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Chitiprolu M, Jagow C, Tremblay V, Bondy-Chorney E, Paris G, Savard A, Palidwor G, Barry FA, Zinman L, Keith J, Rogaeva E, Robertson J, Lavallée-Adam M, Woulfe J, Couture JF, Côté J, Gibbings D. A complex of C9ORF72 and p62 uses arginine methylation to eliminate stress granules by autophagy. Nat Commun 2018; 9:2794. [PMID: 30022074 PMCID: PMC6052026 DOI: 10.1038/s41467-018-05273-7] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 06/21/2018] [Indexed: 12/12/2022] Open
Abstract
Mutations in proteins like FUS which cause Amyotrophic Lateral Sclerosis (ALS) result in the aberrant formation of stress granules while ALS-linked mutations in other proteins impede elimination of stress granules. Repeat expansions in C9ORF72, the major cause of ALS, reduce C9ORF72 levels but how this impacts stress granules is uncertain. Here, we demonstrate that C9ORF72 associates with the autophagy receptor p62 and controls elimination of stress granules by autophagy. This requires p62 to associate via the Tudor protein SMN with proteins, including FUS, that are symmetrically methylated on arginines. Mice lacking p62 accumulate arginine-methylated proteins and alterations in FUS-dependent splicing. Patients with C9ORF72 repeat expansions accumulate symmetric arginine dimethylated proteins which co-localize with p62. This suggests that C9ORF72 initiates a cascade of ALS-linked proteins (C9ORF72, p62, SMN, FUS) to recognize stress granules for degradation by autophagy and hallmarks of a defect in this process are observable in ALS patients. Many Amyotrophic Lateral Sclerosis (ALS)-linked mutations cause accumulation of stress granules, and most ALS cases are caused by repeat expansions in C9ORF72. Here the authors show that C9ORF72 and the autophagy receptor p62 interact to associate with proteins symmetrically dimethylated on arginines such as FUS, to eliminate stress granules by autophagy.
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Affiliation(s)
- Maneka Chitiprolu
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada.,Ottawa Institute of Systems Biology, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada
| | - Chantal Jagow
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada.,Ottawa Institute of Systems Biology, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada
| | - Veronique Tremblay
- Ottawa Institute of Systems Biology, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada.,Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada
| | - Emma Bondy-Chorney
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada
| | - Geneviève Paris
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada
| | - Alexandre Savard
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada.,Ottawa Institute of Systems Biology, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada
| | - Gareth Palidwor
- Ottawa Bioinformatics Core Facility, Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, Ontario, K1H 8L6, Canada
| | - Francesca A Barry
- Ottawa Institute of Systems Biology, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada.,Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada
| | - Lorne Zinman
- Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, Toronto, Ontario, M4N 3M5, Canada
| | - Julia Keith
- Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, Toronto, Ontario, M4N 3M5, Canada
| | - Ekaterina Rogaeva
- Tanz Centre for Research in Neurodegenerative Disease, University of Toronto, Krembil Discovery Tower, 60 Leonard Avenue, Toronto, Ontario, M5T 2S8, Canada
| | - Janice Robertson
- Tanz Centre for Research in Neurodegenerative Disease, University of Toronto, Krembil Discovery Tower, 60 Leonard Avenue, Toronto, Ontario, M5T 2S8, Canada
| | - Mathieu Lavallée-Adam
- Ottawa Institute of Systems Biology, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada.,Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada
| | - John Woulfe
- Department of Pathology and Laboratory Medicine, University of Ottawa, 501 Smyth Road, Ottawa, Ontario, K1H 8L6, Canada
| | - Jean-François Couture
- Ottawa Institute of Systems Biology, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada.,Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada
| | - Jocelyn Côté
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada
| | - Derrick Gibbings
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada. .,Ottawa Institute of Systems Biology, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, K1H 8M5, Canada.
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Guo H, Chitiprolu M, Roncevic L, Javalet C, Hemming FJ, Trung MT, Meng L, Latreille E, Tanese de Souza C, McCulloch D, Baldwin RM, Auer R, Côté J, Russell RC, Sadoul R, Gibbings D. Atg5 Disassociates the V 1V 0-ATPase to Promote Exosome Production and Tumor Metastasis Independent of Canonical Macroautophagy. Dev Cell 2018; 43:716-730.e7. [PMID: 29257951 DOI: 10.1016/j.devcel.2017.11.018] [Citation(s) in RCA: 180] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 10/29/2017] [Accepted: 11/20/2017] [Indexed: 01/08/2023]
Abstract
Autophagy and autophagy-related genes (Atg) have been attributed prominent roles in tumorigenesis, tumor growth, and metastasis. Extracellular vesicles called exosomes are also implicated in cancer metastasis. Here, we demonstrate that exosome production is strongly reduced in cells lacking Atg5 and Atg16L1, but this is independent of Atg7 and canonical autophagy. Atg5 specifically decreases acidification of late endosomes where exosomes are produced, disrupting the acidifying V1V0-ATPase by removing a regulatory component, ATP6V1E1, into exosomes. The effect of Atg5 on exosome production promotes the migration and in vivo metastasis of orthotopic breast cancer cells. These findings uncover mechanisms controlling exosome release and identify means by which autophagy-related genes can contribute to metastasis in autophagy-independent pathways.
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Affiliation(s)
- Huishan Guo
- Department of Cellular and Molecular Medicine, University of Ottawa, 3131 Roger Guindon Hall, 451 Smyth Road, Ottawa K1H 8M5, Canada
| | - Maneka Chitiprolu
- Department of Cellular and Molecular Medicine, University of Ottawa, 3131 Roger Guindon Hall, 451 Smyth Road, Ottawa K1H 8M5, Canada
| | - Luc Roncevic
- Department of Cellular and Molecular Medicine, University of Ottawa, 3131 Roger Guindon Hall, 451 Smyth Road, Ottawa K1H 8M5, Canada
| | - Charlotte Javalet
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1216, 38042 Grenoble, France; Université Grenoble Alpes, Institut des Neurosciences, 38042 Grenoble, France
| | - Fiona J Hemming
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1216, 38042 Grenoble, France; Université Grenoble Alpes, Institut des Neurosciences, 38042 Grenoble, France
| | - My Tran Trung
- Department of Cellular and Molecular Medicine, University of Ottawa, 3131 Roger Guindon Hall, 451 Smyth Road, Ottawa K1H 8M5, Canada
| | - Lingrui Meng
- Department of Cellular and Molecular Medicine, University of Ottawa, 3131 Roger Guindon Hall, 451 Smyth Road, Ottawa K1H 8M5, Canada
| | - Elyse Latreille
- Department of Cellular and Molecular Medicine, University of Ottawa, 3131 Roger Guindon Hall, 451 Smyth Road, Ottawa K1H 8M5, Canada
| | | | - Danielle McCulloch
- Department of Cellular and Molecular Medicine, University of Ottawa, 3131 Roger Guindon Hall, 451 Smyth Road, Ottawa K1H 8M5, Canada
| | - R Mitchell Baldwin
- Department of Cellular and Molecular Medicine, University of Ottawa, 3131 Roger Guindon Hall, 451 Smyth Road, Ottawa K1H 8M5, Canada
| | - Rebecca Auer
- Ottawa Hospital Research Institute, Ottawa K1H 8L6, Canada
| | - Jocelyn Côté
- Department of Cellular and Molecular Medicine, University of Ottawa, 3131 Roger Guindon Hall, 451 Smyth Road, Ottawa K1H 8M5, Canada
| | - Ryan Charles Russell
- Department of Cellular and Molecular Medicine, University of Ottawa, 3131 Roger Guindon Hall, 451 Smyth Road, Ottawa K1H 8M5, Canada
| | - Rémy Sadoul
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1216, 38042 Grenoble, France; Université Grenoble Alpes, Institut des Neurosciences, 38042 Grenoble, France
| | - Derrick Gibbings
- Department of Cellular and Molecular Medicine, University of Ottawa, 3131 Roger Guindon Hall, 451 Smyth Road, Ottawa K1H 8M5, Canada; Ottawa Institute for System Biology, University of Ottawa, Ottawa K1H 8M5, Canada.
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Nathan AA, Tej MAC, Chitiprolu M, Rangan S, Mohan V, Harish R, Anand SB, Dixit M. Impaired glucose tolerance alters functional ability of peripheral blood-derived mononuclear cells in Asian Indian men. Diab Vasc Dis Res 2015; 12:13-22. [PMID: 25303939 DOI: 10.1177/1479164114551745] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
AIM To compare the adhesion, migration and endothelial differentiation potential of peripheral blood-derived mononuclear cells (PBMCs) obtained from drug-naive normal glucose tolerance (NGT) and impaired glucose tolerance (IGT) Asian Indian men. METHODS Based on the 75-g oral glucose tolerance test, 30 NGT and 31 IGT subjects were recruited into the study. PBMCs were isolated from fasting blood using histopaque density gradient centrifugation. Isolated PBMCs were analysed for their ability to adhere to extracellular matrices, incorporation into tubular structures formed by matured endothelial cells and differentiation into endothelial cells upon 7-day culture in endothelial-specific growth medium. RESULTS PBMCs obtained from IGT subjects exhibit poor adherence to fibronectin and reduced incorporation into tubular structures. Migration towards stromal cell-derived factor-1α (SDF-1α) in a trans-well filter assembly was also reduced for these cells. Semi-quantitative reverse transcription polymerase chain reaction (RT-PCR) analysis revealed decreased expression of CXCR4 and β2 integrin and increased expression of arginase II in IGT subjects. No differences were observed with regard to endothelial differentiation; however, cultured PBMCs of IGT subjects had decreased intracellular nitric oxide (NO) production. CONCLUSION In pre-diabetic, Asian Indian men, PBMCs exhibit defective migration and homing potential.
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Affiliation(s)
- Abel Arul Nathan
- Department of Biotechnology, Bhupat & Jyoti Mehta School of Biosciences and Bioengineering, Indian Institute of Technology Madras, Chennai, India
| | - Mallu Abhiram Charan Tej
- Department of Biotechnology, Bhupat & Jyoti Mehta School of Biosciences and Bioengineering, Indian Institute of Technology Madras, Chennai, India
| | - Maneka Chitiprolu
- Department of Biotechnology, Bhupat & Jyoti Mehta School of Biosciences and Bioengineering, Indian Institute of Technology Madras, Chennai, India
| | - Shreyas Rangan
- Department of Biotechnology, Bhupat & Jyoti Mehta School of Biosciences and Bioengineering, Indian Institute of Technology Madras, Chennai, India
| | - Viswanathan Mohan
- Department of Diabetology, Madras Diabetes Research Foundation (MDRF) and Dr Mohan's Diabetes Specialties Centre, Gopalapuram, Chennai, India
| | - Ranjani Harish
- Department of Diabetology, Madras Diabetes Research Foundation (MDRF) and Dr Mohan's Diabetes Specialties Centre, Gopalapuram, Chennai, India
| | - Setty B Anand
- Department of Genetic Engineering, Madurai Kamaraj University, Madurai, India
| | - Madhulika Dixit
- Department of Biotechnology, Bhupat & Jyoti Mehta School of Biosciences and Bioengineering, Indian Institute of Technology Madras, Chennai, India
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