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Gardin A, Rouillon J, Montalvo-Romeral V, Rossiaud L, Vidal P, Launay R, Vie M, Krimi Benchekroun Y, Cosette J, Bertin B, La Bella T, Dubreuil G, Nozi J, Jauze L, Fragnoud R, Daniele N, Van Wittenberghe L, Esque J, André I, Nissan X, Hoch L, Ronzitti G. A functional mini-GDE transgene corrects impairment in models of glycogen storage disease type III. J Clin Invest 2024; 134:e172018. [PMID: 38015640 PMCID: PMC10786702 DOI: 10.1172/jci172018] [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: 05/04/2023] [Accepted: 11/08/2023] [Indexed: 11/30/2023] Open
Abstract
Glycogen storage disease type III (GSDIII) is a rare inborn error of metabolism affecting liver, skeletal muscle, and heart due to mutations of the AGL gene encoding for the glycogen debranching enzyme (GDE). No curative treatment exists for GSDIII. The 4.6 kb GDE cDNA represents the major technical challenge toward the development of a single recombinant adeno-associated virus-derived (rAAV-derived) vector gene therapy strategy. Using information on GDE structure and molecular modeling, we generated multiple truncated GDEs. Among them, an N-terminal-truncated mutant, ΔNter2-GDE, had a similar efficacy in vivo compared with the full-size enzyme. A rAAV vector expressing ΔNter2-GDE allowed significant glycogen reduction in heart and muscle of Agl-/- mice 3 months after i.v. injection, as well as normalization of histology features and restoration of muscle strength. Similarly, glycogen accumulation and histological features were corrected in a recently generated Agl-/- rat model. Finally, transduction with rAAV vectors encoding ΔNter2-GDE corrected glycogen accumulation in an in vitro human skeletal muscle cellular model of GSDIII. In conclusion, our results demonstrated the ability of a single rAAV vector expressing a functional mini-GDE transgene to correct the muscle and heart phenotype in multiple models of GSDIII, supporting its clinical translation to patients with GSDIII.
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Affiliation(s)
- Antoine Gardin
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, Evry, France
| | - Jérémy Rouillon
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, Evry, France
| | - Valle Montalvo-Romeral
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, Evry, France
| | - Lucille Rossiaud
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, Evry, France
- CECS, I-STEM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, Corbeil-Essonnes, France
| | - Patrice Vidal
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, Evry, France
| | - Romain Launay
- Toulouse Biotechnology Institute, TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France
| | - Mallaury Vie
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, Evry, France
| | - Youssef Krimi Benchekroun
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, Evry, France
| | | | - Bérangère Bertin
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, Evry, France
| | - Tiziana La Bella
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, Evry, France
| | | | - Justine Nozi
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, Evry, France
| | - Louisa Jauze
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, Evry, France
| | | | | | | | - Jérémy Esque
- Toulouse Biotechnology Institute, TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France
| | - Isabelle André
- Toulouse Biotechnology Institute, TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France
| | - Xavier Nissan
- CECS, I-STEM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, Corbeil-Essonnes, France
| | - Lucile Hoch
- CECS, I-STEM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, Corbeil-Essonnes, France
| | - Giuseppe Ronzitti
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, Evry, France
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2
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Rossiaud L, Fragner P, Barbon E, Gardin A, Benabides M, Pellier E, Cosette J, El Kassar L, Giraud-Triboult K, Nissan X, Ronzitti G, Hoch L. Pathological modeling of glycogen storage disease type III with CRISPR/Cas9 edited human pluripotent stem cells. Front Cell Dev Biol 2023; 11:1163427. [PMID: 37250895 PMCID: PMC10213880 DOI: 10.3389/fcell.2023.1163427] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 05/02/2023] [Indexed: 05/31/2023] Open
Abstract
Introduction: Glycogen storage disease type III (GSDIII) is a rare genetic disease caused by mutations in the AGL gene encoding the glycogen debranching enzyme (GDE). The deficiency of this enzyme, involved in cytosolic glycogen degradation, leads to pathological glycogen accumulation in liver, skeletal muscles and heart. Although the disease manifests with hypoglycemia and liver metabolism impairment, the progressive myopathy is the major disease burden in adult GSDIII patients, without any curative treatment currently available. Methods: Here, we combined the self-renewal and differentiation capabilities of human induced pluripotent stem cells (hiPSCs) with cutting edge CRISPR/Cas9 gene editing technology to establish a stable AGL knockout cell line and to explore glycogen metabolism in GSDIII. Results: Following skeletal muscle cells differentiation of the edited and control hiPSC lines, our study reports that the insertion of a frameshift mutation in AGL gene results in the loss of GDE expression and persistent glycogen accumulation under glucose starvation conditions. Phenotypically, we demonstrated that the edited skeletal muscle cells faithfully recapitulate the phenotype of differentiated skeletal muscle cells of hiPSCs derived from a GSDIII patient. We also demonstrated that treatment with recombinant AAV vectors expressing the human GDE cleared the accumulated glycogen. Discussion: This study describes the first skeletal muscle cell model of GSDIII derived from hiPSCs and establishes a platform to study the mechanisms that contribute to muscle impairments in GSDIII and to assess the therapeutic potential of pharmacological inducers of glycogen degradation or gene therapy approaches.
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Affiliation(s)
- Lucille Rossiaud
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
| | - Pascal Fragner
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
| | - Elena Barbon
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
| | - Antoine Gardin
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
| | - Manon Benabides
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
| | - Emilie Pellier
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
| | | | - Lina El Kassar
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
| | - Karine Giraud-Triboult
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
| | - Xavier Nissan
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
| | - Giuseppe Ronzitti
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
| | - Lucile Hoch
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
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3
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Reinbigler M, Cosette J, Guesmia Z, Jimenez S, Fetita C, Brunet E, Stockholm D. Artificial intelligence workflow quantifying muscle features on Hematoxylin-Eosin stained sections reveals dystrophic phenotype amelioration upon treatment. Sci Rep 2022; 12:19913. [PMID: 36402802 PMCID: PMC9675753 DOI: 10.1038/s41598-022-24139-z] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 11/10/2022] [Indexed: 11/21/2022] Open
Abstract
Cell segmentation is a key step for a wide variety of biological investigations, especially in the context of muscle science. Currently, automated methods still struggle to perform skeletal muscle fiber quantification on Hematoxylin-Eosin (HE) stained histopathological whole slide images due to low contrast. On the other hand, the Deep Learning algorithm Cellpose offers new perspectives considering its increasing adoption for segmentation of a wide range of cells. Combining two open-source tools, Cellpose and QuPath, we developed MyoSOTHES, an automated Myofibers Segmentation wOrkflow Tuned for HE Staining. MyoSOTHES enables solving segmentation inconsistencies encountered by default Cellpose model in presence of large range size cells and provides information related to muscle Feret's diameter distribution and Centrally Nucleated Fibers, thus depicting muscle health and treatment effects. MyoSOTHES achieves high quality segmentation compared to baseline workflow with a detection F1-score increasing from 0.801 to 0.919 and a Root Mean Square Error (RMSE) on diameter improved by 31%. MyoSOTHES was validated on an animal study featuring gene transfer in [Formula: see text]-Sarcoglycanopathy, for which dose-response effect is visible and conclusions drawn are consistent with those previously published. MyoSOTHES thus paves the way for wide quantification of HE stained muscle sections and retrospective analysis of HE labeled slices used in laboratories for decades.
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Affiliation(s)
- Marie Reinbigler
- grid.508893.fTélécom SudParis, Institut Polytechnique de Paris, 91120 Palaiseau, France
| | - Jérémie Cosette
- grid.419946.70000 0004 0641 2700Généthon, 91000 Evry, France
| | - Zoheir Guesmia
- grid.419946.70000 0004 0641 2700Généthon, 91000 Evry, France ,grid.418250.a0000 0001 0308 8843Centre de Recherche en Myologie, UMR-S 974, Institut de Myologie, 75000 Paris, France
| | - Simon Jimenez
- grid.419946.70000 0004 0641 2700Généthon, 91000 Evry, France
| | - Catalin Fetita
- grid.508893.fTélécom SudParis, Institut Polytechnique de Paris, 91120 Palaiseau, France
| | - Elisabeth Brunet
- grid.508893.fTélécom SudParis, Institut Polytechnique de Paris, 91120 Palaiseau, France
| | - Daniel Stockholm
- grid.419946.70000 0004 0641 2700Généthon, 91000 Evry, France ,grid.424469.90000 0001 2195 5365École Pratique des Hautes Études, PSL University, 75000 Paris, France
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4
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Marinello M, Cosette J, Bogni C, Denard J, Stockholm D, Buj-Bello A. Characterization of Neuromuscular Junctions in Mice by Combined Confocal and Super-Resolution Microscopy. J Vis Exp 2021. [PMID: 34958074 DOI: 10.3791/63032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Neuromuscular junctions (NMJs) are highly specialized synapses between lower motor neurons and skeletal muscle fibers that play an essential role in the transmission of molecules from the nervous system to voluntary muscles, leading to contraction. They are affected in many human diseases, including inherited neuromuscular disorders such as Duchenne muscular dystrophy (DMD), congenital myasthenic syndromes (CMS), spinal muscular atrophy (SMA), and amyotrophic lateral sclerosis (ALS). Therefore, monitoring the morphology of neuromuscular junctions and their alterations in disease mouse models represents a valuable tool for pathological studies and preclinical assessment of therapeutic approaches. Here, methods for labeling and analyzing the three-dimensional (3D) morphology of the pre- and postsynaptic parts of motor endplates from murine teased muscle fibers are described. The procedures to prepare samples and measure NMJ volume, area, tortuosity and axon terminal morphology/occupancy by confocal imaging, and the distance between postsynaptic junctional folds and acetylcholine receptor (AChR) stripe width by super-resolution stimulated emission depletion (STED) microscopy are detailed. Alterations in these NMJ parameters are illustrated in mutant mice affected by SMA and CMS.
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Affiliation(s)
- Martina Marinello
- Genethon, 91000, Evry, France; Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, 91000, Evry, France
| | | | - Caroline Bogni
- Genethon, 91000, Evry, France; Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, 91000, Evry, France
| | - Jérôme Denard
- Genethon, 91000, Evry, France; Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, 91000, Evry, France
| | - Daniel Stockholm
- Genethon, 91000, Evry, France; Ecole Pratique des Hautes Etudes, PSL Research University, 75014, Paris, France;
| | - Ana Buj-Bello
- Genethon, 91000, Evry, France; Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare research unit UMR_S951, 91000, Evry, France;
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5
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Bogni C, Girard E, Poulard K, Brochier G, Errazuriz-Cerda E, Cosette J, Labasse C, Madelaine A, Taratuto AL, Messaddeq N, Schaeffer L, Romero N, Buj-Bello A. CONGENITAL MYOPATHIES – NEMALINE MYOPATHIES. Neuromuscul Disord 2021. [DOI: 10.1016/j.nmd.2021.07.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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Biquand A, Spinozzi S, Tonino P, Cosette J, Strom J, Elbeck Z, Knöll R, Granzier H, Lostal W, Richard I. Titin M-line insertion sequence 7 is required for proper cardiac function in mice. J Cell Sci 2021; 134:271843. [PMID: 34401916 DOI: 10.1242/jcs.258684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 03/25/2021] [Accepted: 08/06/2021] [Indexed: 11/20/2022] Open
Abstract
Titin is a giant sarcomeric protein that is involved in a large number of functions, with a primary role in skeletal and cardiac sarcomere organization and stiffness. The titin gene (TTN) is subject to various alternative splicing events, but in the region that is present at the M-line, the only exon that can be spliced out is Mex5, which encodes for the insertion sequence 7 (is7). Interestingly, in the heart, the majority of titin isoforms are Mex5+, suggesting a cardiac role for is7. Here, we performed comprehensive functional, histological, transcriptomic, microscopic and molecular analyses of a mouse model lacking the Ttn Mex5 exon (ΔMex5), and revealed that the absence of the is7 is causative for dilated cardiomyopathy. ΔMex5 mice showed altered cardiac function accompanied by increased fibrosis and ultrastructural alterations. Abnormal expression of excitation-contraction coupling proteins was also observed. The results reported here confirm the importance of the C-terminal region of titin in cardiac function and are the first to suggest a possible relationship between the is7 and excitation-contraction coupling. Finally, these findings give important insights for the identification of new targets in the treatment of titinopathies.
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Affiliation(s)
- Ariane Biquand
- Genethon, 91000 Evry, France.,Université Paris-Saclay, Univ Evry, Inserm, Généthon, Integrare research unit UMR_S951, 91000 Evry-Courcouronnes, France
| | - Simone Spinozzi
- Genethon, 91000 Evry, France.,Université Paris-Saclay, Univ Evry, Inserm, Généthon, Integrare research unit UMR_S951, 91000 Evry-Courcouronnes, France
| | - Paola Tonino
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ 85721, USA
| | | | - Joshua Strom
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ 85721, USA
| | - Zaher Elbeck
- Department of Medicine, Integrated Cardio Metabolic Centre (ICMC), Heart and Vascular Theme, Karolinska Institutet, 141 57 Huddinge, Sweden
| | - Ralph Knöll
- Department of Medicine, Integrated Cardio Metabolic Centre (ICMC), Heart and Vascular Theme, Karolinska Institutet, 141 57 Huddinge, Sweden.,Bioscience Cardiovascular, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZeneca, 431 50 Gothenburg, Sweden
| | - Henk Granzier
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ 85721, USA
| | - William Lostal
- Genethon, 91000 Evry, France.,Université Paris-Saclay, Univ Evry, Inserm, Généthon, Integrare research unit UMR_S951, 91000 Evry-Courcouronnes, France
| | - Isabelle Richard
- Genethon, 91000 Evry, France.,Université Paris-Saclay, Univ Evry, Inserm, Généthon, Integrare research unit UMR_S951, 91000 Evry-Courcouronnes, France
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7
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Marinello M, Denard J, Latournerie V, Bonnin D, Cosette J, Martin S, Buj-Bello A. P.367Comparative analysis of single stranded rAAV vectors expressing human SMN1 in correcting spinal muscular atrophy in mice. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Da Rocha S, Bigot J, Onodi F, Cosette J, Corre G, Poupiot J, Fenard D, Gjata B, Galy A, Neildez-Nguyen TMA. Temporary Reduction of Membrane CD4 with the Antioxidant MnTBAP Is Sufficient to Prevent Immune Responses Induced by Gene Transfer. Mol Ther Methods Clin Dev 2019; 14:285-299. [PMID: 31497619 PMCID: PMC6718808 DOI: 10.1016/j.omtm.2019.06.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 06/29/2019] [Indexed: 12/14/2022]
Abstract
Unexpectedly, the synthetic antioxidant MnTBAP was found to cause a rapid and reversible downregulation of CD4 on T cells in vitro and in vivo. This effect resulted from the internalization of membrane CD4 T cell molecules into clathrin-coated pits and involved disruption of the CD4/p56Lck complex. The CD4 deprivation induced by MnTBAP had functional consequences on CD4-dependent infectious processes or immunological responses as shown in various models, including gene therapy. In cultured human T cells, MnTBAP-induced downregulation of CD4 functionally suppressed gp120- mediated lentiviral transduction in a model relevant for HIV infection. The injection of MnTBAP in mice reduced membrane CD4 on lymphocytes in vivo within 5 days of treatment, preventing OVA peptide T cell immunization while allowing subsequent immunization once treatment was stopped. In a mouse gene therapy model, MnTBAP treatment at the time of adenovirus-associated virus (AAV) vector administration, successfully controlled the induction of anti-transgene and anti-capsid immune responses mediated by CD4+ T cells, enabling the redosing mice with the same vector. These functional data provide new avenues to develop alternative therapeutic immunomodulatory strategies based on temporary regulation of CD4. These could be particularly useful for AAV gene therapy in which novel strategies for redosing are needed.
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Affiliation(s)
- Sylvie Da Rocha
- Ecole Pratique des Hautes Etudes, PSL Research University, INTEGRARE UMR_S951, INSERM, Généthon, Univ-Evry, 91002 Evry, France
| | - Jérémy Bigot
- Ecole Pratique des Hautes Etudes, PSL Research University, INTEGRARE UMR_S951, INSERM, Généthon, Univ-Evry, 91002 Evry, France
| | - Fanny Onodi
- Ecole Pratique des Hautes Etudes, PSL Research University, INTEGRARE UMR_S951, INSERM, Généthon, Univ-Evry, 91002 Evry, France
| | | | - Guillaume Corre
- Ecole Pratique des Hautes Etudes, PSL Research University, INTEGRARE UMR_S951, INSERM, Généthon, Univ-Evry, 91002 Evry, France
| | - Jérôme Poupiot
- Ecole Pratique des Hautes Etudes, PSL Research University, INTEGRARE UMR_S951, INSERM, Généthon, Univ-Evry, 91002 Evry, France
| | - David Fenard
- Ecole Pratique des Hautes Etudes, PSL Research University, INTEGRARE UMR_S951, INSERM, Généthon, Univ-Evry, 91002 Evry, France
| | | | - Anne Galy
- Ecole Pratique des Hautes Etudes, PSL Research University, INTEGRARE UMR_S951, INSERM, Généthon, Univ-Evry, 91002 Evry, France
| | - Thi My Anh Neildez-Nguyen
- Ecole Pratique des Hautes Etudes, PSL Research University, INTEGRARE UMR_S951, INSERM, Généthon, Univ-Evry, 91002 Evry, France
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Vermeer LS, Hamon L, Schirer A, Schoup M, Cosette J, Majdoul S, Pastré D, Stockholm D, Holic N, Hellwig P, Galy A, Fenard D, Bechinger B. Vectofusin-1, a potent peptidic enhancer of viral gene transfer forms pH-dependent α-helical nanofibrils, concentrating viral particles. Acta Biomater 2017; 64:259-268. [PMID: 29017974 DOI: 10.1016/j.actbio.2017.10.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [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: 05/23/2017] [Revised: 10/02/2017] [Accepted: 10/06/2017] [Indexed: 01/13/2023]
Abstract
Gene transfer using lentiviral vectors has therapeutic applications spanning from monogenic and infectious diseases to cancer. Such gene therapy has to be improved by enhancing the levels of viral infection of target cells and/or reducing the amount of lentivirus for greater safety and reduced costs. Vectofusin-1, a recently developed cationic amphipathic peptide with a pronounced capacity to enhance such viral transduction, strongly promotes the entry of several retroviral pseudotypes into target cells when added to the culture medium. To clarify the molecular basis of its action the peptide was investigated on a molecular and a supramolecular level by a variety of biophysical approaches. We show that in culture medium vectofusin-1 rapidly forms complexes in the 10 nm range that further assemble into annular and extended nanofibrils. These associate with viral particles allowing them to be easily pelleted for optimal virus-cell interaction. Thioflavin T fluorescence, circular dichroism and infrared spectroscopies indicate that these fibrils have a unique α-helical structure whereas most other viral transduction enhancers form β-amyloid fibrils. A vectofusin-1 derivative (LAH2-A4) is inefficient in biological assays and does not form nanofibrils, suggesting that supramolecular assembly is essential for transduction enhancement. Our observations define vectofusin-1 as a member of a new class of α-helical enhancers of lentiviral infection. Its fibril formation is reversible which bears considerable advantages in handling the peptide in conditions well-adapted to Good Manufacturing Practices and scalable gene therapy protocols.
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Affiliation(s)
- Louic S Vermeer
- CNRS, Univ. of Strasbourg, Institut de Chimie UMR_7177, Strasbourg, France
| | - Loic Hamon
- INSERM, Univ. of Evry, UMR_S1204, Evry, France
| | | | - Michel Schoup
- CNRS, Univ. of Strasbourg, Institut de Chimie UMR_7177, Strasbourg, France
| | | | - Saliha Majdoul
- Genethon, INSERM, Univ. of Evry, EPHE-PSL Research University, Research Unit Integrare UMR_S951, Evry, France
| | | | - Daniel Stockholm
- Genethon, INSERM, Univ. of Evry, EPHE-PSL Research University, Research Unit Integrare UMR_S951, Evry, France
| | - Nathalie Holic
- Genethon, INSERM, Univ. of Evry, EPHE-PSL Research University, Research Unit Integrare UMR_S951, Evry, France
| | - Petra Hellwig
- CNRS, Univ. of Strasbourg, UMR 7140, Strasbourg, France
| | - Anne Galy
- Genethon, INSERM, Univ. of Evry, EPHE-PSL Research University, Research Unit Integrare UMR_S951, Evry, France
| | | | - Burkhard Bechinger
- CNRS, Univ. of Strasbourg, Institut de Chimie UMR_7177, Strasbourg, France.
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Bellec-Dyèvre J, Lostal W, Bernard E, Cosette J, Richard I. Development of a CRISPR-based gene therapy approach targeting the large exon 45-exon 55 mutation hotspot in DMD gene. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Moussy A, Cosette J, Parmentier R, da Silva C, Corre G, Richard A, Gandrillon O, Stockholm D, Páldi A. Integrated time-lapse and single-cell transcription studies highlight the variable and dynamic nature of human hematopoietic cell fate commitment. PLoS Biol 2017; 15:e2001867. [PMID: 28749943 PMCID: PMC5531424 DOI: 10.1371/journal.pbio.2001867] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 06/23/2017] [Indexed: 11/19/2022] Open
Abstract
Individual cells take lineage commitment decisions in a way that is not necessarily uniform. We address this issue by characterising transcriptional changes in cord blood-derived CD34+ cells at the single-cell level and integrating data with cell division history and morphological changes determined by time-lapse microscopy. We show that major transcriptional changes leading to a multilineage-primed gene expression state occur very rapidly during the first cell cycle. One of the 2 stable lineage-primed patterns emerges gradually in each cell with variable timing. Some cells reach a stable morphology and molecular phenotype by the end of the first cell cycle and transmit it clonally. Others fluctuate between the 2 phenotypes over several cell cycles. Our analysis highlights the dynamic nature and variable timing of cell fate commitment in hematopoietic cells, links the gene expression pattern to cell morphology, and identifies a new category of cells with fluctuating phenotypic characteristics, demonstrating the complexity of the fate decision process (which is different from a simple binary switch between 2 options, as it is usually envisioned). Hematopoietic stem cells are classically defined as a specific category of cells at the top of the hierarchy that can differentiate all blood cell types following step-by-step the instructions of a deterministic program. We have analysed this process, and our findings support a much more dynamic view than previously described. We apply time-lapse microscopy coupled to single-cell molecular analyses in human hematopoietic stem cells and find that fate decision is not a unique, programmed event but a process of spontaneous variation and selective stabilisation reminiscent of trial–error processes. We show that each cell explores (at its own pace and independently of cell division) many different possibilities before reaching a stable combination of genes to be expressed. Our results suggest, therefore, that multipotency seems to be more like a transitory state than a feature of a specific cell category.
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Affiliation(s)
- Alice Moussy
- Ecole Pratique des Hautes Etudes, PSL Research University, UMRS 951, INSERM, Univ-Evry, Evry, France
- Genethon, Evry, France
| | | | | | - Cindy da Silva
- Ecole Pratique des Hautes Etudes, PSL Research University, UMRS 951, INSERM, Univ-Evry, Evry, France
| | | | - Angélique Richard
- Laboratoire de Biologie et de Modélisation de la Cellule, Ecole Normale Supérieure de Lyon, CNRS, Université de Lyon, Lyon, France
| | - Olivier Gandrillon
- Laboratoire de Biologie et de Modélisation de la Cellule, Ecole Normale Supérieure de Lyon, CNRS, Université de Lyon, Lyon, France
| | - Daniel Stockholm
- Ecole Pratique des Hautes Etudes, PSL Research University, UMRS 951, INSERM, Univ-Evry, Evry, France
| | - András Páldi
- Ecole Pratique des Hautes Etudes, PSL Research University, UMRS 951, INSERM, Univ-Evry, Evry, France
- * E-mail:
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Cosette J, Moussy A, Paldi A, Stockholm D. Combination of imaging flow cytometry and time-lapse microscopy for the study of label-free morphology dynamics of hematopoietic cells. Cytometry A 2017; 91:254-260. [DOI: 10.1002/cyto.a.23064] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 12/06/2016] [Accepted: 01/15/2017] [Indexed: 12/27/2022]
Affiliation(s)
| | - Alice Moussy
- Ecole Pratique des Hautes Etudes, PSL Research University, UMRS_951, Genethon; Evry 91002 France
| | - Andras Paldi
- Ecole Pratique des Hautes Etudes, PSL Research University, UMRS_951, Genethon; Evry 91002 France
| | - Daniel Stockholm
- Ecole Pratique des Hautes Etudes, PSL Research University, UMRS_951, Genethon; Evry 91002 France
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Richard A, Boullu L, Herbach U, Bonnafoux A, Morin V, Vallin E, Guillemin A, Papili Gao N, Gunawan R, Cosette J, Arnaud O, Kupiec JJ, Espinasse T, Gonin-Giraud S, Gandrillon O. Single-Cell-Based Analysis Highlights a Surge in Cell-to-Cell Molecular Variability Preceding Irreversible Commitment in a Differentiation Process. PLoS Biol 2016; 14:e1002585. [PMID: 28027290 PMCID: PMC5191835 DOI: 10.1371/journal.pbio.1002585] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 09/22/2016] [Indexed: 12/31/2022] Open
Abstract
In some recent studies, a view emerged that stochastic dynamics governing the switching of cells from one differentiation state to another could be characterized by a peak in gene expression variability at the point of fate commitment. We have tested this hypothesis at the single-cell level by analyzing primary chicken erythroid progenitors through their differentiation process and measuring the expression of selected genes at six sequential time-points after induction of differentiation. In contrast to population-based expression data, single-cell gene expression data revealed a high cell-to-cell variability, which was masked by averaging. We were able to show that the correlation network was a very dynamical entity and that a subgroup of genes tend to follow the predictions from the dynamical network biomarker (DNB) theory. In addition, we also identified a small group of functionally related genes encoding proteins involved in sterol synthesis that could act as the initial drivers of the differentiation. In order to assess quantitatively the cell-to-cell variability in gene expression and its evolution in time, we used Shannon entropy as a measure of the heterogeneity. Entropy values showed a significant increase in the first 8 h of the differentiation process, reaching a peak between 8 and 24 h, before decreasing to significantly lower values. Moreover, we observed that the previous point of maximum entropy precedes two paramount key points: an irreversible commitment to differentiation between 24 and 48 h followed by a significant increase in cell size variability at 48 h. In conclusion, when analyzed at the single cell level, the differentiation process looks very different from its classical population average view. New observables (like entropy) can be computed, the behavior of which is fully compatible with the idea that differentiation is not a “simple” program that all cells execute identically but results from the dynamical behavior of the underlying molecular network. A single-cell transcriptomics analysis offers a new dynamical view of the differentiation process, involving an increase in between-cell variability prior to commitment. The differentiation process has classically been seen as a stereotyped program leading from one progenitor toward a functional cell. This vision was based upon cell population-based analyses averaged over millions of cells. However, new methods have recently emerged that allow interrogation of the molecular content at the single-cell level, challenging this view with a new model suggesting that cell-to-cell gene expression stochasticity could play a key role in differentiation. We took advantage of a physiologically relevant avian cellular model to analyze the expression level of 92 genes in individual cells collected at several time-points during differentiation. We first observed that the process analyzed at the single-cell level is very different and much less well ordered than the population-based average view. Furthermore, we showed that cell-to-cell variability in gene expression peaks transiently before strongly decreasing. This rise in variability precedes two key events: an irreversible commitment to differentiation, followed by a significant increase in cell size variability. Altogether, our results support the idea that differentiation is not a “simple” series of well-ordered molecular events executed identically by all cells in a population but likely results from dynamical behavior of the underlying molecular network.
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Affiliation(s)
- Angélique Richard
- Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS UMR 5239, INSERM U1210, Laboratory of Biology and Modelling of the Cell, 46 allée d’Italie Site Jacques Monod, F-69007, Lyon, France
| | - Loïs Boullu
- Inria Team Dracula, Inria Center Grenoble Rhône-Alpes, France
- Université de Lyon, Université Lyon 1, CNRS UMR 5208, Institut Camille Jordan 43 blvd du 11 novembre 1918, F-69622 Villeurbanne-Cedex, France
- Département de Mathématiques et de statistiques de l’Université de Montréal, Pavillon André-Aisenstadt, 2920, chemin de la Tour, Montréal (Québec) H3T 1J4 Canada
| | - Ulysse Herbach
- Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS UMR 5239, INSERM U1210, Laboratory of Biology and Modelling of the Cell, 46 allée d’Italie Site Jacques Monod, F-69007, Lyon, France
- Inria Team Dracula, Inria Center Grenoble Rhône-Alpes, France
- Université de Lyon, Université Lyon 1, CNRS UMR 5208, Institut Camille Jordan 43 blvd du 11 novembre 1918, F-69622 Villeurbanne-Cedex, France
| | - Arnaud Bonnafoux
- Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS UMR 5239, INSERM U1210, Laboratory of Biology and Modelling of the Cell, 46 allée d’Italie Site Jacques Monod, F-69007, Lyon, France
- Inria Team Dracula, Inria Center Grenoble Rhône-Alpes, France
- The CoSMo company. 5 passage du Vercors – 69007 LYON – France
| | - Valérie Morin
- Univ Lyon, Univ Claude Bernard, CNRS UMR 5310 - INSERM U1217, Institut NeuroMyoGène, F-69622 Villeurbanne-Cedex, France
| | - Elodie Vallin
- Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS UMR 5239, INSERM U1210, Laboratory of Biology and Modelling of the Cell, 46 allée d’Italie Site Jacques Monod, F-69007, Lyon, France
| | - Anissa Guillemin
- Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS UMR 5239, INSERM U1210, Laboratory of Biology and Modelling of the Cell, 46 allée d’Italie Site Jacques Monod, F-69007, Lyon, France
| | - Nan Papili Gao
- Institute for Chemical and Bioengineering, ETH Zurich, Zurich, Switzerland
- Swiss Institute of Bioinformatics, Quartier Sorge - Batiment Genopode, 1015 Lausanne Switzerland
| | - Rudiyanto Gunawan
- Institute for Chemical and Bioengineering, ETH Zurich, Zurich, Switzerland
- Swiss Institute of Bioinformatics, Quartier Sorge - Batiment Genopode, 1015 Lausanne Switzerland
| | - Jérémie Cosette
- Genethon – Institut National de la Santé et de la Recherche Médicale – INSERM, Université d’Evry-Val-d’Essone – 1 rue de l’internationale 91000 Evry, France
| | - Ophélie Arnaud
- RIKEN - Center for Life Science Technologies (Division of Genomic Technologies)—CLST (DGT), 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
| | | | - Thibault Espinasse
- Université de Lyon, Université Lyon 1, CNRS UMR 5208, Institut Camille Jordan 43 blvd du 11 novembre 1918, F-69622 Villeurbanne-Cedex, France
| | - Sandrine Gonin-Giraud
- Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS UMR 5239, INSERM U1210, Laboratory of Biology and Modelling of the Cell, 46 allée d’Italie Site Jacques Monod, F-69007, Lyon, France
| | - Olivier Gandrillon
- Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS UMR 5239, INSERM U1210, Laboratory of Biology and Modelling of the Cell, 46 allée d’Italie Site Jacques Monod, F-69007, Lyon, France
- Inria Team Dracula, Inria Center Grenoble Rhône-Alpes, France
- * E-mail:
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Moussy A, Cosette J, Onodi F, Auffret-Cariou A, Neildez-Nguyen TMA, Paldi A, Stockholm D. 693. Single Cell Dynamics Causes Pareto-Like Effect in Stimulated T Cell Populations. Mol Ther 2016. [DOI: 10.1016/s1525-0016(16)33501-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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El Shafey N, Guesnon M, Simon F, Deprez E, Cosette J, Stockholm D, Scherman D, Bigey P, Kichler A. Inhibition of the myostatin/Smad signaling pathway by short decorin-derived peptides. Exp Cell Res 2016; 341:187-95. [PMID: 26844629 DOI: 10.1016/j.yexcr.2016.01.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 01/27/2016] [Accepted: 01/31/2016] [Indexed: 02/06/2023]
Abstract
Myostatin, also known as growth differentiation factor 8, is a member of the transforming growth factor-beta superfamily that has been shown to play a key role in the regulation of the skeletal muscle mass. Indeed, while myostatin deletion or loss of function induces muscle hypertrophy, its overexpression or systemic administration causes muscle atrophy. Since myostatin blockade is effective in increasing skeletal muscle mass, myostatin inhibitors have been actively sought after. Decorin, a member of the small leucine-rich proteoglycan family is a metalloprotein that was previously shown to bind and inactivate myostatin in a zinc-dependent manner. Furthermore, the myostatin-binding site has been shown to be located in the decorin N-terminal domain. In the present study, we investigated the anti-myostatin activity of short and soluble fragments of decorin. Our results indicate that the murine decorin peptides DCN48-71 and 42-65 are sufficient for inactivating myostatin in vitro. Moreover, we show that the interaction of mDCN48-71 to myostatin is strictly zinc-dependent. Binding of myostatin to activin type II receptor results in the phosphorylation of Smad2/3. Addition of the decorin peptide 48-71 decreased in a dose-dependent manner the myostatin-induced phosphorylation of Smad2 demonstrating thereby that the peptide inhibits the activation of the Smad signaling pathway. Finally, we found that mDCN48-71 displays a specificity towards myostatin, since it does not inhibit other members of the transforming growth factor-beta family.
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Affiliation(s)
- Nelly El Shafey
- Unité de Technologies Chimiques et Biologiques pour la Santé, CNRS UMR8258-Inserm, U1022 - Université Paris Descartes, Chimie ParisTech, 75006 Paris, France
| | - Mickaël Guesnon
- Unité de Technologies Chimiques et Biologiques pour la Santé, CNRS UMR8258-Inserm, U1022 - Université Paris Descartes, Chimie ParisTech, 75006 Paris, France
| | - Françoise Simon
- Laboratoire de Biologie et Pharmacologie Appliquée, ENS Cachan, UMR8113 CNRS, IDA FR3242, 94230 Cachan, France
| | - Eric Deprez
- Laboratoire de Biologie et Pharmacologie Appliquée, ENS Cachan, UMR8113 CNRS, IDA FR3242, 94230 Cachan, France
| | - Jérémie Cosette
- Inserm, UMR 951, Université d'Evry Val d'Essonne, Genethon, 91000 Evry, France
| | - Daniel Stockholm
- Inserm, UMR 951, Université d'Evry Val d'Essonne, Genethon, 91000 Evry, France
| | - Daniel Scherman
- Unité de Technologies Chimiques et Biologiques pour la Santé, CNRS UMR8258-Inserm, U1022 - Université Paris Descartes, Chimie ParisTech, 75006 Paris, France
| | - Pascal Bigey
- Unité de Technologies Chimiques et Biologiques pour la Santé, CNRS UMR8258-Inserm, U1022 - Université Paris Descartes, Chimie ParisTech, 75006 Paris, France
| | - Antoine Kichler
- Unité de Technologies Chimiques et Biologiques pour la Santé, CNRS UMR8258-Inserm, U1022 - Université Paris Descartes, Chimie ParisTech, 75006 Paris, France; Laboratoire de Conception et Application de Molécules Bioactives UMR7199 CNRS-Université de Strasbourg, LabEx Medalis, Faculté de Pharmacie, 67401 Illkirch, France.
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16
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Cosette J, Moussy A, Onodi F, Auffret-Cariou A, Neildez-Nguyen TMA, Paldi A, Stockholm D. Single Cell Dynamics Causes Pareto-Like Effect in Stimulated T Cell Populations. Sci Rep 2015; 5:17756. [PMID: 26648396 PMCID: PMC4673432 DOI: 10.1038/srep17756] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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] [Received: 07/16/2015] [Accepted: 10/27/2015] [Indexed: 01/26/2023] Open
Abstract
Cell fate choice during the process of differentiation may obey to deterministic or stochastic rules. In order to discriminate between these two strategies we used time-lapse microscopy of individual murine CD4 + T cells that allows investigating the dynamics of proliferation and fate commitment. We observed highly heterogeneous division and death rates between individual clones resulting in a Pareto-like dominance of a few clones at the end of the experiment. Commitment to the Treg fate was monitored using the expression of a GFP reporter gene under the control of the endogenous Foxp3 promoter. All possible combinations of proliferation and differentiation were observed and resulted in exclusively GFP–, GFP+ or mixed phenotype clones of very different population sizes. We simulated the process of proliferation and differentiation using a simple mathematical model of stochastic decision-making based on the experimentally observed parameters. The simulations show that a stochastic scenario is fully compatible with the observed Pareto-like imbalance in the final population.
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Affiliation(s)
| | - Alice Moussy
- Ecole Pratique des Hautes Etudes, Paris, France.,Unit INSERM INTEGRARE UMRS 951-UEVE-EPHE, 91000 Evry, France
| | - Fanny Onodi
- Genethon, 1bis rue de l'Internationale, 91000 Evry, France.,Unit INSERM INTEGRARE UMRS 951-UEVE-EPHE, 91000 Evry, France
| | - Adrien Auffret-Cariou
- Genethon, 1bis rue de l'Internationale, 91000 Evry, France.,Unit INSERM INTEGRARE UMRS 951-UEVE-EPHE, 91000 Evry, France
| | - Thi My Anh Neildez-Nguyen
- Ecole Pratique des Hautes Etudes, Paris, France.,Unit INSERM INTEGRARE UMRS 951-UEVE-EPHE, 91000 Evry, France
| | - Andras Paldi
- Unit INSERM INTEGRARE UMRS 951-UEVE-EPHE, 91000 Evry, France.,Ecole Pratique des Hautes Etudes, Paris, France
| | - Daniel Stockholm
- Ecole Pratique des Hautes Etudes, Paris, France.,Unit INSERM INTEGRARE UMRS 951-UEVE-EPHE, 91000 Evry, France.,Genethon, 1bis rue de l'Internationale, 91000 Evry, France
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Rouillon J, Poupiot J, Zocevic A, Amor F, Léger T, Garcia C, Camadro JM, Wong B, Pinilla R, Cosette J, Coenen-Stass AML, Mcclorey G, Roberts TC, Wood MJA, Servais L, Udd B, Voit T, Richard I, Svinartchouk F. Serum proteomic profiling reveals fragments of MYOM3 as potential biomarkers for monitoring the outcome of therapeutic interventions in muscular dystrophies. Hum Mol Genet 2015; 24:4916-32. [PMID: 26060189 PMCID: PMC4527491 DOI: 10.1093/hmg/ddv214] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [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: 04/24/2015] [Accepted: 06/04/2015] [Indexed: 12/24/2022] Open
Abstract
Therapy-responsive biomarkers are an important and unmet need in the muscular dystrophy field where new treatments are currently in clinical trials. By using a comprehensive high-resolution mass spectrometry approach and western blot validation, we found that two fragments of the myofibrillar structural protein myomesin-3 (MYOM3) are abnormally present in sera of Duchenne muscular dystrophy (DMD) patients, limb-girdle muscular dystrophy type 2D (LGMD2D) and their respective animal models. Levels of MYOM3 fragments were assayed in therapeutic model systems: (1) restoration of dystrophin expression by antisense oligonucleotide-mediated exon-skipping in mdx mice and (2) stable restoration of α-sarcoglycan expression in KO-SGCA mice by systemic injection of a viral vector. Following administration of the therapeutic agents MYOM3 was restored toward wild-type levels. In the LGMD model, where different doses of vector were used, MYOM3 restoration was dose-dependent. MYOM3 fragments showed lower inter-individual variability compared with the commonly used creatine kinase assay, and correlated better with the restoration of the dystrophin-associated protein complex and muscle force. These data suggest that the MYOM3 fragments hold promise for minimally invasive assessment of experimental therapies for DMD and other neuromuscular disorders.
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Affiliation(s)
| | | | | | | | - Thibaut Léger
- Mass spectrometry Laboratory, Institut Jacques Monod, UMR 7592, University Paris Diderot, CNRS, Sorbonne Paris Cité, F-75205 Paris, France
| | - Camille Garcia
- Mass spectrometry Laboratory, Institut Jacques Monod, UMR 7592, University Paris Diderot, CNRS, Sorbonne Paris Cité, F-75205 Paris, France
| | - Jean-Michel Camadro
- Mass spectrometry Laboratory, Institut Jacques Monod, UMR 7592, University Paris Diderot, CNRS, Sorbonne Paris Cité, F-75205 Paris, France
| | - Brenda Wong
- Division of Pediatric Neurology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | | | | | | | - Graham Mcclorey
- Department of Physiology, Anatomy and Genetics Oxford, Oxford, OX1 3QX, UK
| | - Thomas C Roberts
- Department of Physiology, Anatomy and Genetics Oxford, Oxford, OX1 3QX, UK, Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Matthew J A Wood
- Department of Physiology, Anatomy and Genetics Oxford, Oxford, OX1 3QX, UK
| | - Laurent Servais
- Service of Clinical Trials and Databases, Institut de Myologie, Paris, France
| | - Bjarne Udd
- Folkhälsan Institute of Genetics and Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Thomas Voit
- UPMC Inserm, UMRS 974, CNRS FRE 3617, Paris, France, Université Pierre et Marie Curie- Paris 6, Institut de Myologie, GH Pitié-Salpêtrière, Paris, France and
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Ben Abdelwahed R, Donnou S, Ouakrim H, Crozet L, Cosette J, Jacquet A, Tourais I, Fournès B, Gillard Bocquet M, Miloudi A, Touitou V, Daussy C, Naud MC, Fridman WH, Sautès-Fridman C, Urbain R, Fisson S. Preclinical Study of Ublituximab, a Glycoengineered Anti-Human CD20 Antibody, in Murine Models of Primary Cerebral and Intraocular B-Cell Lymphomas. ACTA ACUST UNITED AC 2013; 54:3657-65. [DOI: 10.1167/iovs.12-10316] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Rym Ben Abdelwahed
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS872, Centre de Recherche des Cordeliers, Paris, France
| | - Sabrina Donnou
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS872, Centre de Recherche des Cordeliers, Paris, France
| | - Hanane Ouakrim
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS872, Centre de Recherche des Cordeliers, Paris, France
| | - Lucile Crozet
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS872, Centre de Recherche des Cordeliers, Paris, France
| | - Jérémie Cosette
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS872, Centre de Recherche des Cordeliers, Paris, France
| | - Alexandra Jacquet
- Laboratoire français du Fractionnement et des Biotechnologies (LFB), Les Ulis, France
| | - Isabel Tourais
- Laboratoire français du Fractionnement et des Biotechnologies (LFB), Les Ulis, France
| | - Bénédicte Fournès
- Laboratoire français du Fractionnement et des Biotechnologies (LFB), Les Ulis, France
| | - Mélanie Gillard Bocquet
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS872, Centre de Recherche des Cordeliers, Paris, France
| | - Amine Miloudi
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS872, Centre de Recherche des Cordeliers, Paris, France
| | - Valérie Touitou
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS872, Centre de Recherche des Cordeliers, Paris, France 6Département d'Ophtalmologie, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - Cécile Daussy
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS872, Centre de Recherche des Cordeliers, Paris, France
| | - Marie-Christine Naud
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS872, Centre de Recherche des Cordeliers, Paris, France
| | - Wolf Herman Fridman
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS872, Centre de Recherche des Cordeliers, Paris, France
| | - Catherine Sautès-Fridman
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS872, Centre de Recherche des Cordeliers, Paris, France
| | - Rémi Urbain
- Laboratoire français du Fractionnement et des Biotechnologies (LFB), Les Ulis, France
| | - Sylvain Fisson
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS872, Centre de Recherche des Cordeliers, Paris, France 7Généthon, Evry, France
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Ben Abdelwahed R, Cosette J, Donnou S, Crozet L, Ouakrim H, Fridman WH, Sautès-Fridman C, Mahjoub A, Fisson S. Lymphoma B-cell responsiveness to CpG-DNA depends on the tumor microenvironment. J Exp Clin Cancer Res 2013; 32:18. [PMID: 23561041 PMCID: PMC3623776 DOI: 10.1186/1756-9966-32-18] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [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: 12/22/2012] [Accepted: 03/30/2013] [Indexed: 11/30/2022] Open
Abstract
Background Toll-like receptor (TLR) agonists have important properties that can be exploited for immunotherapy against tumors. Locally injected immunostimulatory oligodeoxynucleotides containing CpG motifs (CpG-ODNs), which are TLR9 agonists, have shown promise in cancer models. Several studies have demonstrated that these motifs have immunologic effects similar to those of bacterial DNA and can stimulate monocytes, macrophages, dendritic, and B cells, which then produce several proinflammatory cytokines. However, these CpG-ODNs appear to produce opposite effects on tumor B cells. Methods In this study, we investigated the direct effects of a murine class B CpG (1826) ODNs on lymphoma B cells in vitro and in vivo, using mouse models of non-Hodgkin B lymphomas developing in immunoprivileged sites, specifically the brain and the eye, and in subcutaneous sites. Results In vitro, CpG-ODNs produced antiproliferative and proapoptotic effects on lymphoma B cells. In vivo, it had an antitumor effect when injected into tumors in murine models of subcutaneous lymphoma (SCL) and primary cerebral lymphoma (PCL). However, its intravitreal administration into a primary intraocular lymphoma (PIOL) mouse model did not produce an antitumor effect. In vitro experiments using supernatant from mouse PIOL samples demonstrated that the PIOL molecular microenvironment inhibits the antiproliferative effect of CpG-ODNs on lymphoma B-cells. Conclusions Responsiveness to CpG stimulation differs in subcutaneous, cerebral, and ocular tumors, according to the tumoral and molecular microenvironment, and this should be considered for further therapeutic approaches.
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Affiliation(s)
- Rym Ben Abdelwahed
- Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS872, Centre de Recherche des Cordeliers, Paris, France
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