1
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Crespo-Garcia S, Fournier F, Diaz-Marin R, Klier S, Ragusa D, Masaki L, Cagnone G, Blot G, Hafiane I, Dejda A, Rizk R, Juneau R, Buscarlet M, Chorfi S, Patel P, Beltran PJ, Joyal JS, Rezende FA, Hata M, Nguyen A, Sullivan L, Damiano J, Wilson AM, Mallette FA, David NE, Ghosh A, Tsuruda PR, Dananberg J, Sapieha P. Therapeutic targeting of cellular senescence in diabetic macular edema: preclinical and phase 1 trial results. Nat Med 2024; 30:443-454. [PMID: 38321220 DOI: 10.1038/s41591-024-02802-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 01/03/2024] [Indexed: 02/08/2024]
Abstract
Compromised vascular endothelial barrier function is a salient feature of diabetic complications such as sight-threatening diabetic macular edema (DME). Current standards of care for DME manage aspects of the disease, but require frequent intravitreal administration and are poorly effective in large subsets of patients. Here we provide evidence that an elevated burden of senescent cells in the retina triggers cardinal features of DME pathology and conduct an initial test of senolytic therapy in patients with DME. In cell culture models, sustained hyperglycemia provoked cellular senescence in subsets of vascular endothelial cells displaying perturbed transendothelial junctions associated with poor barrier function and leading to micro-inflammation. Pharmacological elimination of senescent cells in a mouse model of DME reduces diabetes-induced retinal vascular leakage and preserves retinal function. We then conducted a phase 1 single ascending dose safety study of UBX1325 (foselutoclax), a senolytic small-molecule inhibitor of BCL-xL, in patients with advanced DME for whom anti-vascular endothelial growth factor therapy was no longer considered beneficial. The primary objective of assessment of safety and tolerability of UBX1325 was achieved. Collectively, our data suggest that therapeutic targeting of senescent cells in the diabetic retina with a BCL-xL inhibitor may provide a long-lasting, disease-modifying intervention for DME. This hypothesis will need to be verified in larger clinical trials. ClinicalTrials.gov identifier: NCT04537884 .
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Affiliation(s)
- Sergio Crespo-Garcia
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
- École d'optométrie, University of Montreal, Montreal, Quebec, Canada
| | - Frédérik Fournier
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | - Roberto Diaz-Marin
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
- Department of Ophthalmology, Centre Universitaire d'Ophtalmologie (CUO-HMR) Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | - Sharon Klier
- UNITY Biotechnology, South San Francisco, CA, USA
| | - Derek Ragusa
- UNITY Biotechnology, South San Francisco, CA, USA
| | | | - Gael Cagnone
- Departments of Pediatrics Ophthalmology, and Pharmacology, Centre Hospitalier Universitaire Sainte Justine Research Center, Montreal, Quebec, Canada
| | - Guillaume Blot
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | - Ikhlas Hafiane
- Department of Ophthalmology, Centre Universitaire d'Ophtalmologie (CUO-HMR) Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | - Agnieszka Dejda
- Department of Ophthalmology, Centre Universitaire d'Ophtalmologie (CUO-HMR) Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | - Rana Rizk
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | - Rachel Juneau
- Department of Ophthalmology, Centre Universitaire d'Ophtalmologie (CUO-HMR) Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | - Manuel Buscarlet
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | - Sarah Chorfi
- Department of Ophthalmology, Centre Universitaire d'Ophtalmologie (CUO-HMR) Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | | | | | - Jean-Sebastien Joyal
- Departments of Pediatrics Ophthalmology, and Pharmacology, Centre Hospitalier Universitaire Sainte Justine Research Center, Montreal, Quebec, Canada
| | - Flavio A Rezende
- Department of Ophthalmology, Centre Universitaire d'Ophtalmologie (CUO-HMR) Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | - Masayuki Hata
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | - Alex Nguyen
- UNITY Biotechnology, South San Francisco, CA, USA
| | | | | | - Ariel M Wilson
- Department of Ophthalmology, Centre Universitaire d'Ophtalmologie (CUO-HMR) Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | - Frédérick A Mallette
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
- Department of Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | | | | | | | | | - Przemyslaw Sapieha
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada.
- Department of Ophthalmology, Centre Universitaire d'Ophtalmologie (CUO-HMR) Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada.
- UNITY Biotechnology, South San Francisco, CA, USA.
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Song AT, Sindeaux RHM, Li Y, Affia H, Agnihotri T, Leclerc S, van Vliet PP, Colas M, Guimond JV, Patey N, Feulner L, Joyal JS, Haddad E, Barreiro L, Andelfinger G. Developmental role of macrophages modeled in human pluripotent stem cell-derived intestinal tissue. Cell Rep 2024; 43:113616. [PMID: 38150367 DOI: 10.1016/j.celrep.2023.113616] [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: 10/25/2023] [Revised: 11/22/2023] [Accepted: 12/07/2023] [Indexed: 12/29/2023] Open
Abstract
Macrophages populate the embryo early in gestation, but their role in development is not well defined. In particular, specification and function of macrophages in intestinal development remain little explored. To study this event in the human developmental context, we derived and combined human intestinal organoid and macrophages from pluripotent stem cells. Macrophages migrate into the organoid, proliferate, and occupy the emerging microanatomical niches of epithelial crypts and ganglia. They also acquire a transcriptomic profile similar to that of fetal intestinal macrophages and display tissue macrophage behaviors, such as recruitment to tissue injury. Using this model, we show that macrophages reduce glycolysis in mesenchymal cells and limit tissue growth without affecting tissue architecture, in contrast to the pro-growth effect of enteric neurons. In short, we engineered an intestinal tissue model populated with macrophages, and we suggest that resident macrophages contribute to the regulation of metabolism and growth of the developing intestine.
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Affiliation(s)
- Andrew T Song
- Centre de Recherche, CHU Sainte-Justine, Montréal, QC, Canada; Department of Anatomy and Cell Biology, McGill University, Montréal, QC, Canada.
| | - Renata H M Sindeaux
- Centre de Recherche, CHU Sainte-Justine, Montréal, QC, Canada; Meakins Christie Laboratories, Department of Medicine, Department of Microbiology and Immunology, Department of Pathology Research Institute of McGill University Health Centre, Montréal, QC, Canada
| | - Yuanyi Li
- Centre de Recherche, CHU Sainte-Justine, Montréal, QC, Canada
| | - Hicham Affia
- Centre de Recherche, CHU Sainte-Justine, Montréal, QC, Canada
| | - Tapan Agnihotri
- Centre de Recherche, CHU Sainte-Justine, Montréal, QC, Canada; Department of Pharmacology and Therapeutics, McGill University, Montréal, QC, Canada
| | | | | | - Mathieu Colas
- Centre de Recherche, CHU Sainte-Justine, Montréal, QC, Canada
| | - Jean-Victor Guimond
- CLSC des Faubourgs, CIUSSS du Centre-Sud-de-l'Ile-de-Montréal, Montréal, QC, Canada
| | - Natalie Patey
- Department of Pathology, CHU Sainte-Justine, Université de Montréal, Montréal, QC, Canada
| | - Lara Feulner
- Centre de Recherche, CHU Sainte-Justine, Montréal, QC, Canada
| | - Jean-Sebastien Joyal
- Centre de Recherche, CHU Sainte-Justine, Montréal, QC, Canada; Département de Pédiatrie, Université de Montréal, Montréal, QC, Canada; Department of Pharmacology and Therapeutics, McGill University, Montréal, QC, Canada
| | - Elie Haddad
- Centre de Recherche, CHU Sainte-Justine, Montréal, QC, Canada; Département de Pédiatrie, Université de Montréal, Montréal, QC, Canada
| | - Luis Barreiro
- Centre de Recherche, CHU Sainte-Justine, Montréal, QC, Canada; Genetics Genomics and Systems Biology, University of Chicago, Chicago, IL, USA
| | - Gregor Andelfinger
- Centre de Recherche, CHU Sainte-Justine, Montréal, QC, Canada; Department of Anatomy and Cell Biology, McGill University, Montréal, QC, Canada; Département de Pédiatrie, Université de Montréal, Montréal, QC, Canada.
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3
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Monjarret B, Shour S, Benyoucef A, Heckel E, Marchitto L, Leiding JW, Cros G, Fernandez I, Joyal JS, Touzot F. NOX2 deficiency enhances priming and activation of the NLRP3 inflammasome. J Allergy Clin Immunol 2023:S0091-6749(23)01242-3. [PMID: 37805023 DOI: 10.1016/j.jaci.2023.09.030] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 08/18/2023] [Accepted: 09/15/2023] [Indexed: 10/09/2023]
Abstract
BACKGROUND Nicotinamide adenine dinucleotide phosphate oxidase complex 2 (NOX2) deficiency, or chronic granulomatous disease (CGD), is an inborn error of immunity associated with increased susceptibility to infection and inflammatory manifestations. The pathophysiologic mechanism leading to the increased inflammatory response in CGD remains elusive. OBJECTIVE We investigated the pathophysiologic mechanisms leading to NOD-like receptor family pyrin domain containing 3 (NLRP3) inflammasome activation in NOX2 deficiency. METHODS We used NOX2-deficient human primary and CRISPR-engineered macrophages to show that NOX2 deficiency enhances the inflammatory response mainly by modulating the 2 steps of NLRP3 inflammasome activation: its transcriptional priming and its posttranslational triggering. RESULTS At the transcriptional level, NOX2-deficient phagocytes display increased priming of the NLRP3 inflammasome, as evidenced by increased transcription of NLRP3 and IL-1β through an IL-1β-dependent stimulation of the nuclear factor kappa-light-chain enhancer of activated B cells (aka NF-κB) pathway. At the posttranslational level, the absence of NOX2 triggers the NLRP3 inflammasome activation by increased K+ efflux and excessive release of mitochondrial DNA due to mitochondrial damage. Furthermore, NLRP3-driven pyroptosis in NOX2-deficient phagocytes further enhances NLRP3 activation by increasing K+ efflux. CONCLUSION Our results unveil the role of NOX2 as a repressor of the inflammatory response at both transcriptional and posttranslational levels and pave the way for a more targeted approach to treating CGD patients with inflammatory manifestations.
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Affiliation(s)
| | - Sara Shour
- CHU Sainte-Justine Research Center, Montreal, Quebec, Canada
| | - Aissa Benyoucef
- CHU Sainte-Justine Research Center, Montreal, Quebec, Canada
| | - Emilie Heckel
- CHU Sainte-Justine Research Center, Montreal, Quebec, Canada
| | - Lorie Marchitto
- CHU Sainte-Justine Research Center, Montreal, Quebec, Canada
| | - Jennifer W Leiding
- Pediatric Infectious Disease and Immunology Arnold Palmer Hospital for Children at Orlando Health, Orlando, Fla; Department of Pediatrics, Division of Allergy and Immunology, Johns Hopkins University, Baltimore, Md
| | - Guilhem Cros
- Centre Hospitalier de l'Université de Montréal, Université de Montréal, Montreal, Quebec, Canada
| | - Isabel Fernandez
- Department of Microbiology, Infectiology and Immunology, Université de Montréal, Montreal, Quebec, Canada
| | - Jean-Sebastien Joyal
- CHU Sainte-Justine Research Center, Montreal, Quebec, Canada; Department of Pathology and Cellular Biology, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada; Department of Pediatrics, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Fabien Touzot
- CHU Sainte-Justine Research Center, Montreal, Quebec, Canada; Department of Microbiology, Infectiology and Immunology, Université de Montréal, Montreal, Quebec, Canada; Department of Pediatrics, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada.
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4
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Dominici C, Villarreal OD, Dort J, Heckel E, Wang YC, Ragoussis I, Joyal JS, Dumont N, Richard S. Inhibition of type I PRMTs reforms muscle stem cell identity enhancing their therapeutic capacity. eLife 2023; 12:84570. [PMID: 37285284 DOI: 10.7554/elife.84570] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023] Open
Abstract
In skeletal muscle, muscle stem cells (MuSC) are the main cells responsible for regeneration upon injury. In diseased skeletal muscle, it would be therapeutically advantageous to replace defective MuSCs, or rejuvenate them with drugs to enhance their self-renewal and ensure long-term regenerative potential. One limitation of the replacement approach has been the inability to efficiently expand MuSCs ex vivo, while maintaining their stemness and engraftment abilities. Herein, we show that inhibition of type I protein arginine methyltransferases (PRMTs) with MS023 increases the proliferative capacity of ex vivo cultured MuSCs. Single cell RNA sequencing (scRNAseq) of ex vivo cultured MuSCs revealed the emergence of subpopulations in MS023-treated cells which are defined by elevated Pax7 expression and markers of MuSC quiescence, both features of enhanced self-renewal. Furthermore, the scRNAseq identified MS023-specific subpopulations to be metabolically altered with upregulated glycolysis and oxidative phosphorylation (OxPhos). Transplantation of MuSCs treated with MS023 had a better ability to repopulate the MuSC niche and contributed efficiently to muscle regeneration following injury. Interestingly, the preclinical mouse model of Duchenne muscular dystrophy had increased grip strength with MS023 treatment. Our findings show that inhibition of type I PRMTs increased the proliferation capabilities of MuSCs with altered cellular metabolism, while maintaining their stem-like properties such as self-renewal and engraftment potential.
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Affiliation(s)
- Claudia Dominici
- Segal Cancer Center, Lady Davis Institute for Medical Research, McGill University, Montreal, Canada
- Departments of Human Genetics, McGill University, Montreal, Canada
| | - Oscar D Villarreal
- Segal Cancer Center, Lady Davis Institute for Medical Research, McGill University, Montreal, Canada
| | - Junio Dort
- CHU Sainte-Justine Research Center, Université de Montréal, Montréal, Canada
| | - Emilie Heckel
- CHU Sainte-Justine Research Center, Université de Montréal, Montréal, Canada
| | | | | | | | - Nicolas Dumont
- CHU Sainte-Justine Research Center, Université de Montréal, Montréal, Canada
| | - Stéphane Richard
- Segal Cancer Center, Lady Davis Institute for Medical Research, McGill University, Montreal, Canada
- Departments of Human Genetics, McGill University, Montreal, Canada
- Gerald Bronfman, Department of Oncology, McGill University, Montréal, Canada
- Departments of Medicine, McGill University, Montreal, Canada
- Departments of Biochemistry, McGill University, Montréal, Canada
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5
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Hata M, Hata M, Andriessen EM, Juneau R, Pilon F, Crespo-Garcia S, Diaz-Marin R, Guber V, Binet F, Fournier F, Buscarlet M, Grou C, Calderon V, Heckel E, Melichar HJ, Joyal JS, Wilson AM, Sapieha P. Early-life peripheral infections reprogram retinal microglia and aggravate neovascular age-related macular degeneration in later life. J Clin Invest 2023; 133:159757. [PMID: 36787231 PMCID: PMC9927938 DOI: 10.1172/jci159757] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 12/16/2022] [Indexed: 02/15/2023] Open
Abstract
Pathological neovascularization in age-related macular degeneration (nvAMD) drives the principal cause of blindness in the elderly. While there is a robust genetic association between genes of innate immunity and AMD, genome-to-phenome relationships are low, suggesting a critical contribution of environmental triggers of disease. Possible insight comes from the observation that a past history of infection with pathogens such as Chlamydia pneumoniae, or other systemic inflammation, can predispose to nvAMD in later life. Using a mouse model of nvAMD with prior C. pneumoniae infection, endotoxin exposure, and genetic ablation of distinct immune cell populations, we demonstrated that peripheral infections elicited epigenetic reprogramming that led to a persistent memory state in retinal CX3CR1+ mononuclear phagocytes (MNPs). The immune imprinting persisted long after the initial inflammation had subsided and ultimately exacerbated choroidal neovascularization in a model of nvAMD. Single-cell assay for transposase-accessible chromatin sequencing (scATAC-seq) identified activating transcription factor 3 (ATF3) as a central mediator of retina-resident MNP reprogramming following peripheral inflammation. ATF3 polarized MNPs toward a reparative phenotype biased toward production of proangiogenic factors in response to subsequent injury. Therefore, a past history of bacterial endotoxin-induced inflammation can lead to immunological reprograming within CNS-resident MNPs and aggravate pathological angiogenesis in the aging retina.
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Affiliation(s)
- Masayuki Hata
- Department of Ophthalmology,,Department of Biochemistry and Molecular Medicine, and
| | | | - Elisabeth M.M.A. Andriessen
- Department of Biomedical Sciences, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | | | | | - Sergio Crespo-Garcia
- Department of Ophthalmology,,Department of Biochemistry and Molecular Medicine, and
| | | | | | | | | | | | - Caroline Grou
- Bioinformatics Core Facility, Institut de recherches cliniques de Montréal, Montreal, Quebec, Canada
| | - Virginie Calderon
- Bioinformatics Core Facility, Institut de recherches cliniques de Montréal, Montreal, Quebec, Canada
| | - Emilie Heckel
- Department of Pediatrics, Ophthalmology, and Pharmacology, Centre Hospitalier Universitaire Ste-Justine Research Center, Montreal, Quebec, Canada
| | - Heather J. Melichar
- Department of Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | - Jean-Sebastien Joyal
- Department of Pediatrics, Ophthalmology, and Pharmacology, Centre Hospitalier Universitaire Ste-Justine Research Center, Montreal, Quebec, Canada
| | | | - Przemyslaw Sapieha
- Department of Ophthalmology,,Department of Biochemistry and Molecular Medicine, and,Department of Biomedical Sciences, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
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6
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Hata M, Andriessen EMMA, Hata M, Diaz-Marin R, Fournier F, Crespo-Garcia S, Blot G, Juneau R, Pilon F, Dejda A, Guber V, Heckel E, Daneault C, Calderon V, Des Rosiers C, Melichar HJ, Langmann T, Joyal JS, Wilson AM, Sapieha P. Past history of obesity triggers persistent epigenetic changes in innate immunity and exacerbates neuroinflammation. Science 2023; 379:45-62. [PMID: 36603072 DOI: 10.1126/science.abj8894] [Citation(s) in RCA: 37] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Age-related macular degeneration is a prevalent neuroinflammatory condition and a major cause of blindness driven by genetic and environmental factors such as obesity. In diseases of aging, modifiable factors can be compounded over the life span. We report that diet-induced obesity earlier in life triggers persistent reprogramming of the innate immune system, lasting long after normalization of metabolic abnormalities. Stearic acid, acting through Toll-like receptor 4 (TLR4), is sufficient to remodel chromatin landscapes and selectively enhance accessibility at binding sites for activator protein-1 (AP-1). Myeloid cells show less oxidative phosphorylation and shift to glycolysis, ultimately leading to proinflammatory cytokine transcription, aggravation of pathological retinal angiogenesis, and neuronal degeneration associated with loss of visual function. Thus, a past history of obesity reprograms mononuclear phagocytes and predisposes to neuroinflammation.
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Affiliation(s)
- Masayuki Hata
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada.,Department of Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Elisabeth M M A Andriessen
- Department of Biomedical Sciences, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Maki Hata
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Roberto Diaz-Marin
- Department of Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Frédérik Fournier
- Department of Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Sergio Crespo-Garcia
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada.,Department of Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Guillaume Blot
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada.,Department of Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Rachel Juneau
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Frédérique Pilon
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Agnieszka Dejda
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Vera Guber
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Emilie Heckel
- Departments of Pediatrics, Ophthalmology, and Pharmacology, Centre Hospitalier Universitaire Ste-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Caroline Daneault
- Department of Nutrition, University of Montreal, Montreal, Quebec, Plateforme métabolomique de l'Institut de Cardiologie de Montréal, Montreal, Quebec H3C 3J7, Canada
| | - Virginie Calderon
- Bioinformatics & Molecular Biology Core Facility, Institut de Recherches Cliniques de Montréal, Montreal, Quebec H2W 1R7, Canada
| | - Christine Des Rosiers
- Department of Nutrition, University of Montreal, Montreal, Quebec, Plateforme métabolomique de l'Institut de Cardiologie de Montréal, Montreal, Quebec H3C 3J7, Canada
| | - Heather J Melichar
- Department of Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Thomas Langmann
- Laboratory for Experimental Immunology of the Eye, Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Jean-Sebastien Joyal
- Departments of Pediatrics, Ophthalmology, and Pharmacology, Centre Hospitalier Universitaire Ste-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Ariel M Wilson
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Przemyslaw Sapieha
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada.,Department of Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
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7
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Sharanek A, Burban A, Laaper M, Heckel E, Joyal JS, Soleimani VD, Jahani-Asl A. OSMR controls glioma stem cell respiration and confers resistance of glioblastoma to ionizing radiation. Nat Commun 2020; 11:4116. [PMID: 32807793 PMCID: PMC7431428 DOI: 10.1038/s41467-020-17885-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [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: 11/04/2019] [Accepted: 07/22/2020] [Indexed: 12/13/2022] Open
Abstract
Glioblastoma contains a rare population of self-renewing brain tumor stem cells (BTSCs) which are endowed with properties to proliferate, spur the growth of new tumors, and at the same time, evade ionizing radiation (IR) and chemotherapy. However, the drivers of BTSC resistance to therapy remain unknown. The cytokine receptor for oncostatin M (OSMR) regulates BTSC proliferation and glioblastoma tumorigenesis. Here, we report our discovery of a mitochondrial OSMR that confers resistance to IR via regulation of oxidative phosphorylation, independent of its role in cell proliferation. Mechanistically, OSMR is targeted to the mitochondrial matrix via the presequence translocase-associated motor complex components, mtHSP70 and TIM44. OSMR interacts with NADH ubiquinone oxidoreductase 1/2 (NDUFS1/2) of complex I and promotes mitochondrial respiration. Deletion of OSMR impairs spare respiratory capacity, increases reactive oxygen species, and sensitizes BTSCs to IR-induced cell death. Importantly, suppression of OSMR improves glioblastoma response to IR and prolongs lifespan. The suppression of the receptor for oncostatin M (OSMR) can prevent glioblastoma cell growth. Here, the authors demonstrate a role for OSMR in modulating glioma stem cell respiration and its impact on resistance to ionizing radiation.
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Affiliation(s)
- Ahmad Sharanek
- Lady Davis Institute for Medical Research, Jewish General Hospital, 3755 Chemin de la Côte-Sainte-Catherine, Montréal, QC, H3T 1E2, Canada
| | - Audrey Burban
- Lady Davis Institute for Medical Research, Jewish General Hospital, 3755 Chemin de la Côte-Sainte-Catherine, Montréal, QC, H3T 1E2, Canada
| | - Matthew Laaper
- Lady Davis Institute for Medical Research, Jewish General Hospital, 3755 Chemin de la Côte-Sainte-Catherine, Montréal, QC, H3T 1E2, Canada.,Integrated program in Neuroscience, Montreal Neurological Institute, 3801 University Street, Montréal, QC, H3A 2B4, Canada
| | - Emilie Heckel
- Departments of Pediatrics, Pharmacology and Ophthalmology, Université de Montréal, CHU Sainte-Justine, Montréal, QC, H3T 1C5, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montréal, QC, H3G 1Y6, Canada
| | - Jean-Sebastien Joyal
- Departments of Pediatrics, Pharmacology and Ophthalmology, Université de Montréal, CHU Sainte-Justine, Montréal, QC, H3T 1C5, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montréal, QC, H3G 1Y6, Canada
| | - Vahab D Soleimani
- Lady Davis Institute for Medical Research, Jewish General Hospital, 3755 Chemin de la Côte-Sainte-Catherine, Montréal, QC, H3T 1E2, Canada.,Department of Human Genetics, McGill University, 3640 Rue University, Montréal, QC, H3A OC7, Canada
| | - Arezu Jahani-Asl
- Lady Davis Institute for Medical Research, Jewish General Hospital, 3755 Chemin de la Côte-Sainte-Catherine, Montréal, QC, H3T 1E2, Canada. .,Integrated program in Neuroscience, Montreal Neurological Institute, 3801 University Street, Montréal, QC, H3A 2B4, Canada. .,Gerald Bronfman Department of Oncology and Division of Experimental Medicine, McGill University, 5100 Maisonneuve Blvd West, Suite 720, H4A3T2, Montréal, QC, Canada.
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8
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Beaudry-Richard A, Nadeau-Vallée M, Prairie É, Maurice N, Heckel É, Nezhady M, Pundir S, Madaan A, Boudreault A, Hou X, Quiniou C, Sierra EM, Beaulac A, Lodygensky G, Robertson SA, Keelan J, Adams Waldorf KM, Olson DM, Rivera JC, Lubell WD, Joyal JS, Bouchard JF, Chemtob S. Author Correction: Antenatal IL-1-dependent inflammation persists postnatally and causes retinal and sub-retinal vasculopathy in progeny. Sci Rep 2020; 10:6634. [PMID: 32296110 PMCID: PMC7160106 DOI: 10.1038/s41598-020-63705-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Alexandra Beaudry-Richard
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Mathieu Nadeau-Vallée
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada.,Department of Pharmacology, Université de Montréal, Montréal, Canada
| | - Élizabeth Prairie
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Noémie Maurice
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Émilie Heckel
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Mohammad Nezhady
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Sheetal Pundir
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Ankush Madaan
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montréal, Canada
| | - Amarilys Boudreault
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Xin Hou
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Christiane Quiniou
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Estefania Marin Sierra
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montréal, Canada
| | - Alexandre Beaulac
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Gregory Lodygensky
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Sarah A Robertson
- Department of Obstetrics and Gynaecology, University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Jeffrey Keelan
- Div Obstetrics & Gynaecology, University of Western Australia King Edward Memorial Hospital, Perth, Australia
| | | | - David M Olson
- Departments of Obstetrics and Gynaecology, Pediatrics and Physiology, University of Alberta, Edmonton, AB, Canada
| | - Jose-Carlos Rivera
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, Montréal, Canada
| | - William D Lubell
- Department of Chemistry, Université de Montréal, Montréal, Canada
| | - Jean-Sebastien Joyal
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada.,Department of Pharmacology, Université de Montréal, Montréal, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montréal, Canada
| | | | - Sylvain Chemtob
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada. .,Department of Pharmacology, Université de Montréal, Montréal, Canada. .,Department of Pharmacology and Therapeutics, McGill University, Montréal, Canada.
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9
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Ravizzoni Dartora D, He Y, Mian MOR, Deprez A, Girard-Bock C, Cloutier A, Cagnone G, Gaub P, Joyal JS, Luu TM, Nuyt AM. Abstract 046: Cardiac Mitochondria are Impaired After Transient Neonatal High Oxygen Exposure in a Rat Model of Prematurity-Related Condition. Hypertension 2018. [DOI: 10.1161/hyp.72.suppl_1.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The heart relies on adequate mitochondrial (mito) ATP production to match myocardial demand, mostly through oxidative phosphorylation. Preterm birth (PT) results in ex utero development of an immature myocardium and PT-born individuals represent a newly recognized group at high risk of cardiovascular diseases. Our group has shown that newborn rats exposed to high oxygen (O
2
), mimicking PT-related conditions, develop O
2
-induced cardiomyopathy (OIC) and dysfunction later in life. However, whether mito impairments prevail in the programmed left ventricle (LV) changes associated with PT is unknown. We
aimed
to determine whether OIC is associated with altered LV mito characteristics in 4 wks-old rats. Male rat pups were kept with their mother in 80% O
2
(OIC) or room air (Ctrl) from days 3 to 10 of life. Results are mean±SEM; OIC vs. Ctrl are compared using t-test (n=4/group.P<0.05). At 4 wks, extracellular flux analysis of isolated LV cardiomyocytes revealed significantly decreased O
2
consumption rate in OIC (12.14±5.74 vs. 67.39±13.61 pmoles/min/ug). OIC rats show reduced LV mito copy number determined by the ratio between mito and genomic DNA (26.7±6.30 vs. 52.7±7.32), biogenesis markers Pgc1α (0.59±0.14 vs. 1.18±0.25), and citrate synthase (0.20±0.16 vs. 1.60±0.56) mRNA, and reduced Complex IV (0.66±0.15 vs. 1.26±0.09) protein expression. Gene expression (RT-PCR) of key glycolytic enzymes, hexokinase (3.34±0.59 vs. 0.88±0.39) and glucose-6-phosphate dehydrogenase (2.85±0.48 vs. 0.58±0.08) is significantly increased, indicating a shift toward glycolysis. OIC also were found to have higher LV mtROS production (7581±51 vs. 5191±99, fluorescence arbitrary units) and decreased antioxidant SOD2 protein expression (0.84±0.09 vs. 1.04±0.05). Taken together our results indicate that neonatal hyperoxia exposure leads to decreased LV mito biogenesis and function with impaired oxidative phosphorylation capacity in juvenile animals. Further studies are needed to determine the role of long-term mito dysfunction in the increased susceptibility to heart failure observed after deleterious neonatal conditions.
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Affiliation(s)
| | - Ying He
- Dept of Pediatrics, Université de Montréal and CHU Sainte-Justine Rsch Cntr, Montréal, Canada
| | | | - Alyson Deprez
- Dept of Pediatrics, Université de Montréal and CHU Sainte-Justine Rsch Cntr, Montréal, Canada
| | - Camille Girard-Bock
- Dept of Pediatrics, Université de Montréal and CHU Sainte-Justine Rsch Cntr, Montréal, Canada
| | - Anik Cloutier
- Dept of Pediatrics, Université de Montréal and CHU Sainte-Justine Rsch Cntr, Montréal, Canada
| | - Gael Cagnone
- Dept of Pharmacology and Physiology, Université de Montréal and CHU Sainte-Justine Rsch Cntr, Montréal, Canada
| | - Perrine Gaub
- Dept of Pharmacology and Physiology, Université de Montréal and CHU Sainte-Justine Rsch Cntr, Montréal, Canada
| | - Jean-Sebastien Joyal
- Dept of Pharmacology and Physiology, Université de Montréal and CHU Sainte-Justine Rsch Cntr, Montréal, Canada
| | - Thuy Mai Luu
- Dept of Pediatrics, Université de Montréal and CHU Sainte-Justine Rsch Cntr, Montréal, Canada
| | - Anne Monique Nuyt
- Dept of Pediatrics, Dept of Pharmacology and Physiology, Université de Montréal and CHU Sainte-Justine Rsch Cntr, Montréal, Canada
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10
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Beaudry-Richard A, Nadeau-Vallée M, Prairie É, Maurice N, Heckel É, Nezhady M, Pundir S, Madaan A, Boudreault A, Hou X, Quiniou C, Sierra EM, Beaulac A, Lodygensky G, Robertson SA, Keelan J, Adams Waldorf KM, Olson DM, Rivera JC, Lubell WD, Joyal JS, Bouchard JF, Chemtob S. Antenatal IL-1-dependent inflammation persists postnatally and causes retinal and sub-retinal vasculopathy in progeny. Sci Rep 2018; 8:11875. [PMID: 30089839 PMCID: PMC6082873 DOI: 10.1038/s41598-018-30087-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [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: 09/21/2017] [Accepted: 07/23/2018] [Indexed: 12/13/2022] Open
Abstract
Antenatal inflammation as seen with chorioamnionitis is harmful to foetal/neonatal organ development including to eyes. Although the major pro-inflammatory cytokine IL-1β participates in retinopathy induced by hyperoxia (a predisposing factor to retinopathy of prematurity), the specific role of antenatal IL-1β associated with preterm birth (PTB) in retinal vasculopathy (independent of hyperoxia) is unknown. Using a murine model of PTB induced with IL-1β injection in utero, we studied consequent retinal and choroidal vascular development; in this process we evaluated the efficacy of IL-1R antagonists. Eyes of foetuses exposed only to IL-1β displayed high levels of pro-inflammatory genes, and a persistent postnatal infiltration of inflammatory cells. This prolonged inflammatory response was associated with: (1) a marked delay in retinal vessel growth; (2) long-lasting thinning of the choroid; and (3) long-term morphological and functional alterations of the retina. Antenatal administration of IL-1R antagonists - 101.10 (a modulator of IL-1R) more so than Kineret (competitive IL-1R antagonist) - prevented all deleterious effects of inflammation. This study unveils a key role for IL-1β, a major mediator of chorioamnionitis, in causing sustained ocular inflammation and perinatal vascular eye injury, and highlights the efficacy of antenatal 101.10 to suppress deleterious inflammation.
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Affiliation(s)
- Alexandra Beaudry-Richard
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Mathieu Nadeau-Vallée
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada.,Department of Pharmacology, Université de Montréal, Montréal, Canada
| | - Élizabeth Prairie
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Noémie Maurice
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Émilie Heckel
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Mohammad Nezhady
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Sheetal Pundir
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Ankush Madaan
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montréal, Canada
| | - Amarilys Boudreault
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Xin Hou
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Christiane Quiniou
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Estefania Marin Sierra
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montréal, Canada
| | - Alexandre Beaulac
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Gregory Lodygensky
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada
| | - Sarah A Robertson
- Department of Obstetrics and Gynaecology, University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Jeffrey Keelan
- Div Obstetrics & Gynaecology, University of Western Australia King Edward Memorial Hospital, Perth, Australia
| | | | - David M Olson
- Departments of Obstetrics and Gynaecology, Pediatrics and Physiology, University of Alberta, Edmonton, AB, Canada
| | - Jose-Carlos Rivera
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, Montréal, Canada
| | - William D Lubell
- Department of Chemistry, Université de Montréal, Montréal, Canada
| | - Jean-Sebastien Joyal
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada.,Department of Pharmacology, Université de Montréal, Montréal, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montréal, Canada
| | | | - Sylvain Chemtob
- Departments of Pediatrics, Ophthalmology and Pharmacology, CHU Sainte-Justine Research Centre, Montréal, Canada. .,Department of Pharmacology, Université de Montréal, Montréal, Canada. .,Department of Pharmacology and Therapeutics, McGill University, Montréal, Canada.
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11
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Wilson AM, Shao Z, Grenier V, Mawambo G, Daudelin JF, Dejda A, Pilon F, Popovic N, Boulet S, Parinot C, Oubaha M, Labrecque N, de Guire V, Laplante M, Lettre G, Sennlaub F, Joyal JS, Meunier M, Sapieha P. Neuropilin-1 expression in adipose tissue macrophages protects against obesity and metabolic syndrome. Sci Immunol 2018; 3:3/21/eaan4626. [DOI: 10.1126/sciimmunol.aan4626] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 01/18/2018] [Indexed: 12/24/2022]
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12
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Nadeau-Vallée M, Chin PY, Belarbi L, Brien MÈ, Pundir S, Berryer MH, Beaudry-Richard A, Madaan A, Sharkey DJ, Lupien-Meilleur A, Hou X, Quiniou C, Beaulac A, Boufaied I, Boudreault A, Carbonaro A, Doan ND, Joyal JS, Lubell WD, Olson DM, Robertson SA, Girard S, Chemtob S. Antenatal Suppression of IL-1 Protects against Inflammation-Induced Fetal Injury and Improves Neonatal and Developmental Outcomes in Mice. J Immunol 2017; 198:2047-2062. [PMID: 28148737 DOI: 10.4049/jimmunol.1601600] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 12/30/2016] [Indexed: 01/08/2023]
Abstract
Preterm birth (PTB) is commonly accompanied by in utero fetal inflammation, and existing tocolytic drugs do not target fetal inflammatory injury. Of the candidate proinflammatory mediators, IL-1 appears central and is sufficient to trigger fetal loss. Therefore, we elucidated the effects of antenatal IL-1 exposure on postnatal development and investigated two IL-1 receptor antagonists, the competitive inhibitor anakinra (Kineret) and a potent noncompetitive inhibitor 101.10, for efficacy in blocking IL-1 actions. Antenatal exposure to IL-1β induced Tnfa, Il6, Ccl2, Pghs2, and Mpges1 expression in placenta and fetal membranes, and it elevated amniotic fluid IL-1β, IL-6, IL-8, and PGF2α, resulting in PTB and marked neonatal mortality. Surviving neonates had increased Il1b, Il6, Il8, Il10, Pghs2, Tnfa, and Crp expression in WBCs, elevated plasma levels of IL-1β, IL-6, and IL-8, increased IL-1β, IL-6, and IL-8 in fetal lung, intestine, and brain, and morphological abnormalities: e.g., disrupted lung alveolarization, atrophy of intestinal villus and colon-resident lymphoid follicle, and degeneration and atrophy of brain microvasculature with visual evoked potential anomalies. Late gestation treatment with 101.10 abolished these adverse outcomes, whereas Kineret exerted only modest effects and no benefit for gestation length, neonatal mortality, or placental inflammation. In a LPS-induced model of infection-associated PTB, 101.10 prevented PTB, neonatal mortality, and fetal brain inflammation. There was no substantive deviation in postnatal growth trajectory or adult body morphometry after antenatal 101.10 treatment. The results implicate IL-1 as an important driver of neonatal morbidity in PTB and identify 101.10 as a safe and effective candidate therapeutic.
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Affiliation(s)
- Mathieu Nadeau-Vallée
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, University of Montreal, Montreal, Quebec H3T 1J4, Canada
| | - Peck-Yin Chin
- Department of Obstetrics and Gynecology, Adelaide Medical School and Robinson Research Institute, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Lydia Belarbi
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Marie-Ève Brien
- Department of Obstetrics and Gynecology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada.,Department of Microbiology, Infectiology, and Immunology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada
| | - Sheetal Pundir
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec H3G 1Y6, Canada
| | - Martin H Berryer
- Department of Neurosciences, CHU Sainte-Justine Research Center, University of Montreal, Montreal, Quebec H3T 1J4, Canada
| | - Alexandra Beaudry-Richard
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Ankush Madaan
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec H3G 1Y6, Canada
| | - David J Sharkey
- Department of Obstetrics and Gynecology, Adelaide Medical School and Robinson Research Institute, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Alexis Lupien-Meilleur
- Department of Neurosciences, CHU Sainte-Justine Research Center, University of Montreal, Montreal, Quebec H3T 1J4, Canada
| | - Xin Hou
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Christiane Quiniou
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Alexandre Beaulac
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Ines Boufaied
- Department of Obstetrics and Gynecology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada.,Department of Microbiology, Infectiology, and Immunology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada
| | - Amarilys Boudreault
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada
| | - Adriana Carbonaro
- Department of Obstetrics and Gynecology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada.,Department of Microbiology, Infectiology, and Immunology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada
| | - Ngoc-Duc Doan
- Department of Chemistry, University of Montreal, Montreal, Quebec H3T 1J4, Canada
| | - Jean-Sebastien Joyal
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, University of Montreal, Montreal, Quebec H3T 1J4, Canada
| | - William D Lubell
- Department of Chemistry, University of Montreal, Montreal, Quebec H3T 1J4, Canada
| | - David M Olson
- Department of Obstetrics and Gynecology, University of Alberta, Edmonton, Alberta T6G 2R3, Canada.,Department of Pediatrics, University of Alberta, Edmonton, Alberta T6G 2R3, Canada; and.,Department of Physiology, University of Alberta, Edmonton, Alberta T6G 2R3, Canada
| | - Sarah A Robertson
- Department of Obstetrics and Gynecology, Adelaide Medical School and Robinson Research Institute, University of Adelaide, Adelaide, South Australia 5005, Australia;
| | - Sylvie Girard
- Department of Obstetrics and Gynecology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada; .,Department of Microbiology, Infectiology, and Immunology, University of Montreal, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1J4, Canada
| | - Sylvain Chemtob
- Department of Pediatrics, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada; .,Department of Ophthalmology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, CHU Sainte-Justine Research Center, Montreal, Quebec H3T 1C5, Canada.,Department of Pharmacology, University of Montreal, Montreal, Quebec H3T 1J4, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec H3G 1Y6, Canada
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13
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Fu Z, Lofqvist CA, Shao Z, Sun Y, Joyal JS, Hurst CG, Cui RZ, Evans LP, Tian K, SanGiovanni JP, Chen J, Ley D, Hansen Pupp I, Hellstrom A, Smith LEH. Dietary ω-3 polyunsaturated fatty acids decrease retinal neovascularization by adipose-endoplasmic reticulum stress reduction to increase adiponectin. Am J Clin Nutr 2015; 101:879-88. [PMID: 25833984 PMCID: PMC4381778 DOI: 10.3945/ajcn.114.099291] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 01/16/2015] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Retinopathy of prematurity (ROP) is a vision-threatening disease in premature infants. Serum adiponectin (APN) concentrations positively correlate with postnatal growth and gestational age, important risk factors for ROP development. Dietary ω-3 (n-3) long-chain polyunsaturated fatty acids (ω-3 LCPUFAs) suppress ROP and oxygen-induced retinopathy (OIR) in a mouse model of human ROP, but the mechanism is not fully understood. OBJECTIVE We examined the role of APN in ROP development and whether circulating APN concentrations are increased by dietary ω-3 LCPUFAs to mediate the protective effect in ROP. DESIGN Serum APN concentrations were correlated with ROP development and serum ω-3 LCPUFA concentrations in preterm infants. Mouse OIR was then used to determine whether ω-3 LCPUFA supplementation increases serum APN concentrations, which then suppress retinopathy. RESULTS We found that in preterm infants, low serum APN concentrations positively correlate with ROP, and serum APN concentrations positively correlate with serum ω-3 LCPUFA concentrations. In mouse OIR, serum total APN and bioactive high-molecular-weight APN concentrations are increased by ω-3 LCPUFA feed. White adipose tissue, where APN is produced and assembled in the endoplasmic reticulum, is the major source of serum APN. In mouse OIR, adipose endoplasmic reticulum stress is increased, and APN production is suppressed. ω-3 LCPUFA feed in mice increases APN production by reducing adipose endoplasmic reticulum stress markers. Dietary ω-3 LCPUFA suppression of neovascularization is reduced from 70% to 10% with APN deficiency. APN receptors localize in the retina, particularly to pathologic neovessels. CONCLUSION Our findings suggest that increasing APN by ω-3 LCPUFA supplementation in total parental nutrition for preterm infants may suppress ROP.
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Affiliation(s)
- Zhongjie Fu
- From the Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA (ZF, ZS, YS, J-SJ, CGH, RZC, LPE, KT, JC, and LEHS); the Department of Ophthalmology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (CAL and AH); the Department of Pediatrics, Institute of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden (DL and IHP); and National Eye Institute, Division of Epidemiology and Clinical Research Clinical Trials Branch, National Eye Institute, NIH, Bethesda, MD (JPS)
| | - Chatarina A Lofqvist
- From the Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA (ZF, ZS, YS, J-SJ, CGH, RZC, LPE, KT, JC, and LEHS); the Department of Ophthalmology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (CAL and AH); the Department of Pediatrics, Institute of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden (DL and IHP); and National Eye Institute, Division of Epidemiology and Clinical Research Clinical Trials Branch, National Eye Institute, NIH, Bethesda, MD (JPS)
| | - Zhuo Shao
- From the Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA (ZF, ZS, YS, J-SJ, CGH, RZC, LPE, KT, JC, and LEHS); the Department of Ophthalmology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (CAL and AH); the Department of Pediatrics, Institute of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden (DL and IHP); and National Eye Institute, Division of Epidemiology and Clinical Research Clinical Trials Branch, National Eye Institute, NIH, Bethesda, MD (JPS)
| | - Ye Sun
- From the Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA (ZF, ZS, YS, J-SJ, CGH, RZC, LPE, KT, JC, and LEHS); the Department of Ophthalmology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (CAL and AH); the Department of Pediatrics, Institute of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden (DL and IHP); and National Eye Institute, Division of Epidemiology and Clinical Research Clinical Trials Branch, National Eye Institute, NIH, Bethesda, MD (JPS)
| | - Jean-Sebastien Joyal
- From the Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA (ZF, ZS, YS, J-SJ, CGH, RZC, LPE, KT, JC, and LEHS); the Department of Ophthalmology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (CAL and AH); the Department of Pediatrics, Institute of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden (DL and IHP); and National Eye Institute, Division of Epidemiology and Clinical Research Clinical Trials Branch, National Eye Institute, NIH, Bethesda, MD (JPS)
| | - Christian G Hurst
- From the Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA (ZF, ZS, YS, J-SJ, CGH, RZC, LPE, KT, JC, and LEHS); the Department of Ophthalmology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (CAL and AH); the Department of Pediatrics, Institute of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden (DL and IHP); and National Eye Institute, Division of Epidemiology and Clinical Research Clinical Trials Branch, National Eye Institute, NIH, Bethesda, MD (JPS)
| | - Ricky Z Cui
- From the Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA (ZF, ZS, YS, J-SJ, CGH, RZC, LPE, KT, JC, and LEHS); the Department of Ophthalmology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (CAL and AH); the Department of Pediatrics, Institute of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden (DL and IHP); and National Eye Institute, Division of Epidemiology and Clinical Research Clinical Trials Branch, National Eye Institute, NIH, Bethesda, MD (JPS)
| | - Lucy P Evans
- From the Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA (ZF, ZS, YS, J-SJ, CGH, RZC, LPE, KT, JC, and LEHS); the Department of Ophthalmology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (CAL and AH); the Department of Pediatrics, Institute of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden (DL and IHP); and National Eye Institute, Division of Epidemiology and Clinical Research Clinical Trials Branch, National Eye Institute, NIH, Bethesda, MD (JPS)
| | - Katherine Tian
- From the Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA (ZF, ZS, YS, J-SJ, CGH, RZC, LPE, KT, JC, and LEHS); the Department of Ophthalmology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (CAL and AH); the Department of Pediatrics, Institute of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden (DL and IHP); and National Eye Institute, Division of Epidemiology and Clinical Research Clinical Trials Branch, National Eye Institute, NIH, Bethesda, MD (JPS)
| | - John Paul SanGiovanni
- From the Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA (ZF, ZS, YS, J-SJ, CGH, RZC, LPE, KT, JC, and LEHS); the Department of Ophthalmology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (CAL and AH); the Department of Pediatrics, Institute of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden (DL and IHP); and National Eye Institute, Division of Epidemiology and Clinical Research Clinical Trials Branch, National Eye Institute, NIH, Bethesda, MD (JPS)
| | - Jing Chen
- From the Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA (ZF, ZS, YS, J-SJ, CGH, RZC, LPE, KT, JC, and LEHS); the Department of Ophthalmology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (CAL and AH); the Department of Pediatrics, Institute of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden (DL and IHP); and National Eye Institute, Division of Epidemiology and Clinical Research Clinical Trials Branch, National Eye Institute, NIH, Bethesda, MD (JPS)
| | - David Ley
- From the Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA (ZF, ZS, YS, J-SJ, CGH, RZC, LPE, KT, JC, and LEHS); the Department of Ophthalmology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (CAL and AH); the Department of Pediatrics, Institute of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden (DL and IHP); and National Eye Institute, Division of Epidemiology and Clinical Research Clinical Trials Branch, National Eye Institute, NIH, Bethesda, MD (JPS)
| | - Ingrid Hansen Pupp
- From the Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA (ZF, ZS, YS, J-SJ, CGH, RZC, LPE, KT, JC, and LEHS); the Department of Ophthalmology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (CAL and AH); the Department of Pediatrics, Institute of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden (DL and IHP); and National Eye Institute, Division of Epidemiology and Clinical Research Clinical Trials Branch, National Eye Institute, NIH, Bethesda, MD (JPS)
| | - Ann Hellstrom
- From the Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA (ZF, ZS, YS, J-SJ, CGH, RZC, LPE, KT, JC, and LEHS); the Department of Ophthalmology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (CAL and AH); the Department of Pediatrics, Institute of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden (DL and IHP); and National Eye Institute, Division of Epidemiology and Clinical Research Clinical Trials Branch, National Eye Institute, NIH, Bethesda, MD (JPS)
| | - Lois E H Smith
- From the Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA (ZF, ZS, YS, J-SJ, CGH, RZC, LPE, KT, JC, and LEHS); the Department of Ophthalmology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden (CAL and AH); the Department of Pediatrics, Institute of Clinical Sciences Lund, Lund University and Skåne University Hospital, Lund, Sweden (DL and IHP); and National Eye Institute, Division of Epidemiology and Clinical Research Clinical Trials Branch, National Eye Institute, NIH, Bethesda, MD (JPS)
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14
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Favret S, Binet F, Lapalme E, Leboeuf D, Carbadillo J, Rubic T, Picard E, Mawambo G, Tetreault N, Joyal JS, Chemtob S, Sennlaub F, Sangiovanni JP, Guimond M, Sapieha P. Deficiency in the metabolite receptor SUCNR1 (GPR91) leads to outer retinal lesions. Aging (Albany NY) 2013; 5:427-44. [PMID: 23833031 PMCID: PMC3832265 DOI: 10.18632/aging.100563] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [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] [Indexed: 12/11/2022]
Abstract
Age-related macular degeneration (AMD) is a prominent cause of blindness in the Western world. To date, its molecular pathogenesis as well as the sequence of events leading to retinal degeneration remain largely ill-defined. While the invasion of choroidal neovasculature in the retina is the primary mechanism that precipitates loss of sight, an earlier dry form may accompany it. Here we provide the first evidence for the protective role of the Retinal Pigment Epithelium (RPE)-resident metabolite receptor, succinate receptor 1 (SUCNR1; G-Protein coupled Receptor-91 (GPR91), in preventing dry AMD-like lesions of the outer retina. Genetic analysis of 925 patients with geographic atrophy and 1199 AMD-free peers revealed an increased risk of developing geographic atrophy associated with intronic variants in the SUCNR1 gene. In mice, outer retinal expression of SUCNR1 is observed in the RPE as well as microglial cells and decreases progressively with age. Accordingly, Sucnr1−/− mice show signs of premature sub-retinal dystrophy with accumulation of oxidized-LDL, abnormal thickening of Bruch's membrane and a buildup of subretinal microglia. The accumulation of microglia in Sucnr1-deficient mice is likely triggered by the inefficient clearance of oxidized lipids by the RPE as bone marrow transfer of wild-type microglia into Sucnr1−/− mice did not salvage the patho-phenotype and systemic lipolysis was equivalent between wild-type and control mice. Our findings suggest that deficiency in SUCNR1 is a possible contributing factor to the pathogenesis of dry AMD and thus broaden our understanding of this clinically unmet need.
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Affiliation(s)
- Sandra Favret
- Department of Ophthalmology, Hopital Maisonneuve-Rosemont Research Centre, University of Montreal, Montreal, Quebec, H1T 2M4, Canada
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15
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Binet F, Mawambo G, Sitaras N, Tetreault N, Lapalme E, Favret S, Cerani A, Leboeuf D, Tremblay S, Rezende F, Juan AM, Stahl A, Joyal JS, Milot E, Kaufman RJ, Guimond M, Kennedy TE, Sapieha P. Neuronal ER stress impedes myeloid-cell-induced vascular regeneration through IRE1α degradation of netrin-1. Cell Metab 2013; 17:353-71. [PMID: 23473031 DOI: 10.1016/j.cmet.2013.02.003] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 10/26/2012] [Accepted: 01/23/2013] [Indexed: 12/13/2022]
Abstract
In stroke and proliferative retinopathy, despite hypoxia driven angiogenesis, delayed revascularization of ischemic tissue aggravates the loss of neuronal function. What hinders vascular regrowth in the ischemic central nervous system remains largely unknown. Using the ischemic retina as a model of neurovascular interaction in the CNS, we provide evidence that the failure of reparative angiogenesis is temporally and spatially associated with endoplasmic reticulum (ER) stress. The canonical ER stress pathways of protein kinase RNA-like ER kinase (PERK) and inositol-requiring enzyme-1α (IRE1α) are activated within hypoxic/ischemic retinal ganglion neurons, initiating a cascade that results in angiostatic signals. Our findings demonstrate that the endoribonuclease IRE1α degrades the classical guidance cue netrin-1. This neuron-derived cue triggers a critical reparative-angiogenic switch in neural macrophage/microglial cells. Degradation of netrin-1, by persistent neuronal ER stress, thereby hinders vascular regeneration. These data identify a neuronal-immune mechanism that directly regulates reparative angiogenesis.
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Affiliation(s)
- François Binet
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, QC H1T 2M4, Canada
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16
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Sapieha P, Joyal JS, Rivera JC, Kermorvant-Duchemin E, Sennlaub F, Hardy P, Lachapelle P, Chemtob S. Retinopathy of prematurity: understanding ischemic retinal vasculopathies at an extreme of life. J Clin Invest 2010; 120:3022-32. [PMID: 20811158 DOI: 10.1172/jci42142] [Citation(s) in RCA: 181] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Retinopathy of prematurity (ROP) is a major complication of preterm birth. It encompasses a spectrum of pathologies that affect vision, from mild disease that resolves spontaneously to severe disease that causes retinal detachment and subsequent blindness. The pathologies are characterized by an arrest in normal retinal vascular development associated with microvascular degeneration. The resulting ischemia and retinal hypoxia lead to excessive abnormal compensatory blood vessel growth. However, this neovascularization can lead to fibrous scar formation and culminate in retinal detachment. Present therapeutic modalities to limit the adverse consequences of aberrant neovascularization are invasive and/or tissue-destructive. In this Review, we discuss current concepts on retinal microvascular degeneration, neovascularization, and available treatments, as well as present future perspectives toward more profound elucidation of the pathogenesis of ROP.
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Affiliation(s)
- Przemyslaw Sapieha
- Department of Ophthalmology, Children’s Hospital Boston, Harvard Medical School, Boston, Massachusetts, USA
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17
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Marrache AM, Gobeil F, Bernier SG, Stankova J, Rola-Pleszczynski M, Choufani S, Bkaily G, Bourdeau A, Sirois MG, Vazquez-Tello A, Fan L, Joyal JS, Filep JG, Varma DR, Ribeiro-Da-silva A, Chemtob S. Platelet activating factor receptors. Adv Exp Med Biol 2003; 525:161-4. [PMID: 12751758 DOI: 10.1007/978-1-4419-9194-2_33] [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] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
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18
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Hou X, Gobeil F, Marrache AM, Quiniou C, Brault S, Checchin D, Bernier SG, Sennlaub F, Joyal JS, Abran D, Peri K, Varma DR, Chemtob S. Increased platelet-activating factor-induced periventricular brain microvascular constriction associated with immaturity. Am J Physiol Regul Integr Comp Physiol 2003; 284:R928-35. [PMID: 12626359 DOI: 10.1152/ajpregu.00633.2002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Oxidant stress contributes to the pathogenesis of hypoxic-ischemic encephalopathies. Platelet-activating factor (PAF) is generated during oxidant stress. We studied the vasomotor mode of actions of PAF on periventricular (PV) microvessels of fetal ( approximately 75% of term), newborn (1-3 days), and adult pigs. PAF constricted PV microvessels from fetal (29.27 +/- 2.6%) and newborn (22.14 +/- 3.2%) pigs but was ineffective in adults (<2.5%). Specific [(3)H]PAF binding was greater in fetus and newborn than in adults; a concordant developmental PAF-induced inositol phosphate formation was observed. PAF-induced vasoconstriction was abrogated by thromboxane A(2) (TXA(2)) synthase and receptor inhibitors, calcium channel blockers, and by removal of endothelium; vasoconstriction to TXA(2) mimetic U-46619 did not differ with age. Immunoreactive TXA(2) synthase expression and PAF-evoked TXA(2) formation revealed a fetus> newborn>adult profile. Thus the greater PAF-induced PV microvascular constriction in younger subjects seems attributable to greater PAF receptor density and mostly secondary to TXA(2) formation from endothelium. The resulting decrease in blood flow may contribute to the increased vulnerability of the PV brain regions to oxidant stress-induced injury in immature subjects.
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Affiliation(s)
- Xin Hou
- Centre de Recherche de l'Hôpital Sainte-Justine, Department of Pediatrics and Pharmacology, Université de Montréal, Montréal, H3T 1C5
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