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Boudiffa M, Wade-Gueye NM, Guignandon A, Vanden-Bossche A, Sabido O, Aubin JE, Jurdic P, Vico L, Lafage-Proust MH, Malaval L. Bone Sialoprotein Deficiency Impairs Osteoclastogenesis and Mineral Resorption In Vitro. J Bone Miner Res 2020; 35:1617. [PMID: 32790164 DOI: 10.1002/jbmr.4094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 05/12/2020] [Indexed: 11/11/2022]
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2
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Maurin J, Morel A, Hassen-Khodja C, Vives V, Jurdic P, Machuca-Gayet I, Blangy A. Combined strategy of siRNA and osteoclast actin cytoskeleton automated imaging to identify novel regulators of bone resorption shows a non-mitotic function for anillin. Eur J Cell Biol 2018; 97:568-579. [DOI: 10.1016/j.ejcb.2018.10.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 09/17/2018] [Accepted: 10/17/2018] [Indexed: 11/30/2022] Open
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3
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Georgess D, Spuul P, Le Clainche C, Le Nihouannen D, Fremaux I, Dakhli T, Delannoy López DM, Deffieux D, Jurdic P, Quideau S, Génot E. Anti-osteoclastic effects of C-glucosidic ellagitannins mediated by actin perturbation. Eur J Cell Biol 2018; 97:533-545. [PMID: 30287085 DOI: 10.1016/j.ejcb.2018.09.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 12/19/2017] [Revised: 08/22/2018] [Accepted: 09/18/2018] [Indexed: 12/18/2022] Open
Abstract
Actin subunits assemble into actin filaments whose dynamics and three-dimensional architectures are further regulated by a variety of cellular factors to establish the functional actin cytoskeleton. The C-glucosidic ellagitannin vescalagin and its simpler analogue vescalin, affect both the dynamics and the ultrastructure of the actin cytoskeleton by directly binding to F-actin. Herein, we show that in vitro, the two compounds induce the formation of distinct F-actin networks characterized by different superstructures and dynamics. In living mature osteoclasts, highly specialized bone-degrading cells that constantly remodel their cytoskeleton, vescalagin and vescalin alter actin dynamics at podosomes and compromise the integrity of the podosome belt that forms the bone-degrading apparatus. Both compounds target the bone-resorbing activity at concentrations that preserve osteoclastic maturation and survival and with no detectable impact on the behaviour of bone-forming osteoblastic cells. This anti-osteoclastic activity of vescalagin and vescalin reveals the potential of targeting actin dynamics as a new therapeutic opportunity and, in this case, as a plausible approach for the local treatment of osteoporosis.
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Affiliation(s)
- Dan Georgess
- Institut de Génomique Fonctionnelle de Lyon, (ENS-UMR 5242), Université de Lyon, F-69007, Lyon Cedex, France
| | - Pirjo Spuul
- Centre de Recherche Cardio-Thoracique de Bordeaux (INSERM U1045), Université de Bordeaux, F-33076, Bordeaux Cedex, France; Department of Chemistry and Biotechnology, Division of Gene Technology, Tallinn University of Technology, 12618, Tallinn, Estonia
| | - Christophe Le Clainche
- Institute for Integrative Biology of the Cell, CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, F-91198, Gif-sur-Yvette Cedex, France
| | - Damien Le Nihouannen
- Inserm U1026, University of Bordeaux, Tissue Bioengineering, U1026, F-33076 Bordeaux, France
| | - Isabelle Fremaux
- Centre de Recherche Cardio-Thoracique de Bordeaux (INSERM U1045), Université de Bordeaux, F-33076, Bordeaux Cedex, France
| | - Thierry Dakhli
- European Institute of Chemistry and Biology, (UMS 3033/US 001), Université de Bordeaux, 33607 Pessac Cedex, F-33607, France
| | | | - Denis Deffieux
- Institut des Sciences Moléculaires (CNRS-UMR 5255), Université de Bordeaux, Talence Cedex, F-33405, France
| | - Pierre Jurdic
- Institut de Génomique Fonctionnelle de Lyon, (ENS-UMR 5242), Université de Lyon, F-69007, Lyon Cedex, France
| | - Stéphane Quideau
- Institut des Sciences Moléculaires (CNRS-UMR 5255), Université de Bordeaux, Talence Cedex, F-33405, France.
| | - Elisabeth Génot
- Centre de Recherche Cardio-Thoracique de Bordeaux (INSERM U1045), Université de Bordeaux, F-33076, Bordeaux Cedex, France.
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Pernelle K, Imbert L, Bosser C, Auregan JC, Cruel M, Ogier A, Jurdic P, Hoc T. Microscale mechanical and mineral heterogeneity of human cortical bone governs osteoclast activity. Bone 2017; 94:42-49. [PMID: 27725316 DOI: 10.1016/j.bone.2016.10.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 09/22/2016] [Accepted: 10/06/2016] [Indexed: 01/22/2023]
Abstract
Human cortical bone permanently remodels itself resulting in a haversian microstructure with heterogeneous mechanical and mineral properties. Remodeling is carried out by a subtle equilibrium between bone formation by osteoblasts and bone degradation by osteoclasts. The mechanisms regulating osteoclast activity were studied using easy access supports whose homogeneous microstructures differ from human bone microstructure. In the current study, we show that human osteoclasts resorb human cortical bone non-randomly with respect to this specific human bone microstructural heterogeneity. The characterization of this new resorption profile demonstrates that osteoclasts preferentially resorb particular osteons that have weak mechanical properties and mineral contents and that contain small hydroxyapatite crystals with a high carbonate content. Therefore, the influence of human bone microstructure heterogeneity on osteoclast activity could be a key parameter for osteoclast behaviour, for both in vitro and clinical studies.
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Affiliation(s)
- K Pernelle
- LTDS UMR CNRS 5513, Ecole Centrale Lyon, 36 avenue Guy de Collongue, 69134 Ecully, France; Institut de Génomique Fonctionnelle de Lyon UMR5242, Université de Lyon, CNRS, Ecole Normale Supérieure de Lyon, 46, allée d'Italie, 69364 Lyon cedex 07, France
| | - L Imbert
- LTDS UMR CNRS 5513, Ecole Centrale Lyon, 36 avenue Guy de Collongue, 69134 Ecully, France; Mineralized Tissues Laboratory, Hospital for Special Surgery, New York, NY, United States
| | - C Bosser
- LTDS UMR CNRS 5513, Ecole Centrale Lyon, 36 avenue Guy de Collongue, 69134 Ecully, France
| | - J-C Auregan
- LTDS UMR CNRS 5513, Ecole Centrale Lyon, 36 avenue Guy de Collongue, 69134 Ecully, France; Département de l'Orthopédie pédiatrique, Necker-Hopital des enfants Malades, AP-HP, Paris Descartes, 145 rue de Sèvres, 75014 Paris, France
| | - M Cruel
- LTDS UMR CNRS 5513, Ecole Centrale Lyon, 36 avenue Guy de Collongue, 69134 Ecully, France
| | - A Ogier
- LTDS UMR CNRS 5513, Ecole Centrale Lyon, 36 avenue Guy de Collongue, 69134 Ecully, France
| | - P Jurdic
- Institut de Génomique Fonctionnelle de Lyon UMR5242, Université de Lyon, CNRS, Ecole Normale Supérieure de Lyon, 46, allée d'Italie, 69364 Lyon cedex 07, France
| | - T Hoc
- LTDS UMR CNRS 5513, Ecole Centrale Lyon, 36 avenue Guy de Collongue, 69134 Ecully, France.
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Abstract
Osteoclasts are the cells responsible for physiological bone resorption. A specific organization of their most prominent cytoskeletal structures, podosomes, is crucial for the degradation of mineralized bone matrix. Each podosome is constituted of an F-actin-enriched central core surrounded by a loose F-actin network, called the podosome cloud. In addition to intrinsic actin dynamics, podosomes are defined by their adhesion to the extracellular matrix, mainly via core-linking CD44 and cloud-linking integrins. These properties allow podosomes to collectively evolve into different patterns implicated in migration and bone resorption. Indeed, to resorb bone, osteoclasts polarize, actively secrete protons, and proteases into the resorption pit where these molecules are confined by a podosome-containing sealing zone. Here, we review recent advancements on podosome structure and regulatory pathways in osteoclasts. We also discuss the distinct functions of different podosome patterns during the lifespan of a single osteoclast.
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Affiliation(s)
- Dan Georgess
- Institut de Génomique Fonctionnelle de Lyon; Université de Lyon; Ecole Normale Supérieure de Lyon; Lyon, France
| | - Irma Machuca-Gayet
- Institut de Génomique Fonctionnelle de Lyon; Université de Lyon; Ecole Normale Supérieure de Lyon; Lyon, France
| | - Anne Blangy
- Centre de Recherche de Biochimie Macromoléculaire; CNRS UMR 5237; Montpellier University; Montpellier, France
| | - Pierre Jurdic
- Institut de Génomique Fonctionnelle de Lyon; Université de Lyon; Ecole Normale Supérieure de Lyon; Lyon, France
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6
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Allard L, Demoncheaux N, Machuca-Gayet I, Georgess D, Coury-Lucas F, Jurdic P, Bacchetta J. Biphasic Effects of Vitamin D and FGF23 on Human Osteoclast Biology. Calcif Tissue Int 2015; 97:69-79. [PMID: 25987164 DOI: 10.1007/s00223-015-0013-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 05/08/2015] [Indexed: 01/17/2023]
Abstract
Vitamin D and FGF23 play a major role in calcium/phosphate balance. Vitamin D may control bone resorption but the potential role of FGF23 has never been evaluated. The objective of this study was therefore to compare the effects of vitamin D and FGF23 on osteoclast differentiation and activity in human monocyte-derived osteoclasts. Human monocytes, purified from blood of healthy donors, were incubated with M-CSF and RANKL to obtain mature multinucleated osteoclasts (MNC). Experiments were carried out to assess the effects of FGF23 as compared to native vitamin D (25-D) and active vitamin D (1,25-D) on osteoclast differentiation and on bone-resorbing osteoclast activity. Additional experiments with the pan fibroblast growth factor receptor inhibitor (FGFR-i) were performed. Phosphorylation Akt and Erk pathways were analyzed by Western blot analyses. Both 1,25-D and FGF23, to a lesser extent, significantly inhibited osteoclastogenesis at early stages; when adding FGFR-i, osteoclast formation was restored. Biochemical experiments showed an activation of the Akt and Erk pathways under FGF23 treatment. In contrast, in terms of activity, 1,25-D had no effect on resorption, whereas FGF23 slightly but significantly increased bone resorption; 25-D had no effects on either differentiation or on activity. These data show that 1,25-D inhibits osteoclastogenesis without regulating osteoclast-mediated bone resorption activity; FGF23 has biphasic effects on osteoclast physiology, inhibiting osteoclast formation while stimulating slightly osteoclast activity. These results may be of importance and taken into account in chronic kidney disease when therapies modulating FGF23 are available.
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Affiliation(s)
- Lise Allard
- Institut de Génomique Fonctionnelle de Lyon, ENS UMR 5242, Université de Lyon, Lyon, France
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7
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Trouillet-Assant S, Gallet M, Nauroy P, Rasigade JP, Flammier S, Parroche P, Marvel J, Ferry T, Vandenesch F, Jurdic P, Laurent F. Dual impact of live Staphylococcus aureus on the osteoclast lineage, leading to increased bone resorption. J Infect Dis 2014; 211:571-81. [PMID: 25006047 DOI: 10.1093/infdis/jiu386] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Bone and joint infection, mainly caused by Staphylococcus aureus, is associated with significant morbidity and mortality, characterized by severe inflammation and progressive bone destruction. Studies mostly focused on the interaction between S. aureus and osteoblasts, the bone matrix-forming cells, while interactions between S. aureus and osteoclasts, the only cells known to be able to degrade bone, have been poorly explored. METHODS We developed an in vitro infection model of primary murine osteoclasts to study the direct impact of live S. aureus on osteoclastogenesis and osteoclast resorption activity. RESULTS Staphylococcal infection of bone marrow-derived osteoclast precursors induced their differentiation into activated macrophages that actively secreted proinflammatory cytokines. These cytokines enhanced the bone resorption capacity of uninfected mature osteoclasts and promoted osteoclastogenesis of the uninfected precursors at the site of infection. Moreover, infection of mature osteoclasts by live S. aureus directly enhanced their ability to resorb bone by promoting cellular fusion. CONCLUSIONS Our results highlighted two complementary mechanisms involved in bone loss during bone and joint infection, suggesting that osteoclasts could be a pivotal target for limiting bone destruction.
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Affiliation(s)
- Sophie Trouillet-Assant
- Hospices Civils de Lyon CIRI, International Center for Infectiology Research, University of Lyon Inserm U1111 Ecole Normale Supérieure de Lyon University of Lyon 1 CNRS, UMR5308
| | - Marlène Gallet
- Ecole Normale Supérieure de Lyon University of Lyon 1 CNRS, UMR5308 Institut de Génomique Fonctionnelle de Lyon, France
| | - Pauline Nauroy
- Ecole Normale Supérieure de Lyon University of Lyon 1 CNRS, UMR5308 Institut de Génomique Fonctionnelle de Lyon, France
| | - Jean-Philippe Rasigade
- Hospices Civils de Lyon CIRI, International Center for Infectiology Research, University of Lyon Inserm U1111 Ecole Normale Supérieure de Lyon University of Lyon 1 CNRS, UMR5308
| | - Sacha Flammier
- Hospices Civils de Lyon CIRI, International Center for Infectiology Research, University of Lyon Inserm U1111 Ecole Normale Supérieure de Lyon University of Lyon 1 CNRS, UMR5308
| | - Peggy Parroche
- CIRI, International Center for Infectiology Research, University of Lyon Inserm U1111 Ecole Normale Supérieure de Lyon University of Lyon 1 CNRS, UMR5308
| | - Jacqueline Marvel
- CIRI, International Center for Infectiology Research, University of Lyon Inserm U1111 Ecole Normale Supérieure de Lyon University of Lyon 1 CNRS, UMR5308
| | - Tristan Ferry
- Hospices Civils de Lyon CIRI, International Center for Infectiology Research, University of Lyon Inserm U1111 Ecole Normale Supérieure de Lyon University of Lyon 1 CNRS, UMR5308
| | - Francois Vandenesch
- Hospices Civils de Lyon CIRI, International Center for Infectiology Research, University of Lyon Inserm U1111 Ecole Normale Supérieure de Lyon University of Lyon 1 CNRS, UMR5308
| | - Pierre Jurdic
- Ecole Normale Supérieure de Lyon University of Lyon 1 CNRS, UMR5308 Institut de Génomique Fonctionnelle de Lyon, France
| | - Frederic Laurent
- Hospices Civils de Lyon CIRI, International Center for Infectiology Research, University of Lyon Inserm U1111 Ecole Normale Supérieure de Lyon University of Lyon 1 CNRS, UMR5308
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8
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Morito N, Yoh K, Yamagata K, Allard L, Demoncheaux N, Machuca-Gayet I, Georgess D, Mazzorana M, Jurdic P, Bacchetta J, Jankowski V, Schuchardt M, Van Der Giet M, Zidek W, Jankowski J, Egidi MF, Mangione E, Poletti R, Passino C, Caprioli R, Lippi A, Del Torto A, Emdin M, Lin MC, Chan CK, Wu VC, O. Neill J, Healy V, Johns EJ, Lin MC, Wu VC, Beilhack GF, Kotzmann H, Heinze G, Kohl M, Luger A, Schmidt A, Gohel K, Saurin D, Hegde U, Gang S, Rajapurkar M, Cho H, Kim SB, Sonikian M, Giakoumis M, Pani I, Karaitianou A, Trovas G, Hiramitsu T, Yamamoto T, Tominaga Y. HORMONES. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu163] [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: 11/14/2022] Open
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9
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Allard L, Demoncheaux N, Machuca-Gayet I, Georgess D, Mazzorana M, Jurdic P, Bacchetta J. SFRP CO-12 – Effets de la vitamine D active et du FGF23 sur l’ostéoclaste humain. Arch Pediatr 2014. [DOI: 10.1016/s0929-693x(14)72250-x] [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: 11/16/2022]
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10
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David M, Machuca-Gayet I, Kikuta J, Ottewell P, Mima F, Leblanc R, Bonnelye E, Ribeiro J, Holen I, Vales RL, Jurdic P, Chun J, Clézardin P, Ishii M, Peyruchaud O. Lysophosphatidic acid receptor type 1 (LPA1) plays a functional role in osteoclast differentiation and bone resorption activity. J Biol Chem 2014; 289:6551-6564. [PMID: 24429286 DOI: 10.1074/jbc.m113.533232] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Lysophosphatidic acid (LPA) is a natural bioactive lipid that acts through six different G protein-coupled receptors (LPA1-6) with pleiotropic activities on multiple cell types. We have previously demonstrated that LPA is necessary for successful in vitro osteoclastogenesis of bone marrow cells. Bone cells controlling bone remodeling (i.e. osteoblasts, osteoclasts, and osteocytes) express LPA1, but delineating the role of this receptor in bone remodeling is still pending. Despite Lpar1(-/-) mice displaying a low bone mass phenotype, we demonstrated that bone marrow cell-induced osteoclastogenesis was reduced in Lpar1(-/-) mice but not in Lpar2(-/-) and Lpar3(-/-) animals. Expression of LPA1 was up-regulated during osteoclastogenesis, and LPA1 antagonists (Ki16425, Debio0719, and VPC12249) inhibited osteoclast differentiation. Blocking LPA1 activity with Ki16425 inhibited expression of nuclear factor of activated T-cell cytoplasmic 1 (NFATc1) and dendritic cell-specific transmembrane protein and interfered with the fusion but not the proliferation of osteoclast precursors. Similar to wild type osteoclasts treated with Ki16425, mature Lpar1(-/-) osteoclasts had reduced podosome belt and sealing zone resulting in reduced mineralized matrix resorption. Additionally, LPA1 expression markedly increased in the bone of ovariectomized mice, which was blocked by bisphosphonate treatment. Conversely, systemic treatment with Debio0719 prevented ovariectomy-induced cancellous bone loss. Moreover, intravital multiphoton microscopy revealed that Debio0719 reduced the retention of CX3CR1-EGFP(+) osteoclast precursors in bone by increasing their mobility in the bone marrow cavity. Overall, our results demonstrate that LPA1 is essential for in vitro and in vivo osteoclast activities. Therefore, LPA1 emerges as a new target for the treatment of diseases associated with excess bone loss.
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Affiliation(s)
- Marion David
- INSERM, UMR1033, UCB Lyon 1, Faculté de Médecine Lyon Est, 69732 Lyon, France
| | - Irma Machuca-Gayet
- CNRS, UMR5242, ENS, Équipe Biologie Cellulaire et Physiopathologie Osseuse, Institut de Génomique Fonctionnelle de Lyon, UCB Lyon 1, 69007 Lyon, France
| | - Junichi Kikuta
- Department of Immunology and Cell Biology, Graduate School of Medicine and Frontier Biosciences, Osaka University, 565-0871 Osaka, Japan; CREST, Japan Science and Technology Agency, 102-0076 Tokyo, Japan
| | - Penelope Ottewell
- Academic Unit of Clinical Oncology, University of Sheffield Medical School, Beech Hill Road, S10 2RX Sheffield, United Kingdom
| | - Fuka Mima
- Department of Immunology and Cell Biology, Graduate School of Medicine and Frontier Biosciences, Osaka University, 565-0871 Osaka, Japan; CREST, Japan Science and Technology Agency, 102-0076 Tokyo, Japan
| | - Raphael Leblanc
- INSERM, UMR1033, UCB Lyon 1, Faculté de Médecine Lyon Est, 69732 Lyon, France
| | - Edith Bonnelye
- INSERM, UMR1033, UCB Lyon 1, Faculté de Médecine Lyon Est, 69732 Lyon, France
| | - Johnny Ribeiro
- INSERM, UMR1033, UCB Lyon 1, Faculté de Médecine Lyon Est, 69732 Lyon, France
| | - Ingunn Holen
- Academic Unit of Clinical Oncology, University of Sheffield Medical School, Beech Hill Road, S10 2RX Sheffield, United Kingdom
| | - Rùben Lopez Vales
- Grup de Neuroplasticitat i Regeneració, Unitat de Fisiologia Mèdica, Facultat de Medicina, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
| | - Pierre Jurdic
- CNRS, UMR5242, ENS, Équipe Biologie Cellulaire et Physiopathologie Osseuse, Institut de Génomique Fonctionnelle de Lyon, UCB Lyon 1, 69007 Lyon, France
| | - Jerold Chun
- Department of Molecular Biology, Dorris Neuroscience Center, The Scripps Research Institute, La Jolla, California 92037
| | - Philippe Clézardin
- INSERM, UMR1033, UCB Lyon 1, Faculté de Médecine Lyon Est, 69732 Lyon, France
| | - Masaru Ishii
- Department of Immunology and Cell Biology, Graduate School of Medicine and Frontier Biosciences, Osaka University, 565-0871 Osaka, Japan; CREST, Japan Science and Technology Agency, 102-0076 Tokyo, Japan
| | - Olivier Peyruchaud
- INSERM, UMR1033, UCB Lyon 1, Faculté de Médecine Lyon Est, 69732 Lyon, France.
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11
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Nollet M, Santucci-Darmanin S, Breuil V, Al-Sahlanee R, Cros C, Topi M, Momier D, Samson M, Pagnotta S, Cailleteau L, Battaglia S, Farlay D, Dacquin R, Barois N, Jurdic P, Boivin G, Heymann D, Lafont F, Lu SS, Dempster DW, Carle GF, Pierrefite-Carle V. Autophagy in osteoblasts is involved in mineralization and bone homeostasis. Autophagy 2014; 10:1965-77. [PMID: 25484092 PMCID: PMC4502694 DOI: 10.4161/auto.36182] [Citation(s) in RCA: 275] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Bone remodeling is a tightly controlled mechanism in which osteoblasts (OB), the cells responsible for bone formation, osteoclasts (OC), the cells specialized for bone resorption, and osteocytes, the multifunctional mechanosensing cells embedded in the bone matrix, are the main actors. Increased oxidative stress in OB, the cells producing and mineralizing bone matrix, has been associated with osteoporosis development but the role of autophagy in OB has not yet been addressed. This is the goal of the present study. We first show that the autophagic process is induced in OB during mineralization. Then, using knockdown of autophagy-essential genes and OB-specific autophagy-deficient mice, we demonstrate that autophagy deficiency reduces mineralization capacity. Moreover, our data suggest that autophagic vacuoles could be used as vehicles in OB to secrete apatite crystals. In addition, autophagy-deficient OB exhibit increased oxidative stress and secretion of the receptor activator of NFKB1 (TNFSF11/RANKL), favoring generation of OC, the cells specialized in bone resorption. In vivo, we observed a 50% reduction in trabecular bone mass in OB-specific autophagy-deficient mice. Taken together, our results show for the first time that autophagy in OB is involved both in the mineralization process and in bone homeostasis. These findings are of importance for mineralized tissues which extend from corals to vertebrates and uncover new therapeutic targets for calcified tissue-related metabolic pathologies.
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Key Words
- ACP5/TRAP, acid phosphatase 5, tartrate resistant
- BECN1, Beclin 1, autophagy-related
- BV, bone volume
- Baf, bafilomycin A1
- Col1A, collagen, type I, α 1
- HRTEM, high resolution transmission electron microscopy
- MAP1LC3 (LC3), microtubule-associated protein 1 light chain 3
- OB, osteoblast
- OC, osteoclast
- PBS, phosphate-buffered saline
- RNA, ribonucleic acid
- RUNX2, runt-related transcription factor 2
- SAED, selected area electron diffraction
- SPP1/OPN, secreted phosphoprotein 1
- TNFSF11/RANKL, tumor necrosis factor (ligand) superfamily, member 11
- TUBB, tubulin, beta
- TV, total volume
- autophagy
- bone remodeling
- mineralization
- osteoblast
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Affiliation(s)
- Marie Nollet
- UMR E-4320 MATOs CEA/iBEB/SBTN-CAL; Université Nice Sophia Antipolis; Faculté de Médecine; Nice, France
| | - Sabine Santucci-Darmanin
- UMR E-4320 MATOs CEA/iBEB/SBTN-CAL; Université Nice Sophia Antipolis; Faculté de Médecine; Nice, France
| | - Véronique Breuil
- UMR E-4320 MATOs CEA/iBEB/SBTN-CAL; Université Nice Sophia Antipolis; Faculté de Médecine; Nice, France
- Service de Rhumatologie; CHU de Nice; Nice, France
| | - Rasha Al-Sahlanee
- UMR E-4320 MATOs CEA/iBEB/SBTN-CAL; Université Nice Sophia Antipolis; Faculté de Médecine; Nice, France
| | - Chantal Cros
- UMR E-4320 MATOs CEA/iBEB/SBTN-CAL; Université Nice Sophia Antipolis; Faculté de Médecine; Nice, France
| | - Majlinda Topi
- UMR E-4320 MATOs CEA/iBEB/SBTN-CAL; Université Nice Sophia Antipolis; Faculté de Médecine; Nice, France
| | - David Momier
- UMR E-4320 MATOs CEA/iBEB/SBTN-CAL; Université Nice Sophia Antipolis; Faculté de Médecine; Nice, France
| | - Michel Samson
- UMR E-4320 MATOs CEA/iBEB/SBTN-CAL; Université Nice Sophia Antipolis; Faculté de Médecine; Nice, France
| | - Sophie Pagnotta
- Centre Commun de Microscopie Appliquee; Université Nice Sophia Antipolis; Nice, France
| | - Laurence Cailleteau
- Plateforme Imagerie IRCAN; Faculté de Médecine; Université Nice Sophia Antipolis; Nice, France
| | - Séverine Battaglia
- INSERM UMR 957; Université de Nantes; Equipe labellisée Ligue Nationale Contre le Cancer 2012; Nantes, France
| | | | - Romain Dacquin
- Institut de Génomique Fonctionnelle de Lyon; Université de Lyon; CNRS; Ecole Normale Supérieure de Lyon; Lyon, France
| | - Nicolas Barois
- Plate-forme BICeL-IFR142; Institut Pasteur de Lille; Lille, France
| | - Pierre Jurdic
- Institut de Génomique Fonctionnelle de Lyon; Université de Lyon; CNRS; Ecole Normale Supérieure de Lyon; Lyon, France
| | | | - Dominique Heymann
- INSERM UMR 957; Université de Nantes; Equipe labellisée Ligue Nationale Contre le Cancer 2012; Nantes, France
| | - Frank Lafont
- Plate-forme BICeL-IFR142; Institut Pasteur de Lille; Lille, France
- INSERM U1019 - CNRS UMR 8204; Institut Pasteur de Lille - Univ Lille Nord de France; Lille, France
| | - Shi Shou Lu
- Regional Bone Center; Helen Hayes Hospital; West Havertsraw, NY USA
| | - David W Dempster
- Regional Bone Center; Helen Hayes Hospital; West Havertsraw, NY USA
| | - Georges F Carle
- UMR E-4320 MATOs CEA/iBEB/SBTN-CAL; Université Nice Sophia Antipolis; Faculté de Médecine; Nice, France
| | - Valérie Pierrefite-Carle
- UMR E-4320 MATOs CEA/iBEB/SBTN-CAL; Université Nice Sophia Antipolis; Faculté de Médecine; Nice, France
- Correspondence to: Valérie Pierrefite-Carle;
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Rinotas V, Niti A, Dacquin R, Bonnet N, Stolina M, Han CY, Kostenuik P, Jurdic P, Ferrari S, Douni E. Novel genetic models of osteoporosis by overexpression of human RANKL in transgenic mice. J Bone Miner Res 2014; 29:1158-69. [PMID: 24127173 DOI: 10.1002/jbmr.2112] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 09/10/2013] [Accepted: 09/30/2013] [Indexed: 11/10/2022]
Abstract
Receptor activator of NF-κB ligand (RANKL) plays a key role in osteoclast-induced bone resorption across a range of degenerative bone diseases, and its specific inhibition has been recently approved as a treatment for women with postmenopausal osteoporosis at high or increased risk of fracture in the United States and globally. In the present study, we generated transgenic mice (TghuRANKL) carrying the human RANKL (huRANKL) genomic region and achieved a physiologically relevant pattern of RANKL overexpression in order to establish novel genetic models for assessing skeletal and extraskeletal pathologies associated with excessive RANKL and for testing clinical therapeutic candidates that inhibit human RANKL. TghuRANKL mice of both sexes developed early-onset bone loss, and the levels of huRANKL expression were correlated with bone resorption and disease severity. Low copy Tg5516 mice expressing huRANKL at low levels displayed a mild osteoporotic phenotype as shown by trabecular bone loss and reduced biomechanical properties. Notably, overexpression of huRANKL, in the medium copy Tg5519 line, resulted in severe early-onset osteoporosis characterized by lack of trabecular bone, destruction of the growth plate, increased osteoclastogenesis, bone marrow adiposity, increased bone remodeling, and severe cortical bone porosity accompanied by decreased bone strength. An even more severe skeletal phenotype developed in the high copy Tg5520 founder with extensive soft tissue calcification. Model validation was further established by evidence that denosumab, an antibody that inhibits human but not murine RANKL, fully corrected the hyper-resorptive and osteoporotic phenotypes of Tg5519 mice. Furthermore, overexpression of huRANKL rescued osteopetrotic phenotypes of RANKL-defective mice. These novel huRANKL transgenic models of osteoporosis represent an important advance for understanding the pathogenesis and treatment of high-turnover bone diseases and other disease states caused by excessive RANKL.
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Affiliation(s)
- Vagelis Rinotas
- Laboratory of Genetics, Department of Biotechnology, Agricultural University of Athens, Athens, Greece; Biomedical Sciences Research Center "Alexander Fleming", Vari, Greece
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Georgess D, Mazzorana M, Terrado J, Delprat C, Chamot C, Guasch RM, Pérez-Roger I, Jurdic P, Machuca-Gayet I. Comparative transcriptomics reveals RhoE as a novel regulator of actin dynamics in bone-resorbing osteoclasts. Mol Biol Cell 2013; 25:380-96. [PMID: 24284899 PMCID: PMC3907278 DOI: 10.1091/mbc.e13-07-0363] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Two-step transcriptomic profiling of bone-resorbing OCs versus nonresorbing MGCs generated a list of 115 genes potentially involved in bone resorption. Of these, RhoE was investigated. Its role in podosome dynamics is central for OC migration, SZ formation, and, ultimately, bone resorption. The function of osteoclasts (OCs), multinucleated giant cells (MGCs) of the monocytic lineage, is bone resorption. To resorb bone, OCs form podosomes. These are actin-rich adhesive structures that pattern into rings that drive OC migration and into “sealing-zones” (SZs) that confine the resorption lacuna. Although changes in actin dynamics during podosome patterning have been documented, the mechanisms that regulate these changes are largely unknown. From human monocytic precursors, we differentiated MGCs that express OC degradation enzymes but are unable to resorb the mineral matrix. We demonstrated that, despite exhibiting bona fide podosomes, these cells presented dysfunctional SZs. We then performed two-step differential transcriptomic profiling of bone-resorbing OCs versus nonresorbing MGCs to generate a list of genes implicated in bone resorption. From this list of candidate genes, we investigated the role of Rho/Rnd3. Using primary RhoE-deficient OCs, we demonstrated that RhoE is indispensable for OC migration and bone resorption by maintaining fast actin turnover in podosomes. We further showed that RhoE activates podosome component cofilin by inhibiting its Rock-mediated phosphorylation. We conclude that the RhoE-Rock-cofilin pathway, by promoting podosome dynamics and patterning, is central for OC migration, SZ formation, and, ultimately, bone resorption.
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Affiliation(s)
- Dan Georgess
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Université Lyon 1, CNRS, Ecole Normale Supérieure de Lyon, Lyon Cedex 07, France Laboratoire de Biologie Moléculaire de la Cellule, Université de Lyon, Université Lyon 1, CNRS, Ecole Normale Supérieure de Lyon, Lyon Cedex 07, France Departamento Medicina y Cirugía Animal, Facultad de Veterinaria, Universidad CEU Cardenal Herrera, 46115 Alfara del Patriarca, Valencia, Spain Plateau Technique Imagerie/Microscopie Facility, SFR Biosciences (UMS3444/US8), Ecole Normale Supérieure de Lyon, Lyon Cedex 07, France Laboratory of Cellular Pathology, 46012 Valencia, Spain Departamento Ciencias Biomédicas-Seminario Salud, 46113 Moncada, Valencia, Spain
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14
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Simon MM, Greenaway S, White JK, Fuchs H, Gailus-Durner V, Wells S, Sorg T, Wong K, Bedu E, Cartwright EJ, Dacquin R, Djebali S, Estabel J, Graw J, Ingham NJ, Jackson IJ, Lengeling A, Mandillo S, Marvel J, Meziane H, Preitner F, Puk O, Roux M, Adams DJ, Atkins S, Ayadi A, Becker L, Blake A, Brooker D, Cater H, Champy MF, Combe R, Danecek P, di Fenza A, Gates H, Gerdin AK, Golini E, Hancock JM, Hans W, Hölter SM, Hough T, Jurdic P, Keane TM, Morgan H, Müller W, Neff F, Nicholson G, Pasche B, Roberson LA, Rozman J, Sanderson M, Santos L, Selloum M, Shannon C, Southwell A, Tocchini-Valentini GP, Vancollie VE, Westerberg H, Wurst W, Zi M, Yalcin B, Ramirez-Solis R, Steel KP, Mallon AM, de Angelis MH, Herault Y, Brown SDM. A comparative phenotypic and genomic analysis of C57BL/6J and C57BL/6N mouse strains. Genome Biol 2013; 14:R82. [PMID: 23902802 PMCID: PMC4053787 DOI: 10.1186/gb-2013-14-7-r82] [Citation(s) in RCA: 335] [Impact Index Per Article: 30.5] [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: 03/18/2013] [Revised: 06/07/2013] [Accepted: 07/31/2013] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The mouse inbred line C57BL/6J is widely used in mouse genetics and its genome has been incorporated into many genetic reference populations. More recently large initiatives such as the International Knockout Mouse Consortium (IKMC) are using the C57BL/6N mouse strain to generate null alleles for all mouse genes. Hence both strains are now widely used in mouse genetics studies. Here we perform a comprehensive genomic and phenotypic analysis of the two strains to identify differences that may influence their underlying genetic mechanisms. RESULTS We undertake genome sequence comparisons of C57BL/6J and C57BL/6N to identify SNPs, indels and structural variants, with a focus on identifying all coding variants. We annotate 34 SNPs and 2 indels that distinguish C57BL/6J and C57BL/6N coding sequences, as well as 15 structural variants that overlap a gene. In parallel we assess the comparative phenotypes of the two inbred lines utilizing the EMPReSSslim phenotyping pipeline, a broad based assessment encompassing diverse biological systems. We perform additional secondary phenotyping assessments to explore other phenotype domains and to elaborate phenotype differences identified in the primary assessment. We uncover significant phenotypic differences between the two lines, replicated across multiple centers, in a number of physiological, biochemical and behavioral systems. CONCLUSIONS Comparison of C57BL/6J and C57BL/6N demonstrates a range of phenotypic differences that have the potential to impact upon penetrance and expressivity of mutational effects in these strains. Moreover, the sequence variants we identify provide a set of candidate genes for the phenotypic differences observed between the two strains.
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Affiliation(s)
- Michelle M Simon
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Simon Greenaway
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Jacqueline K White
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, UK
| | - Helmut Fuchs
- Helmholtz Zentrum München, German Research Centre for Environmental Health, Institute of Experimental Genetics and German Mouse Clinic, Ingolstädter Landstraße 1, Neuherberg, D-85764, Germany
| | - Valérie Gailus-Durner
- Helmholtz Zentrum München, German Research Centre for Environmental Health, Institute of Experimental Genetics and German Mouse Clinic, Ingolstädter Landstraße 1, Neuherberg, D-85764, Germany
| | - Sara Wells
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Tania Sorg
- Institut Clinique de la Souris, ICS/MCI, PHENOMIN, GIE CERBM, IGBMC, CNRS, INSERM, 1 Rue Laurent Fries, 67404 Illkirch-Graffenstaden Cedex, France
| | - Kim Wong
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, UK
| | - Elodie Bedu
- Institut Clinique de la Souris, ICS/MCI, PHENOMIN, GIE CERBM, IGBMC, CNRS, INSERM, 1 Rue Laurent Fries, 67404 Illkirch-Graffenstaden Cedex, France
| | - Elizabeth J Cartwright
- Faculty of Medical and Human Sciences, University of Manchester, Oxford Road, Manchester, MN13 9PT, UK
| | - Romain Dacquin
- AniRA ImmOs phenotyping facility- SFR Biosciences Lyon Gerland- UMS3444/US8, 21 avenue Tony Garnier F-69007 Lyon, France
| | - Sophia Djebali
- AniRA ImmOs phenotyping facility- SFR Biosciences Lyon Gerland- UMS3444/US8, 21 avenue Tony Garnier F-69007 Lyon, France
| | - Jeanne Estabel
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, UK
| | - Jochen Graw
- Helmholtz Zentrum München, German Research Centre for Environmental Health, Institute of Developmental Genetics, Ingolstädter Landstraße 1, Neuherberg, D-85764, Germany
| | - Neil J Ingham
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, UK
| | - Ian J Jackson
- Medical Research Council Human Genetics Unit, IGMM, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh, EH4 2XU, UK
| | - Andreas Lengeling
- Infection and Immunity Division, Roslin Institute, University of Edinburgh, Easter Bush Veterinary Campus, Midlothian, EH25 9RG, UK
| | - Silvia Mandillo
- Consiglio Nazionale delle Ricerche- Cell Biology and Neurobiology Institute, Via E.Ramarini 32, 00015 Monterotondo Scala, Italy
| | - Jacqueline Marvel
- AniRA ImmOs phenotyping facility- SFR Biosciences Lyon Gerland- UMS3444/US8, 21 avenue Tony Garnier F-69007 Lyon, France
| | - Hamid Meziane
- Institut Clinique de la Souris, ICS/MCI, PHENOMIN, GIE CERBM, IGBMC, CNRS, INSERM, 1 Rue Laurent Fries, 67404 Illkirch-Graffenstaden Cedex, France
| | - Frédéric Preitner
- Department of Infection Genetics, Helmholtz Centre for Infection Research, Inhoffenstraße 7, Braunschweig, 38124, Germany
| | - Oliver Puk
- Helmholtz Zentrum München, German Research Centre for Environmental Health, Institute of Developmental Genetics, Ingolstädter Landstraße 1, Neuherberg, D-85764, Germany
| | - Michel Roux
- Institut Clinique de la Souris, ICS/MCI, PHENOMIN, GIE CERBM, IGBMC, CNRS, INSERM, 1 Rue Laurent Fries, 67404 Illkirch-Graffenstaden Cedex, France
| | - David J Adams
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, UK
| | - Sarah Atkins
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Abdel Ayadi
- Institut Clinique de la Souris, ICS/MCI, PHENOMIN, GIE CERBM, IGBMC, CNRS, INSERM, 1 Rue Laurent Fries, 67404 Illkirch-Graffenstaden Cedex, France
| | - Lore Becker
- Helmholtz Zentrum München, German Research Centre for Environmental Health, Institute of Experimental Genetics and German Mouse Clinic, Ingolstädter Landstraße 1, Neuherberg, D-85764, Germany
| | - Andrew Blake
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Debra Brooker
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Heather Cater
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Marie-France Champy
- Institut Clinique de la Souris, ICS/MCI, PHENOMIN, GIE CERBM, IGBMC, CNRS, INSERM, 1 Rue Laurent Fries, 67404 Illkirch-Graffenstaden Cedex, France
| | - Roy Combe
- Institut Clinique de la Souris, ICS/MCI, PHENOMIN, GIE CERBM, IGBMC, CNRS, INSERM, 1 Rue Laurent Fries, 67404 Illkirch-Graffenstaden Cedex, France
| | - Petr Danecek
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, UK
| | - Armida di Fenza
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Hilary Gates
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Anna-Karin Gerdin
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, UK
| | - Elisabetta Golini
- Consiglio Nazionale delle Ricerche- Cell Biology and Neurobiology Institute, Via E.Ramarini 32, 00015 Monterotondo Scala, Italy
| | - John M Hancock
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Wolfgang Hans
- Helmholtz Zentrum München, German Research Centre for Environmental Health, Institute of Experimental Genetics and German Mouse Clinic, Ingolstädter Landstraße 1, Neuherberg, D-85764, Germany
| | - Sabine M Hölter
- Helmholtz Zentrum München, German Research Centre for Environmental Health, Institute of Experimental Genetics and German Mouse Clinic, Ingolstädter Landstraße 1, Neuherberg, D-85764, Germany
| | - Tertius Hough
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Pierre Jurdic
- AniRA ImmOs phenotyping facility- SFR Biosciences Lyon Gerland- UMS3444/US8, 21 avenue Tony Garnier F-69007 Lyon, France
| | - Thomas M Keane
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, UK
| | - Hugh Morgan
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Werner Müller
- Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester, MN13 9PT, UK
| | - Frauke Neff
- Helmholtz Zentrum München, German Research Centre for Environmental Health, Institute of Pathology, Ingolstädter Landstraße 1, Neuherberg, D-85764, Germany
| | - George Nicholson
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Bastian Pasche
- Mouse Metabolic Facility of the Cardiomet Center, University Hospital, and Center for Integrative Genomics, University of Lausanne, 1015 Lausanne, Switzerland
| | - Laura-Anne Roberson
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, UK
| | - Jan Rozman
- Helmholtz Zentrum München, German Research Centre for Environmental Health, Institute of Experimental Genetics and German Mouse Clinic, Ingolstädter Landstraße 1, Neuherberg, D-85764, Germany
| | - Mark Sanderson
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, UK
| | - Luis Santos
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Mohammed Selloum
- Institut Clinique de la Souris, ICS/MCI, PHENOMIN, GIE CERBM, IGBMC, CNRS, INSERM, 1 Rue Laurent Fries, 67404 Illkirch-Graffenstaden Cedex, France
| | - Carl Shannon
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, UK
| | - Anne Southwell
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Glauco P Tocchini-Valentini
- Consiglio Nazionale delle Ricerche- Cell Biology and Neurobiology Institute, Via E.Ramarini 32, 00015 Monterotondo Scala, Italy
| | - Valerie E Vancollie
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, UK
| | - Henrik Westerberg
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Wolfgang Wurst
- Helmholtz Zentrum München, German Research Centre for Environmental Health, Institute of Developmental Genetics, Ingolstädter Landstraße 1, Neuherberg, D-85764, Germany
- Chair for Developmental Genetics, Technische Universität München, Arcisstr. 21, Munich, 80333, Germany
- Max Planck Institute of Psychiatry, Kraepelinstrasse 2, Munich, 80804, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen, Schillerstrasse 44, Munich, 80336, Germany
| | - Min Zi
- Faculty of Medical and Human Sciences, University of Manchester, Oxford Road, Manchester, MN13 9PT, UK
| | - Binnaz Yalcin
- Institut Clinique de la Souris, ICS/MCI, PHENOMIN, GIE CERBM, IGBMC, CNRS, INSERM, 1 Rue Laurent Fries, 67404 Illkirch-Graffenstaden Cedex, France
- Center for Integrative Genomics, University of Lausanne, Lausanne, CH-1015, Switzerland
| | - Ramiro Ramirez-Solis
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, UK
| | - Karen P Steel
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, UK
| | - Ann-Marie Mallon
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
| | - Martin Hrabě de Angelis
- Helmholtz Zentrum München, German Research Centre for Environmental Health, Institute of Experimental Genetics and German Mouse Clinic, Ingolstädter Landstraße 1, Neuherberg, D-85764, Germany
| | - Yann Herault
- Institut Clinique de la Souris, ICS/MCI, PHENOMIN, GIE CERBM, IGBMC, CNRS, INSERM, 1 Rue Laurent Fries, 67404 Illkirch-Graffenstaden Cedex, France
| | - Steve DM Brown
- Medical Research Council Harwell (Mammalian Genetics Unit and Mary Lyon Centre), Harwell Science Campus, OX11 0RD, UK
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Virgone-Carlotta A, Uhlrich J, Akram MN, Ressnikoff D, Chrétien F, Domenget C, Gherardi R, Despars G, Jurdic P, Honnorat J, Nataf S, Touret M. Mapping and kinetics of microglia/neuron cell-to-cell contacts in the 6-OHDA murine model of Parkinson's disease. Glia 2013; 61:1645-58. [DOI: 10.1002/glia.22546] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 05/23/2013] [Accepted: 05/28/2013] [Indexed: 11/05/2022]
Affiliation(s)
- Angélique Virgone-Carlotta
- INSERM U1028; CNRS UMR5292, Lyon Neurosciences Research Center, Neuro-oncology and Neuroinflammation team; Lyon; 69000; France
| | - Josselin Uhlrich
- INSERM U1028; CNRS UMR5292, Lyon Neurosciences Research Center, Neuro-oncology and Neuroinflammation team; Lyon; 69000; France
| | - Muhammad Numan Akram
- INSERM U1028; CNRS UMR5292, Lyon Neurosciences Research Center, Neuro-oncology and Neuroinflammation team; Lyon; 69000; France
| | | | - Fabrice Chrétien
- IMRB - Inserm U955, Equipe n°10 “Interactions cellulaires dans le système neuromusculaire”; Faculté de Médecine de Créteil - Université Paris 12; 8 rue du général Sarrail; 94011 Créteil; France
| | - Chantal Domenget
- Institut de Génomique Fonctionnelle, Ecole Normale Supérieure de Lyon; 46 Allée d'Italie; 69364; Lyon, France
| | - Romain Gherardi
- IMRB - Inserm U955, Equipe n°10 “Interactions cellulaires dans le système neuromusculaire”; Faculté de Médecine de Créteil - Université Paris 12; 8 rue du général Sarrail; 94011 Créteil; France
| | - Geneviève Despars
- Institut de Génomique Fonctionnelle, Ecole Normale Supérieure de Lyon; 46 Allée d'Italie; 69364; Lyon, France
| | - Pierre Jurdic
- Institut de Génomique Fonctionnelle, Ecole Normale Supérieure de Lyon; 46 Allée d'Italie; 69364; Lyon, France
| | - Jérôme Honnorat
- INSERM U1028; CNRS UMR5292, Lyon Neurosciences Research Center, Neuro-oncology and Neuroinflammation team; Lyon; 69000; France
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Vérollet C, Gallois A, Dacquin R, Lastrucci C, Pandruvada SNM, Ortega N, Poincloux R, Behar A, Cougoule C, Lowell C, Al Saati T, Jurdic P, Maridonneau-Parini I. Hck contributes to bone homeostasis by controlling the recruitment of osteoclast precursors. FASEB J 2013; 27:3608-18. [PMID: 23742809 DOI: 10.1096/fj.13-232736] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In osteoclasts, Src controls podosome organization and bone degradation, which leads to an osteopetrotic phenotype in src(-/-) mice. Since this phenotype was even more severe in src(-/-)hck(-/-) mice, we examined the individual contribution of Hck in bone homeostasis. Compared to wt mice, hck(-/-) mice exhibited an osteopetrotic phenotype characterized by an increased density of trabecular bone and decreased bone degradation, although osteoclastogenesis was not impaired. Podosome organization and matrix degradation were found to be defective in hck(-/-) osteoclast precursors (preosteoclast) but were normal in mature hck(-/-) osteoclasts, probably through compensation by Src, which was specifically overexpressed in mature osteoclasts. As a consequence of podosome defects, the 3-dimensional migration of hck(-/-) preosteoclasts was strongly affected in vitro. In vivo, this translated by altered bone homing of preosteoclasts in hck(-/-) mice: in metatarsals of 1-wk-old mice, when bone formation strongly depends on the recruitment of these cells, reduced numbers of osteoclasts and abnormal developing trabecular bone were observed. This phenotype was still detectable in adults. In summmary, Hck is one of the very few effectors of preosteoclast recruitment described to date and thereby plays a critical role in bone remodeling.
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Affiliation(s)
- Christel Vérollet
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche (UMR) 5089, Institut de Pharmacologie et de Biologie Structurale (IPBS), Toulouse, France
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Harre U, Georgess D, Axmann R, Bang H, Toes R, Scherer H, Catrina A, Klareskog L, Jurdic P, Schett G. OP0019 Anti-citrullinated protein antibodies directly induce bone loss in rheumatoid arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1702] [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: 11/04/2022]
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Baas D, Caussanel-Boude S, Guiraud A, Calhabeu F, Delaune E, Pilot F, Chopin E, Machuca-Gayet I, Vernay A, Bertrand S, Rual JF, Jurdic P, Hill DE, Vidal M, Schaeffer L, Goillot E. CKIP-1 regulates mammalian and zebrafish myoblast fusion. J Cell Sci 2012; 125:3790-800. [PMID: 22553210 DOI: 10.1242/jcs.101048] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Multinucleated muscle fibres arise by fusion of precursor cells called myoblasts. We previously showed that CKIP-1 ectopic expression in C2C12 myoblasts increased cell fusion. In this work, we report that CKIP-1 depletion drastically impairs C2C12 myoblast fusion in vitro and in vivo during zebrafish muscle development. Within developing fast-twich myotome, Ckip-1 localises at the periphery of fast precursor cells, closed to the plasma membrane. Unlike wild-type myoblasts that form spatially arrayed multinucleated fast myofibres, Ckip-1-deficient myoblasts show a drastic reduction in fusion capacity. A search for CKIP-1 binding partners identified the ARPC1 subunit of Arp2/3 actin nucleation complex essential for myoblast fusion. We demonstrate that CKIP-1, through binding to plasma membrane phosphoinositides via its PH domain, regulates cell morphology and lamellipodia formation by recruiting the Arp2/3 complex at the plasma membrane. These results establish CKIP-1 as a regulator of cortical actin that recruits the Arp2/3 complex at the plasma membrane essential for muscle precursor elongation and fusion.
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Affiliation(s)
- Dominique Baas
- Equipe Différenciation Neuromusculaire, Laboratoire de Biologie Moléculaire de la Cellule, CNRS UMR 5239/ENS Lyon, Université de Lyon, IFR128 Biosciences Lyon-Gerland, 46 Allée d'Italie, 69364 LYON cedex 07, France
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Harre U, Georgess D, Bang H, Bozec A, Axmann R, Ossipova E, Jakobsson PJ, Baum W, Nimmerjahn F, Szarka E, Sarmay G, Krumbholz G, Neumann E, Toes R, Scherer HU, Catrina AI, Klareskog L, Jurdic P, Schett G. Induction of osteoclastogenesis and bone loss by human autoantibodies against citrullinated vimentin. J Clin Invest 2012; 122:1791-802. [PMID: 22505457 PMCID: PMC3336988 DOI: 10.1172/jci60975] [Citation(s) in RCA: 523] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Accepted: 03/07/2012] [Indexed: 12/27/2022] Open
Abstract
Autoimmunity is complicated by bone loss. In human rheumatoid arthritis (RA), the most severe inflammatory joint disease, autoantibodies against citrullinated proteins are among the strongest risk factors for bone destruction. We therefore hypothesized that these autoantibodies directly influence bone metabolism. Here, we found a strong and specific association between autoantibodies against citrullinated proteins and serum markers for osteoclast-mediated bone resorption in RA patients. Moreover, human osteoclasts expressed enzymes eliciting protein citrullination, and specific N-terminal citrullination of vimentin was induced during osteoclast differentiation. Affinity-purified human autoantibodies against mutated citrullinated vimentin (MCV) not only bound to osteoclast surfaces, but also led to robust induction of osteoclastogenesis and bone-resorptive activity. Adoptive transfer of purified human MCV autoantibodies into mice induced osteopenia and increased osteoclastogenesis. This effect was based on the inducible release of TNF-α from osteoclast precursors and the subsequent increase of osteoclast precursor cell numbers with enhanced expression of activation and growth factor receptors. Our data thus suggest that autoantibody formation in response to citrullinated vimentin directly induces bone loss, providing a link between the adaptive immune system and bone.
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Affiliation(s)
- Ulrike Harre
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Dan Georgess
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Holger Bang
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Aline Bozec
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Roland Axmann
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Elena Ossipova
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Per-Johan Jakobsson
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Wolfgang Baum
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Falk Nimmerjahn
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Eszter Szarka
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Gabriella Sarmay
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Grit Krumbholz
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Elena Neumann
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Rene Toes
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Hans-Ulrich Scherer
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Anca Irinel Catrina
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Lars Klareskog
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Pierre Jurdic
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
| | - Georg Schett
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany.
Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, and CNRS, Ecole Normale Superieure de Lyon, Lyon, France.
Orgentec Diagnostika, Mainz, Germany.
Rheumatology Unit, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden.
Department of Genetics, University of Erlangen-Nuremberg, Erlangen, Germany.
Department of Immunology, Eotvos Lorand University, Budapest, Hungary.
Department of Rheumatology, University of Giessen, Bad Nauheim, Germany.
Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands
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20
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Mugniery E, Dacquin R, Marty C, Benoist-Lasselin C, de Vernejoul MC, Jurdic P, Munnich A, Geoffroy V, Legeai-Mallet L. An activating Fgfr3 mutation affects trabecular bone formation via a paracrine mechanism during growth. Hum Mol Genet 2012; 21:2503-13. [PMID: 22367969 DOI: 10.1093/hmg/dds065] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The fibroblast growth factor receptor 3 (FGFR3) plays a critical role in the regulation of endochondral ossification. Fgfr3 gain-of-function mutations cause achondroplasia, the most common form of dwarfism, and a spectrum of chondrodysplasias. Despite a significant number of studies on the role of FGFR3 in cartilage, to date, none has investigated the influence of Fgfr3-mediated effects of the growth plate on bone formation. We studied three mouse models, each expressing Fgfr3 mutation either ubiquitously (CMV-Fgfr3(Y367C/+)), in chondrocytes (Col II-Fgfr3(Y367C/+)) or in mature osteoblasts (Col I-Fgfr3(Y367C/+)). Interestingly, we demonstrated that dwarfism with a significant defect in bone formation during growth was only observed in mouse models expressing mutant Fgfr3 in the cartilage. We observed a dramatic reduction in cartilage matrix mineralization and a strong defect of primary spongiosa. Anomalies of primary spongiosa were associated with an increase in osteoclast recruitment and a defect of osteoblasts at the mineralization front. A significant decrease in bone volume, trabecular thickness and number was also observed in the trabecular bone. Interestingly, no anomalies in proliferation and differentiation of primary osteoblasts from CMV-Fgfr3(Y367C/+) mice were observed. Based on these data, we excluded a potential function of Fgfr3 directly on osteoblasts at 3 weeks of age and we obtained evidence that the disorganization of the growth plate is responsible for the anomalies of the trabecular bone during bone formation. Herein, we propose that impaired FGFR3 signaling pathways may affect trabecular bone formation via a paracrine mechanism during growth. These results redefine our understanding of endochondral ossification in FGFR3-related chondrodysplasias.
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Affiliation(s)
- Emilie Mugniery
- INSERM U781, Universite´ Paris Descartes, Hoˆ pital Necker-Enfants Malades, 75015 Paris, France
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21
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Saulnier N, Guihard S, Holy X, Decembre E, Jurdic P, Clay D, Feuillet V, Pagès G, Pouysségur J, Porteu F, Gaudry M. ERK1 regulates the hematopoietic stem cell niches. PLoS One 2012; 7:e30788. [PMID: 22303456 PMCID: PMC3268766 DOI: 10.1371/journal.pone.0030788] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [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: 11/25/2011] [Accepted: 12/29/2011] [Indexed: 11/18/2022] Open
Abstract
The mitogen-activated protein kinases (MAPK) ERK1 and ERK2 are among the major signal transduction molecules but little is known about their specific functions in vivo. ERK activity is provided by two isoforms, ERK1 and ERK2, which are ubiquitously expressed and share activators and substrates. However, there are not in vivo studies which have reported a role for ERK1 or ERK2 in HSCs and the bone marrow microenvironment. The present study shows that the ERK1-deficient mice present a mild osteopetrosis phenotype. The lodging and the homing abilities of the ERK1(-/-) HSC are impaired, suggesting that the ERK1(-/-)-defective environment may affect the engrafment of HSCs. Serial transplantations demonstrate that ERK1 is involved in the maintenance of an appropriate medullar microenvironment, but that the intrinsic properties of HSCs are not altered by the ERK1(-/-) defective microenvironment. Deletion of ERK1 impaired in vitro and in vivo osteoclastogenesis while osteoblasts were unaffected. As osteoclasts derive from precursors of the monocyte/macrophage lineage, investigation of the monocytic compartment was performed. In vivo analysis of the myeloid lineage progenitors revealed that the frequency of CMPs increased by approximately 1.3-fold, while the frequency of GMPs significantly decreased by almost 2-fold, compared with the respective WT compartments. The overall mononuclear-phagocyte lineage development was compromised in these mice due to a reduced expression of the M-CSF receptor on myeloid progenitors. These results show that the cellular targets of ERK1 are M-CSFR-responsive cells, upstream to osteoclasts. While ERK1 is well known to be activated by M-CSF, the present results are the first to point out an ERK1-dependent M-CSFR regulation on hematopoietic progenitors. This study reinforces the hypothesis of an active cross-talk between HSCs, their progeny and bone cells in the maintenance of the homeostasis of these compartments.
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Affiliation(s)
- Nathalie Saulnier
- Institut Cochin, Université Paris Descartes, Sorbonne Paris Descartes, CNRS (UMR 8104), Paris, France
- Inserm U1016, Paris, France
| | - Soizic Guihard
- Institut Cochin, Université Paris Descartes, Sorbonne Paris Descartes, CNRS (UMR 8104), Paris, France
- Inserm U1016, Paris, France
| | - Xavier Holy
- Service histologie et réparation tissulaire, IRBA/IMASSA, Brétigny-sur-Orge, France
| | - Elodie Decembre
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Université Lyon 1, CNRS, INRA, Ecole Normale Supérieure de Lyon, Lyon, France
| | - Pierre Jurdic
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Université Lyon 1, CNRS, INRA, Ecole Normale Supérieure de Lyon, Lyon, France
| | - Denis Clay
- Inserm U972, Institut André Lwoff, Hôpital Paul Brousse, Villejuif, France
| | - Vincent Feuillet
- Institut Cochin, Université Paris Descartes, Sorbonne Paris Descartes, CNRS (UMR 8104), Paris, France
- Inserm U1016, Paris, France
| | - Gilles Pagès
- Institut de recherche Signalisation, Biologie du Développement et Cancer, Université de Nice, France
| | - Jacques Pouysségur
- Institut de recherche Signalisation, Biologie du Développement et Cancer, Université de Nice, France
| | - Françoise Porteu
- Institut Cochin, Université Paris Descartes, Sorbonne Paris Descartes, CNRS (UMR 8104), Paris, France
- Inserm U1016, Paris, France
| | - Murielle Gaudry
- Institut Cochin, Université Paris Descartes, Sorbonne Paris Descartes, CNRS (UMR 8104), Paris, France
- Inserm U1016, Paris, France
- * E-mail:
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22
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Dacquin R, Domenget C, Kumanogoh A, Kikutani H, Jurdic P, Machuca-Gayet I. Control of bone resorption by semaphorin 4D is dependent on ovarian function. PLoS One 2011; 6:e26627. [PMID: 22046317 PMCID: PMC3202567 DOI: 10.1371/journal.pone.0026627] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [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: 07/22/2011] [Accepted: 09/29/2011] [Indexed: 01/09/2023] Open
Abstract
Osteoporosis is one of the most common bone pathologies, which are characterized by a decrease in bone mass. It is well established that bone mass, which results from a balanced bone formation and bone resorption, is regulated by many hormonal, environmental and genetic factors. Here we report that the immune semaphorin 4D (Sema4D) is a novel factor controlling bone resorption. Sema4D-deficient primary osteoclasts showed impaired spreading, adhesion, migration and resorption due to altered ß3 integrin sub-unit downstream signaling. In apparent accordance with these in vitro results, Sema4D deletion in sexually mature female mice led to a high bone mass phenotype due to defective bone resorption by osteoclasts. Mutant males, however, displayed normal bone mass and the female osteopetrotic phenotype was only detected at the onset of sexual maturity, indicating that, in vivo, this intrinsic osteoclast defect might be overcome in these mice. Using bone marrow cross transplantation, we confirmed that Sema4D controls bone resorption through an indirect mechanism. In addition, we show that Sema4D −/− mice were less fertile than their WT littermates. A decrease in Gnrh1 hypothalamic expression and a reduced number of ovarian follicles can explain this attenuated fertility. Interestingly, ovariectomy abrogated the bone resorption phenotype in Sema4D −/− mice, providing the evidence that the observed high bone mass phenotype is strictly dependent on ovarian function. Altogether, this study reveals that, in vivo, Sema4D is an indirect regulator of bone resorption, which acts via its effect on reproductive function.
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Affiliation(s)
- Romain Dacquin
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, CNRS, Ecole Normale Supérieure de Lyon, Lyon, France
| | - Chantal Domenget
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, CNRS, Ecole Normale Supérieure de Lyon, Lyon, France
| | - Atsushi Kumanogoh
- Department of Immunopathology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - Hitoshi Kikutani
- Department of Immunopathology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - Pierre Jurdic
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, CNRS, Ecole Normale Supérieure de Lyon, Lyon, France
| | - Irma Machuca-Gayet
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, CNRS, Ecole Normale Supérieure de Lyon, Lyon, France
- * E-mail:
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23
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Yue J, Shukla R, Accardi R, Zanella-Cleon I, Siouda M, Cros MP, Krutovskikh V, Hussain I, Niu Y, Hu S, Becchi M, Jurdic P, Tommasino M, Sylla BS. Cutaneous human papillomavirus type 38 E7 regulates actin cytoskeleton structure for increasing cell proliferation through CK2 and the eukaryotic elongation factor 1A. J Virol 2011; 85:8477-94. [PMID: 21697493 PMCID: PMC3165781 DOI: 10.1128/jvi.02561-10] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Accepted: 06/06/2011] [Indexed: 01/13/2023] Open
Abstract
We previously reported that the oncoproteins E6 and E7 from cutaneous human papillomavirus type 38 (HPV38) can immortalize primary human keratinocytes in vitro and sensitize transgenic mice to develop skin cancer in vivo. Immunofluorescence staining revealed that human keratinocytes immortalized by HPV38 E6 and E7 display fewer actin stress fibers than do control primary keratinocyte cells, raising the possibility of a role of the viral oncoproteins in the remodeling of the actin cytoskeleton. In this study, we show that HPV38 E7 induces actin stress fiber disruption and that this phenomenon correlates with its ability to downregulate Rho activity. The downregulation of Rho activity by HPV38 E7 is mediated through the activation of the CK2-MEK-extracellular signal-regulated kinase (ERK) pathway. In addition, HPV38 E7 is able to induce actin fiber disruption by binding directly to eukaryotic elongation factor 1A (eEF1A) and abolishing its effects on actin fiber formation. Finally, we found that the downregulation of Rho activity by HPV38 E7 through the CK2-MEK-ERK pathway facilitates cell growth proliferation. Taken together, our data support the conclusion that HPV38 E7 promotes keratinocyte proliferation in part by negatively regulating actin cytoskeleton fiber formation through the CK2-MEK-ERK-Rho pathway and by binding to eEF1A and inhibiting its effects on actin cytoskeleton remodeling.
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Affiliation(s)
- Jiping Yue
- International Agency for Research on Cancer (IARC), Lyon, France
| | - Ruchi Shukla
- International Agency for Research on Cancer (IARC), Lyon, France
| | - Rosita Accardi
- International Agency for Research on Cancer (IARC), Lyon, France
| | - Isabelle Zanella-Cleon
- Institut de Biologie et Chimie des Protéines (IBCP), CNRS UMR5086, IFR 128 Biosciences, Lyon, France
| | - Maha Siouda
- International Agency for Research on Cancer (IARC), Lyon, France
| | | | | | - Ishraq Hussain
- International Agency for Research on Cancer (IARC), Lyon, France
| | - Yamei Niu
- International Agency for Research on Cancer (IARC), Lyon, France
| | - Shiqiong Hu
- Institut de Génomique Fonctionnelle de Lyon, Université Lyon 1, CNRS, INRA, Ecole Normale Supérieure de Lyon, 46 allée d'Italie, 69364 Lyon Cedex 07, France
| | - Michel Becchi
- Institut de Biologie et Chimie des Protéines (IBCP), CNRS UMR5086, IFR 128 Biosciences, Lyon, France
| | - Pierre Jurdic
- Institut de Génomique Fonctionnelle de Lyon, Université Lyon 1, CNRS, INRA, Ecole Normale Supérieure de Lyon, 46 allée d'Italie, 69364 Lyon Cedex 07, France
| | | | - Bakary S. Sylla
- International Agency for Research on Cancer (IARC), Lyon, France
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Monfoulet LE, Rabier B, Dacquin R, Anginot A, Photsavang J, Jurdic P, Vico L, Malaval L, Chassande O. Thyroid hormone receptor β mediates thyroid hormone effects on bone remodeling and bone mass. J Bone Miner Res 2011; 26:2036-44. [PMID: 21594896 DOI: 10.1002/jbmr.432] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Excess thyroid hormone (TH) in adults causes osteoporosis and increases fracture risk. However, the mechanisms by which TH affects bone turnover are not elucidated. In particular, the roles of thyroid hormone receptor (TR) isotypes in the mediation of TH effects on osteoblast-mediated bone formation and osteoclast-mediated bone resorption are not established. In this study we have induced experimental hypothyroidism or hyperthyroidism in adult wild-type, TRα- or TRβ-deficient mice and analyzed the effects of TH status on the structure and remodeling parameters of trabecular bone. In wild-type mice, excess TH decreased bone volume and mineralization. High TH concentrations were associated with a high bone-resorption activity, assessed by increased osteoclast surfaces and elevated concentrations of serum bone-resorption markers. Serum markers of bone formation also were higher in TH-treated mice. TRα deficiency did not prevent TH action on bone volume, bone mineralization, bone formation, or bone resorption. In contrast, TRβ deficiency blocked all the early effects of excess TH observed in wild-type mice. However, prolonged exposure to low or high TH concentrations of TRβ-deficient mice induced mild modifications of bone structure and remodeling parameters. Together our data suggest that TRβ receptors mediate the acute effects produced by transient changes of TH concentrations on bone remodeling, whereas TRα receptors mediate long-term effects of chronic alterations of TH metabolism. These data shed new light on the respective roles of TRs in the control of bone metabolism by TH.
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25
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Hu S, Planus E, Georgess D, Place C, Wang X, Albiges-Rizo C, Jurdic P, Géminard JC. Podosome rings generate forces that drive saltatory osteoclast migration. Mol Biol Cell 2011; 22:3120-6. [PMID: 21737683 PMCID: PMC3164459 DOI: 10.1091/mbc.e11-01-0086] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Podosomes are dynamic, actin-containing adhesion structures that collectively self-organize as rings. In this study, we first show by observing osteoclasts plated on bead-seeded soft substrates that podosome assemblies, such as rings, are involved in tension forces. During the expansion of a podosome ring, substrate displacement is oriented outward, suggesting that podosomal structures push the substrate away. To further elucidate the function of forces generated by podosomes, we analyze osteoclast migration. Determining the centers of mass of the whole cell (G) and of actin (P), we demonstrate that osteoclasts migrate by "jumps" and that the trajectories of G and P are strongly correlated. The velocity of the center of mass as a function of time reveals that osteoclasts rapidly catch up with podosomal structures in a periodic pattern. We conclude that actin dynamics inside the cell are not only correlated with cell migration, but drive it.
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Affiliation(s)
- Shiqiong Hu
- Laboratoire de Physique, UMR 5672, Lyon 69364, France
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26
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Schmidt S, Nakchbandi I, Ruppert R, Kawelke N, Hess MW, Pfaller K, Jurdic P, Fässler R, Moser M. Kindlin-3–mediated signaling from multiple integrin classes is required for osteoclast-mediated bone resorption. J Exp Med 2011. [DOI: 10.1084/jem2083oia7] [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: 11/04/2022] Open
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27
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Schmidt S, Nakchbandi I, Ruppert R, Kawelke N, Hess MW, Pfaller K, Jurdic P, Fässler R, Moser M. Kindlin-3-mediated signaling from multiple integrin classes is required for osteoclast-mediated bone resorption. ACTA ACUST UNITED AC 2011; 192:883-97. [PMID: 21357746 PMCID: PMC3051823 DOI: 10.1083/jcb.201007141] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.9] [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] [Indexed: 01/24/2023]
Abstract
Loss of kindlin-3 impairs activation of β1, β2, and β3 integrin classes, resulting in osteopetrotic defects in osteoclast adhesion and spreading. The blood cell–specific kindlin-3 protein is required to activate leukocyte and platelet integrins. In line with this function, mutations in the KINDLIN-3 gene in man cause immunodeficiency and severe bleeding. Some patients also suffer from osteopetrosis, but the underlying mechanism leading to abnormal bone turnover is unknown. Here we show that kindlin-3–deficient mice develop severe osteopetrosis because of profound adhesion and spreading defects in bone-resorbing osteoclasts. Mechanistically, loss of kindlin-3 impairs the activation of β1, β2, and β3 integrin classes expressed on osteoclasts, which in turn abrogates the formation of podosomes and sealing zones required for bone resorption. In agreement with these findings, genetic ablation of all integrin classes abolishes the development of podosomes, mimicking kindlin-3 deficiency. Although loss of single integrin classes gives rise to podosomes, their resorptive activity is impaired. These findings show that osteoclasts require their entire integrin repertoire to be regulated by kindlin-3 to orchestrate bone homeostasis.
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Affiliation(s)
- Sarah Schmidt
- Max Planck Institute of Biochemistry, D-82152 Martinsried, Germany
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28
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Bonnelye E, Saltel F, Chabadel A, Zirngibl RA, Aubin JE, Jurdic P. Involvement of the orphan nuclear estrogen receptor-related receptor α in osteoclast adhesion and transmigration. J Mol Endocrinol 2010; 45:365-77. [PMID: 20841427 PMCID: PMC2990392 DOI: 10.1677/jme-10-0024] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Revised: 06/23/2010] [Accepted: 09/14/2010] [Indexed: 12/13/2022]
Abstract
The orphan nuclear receptor, estrogen receptor-related receptor α (ERRα) is expressed in osteoblasts and osteoclasts (OCs) and has been proposed to be a modulator of estrogen signaling. To determine the role of ERRα in OC biology, we knocked down ERRα activity by transient transfection of an siRNA directed against ERRα in the RAW264.7 monocyte-macrophage cell line that differentiates into OCs in the presence of receptor activator of nuclear factor κB-ligands and macrophage colony-stimulating factor. In parallel, stable RAW cell lines expressing a dominant-negative form of ERRα and green fluorescent protein (RAW-GFP-ERRαΔAF2) were used. Expression of OC markers was assessed by real-time PCR, and adhesion and transmigration tests were performed. Actin cytoskeletal organization was visualized using confocal microscopy. We found that RAW264.7 cells expressing siRNA directed against ERRα and RAW-GFP-ERRαΔAF2 OCs displayed abnormal spreading, and decreased osteopontin and β3 integrin subunit expression compared with the corresponding control cells. Decreased adhesion and the absence of podosome belts concomitant with abnormal localization of c-src were also observed in RAW-GFP-ERRαΔAF2-derived OCs. In addition, RAW-GFP-ERRαΔAF2-derived OCs failed to transmigrate through osteoblast cell layers. Our data show that the impairment of ERRα function does not alter OC precursor proliferation and differentiation but does alter the adhesion/spreading and migration capacities of mature OCs.
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Affiliation(s)
- Edith Bonnelye
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Université Lyon 1, CNRS, INRA, Ecole Normale Supérieure de Lyon, 69007 Lyon, France.
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29
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Boudiffa M, Wade-Gueye NM, Guignandon A, Vanden-Bossche A, Sabido O, Aubin JE, Jurdic P, Vico L, Lafage-Proust MH, Malaval L. Bone sialoprotein deficiency impairs osteoclastogenesis and mineral resorption in vitro. J Bone Miner Res 2010; 25:2669-79. [PMID: 20812227 DOI: 10.1002/jbmr.245] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Bone sialoprotein (BSP) and osteopontin (OPN) belong to the small integrin-binding ligand N-linked glycoprotein (SIBLING) family, whose members interact with bone cells and bone mineral. Previously, we showed that BSP knockout (BSP(-/-) ) mice have a higher bone mass than wild type (BSP(+/+) ) littermates, with very low bone-formation activity and reduced osteoclast surfaces and numbers. Here we report that approximately twofold fewer tartrate-resistant acid phosphatase (TRACP)-positive cells and approximately fourfold fewer osteoclasts form in BSP(-/-) compared with BSP(+/+) spleen cell cultures. BSP(-/-) preosteoclast cultures display impaired proliferation and enhanced apoptosis. Addition of RGD-containing proteins restores osteoclast number in BSP(-/-) cultures to BSP(+/+) levels. The expression of osteoclast-associated genes is markedly altered in BSP(-/-) osteoclasts, with reduced expression of cell adhesion and migration genes (αV integrin chain and OPN) and increased expression of resorptive enzymes (TRACP and cathepsin K). The migration of preosteoclasts and mature osteoclasts is impaired in the absence of BSP, but resorption pit assays on dentine slices show no significant difference in pit numbers between BSP(+/+) and BSP(-/-) osteoclasts. However, resorption of mineral-coated slides by BSP(-/-) osteoclasts is markedly impaired but is fully restored by coating the mineral substrate with hrBSP and partly restored by hrOPN coating. In conclusion, lack of BSP affects both osteoclast formation and activity, which is in accordance with in vivo findings. Our results also suggest at least some functional redundancy between BSP and OPN that remains to be clarified.
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30
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Hu S, Biben T, Wang X, Jurdic P, Géminard JC. Internal dynamics of actin structures involved in the cell motility and adhesion: Modeling of the podosomes at the molecular level. J Theor Biol 2010; 270:25-30. [PMID: 21075123 DOI: 10.1016/j.jtbi.2010.11.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2010] [Revised: 10/11/2010] [Accepted: 11/09/2010] [Indexed: 10/25/2022]
Abstract
Podosomes are involved in the spreading and motility of various cells to a solid substrate. These dynamical structures, which have been proven to consist of a dense actin core surrounded by an actin cloud, nucleate when the cell comes in the vicinity of a substrate. During the cell spreading or motion, the podosomes exhibit collective dynamical behaviors, forming clusters and rings. We design a simple model aiming at the description of internal molecular turnover in a single podosome: actin filaments form a brush which grows from the cellular membrane whereas their size is regulated by the action of a severing agent, the gelsolin. In this framework, the characteristic sizes of the core and of the cloud, as well as the associated characteristic times are expressed in terms of basic ingredients. Moreover, the collocation of the actin and gelsolin in the podosome is understood as a natural result of the internal dynamics.
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Affiliation(s)
- S Hu
- Laboratoire de Physique, Université de Lyon, Ecole Normale Supérieure de Lyon-CNRS, 69364 Lyon cedex 07, France
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31
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Perrier A, Dumas V, Linossier MT, Fournier C, Jurdic P, Rattner A, Vico L, Guignandon A. Apatite content of collagen materials dose-dependently increases pre-osteoblastic cell deposition of a cement line-like matrix. Bone 2010; 47:23-33. [PMID: 20303420 DOI: 10.1016/j.bone.2010.03.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2010] [Revised: 03/08/2010] [Accepted: 03/11/2010] [Indexed: 11/26/2022]
Abstract
Bone matrix, mainly composed of type I collagen and apatite, is constantly modified during the bone remodeling process, which exposes bone cells to various proportions of mineralized collagen within bone structural units. Collagen-mineralized substrates have been shown to increase osteoblast activities. We hypothesized that such effects may be explained by a rapid secretion of specific growth factors and/or deposition of specific matrix proteins. Using MC3T3-E1 seeded for 32h on collagen substrates complexed with various apatite contents, we found that pre-osteoblasts in contact with mineralized collagen gave rise to a dose-dependent deposit of Vascular Endothelial Growth Factor-A (VEGF-A) and RGD-containing proteins such as osteopontin (OPN) and fibronectin (FN). This RGD-matrix deposition reinforced the cell adhesion to collagen-mineralized substrates. It was also observed that, on these substrates, this matrix was elaborated concomitantly to an increased cell migration, allowing a homogeneous coverage of the sample. This particular surface activation was probably done firstly to reinforce cell survival (VEGF-A) and adhesion (OPN, FN) and secondly to recruit and prepare surfaces for subsequent bone cell activity.
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Affiliation(s)
- A Perrier
- Université de Lyon, F42023, Saint-Etienne, France
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32
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Gallois A, Mazzorana M, Vacher J, Jurdic P. Ostéoimmunologie : une vision globale et intégrée du tissu squelettique et du système immunitaire. Med Sci (Paris) 2009; 25:259-65. [DOI: 10.1051/medsci/2009253259] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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33
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de Frutos CA, Dacquin R, Vega S, Jurdic P, Machuca-Gayet I, Nieto MA. Snail1 controls bone mass by regulating Runx2 and VDR expression during osteoblast differentiation. EMBO J 2009; 28:686-96. [PMID: 19197242 PMCID: PMC2647771 DOI: 10.1038/emboj.2009.23] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [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: 09/19/2008] [Accepted: 01/13/2009] [Indexed: 01/25/2023] Open
Abstract
Bone undergoes continuous remodelling throughout adult life, and the equilibrium between bone formation by osteoblasts and bone resorption by osteoclasts defines the final bone mass. Here we show that Snail1 regulates this balance by controlling osteoblast differentiation. Snail1 is necessary for the early steps of osteoblast development, and it must be downregulated for their final differentiation. At the molecular level, Snail1 controls bone mass by repressing the transcription of both the osteoblast differentiation factor Runx2 and the vitamin D receptor (VDR) genes in osteoblasts. Sustained activation of Snail1 in transgenic mice provokes deficient osteoblast differentiation, which, together with the loss of vitamin D signalling in the bone, also impairs osteoclastogenesis. Indeed, the mineralisation of the bone matrix is severely affected, leading to hypocalcemia-independent osteomalacia. Our data show that the impact of Snail1 activity on the osteoblast population regulates the course of bone cells differentiation and ensures normal bone remodelling.
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34
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Bonnelye E, Laurin N, Jurdic P, Hart DA, Aubin JE. Estrogen receptor-related receptor-alpha (ERR-alpha) is dysregulated in inflammatory arthritis. Rheumatology (Oxford) 2008; 47:1785-91. [PMID: 18927192 DOI: 10.1093/rheumatology/ken368] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023] Open
Abstract
OBJECTIVES Subchondral bone loss is a characteristic feature of inflammatory arthritis. Recently, estrogen receptor-related receptor-alpha (ERR-alpha), an orphan nuclear receptor, has been found to be involved in activation of macrophages. We hypothesized that ERR-alpha which is expressed and also functional in articular chondrocytes, osteoblasts and osteoclasts, may be involved in rodent models of inflammatory arthritis. METHODS Erosive arthritis was induced in DBA/1 mice by injection of type II collagen in Freund's complete adjuvant. RNA was isolated from the bone and joints and expression of ERR-alpha and cartilage (GDF5 and Col2a1) and bone [bone sialoprotein (BSP) and osteocalcin (OCN)] markers was analysed by semi-quantitative PCR. RESULTS We report for the first time that the expression of ERR-alpha is dysregulated in bones and joints in a mouse model of inflammatory arthritis. Specifically, we show that ERR-alpha expression is down-regulated early in bone and later in joints of mice with type II CIA. Concomitantly, temporal changes were observed in GDF-5 and Col2a1 expression in joints following both initial injection and booster injection of type II collagen. Similarly, down-regulation of ERR-alpha mRNA expression in subchondral bone in mice with induced joint inflammation was also paralleled by down-regulation of markers of bone formation (BSP, OCN). CONCLUSIONS These data suggest that dysregulation of ERR-alpha expression may precede and contribute to the destruction of cartilage and bone accompanying inflammatory arthritis.
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Affiliation(s)
- E Bonnelye
- Department of Molecular Genetics, Faculty of Medicine, University of Toronto, Room 6233, Medical Sciences Building, 1 King's College Circle, Toronto, ON M5S 1A8, Canada
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35
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Despars G, Anginot A, Vivier E, Mazzorana M, Jurdic P. 44 The overexpression of DAP12 leads to gain of osteoclast function in vitro with age-related onset of ostepenia in vivo. Cytokine 2008. [DOI: 10.1016/j.cyto.2008.07.085] [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: 10/21/2022]
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36
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Saltel F, Chabadel A, Bonnelye E, Jurdic P. Actin cytoskeletal organisation in osteoclasts: A model to decipher transmigration and matrix degradation. Eur J Cell Biol 2008; 87:459-68. [DOI: 10.1016/j.ejcb.2008.01.001] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2007] [Revised: 01/03/2008] [Accepted: 01/04/2008] [Indexed: 01/13/2023] Open
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37
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Malaval L, Wade-Guéye NM, Boudiffa M, Fei J, Zirngibl R, Chen F, Laroche N, Roux JP, Burt-Pichat B, Duboeuf F, Boivin G, Jurdic P, Lafage-Proust MH, Amédée J, Vico L, Rossant J, Aubin JE. Bone sialoprotein plays a functional role in bone formation and osteoclastogenesis. J Biophys Biochem Cytol 2008. [DOI: 10.1083/jcb1814oia14] [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: 11/22/2022] Open
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38
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Malaval L, Wade-Guéye NM, Boudiffa M, Fei J, Zirngibl R, Chen F, Laroche N, Roux JP, Burt-Pichat B, Duboeuf F, Boivin G, Jurdic P, Lafage-Proust MH, Amédée J, Vico L, Rossant J, Aubin JE. Bone sialoprotein plays a functional role in bone formation and osteoclastogenesis. ACTA ACUST UNITED AC 2008; 205:1145-53. [PMID: 18458111 PMCID: PMC2373846 DOI: 10.1084/jem.20071294] [Citation(s) in RCA: 159] [Impact Index Per Article: 9.9] [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] [Indexed: 12/26/2022]
Abstract
Bone sialoprotein (BSP) and osteopontin (OPN) are both highly expressed in bone, but their functional specificities are unknown. OPN knockout (−/−) mice do not lose bone in a model of hindlimb disuse (tail suspension), showing the importance of OPN in bone remodeling. We report that BSP−/− mice are viable and breed normally, but their weight and size are lower than wild-type (WT) mice. Bone is undermineralized in fetuses and young adults, but not in older (≥12 mo) BSP−/− mice. At 4 mo, BSP−/− mice display thinner cortical bones than WT, but greater trabecular bone volume with very low bone formation rate, which indicates reduced resorption, as confirmed by lower osteoclast surfaces. Although the frequency of total colonies and committed osteoblast colonies is the same, fewer mineralized colonies expressing decreased levels of osteoblast markers form in BSP−/− versus WT bone marrow stromal cultures. BSP−/− hematopoietic progenitors form fewer osteoclasts, but their resorptive activity on dentin is normal. Tail-suspended BSP−/− mice lose bone in hindlimbs, as expected. In conclusion, BSP deficiency impairs bone growth and mineralization, concomitant with dramatically reduced bone formation. It does not, however, prevent the bone loss resulting from loss of mechanical stimulation, a phenotype that is clearly different from OPN−/− mice.
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Affiliation(s)
- Luc Malaval
- Institut National de Santé et de Recherche Médicale U890, IFR 143, Université Jean-Monnet, Saint-Etienne, F42023, France
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39
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Machesky L, Jurdic P, Hinz B. Grab, stick, pull and digest: the functional diversity of actin-associated matrix-adhesion structures. Workshop on Invadopodia, Podosomes and Focal Adhesions in Tissue Invasion. EMBO Rep 2008; 9:139-43. [PMID: 18202718 DOI: 10.1038/sj.embor.7401162] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2007] [Accepted: 12/14/2007] [Indexed: 11/09/2022] Open
Affiliation(s)
- Laura Machesky
- CRUK Beatson Institute for Cancer Research, Switchback Road, Bearsden, Glasgow G61 1BD, Scotland
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40
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Bonnelye E, Chabadel A, Saltel F, Jurdic P. Dual effect of strontium ranelate: stimulation of osteoblast differentiation and inhibition of osteoclast formation and resorption in vitro. Bone 2008; 42:129-38. [PMID: 17945546 DOI: 10.1016/j.bone.2007.08.043] [Citation(s) in RCA: 509] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2007] [Revised: 07/30/2007] [Accepted: 08/24/2007] [Indexed: 11/26/2022]
Abstract
Strontium ranelate is a newly developed drug that has been shown to significantly reduce the risk of vertebral and non-vertebral fractures, including those of the hip, in postmenopausal women with osteoporosis. In contrast to other available treatments for osteoporosis, strontium ranelate increases bone formation and decreases resorption. In this study, the dual mode of action of strontium ranelate in bone was tested in vitro, on primary murine osteoblasts and osteoclasts derived from calvaria and spleen cells, respectively. We show that strontium ranelate treatment, either continuously or during proliferation or differentiation phases of mouse calvaria cells, stimulates osteoblast formation. Indeed after 22 days of continuous treatment with strontium ranelate, the expression of the osteoblast markers ALP, BSP and OCN was increased, and was combined with an increase in bone nodule numbers. On the other hand, the number of mature osteoclasts strongly decreased after strontium ranelate treatment. Similarly to previous studies, we confirm that osteoclasts resorbing activity was also reduced but we found that strontium ranelate treatment was associated with a disruption of the osteoclast actin-containing sealing zone. Therefore, our in vitro assays performed on primary murine bone cells confirmed the dual action of strontium ranelate in vivo as an anabolic agent on bone remodeling. It stimulates bone formation through its positive action on osteoblast differentiation and function, and decreases osteoclast differentiation as well as function by disrupting actin cytoskeleton organization.
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Affiliation(s)
- Edith Bonnelye
- Laboratoire de Génomique Fonctionelle de Lyon, Université de Lyon-UMR5242, CNRS/INRA/ENS/Université Lyon1. IFR 128 Biosciences Lyon-Gerland, 46, allée d'Italie, 69007 Lyon, France
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41
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Badowski C, Pawlak G, Grichine A, Chabadel A, Oddou C, Jurdic P, Pfaff M, Albigès-Rizo C, Block MR. Paxillin phosphorylation controls invadopodia/podosomes spatiotemporal organization. Mol Biol Cell 2007; 19:633-45. [PMID: 18045996 DOI: 10.1091/mbc.e06-01-0088] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
In Rous sarcoma virus (RSV)-transformed baby hamster kidney (BHK) cells, invadopodia can self-organize into rings and belts, similarly to podosome distribution during osteoclast differentiation. The composition of individual invadopodia is spatiotemporally regulated and depends on invadopodia localization along the ring section: the actin core assembly precedes the recruitment of surrounding integrins and integrin-linked proteins, whereas the loss of the actin core was a prerequisite to invadopodia disassembly. We have shown that invadopodia ring expansion is controlled by paxillin phosphorylations on tyrosine 31 and 118, which allows invadopodia disassembly. In BHK-RSV cells, ectopic expression of the paxillin mutant Y31F-Y118F induces a delay in invadopodia disassembly and impairs their self-organization. A similar mechanism is unraveled in osteoclasts by using paxillin knockdown. Lack of paxillin phosphorylation, calpain or extracellular signal-regulated kinase inhibition, resulted in similar phenotype, suggesting that these proteins belong to the same regulatory pathways. Indeed, we have shown that paxillin phosphorylation promotes Erk activation that in turn activates calpain. Finally, we observed that invadopodia/podosomes ring expansion is required for efficient extracellular matrix degradation both in BHK-RSV cells and primary osteoclasts, and for transmigration through a cell monolayer.
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Affiliation(s)
- Cédric Badowski
- Equipe DySAD, Institut Albert Bonniot, Institut National de la Santé et de la Recherche Médicale U823, 38042 Grenoble Cedex 09, France
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42
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Chabadel A, Bañon-Rodríguez I, Cluet D, Rudkin BB, Wehrle-Haller B, Genot E, Jurdic P, Anton IM, Saltel F. CD44 and beta3 integrin organize two functionally distinct actin-based domains in osteoclasts. Mol Biol Cell 2007; 18:4899-910. [PMID: 17898081 PMCID: PMC2096584 DOI: 10.1091/mbc.e07-04-0378] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The actin cytoskeleton of mature osteoclasts (OCs) adhering to nonmineralized substrates is organized in a belt of podosomes reminiscent of the sealing zone (SZ) found in bone resorbing OCs. In this study, we demonstrate that the belt is composed of two functionally different actin-based domains: podosome cores linked with CD44, which are involved in cell adhesion, and a diffuse cloud associated with beta3 integrin, which is involved in cell adhesion and contraction. Wiskott Aldrich Syndrome Protein (WASp) Interacting Protein (WIP)-/- OCs were devoid of podosomes, but they still exhibited actin clouds. Indeed, WIP-/- OCs show diminished expression of WASp, which is required for podosome formation. CD44 is a novel marker of OC podosome cores and the first nonintegrin receptor detected in these structures. The importance of CD44 is revealed by showing that its clustering restores podosome cores and WASp expression in WIP-/- OCs. However, although CD44 signals are sufficient to form a SZ, the presence of WIP is indispensable for the formation of a fully functional SZ.
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Affiliation(s)
- Anne Chabadel
- *Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Institut Fédératif Biosciences Gerland Lyon Sud, Université Lyon 1, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Ecole Normale Supérieure de Lyon, 69364 Lyon, France
| | - Inmaculada Bañon-Rodríguez
- Centro de Biología Molecular “Severo Ochoa,” Consejo Superior de Investigaciones Cientificas-Universidad Autonoma de Madrid, 28049 Madrid, Spain
| | - David Cluet
- Laboratoire de Biologie Moléculaire de la Cellule, Unite Mixte de Recherche 5239 Centre National de la Recherche Scientifique/Ecole Normale Supérieure Lyon, Université Lyon I, Institut Fédératif de Recherche “BioSciences Lyon-Gerland,” Ecole Normale Superieure de Lyon, 69364 Lyon Cedex 07, France
| | - Brian B. Rudkin
- Laboratoire de Biologie Moléculaire de la Cellule, Unite Mixte de Recherche 5239 Centre National de la Recherche Scientifique/Ecole Normale Supérieure Lyon, Université Lyon I, Institut Fédératif de Recherche “BioSciences Lyon-Gerland,” Ecole Normale Superieure de Lyon, 69364 Lyon Cedex 07, France
| | - Bernhard Wehrle-Haller
- Department of Cellular Physiology and Metabolism, Centre Médical Universitaire, 1211 Geneva 4, Switzerland; and
| | - Elisabeth Genot
- European Institute of Chemistry and Biology, Unité Institut National de la Santé et de la Recherche Médicale 889, Université Victor Segalen Bordeaux 2, L'Institut Fédératif de Recherche 66, 33 600 Pessac, France
| | - Pierre Jurdic
- *Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Institut Fédératif Biosciences Gerland Lyon Sud, Université Lyon 1, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Ecole Normale Supérieure de Lyon, 69364 Lyon, France
| | - Ines M. Anton
- Centro de Biología Molecular “Severo Ochoa,” Consejo Superior de Investigaciones Cientificas-Universidad Autonoma de Madrid, 28049 Madrid, Spain
| | - Frédéric Saltel
- *Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Institut Fédératif Biosciences Gerland Lyon Sud, Université Lyon 1, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Ecole Normale Supérieure de Lyon, 69364 Lyon, France
- European Institute of Chemistry and Biology, Unité Institut National de la Santé et de la Recherche Médicale 889, Université Victor Segalen Bordeaux 2, L'Institut Fédératif de Recherche 66, 33 600 Pessac, France
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Anginot A, Dacquin R, Mazzorana M, Jurdic P. Lymphocytes and the Dap12 adaptor are key regulators of osteoclast activation associated with gonadal failure. PLoS One 2007; 2:e585. [PMID: 17611620 PMCID: PMC1899087 DOI: 10.1371/journal.pone.0000585] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [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: 05/09/2007] [Accepted: 05/30/2007] [Indexed: 01/05/2023] Open
Abstract
Bone resorption by osteoclasts is necessary to maintain bone homeostasis. Osteoclast differentiation from hematopoietic progenitors and their activation depend on M-CSF and RANKL, but also requires co-stimulatory signals acting through receptors associated with DAP12 and FcRgamma adaptors. Dap12 mutant mice (KDelta75) are osteopetrotic due to inactive osteoclasts but, surprisingly, these mice are more sensitive than WT mice to bone loss following an ovariectomy. Because estrogen withdrawal is known to disturb bone mass, at least in part, through lymphocyte interaction, we looked at the role of mature lymphocytes on osteoclastogenesis and bone mass in the absence of functional DAP12. Lymphocytes were found to stimulate an early osteoclast differentiation response from Dap12-deficient progenitors in vitro. In vivo, Rag1-/- mice lacking mature lymphocytes did not exhibit any bone phenotype, but lost their bone mass after ovariectomy like KDelta75 mice. KDelta75;Rag1-/- double mutant female mice exhibited a more severe osteopetrosis than Dap12-deficient animals but lost their bone mass after ovariectomy, like single mutants. These results suggest that both DAP12 and mature lymphocytes act synergistically to maintain bone mass under physiological conditions, while playing similar but not synergistic co-stimulatory roles in protecting bone loss after gonadal failure. Thus, our data support a role for lymphocytes during osteoclast differentiation and suggest that they may function as accessory cells when regular osteoclast function is compromised.
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Affiliation(s)
- Adrienne Anginot
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Institut Fédératif Biosciences Gerland Lyon Sud, Université Lyon 1, CNRS, INRA, Ecole Normale Supérieure, Lyon, France
| | - Romain Dacquin
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Institut Fédératif Biosciences Gerland Lyon Sud, Université Lyon 1, CNRS, INRA, Ecole Normale Supérieure, Lyon, France
| | - Marlène Mazzorana
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Institut Fédératif Biosciences Gerland Lyon Sud, Université Lyon 1, CNRS, INRA, Ecole Normale Supérieure, Lyon, France
| | - Pierre Jurdic
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Institut Fédératif Biosciences Gerland Lyon Sud, Université Lyon 1, CNRS, INRA, Ecole Normale Supérieure, Lyon, France
- * To whom correspondence should be addressed. E-mail:
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Duplat D, Chabadel A, Gallet M, Berland S, Bédouet L, Rousseau M, Kamel S, Milet C, Jurdic P, Brazier M, Lopez E. The in vitro osteoclastic degradation of nacre. Biomaterials 2007; 28:2155-62. [PMID: 17258312 DOI: 10.1016/j.biomaterials.2007.01.015] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2006] [Accepted: 01/04/2007] [Indexed: 11/29/2022]
Abstract
Osteoclast activity was studied on nacre, the mother of pearl (MOP) in order to assess the plasticity of bone resorbing cells and their capacity to adapt to a biomineralized material with a different organic and mineral composition from that of its natural substrate, bone. Pure MOP, a natural biomineralized CaCO(3) material, was obtained from Pinctada oyster shell. When implanted in the living system, nacre has proven to be a sustainable bone grafting material although a limited surface degradation process. Osteoclast stem cells and mature osteoclasts were cultured on MOP substrate and osteoclast precursor cells were shown to differentiate into osteoclasts capable of resorbing nacre substrate. However, analysis of the organization of the cytoskeleton showed that both a sealing zone and a podosome structure were observed on the nacre substrate. Moreover, MOP resorption efficiency was consistently found to be lower than that of bone and appeared to be a limited process.
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Affiliation(s)
- D Duplat
- Département Milieux et Peuplements Aquatiques USM 401, UMR/CNRS 5178 BOME, Muséum National d'Histoire Naturelle, 43, rue Cuvier, 75231 Paris cedex 05, France.
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Speziani C, Rivollier A, Gallois A, Coury F, Mazzorana M, Azocar O, Flacher M, Bella C, Tebib J, Jurdic P, Rabourdin-Combe C, Delprat C. Murine dendritic cell transdifferentiation into osteoclasts is differentially regulated by innate and adaptive cytokines. Eur J Immunol 2007; 37:747-57. [PMID: 17304626 DOI: 10.1002/eji.200636534] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Dendritic cells (DC) are the mononuclear cells that initiate adaptive immune responses. Osteoclasts (OC) are the multinucleated giant cells that resorb bone. As previously described for human conventional DC (cDC), we demonstrate that murine cDC, either in vitro generated from Fms-like tyrosine kinase 3 (Flt3)+ bone marrow progenitors or ex vivo purified from spleen, are able to develop into OC in response to M-CSF and receptor activator of NF-kappaB ligand (RANKL) in vitro. This transdifferentiation is driven by the immune environment that controls cDC maturation, cell fusion, tartrate-resistant acid phosphatase (TRAP) and bone resorption activities. Only immature cDC have the capacity to become OC since mature cDC or plasmacytoid DC do not. Additions of the pro-inflammatory cytokines, such as IL-1beta and TNF-alpha, or human rheumatoid synovial fluid, increase murine cDC transdifferentiation into OC, whereas IFN-alpha inhibits it. The adaptive cytokine, IFN-gamma, inhibits cDC fusion while IL-4 increases it. IL-2, IFN-gamma and IL-4 inhibit TRAP and bone resorption activities contrary to IL-10, which enhances both activities. A putative new "immune multinucleated giant cell" unable to resorb bone, which is formed owing to IL-4, is underlined. The future analysis of cDC transdifferentiation into OC in murine models of inflammatory arthritis will give us the quantitative importance of this phenomenon in vivo.
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Affiliation(s)
- Carole Speziani
- INSERM, U503, Université de Lyon, Université Lyon 1, IFR128, Lyon, France
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Bonnelye E, Zirngibl RA, Jurdic P, Aubin JE. The orphan nuclear estrogen receptor-related receptor-alpha regulates cartilage formation in vitro: implication of Sox9. Endocrinology 2007; 148:1195-205. [PMID: 17170100 DOI: 10.1210/en.2006-0962] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We report for the first time the expression of estrogen receptor-related receptor (ERR)-alpha in fetal and adult rat chondrocytes in growth plate and articular cartilage and the rat chondrogenic cell line C5.18 cells in vitro. ERRalpha mRNA and protein were expressed from proliferating chondrocyte to mature chondrocyte stages. We show that overexpressing ERRalpha in C5.18 cell cultures induces an increase in Sry-type high-mobility-group box transcription factor (Sox)-9 expression, a master gene in cartilage formation. In parallel, we report Sox9 promoter regulation by ERRalpha in C5.18 cells. To assess a functional role for ERRalpha in chondrogenesis, its expression was blocked by antisense oligonucleotides in C5.18 cell cultures, and this led to inhibition of cartilage formation associated with down-regulation of Sox9 and Indian hedgehog expression and maturation of proliferating chondrocytes into hypertrophic chondrocytes in vitro. Together these results implicate ERRalpha in the formation and maintenance of cartilage and also suggest that agonists and antagonists of ERRalpha may be useful as therapeutic agents in a wide variety of diseases affecting cartilage and joints.
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Affiliation(s)
- E Bonnelye
- Department of Molecular and Medical Genetics, Faculty of Medicine, University of Toronto, Room 6230, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, Canada M5S 1A8
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Abstract
UNLABELLED Even though it is assumed that multinucleated osteoclasts are migrating cells on the bone surface to be resorbed, we show that they can also selectively transmigrate through layers of cells usually found in the bone microenvironment. This activity is associated with c-src and MMPs and can be stimulated by bone metastatic breast cancer cells, a process blocked by bisphosphonate treatment. INTRODUCTION Osteoclasts have an hematopoietic origin and are bone-resorbing cells. Monocytic precursors migrate to the bone surface where they fuse to form multinucleated osteoclasts able to migrate over the bone surface. We studied whether multinucleated osteoclasts were also able to transmigrate through tissues. MATERIALS AND METHODS Murine spleen-derived and green fluorescent protein (GFP)-Raw derived osteoclasts were seeded on osteoblasts and several other cell types. The cells were fixed for 20 minutes, 4 or 12 h after osteoclast seeding, and stained with phalloidin to visualize actin using confocal microscopy. Drugs such as PP2 and GM6001, inhibitors of c-src and matrix metalloproteinases (MMPs), respectively, and risedronate were used to determine osteoclast transmigration regulating factors. RESULTS We observed by confocal microscopy that multinucleated osteoclasts specifically transmigrate through confluent layers of various cell types present in the bone microenvironment in vitro. This is an efficient process associated with c-src and MMPs but is independent of podosomes. Moreover, conditioned medium from bone metastatic breast cancer cells stimulates osteoclast transmigration in vitro, a process inhibited by bisphosphonate treatment. CONCLUSIONS Our data describe a new property of mature multinucleated osteoclasts to transmigrate through various cell types. The ability to control this highly regulated osteoclast transmigration process may offer new therapeutic strategies for bone diseases associated with an imbalance in bone remodeling caused by excessive osteoclast resorption.
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Affiliation(s)
- Frédéric Saltel
- Laboratoire de Biologie Moléculaire de la Cellule, Lyon, France
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Davoust N, Vuaillat C, Cavillon G, Domenget C, Hatterer E, Bernard A, Dumontel C, Jurdic P, Malcus C, Confavreux C, Belin MF, Nataf S. Bone marrow CD34+/B220+ progenitors target the inflamed brain and display in vitro differentiation potential toward microglia. FASEB J 2006; 20:2081-92. [PMID: 17012260 DOI: 10.1096/fj.05-5593com] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Recent evidence indicates that microglial cells may not derive from blood circulating mature monocytes as they express features of myeloid progenitors. Here, we observed that a subpopulation of microglial cells expressed CD34 and B220 antigens during brain development. We thus hypothesized that microglia, or a subset of microglial cells, originate from blood circulating CD34+/B220+ myeloid progenitors, which could target the brain under developmental or neuroinflammatory conditions. Using experimental allergic encephalomyelitis (EAE) as a model of chronic neuroinflammation, we found that a discrete population of CD34+/B220+ cells expands in both blood and brain of diseased animals. In EAE mice, intravenous transfer experiments showed that macrophage-colony stimulating factor (M-CSF) -expanded CD34+ myeloid progenitors target the inflamed central nervous system (CNS) while keeping their immature phenotype. Based on these results, we then assessed whether CD34+/B220+ cells display in vitro differentiation potential toward microglia. For this purpose, CD34+/B220+ cells were sorted from M-CSF-stimulated bone marrow (BM) cultures and exposed to a glial cell conditioned medium. Under these experimental conditions, CD34+/B220+ cells were able to differentiate into microglial-like cells showing the morphological and phenotypic features of native microglia. Overall, our data suggest that under developmental or neuroinflammatory conditions, a subpopulation of microglial cells derive from CNS-invading CD34+/B220+ myeloid progenitors.
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Affiliation(s)
- N Davoust
- INSERM U433, IFR des Neurosciences de Lyon, Faculté de Médecine Laënnec, Lyon, France
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Breton P, Mazzorana M, Jurdic P, Glehen A, Bouletreau P. O.106 Tissue response to the degradation of resorbable copolymers in orthognathic surgery. J Craniomaxillofac Surg 2006. [DOI: 10.1016/s1010-5182(06)60136-4] [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: 10/23/2022] Open
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Niu Y, Roy F, Saltel F, Andrieu-Soler C, Dong W, Chantegrel AL, Accardi R, Thépot A, Foiselle N, Tommasino M, Jurdic P, Sylla BS. A nuclear export signal and phosphorylation regulate Dok1 subcellular localization and functions. Mol Cell Biol 2006; 26:4288-301. [PMID: 16705178 PMCID: PMC1489083 DOI: 10.1128/mcb.01817-05] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Dok1 is believed to be a mainly cytoplasmic adaptor protein which down-regulates mitogen-activated protein kinase activation, inhibits cell proliferation and transformation, and promotes cell spreading and cell migration. Here we show that Dok1 shuttles between the nucleus and cytoplasm. Treatment of cells with leptomycin B (LMB), a specific inhibitor of the nuclear export signal (NES)-dependent receptor CRM1, causes nuclear accumulation of Dok1. We have identified a functional NES (348LLKAKLTDPKED359) that plays a major role in the cytoplasmic localization of Dok1. Src-induced tyrosine phosphorylation prevented the LMB-mediated nuclear accumulation of Dok1. Dok1 cytoplasmic localization is also dependent on IKKbeta. Serum starvation or maintaining cells in suspension favor Dok1 nuclear localization, while serum stimulation, exposure to growth factor, or cell adhesion to a substrate induce cytoplasmic localization. Functionally, nuclear NES-mutant Dok1 had impaired ability to inhibit cell proliferation and to promote cell spreading and cell motility. Taken together, our results provide the first evidence that Dok1 transits through the nucleus and is actively exported into the cytoplasm by the CRM1 nuclear export system. Nuclear export modulated by external stimuli and phosphorylation may be a mechanism by which Dok1 is maintained in the cytoplasm and membrane, thus regulating its signaling functions.
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Affiliation(s)
- Yamei Niu
- Infections and Cancer Biology Group, International Agency for Research on Cancer, 150 cours Albert-Thomas, 69008 Lyon, France
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