.133220.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/22/2023] [Indexed: 06/30/2023] Open
Abstract
RNA-binding protein Fused-in Sarcoma (FUS) plays an essential role in various cellular processes. Mutations in the C-terminal domain region, where the nuclear localization signal (NLS) is located, causes the redistribution of FUS from the nucleus to the cytoplasm. In neurons, neurotoxic aggregates are formed as a result, contributing to neurogenerative diseases. Well-characterized anti-FUS antibodies would enable the reproducibility of FUS research, thereby benefiting the scientific community. In this study, we characterized ten FUS commercial antibodies for Western Blot, immunoprecipitation, and immunofluorescence using a standardized experimental protocol based on comparing read-outs in knockout cell lines and isogenic parental controls. We identified many high-performing antibodies and encourage readers to use this report as a guide to select the most appropriate antibody for their specific needs.
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Affiliation(s)
- Walaa Alshalfie
- Department of Neurology and Neurosurgery, Structural Genomics Consortium, The Montreal Neurological Institute, McGill University, Montreal, Québec, H3A 2B4, Canada
| | - Maryam Fotouhi
- Department of Neurology and Neurosurgery, Structural Genomics Consortium, The Montreal Neurological Institute, McGill University, Montreal, Québec, H3A 2B4, Canada
| | - Riham Ayoubi
- Department of Neurology and Neurosurgery, Structural Genomics Consortium, The Montreal Neurological Institute, McGill University, Montreal, Québec, H3A 2B4, Canada
| | - Zhipeng You
- The Neuro’s Early Drug Discovery Unit (EDDU), Structural Genomics Consortium, McGill University, Montreal, Québec, H3A 2B4, Canada
| | - Kathleen Southern
- Department of Neurology and Neurosurgery, Structural Genomics Consortium, The Montreal Neurological Institute, McGill University, Montreal, Québec, H3A 2B4, Canada
| | - Peter S. McPherson
- Department of Neurology and Neurosurgery, Structural Genomics Consortium, The Montreal Neurological Institute, McGill University, Montreal, Québec, H3A 2B4, Canada
| | - Carl Laflamme
- Department of Neurology and Neurosurgery, Structural Genomics Consortium, The Montreal Neurological Institute, McGill University, Montreal, Québec, H3A 2B4, Canada
| | - NeuroSGC/YCharOS/EDDU collaborative group
- Department of Neurology and Neurosurgery, Structural Genomics Consortium, The Montreal Neurological Institute, McGill University, Montreal, Québec, H3A 2B4, Canada
- The Neuro’s Early Drug Discovery Unit (EDDU), Structural Genomics Consortium, McGill University, Montreal, Québec, H3A 2B4, Canada
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43
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Kandhavivorn W, Glaß H, Herrmannsdörfer T, Böckers TM, Uhlarz M, Gronemann J, Funk RHW, Pietzsch J, Pal A, Hermann A. Restoring Axonal Organelle Motility and Regeneration in Cultured FUS-ALS Motoneurons through Magnetic Field Stimulation Suggests an Alternative Therapeutic Approach. Cells 2023; 12:1502. [PMID: 37296623 PMCID: PMC10252208 DOI: 10.3390/cells12111502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/17/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a devastating motoneuron disease characterized by sustained loss of neuromuscular junctions, degenerating corticospinal motoneurons and rapidly progressing muscle paralysis. Motoneurons have unique features, essentially a highly polarized, lengthy architecture of axons, posing a considerable challenge for maintaining long-range trafficking routes for organelles, cargo, mRNA and secretion with a high energy effort to serve crucial neuronal functions. Impaired intracellular pathways implicated in ALS pathology comprise RNA metabolism, cytoplasmic protein aggregation, cytoskeletal integrity for organelle trafficking and maintenance of mitochondrial morphology and function, cumulatively leading to neurodegeneration. Current drug treatments only have marginal effects on survival, thereby calling for alternative ALS therapies. Exposure to magnetic fields, e.g., transcranial magnetic stimulations (TMS) on the central nervous system (CNS), has been broadly explored over the past 20 years to investigate and improve physical and mental activities through stimulated excitability as well as neuronal plasticity. However, studies of magnetic treatments on the peripheral nervous system are still scarce. Thus, we investigated the therapeutic potential of low frequency alternating current magnetic fields on cultured spinal motoneurons derived from induced pluripotent stem cells of FUS-ALS patients and healthy persons. We report a remarkable restoration induced by magnetic stimulation on axonal trafficking of mitochondria and lysosomes and axonal regenerative sprouting after axotomy in FUS-ALS in vitro without obvious harmful effects on diseased and healthy neurons. These beneficial effects seem to derive from improved microtubule integrity. Thus, our study suggests the therapeutic potential of magnetic stimulations in ALS, which awaits further exploration and validation in future long-term in vivo studies.
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Affiliation(s)
- Wonphorn Kandhavivorn
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany; (W.K.); (T.H.); (M.U.); (J.G.)
- Institute of Anatomy, Technische Universität Dresden, D-01307 Dresden, Germany
| | - Hannes Glaß
- Division for Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, D-01307 Dresden, Germany;
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, D-18147 Rostock, Germany
| | - Thomas Herrmannsdörfer
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany; (W.K.); (T.H.); (M.U.); (J.G.)
| | - Tobias M. Böckers
- Institute of Anatomy and Cell Biology, University of Ulm, D-89081 Ulm, Germany;
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE) Ulm, D-89081 Ulm, Germany
| | - Marc Uhlarz
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany; (W.K.); (T.H.); (M.U.); (J.G.)
| | - Jonas Gronemann
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany; (W.K.); (T.H.); (M.U.); (J.G.)
| | - Richard H. W. Funk
- Institute of Anatomy, Technische Universität Dresden, D-01307 Dresden, Germany
- Dresden International University, D-01067 Dresden, Germany
| | - Jens Pietzsch
- Department of Radiopharmaceutical and Chemical Biology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
- Faculty of Chemistry and Food Chemistry, School of Science, Technische Universität Dresden, D-01069 Dresden, Germany
| | - Arun Pal
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany; (W.K.); (T.H.); (M.U.); (J.G.)
- Division for Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, D-01307 Dresden, Germany;
| | - Andreas Hermann
- Division for Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, D-01307 Dresden, Germany;
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, D-18147 Rostock, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE) Rostock/Greifswald, D-18147 Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, D-18147 Rostock, Germany
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Mukhamedyarov MA, Khabibrakhmanov AN, Khuzakhmetova VF, Giniatullin AR, Zakirjanova GF, Zhilyakov NV, Mukhutdinova KA, Samigullin DV, Grigoryev PN, Zakharov AV, Zefirov AL, Petrov AM. Early Alterations in Structural and Functional Properties in the Neuromuscular Junctions of Mutant FUS Mice. Int J Mol Sci 2023; 24:9022. [PMID: 37240370 PMCID: PMC10218837 DOI: 10.3390/ijms24109022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/16/2023] [Accepted: 05/18/2023] [Indexed: 05/28/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is manifested as skeletal muscle denervation, loss of motor neurons and finally severe respiratory failure. Mutations of RNA-binding protein FUS are one of the common genetic reasons of ALS accompanied by a 'dying back' type of degeneration. Using fluorescent approaches and microelectrode recordings, the early structural and functional alterations in diaphragm neuromuscular junctions (NMJs) were studied in mutant FUS mice at the pre-onset stage. Lipid peroxidation and decreased staining with a lipid raft marker were found in the mutant mice. Despite the preservation of the end-plate structure, immunolabeling revealed an increase in levels of presynaptic proteins, SNAP-25 and synapsin 1. The latter can restrain Ca2+-dependent synaptic vesicle mobilization. Indeed, neurotransmitter release upon intense nerve stimulation and its recovery after tetanus and compensatory synaptic vesicle endocytosis were markedly depressed in FUS mice. There was a trend to attenuation of axonal [Ca2+]in increase upon nerve stimulation at 20 Hz. However, no changes in neurotransmitter release and the intraterminal Ca2+ transient in response to low frequency stimulation or in quantal content and the synchrony of neurotransmitter release at low levels of external Ca2+ were detected. At a later stage, shrinking and fragmentation of end plates together with a decrease in presynaptic protein expression and disturbance of the neurotransmitter release timing occurred. Overall, suppression of synaptic vesicle exo-endocytosis upon intense activity probably due to alterations in membrane properties, synapsin 1 levels and Ca2+ kinetics could be an early sign of nascent NMJ pathology, which leads to neuromuscular contact disorganization.
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Affiliation(s)
- Marat A. Mukhamedyarov
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
| | - Aydar N. Khabibrakhmanov
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
| | - Venera F. Khuzakhmetova
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center ‘‘Kazan Scientific Center of RAS”, 2/31 Lobachevsky St., P.O. Box 30, Kazan 420111, Russia (N.V.Z.)
| | - Arthur R. Giniatullin
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center ‘‘Kazan Scientific Center of RAS”, 2/31 Lobachevsky St., P.O. Box 30, Kazan 420111, Russia (N.V.Z.)
| | - Guzalia F. Zakirjanova
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center ‘‘Kazan Scientific Center of RAS”, 2/31 Lobachevsky St., P.O. Box 30, Kazan 420111, Russia (N.V.Z.)
| | - Nikita V. Zhilyakov
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center ‘‘Kazan Scientific Center of RAS”, 2/31 Lobachevsky St., P.O. Box 30, Kazan 420111, Russia (N.V.Z.)
| | - Kamilla A. Mukhutdinova
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
| | - Dmitry V. Samigullin
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center ‘‘Kazan Scientific Center of RAS”, 2/31 Lobachevsky St., P.O. Box 30, Kazan 420111, Russia (N.V.Z.)
- Department of Radiophotonics and Microwave Technologies, Kazan National Research Technical University, 10 K. Marx St., Kazan 420111, Russia
| | - Pavel N. Grigoryev
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
| | - Andrey V. Zakharov
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
- Laboratory of Neurobiology, Kazan Federal University, Kazan 420008, Russia
| | - Andrey L. Zefirov
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
| | - Alexey M. Petrov
- Department of Normal Physiology, Kazan State Medial University, 49 Butlerova St., Kazan 420012, Russia; (M.A.M.)
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center ‘‘Kazan Scientific Center of RAS”, 2/31 Lobachevsky St., P.O. Box 30, Kazan 420111, Russia (N.V.Z.)
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Wang JY, Ma GM, Tang XQ, Shi QL, Yu MC, Lou MM, He KW, Wang WY. Brain region-specific synaptic function of FUS underlies the FTLD-linked behavioural disinhibition. Brain 2023; 146:2107-2119. [PMID: 36345573 DOI: 10.1093/brain/awac411] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 08/10/2022] [Accepted: 09/19/2022] [Indexed: 11/09/2022] Open
Abstract
Synaptic dysfunction is one of the earliest pathological processes that contribute to the development of many neurological disorders, including Alzheimer's disease and frontotemporal lobar degeneration. However, the synaptic function of many disease-causative genes and their contribution to the pathogenesis of the related diseases remain unclear. In this study, we investigated the synaptic role of fused in sarcoma, an RNA-binding protein linked to frontotemporal lobar degeneration and amyotrophic lateral sclerosis, and its potential pathological role in frontotemporal lobar degeneration using pyramidal neuron-specific conditional knockout mice (FuscKO). We found that FUS regulates the expression of many genes associated with synaptic function in a hippocampal subregion-specific manner, concomitant with the frontotemporal lobar degeneration-linked behavioural disinhibition. Electrophysiological study and molecular pathway analyses further reveal that fused in sarcoma differentially regulates synaptic and neuronal properties in the ventral hippocampus and medial prefrontal cortex, respectively. Moreover, fused in sarcoma selectively modulates the ventral hippocampus-prefrontal cortex projection, which is known to mediate the anxiety-like behaviour. Our findings unveil the brain region- and synapse-specific role of fused in sarcoma, whose impairment might lead to the emotional symptoms associated with frontotemporal lobar degeneration.
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Affiliation(s)
- Jun-Ying Wang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Shanghai 201210, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guo-Ming Ma
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Shanghai 201210, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiao-Qiang Tang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Shanghai 201210, China
| | - Qi-Li Shi
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Shanghai 201210, China
| | - Ming-Can Yu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Shanghai 201210, China
| | - Min-Min Lou
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Shanghai 201210, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kai-Wen He
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Shanghai 201210, China
| | - Wen-Yuan Wang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Shanghai 201210, China
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
- Animal Center of Zoology, Institute of Neuroscience, Kunming Medical University, Kunming 650500, China
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46
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Xiong J, Zhou Q. The lncRNA HOTAIR attenuates pyroptosis of diabetic cardiomyocytes by recruiting FUS to regulate SIRT3 expression. Kaohsiung J Med Sci 2023; 39:458-467. [PMID: 37073806 DOI: 10.1002/kjm2.12676] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 01/10/2023] [Accepted: 01/31/2023] [Indexed: 04/20/2023] Open
Abstract
Diabetic cardiomyopathy (DCM) is a serious cardiovascular complication of diabetes that severely affects the quality of life of diabetic patients. Long noncoding RNAs (lncRNAs) play important roles in the pathogenesis of DCM. However, the role of the lncRNA homeobox transcript antisense RNA (HOTAIR) in the progression of DCM remains unclear. The present study aimed to investigate the role of HOTAIR in high glucose (HG)-induced pyroptosis in cardiomyocytes. The expression of the lncRNA HOTAIR, FUS, and SIRT3 in H9C2 cardiomyocytes was detected by RT-qPCR. Western blotting was used to evaluate the expression of FUS and SIRT3 as well as that of pyroptosis- and inflammation-related proteins. RT-qPCR and ELISA were used to determine the expression and secretion of IL-1β and IL-18. RNA pulldown and RIP experiments were used to validate the binding relationship among HOTAIR, FUS, and SIRT3. Flow cytometry was performed to detect pyroptosis. HG induced pyroptosis and elevated the expression of proteins associated with pyroptosis and inflammation (NLRP3, GSDMD-N, cleaved caspase-1, IL-1β, and IL-18) in cardiomyocytes. HOTAIR and SIRT3 levels were decreased in HG-exposed H9C2 cells. Additionally, overexpression of HOTAIR inhibited the HG-induced pyroptosis and inflammatory response in cardiomyocytes. HOTAIR upregulated SIRT3 expression in H9C2 cells by targeting FUS. Moreover, SIRT3 upregulation suppressed HG-mediated pyroptosis of cardiomyocytes. Notably, SIRT3 depletion reversed the inhibitory effect of HOTAIR on HG-triggered pyroptosis in cardiomyocytes. Our research indicates that HOTAIR alleviates pyroptosis in diabetic cardiomyocytes through the FUS/SIRT3 axis, providing a potential marker for the diagnosis and treatment of DCM.
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Affiliation(s)
- Jing Xiong
- Department of Endocrinology, Third Xiangya Hospital, Changsha, Hunan Province, People's Republic of China
| | - Qing Zhou
- Department of Cardiovascular Surgery, Hunan Provincial People's Hospital, Changsha, Hunan Province, People's Republic of China
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Giannattasio T, Testa E, Palombo R, Chellini L, Franceschini F, Crevenna Á, Petkov PM, Paronetto MP, Barchi M. The RNA-binding protein FUS/TLS interacts with SPO11 and PRDM9 and localize at meiotic recombination hotspots. Cell Mol Life Sci 2023; 80:107. [PMID: 36967403 PMCID: PMC10040399 DOI: 10.1007/s00018-023-04744-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/29/2023]
Abstract
In mammals, meiotic recombination is initiated by the introduction of DNA double strand breaks (DSBs) into narrow segments of the genome, defined as hotspots, which is carried out by the SPO11/TOPOVIBL complex. A major player in the specification of hotspots is PRDM9, a histone methyltransferase that, following sequence-specific DNA binding, generates trimethylation on lysine 4 (H3K4me3) and lysine 36 (H3K36me3) of histone H3, thus defining the hotspots. PRDM9 activity is key to successful meiosis, since in its absence DSBs are redirected to functional sites and synapsis between homologous chromosomes fails. One protein factor recently implicated in guiding PRDM9 activity at hotspots is EWS, a member of the FET family of proteins that also includes TAF15 and FUS/TLS. Here, we demonstrate that FUS/TLS partially colocalizes with PRDM9 on the meiotic chromosome axes, marked by the synaptonemal complex component SYCP3, and physically interacts with PRDM9. Furthermore, we show that FUS/TLS also interacts with REC114, one of the axis-bound SPO11-auxiliary factors essential for DSB formation. This finding suggests that FUS/TLS is a component of the protein complex that promotes the initiation of meiotic recombination. Accordingly, we document that FUS/TLS coimmunoprecipitates with SPO11 in vitro and in vivo. The interaction occurs with both SPO11β and SPO11α splice isoforms, which are believed to play distinct functions in the formation of DSBs in autosomes and male sex chromosomes, respectively. Finally, using chromatin immunoprecipitation experiments, we show that FUS/TLS is localized at H3K4me3-marked hotspots in autosomes and in the pseudo-autosomal region, the site of genetic exchange between the XY chromosomes.
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Affiliation(s)
- Teresa Giannattasio
- University of Rome "Tor Vergata", Section of Anatomy, Via Montpellier, 1, 00133, Rome, Italy
| | - Erika Testa
- University of Rome "Tor Vergata", Section of Anatomy, Via Montpellier, 1, 00133, Rome, Italy
| | - Ramona Palombo
- Laboratory of Molecular and Cellular Neurobiology, Fondazione Santa Lucia, CERC, 00143, Rome, Italy
| | - Lidia Chellini
- Laboratory of Molecular and Cellular Neurobiology, Fondazione Santa Lucia, CERC, 00143, Rome, Italy
| | - Flavia Franceschini
- University of Rome "Tor Vergata", Section of Anatomy, Via Montpellier, 1, 00133, Rome, Italy
| | - Álvaro Crevenna
- European Molecular Biology Laboratory, Neurobiology and Epigenetics Unit, Monterotondo, Italy
| | | | - Maria Paola Paronetto
- Laboratory of Molecular and Cellular Neurobiology, Fondazione Santa Lucia, CERC, 00143, Rome, Italy.
- Department of Movement, Human and Health Sciences, University of Rome Foro Italico, Piazza Lauro de Bosis 6, 00135, Rome, Italy.
| | - Marco Barchi
- University of Rome "Tor Vergata", Section of Anatomy, Via Montpellier, 1, 00133, Rome, Italy.
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48
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Rooper LM, Gagan J, Bishop JA. A Low Grade Nasopharyngeal sarcoma With FUS::NACC1 Fusion and Immunohistochemical Evidence of Epithelial Differentiation: Expanding the Clinicopathologic Spectrum of an Emerging Entity. Head Neck Pathol 2023; 17:253-258. [PMID: 36169794 PMCID: PMC10063715 DOI: 10.1007/s12105-022-01488-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/09/2022] [Accepted: 08/11/2022] [Indexed: 10/14/2022]
Abstract
BACKGROUND RNA sequencing of unclassified soft tissue tumors has allowed for definition of multiple new entities. Antonescu et al. recently reported three case of low grade sarcoma with recurrent EWSR1/FUS::NACC1 fusion and distinctive storiform architecture that were suggestive of a novel tumor type. METHODS Here, we present a case of an additional sarcoma with FUS::NACC1 fusion that arose in the head and neck and showed immunohistochemical evidence of epithelial differentiation. RESULTS A 41 year old woman presented with throat and inner ear pain and was found to have a nasopharyngeal mass. Biopsy highlighted a spindle cell neoplasm composed of bland cells arranged in a tight storiform pattern. On immunohistochemistry, the tumor cells were focally positive for S100 in a fibrillary pattern but were also positive for high molecular weight cytokeratin, p40, and CD34. RNA sequencing demonstrated a FUS::NACC1 fusion. The patient remains free of disease 2 years after surgical resection. CONCLUSION These findings confirm the previously-reported recurrent storiform histology in sarcomas with EWSR1/FUS::NACC1 fusion while simultaneously expanding the immunohistochemical spectrum of this entity to include overt epithelial differentiation. With involvement of a head and neck mucosal site, these findings also expand the differential diagnosis to include multiple mesenchymal entities including spindle cell squamous cell carcinoma. Further recognition of this emerging entity via expanded RNA sequencing panels will be necessary to determine the prevalence of these unique features.
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Affiliation(s)
- Lisa M Rooper
- Department of Pathology, The Johns Hopkins University School of Medicine, 401 N. Broadway, 2242, 21231, Weinberg, Baltimore, MD, USA.
- Department of Oncology, The Johns Hopkins University School of Medicine, 401 N. Broadway, 2242, 21231, Weinberg, Baltimore, MD, USA.
| | - Jeffrey Gagan
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Justin A Bishop
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
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49
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Szewczyk B, Günther R, Japtok J, Frech MJ, Naumann M, Lee HO, Hermann A. FUS ALS neurons activate major stress pathways and reduce translation as an early protective mechanism against neurodegeneration. Cell Rep 2023; 42:112025. [PMID: 36696267 DOI: 10.1016/j.celrep.2023.112025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 11/02/2022] [Accepted: 01/06/2023] [Indexed: 01/26/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disorder causing progressive loss of motor neurons. Mutations in Fused in sarcoma (FUS) leading to its cytoplasmic mislocalization cause a subset of ALS. Under stress, mutant FUS localizes to stress granules (SGs)-cytoplasmic condensates composed of RNA and various proteins. Aberrant dynamics of SGs is linked to the pathology of ALS. Here, using motor neurons (MNs) derived from human induced pluripotent stem cells, we show that, in mutant FUS, MN dynamics of SGs is disturbed. Additionally, heat-shock response (HSR) and integrated stress response (ISR) involved in the regulation of SGs are upregulated in mutant MNs. HSR activation correlates with the amount of cytoplasmic FUS mislocalization. While inhibition of SG formation, translation, or ISR does not influence survival of FUS ALS neurons, proteotoxicity that cannot be compensated with the activation of stress pathways is the main driver of neurodegeneration in early FUS ALS.
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Affiliation(s)
- Barbara Szewczyk
- Translational Neurodegeneration Section "Albrecht Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - René Günther
- Department of Neurology, Technische Universität Dresden, Dresden, Germany; Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE) Dresden, Dresden, Germany
| | - Julia Japtok
- Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Moritz J Frech
- Translational Neurodegeneration Section "Albrecht Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Marcel Naumann
- Translational Neurodegeneration Section "Albrecht Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Hyun O Lee
- Department of Biochemistry, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Andreas Hermann
- Translational Neurodegeneration Section "Albrecht Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany; Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE) Rostock/Greifswald, Rostock, Germany; Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, Rostock, Germany.
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Megat S, Mora N, Sanogo J, Roman O, Catanese A, Alami NO, Freischmidt A, Mingaj X, De Calbiac H, Muratet F, Dirrig-Grosch S, Dieterle S, Van Bakel N, Müller K, Sieverding K, Weishaupt J, Andersen PM, Weber M, Neuwirth C, Margelisch M, Sommacal A, Van Eijk KR, Veldink JH, Lautrette G, Couratier P, Camuzat A, Le Ber I, Grassano M, Chio A, Boeckers T, Ludolph AC, Roselli F, Yilmazer-Hanke D, Millecamps S, Kabashi E, Storkebaum E, Sellier C, Dupuis L. Integrative genetic analysis illuminates ALS heritability and identifies risk genes. Nat Commun 2023; 14:342. [PMID: 36670122 PMCID: PMC9860017 DOI: 10.1038/s41467-022-35724-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 12/21/2022] [Indexed: 01/22/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) has substantial heritability, in part shared with fronto-temporal dementia (FTD). We show that ALS heritability is enriched in splicing variants and in binding sites of 6 RNA-binding proteins including TDP-43 and FUS. A transcriptome wide association study (TWAS) identified 6 loci associated with ALS, including in NUP50 encoding for the nucleopore basket protein NUP50. Independently, rare variants in NUP50 were associated with ALS risk (P = 3.71.10-03; odds ratio = 3.29; 95%CI, 1.37 to 7.87) in a cohort of 9,390 ALS/FTD patients and 4,594 controls. Cells from one patient carrying a NUP50 frameshift mutation displayed a decreased level of NUP50. Loss of NUP50 leads to death of cultured neurons, and motor defects in Drosophila and zebrafish. Thus, our study identifies alterations in splicing in neurons as critical in ALS and provides genetic evidence linking nuclear pore defects to ALS.
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Affiliation(s)
- Salim Megat
- Université de Strasbourg, Inserm, Mécanismes centraux et périphériques de la neurodégénérescence, UMR-S1118, Centre de Recherches en Biomédecine, Strasbourg, France.
| | - Natalia Mora
- Department of Molecular Neurobiology, Donders Institute for Brain, Cognition and Behaviour and Faculty of Science, Radboud University, Nijmegen, Netherlands
| | - Jason Sanogo
- Université de Strasbourg, Inserm, Mécanismes centraux et périphériques de la neurodégénérescence, UMR-S1118, Centre de Recherches en Biomédecine, Strasbourg, France
| | - Olga Roman
- Université de Strasbourg, Inserm, Mécanismes centraux et périphériques de la neurodégénérescence, UMR-S1118, Centre de Recherches en Biomédecine, Strasbourg, France
| | - Alberto Catanese
- Institute of Anatomy and Cell Biology, Ulm University, Ulm, Germany
- German Center for Neurodegenerative Diseases (DZNE) Ulm, Ulm, Germany
| | - Najwa Ouali Alami
- Clinical Neuroanatomy, Department of Neurology, Ulm University, Ulm, Germany
| | - Axel Freischmidt
- German Center for Neurodegenerative Diseases (DZNE) Ulm, Ulm, Germany
- Department of Neurology, Ulm University, Ulm, Germany
| | - Xhuljana Mingaj
- Laboratory of Translational Research for Neurological Disorders, Imagine Institute, Université de Paris, INSERM UMR 1163, 75015, Paris, France
| | - Hortense De Calbiac
- Laboratory of Translational Research for Neurological Disorders, Imagine Institute, Université de Paris, INSERM UMR 1163, 75015, Paris, France
| | - François Muratet
- Sorbonne Université, Institut du Cerveau - Paris Brain Institute - ICM, Inserm, CNRS, APHP, Hôpital de la Pitié Salpêtrière, Paris, France
| | - Sylvie Dirrig-Grosch
- Université de Strasbourg, Inserm, Mécanismes centraux et périphériques de la neurodégénérescence, UMR-S1118, Centre de Recherches en Biomédecine, Strasbourg, France
| | - Stéphane Dieterle
- Université de Strasbourg, Inserm, Mécanismes centraux et périphériques de la neurodégénérescence, UMR-S1118, Centre de Recherches en Biomédecine, Strasbourg, France
| | - Nick Van Bakel
- Department of Molecular Neurobiology, Donders Institute for Brain, Cognition and Behaviour and Faculty of Science, Radboud University, Nijmegen, Netherlands
| | - Kathrin Müller
- German Center for Neurodegenerative Diseases (DZNE) Ulm, Ulm, Germany
- Institute of Human Genetics, Ulm University, Ulm, Germany
| | | | - Jochen Weishaupt
- Division for Neurodegenerative Diseases, Neurology Department, University Medicine Mannheim, Heidelberg University, Mannheim, Germany
| | | | - Markus Weber
- Neuromuscular Disease Unit/ALS Clinic, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Christoph Neuwirth
- Neuromuscular Disease Unit/ALS Clinic, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Markus Margelisch
- Institute for Pathology, Kanstonsspital St. Gallen, St. Gallen, Switzerland
| | - Andreas Sommacal
- Institute for Pathology, Kanstonsspital St. Gallen, St. Gallen, Switzerland
| | - Kristel R Van Eijk
- Department of Neurology, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands
| | - Jan H Veldink
- Department of Neurology, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands
| | - Géraldine Lautrette
- Service de Neurologie, Centre de Référence SLA et autres maladies du neurone moteur, CHU Dupuytren 1, Limoges, France
| | - Philippe Couratier
- Service de Neurologie, Centre de Référence SLA et autres maladies du neurone moteur, CHU Dupuytren 1, Limoges, France
| | - Agnès Camuzat
- Sorbonne Université, Institut du Cerveau - Paris Brain Institute - ICM, Inserm, CNRS, APHP, Hôpital de la Pitié Salpêtrière, Paris, France
| | - Isabelle Le Ber
- Sorbonne Université, Institut du Cerveau - Paris Brain Institute - ICM, Inserm, CNRS, APHP, Hôpital de la Pitié Salpêtrière, Paris, France
| | - Maurizio Grassano
- ALS Center "Rita Levi Montalcini" Department of Neuroscience, University of Turin, Turin, Italy
| | - Adriano Chio
- ALS Center "Rita Levi Montalcini" Department of Neuroscience, University of Turin, Turin, Italy
| | - Tobias Boeckers
- Institute of Anatomy and Cell Biology, Ulm University, Ulm, Germany
- German Center for Neurodegenerative Diseases (DZNE) Ulm, Ulm, Germany
| | - Albert C Ludolph
- German Center for Neurodegenerative Diseases (DZNE) Ulm, Ulm, Germany
- Department of Neurology, Ulm University, Ulm, Germany
| | - Francesco Roselli
- German Center for Neurodegenerative Diseases (DZNE) Ulm, Ulm, Germany
- Department of Neurology, Ulm University, Ulm, Germany
| | | | - Stéphanie Millecamps
- Sorbonne Université, Institut du Cerveau - Paris Brain Institute - ICM, Inserm, CNRS, APHP, Hôpital de la Pitié Salpêtrière, Paris, France
| | - Edor Kabashi
- Laboratory of Translational Research for Neurological Disorders, Imagine Institute, Université de Paris, INSERM UMR 1163, 75015, Paris, France
| | - Erik Storkebaum
- Department of Molecular Neurobiology, Donders Institute for Brain, Cognition and Behaviour and Faculty of Science, Radboud University, Nijmegen, Netherlands
| | - Chantal Sellier
- Université de Strasbourg, Inserm, Mécanismes centraux et périphériques de la neurodégénérescence, UMR-S1118, Centre de Recherches en Biomédecine, Strasbourg, France
| | - Luc Dupuis
- Université de Strasbourg, Inserm, Mécanismes centraux et périphériques de la neurodégénérescence, UMR-S1118, Centre de Recherches en Biomédecine, Strasbourg, France.
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