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Yokoyama Y, Kameo Y, Sunaga J, Maki K, Adachi T. Chondrocyte hypertrophy in the growth plate promotes stress anisotropy affecting long bone development through chondrocyte column formation. Bone 2024; 182:117055. [PMID: 38412894 DOI: 10.1016/j.bone.2024.117055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 02/08/2024] [Accepted: 02/19/2024] [Indexed: 02/29/2024]
Abstract
The length of long bones is determined by column formation of proliferative chondrocytes and subsequent chondrocyte hypertrophy in the growth plate during bone development. Despite the importance of mechanical loading in long bone development, the mechanical conditions of the cells within the growth plate, such as the stress field, remain unclear owing to the difficulty in investigating spatiotemporal changes within dynamically growing tissues. In this study, the mechanisms of longitudinal bone growth were investigated from a mechanical perspective through column formation of proliferative chondrocytes within the growth plate before secondary ossification center formation using continuum-based particle models (CbPMs). A one-factor model, which simply describes essential aspects of a biological signaling cascade regulating cell activities within the growth plate, was developed and incorporated into CbPM. Subsequently, the developmental process and maintenance of the growth plate structure and resulting bone morphogenesis were simulated. Thus, stress anisotropy in the proliferative zone that affects bone elongation through chondrocyte column formation was identified and found to be promoted by chondrocyte hypertrophy. These results provide further insights into the mechanical regulation of multicellular dynamics during bone development.
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Affiliation(s)
- Yuka Yokoyama
- Department of Micro Engineering, Graduate School of Engineering, Kyoto University, 53 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan; Department of Biosystems Science, Institute for Life and Medical Sciences, Kyoto University, 53 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yoshitaka Kameo
- Department of Biosystems Science, Institute for Life and Medical Sciences, Kyoto University, 53 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan; Department of Engineering Science and Mechanics, College of Engineering, Shibaura Institute of Technology, 3-7-5 Toyosu Koto-ku, Tokyo, 135-8548, Japan
| | - Junko Sunaga
- Department of Biosystems Science, Institute for Life and Medical Sciences, Kyoto University, 53 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Koichiro Maki
- Department of Micro Engineering, Graduate School of Engineering, Kyoto University, 53 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan; Department of Biosystems Science, Institute for Life and Medical Sciences, Kyoto University, 53 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan; Department of Mammalian Regulatory Network, Graduate School of Biostudies, Kyoto University, 53 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan; Department of Medicine and Medical Science, Graduate School of Medicine, Kyoto University, 53 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Taiji Adachi
- Department of Micro Engineering, Graduate School of Engineering, Kyoto University, 53 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan; Department of Biosystems Science, Institute for Life and Medical Sciences, Kyoto University, 53 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan; Department of Mammalian Regulatory Network, Graduate School of Biostudies, Kyoto University, 53 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan; Department of Medicine and Medical Science, Graduate School of Medicine, Kyoto University, 53 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan.
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2
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Rashid H, Smith CM, Convers V, Clark K, Javed A. Runx2 deletion in hypertrophic chondrocytes impairs osteoclast mediated bone resorption. Bone 2024; 181:117014. [PMID: 38218304 PMCID: PMC10922707 DOI: 10.1016/j.bone.2024.117014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/27/2023] [Accepted: 01/05/2024] [Indexed: 01/15/2024]
Abstract
Deletion of Runx2 gene in proliferating chondrocytes results in complete failure of endochondral ossification and perinatal lethality. We reported recently that mice with Runx2 deletion specifically in hypertrophic chondrocytes (HCs) using the Col10a1-Cre transgene survive and exhibit enlarged growth plates due to decreased HC apoptosis and cartilage resorption. Bulk of chondrogenesis occurs postnatally, however, the role of Runx2 in HCs during postnatal chondrogenesis is unknown. Despite limb dwarfism, adult homozygous (Runx2HC/HC) mice showed a significant increase in length of growth plate and articular cartilage. Consistent with doubling of the hypertrophic zone, collagen type X expression was increased in Runx2HC/HC mice. In sharp contrast, expression of metalloproteinases and aggrecanases were markedly decreased. Impaired cartilage degradation was evident by the retention of significant amount of safranin-O positive cartilage. Histomorphometry and μCT uncovered increased trabecular bone mass with a significant increase in BV/TV ratio, trabecular number, thickness, and a decrease in trabecular space in Runx2HC/HC mice. To identify if this is due to increased bone synthesis, expression of osteoblast differentiation markers was evaluated and found to be comparable amongst littermates. Histomorphometry confirmed similar number of osteoblasts in the littermates. Furthermore, dynamic bone synthesis showed no differences in mineral apposition or bone formation rates. Surprisingly, three-point-bending test revealed Runx2HC/HC bones to be structurally less strong. Interestingly, both the number and surface of osteoclasts were markedly reduced in Runx2HC/HC littermates. Rankl and IL-17a ligands that promote osteoclast differentiation were markedly reduced in Runx2HC/HC mice. Bone marrow cultures were performed to independently establish Runx2 and hypertrophic chondrocytes role in osteoclast development. The culture from the Runx2HC/HC mice formed significantly fewer and smaller osteoclasts. The expression of mature osteoclast markers, Ctsk and Mmp9, were significantly reduced in the cultures from Runx2HC/HC mice. Thus, Runx2 functions extend beyond embryonic development and chondrocyte hypertrophy by regulating cartilage degradation, osteoclast differentiation, and bone resorption during postnatal endochondral ossification.
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Affiliation(s)
- Harunur Rashid
- Department of Oral and Maxillofacial Surgery, Institute of Oral Health Research, School of Dentistry, University of Alabama at Birmingham, Birmingham 35233, AL, USA
| | - Caris M Smith
- Department of Oral and Maxillofacial Surgery, Institute of Oral Health Research, School of Dentistry, University of Alabama at Birmingham, Birmingham 35233, AL, USA
| | - Vashti Convers
- Department of Oral and Maxillofacial Surgery, Institute of Oral Health Research, School of Dentistry, University of Alabama at Birmingham, Birmingham 35233, AL, USA
| | - Katelynn Clark
- Department of Oral and Maxillofacial Surgery, Institute of Oral Health Research, School of Dentistry, University of Alabama at Birmingham, Birmingham 35233, AL, USA
| | - Amjad Javed
- Department of Oral and Maxillofacial Surgery, Institute of Oral Health Research, School of Dentistry, University of Alabama at Birmingham, Birmingham 35233, AL, USA.
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3
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Quadri N, Upadhyai P. Primary cilia in skeletal development and disease. Exp Cell Res 2023; 431:113751. [PMID: 37574037 DOI: 10.1016/j.yexcr.2023.113751] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/09/2023] [Accepted: 08/11/2023] [Indexed: 08/15/2023]
Abstract
Primary cilia are non-motile, microtubule-based sensory organelle present in most vertebrate cells with a fundamental role in the modulation of organismal development, morphogenesis, and repair. Here we focus on the role of primary cilia in embryonic and postnatal skeletal development. We examine evidence supporting its involvement in physiochemical and developmental signaling that regulates proliferation, patterning, differentiation and homeostasis of osteoblasts, chondrocytes, and their progenitor cells in the skeleton. We discuss how signaling effectors in mechanotransduction and bone development, such as Hedgehog, Wnt, Fibroblast growth factor and second messenger pathways operate at least in part at the primary cilium. The relevance of primary cilia in bone formation and maintenance is underscored by a growing list of rare genetic skeletal ciliopathies. We collate these findings and summarize the current understanding of molecular factors and mechanisms governing primary ciliogenesis and ciliary function in skeletal development and disease.
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Affiliation(s)
- Neha Quadri
- Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Priyanka Upadhyai
- Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India.
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4
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Wu H, Wang P, Liu Z, Lu C, Yin W. Systematic Analysis of Smooth Muscle and Cartilage Ring Formation during Mouse Tracheal Tubulogenesis. Bio Protoc 2023; 13:e4711. [PMID: 37449041 PMCID: PMC10336568 DOI: 10.21769/bioprotoc.4711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 07/04/2022] [Accepted: 04/24/2023] [Indexed: 07/18/2023] Open
Abstract
The trachea tube is the exclusive route to allow gas exchange between the external environment and the lungs. Recent studies have shown the critical role of mesenchymal cells in tracheal tubulogenesis. Improved methods for studying the dynamics of the tracheal mesenchyme development are needed to investigate the cellular and molecular mechanisms during tracheal tubulogenesis. Here, we describe a detailed protocol for a systematic analysis of tracheal tube development to enable observing tracheal smooth muscle (SM) and cartilage ring formation. We describe immunostaining, confocal and stereomicroscopy imaging, and quantitative methods to study the process of tracheal SM and cartilage ring development, including SM cell alignment, polarization, and changes in cell shape as well as mesenchymal condensation. The technologies and approaches described here not only improve analysis of the patterning of the developing trachea but also help uncover the mechanisms underlying airway disease. This protocol also provides a useful technique to analyze cell organization, polarity, and nuclear shape in other organ systems.
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Affiliation(s)
- Haoyu Wu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, GMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou Medical University, Guangzhou, Guangdong, China
- Guangzhou National Laboratory, No. 9 XingDaoHuanBei Road, Guangzhou International Bio Island, Guangzhou, Guangdong Province, China
| | - Ping Wang
- Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong, China
| | - Ziying Liu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, GMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Chunyan Lu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, GMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Wenguang Yin
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, GMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou Medical University, Guangzhou, Guangdong, China
- Guangzhou National Laboratory, No. 9 XingDaoHuanBei Road, Guangzhou International Bio Island, Guangzhou, Guangdong Province, China
- GMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou, Guangdong, China
- Key Laboratory of Biological Targeting Diagnosis, Therapy and Rehabilitation of Guangdong Higher Education Institutes, the Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
- Max Planck Institute for Heart and Lung Research, Department of Developmental Genetics, Bad Nauheim, Germany
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5
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Caetano da Silva C, Ostertag A, Raman R, Muller M, Cohen-Solal M, Collet C. wnt11f2 Zebrafish, an Animal Model for Development and New Insights in Bone Formation. Zebrafish 2023; 20:1-9. [PMID: 36795617 PMCID: PMC9968865 DOI: 10.1089/zeb.2022.0042] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
Wnt signaling is a key regulator of osteoblast differentiation and mineralization in humans and animals, mediated by the canonical Wnt/β-catenin and noncanonical signaling pathways. Both pathways are crucial in regulating osteoblastogenesis and bone formation. The zebrafish silberblick (slb) carries a mutation in wnt11f2, a gene that contributes to embryonic morphogenesis; however, its role in bone morphology is unknown. wnt11f2 was originally known as wnt11; it was recently reclassified to avoid confusion in comparative genetics and disease modeling. The goal of this review is to summarize the characterization of the wnt11f2 zebrafish mutant and to deliver some new insights concerning its role in skeletal development. In addition to the previously described defects in early development in this mutant as well as craniofacial dysmorphia, we show an increase in tissue mineral density in the heterozygous mutant that points to a possible role of wnt11f2 in high bone mass phenotypes.
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Affiliation(s)
- Caroline Caetano da Silva
- INSERM U1132 and Université Paris-Cité, Reference Centre for Rare Bone Diseases, Hospital Lariboisière, Paris, France
| | - Agnes Ostertag
- INSERM U1132 and Université Paris-Cité, Reference Centre for Rare Bone Diseases, Hospital Lariboisière, Paris, France
| | - Ratish Raman
- Laboratory for Organogenesis and Regeneration (LOR), GIGA-Research, Liège University, Liège, Belgium
| | - Marc Muller
- Laboratory for Organogenesis and Regeneration (LOR), GIGA-Research, Liège University, Liège, Belgium
| | - Martine Cohen-Solal
- INSERM U1132 and Université Paris-Cité, Reference Centre for Rare Bone Diseases, Hospital Lariboisière, Paris, France
| | - Corinne Collet
- INSERM U1132 and Université Paris-Cité, Reference Centre for Rare Bone Diseases, Hospital Lariboisière, Paris, France.,UF de Génétique Moléculaire, Hôpital Robert Debré, APHP, Paris, France
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6
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Abstract
Morphogenesis is extremely diverse, but its systematic quantification to determine the physical mechanisms that produce different phenotypes is possible by quantifying the underlying cell behaviours. These are limited and definable: they consist of cell proliferation, orientation of cell division, cell rearrangement, directional matrix production, cell addition/subtraction and cell size/shape change. Although minor variations in these categories are possible, in sum they capture all possible morphogenetic behaviours. This article summarises these processes, discusses their measurement, and highlights some salient examples.
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Affiliation(s)
- Jeremy B. A. Green
- Centre for Craniofacial Regeneration and Biology, King's College London, Guy's Campus, London SE1 9RT, UK
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7
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Parada C, Banavar SP, Khalilian P, Rigaud S, Michaut A, Liu Y, Joshy DM, Campàs O, Gros J. Mechanical feedback defines organizing centers to drive digit emergence. Dev Cell 2022; 57:854-866.e6. [PMID: 35413235 DOI: 10.1016/j.devcel.2022.03.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 01/25/2022] [Accepted: 03/10/2022] [Indexed: 11/03/2022]
Abstract
During embryonic development, digits gradually emerge in a periodic pattern. Although genetic evidence indicates that digit formation results from a self-organizing process, the underlying mechanisms are still unclear. Here, we find that convergent-extension tissue flows driven by active stresses underlie digit formation. These active stresses simultaneously shape cartilage condensations and lead to the emergence of a compressive stress region that promotes high activin/p-SMAD/SOX9 expression, thereby defining digit-organizing centers via a mechanical feedback. In Wnt5a mutants, such mechanical feedback is disrupted due to the loss of active stresses, organizing centers do not emerge, and digit formation is precluded. Thus, digit emergence does not result solely from molecular interactions, as was previously thought, but requires a mechanical feedback that ensures continuous coupling between phalanx specification and elongation. Our work, which links mechanical and molecular signals, provides a mechanistic context for the emergence of organizing centers that may underlie various developmental processes.
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Affiliation(s)
- Carolina Parada
- Department of Developmental and Stem Cell Biology, Institut Pasteur, 75724 Paris Cedex 15, France; CNRS UMR 3738, 25 rue du Dr Roux, 75015 Paris, France
| | - Samhita P Banavar
- Department of Physics, University of California, Santa Barbara, CA 93106-5070, USA
| | - Parisa Khalilian
- Department of Developmental and Stem Cell Biology, Institut Pasteur, 75724 Paris Cedex 15, France; CNRS UMR 3738, 25 rue du Dr Roux, 75015 Paris, France
| | - Stephane Rigaud
- Image Analysis Hub, C2RT, Institut Pasteur, 75724 Paris Cedex 15, France
| | - Arthur Michaut
- Department of Developmental and Stem Cell Biology, Institut Pasteur, 75724 Paris Cedex 15, France; CNRS UMR 3738, 25 rue du Dr Roux, 75015 Paris, France
| | - Yucen Liu
- Department of Mechanical Engineering, University of California, Santa Barbara, CA 93106-5070, USA
| | - Dennis Manjaly Joshy
- Department of Mechanical Engineering, University of California, Santa Barbara, CA 93106-5070, USA
| | - Otger Campàs
- Department of Mechanical Engineering, University of California, Santa Barbara, CA 93106-5070, USA; Department of Molecular, Cell and Developmental Biology, University of California, Santa Barbara, CA, USA; Cluster of Excellence Physics of Life, TU Dresden, 01062 Dresden, Germany.
| | - Jerome Gros
- Department of Developmental and Stem Cell Biology, Institut Pasteur, 75724 Paris Cedex 15, France; CNRS UMR 3738, 25 rue du Dr Roux, 75015 Paris, France.
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8
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Le Pabic P, Dranow DB, Hoyle DJ, Schilling TF. Zebrafish endochondral growth zones as they relate to human bone size, shape and disease. Front Endocrinol (Lausanne) 2022; 13:1060187. [PMID: 36561564 PMCID: PMC9763315 DOI: 10.3389/fendo.2022.1060187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 11/17/2022] [Indexed: 12/12/2022] Open
Abstract
Research on the genetic mechanisms underlying human skeletal development and disease have largely relied on studies in mice. However, recently the zebrafish has emerged as a popular model for skeletal research. Despite anatomical differences such as a lack of long bones in their limbs and no hematopoietic bone marrow, both the cell types in cartilage and bone as well as the genetic pathways that regulate their development are remarkably conserved between teleost fish and humans. Here we review recent studies that highlight this conservation, focusing specifically on the cartilaginous growth zones (GZs) of endochondral bones. GZs can be unidirectional such as the growth plates (GPs) of long bones in tetrapod limbs or bidirectional, such as in the synchondroses of the mammalian skull base. In addition to endochondral growth, GZs play key roles in cartilage maturation and replacement by bone. Recent studies in zebrafish suggest key roles for cartilage polarity in GZ function, surprisingly early establishment of signaling systems that regulate cartilage during embryonic development, and important roles for cartilage proliferation rather than hypertrophy in bone size. Despite anatomical differences, there are now many zebrafish models for human skeletal disorders including mutations in genes that cause defects in cartilage associated with endochondral GZs. These point to conserved developmental mechanisms, some of which operate both in cranial GZs and limb GPs, as well as others that act earlier or in parallel to known GP regulators. Experimental advantages of zebrafish for genetic screens, high resolution live imaging and drug screens, set the stage for many novel insights into causes and potential therapies for human endochondral bone diseases.
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Affiliation(s)
- Pierre Le Pabic
- Department of Biology and Marine Biology, University of North Carolina Wilmington, Willmington, NC, United States
- *Correspondence: Pierre Le Pabic, ; Thomas F. Schilling,
| | - Daniel B. Dranow
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA, United States
| | - Diego J. Hoyle
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA, United States
| | - Thomas F. Schilling
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA, United States
- *Correspondence: Pierre Le Pabic, ; Thomas F. Schilling,
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9
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Perkins RS, Suthon S, Miranda-Carboni GA, Krum SA. WNT5B in cellular signaling pathways. Semin Cell Dev Biol 2021; 125:11-16. [PMID: 34635443 DOI: 10.1016/j.semcdb.2021.09.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/29/2021] [Accepted: 09/30/2021] [Indexed: 12/31/2022]
Abstract
The Wnt signaling ligand WNT5B is implicated in various developmental pathways, both in normal and pathological physiology. Most of the research on WNT5B has been associated with expression analysis and disease states, leaving the signaling pathways underexplored. Here, we review the current understandings of WNT5B's regulation of signal transduction, from receptors to downstream mediators and transcription factors. We also describe its roles in β-catenin-dependent and β-catenin-independent (Planar Cell Polarity and Wnt/Ca2+) Wnt signaling.
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Affiliation(s)
- Rachel S Perkins
- Department of Orthopaedic Surgery and Biomedical Engineering, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Sarocha Suthon
- Department of Orthopaedic Surgery and Biomedical Engineering, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Gustavo A Miranda-Carboni
- Department of Medicine, Division of Hematology and Oncology, University of Tennessee Health Science Center, Memphis, TN, USA; Center for Cancer Research, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Susan A Krum
- Department of Orthopaedic Surgery and Biomedical Engineering, University of Tennessee Health Science Center, Memphis, TN, USA; Center for Cancer Research, University of Tennessee Health Science Center, Memphis, TN, USA.
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10
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Lojk J, Marc J. Roles of Non-Canonical Wnt Signalling Pathways in Bone Biology. Int J Mol Sci 2021; 22:10840. [PMID: 34639180 PMCID: PMC8509327 DOI: 10.3390/ijms221910840] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/01/2021] [Accepted: 10/05/2021] [Indexed: 01/15/2023] Open
Abstract
The Wnt signalling pathway is one of the central signalling pathways in bone development, homeostasis and regulation of bone mineral density. It consists of numerous Wnt ligands, receptors and co-receptors, which ensure tight spatiotemporal regulation of Wnt signalling pathway activity and thus tight regulation of bone tissue homeostasis. This enables maintenance of optimal mineral density, tissue healing and adaptation to changes in bone loading. While the role of the canonical/β-catenin Wnt signalling pathway in bone homeostasis is relatively well researched, Wnt ligands can also activate several non-canonical, β-catenin independent signalling pathways with important effects on bone tissue. In this review, we will provide a thorough overview of the current knowledge on different non-canonical Wnt signalling pathways involved in bone biology, focusing especially on the pathways that affect bone cell differentiation, maturation and function, processes involved in bone tissue structure regulation. We will describe the role of the two most known non-canonical pathways (Wnt/planar cell polarity pathways and Wnt/Ca2+ pathway), as well as other signalling pathways with a strong role in bone biology that communicate with the Wnt signalling pathway through non-canonical Wnt signalling. Our goal is to bring additional attention to these still not well researched but important pathways in the regulation of bone biology in the hope of prompting additional research in the area of non-canonical Wnt signalling pathways.
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Affiliation(s)
- Jasna Lojk
- Department of Clinical Biochemistry, Faculty of Pharmacy, University of Ljubljana, 1000 Ljubljana, Slovenia;
| | - Janja Marc
- Department of Clinical Biochemistry, Faculty of Pharmacy, University of Ljubljana, 1000 Ljubljana, Slovenia;
- University Clinical Center Ljubljana, Clinical Department of Clinical Chemistry and Biochemistry, 1000 Ljubljana, Slovenia
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11
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Abraham SP, Nita A, Krejci P, Bosakova M. Cilia kinases in skeletal development and homeostasis. Dev Dyn 2021; 251:577-608. [PMID: 34582081 DOI: 10.1002/dvdy.426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 09/22/2021] [Accepted: 09/22/2021] [Indexed: 11/08/2022] Open
Abstract
Primary cilia are dynamic compartments that regulate multiple aspects of cellular signaling. The production, maintenance, and function of cilia involve more than 1000 genes in mammals, and their mutations disrupt the ciliary signaling which manifests in a plethora of pathological conditions-the ciliopathies. Skeletal ciliopathies are genetic disorders affecting the development and homeostasis of the skeleton, and encompass a broad spectrum of pathologies ranging from isolated polydactyly to lethal syndromic dysplasias. The recent advances in forward genetics allowed for the identification of novel regulators of skeletogenesis, and revealed a growing list of ciliary proteins that are critical for signaling pathways implicated in bone physiology. Among these, a group of protein kinases involved in cilia assembly, maintenance, signaling, and disassembly has emerged. In this review, we summarize the functions of cilia kinases in skeletal development and disease, and discuss the available and upcoming treatment options.
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Affiliation(s)
- Sara P Abraham
- Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Alexandru Nita
- Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Pavel Krejci
- Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.,Institute of Animal Physiology and Genetics of the CAS, Brno, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic
| | - Michaela Bosakova
- Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.,Institute of Animal Physiology and Genetics of the CAS, Brno, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic
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12
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Rubin S, Agrawal A, Stegmaier J, Krief S, Felsenthal N, Svorai J, Addadi Y, Villoutreix P, Stern T, Zelzer E. Application of 3D MAPs pipeline identifies the morphological sequence chondrocytes undergo and the regulatory role of GDF5 in this process. Nat Commun 2021; 12:5363. [PMID: 34508093 PMCID: PMC8433335 DOI: 10.1038/s41467-021-25714-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 08/19/2021] [Indexed: 02/08/2023] Open
Abstract
The activity of epiphyseal growth plates, which drives long bone elongation, depends on extensive changes in chondrocyte size and shape during differentiation. Here, we develop a pipeline called 3D Morphometric Analysis for Phenotypic significance (3D MAPs), which combines light-sheet microscopy, segmentation algorithms and 3D morphometric analysis to characterize morphogenetic cellular behaviors while maintaining the spatial context of the growth plate. Using 3D MAPs, we create a 3D image database of hundreds of thousands of chondrocytes. Analysis reveals broad repertoire of morphological changes, growth strategies and cell organizations during differentiation. Moreover, identifying a reduction in Smad 1/5/9 activity together with multiple abnormalities in cell growth, shape and organization provides an explanation for the shortening of Gdf5 KO tibias. Overall, our findings provide insight into the morphological sequence that chondrocytes undergo during differentiation and highlight the ability of 3D MAPs to uncover cellular mechanisms that may regulate this process.
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Affiliation(s)
- Sarah Rubin
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Ankit Agrawal
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Johannes Stegmaier
- Institute of Imaging and Computer Vision, RWTH Aachen University, Aachen, Germany
- Institute for Automation and Applied Informatics, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Sharon Krief
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Neta Felsenthal
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Jonathan Svorai
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Yoseph Addadi
- Department of Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Paul Villoutreix
- LIS (UMR 7020), IBDM (UMR 7288), Turing Center For Living Systems, Aix-Marseille University, Marseille, France.
| | - Tomer Stern
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel.
| | - Elazar Zelzer
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel.
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13
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Shea CA, Murphy P. The Primary Cilium on Cells of Developing Skeletal Rudiments; Distribution, Characteristics and Response to Mechanical Stimulation. Front Cell Dev Biol 2021; 9:725018. [PMID: 34490272 PMCID: PMC8418538 DOI: 10.3389/fcell.2021.725018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 07/27/2021] [Indexed: 12/22/2022] Open
Abstract
Embryo movement is important for tissue differentiation and the formation of functional skeletal elements during embryonic development: reduced mechanical stimulation results in fused joints and misshapen skeletal rudiments with concomitant changes in the signaling environment and gene expression profiles in both mouse and chick immobile embryos. Despite the clear relationship between movement and skeletogenesis, the precise mechanisms by which mechanical stimuli influence gene regulatory processes are not clear. The primary cilium enables cells to sense mechanical stimuli in the cellular environment, playing a crucial mechanosensory role during kidney development and in articular cartilage and bone but little is known about cilia on developing skeletal tissues. Here, we examine the occurrence, length, position, and orientation of primary cilia across developing skeletal rudiments in mouse embryos during a period of pronounced mechanosensitivity and we report differences and similarities between wildtype and muscle-less mutant (Pax3Spd/Spd) rudiments. Strikingly, joint regions tend to have cilia positioned and oriented away from the joint, while there was a less obvious, but still significant, preferred position on the posterior aspect of cells within the proliferative and hypertrophic zones. Regions of the developing rudiments have characteristic proportions of ciliated cells, with more cilia in the resting and joint zones. Comparing wildtype to muscle-less mutant embryos, cilia are shorter in the mutant with no significant difference in the proportion of ciliated cells. Cilia at the mutant joint were also oriented away from the joint line.
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Affiliation(s)
- Claire A Shea
- Trinity College Dublin, The University of Dublin, Dublin, Ireland
| | - Paula Murphy
- Trinity College Dublin, The University of Dublin, Dublin, Ireland
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14
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Hallett SA, Matsushita Y, Ono W, Sakagami N, Mizuhashi K, Tokavanich N, Nagata M, Zhou A, Hirai T, Kronenberg HM, Ono N. Chondrocytes in the resting zone of the growth plate are maintained in a Wnt-inhibitory environment. eLife 2021; 10:e64513. [PMID: 34309509 PMCID: PMC8313235 DOI: 10.7554/elife.64513] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 07/04/2021] [Indexed: 02/01/2023] Open
Abstract
Chondrocytes in the resting zone of the postnatal growth plate are characterized by slow cell cycle progression, and encompass a population of parathyroid hormone-related protein (PTHrP)-expressing skeletal stem cells that contribute to the formation of columnar chondrocytes. However, how these chondrocytes are maintained in the resting zone remains undefined. We undertook a genetic pulse-chase approach to isolate slow cycling, label-retaining chondrocytes (LRCs) using a chondrocyte-specific doxycycline-controllable Tet-Off system regulating expression of histone 2B-linked GFP. Comparative RNA-seq analysis identified significant enrichment of inhibitors and activators for Wnt signaling in LRCs and non-LRCs, respectively. Activation of Wnt/β-catenin signaling in PTHrP+ resting chondrocytes using Pthlh-creER and Apc-floxed allele impaired their ability to form columnar chondrocytes. Therefore, slow-cycling chondrocytes are maintained in a Wnt-inhibitory environment within the resting zone, unraveling a novel mechanism regulating maintenance and differentiation of PTHrP+ skeletal stem cells of the postnatal growth plate.
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Affiliation(s)
- Shawn A Hallett
- University of Michigan School of DentistryAnn ArborUnited States
| | - Yuki Matsushita
- University of Michigan School of DentistryAnn ArborUnited States
| | - Wanida Ono
- University of Michigan School of DentistryAnn ArborUnited States
- University of Texas Health Science Center at Houston School of DentistryHoustonUnited States
| | - Naoko Sakagami
- University of Michigan School of DentistryAnn ArborUnited States
| | - Koji Mizuhashi
- University of Michigan School of DentistryAnn ArborUnited States
| | - Nicha Tokavanich
- University of Michigan School of DentistryAnn ArborUnited States
| | - Mizuki Nagata
- University of Michigan School of DentistryAnn ArborUnited States
| | - Annabelle Zhou
- University of Michigan School of DentistryAnn ArborUnited States
| | - Takao Hirai
- Ishikawa Prefectural Nursing UniversityIshikawaJapan
| | - Henry M Kronenberg
- Endocrine Unit, Massachusetts General Hospital and Harvard Medical SchoolBostonUnited States
| | - Noriaki Ono
- University of Michigan School of DentistryAnn ArborUnited States
- University of Texas Health Science Center at Houston School of DentistryHoustonUnited States
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15
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Guasto A, Cormier-Daire V. Signaling Pathways in Bone Development and Their Related Skeletal Dysplasia. Int J Mol Sci 2021; 22:4321. [PMID: 33919228 PMCID: PMC8122623 DOI: 10.3390/ijms22094321] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/12/2021] [Accepted: 04/19/2021] [Indexed: 12/19/2022] Open
Abstract
Bone development is a tightly regulated process. Several integrated signaling pathways including HH, PTHrP, WNT, NOTCH, TGF-β, BMP, FGF and the transcription factors SOX9, RUNX2 and OSX are essential for proper skeletal development. Misregulation of these signaling pathways can cause a large spectrum of congenital conditions categorized as skeletal dysplasia. Since the signaling pathways involved in skeletal dysplasia interact at multiple levels and have a different role depending on the time of action (early or late in chondrogenesis and osteoblastogenesis), it is still difficult to precisely explain the physiopathological mechanisms of skeletal disorders. However, in recent years, significant progress has been made in elucidating the mechanisms of these signaling pathways and genotype-phenotype correlations have helped to elucidate their role in skeletogenesis. Here, we review the principal signaling pathways involved in bone development and their associated skeletal dysplasia.
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Affiliation(s)
- Alessandra Guasto
- Imagine Institute, Université de Paris, Clinical Genetics, INSERM UMR 1163, Necker Enfants Malades Hospital, 75015 Paris, France;
| | - Valérie Cormier-Daire
- Imagine Institute, Université de Paris, Clinical Genetics, INSERM UMR 1163, Necker Enfants Malades Hospital, 75015 Paris, France;
- Centre de Référence Pour Les Maladies Osseuses Constitutionnelles, Service de Génétique Clinique, AP-HP, Hôpital Necker-Enfants Malades, 75015 Paris, France
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16
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Clonal analysis and dynamic imaging identify multipotency of individual Gallus gallus caudal hindbrain neural crest cells toward cardiac and enteric fates. Nat Commun 2021; 12:1894. [PMID: 33767165 PMCID: PMC7994390 DOI: 10.1038/s41467-021-22146-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 02/22/2021] [Indexed: 11/20/2022] Open
Abstract
Neural crest stem cells arising from caudal hindbrain (often called cardiac and posterior vagal neural crest) migrate long distances to form cell types as diverse as heart muscle and enteric ganglia, abnormalities of which lead to common congenital birth defects. Here, we explore whether individual caudal hindbrain neural crest precursors are multipotent or predetermined toward these particular fates and destinations. To this end, we perform lineage tracing of chick neural crest cells at single-cell resolution using two complementary approaches: retrovirally mediated multiplex clonal analysis and single-cell photoconversion. Both methods show that the majority of these neural crest precursors are multipotent with many clones producing mesenchymal as well as neuronal derivatives. Time-lapse imaging demonstrates that sister cells can migrate in distinct directions, suggesting stochasticity in choice of migration path. Perturbation experiments further identify guidance cues acting on cells in the pharyngeal junction that can influence this choice; loss of CXCR4 signaling results in failure to migrate to the heart but no influence on migration toward the foregut, whereas loss of RET signaling does the opposite. Taken together, the results suggest that environmental influences rather than intrinsic information govern cell fate choice of multipotent caudal hindbrain neural crest cells. Neural crest stem cells formed from the caudal hindbrain migrate long distances to the heart and gut, but how cell fate is determined is unclear. Here, the authors use multiplex clonal analysis and single-cell photoconversion lineage tracing to show environmental not intrinsic factors affect the cell fate of multipotent caudal hindbrain cells in the chick.
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17
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Galea GL, Zein MR, Allen S, Francis-West P. Making and shaping endochondral and intramembranous bones. Dev Dyn 2020; 250:414-449. [PMID: 33314394 PMCID: PMC7986209 DOI: 10.1002/dvdy.278] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 11/13/2020] [Accepted: 11/20/2020] [Indexed: 12/13/2022] Open
Abstract
Skeletal elements have a diverse range of shapes and sizes specialized to their various roles including protecting internal organs, locomotion, feeding, hearing, and vocalization. The precise positioning, size, and shape of skeletal elements is therefore critical for their function. During embryonic development, bone forms by endochondral or intramembranous ossification and can arise from the paraxial and lateral plate mesoderm or neural crest. This review describes inductive mechanisms to position and pattern bones within the developing embryo, compares and contrasts the intrinsic vs extrinsic mechanisms of endochondral and intramembranous skeletal development, and details known cellular processes that precisely determine skeletal shape and size. Key cellular mechanisms are employed at distinct stages of ossification, many of which occur in response to mechanical cues (eg, joint formation) or preempting future load‐bearing requirements. Rapid shape changes occur during cellular condensation and template establishment. Specialized cellular behaviors, such as chondrocyte hypertrophy in endochondral bone and secondary cartilage on intramembranous bones, also dramatically change template shape. Once ossification is complete, bone shape undergoes functional adaptation through (re)modeling. We also highlight how alterations in these cellular processes contribute to evolutionary change and how differences in the embryonic origin of bones can influence postnatal bone repair. Compares and contrasts Endochondral and intramembranous bone development Reviews embryonic origins of different bones Describes the cellular and molecular mechanisms of positioning skeletal elements. Describes mechanisms of skeletal growth with a focus on the generation of skeletal shape
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Affiliation(s)
- Gabriel L Galea
- Developmental Biology and Cancer, UCL GOS Institute of Child Health, London, UK.,Comparative Bioveterinary Sciences, Royal Veterinary College, London, UK
| | - Mohamed R Zein
- Centre for Craniofacial and Regenerative Biology, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, UK
| | - Steven Allen
- Comparative Bioveterinary Sciences, Royal Veterinary College, London, UK
| | - Philippa Francis-West
- Centre for Craniofacial and Regenerative Biology, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, UK
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18
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Abstract
The ability to identify, isolate, and study pure populations of cells is critical for understanding normal physiology in organs and tissues, which involves spatial regulation of signaling pathways and interactions between cells with different functions, expression profiles, and lineages. Here, we focus on assessing the growth plate cartilage, composed of multiple functionally and histologically distinct zones, to investigate temporally and spatially dependent gene expression differences. In this chapter, we describe the method of laser capture microdissection to isolate chondrocytes from different zones of differentiation in the mouse growth plate cartilage for RNA isolation, and subsequent downstream applications, such as RNA-sequencing and quantitative real-time PCR. We also provide an assessment of different factors contributing to the integrity of the isolated RNA, such as staining methods and procedures in RNA isolation.
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19
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Chu YC, Lim J, Hwang WH, Lin YX, Wang JL. Piezoelectric stimulation by ultrasound facilitates chondrogenesis of mesenchymal stem cells. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2020; 148:EL58. [PMID: 32752766 DOI: 10.1121/10.0001590] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
A cellular stimulation device utilizing an AT-cut quartz coverslip mounted on an ultrasonic live imaging chamber is developed to investigate the effect of piezoelectric stimulation. Two types of chambers deliver ultrasound at intensities ranging from 1 to 20 mW/cm2 to mesenchymal stem cells (MSCs) seeded on the quartz coverslip. The quartz coverslip imposes additionally localized electric charges as it vibrates with the stimulation. The device was applied to explore whether piezoelectric stimulation can facilitate chondrogenesis of MSCs. The results suggest piezoelectric stimulation drove clustering of MSCs and consequently facilitated chondrogenesis of MSCs without the use of differentiation media.
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Affiliation(s)
- Ya-Cherng Chu
- Department of Biomedical Engineering, National Taiwan University, Taipei, , , , ,
| | - Jormay Lim
- Department of Biomedical Engineering, National Taiwan University, Taipei, , , , ,
| | - Wen-Hao Hwang
- Department of Biomedical Engineering, National Taiwan University, Taipei, , , , ,
| | - Yu-Xuan Lin
- Department of Biomedical Engineering, National Taiwan University, Taipei, , , , ,
| | - Jaw-Lin Wang
- Department of Biomedical Engineering, National Taiwan University, Taipei, , , , ,
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20
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Cooper KL. Developmental and Evolutionary Allometry of the Mammalian Limb Skeleton. Integr Comp Biol 2020; 59:1356-1368. [PMID: 31180500 DOI: 10.1093/icb/icz082] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The variety of limb skeletal proportions enables a remarkable diversity of behaviors that include powered flight in bats and flipper-propelled swimming in whales using extremes of a range of homologous limb architectures. Even within human limbs, bone lengths span more than an order of magnitude from the short finger and toe bones to the long arm and leg bones. Yet all of this diversity arises from embryonic skeletal elements that are each a very similar size at formation. In this review article, I survey what is and is not yet known of the development and evolution of skeletal proportion at multiple hierarchical levels of biological organization. These include the cellular parameters of skeletal elongation in the cartilage growth plate, genes associated with differential growth, and putative gene regulatory mechanisms that would allow both covariant and independent evolution of the forelimbs and hindlimbs and of individual limb segments. Although the genetic mechanisms that shape skeletal proportion are still largely unknown, and most of what is known is limited to mammals, it is becoming increasingly apparent that the diversity of bone lengths is an emergent property of a complex system that controls elongation of individual skeletal elements using a genetic toolkit shared by all.
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Affiliation(s)
- Kimberly L Cooper
- Division of Biological Sciences, University of California San Diego, La Jolla, CA 92093-0377, USA
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21
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Chou L, Chen C, Lin Y, Chuang S, Chou H, Lin S, Fu Y, Chang J, Ho M, Wang C. Discoidin domain receptor 1 regulates endochondral ossification through terminal differentiation of chondrocytes. FASEB J 2020; 34:5767-5781. [DOI: 10.1096/fj.201901852rr] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 02/12/2020] [Accepted: 02/18/2020] [Indexed: 01/27/2023]
Affiliation(s)
- Liang‐Yin Chou
- Graduate Institute of Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan
- Orthopaedic Research Centre Kaohsiung Medical University Kaohsiung Taiwan
- Regeneration Medicine and Cell Therapy Research Center Kaohsiung Medical University Kaohsiung Taiwan
| | - Chung‐Hwan Chen
- Orthopaedic Research Centre Kaohsiung Medical University Kaohsiung Taiwan
- Regeneration Medicine and Cell Therapy Research Center Kaohsiung Medical University Kaohsiung Taiwan
- Department of Orthopedics College of Medicine Kaohsiung Medical University Kaohsiung Taiwan
- Department of Orthopedics Kaohsiung Municipal Ta‐Tung Hospital Kaohsiung Medical University Kaohsiung Taiwan
- Institute of Medical Science and Technology National Sun Yat‐Sen University Kaohsiung Taiwan
| | - Yi‐Hsiung Lin
- Department of Biotechnology Kaohsiung Medical University Kaohsiung Taiwan
- Division of Cardiology Department of Internal Medicine Kaohsiung Medical University Hospital Kaohsiung Taiwan
- Lipid Science and Aging Research Center Kaohsiung Medical University Kaohsiung Taiwan
| | - Shu‐Chun Chuang
- Orthopaedic Research Centre Kaohsiung Medical University Kaohsiung Taiwan
- Regeneration Medicine and Cell Therapy Research Center Kaohsiung Medical University Kaohsiung Taiwan
| | - Hsin‐Chiao Chou
- Graduate Institute of Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan
- Orthopaedic Research Centre Kaohsiung Medical University Kaohsiung Taiwan
- Regeneration Medicine and Cell Therapy Research Center Kaohsiung Medical University Kaohsiung Taiwan
| | - Sung‐Yen Lin
- Graduate Institute of Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan
- Orthopaedic Research Centre Kaohsiung Medical University Kaohsiung Taiwan
- Regeneration Medicine and Cell Therapy Research Center Kaohsiung Medical University Kaohsiung Taiwan
- Department of Orthopedics College of Medicine Kaohsiung Medical University Kaohsiung Taiwan
- Department of Orthopedics Kaohsiung Municipal Ta‐Tung Hospital Kaohsiung Medical University Kaohsiung Taiwan
| | - Yin‐Chi Fu
- Graduate Institute of Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan
- Orthopaedic Research Centre Kaohsiung Medical University Kaohsiung Taiwan
- Regeneration Medicine and Cell Therapy Research Center Kaohsiung Medical University Kaohsiung Taiwan
- Department of Orthopedics College of Medicine Kaohsiung Medical University Kaohsiung Taiwan
| | - Je‐Ken Chang
- Orthopaedic Research Centre Kaohsiung Medical University Kaohsiung Taiwan
- Regeneration Medicine and Cell Therapy Research Center Kaohsiung Medical University Kaohsiung Taiwan
- Department of Orthopedics Kaohsiung Municipal Ta‐Tung Hospital Kaohsiung Medical University Kaohsiung Taiwan
- Division of Adult Reconstruction Surgery Department of Orthopedics Kaohsiung Medical University Hospital Kaohsiung Medical University Kaohsiung Taiwan
| | - Mei‐Ling Ho
- Graduate Institute of Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan
- Orthopaedic Research Centre Kaohsiung Medical University Kaohsiung Taiwan
- Regeneration Medicine and Cell Therapy Research Center Kaohsiung Medical University Kaohsiung Taiwan
- Department of Orthopedics College of Medicine Kaohsiung Medical University Kaohsiung Taiwan
- Department of Physiology College of Medicine Kaohsiung Medical University Kaohsiung Taiwan
| | - Chau‐Zen Wang
- Graduate Institute of Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan
- Orthopaedic Research Centre Kaohsiung Medical University Kaohsiung Taiwan
- Regeneration Medicine and Cell Therapy Research Center Kaohsiung Medical University Kaohsiung Taiwan
- Department of Physiology College of Medicine Kaohsiung Medical University Kaohsiung Taiwan
- Department of Medical Research Kaohsiung Medical University Hospital Kaohsiung Taiwan
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22
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Lim J, Li X, Yuan X, Yang S, Han L, Yang S. Primary cilia control cell alignment and patterning in bone development via ceramide-PKCζ-β-catenin signaling. Commun Biol 2020; 3:45. [PMID: 31988398 PMCID: PMC6985158 DOI: 10.1038/s42003-020-0767-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 12/16/2019] [Indexed: 02/01/2023] Open
Abstract
Intraflagellar transport (IFT) proteins are essential for cilia assembly and function. IFT protein mutations lead to ciliopathies, which manifest as variable skeletal abnormalities. However, how IFT proteins regulate cell alignment during bone development is unknown. Here, we show that the deletion of IFT20 in osteoblast lineage using Osterix-Cre and inducible type I Collagen-CreERT cause a compromised cell alignment and a reduced bone mass. This finding was validated by the disorganized collagen fibrils and decreased bone strength and stiffness in IFT20-deficient femurs. IFT20 maintains cilia and cell alignment in osteoblasts, as the concentric organization of three-dimensional spheroids was disrupted by IFT20 deletion. Mechanistically, IFT20 interacts with the ceramide-PKCζ complex to promote PKCζ phosphorylation in cilia and induce the apical localization of β-catenin in osteoblasts, both of which were disrupted in the absence of IFT20. These results reveal that IFT20 regulates polarity and cell alignment via ceramide-pPKCζ-β-catenin signaling during bone development.
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Affiliation(s)
- Jormay Lim
- Department of Anatomy and Cell Biology, University of Pennsylvania, School of Dental Medicine, Philadelphia, PA 19104, USA
| | - Xinhua Li
- Department of Anatomy and Cell Biology, University of Pennsylvania, School of Dental Medicine, Philadelphia, PA 19104, USA
| | - Xue Yuan
- Department of Oral Biology, State University of New York at Buffalo, School of Dental Medicine, Buffalo, NY, USA
| | - Shuting Yang
- Department of Anatomy and Cell Biology, University of Pennsylvania, School of Dental Medicine, Philadelphia, PA 19104, USA
| | - Lin Han
- Department of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA 19104, USA
| | - Shuying Yang
- Department of Anatomy and Cell Biology, University of Pennsylvania, School of Dental Medicine, Philadelphia, PA 19104, USA.
- Department of Oral Biology, State University of New York at Buffalo, School of Dental Medicine, Buffalo, NY, USA.
- The Penn Center for Musculoskeletal Disorders, University of Pennsylvania, School of Medicine, Philadelphia, PA, 19104, USA.
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23
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Gignac SJ, Hosseini-Farahabadi S, Akazawa T, Schuck NJ, Fu K, Richman JM. Robinow syndrome skeletal phenotypes caused by the WNT5AC83S variant are due to dominant interference with chondrogenesis. Hum Mol Genet 2019; 28:2395-2414. [PMID: 31032853 DOI: 10.1093/hmg/ddz071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 03/26/2019] [Accepted: 03/28/2019] [Indexed: 12/14/2022] Open
Abstract
Heterozygous missense mutations in several genes in the WNT5A signaling pathway cause autosomal dominant Robinow syndrome 1 (DRS1). Our objective was to clarify the functional impact of a missense mutation in WNT5A on the skeleton, one of the main affected tissues in RS. We delivered avian replication competent retroviruses (RCAS) containing human wild-type WNT5A (wtWNT5A), WNT5AC83S variant or GFP/AlkPO4 control genes to the chicken embryo limb. Strikingly, WNT5AC83S consistently caused a delay in ossification and bones were more than 50% shorter and 200% wider than controls. In contrast, bone dimensions in wtWNT5A limbs were slightly affected (20% shorter, 25% wider) but ossification occurred on schedule. The dysmorphology of bones was established during cartilage differentiation. Instead of stereotypical stacking of chondrocytes, the WNT5AC83S-infected cartilage was composed of randomly oriented chondrocytes and that had diffuse, rather than concentrated Prickle staining, both signs of disrupted planar cell polarity (PCP) mechanisms. Biochemical assays revealed that C83S variant was able to activate the Jun N-terminal kinase-PCP pathway similar to wtWNT5A; however, the activity of the variant ligand was influenced by receptor availability. Unexpectedly, the C83S change caused a reduction in the amount of protein being synthesized and secreted, compared to wtWNT5A. Thus, in the chicken and human, RS phenotypes are produced from the C83S mutation, even though the variant protein is less abundant than wtWNT5A. We conclude the variant protein has dominant-negative effects on chondrogenesis leading to limb abnormalities.
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Affiliation(s)
- Sarah J Gignac
- Life Sciences Institute and Faculty of Dentistry, University of British Columbia, Vancouver, Canada
| | - Sara Hosseini-Farahabadi
- Life Sciences Institute and Faculty of Dentistry, University of British Columbia, Vancouver, Canada
| | - Takashi Akazawa
- Life Sciences Institute and Faculty of Dentistry, University of British Columbia, Vancouver, Canada
| | - Nathan J Schuck
- Life Sciences Institute and Faculty of Dentistry, University of British Columbia, Vancouver, Canada
| | - Katherine Fu
- Life Sciences Institute and Faculty of Dentistry, University of British Columbia, Vancouver, Canada
| | - Joy M Richman
- Life Sciences Institute and Faculty of Dentistry, University of British Columbia, Vancouver, Canada
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24
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Yin W, Kim HT, Wang S, Gunawan F, Li R, Buettner C, Grohmann B, Sengle G, Sinner D, Offermanns S, Stainier DYR. Fibrillin-2 is a key mediator of smooth muscle extracellular matrix homeostasis during mouse tracheal tubulogenesis. Eur Respir J 2019; 53:13993003.00840-2018. [PMID: 30578393 DOI: 10.1183/13993003.00840-2018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 11/28/2018] [Indexed: 12/16/2022]
Abstract
Epithelial tubes, comprised of polarised epithelial cells around a lumen, are crucial for organ function. However, the molecular mechanisms underlying tube formation remain largely unknown. Here, we report on the function of fibrillin (FBN)2, an extracellular matrix (ECM) glycoprotein, as a critical regulator of tracheal tube formation.We performed a large-scale forward genetic screen in mouse to identify regulators of respiratory organ development and disease. We identified Fbn2 mutants which exhibit shorter and narrowed tracheas as well as defects in tracheal smooth muscle cell alignment and polarity.We found that FBN2 is essential for elastic fibre formation and Fibronectin accumulation around tracheal smooth muscle cells. These processes appear to be regulated at least in part through inhibition of p38-mediated upregulation of matrix metalloproteinases (MMPs), as pharmacological decrease of p38 phosphorylation or MMP activity partially attenuated the Fbn2 mutant tracheal phenotypes. Analysis of human tracheal tissues indicates that a decrease in ECM proteins, including FBN2 and Fibronectin, is associated with tracheomalacia.Our findings provide novel insights into the role of ECM homeostasis in mesenchymal cell polarisation during tracheal tubulogenesis.
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Affiliation(s)
- Wenguang Yin
- Max Planck Institute for Heart and Lung Research, Dept of Developmental Genetics, Bad Nauheim, Germany.,W. Yin and D.Y.R. Stainier are joint senior authors
| | - Hyun-Taek Kim
- Max Planck Institute for Heart and Lung Research, Dept of Developmental Genetics, Bad Nauheim, Germany
| | - ShengPeng Wang
- Max Planck Institute for Heart and Lung Research, Dept of Pharmacology, Bad Nauheim, Germany.,Cardiovascular Research Center, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, China
| | - Felix Gunawan
- Max Planck Institute for Heart and Lung Research, Dept of Developmental Genetics, Bad Nauheim, Germany
| | - Rui Li
- Max Planck Institute for Heart and Lung Research, Dept of Pharmacology, Bad Nauheim, Germany
| | - Carmen Buettner
- Max Planck Institute for Heart and Lung Research, Dept of Developmental Genetics, Bad Nauheim, Germany
| | - Beate Grohmann
- Max Planck Institute for Heart and Lung Research, Dept of Developmental Genetics, Bad Nauheim, Germany
| | - Gerhard Sengle
- Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne (CMMC), Cologne, Germany
| | - Debora Sinner
- Division of Neonatology and Pulmonary Biology, CCHMC, University of Cincinnati, College of Medicine Cincinnati, OH, USA
| | - Stefan Offermanns
- Max Planck Institute for Heart and Lung Research, Dept of Pharmacology, Bad Nauheim, Germany.,Center for Molecular Medicine, Goethe University, Frankfurt, Germany
| | - Didier Y R Stainier
- Max Planck Institute for Heart and Lung Research, Dept of Developmental Genetics, Bad Nauheim, Germany.,W. Yin and D.Y.R. Stainier are joint senior authors
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25
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Newton PT, Li L, Zhou B, Schweingruber C, Hovorakova M, Xie M, Sun X, Sandhow L, Artemov AV, Ivashkin E, Suter S, Dyachuk V, El Shahawy M, Gritli-Linde A, Bouderlique T, Petersen J, Mollbrink A, Lundeberg J, Enikolopov G, Qian H, Fried K, Kasper M, Hedlund E, Adameyko I, Sävendahl L, Chagin AS. A radical switch in clonality reveals a stem cell niche in the epiphyseal growth plate. Nature 2019; 567:234-238. [PMID: 30814736 DOI: 10.1038/s41586-019-0989-6] [Citation(s) in RCA: 129] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 02/01/2019] [Indexed: 12/22/2022]
Abstract
Longitudinal bone growth in children is sustained by growth plates, narrow discs of cartilage that provide a continuous supply of chondrocytes for endochondral ossification1. However, it remains unknown how this supply is maintained throughout childhood growth. Chondroprogenitors in the resting zone are thought to be gradually consumed as they supply cells for longitudinal growth1,2, but this model has never been proved. Here, using clonal genetic tracing with multicolour reporters and functional perturbations, we demonstrate that longitudinal growth during the fetal and neonatal periods involves depletion of chondroprogenitors, whereas later in life, coinciding with the formation of the secondary ossification centre, chondroprogenitors acquire the capacity for self-renewal, resulting in the formation of large, stable monoclonal columns of chondrocytes. Simultaneously, chondroprogenitors begin to express stem cell markers and undergo symmetric cell division. Regulation of the pool of self-renewing progenitors involves the hedgehog and mammalian target of rapamycin complex 1 (mTORC1) signalling pathways. Our findings indicate that a stem cell niche develops postnatally in the epiphyseal growth plate, which provides a continuous supply of chondrocytes over a prolonged period.
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Affiliation(s)
- Phillip T Newton
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden. .,Department of Women's and Children's Health, Karolinska Institutet and Pediatric Endocrinology Unit, Karolinska University Hospital, Stockholm, Sweden.
| | - Lei Li
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Baoyi Zhou
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | | | - Maria Hovorakova
- Department of Developmental Biology, Institute of Experimental Medicine, The Czech Academy of Sciences, Prague, Czech Republic
| | - Meng Xie
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Xiaoyan Sun
- Department of Biosciences and Nutrition and Center for Innovative Medicine, Karolinska Institutet, Huddinge, Sweden
| | - Lakshmi Sandhow
- Center for Hematology and Regenerative Medicine, Karolinska Institutet, Huddinge, Sweden
| | - Artem V Artemov
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.,Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | - Evgeny Ivashkin
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Simon Suter
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Vyacheslav Dyachuk
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden.,National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russian Federation
| | - Maha El Shahawy
- Department of Oral Biochemistry, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Amel Gritli-Linde
- Department of Oral Biochemistry, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Thibault Bouderlique
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Julian Petersen
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.,Department of Molecular Neurosciences, Center for Brain Research, Medical University Vienna, Vienna, Austria
| | - Annelie Mollbrink
- Science for Life Laboratory, Department of Gene Technology, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Joakim Lundeberg
- Science for Life Laboratory, Department of Gene Technology, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Grigori Enikolopov
- Center for Developmental Genetics and Department of Anesthesiology, Stony Brook University, Stony Brook, NY, USA
| | - Hong Qian
- Center for Hematology and Regenerative Medicine, Karolinska Institutet, Huddinge, Sweden
| | - Kaj Fried
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Maria Kasper
- Department of Biosciences and Nutrition and Center for Innovative Medicine, Karolinska Institutet, Huddinge, Sweden
| | - Eva Hedlund
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Igor Adameyko
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.,Department of Molecular Neurosciences, Center for Brain Research, Medical University Vienna, Vienna, Austria
| | - Lars Sävendahl
- Department of Women's and Children's Health, Karolinska Institutet and Pediatric Endocrinology Unit, Karolinska University Hospital, Stockholm, Sweden
| | - Andrei S Chagin
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden. .,Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, Russian Federation.
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27
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Pazzaglia UE, Reguzzoni M, Casati L, Minini A, Salvi AG, Sibilia V. Long bone human anlage longitudinal and circumferential growth in the fetal period and comparison with the growth plate cartilage of the postnatal age. Microsc Res Tech 2018; 82:190-198. [PMID: 30582248 DOI: 10.1002/jemt.23153] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 09/03/2018] [Accepted: 09/21/2018] [Indexed: 11/11/2022]
Abstract
The patterns of longitudinal and peripheral growth were analyzed in human autopod cartilage anlagen (fetal developmental stage 20th-22nd week) through morphometric assessment of chondrocyte parameter size, shape, alignment and orientation between peripheral and central sectors of the anlage transition zone defined by primary ossification center and the epiphyseal basis. The aim was to correlate the chondrocyte dynamics with the longitudinal and peripheral growth. A further comparison was carried out between the corresponding sectors of the postnatal (3-5 months old) growth plate cartilage documenting: (1) the different chondrocyte framework and the new peripheral mechanism; (2) the opposite direction of fetal periosteal ossification versus the Lacroix bone bark. Measurement of multiple parameters (% lac area, % total matrix area, total lac density and mean single lac area), which characterize the cartilage Anlage growth, suggested the following correlations with chondrocyte duplication rate: (a) slow duplication rate ≈ coupled, intralacunar chondrocytes (in central epiphysis); (b) repeated/frequent cell duplications ≈ clusters (in the basal epiphyseal layer); (c) clusters of chondrocytes before becoming hypertrophic were stacked up on the top of each other (both in the Anlage transition zone or in the columns of metaphyseal growth plate); (d) enhanced osteoclastic resorption of the Lacroix bone bark lower end, extended to the more external metaphyseal trabeculae counterbalancing the discrepancy between the epiphyseal and the diaphyseal circumferential growth.
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Affiliation(s)
- Ugo E Pazzaglia
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Marcella Reguzzoni
- Department of Surgical and Morphological Sciences, University of Insubria, Varese, Italy
| | - Lavinia Casati
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Andrea Minini
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Andrea G Salvi
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Valeria Sibilia
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
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28
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Discs large 1 controls daughter-cell polarity after cytokinesis in vertebrate morphogenesis. Proc Natl Acad Sci U S A 2018; 115:E10859-E10868. [PMID: 30377270 DOI: 10.1073/pnas.1713959115] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Vertebrate embryogenesis and organogenesis are driven by cell biological processes, ranging from mitosis and migration to changes in cell size and polarity, but their control and causal relationships are not fully defined. Here, we use the developing limb skeleton to better define the relationships between mitosis and cell polarity. We combine protein-tagging and -perturbation reagents with advanced in vivo imaging to assess the role of Discs large 1 (Dlg1), a membrane-associated scaffolding protein, in mediating the spatiotemporal relationship between cytokinesis and cell polarity. Our results reveal that Dlg1 is enriched at the midbody during cytokinesis and that its multimerization is essential for the normal polarity of daughter cells. Defects in this process alter tissue dimensions without impacting other cellular processes. Our results extend the conventional view that division orientation is established at metaphase and anaphase and suggest that multiple mechanisms act at distinct phases of the cell cycle to transmit cell polarity. The approach employed can be used in other systems, as it offers a robust means to follow and to eliminate protein function and extends the Phasor approach for studying in vivo protein interactions by frequency-domain fluorescence lifetime imaging microscopy of Förster resonance energy transfer (FLIM-FRET) to organotypic explant culture.
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29
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Moore ER, Yang Y, Jacobs CR. Primary cilia are necessary for Prx1-expressing cells to contribute to postnatal skeletogenesis. J Cell Sci 2018; 131:jcs.217828. [PMID: 30002136 DOI: 10.1242/jcs.217828] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 07/06/2018] [Indexed: 12/30/2022] Open
Abstract
Although Prx1 (also known as PRRX1)-expressing cells and their primary cilia are critical for embryonic development, they have yet to be studied in the context of postnatal skeletogenesis owing to the lethality of mouse models. A tamoxifen-inducible Prx1 model has been developed, and we determined that expression directed by this promoter is highly restricted to the cambium layers in the periosteum and perichondrium after birth. To determine the postnatal role of these cambium layer osteochondroprogenitors (CLOPs) and their primary cilia, we developed models to track the fate of CLOPs (Prx1CreER-GFP;Rosa26tdTomato) and selectively disrupt their cilia (Prx1CreER-GFP;Ift88fl/fl). Our tracking studies revealed that CLOPs populate cortical and trabecular bone, the growth plate and secondary ossification centers during the normal program of postnatal skeletogenesis. Furthermore, animals lacking CLOP cilia exhibit stunted limb growth due to disruptions in endochondral and intramembranous ossification. Histological examination indicates that growth is stunted due to limited differentiation, proliferation and/or abnormal hypertrophic differentiation in the growth plate. Collectively, our results suggest that CLOPs are programmed to rapidly populate distant tissues and produce bone via a primary cilium-mediated mechanism in the postnatal skeleton.
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Affiliation(s)
- Emily R Moore
- Department of Biomedical Engineering, Columbia University, 500 W 120th St, New York, NY 10027, USA
| | - Yuchen Yang
- Department of Biomedical Engineering, Columbia University, 500 W 120th St, New York, NY 10027, USA
| | - Christopher R Jacobs
- Department of Biomedical Engineering, Columbia University, 500 W 120th St, New York, NY 10027, USA
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30
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Gao B, Ajima R, Yang W, Li C, Song H, Anderson MJ, Liu RR, Lewandoski MB, Yamaguchi TP, Yang Y. Coordinated directional outgrowth and pattern formation by integration of Wnt5a and Fgf signaling in planar cell polarity. Development 2018; 145:dev.163824. [PMID: 29615464 DOI: 10.1242/dev.163824] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 03/19/2018] [Indexed: 12/28/2022]
Abstract
Embryonic morphogenesis of a complex organism requires proper regulation of patterning and directional growth. Planar cell polarity (PCP) signaling is emerging as a crucial evolutionarily conserved mechanism whereby directional information is conveyed. PCP is thought to be established by global cues, and recent studies have revealed an instructive role of a Wnt signaling gradient in epithelial tissues of both invertebrates and vertebrates. However, it remains unclear whether Wnt/PCP signaling is regulated in a coordinated manner with embryonic patterning during morphogenesis. Here, in mouse developing limbs, we find that apical ectoderm ridge-derived Fgfs required for limb patterning regulate PCP along the proximal-distal axis in a Wnt5a-dependent manner. We demonstrate with genetic evidence that the Wnt5a gradient acts as a global cue that is instructive in establishing PCP in the limb mesenchyme, and that Wnt5a also plays a permissive role to allow Fgf signaling to orient PCP. Our results indicate that limb morphogenesis is regulated by coordination of directional growth and patterning through integration of Wnt5a and Fgf signaling.
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Affiliation(s)
- Bo Gao
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China .,Developmental Genetics Section, Genetic Disease Research Branch, National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA
| | - Rieko Ajima
- Cancer and Developmental Biology Laboratory, Center for Cancer Research, National Cancer Institute-Frederick, NIH, Frederick, MD 21702, USA
| | - Wei Yang
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Chunyu Li
- Developmental Genetics Section, Genetic Disease Research Branch, National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA.,Department of Hand Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, China
| | - Hai Song
- Developmental Genetics Section, Genetic Disease Research Branch, National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA
| | - Matthew J Anderson
- Cancer and Developmental Biology Laboratory, Center for Cancer Research, National Cancer Institute-Frederick, NIH, Frederick, MD 21702, USA
| | - Robert R Liu
- Developmental Genetics Section, Genetic Disease Research Branch, National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA
| | - Mark B Lewandoski
- Cancer and Developmental Biology Laboratory, Center for Cancer Research, National Cancer Institute-Frederick, NIH, Frederick, MD 21702, USA
| | - Terry P Yamaguchi
- Cancer and Developmental Biology Laboratory, Center for Cancer Research, National Cancer Institute-Frederick, NIH, Frederick, MD 21702, USA
| | - Yingzi Yang
- Developmental Genetics Section, Genetic Disease Research Branch, National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA .,Department of Developmental Biology, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA 02115, USA
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31
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Moore ER, Jacobs CR. The primary cilium as a signaling nexus for growth plate function and subsequent skeletal development. J Orthop Res 2018; 36:533-545. [PMID: 28901584 PMCID: PMC5839937 DOI: 10.1002/jor.23732] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 09/07/2017] [Indexed: 02/04/2023]
Abstract
The primary cilium is a solitary, antenna-like sensory organelle with many important roles in cartilage and bone development, maintenance, and function. The primary cilium's potential role as a signaling nexus in the growth plate makes it an attractive therapeutic target for diseases and disorders associated with bone development and maintenance. Many signaling pathways that are mediated by the cilium-such as Hh, Wnt, Ihh/PTHrP, TGFβ, BMP, FGF, and Notch-are also known to influence endochondral ossification, primarily by directing growth plate formation and chondrocyte behavior. Although a few studies have demonstrated that these signaling pathways can be directly tied to the primary cilium, many pathways have yet to be evaluated in context of the cilium. This review serves to bridge this knowledge gap in the literature, as well as discuss the cilium's importance in the growth plate's ability to sense and respond to chemical and mechanical stimuli. Furthermore, we explore the importance of using the appropriate mechanism to study the cilium in vivo and suggest IFT88 deletion is the best available technique. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:533-545, 2018.
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Affiliation(s)
- Emily R. Moore
- Department of Biomedical Engineering; Columbia University; 351 Engineering Terrace, Mail Code 8904, 1210 Amsterdam Avenue New York 10027 New York
| | - Christopher R. Jacobs
- Department of Biomedical Engineering; Columbia University; 351 Engineering Terrace, Mail Code 8904, 1210 Amsterdam Avenue New York 10027 New York
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32
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Medina-Gomez C, Kemp JP, Trajanoska K, Luan J, Chesi A, Ahluwalia TS, Mook-Kanamori DO, Ham A, Hartwig FP, Evans DS, Joro R, Nedeljkovic I, Zheng HF, Zhu K, Atalay M, Liu CT, Nethander M, Broer L, Porleifsson G, Mullin BH, Handelman SK, Nalls MA, Jessen LE, Heppe DH, Richards JB, Wang C, Chawes B, Schraut KE, Amin N, Wareham N, Karasik D, Van der Velde N, Ikram MA, Zemel BS, Zhou Y, Carlsson CJ, Liu Y, McGuigan FE, Boer CG, Bønnelykke K, Ralston SH, Robbins JA, Walsh JP, Zillikens MC, Langenberg C, Li-Gao R, Williams FM, Harris TB, Akesson K, Jackson RD, Sigurdsson G, den Heijer M, van der Eerden BC, van de Peppel J, Spector TD, Pennell C, Horta BL, Felix JF, Zhao JH, Wilson SG, de Mutsert R, Bisgaard H, Styrkársdóttir U, Jaddoe VW, Orwoll E, Lakka TA, Scott R, Grant SF, Lorentzon M, van Duijn CM, Wilson JF, Stefansson K, Psaty BM, Kiel DP, Ohlsson C, Ntzani E, van Wijnen AJ, Forgetta V, Ghanbari M, Logan JG, Williams GR, Bassett JD, Croucher PI, Evangelou E, Uitterlinden AG, Ackert-Bicknell CL, Tobias JH, Evans DM, Rivadeneira F. Life-Course Genome-wide Association Study Meta-analysis of Total Body BMD and Assessment of Age-Specific Effects. Am J Hum Genet 2018; 102:88-102. [PMID: 29304378 DOI: 10.1016/j.ajhg.2017.12.005] [Citation(s) in RCA: 212] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 11/30/2017] [Indexed: 12/22/2022] Open
Abstract
Bone mineral density (BMD) assessed by DXA is used to evaluate bone health. In children, total body (TB) measurements are commonly used; in older individuals, BMD at the lumbar spine (LS) and femoral neck (FN) is used to diagnose osteoporosis. To date, genetic variants in more than 60 loci have been identified as associated with BMD. To investigate the genetic determinants of TB-BMD variation along the life course and test for age-specific effects, we performed a meta-analysis of 30 genome-wide association studies (GWASs) of TB-BMD including 66,628 individuals overall and divided across five age strata, each spanning 15 years. We identified variants associated with TB-BMD at 80 loci, of which 36 have not been previously identified; overall, they explain approximately 10% of the TB-BMD variance when combining all age groups and influence the risk of fracture. Pathway and enrichment analysis of the association signals showed clustering within gene sets implicated in the regulation of cell growth and SMAD proteins, overexpressed in the musculoskeletal system, and enriched in enhancer and promoter regions. These findings reveal TB-BMD as a relevant trait for genetic studies of osteoporosis, enabling the identification of variants and pathways influencing different bone compartments. Only variants in ESR1 and close proximity to RANKL showed a clear effect dependency on age. This most likely indicates that the majority of genetic variants identified influence BMD early in life and that their effect can be captured throughout the life course.
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33
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White JJ, Mazzeu JF, Coban-Akdemir Z, Bayram Y, Bahrambeigi V, Hoischen A, van Bon BWM, Gezdirici A, Gulec EY, Ramond F, Touraine R, Thevenon J, Shinawi M, Beaver E, Heeley J, Hoover-Fong J, Durmaz CD, Karabulut HG, Marzioglu-Ozdemir E, Cayir A, Duz MB, Seven M, Price S, Ferreira BM, Vianna-Morgante AM, Ellard S, Parrish A, Stals K, Flores-Daboub J, Jhangiani SN, Gibbs RA, Brunner HG, Sutton VR, Lupski JR, Carvalho CMB. WNT Signaling Perturbations Underlie the Genetic Heterogeneity of Robinow Syndrome. Am J Hum Genet 2018; 102:27-43. [PMID: 29276006 DOI: 10.1016/j.ajhg.2017.10.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 10/06/2017] [Indexed: 12/12/2022] Open
Abstract
Locus heterogeneity characterizes a variety of skeletal dysplasias often due to interacting or overlapping signaling pathways. Robinow syndrome is a skeletal disorder historically refractory to molecular diagnosis, potentially stemming from substantial genetic heterogeneity. All current known pathogenic variants reside in genes within the noncanonical Wnt signaling pathway including ROR2, WNT5A, and more recently, DVL1 and DVL3. However, ∼70% of autosomal-dominant Robinow syndrome cases remain molecularly unsolved. To investigate this missing heritability, we recruited 21 families with at least one family member clinically diagnosed with Robinow or Robinow-like phenotypes and performed genetic and genomic studies. In total, four families with variants in FZD2 were identified as well as three individuals from two families with biallelic variants in NXN that co-segregate with the phenotype. Importantly, both FZD2 and NXN are relevant protein partners in the WNT5A interactome, supporting their role in skeletal development. In addition to confirming that clustered -1 frameshifting variants in DVL1 and DVL3 are the main contributors to dominant Robinow syndrome, we also found likely pathogenic variants in candidate genes GPC4 and RAC3, both linked to the Wnt signaling pathway. These data support an initial hypothesis that Robinow syndrome results from perturbation of the Wnt/PCP pathway, suggest specific relevant domains of the proteins involved, and reveal key contributors in this signaling cascade during human embryonic development. Contrary to the view that non-allelic genetic heterogeneity hampers gene discovery, this study demonstrates the utility of rare disease genomic studies to parse gene function in human developmental pathways.
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Affiliation(s)
- Janson J White
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston TX 77030, USA
| | - Juliana F Mazzeu
- University of Brasilia, Brasilia 70910, Brazil; Robinow Syndrome Foundation, Anoka, MN 55303, USA
| | - Zeynep Coban-Akdemir
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston TX 77030, USA
| | - Yavuz Bayram
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston TX 77030, USA
| | - Vahid Bahrambeigi
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston TX 77030, USA; Graduate Program in Diagnostic Genetics, School of Health Professions, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Alexander Hoischen
- Department of Human Genetics, Radboud Institute of Molecular Life Sciences, Radboud University Medical Center, 6500 HB Nijmegen, the Netherlands; Department of Internal Medicine and Radboud Center for Infectious Diseases (RCI), Radboud University Medical Center, 6500 HB Nijmegen, the Netherlands
| | - Bregje W M van Bon
- Department of Human Genetics, Radboud Institute of Molecular Life Sciences, Radboud University Medical Center, 6500 HB Nijmegen, the Netherlands
| | - Alper Gezdirici
- Department of Medical Genetics, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul 34303, Turkey
| | - Elif Yilmaz Gulec
- Department of Medical Genetics, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul 34303, Turkey
| | - Francis Ramond
- Service de Génétique, CHU-Hôpital Nord, 42000 Saint-Etienne, France
| | - Renaud Touraine
- Service de Génétique, CHU-Hôpital Nord, 42000 Saint-Etienne, France
| | - Julien Thevenon
- Inserm UMR 1231 GAD team, Genetics of Developmental Anomalies, Université de Bourgogne-Franche Comté, 21000 Dijon, France; FHU-TRANSLAD, Université de Bourgogne, 21000 CHU Dijon, France; Centre de génétique, Hôpital Couple-Enfant, CHU de Grenoble-Alpes, 38700 La Tronche, France
| | - Marwan Shinawi
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Erin Beaver
- Mercy Clinic-Kids Genetics, Mercy Children's Hospital St. Louis, St. Louis, MO 63141, USA
| | - Jennifer Heeley
- Mercy Clinic-Kids Genetics, Mercy Children's Hospital St. Louis, St. Louis, MO 63141, USA
| | - Julie Hoover-Fong
- Greenberg Center for Skeletal Dysplasias, McKusick-Nathans Institute for Genetic Medicine, Johns Hopkins University, Baltimore, MD 21287, USA
| | - Ceren D Durmaz
- Department of Medical Genetics, Ankara University School of Medicine, 06100 Ankara, Turkey
| | - Halil Gurhan Karabulut
- Department of Medical Genetics, Ankara University School of Medicine, 06100 Ankara, Turkey
| | - Ebru Marzioglu-Ozdemir
- Department of Medical Genetics, Erzurum Regional and Training Hospital, 25070 Erzurum, Turkey
| | - Atilla Cayir
- Erzurum Training and Research Hospital, Department of Pediatric Endocrinology, 25070 Erzurum, Turkey
| | - Mehmet B Duz
- Department of Medical Genetics, Cerrahpasa Medical School, Istanbul University, 34452 Istanbul, Turkey
| | - Mehmet Seven
- Department of Medical Genetics, Cerrahpasa Medical School, Istanbul University, 34452 Istanbul, Turkey
| | - Susan Price
- Oxford Centre for Genomic Medicine, Nuffield Orthopaedic Centre, Oxford OX3 7LD, UK
| | | | - Angela M Vianna-Morgante
- Department of Genetics and Evolutionary Biology, Institute of Biosciences, Sao Paulo - SP 05508-090, Brazil
| | - Sian Ellard
- Department of Molecular Genetics, Royal Devon and Exeter NHS Foundation Trust, Exeter EX2 5DW, UK; Institute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter EX1 2LU, UK
| | - Andrew Parrish
- Department of Molecular Genetics, Royal Devon and Exeter NHS Foundation Trust, Exeter EX2 5DW, UK
| | - Karen Stals
- Department of Molecular Genetics, Royal Devon and Exeter NHS Foundation Trust, Exeter EX2 5DW, UK
| | - Josue Flores-Daboub
- Department of Pediatric Genetics, University of Utah School of Medicine, Salt Lake City, UT 84108, USA
| | - Shalini N Jhangiani
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Richard A Gibbs
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston TX 77030, USA; Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Han G Brunner
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, 6500 HB Nijmegen, the Netherlands; Department of Clinical Genetics, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, 6202 AZ Maastricht, the Netherlands
| | - V Reid Sutton
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA
| | - James R Lupski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston TX 77030, USA; Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA
| | - Claudia M B Carvalho
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston TX 77030, USA.
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34
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Moreno-Fortuny A, Bragg L, Cossu G, Roostalu U. MCAM contributes to the establishment of cell autonomous polarity in myogenic and chondrogenic differentiation. Biol Open 2017; 6:1592-1601. [PMID: 28923978 PMCID: PMC5703611 DOI: 10.1242/bio.027771] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Cell polarity has a fundamental role in shaping the morphology of cells and growing tissues. Polarity is commonly thought to be established in response to extracellular signals. Here we used a minimal in vitro assay that enabled us to monitor the determination of cell polarity in myogenic and chondrogenic differentiation in the absence of external signalling gradients. We demonstrate that the initiation of cell polarity is regulated by melanoma cell adhesion molecule (MCAM). We found highly polarized localization of MCAM, Moesin (MSN), Scribble (SCRIB) and Van-Gogh-like 2 (VANGL2) at the distal end of elongating myotubes. Knockout of MCAM or elimination of its endocytosis motif does not impair the initiation of myogenesis or myoblast fusion, but prevents myotube elongation. MSN, SCRIB and VANGL2 remain uniformly distributed in MCAM knockout cells. We show that MCAM is also required at early stages of chondrogenic differentiation. In both myogenic and chondrogenic differentiation MCAM knockout leads to transcriptional downregulation of Scrib and enhanced MAP kinase activity. Our data demonstrates the importance of cell autonomous polarity in differentiation. Summary: CD146/MCAM regulates cell autonomous polarization and asymmetric localization of Scribble, Van-Gogh-like 2 and Moesin, which is required in skeletal muscle myotube elongation and chondrocyte differentiation.
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Affiliation(s)
- Artal Moreno-Fortuny
- Manchester Academic Health Science Centre, Division of Extracellular Matrix and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PL, UK
| | - Laricia Bragg
- Manchester Academic Health Science Centre, Division of Extracellular Matrix and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PL, UK
| | - Giulio Cossu
- Manchester Academic Health Science Centre, Division of Extracellular Matrix and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PL, UK
| | - Urmas Roostalu
- Manchester Academic Health Science Centre, Division of Extracellular Matrix and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PL, UK
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Li Y, Li A, Junge J, Bronner M. Planar cell polarity signaling coordinates oriented cell division and cell rearrangement in clonally expanding growth plate cartilage. eLife 2017; 6. [PMID: 28994649 PMCID: PMC5634781 DOI: 10.7554/elife.23279] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 09/15/2017] [Indexed: 12/20/2022] Open
Abstract
Both oriented cell divisions and cell rearrangements are critical for proper embryogenesis and organogenesis. However, little is known about how these two cellular events are integrated. Here we examine the linkage between these processes in chick limb cartilage. By combining retroviral-based multicolor clonal analysis with live imaging, the results show that single chondrocyte precursors can generate both single-column and multi-column clones through oriented division followed by cell rearrangements. Focusing on single column formation, we show that this stereotypical tissue architecture is established by a pivot-like process between sister cells. After mediolateral cell division, N-cadherin is enriched in the post-cleavage furrow; then one cell pivots around the other, resulting in stacking into a column. Perturbation analyses demonstrate that planar cell polarity signaling enables cells to pivot in the direction of limb elongation via this N-cadherin-mediated coupling. Our work provides new insights into the mechanisms generating appropriate tissue architecture of limb skeleton.
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Affiliation(s)
- Yuwei Li
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, United States
| | - Ang Li
- Department of Pathology, University of Southern California, Keck School of Medicine, Los Angeles, United States
| | - Jason Junge
- Translational Imaging Center, University of Southern California, Los Angeles, United States
| | - Marianne Bronner
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, United States
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36
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Ribeiro L, Silva J, Ocarino N, Melo E, Serakides R. Excesso de tiroxina materna associado ao hipertireoidismo pós-natal reduz o crescimento ósseo e o perfil proliferativo e angiogênico das cartilagens de crescimento de ratos. ARQ BRAS MED VET ZOO 2017. [DOI: 10.1590/1678-4162-9175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
RESUMO Foram estudados os efeitos do excesso da tiroxina materna associado ao hipertireoidismo pós-natal sobre o crescimento ósseo e o perfil proliferativo e angiogênico das cartilagens. Dezesseis ratas Wistar adultas foram distribuídas nos grupos tratados com L-tiroxina e controle. A prole do grupo tratado recebeu L-tiroxina do desmame até 40 dias de idade. Ao desmame, foi realizada dosagem plasmática de T4 livre nas mães. Na prole, foram realizados: dosagem plasmática de T3 total e T4 livre, morfometria das tireoides, mensuração do comprimento e largura do fêmur. Nas cartilagens, foi avaliada a expressão imuno-histoquímica e gênica de CDC-47, VEGF, Flk-1, Ang1, Ang2 e Tie2. As médias entre grupos foram comparadas pelo teste T de Student. As concentrações de T4 livre das mães tratadas e de T3 total e T4 livre da prole foram significativamente mais elevadas. A largura do fêmur foi menor nos animais tratados. Houve também redução da imunoexpressão de CDC-47 e de VEGF e dos transcritos gênicos para VEGF e Ang1 nas cartilagens. Conclui-se que o excesso de tiroxina materna associado ao hipertireoidismo pós-natal reduz a largura da diáfise femoral, a proliferação celular e a expressão de VEGF e de Ang1 nas cartilagens de crescimento de ratos.
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Affiliation(s)
| | - J.F. Silva
- Universidade Federal de Minas Gerais, Brazil
| | | | - E.G. Melo
- Universidade Federal de Minas Gerais, Brazil
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Brunt LH, Begg K, Kague E, Cross S, Hammond CL. Wnt signalling controls the response to mechanical loading during zebrafish joint development. Development 2017; 144:2798-2809. [PMID: 28684625 PMCID: PMC5560048 DOI: 10.1242/dev.153528] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 06/14/2017] [Indexed: 12/24/2022]
Abstract
Joint morphogenesis requires mechanical activity during development. Loss of mechanical strain causes abnormal joint development, which can impact long-term joint health. Although cell orientation and proliferation are known to shape the joint, dynamic imaging of developing joints in vivo has not been possible in other species. Using genetic labelling techniques in zebrafish we were able, for the first time, to dynamically track cell behaviours in intact moving joints. We identify that proliferation and migration, which contribute to joint morphogenesis, are mechanically controlled and are significantly reduced in immobilised larvae. By comparison with strain maps of the developing skeleton, we identify canonical Wnt signalling as a candidate for transducing mechanical forces into joint cell behaviours. We show that, in the jaw, Wnt signalling is reduced specifically in regions of high strain in response to loss of muscle activity. By pharmacological manipulation of canonical Wnt signalling, we demonstrate that Wnt acts downstream of mechanical activity and is required for joint patterning and chondrocyte maturation. Wnt16, which is also downstream of muscle activity, controls proliferation and migration, but plays no role in chondrocyte intercalation.
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Affiliation(s)
- Lucy H Brunt
- Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol BS8 1TD, UK
| | - Katie Begg
- Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol BS8 1TD, UK
| | - Erika Kague
- Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol BS8 1TD, UK
| | - Stephen Cross
- Wolfson Bioimaging Facility, University of Bristol, Bristol BS8 1TD, UK
| | - Chrissy L Hammond
- Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol BS8 1TD, UK
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38
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Bernatik O, Radaszkiewicz T, Behal M, Dave Z, Witte F, Mahl A, Cernohorsky NH, Krejci P, Stricker S, Bryja V. A Novel Role for the BMP Antagonist Noggin in Sensitizing Cells to Non-canonical Wnt-5a/Ror2/Disheveled Pathway Activation. Front Cell Dev Biol 2017; 5:47. [PMID: 28523267 PMCID: PMC5415574 DOI: 10.3389/fcell.2017.00047] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 04/13/2017] [Indexed: 11/29/2022] Open
Abstract
Mammalian limb development is driven by the integrative input from several signaling pathways; a failure to receive or a misinterpretation of these signals results in skeletal defects. The brachydactylies, a group of overlapping inherited human hand malformation syndromes, are mainly caused by mutations in BMP signaling pathway components. Two closely related forms, Brachydactyly type B2 (BDB2) and BDB1 are caused by mutations in the BMP antagonist Noggin (NOG) and the atypical receptor tyrosine kinase ROR2 that acts as a receptor in the non-canonical Wnt pathway. Genetic analysis of Nog and Ror2 functional interaction via crossing Noggin and Ror2 mutant mice revealed a widening of skeletal elements in compound but not in any of the single mutants, thus indicating genetic interaction. Since ROR2 is a non-canonical Wnt co-receptor specific for Wnt-5a we speculated that this phenotype might be a result of deregulated Wnt-5a signaling activation, which is known to be essential for limb skeletal elements growth and patterning. We show that Noggin potentiates activation of the Wnt-5a-Ror2-Disheveled (Dvl) pathway in mouse embryonic fibroblast (MEF) cells in a Ror2-dependent fashion. Rat chondrosarcoma chondrocytes (RCS), however, are not able to respond to Noggin in this fashion unless growth arrest is induced by FGF2. In summary, our data demonstrate genetic interaction between Noggin and Ror2 and show that Noggin can sensitize cells to Wnt-5a/Ror2-mediated non-canonical Wnt signaling, a feature that in cartilage may depend on the presence of active FGF signaling. These findings indicate an unappreciated function of Noggin that will help to understand BMP and Wnt/PCP signaling pathway interactions.
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Affiliation(s)
- Ondrej Bernatik
- Faculty of Sciences, Institute of Experimental Biology, Masaryk UniversityBrno, Czechia
| | - Tomasz Radaszkiewicz
- Faculty of Sciences, Institute of Experimental Biology, Masaryk UniversityBrno, Czechia
| | - Martin Behal
- Faculty of Sciences, Institute of Experimental Biology, Masaryk UniversityBrno, Czechia
| | - Zankruti Dave
- Faculty of Sciences, Institute of Experimental Biology, Masaryk UniversityBrno, Czechia
| | - Florian Witte
- Institute for Chemistry and Biochemistry, Freie Universität BerlinBerlin, Germany
| | - Annika Mahl
- Institute for Chemistry and Biochemistry, Freie Universität BerlinBerlin, Germany
| | | | - Pavel Krejci
- Faculty of Sciences, Institute of Experimental Biology, Masaryk UniversityBrno, Czechia.,Department of Biology, Faculty of Medicine, Masaryk UniversityBrno, Czechia
| | - Sigmar Stricker
- Institute for Chemistry and Biochemistry, Freie Universität BerlinBerlin, Germany
| | - Vitezslav Bryja
- Faculty of Sciences, Institute of Experimental Biology, Masaryk UniversityBrno, Czechia.,Department of Cytokinetics, Institute of Biophysics AS CR, v.v.i.Brno, Czechia
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Pazzaglia UE, Congiu T, Sibilia V, Casati L, Minini A, Benetti A. Growth and shaping of metacarpal and carpal cartilage anlagen: application of morphometry to the development of short and long bone. A study of human hand anlagen in the fetal period. J Morphol 2017; 278:884-895. [DOI: 10.1002/jmor.20681] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 03/08/2017] [Accepted: 03/19/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Ugo E. Pazzaglia
- Department of Medical and Surgical Specialties; Radiological Sciences and Public Health, University of Brescia; Italy
| | - Terenzio Congiu
- Department of Surgical and Morphological Sciences; University of Insubria; Varese Italy
| | - Valeria Sibilia
- Department of Medical Biotechnology and Translational Medicine; University of Milan; Italy
| | - Lavinia Casati
- Department of Medical Biotechnology and Translational Medicine; University of Milan; Italy
| | - Andrea Minini
- Department of Medical and Surgical Specialties; Radiological Sciences and Public Health, University of Brescia; Italy
| | - Anna Benetti
- Department of Clinical and Experimental Sciences; University of Brescia; Italy
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40
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Amara CS, Fabritius C, Houben A, Wolff LI, Hartmann C. CaMKII Signaling Stimulates Mef2c Activity In Vitro but Only Minimally Affects Murine Long Bone Development in vivo. Front Cell Dev Biol 2017; 5:20. [PMID: 28361052 PMCID: PMC5352711 DOI: 10.3389/fcell.2017.00020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 03/02/2017] [Indexed: 01/17/2023] Open
Abstract
The long bones of vertebrate limbs form by endochondral ossification, whereby mesenchymal cells differentiate into chondrogenic progenitors, which then differentiate into chondrocytes. Chondrocytes undergo further differentiation from proliferating to prehypertrophic, and finally to hypertrophic chondrocytes. Several signaling pathways and transcription factors regulate this process. Previously, we and others have shown in chicken that overexpression of an activated form of Calcium/calmodulin-dependent kinase II (CaMKII) results in ectopic chondrocyte maturation. Here, we show that this is not the case in the mouse. Although, in vitro Mef2c activity was upregulated by about 55-fold in response to expression of an activated form of CaMKII (DACaMKII), transgenic mice that expressed a dominant-active form of CaMKII under the control of the Col2a1 regulatory elements display only a very transient and mild phenotype. Here, only the onset of chondrocyte hypertrophy at E12.5 is accelerated. It is also this early step in chondrocyte differentiation that is temporarily delayed around E13.5 in transgenic mice expressing the peptide inhibitor CaM-KIIN from rat (rKIIN) under the control of the Col2a1 regulatory elements. Yet, ultimately DACaMKII, as well as rKIIN transgenic mice are born with completely normal skeletal elements with regard to their length and growth plate organization. Hence, our in vivo analysis suggests that CaMKII signaling plays a minor role in chondrocyte maturation in mice.
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Affiliation(s)
- Chandra S Amara
- Department Bone and Skeletal Research, Medical Faculty of the University of Münster (WWU), Institute of Experimental Musculoskeletal Medicine Münster, Germany
| | - Christine Fabritius
- Department Bone and Skeletal Research, Medical Faculty of the University of Münster (WWU), Institute of Experimental Musculoskeletal Medicine Münster, Germany
| | - Astrid Houben
- Department Bone and Skeletal Research, Medical Faculty of the University of Münster (WWU), Institute of Experimental Musculoskeletal Medicine Münster, Germany
| | - Lena I Wolff
- Department Bone and Skeletal Research, Medical Faculty of the University of Münster (WWU), Institute of Experimental Musculoskeletal Medicine Münster, Germany
| | - Christine Hartmann
- Department Bone and Skeletal Research, Medical Faculty of the University of Münster (WWU), Institute of Experimental Musculoskeletal Medicine Münster, Germany
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Whitaker AT, Berthet E, Cantu A, Laird DJ, Alliston T. Smad4 regulates growth plate matrix production and chondrocyte polarity. Biol Open 2017; 6:358-364. [PMID: 28167493 PMCID: PMC5374397 DOI: 10.1242/bio.021436] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Smad4 is an intracellular effector of the TGFβ family that has been implicated in Myhre syndrome, a skeletal dysplasia characterized by short stature, brachydactyly and stiff joints. The TGFβ pathway also plays a critical role in the development, organization and proliferation of the growth plate, although the exact mechanisms remain unclear. Skeletal phenotypes in Myhre syndrome overlap with processes regulated by the TGFβ pathway, including organization and proliferation of the growth plate and polarity of the chondrocyte. We used in vitro and in vivo models of Smad4 deficiency in chondrocytes to test the hypothesis that deregulated TGFβ signaling leads to aberrant extracellular matrix production and loss of chondrocyte polarity. Specifically, we evaluated growth plate chondrocyte polarity in tibiae of Col2-Cre+/−;Smad4fl/fl mice and in chondrocyte pellet cultures. In vitro and in vivo, Smad4 deficiency decreased aggrecan expression and increased MMP13 expression. Smad4 deficiency disrupted the balance of cartilage matrix synthesis and degradation, even though the sequential expression of growth plate chondrocyte markers was intact. Chondrocytes in Smad4-deficient growth plates also showed evidence of polarity defects, with impaired proliferation and ability to undergo the characteristic changes in shape, size and orientation as they differentiated from resting to hypertrophic chondrocytes. Therefore, we show that Smad4 controls chondrocyte proliferation, orientation, and hypertrophy and is important in regulating the extracellular matrix composition of the growth plate. Summary: Smad4 is a key regulator of extracellular matrix production and chondrocyte proliferation, shape and orientation in the growth plate. Smad4 dysregulation results in skeletal dysplasias, such as Myhre syndrome.
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Affiliation(s)
- Amanda T Whitaker
- Department of Orthopaedic Surgery, University of California San Francisco, San Francisco, CA 94143, USA.,Department of Orthopaedic Surgery, Nationwide Children's Hospital, Columbus, Ohio 43205, USA
| | - Ellora Berthet
- Department of Orthopaedic Surgery, University of California San Francisco, San Francisco, CA 94143, USA
| | - Andrea Cantu
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of California San Francisco, San Francisco, CA 94143, USA.,Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA 94143, USA
| | - Diana J Laird
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of California San Francisco, San Francisco, CA 94143, USA.,Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA 94143, USA
| | - Tamara Alliston
- Department of Orthopaedic Surgery, University of California San Francisco, San Francisco, CA 94143, USA .,Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California San Francisco, San Francisco, CA 94143, USA.,Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA 94143, USA.,Department of Otolaryngology - Head and Neck Surgery, University of California San Francisco, San Francisco, CA 94143, USA
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42
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Diverse feather shape evolution enabled by coupling anisotropic signalling modules with self-organizing branching programme. Nat Commun 2017; 8:ncomms14139. [PMID: 28106042 PMCID: PMC5263876 DOI: 10.1038/ncomms14139] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 12/01/2016] [Indexed: 02/04/2023] Open
Abstract
Adaptation of feathered dinosaurs and Mesozoic birds to new ecological niches was potentiated by rapid diversification of feather vane shapes. The molecular mechanism driving this spectacular process remains unclear. Here, through morphology analysis, transcriptome profiling, functional perturbations and mathematical simulations, we find that mesenchyme-derived GDF10 and GREM1 are major controllers for the topologies of rachidial and barb generative zones (setting vane boundaries), respectively, by tuning the periodic-branching programme of epithelial progenitors. Their interactions with the anterior-posterior WNT gradient establish the bilateral-symmetric vane configuration. Additionally, combinatory effects of CYP26B1, CRABP1 and RALDH3 establish dynamic retinoic acid (RA) landscapes in feather mesenchyme, which modulate GREM1 expression and epithelial cell shapes. Incremental changes of RA gradient slopes establish a continuum of asymmetric flight feathers along the wing, while switch-like modulation of RA signalling confers distinct vane shapes between feather tracts. Therefore, the co-option of anisotropic signalling modules introduced new dimensions of feather shape diversification.
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43
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Abstract
ROR-family receptor tyrosine kinases form a small subfamily of receptor tyrosine kinases (RTKs), characterized by a conserved, unique domain architecture. ROR RTKs are evolutionary conserved throughout the animal kingdom and act as alternative receptors and coreceptors of WNT ligands. The intracellular signaling cascades activated downstream of ROR receptors are diverse, including but not limited to ROR-Frizzled-mediated activation of planar cell polarity signaling, RTK-like signaling, and antagonistic regulation of WNT/β-Catenin signaling. In line with their diverse repertoire of signaling functions, ROR receptors are involved in the regulation of multiple processes in embryonic development such as development of the axial and paraxial mesoderm, the nervous system and the neural crest, the axial and appendicular skeleton, and the kidney. In humans, mutations in the ROR2 gene cause two distinct developmental syndromes, recessive Robinow syndrome (RRS; MIM 268310) and dominant brachydactyly type B1 (BDB1; MIM 113000). In Robinow syndrome patients and animal models, the development of multiple organs is affected, whereas BDB1 results only in shortening of the distal phalanges of fingers and toes, reflecting the diversity of functions and signaling activities of ROR-family RTKs. In this chapter, we give an overview on ROR receptor structure and function. We discuss their signaling functions and role in vertebrate embryonic development with a focus on those developmental processes that are affected by mutations in the ROR2 gene in human patients.
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44
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Yang Y, Mlodzik M. Wnt-Frizzled/planar cell polarity signaling: cellular orientation by facing the wind (Wnt). Annu Rev Cell Dev Biol 2016; 31:623-46. [PMID: 26566118 DOI: 10.1146/annurev-cellbio-100814-125315] [Citation(s) in RCA: 254] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The establishment of planar cell polarity (PCP) in epithelial and mesenchymal cells is a critical, evolutionarily conserved process during development and organogenesis. Analyses in Drosophila and several vertebrate model organisms have contributed a wealth of information on the regulation of PCP. A key conserved pathway regulating PCP, the so-called core Wnt-Frizzled PCP (Fz/PCP) signaling pathway, was initially identified through genetic studies of Drosophila. PCP studies in vertebrates, most notably mouse and zebrafish, have identified novel factors in PCP signaling and have also defined cellular features requiring PCP signaling input. These studies have shifted focus to the role of Van Gogh (Vang)/Vangl genes in this molecular system. This review focuses on new insights into the core Fz/Vangl/PCP pathway and recent advances in Drosophila and vertebrate PCP studies. We attempt to integrate these within the existing core Fz/Vangl/PCP signaling framework.
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Affiliation(s)
- Yingzi Yang
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, Massachusetts 02115;
| | - Marek Mlodzik
- Department of Developmental and Regenerative Biology, Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029;
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45
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Samsa WE, Zhou X, Zhou G. Signaling pathways regulating cartilage growth plate formation and activity. Semin Cell Dev Biol 2016; 62:3-15. [PMID: 27418125 DOI: 10.1016/j.semcdb.2016.07.008] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 07/08/2016] [Indexed: 12/17/2022]
Abstract
The growth plate is a highly specialized and dynamic cartilage structure that serves many essential functions in skeleton patterning, growth and endochondral ossification in developing vertebrates. Major signaling pathways initiated by classical morphogens and by other systemic and tissue-specific factors are intimately involved in key aspects of growth plate development. As a corollary of these essential functions, disturbances in these pathways due to mutations or environmental factors lead to severe skeleton disorders. Here, we review these pathways and the most recent progress made in understanding their roles in chondrocyte differentiation in growth plate development and activity. Furthermore, we discuss newly uncovered pathways involved in growth plate formation, including mTOR, the circadian clock, and the COP9 signalosome.
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Affiliation(s)
- William E Samsa
- Department of Orthopaedics, Case Western Reserve University, Cleveland, OH, USA
| | - Xin Zhou
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Guang Zhou
- Department of Orthopaedics, Case Western Reserve University, Cleveland, OH, USA; Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, USA; Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH, USA.
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46
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Prein C, Warmbold N, Farkas Z, Schieker M, Aszodi A, Clausen-Schaumann H. Structural and mechanical properties of the proliferative zone of the developing murine growth plate cartilage assessed by atomic force microscopy. Matrix Biol 2016; 50:1-15. [DOI: 10.1016/j.matbio.2015.10.001] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 09/25/2015] [Accepted: 10/06/2015] [Indexed: 12/13/2022]
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47
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48
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Abstract
The regulation of organ size is essential to human health and has fascinated biologists for centuries. Key to the growth process is the ability of most organs to integrate organ-extrinsic cues (eg, nutritional status, inflammatory processes) with organ-intrinsic information (eg, genetic programs, local signals) into a growth response that adapts to changing environmental conditions and ensures that the size of an organ is coordinated with the rest of the body. Paired organs such as the vertebrate limbs and the long bones within them are excellent models for studying this type of regulation because it is possible to manipulate one member of the pair and leave the other as an internal control. During development, growth plates at the end of each long bone produce a transient cartilage model that is progressively replaced by bone. Here, we review how proliferation and differentiation of cells within each growth plate are tightly controlled mainly by growth plate-intrinsic mechanisms that are additionally modulated by extrinsic signals. We also discuss the involvement of several signaling hubs in the integration and modulation of growth-related signals and how they could confer remarkable plasticity to the growth plate. Indeed, long bones have a significant ability for "catch-up growth" to attain normal size after a transient growth delay. We propose that the characterization of catch-up growth, in light of recent advances in physiology and cell biology, will provide long sought clues into the molecular mechanisms that underlie organ growth regulation. Importantly, catch-up growth early in life is commonly associated with metabolic disorders in adulthood, and this association is not completely understood. Further elucidation of the molecules and cellular interactions that influence organ size coordination should allow development of novel therapies for human growth disorders that are noninvasive and have minimal side effects.
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Affiliation(s)
- Alberto Roselló-Díez
- Developmental Biology Program, Sloan Kettering Institute, New York, New York 10065
| | - Alexandra L Joyner
- Developmental Biology Program, Sloan Kettering Institute, New York, New York 10065
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49
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McCusker CD, Athippozhy A, Diaz-Castillo C, Fowlkes C, Gardiner DM, Voss SR. Positional plasticity in regenerating Amybstoma mexicanum limbs is associated with cell proliferation and pathways of cellular differentiation. BMC DEVELOPMENTAL BIOLOGY 2015; 15:45. [PMID: 26597593 PMCID: PMC4657325 DOI: 10.1186/s12861-015-0095-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 11/16/2015] [Indexed: 01/07/2023]
Abstract
Background The endogenous ability to dedifferentiate, re-pattern, and re-differentiate adult cells to repair or replace damaged or missing structures is exclusive to only a few tetrapod species. The Mexican axolotl is one example of these species, having the capacity to regenerate multiple adult structures including their limbs by generating a group of progenitor cells, known as the blastema, which acquire pattern and differentiate into the missing tissues. The formation of a limb regenerate is dependent on cells in the connective tissues that retain memory of their original position in the limb, and use this information to generate the pattern of the missing structure. Observations from recent and historic studies suggest that blastema cells vary in their potential to pattern distal structures during the regeneration process; some cells are plastic and can be reprogrammed to obtain new positional information while others are stable. Our previous studies showed that positional information has temporal and spatial components of variation; early bud (EB) and apical late bud (LB) blastema cells are plastic while basal-LB cells are stable. To identify the potential cellular and molecular basis of this variation, we compared these three cell populations using histological and transcriptional approaches. Results Histologically, the basal-LB sample showed greater tissue organization than the EB and apical-LB samples. We also observed that cell proliferation was more abundant in EB and apical-LB tissue when compared to basal-LB and mature stump tissue. Lastly, we found that genes associated with cellular differentiation were expressed more highly in the basal-LB samples. Conclusions Our results characterize histological and transcriptional differences between EB and apical-LB tissue compared to basal-LB tissue. Combined with our results from a previous study, we hypothesize that the stability of positional information is associated with tissue organization, cell proliferation, and pathways of cellular differentiation. Electronic supplementary material The online version of this article (doi:10.1186/s12861-015-0095-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | - Antony Athippozhy
- Department of Biology, Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, KY, 40506, USA.
| | - Carlos Diaz-Castillo
- Department of Developmental and Cellular Biology, University of California, Irvine, CA, 92602, USA.
| | - Charless Fowlkes
- Donald Bren School of Information and Computer Science, University of California, Irvine, CA, 92602, USA.
| | - David M Gardiner
- Department of Developmental and Cellular Biology, University of California, Irvine, CA, 92602, USA.
| | - S Randal Voss
- Department of Biology, Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, KY, 40506, USA.
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Geister KA, Brinkmeier ML, Cheung LY, Wendt J, Oatley MJ, Burgess DL, Kozloff KM, Cavalcoli JD, Oatley JM, Camper SA. LINE-1 Mediated Insertion into Poc1a (Protein of Centriole 1 A) Causes Growth Insufficiency and Male Infertility in Mice. PLoS Genet 2015; 11:e1005569. [PMID: 26496357 PMCID: PMC4619696 DOI: 10.1371/journal.pgen.1005569] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 09/15/2015] [Indexed: 11/19/2022] Open
Abstract
Skeletal dysplasias are a common, genetically heterogeneous cause of short stature that can result from disruptions in many cellular processes. We report the identification of the lesion responsible for skeletal dysplasia and male infertility in the spontaneous, recessive mouse mutant chagun. We determined that Poc1a, encoding protein of the centriole 1a, is disrupted by the insertion of a processed Cenpw cDNA, which is flanked by target site duplications, suggestive of a LINE-1 retrotransposon-mediated event. Mutant fibroblasts have impaired cilia formation and multipolar spindles. Male infertility is caused by defective spermatogenesis early in meiosis and progressive germ cell loss. Spermatogonial stem cell transplantation studies revealed that Poc1a is essential for normal function of both Sertoli cells and germ cells. The proliferative zone of the growth plate is small and disorganized because chondrocytes fail to re-align after cell division and undergo increased apoptosis. Poc1a and several other genes associated with centrosome function can affect the skeleton and lead to skeletal dysplasias and primordial dwarfisms. This mouse mutant reveals how centrosome dysfunction contributes to defects in skeletal growth and male infertility.
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Affiliation(s)
- Krista A. Geister
- Graduate Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Michelle L. Brinkmeier
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Leonard Y. Cheung
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Jennifer Wendt
- Roche NimbleGen, Inc., Research and Development, Madison, Wisconsin, United States of America
| | - Melissa J. Oatley
- School of Molecular Biosciences and Center for Reproductive Biology, Washington State University, Pullman, Washington, United States of America
| | - Daniel L. Burgess
- Roche NimbleGen, Inc., Research and Development, Madison, Wisconsin, United States of America
| | - Kenneth M. Kozloff
- Department of Orthopedic Surgery, University of Michigan, Ann Arbor, Michigan, United States of America
| | - James D. Cavalcoli
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Jon M. Oatley
- School of Molecular Biosciences and Center for Reproductive Biology, Washington State University, Pullman, Washington, United States of America
| | - Sally A. Camper
- Graduate Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, Michigan, United States of America
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan, United States of America
- * E-mail:
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