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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2
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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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3
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Shin TH, Zhou Y, Chen S, Cordes S, Grice MZ, Fan X, Lee BC, Aljanahi AA, Hong SG, Vaughan KL, Mattison JA, Kohama SG, Fabre MA, Uchida N, Demirci S, Corat MA, Métais JY, Calvo KR, Buscarlet M, Natanson H, McGraw KL, List AF, Busque L, Tisdale JF, Vassiliou GS, Yu KR, Dunbar CE. A macaque clonal hematopoiesis model demonstrates expansion of TET2-disrupted clones and utility for testing interventions. Blood 2022; 140:1774-1789. [PMID: 35714307 PMCID: PMC9837449 DOI: 10.1182/blood.2021014875] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [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: 11/22/2021] [Accepted: 05/26/2022] [Indexed: 01/21/2023] Open
Abstract
Individuals with age-related clonal hematopoiesis (CH) are at greater risk for hematologic malignancies and cardiovascular diseases. However, predictive preclinical animal models to recapitulate the spectrum of human CH are lacking. Through error-corrected sequencing of 56 human CH/myeloid malignancy genes, we identified natural CH driver mutations in aged rhesus macaques matching genes somatically mutated in human CH, with DNMT3A mutations being the most frequent. A CH model in young adult macaques was generated via autologous transplantation of clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9-mediated gene-edited hematopoietic stem and progenitor cells (HSPCs), targeting the top human CH genes with loss-of-function (LOF) mutations. Long-term follow-up revealed reproducible and significant expansion of multiple HSPC clones with heterozygous TET2 LOF mutations, compared with minimal expansion of clones bearing other mutations. Although the blood counts of these CH macaques were normal, their bone marrows were hypercellular and myeloid-predominant. TET2-disrupted myeloid colony-forming units isolated from these animals showed a distinct hyperinflammatory gene expression profile compared with wild type. In addition, mature macrophages purified from the CH macaques showed elevated NLRP3 inflammasome activity and increased interleukin-1β (IL-1β) and IL-6 production. The model was used to test the impact of IL-6 blockage by tocilizumab, documenting a slowing of TET2-mutated expansion, suggesting that interruption of the IL-6 axis may remove the selective advantage of mutant HSPCs. These findings provide a model for examining the pathophysiology of CH and give insights into potential therapeutic interventions.
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Affiliation(s)
- Tae-Hoon Shin
- Translational Stem Cell Biology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health (NIH), Bethesda, MD
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Jeju National University, Jeju, Republic of Korea
| | - Yifan Zhou
- Translational Stem Cell Biology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health (NIH), Bethesda, MD
- Haematological Cancer Genetics, Wellcome Trust Sanger Institute, Cambridge, United Kingdom
- Wellcome-Medical Research Council (MRC) Cambridge Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom
| | - Shirley Chen
- Translational Stem Cell Biology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health (NIH), Bethesda, MD
| | - Stefan Cordes
- Translational Stem Cell Biology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health (NIH), Bethesda, MD
| | - Max Z. Grice
- Translational Stem Cell Biology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health (NIH), Bethesda, MD
| | - Xing Fan
- Translational Stem Cell Biology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health (NIH), Bethesda, MD
| | - Byung-Chul Lee
- Translational Stem Cell Biology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health (NIH), Bethesda, MD
| | - Aisha A. Aljanahi
- Translational Stem Cell Biology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health (NIH), Bethesda, MD
| | - So Gun Hong
- Translational Stem Cell Biology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health (NIH), Bethesda, MD
| | - Kelli L. Vaughan
- Translational Gerontology Branch, National Institute on Aging, NIH Animal Center, Dickerson, MD
| | - Julie A. Mattison
- Translational Gerontology Branch, National Institute on Aging, NIH Animal Center, Dickerson, MD
| | - Steven G. Kohama
- Division of Neuroscience, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR
| | - Margarete A. Fabre
- Haematological Cancer Genetics, Wellcome Trust Sanger Institute, Cambridge, United Kingdom
- Wellcome-Medical Research Council (MRC) Cambridge Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom
| | - Naoya Uchida
- Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD
| | - Selami Demirci
- Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD
| | - Marcus A.F. Corat
- Translational Stem Cell Biology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health (NIH), Bethesda, MD
- Multidisciplinary Center for Biological Research, University of Campinas, Campinas, Brazil
| | - Jean-Yves Métais
- Translational Stem Cell Biology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health (NIH), Bethesda, MD
- Department of Bone Marrow Transplantation and Cellular Therapy, St. Jude Children’s Research Hospital, Memphis, TN
| | - Katherine R. Calvo
- Hematology Section, Department of Laboratory Medicine, Clinical Center, NIH, Bethesda, MD
| | - Manuel Buscarlet
- Hôpital Maisonneuve-Rosemont, Universite de Montreal, Montreal, QC, Canada
| | - Hannah Natanson
- Translational Stem Cell Biology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health (NIH), Bethesda, MD
| | - Kathy L. McGraw
- Laboratory of Receptor Biology and Gene Expression, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD
| | | | - Lambert Busque
- Hôpital Maisonneuve-Rosemont, Universite de Montreal, Montreal, QC, Canada
| | - John F. Tisdale
- Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD
| | - George S. Vassiliou
- Haematological Cancer Genetics, Wellcome Trust Sanger Institute, Cambridge, United Kingdom
- Wellcome-Medical Research Council (MRC) Cambridge Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom
| | - Kyung-Rok Yu
- Translational Stem Cell Biology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health (NIH), Bethesda, MD
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Cynthia E. Dunbar
- Translational Stem Cell Biology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health (NIH), Bethesda, MD
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4
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Diaz-Marin R, Crespo-Garcia S, Wilson AM, Buscarlet M, Dejda A, Fournier F, Juneau R, Alquier T, Sapieha P. Myeloid-resident neuropilin-1 influences brown adipose tissue in obesity. Sci Rep 2021; 11:15767. [PMID: 34344941 PMCID: PMC8333363 DOI: 10.1038/s41598-021-95064-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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 07/20/2021] [Indexed: 11/09/2022] Open
Abstract
The beneficial effects of brown adipose tissue (BAT) on obesity and associated metabolic diseases are mediated through its capacity to dissipate energy as heat. While immune cells, such as tissue-resident macrophages, are known to influence adipose tissue homeostasis, relatively little is known about their contribution to BAT function. Here we report that neuropilin-1 (NRP1), a multiligand single-pass transmembrane receptor, is highly expressed in BAT-resident macrophages. During diet-induced obesity (DIO), myeloid-resident NRP1 influences interscapular BAT mass, and consequently vascular morphology, innervation density and ultimately core body temperature during cold exposure. Thus, NRP1-expressing myeloid cells contribute to the BAT homeostasis and potentially its thermogenic function in DIO.
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Affiliation(s)
- Roberto Diaz-Marin
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, Université de Montréal, 5415 Assumption Boulevard, Montréal, QC, H1T 2M4, Canada
| | - Sergio Crespo-Garcia
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, Université de Montréal, 5415 Assumption Boulevard, Montréal, QC, H1T 2M4, Canada
| | - Ariel M Wilson
- Department of Ophthalmology, Maisonneuve-Rosemont Research Centre, Université de Montréal, Montréal, QC, H1T2M4, Canada
| | - Manuel Buscarlet
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, Université de Montréal, 5415 Assumption Boulevard, Montréal, QC, H1T 2M4, Canada
| | - Agnieszka Dejda
- Department of Ophthalmology, Maisonneuve-Rosemont Research Centre, Université de Montréal, Montréal, QC, H1T2M4, Canada
| | - Frédérik Fournier
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, Université de Montréal, 5415 Assumption Boulevard, Montréal, QC, H1T 2M4, Canada
| | - Rachel Juneau
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, Université de Montréal, 5415 Assumption Boulevard, Montréal, QC, H1T 2M4, Canada
| | - Thierry Alquier
- Montreal Diabetes Research Centre and Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), 900 rue Saint-Denis, Montréal, QC, H2X0A9, Canada
| | - Przemyslaw Sapieha
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, Université de Montréal, 5415 Assumption Boulevard, Montréal, QC, H1T 2M4, Canada. .,Department of Ophthalmology, Maisonneuve-Rosemont Research Centre, Université de Montréal, Montréal, QC, H1T2M4, Canada.
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5
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Andriessen EMMA, Binet F, Fournier F, Hata M, Dejda A, Mawambo G, Crespo‐Garcia S, Pilon F, Buscarlet M, Beauchemin K, Bougie V, Cumberlidge G, Wilson AM, Bourgault S, Rezende FA, Beaulieu N, Delisle J, Sapieha P. Myeloid-resident neuropilin-1 promotes choroidal neovascularization while mitigating inflammation. EMBO Mol Med 2021; 13:e11754. [PMID: 33876574 PMCID: PMC8103107 DOI: 10.15252/emmm.201911754] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 02/11/2021] [Accepted: 02/24/2021] [Indexed: 01/03/2023] Open
Abstract
Age-related macular degeneration (AMD) in its various forms is a leading cause of blindness in industrialized countries. Here, we provide evidence that ligands for neuropilin-1 (NRP1), such as Semaphorin 3A and VEGF-A, are elevated in the vitreous of patients with AMD at times of active choroidal neovascularization (CNV). We further demonstrate that NRP1-expressing myeloid cells promote and maintain CNV. Expression of NRP1 on cells of myeloid lineage is critical for mitigating production of inflammatory factors such as IL6 and IL1β. Therapeutically trapping ligands of NRP1 with an NRP1-derived trap reduces CNV. Collectively, our findings identify a role for NRP1-expressing myeloid cells in promoting pathological angiogenesis during CNV and introduce a therapeutic approach to counter neovascular AMD.
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Affiliation(s)
| | - François Binet
- SemaThera Inc.MontrealQCCanada
- Department of OphthalmologyUniversity of MontrealMontrealQCCanada
| | - Frédérik Fournier
- Department of Biochemistry and Molecular MedicineUniversity of MontrealMontrealQCCanada
| | - Masayuki Hata
- Department of Biochemistry and Molecular MedicineUniversity of MontrealMontrealQCCanada
| | - Agnieszka Dejda
- Department of OphthalmologyUniversity of MontrealMontrealQCCanada
| | - Gaëlle Mawambo
- Department of Biochemistry and Molecular MedicineUniversity of MontrealMontrealQCCanada
| | - Sergio Crespo‐Garcia
- Department of OphthalmologyUniversity of MontrealMontrealQCCanada
- Department of Biochemistry and Molecular MedicineUniversity of MontrealMontrealQCCanada
| | - Frédérique Pilon
- Department of OphthalmologyUniversity of MontrealMontrealQCCanada
| | - Manuel Buscarlet
- Department of Biochemistry and Molecular MedicineUniversity of MontrealMontrealQCCanada
| | | | | | | | - Ariel M Wilson
- Department of OphthalmologyUniversity of MontrealMontrealQCCanada
| | - Steve Bourgault
- Department of ChemistryUniversité du Québec à MontréalMontrealQCCanada
| | - Flavio A Rezende
- Department of OphthalmologyUniversity of MontrealMontrealQCCanada
| | | | - Jean‐Sébastien Delisle
- Department of MedicineMaisonneuve‐Rosemont Hospital Research CentreUniversity of MontrealMontrealQCCanada
| | - Przemyslaw Sapieha
- Department of Biomedical SciencesUniversity of MontrealMontrealQCCanada
- SemaThera Inc.MontrealQCCanada
- Department of OphthalmologyUniversity of MontrealMontrealQCCanada
- Department of Biochemistry and Molecular MedicineUniversity of MontrealMontrealQCCanada
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6
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Popovic N, Hooker E, Barabino A, Flamier A, Provost F, Buscarlet M, Bernier G, Larrivée B. COCO/DAND5 inhibits developmental and pathological ocular angiogenesis. EMBO Mol Med 2021; 13:e12005. [PMID: 33587337 PMCID: PMC7933934 DOI: 10.15252/emmm.202012005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 12/22/2020] [Accepted: 12/24/2020] [Indexed: 12/11/2022] Open
Abstract
Neovascularization contributes to multiple visual disorders including age‐related macular degeneration (AMD) and retinopathy of prematurity. Current therapies for treating ocular angiogenesis are centered on the inhibition of vascular endothelial growth factor (VEGF). While clinically effective, some AMD patients are refractory or develop resistance to anti‐VEGF therapies and concerns of increased risks of developing geographic atrophy following long‐term treatment have been raised. Identification of alternative pathways to inhibit pathological angiogenesis is thus important. We have identified a novel inhibitor of angiogenesis, COCO, a member of the Cerberus‐related DAN protein family. We demonstrate that COCO inhibits sprouting, migration and cellular proliferation of cultured endothelial cells. Intravitreal injections of COCO inhibited retinal vascularization during development and in models of retinopathy of prematurity. COCO equally abrogated angiogenesis in models of choroidal neovascularization. Mechanistically, COCO inhibited TGFβ and BMP pathways and altered energy metabolism and redox balance of endothelial cells. Together, these data show that COCO is an inhibitor of retinal and choroidal angiogenesis, possibly representing a therapeutic option for the treatment of neovascular ocular diseases.
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Affiliation(s)
- Natalija Popovic
- Faculty of Medicine, University of Montreal, Montreal, QC, Canada.,Hôpital Maisonneuve Rosemont Research Centre, Montreal, QC, Canada
| | - Erika Hooker
- Faculty of Medicine, University of Montreal, Montreal, QC, Canada.,Hôpital Maisonneuve Rosemont Research Centre, Montreal, QC, Canada
| | - Andrea Barabino
- Hôpital Maisonneuve Rosemont Research Centre, Montreal, QC, Canada.,Department of Neurosciences, University of Montreal, Montreal, QC, Canada
| | - Anthony Flamier
- Hôpital Maisonneuve Rosemont Research Centre, Montreal, QC, Canada.,Department of Neurosciences, University of Montreal, Montreal, QC, Canada
| | - Frédéric Provost
- Hôpital Maisonneuve Rosemont Research Centre, Montreal, QC, Canada
| | - Manuel Buscarlet
- Hôpital Maisonneuve Rosemont Research Centre, Montreal, QC, Canada
| | - Gilbert Bernier
- Faculty of Medicine, University of Montreal, Montreal, QC, Canada.,Hôpital Maisonneuve Rosemont Research Centre, Montreal, QC, Canada.,Department of Neurosciences, University of Montreal, Montreal, QC, Canada
| | - Bruno Larrivée
- Faculty of Medicine, University of Montreal, Montreal, QC, Canada.,Hôpital Maisonneuve Rosemont Research Centre, Montreal, QC, Canada.,Department of Ophthalmology, University of Montreal, Montreal, QC, Canada
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7
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Binet F, Cagnone G, Crespo-Garcia S, Hata M, Neault M, Dejda A, Wilson AM, Buscarlet M, Mawambo GT, Howard JP, Diaz-Marin R, Parinot C, Guber V, Pilon F, Juneau R, Laflamme R, Sawchyn C, Boulay K, Leclerc S, Abu-Thuraia A, Côté JF, Andelfinger G, Rezende FA, Sennlaub F, Joyal JS, Mallette FA, Sapieha P. Neutrophil extracellular traps target senescent vasculature for tissue remodeling in retinopathy. Science 2020; 369:369/6506/eaay5356. [PMID: 32820093 DOI: 10.1126/science.aay5356] [Citation(s) in RCA: 116] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 05/17/2020] [Accepted: 07/06/2020] [Indexed: 01/10/2023]
Abstract
In developed countries, the leading causes of blindness such as diabetic retinopathy are characterized by disorganized vasculature that can become fibrotic. Although many such pathological vessels often naturally regress and spare sight-threatening complications, the underlying mechanisms remain unknown. Here, we used orthogonal approaches in human patients with proliferative diabetic retinopathy and a mouse model of ischemic retinopathies to identify an unconventional role for neutrophils in vascular remodeling during late-stage sterile inflammation. Senescent vasculature released a secretome that attracted neutrophils and triggered the production of neutrophil extracellular traps (NETs). NETs ultimately cleared diseased endothelial cells and remodeled unhealthy vessels. Genetic or pharmacological inhibition of NETosis prevented the regression of senescent vessels and prolonged disease. Thus, clearance of senescent retinal blood vessels leads to reparative vascular remodeling.
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Affiliation(s)
- François Binet
- Departments of Ophthalmology and.,Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Gael Cagnone
- Departments of Pediatrics and.,Pharmacology, Centre Hospitalier Universitaire Ste-Justine, University of Montreal, Montréal, Quebec H3T 1C5, Canada
| | - Sergio Crespo-Garcia
- Departments of Ophthalmology and.,Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Masayuki Hata
- Departments of Ophthalmology and.,Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Mathieu Neault
- Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Agnieszka Dejda
- Departments of Ophthalmology and.,Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | | | - Manuel Buscarlet
- Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Gaelle Tagne Mawambo
- Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | | | - Roberto Diaz-Marin
- Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | | | | | | | | | | | - Christina Sawchyn
- Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Karine Boulay
- Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | | | - Afnan Abu-Thuraia
- Institut de Recherches Cliniques de Montréal, University of Montreal, Montreal, Quebec H2W 1R7, Canada
| | - Jean-François Côté
- Institut de Recherches Cliniques de Montréal, University of Montreal, Montreal, Quebec H2W 1R7, Canada
| | | | | | - Florian Sennlaub
- Institut National de la Santé et de la Recherche Médicale, U 968 Paris F-75012, France
| | - Jean-Sébastien Joyal
- Departments of Ophthalmology and .,Departments of Pediatrics and.,Pharmacology, Centre Hospitalier Universitaire Ste-Justine, University of Montreal, Montréal, Quebec H3T 1C5, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec H3A 2B4, Canada
| | - Frédérick A Mallette
- Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada. .,Department of Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada
| | - Przemyslaw Sapieha
- Departments of Ophthalmology and .,Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada.,Department of Neurology-Neurosurgery, McGill University, Montreal, Quebec H3A 2B4, Canada
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8
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Ayachi S, Buscarlet M, Busque L. 60 Years of clonal hematopoiesis research: From X-chromosome inactivation studies to the identification of driver mutations. Exp Hematol 2020; 83:2-11. [PMID: 32001340 DOI: 10.1016/j.exphem.2020.01.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 01/18/2020] [Accepted: 01/22/2020] [Indexed: 12/17/2022]
Abstract
The history of clonal hematopoiesis (CH) research is punctuated by several seminal discoveries that have forged our understanding of cancer development. The clever application of the principle of random X-chromosome inactivation (XCI) in females led to the development of the first test to identify clonal derivation of cells. Initially limited by a low level of informativeness, the applicability of these assays expanded with differential methylation-based assays at highly polymorphic genes such as the human androgen receptor (HUMARA). Twenty years ago, the observation that skewing of XCI ratios increases as women age was the first clue that led to the identification of mutations in the TET2 gene in hematologically normal aging individuals. In 2014, large-scale genomic approaches of three cohorts allowed definition of CH, which was reported to increase the risk of developing hematologic cancers and cardiovascular diseases. These observations created a fertile field of investigation aimed at investigating the etiology and consequences of CH. The most frequently mutated genes in CH are DNMT3A, TET2, and ASXL1, which have a role in hematopoietic stem cell (HSC) development and self-renewal. These mutations confer a competitive advantage to the CH clones. However, the penetrance of CH is age dependent but incomplete, suggesting the influence of extrinsic factors. Recent data attribute a modest role to genetic predisposition, but several observations point to the impact of a pro-inflammatory milieu that advantages the mutated clones. CH may be a barometer of nonhealthy aging, and interventions devised at curbing its initiation or progression should be a research priority.
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Affiliation(s)
- Sami Ayachi
- Research Center, Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada; Department of Medicine, Université de Montréal, Montreal, Québec, Canada
| | - Manuel Buscarlet
- Research Center, Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada
| | - Lambert Busque
- Research Center, Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada; Department of Medicine, Université de Montréal, Montreal, Québec, Canada; Hematology Division, Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada.
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9
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Busque L, Buscarlet M, Mollica L, Levine RL. Concise Review: Age-Related Clonal Hematopoiesis: Stem Cells Tempting the Devil. Stem Cells 2018; 36:1287-1294. [PMID: 29883022 DOI: 10.1002/stem.2845] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [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: 01/16/2018] [Revised: 03/25/2018] [Accepted: 04/19/2018] [Indexed: 12/16/2022]
Abstract
The recent characterization of clonal hematopoiesis in a large segment of the aging population has raised tremendous interest and concern alike. Mutations have been documented in genes associated with hematological cancers and in non-driver candidates. These mutations are present at low frequency in the majority of individuals after middle-age, and principally affect the epigenetic modifiers DNMT3A and TET2. In 10%-40% of cases, the clone will progress to meet the diagnostic criteria for Clonal Hematopoiesis of Indeterminate Potential, which is associated with an increased risk of hematological cancer and cardiovascular mortality. Blood cell parameters appear unmodified in these individuals, but a minority of them will develop a hematologic malignancy. At this time, the factors put forward as potentially influencing the risk of cancer development are clone size, specific gene, specific mutation, and the number of mutations. Specific stress on hematopoiesis also gives rise to clonal expansion. Genotoxic exposure (such as chemotherapy), or immune attack (as in aplastic anemia) selects/provides a fitness advantage to clones with a context-specific signature. Clonal hematopoiesis offers a new opportunity to understand the biology and adaptation mechanisms of aging hematopoiesis and provides insight into the mechanisms underlying malignant transformation. Furthermore, it might shed light on common denominators of age-associated medical conditions and help devise global strategies that will impact the prevention of hematologic cancers and promote healthy aging. Stem Cells 2018;36:1287-1294.
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Affiliation(s)
- Lambert Busque
- Research Center, Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada.,Hematology Division, Hôpital Maisonneuve-Rosemont Montréal, Québec, Canada.,Université de Montréal, Montréal, Québec, Canada
| | - Manuel Buscarlet
- Research Center, Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada
| | - Luigina Mollica
- Research Center, Hôpital Maisonneuve-Rosemont, Montréal, Québec, Canada.,Hematology Division, Hôpital Maisonneuve-Rosemont Montréal, Québec, Canada.,Université de Montréal, Montréal, Québec, Canada
| | - Ross L Levine
- Human Oncology and Pathogenesis Program, Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
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10
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Meisel M, Hinterleitner R, Pacis A, Chen L, Earley ZM, Mayassi T, Pierre JF, Ernest JD, Galipeau HJ, Thuille N, Bouziat R, Buscarlet M, Ringus DL, Wang Y, Li Y, Dinh V, Kim SM, McDonald BD, Zurenski MA, Musch MW, Furtado GC, Lira SA, Baier G, Chang EB, Eren AM, Weber CR, Busque L, Godley LA, Verdú EF, Barreiro LB, Jabri B. Microbial signals drive pre-leukaemic myeloproliferation in a Tet2-deficient host. Nature 2018; 557:580-584. [PMID: 29769727 PMCID: PMC6238954 DOI: 10.1038/s41586-018-0125-z] [Citation(s) in RCA: 254] [Impact Index Per Article: 42.3] [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: 06/01/2017] [Accepted: 04/17/2018] [Indexed: 01/17/2023]
Abstract
Somatic mutations in tet methylcytosine dioxygenase 2 (TET2), which encodes an epigenetic modifier enzyme, drive the development of haematopoietic malignancies1-7. In both humans and mice, TET2 deficiency leads to increased self-renewal of haematopoietic stem cells with a net developmental bias towards the myeloid lineage1,4,8,9. However, pre-leukaemic myeloproliferation (PMP) occurs in only a fraction of Tet2-/- mice8,9 and humans with TET2 mutations1,3,5-7, suggesting that extrinsic non-cell-autonomous factors are required for disease onset. Here we show that bacterial translocation and increased interleukin-6 production, resulting from dysfunction of the small-intestinal barrier, are critical for the development of PMP in mice that lack Tet2 expression in haematopoietic cells. Furthermore, in symptom-free Tet2-/- mice, PMP can be induced by disrupting intestinal barrier integrity, or in response to systemic bacterial stimuli such as the toll-like receptor 2 agonist. PMP was reversed by antibiotic treatment and failed to develop in germ-free Tet2-/- mice, which illustrates the importance of microbial signals in the development of this condition. Our findings demonstrate the requirement for microbial-dependent inflammation in the development of PMP and provide a mechanistic basis for the variation in PMP penetrance observed in Tet2-/- mice. This study will prompt new lines of investigation that may profoundly affect the prevention and management of haematopoietic malignancies.
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Affiliation(s)
- Marlies Meisel
- Department of Medicine, University of Chicago, Chicago, IL, USA
- Committee on Immunology, University of Chicago, Chicago, IL, USA
| | - Reinhard Hinterleitner
- Department of Medicine, University of Chicago, Chicago, IL, USA
- Committee on Immunology, University of Chicago, Chicago, IL, USA
| | - Alain Pacis
- Department of Genetics, CHU Sainte-Justine Research Center, Montreal, Quebec, Canada
- Department of Biochemistry, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Li Chen
- Department of Medicine, University of Chicago, Chicago, IL, USA
- Committee on Immunology, University of Chicago, Chicago, IL, USA
| | - Zachary M Earley
- Department of Medicine, University of Chicago, Chicago, IL, USA
- Committee on Immunology, University of Chicago, Chicago, IL, USA
| | - Toufic Mayassi
- Department of Medicine, University of Chicago, Chicago, IL, USA
- Committee on Immunology, University of Chicago, Chicago, IL, USA
| | - Joseph F Pierre
- Department of Medicine, University of Chicago, Chicago, IL, USA
- Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Jordan D Ernest
- Department of Medicine, University of Chicago, Chicago, IL, USA
- Committee on Immunology, University of Chicago, Chicago, IL, USA
| | - Heather J Galipeau
- Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Nikolaus Thuille
- Translational Cell Genetics, Department for Pharmacology and Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Romain Bouziat
- Department of Medicine, University of Chicago, Chicago, IL, USA
- Committee on Immunology, University of Chicago, Chicago, IL, USA
| | - Manuel Buscarlet
- Research Centre, Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
| | - Daina L Ringus
- Department of Medicine, University of Chicago, Chicago, IL, USA
| | - Yitang Wang
- Department of Pathology and Pediatrics, University of Chicago, Chicago, IL, USA
| | - Ye Li
- Department of Pathology and Pediatrics, University of Chicago, Chicago, IL, USA
| | - Vu Dinh
- Department of Medicine, University of Chicago, Chicago, IL, USA
- Committee on Immunology, University of Chicago, Chicago, IL, USA
| | - Sangman M Kim
- Department of Medicine, University of Chicago, Chicago, IL, USA
- Committee on Immunology, University of Chicago, Chicago, IL, USA
| | - Benjamin D McDonald
- Department of Medicine, University of Chicago, Chicago, IL, USA
- Department of Pathology and Pediatrics, University of Chicago, Chicago, IL, USA
| | - Matthew A Zurenski
- Department of Medicine, University of Chicago, Chicago, IL, USA
- Committee on Immunology, University of Chicago, Chicago, IL, USA
| | - Mark W Musch
- Department of Medicine, University of Chicago, Chicago, IL, USA
| | - Glaucia C Furtado
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Sergio A Lira
- Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Gottfried Baier
- Translational Cell Genetics, Department for Pharmacology and Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Eugene B Chang
- Department of Medicine, University of Chicago, Chicago, IL, USA
| | - A Murat Eren
- Department of Medicine, University of Chicago, Chicago, IL, USA
- Marine Biological Laboratory, Woods Hole, MA, USA
| | - Christopher R Weber
- Department of Pathology and Pediatrics, University of Chicago, Chicago, IL, USA
| | - Lambert Busque
- Research Centre, Hôpital Maisonneuve-Rosemont, Montreal, Quebec, Canada
- Hematology Division, Hôpital Maisonneuve-Rosemont, Université de Montréal, Montreal, Quebec, Canada
| | - Lucy A Godley
- Department of Medicine, University of Chicago, Chicago, IL, USA
- Section of Hematology/Oncology, University of Chicago, Chicago, IL, USA
| | - Elena F Verdú
- Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Luis B Barreiro
- Department of Genetics, CHU Sainte-Justine Research Center, Montreal, Quebec, Canada
- Department of Pediatrics, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Bana Jabri
- Department of Medicine, University of Chicago, Chicago, IL, USA.
- Committee on Immunology, University of Chicago, Chicago, IL, USA.
- Department of Pathology and Pediatrics, University of Chicago, Chicago, IL, USA.
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11
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Buscarlet M, Tessier A, Provost S, Mollica L, Busque L. Human blood cell levels of 5-hydroxymethylcytosine (5hmC) decline with age, partly related to acquired mutations in TET2. Exp Hematol 2016; 44:1072-1084. [PMID: 27475703 DOI: 10.1016/j.exphem.2016.07.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 07/08/2016] [Accepted: 07/14/2016] [Indexed: 12/15/2022]
Abstract
Epigenetic alteration may play a role in age-associated dysfunction of stem cells and predispose to the development of hematological cancers. We analyzed global levels of hematopoietic 5-hydroxymethylcytosine (5hmC) and 5-methylcytosine (5mC) in a cross-sectional study comprising 198 unrelated individuals from four age categories (neonates, 25-30, 70-75, and >90 years old) by liquid chromatography-electrospray ionization-tandem mass spectrometry with multiple reaction monitoring. X-chromosome inactivation (XCI) ratios and telomere length (TL) were measured in all individuals by polymerase chain reaction. Sequencing of epigenetic regulator genes (including TET2, DNMT3A, ASXL1, IDH1, IDH2, and WT1) was performed in the two older subcohorts. We found that global 5hmC levels declined with age in human blood cells (27.5% reduction from birth to old age, p < 0.0005). The levels of 5mC underwent a more modest reduction (2.4% drop) between newborns and the elderly (p < 0.0005). Low 5hmC was associated with increased skewing of XCI (age-adjusted p = 0.0304) and reduced TL (age-adjusted p = 0.0354), both surrogate markers of clonal dominance. Of the 100 individuals over the age of 70, 16 had somatic mutations in TET2, 14 in DNMT3A, and none in IDH1, IDH2, or WT1. Individuals with TET2 mutations had significantly lower 5hmC (relative to unmutated individuals), whereas DNMT3A-mutated subjects did not. However, mutations in TET2 cannot account solely for the decline in 5hmC levels observed with aging because unmutated older individuals also had lower 5hmC levels compared with younger individuals. This suggests that the age-associated decline in 5hmC is multifactorial. Larger prospective studies are needed to determine whether 5hmC reduction is a biomarker of hematological cancer development.
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Affiliation(s)
| | - Alain Tessier
- Centre for Biological Applications of Mass Spectrometry, Department of Chemistry and Biochemistry, Concordia University, Montreal, Canada
| | - Sylvie Provost
- Beaulieu-Saucier Pharmacogenomics Centre, Montreal Heart Institute Research Centre, Montreal, Canada
| | - Luigina Mollica
- Research Centre, Montreal, Canada; Department of Hematology, Installation Hôpital Maisonneuve-Rosemont, Montreal, Canada; Université de Montréal, Montreal, Canada
| | - Lambert Busque
- Research Centre, Montreal, Canada; Department of Hematology, Installation Hôpital Maisonneuve-Rosemont, Montreal, Canada; Université de Montréal, Montreal, Canada.
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12
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Ciarapica R, Methot L, Tang Y, Lo R, Dali R, Buscarlet M, Locatelli F, del Sal G, Rota R, Stifani S. Prolyl isomerase Pin1 and protein kinase HIPK2 cooperate to promote cortical neurogenesis by suppressing Groucho/TLE:Hes1-mediated inhibition of neuronal differentiation. Cell Death Differ 2013; 21:321-32. [PMID: 24270405 DOI: 10.1038/cdd.2013.160] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2013] [Revised: 09/10/2013] [Accepted: 10/09/2013] [Indexed: 01/15/2023] Open
Abstract
The Groucho/transducin-like Enhancer of split 1 (Gro/TLE1):Hes1 transcriptional repression complex acts in cerebral cortical neural progenitor cells to inhibit neuronal differentiation. The molecular mechanisms that regulate the anti-neurogenic function of the Gro/TLE1:Hes1 complex during cortical neurogenesis remain to be defined. Here we show that prolyl isomerase Pin1 (peptidyl-prolyl cis-trans isomerase NIMA-interacting 1) and homeodomain-interacting protein kinase 2 (HIPK2) are expressed in cortical neural progenitor cells and form a complex that interacts with the Gro/TLE1:Hes1 complex. This association depends on the enzymatic activities of both HIPK2 and Pin1, as well as on the association of Gro/TLE1 with Hes1, but is independent of the previously described Hes1-activated phosphorylation of Gro/TLE1. Interaction with the Pin1:HIPK2 complex results in Gro/TLE1 hyperphosphorylation and weakens both the transcriptional repression activity and the anti-neurogenic function of the Gro/TLE1:Hes1 complex. These results provide evidence that HIPK2 and Pin1 work together to promote cortical neurogenesis, at least in part, by suppressing Gro/TLE1:Hes1-mediated inhibition of neuronal differentiation.
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Affiliation(s)
- R Ciarapica
- 1] Montreal Neurological Institute, McGill University, 3801 rue University, Montreal, Quebec H3A2B4, Canada [2] Department of Oncohematology, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - L Methot
- Montreal Neurological Institute, McGill University, 3801 rue University, Montreal, Quebec H3A2B4, Canada
| | - Y Tang
- Montreal Neurological Institute, McGill University, 3801 rue University, Montreal, Quebec H3A2B4, Canada
| | - R Lo
- Montreal Neurological Institute, McGill University, 3801 rue University, Montreal, Quebec H3A2B4, Canada
| | - R Dali
- Montreal Neurological Institute, McGill University, 3801 rue University, Montreal, Quebec H3A2B4, Canada
| | - M Buscarlet
- Montreal Neurological Institute, McGill University, 3801 rue University, Montreal, Quebec H3A2B4, Canada
| | - F Locatelli
- 1] Department of Oncohematology, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy [2] University of Pavia, Pavia, Italy
| | - G del Sal
- 1] Laboratorio Nazionale CIB, Area Science Park, Trieste, Italy [2] Dipartimento di Scienze della Vita, Università degli Studi di Trieste, Trieste, Italy
| | - R Rota
- Department of Oncohematology, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - S Stifani
- Montreal Neurological Institute, McGill University, 3801 rue University, Montreal, Quebec H3A2B4, Canada
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13
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Krasteva V, Buscarlet M, Diaz-Tellez A, Bernard MA, Crabtree GR, Lessard JA. The BAF53a subunit of SWI/SNF-like BAF complexes is essential for hemopoietic stem cell function. Blood 2012; 120:4720-32. [PMID: 23018638 PMCID: PMC10627118 DOI: 10.1182/blood-2012-04-427047] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [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: 04/27/2012] [Accepted: 09/16/2012] [Indexed: 12/14/2022] Open
Abstract
ATP-dependent SWI/SNF-like BAF chromatin remodeling complexes are emerging as key regulators of embryonic and adult stem cell function. Particularly intriguing are the findings that specialized assemblies of BAF complexes are required for establishing and maintaining pluripotent and multipotent states in cells. However, little is known on the importance of these complexes in normal and leukemic hemopoiesis. Here we provide the first evidence that the actin-related protein BAF53a, a subunit of BAF complexes preferentially expressed in long-term repopulating stem cells, is essential for adult hemopoiesis. Conditional deletion of BAF53a resulted in multilineage BM failure, aplastic anemia, and rapid lethality. These severe hemopoietic defects originate from a proliferative impairment of BM HSCs and progenitors and decreased progenitor survival. Using hemopoietic chimeras, we show that the impaired function of BAF53a-deficient HSCs is cell-autonomous and independent of the BM microenvironment. Altogether, our studies highlight an unsuspected role for BAF chromatin remodeling complexes in the maintenance of HSC and progenitor cell properties.
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Affiliation(s)
- Veneta Krasteva
- Institute for Research in Immunology and Cancer (IRIC), Montreal, QC
- Department of Pathology and Cell Biology, Faculty of Medicine, Université de Montréal, Montreal, QC; and
| | - Manuel Buscarlet
- Institute for Research in Immunology and Cancer (IRIC), Montreal, QC
- Department of Pathology and Cell Biology, Faculty of Medicine, Université de Montréal, Montreal, QC; and
| | - Abigail Diaz-Tellez
- Institute for Research in Immunology and Cancer (IRIC), Montreal, QC
- Department of Pathology and Cell Biology, Faculty of Medicine, Université de Montréal, Montreal, QC; and
| | - Marie-Anne Bernard
- Institute for Research in Immunology and Cancer (IRIC), Montreal, QC
- Department of Pathology and Cell Biology, Faculty of Medicine, Université de Montréal, Montreal, QC; and
| | - Gerald R. Crabtree
- Departments of Pathology, Stanford, CA
- Developmental Biology, Stanford University School of Medicine, Howard Hughes Medical Institute, Stanford, CA
| | - Julie A. Lessard
- Institute for Research in Immunology and Cancer (IRIC), Montreal, QC
- Department of Pathology and Cell Biology, Faculty of Medicine, Université de Montréal, Montreal, QC; and
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14
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Buscarlet M, Perin A, Laing A, Brickman JM, Stifani S. Inhibition of cortical neuron differentiation by Groucho/TLE1 requires interaction with WRPW, but not Eh1, repressor peptides. J Biol Chem 2008; 283:24881-8. [PMID: 18611861 DOI: 10.1074/jbc.m800722200] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [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
In both invertebrates and vertebrates, transcriptional co-repressors of the Groucho/transducin-like Enhancer of split (Gro/TLE) family regulate a number of developmental mechanisms, including neuronal differentiation. The pleiotropic activity of Gro/TLE depends on context-specific interactions with a variety of DNA-binding proteins. Most of those factors engage Gro/TLE through two different types of short peptide motifs, the WRP(W/Y) tetrapeptide and the Engrailed homology 1 (Eh1) sequence (FXIXXIL). The aim of this study was to elucidate the contribution of WRP(W/Y) and Eh1 motifs to mammalian Gro/TLE anti-neurogenic activity. Here we describe point mutations within the C-terminal WD40 repeat domain of Gro/TLE1 that do not perturb protein folding but disrupt the ability of Gro/TLE1 to inhibit the differentiation of cerebral cortex neural progenitor cells into neurons. One of those mutations, L743F, selectively blocks binding to Hes1, an anti-neurogenic basic helix-loop-helix protein that harbors a WRPW motif. In contrast, the L743F mutation does not disrupt binding to Engrailed1 and FoxG1, which both contain Eh1 motifs, nor to Tcf3, which binds to the Gro/TLE N terminus. These results demonstrate that the recruitment of transcription factors harboring WRP(W/Y) tetrapeptides is essential to the anti-neurogenic function of Gro/TLE1.
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Affiliation(s)
- Manuel Buscarlet
- Centre for Neuronal Survival, Montreal Neurological Institute, McGill University, Montreal, Quebec H3A 2B4, Canada
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15
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Abstract
Groucho proteins are abundant and broadly expressed nuclear factors that lack intrinsic DNA-binding activity but can interact with a variety of DNA-binding proteins. The recruitment of Groucho to specific gene regulatory sequences results in transcriptional repression. In both invertebrates and vertebrates, Groucho family members act as important regulators of several signaling mechanisms, including the Notch, Wingless/Wnt and Dpp/BMP/TGF-beta signaling pathways. Recent studies of embryonic development in several species point to an important role for Groucho in the regulation of multiple patterning and differentiation events. Moreover, a deregulated expression of human Groucho family members is correlated with several neoplastic conditions. Here we focus on the functions of Groucho proteins during body patterning and their implication in tumorigenesis.
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Affiliation(s)
- Manuel Buscarlet
- Center for Neuronal Survival, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
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