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Frontiñán-Rubio J, Llanos-González E, García-Carpintero S, Peinado JR, Ballesteros-Yáñez I, Rayo MV, de la Fuente J, Pérez-García VM, Perez-Romasanta LA, Malumbres M, Alcaín FJ, Durán-Prado M. CoQ 10 reduces glioblastoma growth and infiltration through proteome remodeling and inhibition of angiogenesis and inflammation. Cell Oncol (Dordr) 2023; 46:65-77. [PMID: 36319818 PMCID: PMC9947058 DOI: 10.1007/s13402-022-00734-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2022] [Indexed: 11/05/2022] Open
Abstract
PURPOSE Most monotherapies available against glioblastoma multiforme (GBM) target individual hallmarks of this aggressive brain tumor with minimal success. In this article, we propose a therapeutic strategy using coenzyme Q10 (CoQ10) as a pleiotropic factor that crosses the blood-brain barrier and accumulates in cell membranes acting as an antioxidant, and in mitochondrial membranes as a regulator of cell bioenergetics and gene expression. METHODS Xenografts of U251 cells in nu/nu mice were used to assay tumor growth, hypoxia, angiogenesis, and inflammation. An orthotopic model was used to explore microglial infiltration, tumor growth, and invasion into the brain parenchyma. Cell proliferation, migration, invasion, proteome remodeling, and secretome were assayed in vitro. Conditioned media were used to assay angiogenesis, monocyte chemoattraction, and differentiation into macrophages in vitro. RESULTS CoQ10 treatment decreased tumor volume in xenografts and orthotopic models, although its effect on tumor cell proliferation was not direct. Tumors from mice treated with CoQ10 were less hypoxic and vascularized, having less infiltration from inflammatory cells. Treatment-induced downregulation of HIF-1α and NF-kB led to a complete remodeling of the tumor cells proteome and secretome, impacting angiogenesis, monocyte infiltration, and their differentiation into macrophages. Besides, tumor cell migration and invasion were drastically restricted by mechanisms involving modulation of the actin cytoskeleton and downregulation of matrix metalloproteases (MMPs). CONCLUSIONS CoQ10 has a pleiotropic effect on GBM growth, targeting several hallmarks simultaneously. Thus, its integration into current treatments of this fatal disease should be considered.
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Affiliation(s)
- Javier Frontiñán-Rubio
- Department of Medical Sciences, Faculty of Medicine, University of Castilla-La Mancha, 13071, Ciudad Real, Spain
- Oxidative Stress and Neurodegeneration Group, Faculty of Medicine, Regional Centre for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Emilio Llanos-González
- Department of Medical Sciences, Faculty of Medicine, University of Castilla-La Mancha, 13071, Ciudad Real, Spain
- Oxidative Stress and Neurodegeneration Group, Faculty of Medicine, Regional Centre for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Sonia García-Carpintero
- Department of Medical Sciences, Faculty of Medicine, University of Castilla-La Mancha, 13071, Ciudad Real, Spain
- Oxidative Stress and Neurodegeneration Group, Faculty of Medicine, Regional Centre for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Juan Ramón Peinado
- Department of Medical Sciences, Faculty of Medicine, University of Castilla-La Mancha, 13071, Ciudad Real, Spain
- Oxidative Stress and Neurodegeneration Group, Faculty of Medicine, Regional Centre for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Inmaculada Ballesteros-Yáñez
- EMAS Group, Faculty of Medicine, Regional Centre for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Margarita Villar Rayo
- SaBio Research Group, Hunting Resources Research Institute (IREC), Ciudad Real, Spain
| | - José de la Fuente
- SaBio Research Group, Hunting Resources Research Institute (IREC), Ciudad Real, Spain
| | - Víctor M Pérez-García
- Laboratory of Mathematical Oncology, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Luis A Perez-Romasanta
- Radiology and Medicinal Physics, Institute for Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
| | - Marcos Malumbres
- Cell Division and Cancer Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Francisco J Alcaín
- Department of Medical Sciences, Faculty of Medicine, University of Castilla-La Mancha, 13071, Ciudad Real, Spain.
- Oxidative Stress and Neurodegeneration Group, Faculty of Medicine, Regional Centre for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain.
| | - Mario Durán-Prado
- Department of Medical Sciences, Faculty of Medicine, University of Castilla-La Mancha, 13071, Ciudad Real, Spain.
- Oxidative Stress and Neurodegeneration Group, Faculty of Medicine, Regional Centre for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain.
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Mori M, Clausson CM, Sanden C, Jönsson J, Andersson CK, Siddhuraj P, Shikhagaie M, Åkesson K, Bergqvist A, Löfdahl CG, Erjefält JS. Expansion of Phenotypically Altered Dendritic Cell Populations in the Small Airways and Alveolar Parenchyma in Patients with Chronic Obstructive Pulmonary Disease. J Innate Immun 2022; 15:188-203. [PMID: 35998572 PMCID: PMC10643891 DOI: 10.1159/000526080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 05/06/2022] [Indexed: 11/19/2022] Open
Abstract
Contrasting the antigen-presenting dendritic cells (DCs) in the conducting airways, the alveolar DC populations in human lungs have remained poorly investigated. Consequently, little is known about how alveolar DCs are altered in diseases such as chronic obstructive pulmonary disease (COPD). This study maps multiple tissue DC categories in the distal lung across COPD severities. Specifically, single-multiplex immunohistochemistry was applied to quantify langerin/CD207+, CD1a+, BDCA2+, and CD11c+ subsets in distal lung compartments from patients with COPD (GOLD stage I-IV) and never-smoking and smoking controls. In the alveolar parenchyma, increased numbers of CD1a+langerin- (p < 0.05) and BDCA-2+ DCs (p < 0.001) were observed in advanced COPD compared with controls. Alveolar CD11c+ DCs also increased in advanced COPD (p < 0.01). In small airways, langerin+ and BDCA-2+ DCs were also significantly increased. Contrasting the small airway DCs, most alveolar DC subsets frequently extended luminal protrusions. Importantly, alveolar and small airway langerin+ DCs in COPD lungs displayed site-specific marker profiles. Further, multiplex immunohistochemistry with single-cell quantification was used to specifically profile langerin DCs and reveal site-specific expression patterns of the maturation and activation markers S100, fascin, MHC2, and B7. Taken together, our results show that clinically advanced COPD is associated with increased levels of multiple alveolar DC populations exhibiting features of both adaptive and innate immunity phenotypes. This expansion is likely to contribute to the distal lung immunopathology in COPD patients.
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Affiliation(s)
- Michiko Mori
- Department of Experimental Medical Sciences, Lund University, Lund, Sweden
| | | | | | | | | | | | - Medya Shikhagaie
- Department of Experimental Medical Sciences, Lund University, Lund, Sweden
| | - Karolina Åkesson
- Department of Experimental Medical Sciences, Lund University, Lund, Sweden
| | - Anders Bergqvist
- Department of Respiratory Medicine and Allergology, Skåne University Hospital, Lund University, Lund, Sweden
| | - Claes-Göran Löfdahl
- Department of Respiratory Medicine and Allergology, Skåne University Hospital, Lund University, Lund, Sweden
| | - Jonas S. Erjefält
- Department of Experimental Medical Sciences, Lund University, Lund, Sweden
- Department of Respiratory Medicine and Allergology, Skåne University Hospital, Lund University, Lund, Sweden
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Baranov MV, Revelo NH, Verboogen DRJ, Ter Beest M, van den Bogaart G. SWAP70 is a universal GEF-like adaptor for tethering actin to phagosomes. Small GTPases 2018; 10:311-323. [PMID: 28489960 PMCID: PMC6548301 DOI: 10.1080/21541248.2017.1328302] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
We recently identified a key role for SWAP70 as the tethering factor stabilizing F-actin filaments on the surface of phagosomes in human dendritic cells by interacting both with Rho-family GTPases and the lipid phosphatidylinositol (3,4)-bisphosphate. In this study, we aimed to investigate whether this role of SWAP70 was general among immune phagocytes. Our data reveal that SWAP70 is recruited to early phagosomes of macrophages and dendritic cells from both human and mouse. The putative inhibitor of SWAP70 sanguinarine blocked phagocytosis and F-actin polymerization, supporting a key role for SWAP70 in phagocytosis as demonstrated previously with knock-down. Moreover, SWAP70 was recently shown to sequester the F-actin severing protein cofilin and we investigated this relationship in phagocytosis. Our data show an increased activation of cellular cofilin upon siRNA knockdown of SWAP70. Finally, we explored whether SWAP70 would be recruited to the immune synapse between dendritic cells and T cells required for antigen presentation, as the formation of such synapses depends on F-actin. However, we observed that SWAP70 was depleted at immune synapses and specifically was recruited to phagosomes. Our data support an essential and specific role for SWAP70 in tethering and stabilizing F-actin to the phagosomal surface in a wide range of phagocytes.
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Affiliation(s)
- Maksim V Baranov
- a Department of Tumor Immunology , Radboud University Medical Center, Radboud Institute for Molecular Life Sciences , Nijmegen , The Netherlands
| | - Natalia H Revelo
- a Department of Tumor Immunology , Radboud University Medical Center, Radboud Institute for Molecular Life Sciences , Nijmegen , The Netherlands
| | - Daniëlle R J Verboogen
- a Department of Tumor Immunology , Radboud University Medical Center, Radboud Institute for Molecular Life Sciences , Nijmegen , The Netherlands
| | - Martin Ter Beest
- a Department of Tumor Immunology , Radboud University Medical Center, Radboud Institute for Molecular Life Sciences , Nijmegen , The Netherlands
| | - Geert van den Bogaart
- a Department of Tumor Immunology , Radboud University Medical Center, Radboud Institute for Molecular Life Sciences , Nijmegen , The Netherlands
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Baranov MV, Revelo NH, Dingjan I, Maraspini R, Ter Beest M, Honigmann A, van den Bogaart G. SWAP70 Organizes the Actin Cytoskeleton and Is Essential for Phagocytosis. Cell Rep 2017; 17:1518-1531. [PMID: 27806292 PMCID: PMC5149533 DOI: 10.1016/j.celrep.2016.10.021] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 09/05/2016] [Accepted: 10/06/2016] [Indexed: 10/25/2022] Open
Abstract
Actin plays a critical role during the early stages of pathogenic microbe internalization by immune cells. In this study, we identified a key mechanism of actin filament tethering and stabilization to the surface of phagosomes in human dendritic cells. We found that the actin-binding protein SWAP70 is specifically recruited to nascent phagosomes by binding to the lipid phosphatidylinositol (3,4)-bisphosphate. Multi-color super-resolution stimulated emission depletion (STED) microscopy revealed that the actin cage surrounding early phagosomes is formed by multiple concentric rings containing SWAP70. SWAP70 colocalized with and stimulated activation of RAC1, a known activator of actin polymerization, on phagosomes. Genetic ablation of SWAP70 impaired actin polymerization around phagosomes and resulted in a phagocytic defect. These data show a key role for SWAP70 as a scaffold for tethering the peripheral actin cage to phagosomes.
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Affiliation(s)
- Maksim V Baranov
- Department of Tumor Immunology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Geert Grooteplein 28, 6525GA Nijmegen, the Netherlands
| | - Natalia H Revelo
- Department of Tumor Immunology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Geert Grooteplein 28, 6525GA Nijmegen, the Netherlands
| | - Ilse Dingjan
- Department of Tumor Immunology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Geert Grooteplein 28, 6525GA Nijmegen, the Netherlands
| | - Riccardo Maraspini
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstrasse 108, 01307 Dresden, Germany
| | - Martin Ter Beest
- Department of Tumor Immunology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Geert Grooteplein 28, 6525GA Nijmegen, the Netherlands
| | - Alf Honigmann
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstrasse 108, 01307 Dresden, Germany
| | - Geert van den Bogaart
- Department of Tumor Immunology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Geert Grooteplein 28, 6525GA Nijmegen, the Netherlands.
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Roscher A, Hasegawa T, Dohnke S, Ocaña-Morgner C, Amizuka N, Jessberger R, Garbe AI. The F-actin modulator SWAP-70 controls podosome patterning in osteoclasts. Bone Rep 2016; 5:214-221. [PMID: 28580389 PMCID: PMC5440945 DOI: 10.1016/j.bonr.2016.07.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 07/15/2016] [Indexed: 01/14/2023] Open
Abstract
Osteoclasts are bone resorbing cells acting as key mediators of bone disorders. Upon adhesion to bone, osteoclasts polarize and reorganize their cytoskeleton to generate a ring-like F-actin-rich structure, the sealing zone, wherein the osteoclast's resorptive organelle, the ruffled border, is formed. The dynamic self-organization of actin-rich adhesive structures, the podosomes, from clusters to belts is crucial for osteoclast-mediated bone degradation. Mice lacking the protein SWAP-70 display an osteopetrotic phenotype due to defective bone resorption caused by impaired actin ring formation in Swap-70−/− osteoclasts. To further elucidate the mechanisms underlying this defect, we investigated the specific function of SWAP-70 in the organization and dynamics of podosomes. These detailed studies show that the transition from podosome clusters to rings is impaired in Swap-70−/− osteoclasts. Live cell imaging of dynamic F-actin turnover and SWAP-70 localization during podosome patterning indicate that SWAP-70 is dispensable for cluster formation but plays a key role in F-actin ring generation. Our data provide insights in the role of SWAP-70's F-actin binding domain and pleckstrin homology (PH) domain in the proper localization of SWAP-70 and formation of a peripheral podosome belt, respectively. Ex vivo bone analyses revealed that SWAP-70-deficient osteoclasts exhibit defective ruffled border formation and V-ATPase expression. Our findings suggest an important role of membrane binding of SWAP-70 for the regulation of actin dynamics, which is essential for podosome patterning, and thus for the resorptive activity of osteoclasts. SWAP-70 controls dynamic podosome patterning but not assembly of podosomes. PIP3 and F-actin binding are required for proper subcellular localization of SWAP-70. SWAP-70-deficient osteoclasts are impaired in ruffled border formation.
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Affiliation(s)
- Anne Roscher
- Institute of Physiological Chemistry, Technische Universität Dresden, Germany
| | - Tomoka Hasegawa
- Department of Developmental Biology of Hard Tissue, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Sebastian Dohnke
- Osterimmunology, DFG-Center for Regenerative Therapies, Technische Universität Dresden, Germany
| | | | - Norio Amizuka
- Department of Developmental Biology of Hard Tissue, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Rolf Jessberger
- Institute of Physiological Chemistry, Technische Universität Dresden, Germany
- Correspondence to: R. Jessberger, Institute of Physiological Chemistry, Technische Universität Dresden, Fiedlerstrasse 42, 01307 Dresden, Germany.R. Jessberger, Institute of Physiological ChemistryTechnische Universität DresdenFiedlerstrasse 42Dresden01307Germany
| | - Annette I. Garbe
- Institute of Physiological Chemistry, Technische Universität Dresden, Germany
- Osterimmunology, DFG-Center for Regenerative Therapies, Technische Universität Dresden, Germany
- Correspondence to: A.I. Garbe, Osteoimmunology, DFG-Center for Regenerative Therapies, Technische Universität Dresden, Fetscherstraße 105, 01307 Dresden, Germany.A.I. Garbe, OsteoimmunologyDFG-Center for Regenerative TherapiesTechnische Universität DresdenFetscherstraße 105Dresden01307Germany
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Manni M, Gupta S, Nixon BG, Weaver CT, Jessberger R, Pernis AB. IRF4-Dependent and IRF4-Independent Pathways Contribute to DC Dysfunction in Lupus. PLoS One 2015; 10:e0141927. [PMID: 26544714 PMCID: PMC4636285 DOI: 10.1371/journal.pone.0141927] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 10/14/2015] [Indexed: 01/01/2023] Open
Abstract
Interferon Regulatory Factors (IRFs) play fundamental roles in dendritic cell (DC) differentiation and function. In particular, IRFs are critical transducers of TLR signaling and dysregulation in this family of factors is associated with the development of autoimmune disorders such as Systemic Lupus Erythematosus (SLE). While several IRFs are expressed in DCs their relative contribution to the aberrant phenotypic and functional characteristics that DCs acquire in autoimmune disease has not been fully delineated. Mice deficient in both DEF6 and SWAP-70 (= Double-knock-out or DKO mice), two members of a unique family of molecules that restrain IRF4 function, spontaneously develop a lupus-like disease. Although autoimmunity in DKO mice is accompanied by dysregulated IRF4 activity in both T and B cells, SWAP-70 is also known to regulate multiple aspects of DC biology leading us to directly evaluate DC development and function in these mice. By monitoring Blimp1 expression and IL-10 competency in DKO mice we demonstrate that DCs in these mice exhibit dysregulated IL-10 production, which is accompanied by aberrant Blimp1 expression in the spleen but not in the peripheral lymph nodes. We furthermore show that DCs from these mice are hyper-responsive to multiple TLR ligands and that IRF4 plays a differential role in in these responses by being required for the TLR4-mediated but not the TLR9-mediated upregulation of IL-10 expression. Thus, DC dysfunction in lupus-prone mice relies on both IRF4-dependent and IRF4-independent pathways.
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Affiliation(s)
- Michela Manni
- Autoimmunity and Inflammation Program, Hospital for Special Surgery, New York, New York, United States of America
| | - Sanjay Gupta
- Autoimmunity and Inflammation Program, Hospital for Special Surgery, New York, New York, United States of America
| | - Briana G. Nixon
- Graduate Program in Immunology and Microbial Pathogenesis, Weill Cornell Graduate School of Medical Sciences, New York, New York, United States of America
| | - Casey T. Weaver
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Rolf Jessberger
- Institute of Physiological Chemistry, Technische Universität Dresden, Dresden, Germany
| | - Alessandra B. Pernis
- Autoimmunity and Inflammation Program, Hospital for Special Surgery, New York, New York, United States of America
- Graduate Program in Immunology and Microbial Pathogenesis, Weill Cornell Graduate School of Medical Sciences, New York, New York, United States of America
- Department of Medicine, Weill Cornell Medical College, Cornell University, New York, New York, United States of America
- * E-mail:
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Susceptibility to tuberculosis is associated with variants in the ASAP1 gene encoding a regulator of dendritic cell migration. Nat Genet 2015; 47:523-527. [PMID: 25774636 PMCID: PMC4414475 DOI: 10.1038/ng.3248] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Accepted: 02/18/2015] [Indexed: 12/13/2022]
Abstract
Human genetic factors predispose to tuberculosis (TB). We studied 7.6 million genetic variants in 5,530 pulmonary TB patients and 5,607 healthy controls. In the combined analysis of these subjects and the follow-up cohort (15,087 TB patients and controls altogether), we found association between TB and variants located in introns of the ASAP1 gene on chromosome 8q24 (P = 2.6 × 10−11 for rs4733781; P = 1.0 × 10−10 for rs10956514). Dendritic cells (DCs) showed high level of ASAP1 expression, which was reduced after M. tuberculosis infection, and rs10956514 was associated with the level of reduction of ASAP1 expression. The ASAP1 protein is involved in actin and membrane remodeling and has been associated with podosomes. The ASAP1-depleted DCs showed impaired matrix degradation and migration. Therefore, genetically determined excessive reduction of ASAP1 expression in M. tuberculosis-infected DCs may lead to their impaired migration, suggesting a potential novel mechanism that predisposes to TB.
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Jiang H, Wang Y, Viniegra A, Sima C, McCulloch CA, Glogauer M. Adseverin plays a role in osteoclast differentiation and periodontal disease-mediated bone loss. FASEB J 2015; 29:2281-91. [PMID: 25681458 DOI: 10.1096/fj.14-265744] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 01/23/2015] [Indexed: 01/27/2023]
Abstract
Osteoclast differentiation and function are highly dependent on the assembly and turnover of actin filaments, but little is known about the roles of actin binding proteins in these processes. Adseverin (Ads), a member of the gelsolin superfamily of actin capping and severing proteins, regulates actin filament turnover and can regulate the turnover of cortical actin filaments of chromaffin cells during exocytosis. Using a conditional Ads knockout mouse model, we confirmed our previous finding in cultured cells that Ads plays a role in osteoclastogenesis (OCG) and actin cytoskeletal organization in osteoclasts. Here we show that Ads is required for osteoclast formation and that when alveolar bone resorption is experimentally induced in mice, genetic deletion of Ads prevents osteoclast-mediated bone loss. Further, when Ads-null osteoclasts are cultured, they exhibit defective OCG, disorganized podosome-based actin filament superstructures, and decreased bone resorption. Reintroduction of Ads into Ads-null osteoclast precursor cells restored these osteoclast defects. Collectively, these data demonstrate a unique and osteoclast-specific role for Ads in OCG and osteoclast function.
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Affiliation(s)
- Hongwei Jiang
- *Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Ontario, Canada; and Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Sun Yat-sen University, and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Yongqiang Wang
- *Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Ontario, Canada; and Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Sun Yat-sen University, and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Ana Viniegra
- *Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Ontario, Canada; and Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Sun Yat-sen University, and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Corneliu Sima
- *Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Ontario, Canada; and Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Sun Yat-sen University, and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Christopher A McCulloch
- *Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Ontario, Canada; and Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Sun Yat-sen University, and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Michael Glogauer
- *Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Ontario, Canada; and Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Sun Yat-sen University, and Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
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