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Pitirri MK, Richtsmeier JT, Kawasaki M, Coupe AP, Perrine SM, Kawasaki K. Come together over me: Cells that form the dermatocranium and chondrocranium in mice. Anat Rec (Hoboken) 2023:10.1002/ar.25295. [PMID: 37497849 PMCID: PMC10818014 DOI: 10.1002/ar.25295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 06/30/2023] [Accepted: 07/03/2023] [Indexed: 07/28/2023]
Abstract
Most bone develops either by intramembranous ossification where bone forms within a soft connective tissue, or by endochondral ossification by way of a cartilage anlagen or model. Bones of the skull can form endochondrally or intramembranously or represent a combination of the two types of ossification. Contrary to the classical definition of intramembranous ossification, we have previously described a tight temporo-spatial relationship between cranial cartilages and dermal bone formation and proposed a mechanistic relationship between chondrocranial cartilage and dermal bone. Here, we further investigate this relationship through an analysis of how cells organize to form cranial cartilages and dermal bone. Using Wnt1-Cre2 and Mesp1-Cre transgenic mice, we determine the derivation of cells that comprise cranial cartilages from either cranial neural crest (CNC) or paraxial mesoderm (PM). We confirm a previously determined CNC-PM boundary that runs through the hypophyseal fenestra in the cartilaginous braincase floor and identify four additional CNC-PM boundaries in the chondrocranial lateral wall, including a boundary that runs along the basal and apical ends of the hypochiasmatic cartilage. Based on the knowledge that as osteoblasts differentiate from CNC- and PM-derived mesenchyme, the differentiating cells express the transcription factor genes RUNX2 and osterix (OSX), we created a new transgenic mouse line called R2Tom. R2Tom mice carry a tdTomato reporter gene joined with an evolutionarily well-conserved enhancer sequence of RUNX2. R2Tom mice crossed with Osx-GFP mice yield R2Tom;Osx-GFP double transgenic mice in which various stages of osteoblasts and their precursors are detected with different fluorescent reporters. We use the R2Tom;Osx-GFP mice, new data on the cell derivation of cranial cartilages, histology, immunohistochemistry, and detailed morphological observations combined with data from other investigators to summarize the differentiation of cranial mesenchyme as it forms condensations that become chondrocranial cartilages and associated dermal bones of the lateral cranial wall. These data advance our previous findings of a tendency of cranial cartilage and dermal bone development to vary jointly in a coordinated manner, promoting a role for cranial cartilages in intramembranous bone formation.
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Affiliation(s)
- M Kathleen Pitirri
- Department of Anthropology, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Joan T Richtsmeier
- Department of Anthropology, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Mizuho Kawasaki
- Department of Anthropology, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Abigail P Coupe
- Department of Anthropology, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Susan Motch Perrine
- Department of Anthropology, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Kazuhiko Kawasaki
- Department of Anthropology, The Pennsylvania State University, University Park, Pennsylvania, USA
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2
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Zhu Q, Ding L, Yue R. Skeletal stem cells: a game changer of skeletal biology and regenerative medicine? LIFE MEDICINE 2022; 1:294-306. [PMID: 36811113 PMCID: PMC9938637 DOI: 10.1093/lifemedi/lnac038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 09/13/2022] [Indexed: 11/12/2022]
Abstract
Skeletal stem cells (SSCs) were originally discovered in the bone marrow stroma. They are capable of self-renewal and multilineage differentiation into osteoblasts, chondrocytes, adipocytes, and stromal cells. Importantly, these bone marrow SSCs localize in the perivascular region and highly express hematopoietic growth factors to create the hematopoietic stem cell (HSC) niche. Thus, bone marrow SSCs play pivotal roles in orchestrating osteogenesis and hematopoiesis. Besides the bone marrow, recent studies have uncovered diverse SSC populations in the growth plate, perichondrium, periosteum, and calvarial suture at different developmental stages, which exhibit distinct differentiation potential under homeostatic and stress conditions. Therefore, the current consensus is that a panel of region-specific SSCs collaborate to regulate skeletal development, maintenance, and regeneration. Here, we will summarize recent advances of SSCs in long bones and calvaria, with a special emphasis on the evolving concept and methodology in the field. We will also look into the future of this fascinating research area that may ultimately lead to effective treatment of skeletal disorders.
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Affiliation(s)
- Qiaoling Zhu
- Institute for Regenerative Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Lei Ding
- Columbia Stem Cell Initiative, Department of Rehabilitation and Regenerative Medicine and Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA
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3
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de Almeida LGN, Thode H, Eslambolchi Y, Chopra S, Young D, Gill S, Devel L, Dufour A. Matrix Metalloproteinases: From Molecular Mechanisms to Physiology, Pathophysiology, and Pharmacology. Pharmacol Rev 2022; 74:712-768. [PMID: 35738680 DOI: 10.1124/pharmrev.121.000349] [Citation(s) in RCA: 91] [Impact Index Per Article: 45.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The first matrix metalloproteinase (MMP) was discovered in 1962 from the tail of a tadpole by its ability to degrade collagen. As their name suggests, matrix metalloproteinases are proteases capable of remodeling the extracellular matrix. More recently, MMPs have been demonstrated to play numerous additional biologic roles in cell signaling, immune regulation, and transcriptional control, all of which are unrelated to the degradation of the extracellular matrix. In this review, we will present milestones and major discoveries of MMP research, including various clinical trials for the use of MMP inhibitors. We will discuss the reasons behind the failures of most MMP inhibitors for the treatment of cancer and inflammatory diseases. There are still misconceptions about the pathophysiological roles of MMPs and the best strategies to inhibit their detrimental functions. This review aims to discuss MMPs in preclinical models and human pathologies. We will discuss new biochemical tools to track their proteolytic activity in vivo and ex vivo, in addition to future pharmacological alternatives to inhibit their detrimental functions in diseases. SIGNIFICANCE STATEMENT: Matrix metalloproteinases (MMPs) have been implicated in most inflammatory, autoimmune, cancers, and pathogen-mediated diseases. Initially overlooked, MMP contributions can be both beneficial and detrimental in disease progression and resolution. Thousands of MMP substrates have been suggested, and a few hundred have been validated. After more than 60 years of MMP research, there remain intriguing enigmas to solve regarding their biological functions in diseases.
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Affiliation(s)
- Luiz G N de Almeida
- Departments of Physiology and Pharmacology and Biochemistry and Molecular Biology, University of Calgary, Calgary, Canada (L.G.N.d.A., Y.E., S.C., D.Y., A.D.); Department of Physiology and Pharmacology, University of Western Ontario, London, Canada (S.G., H.T.); and Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Santé, Gif-sur-Yvette, France (L.D.)
| | - Hayley Thode
- Departments of Physiology and Pharmacology and Biochemistry and Molecular Biology, University of Calgary, Calgary, Canada (L.G.N.d.A., Y.E., S.C., D.Y., A.D.); Department of Physiology and Pharmacology, University of Western Ontario, London, Canada (S.G., H.T.); and Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Santé, Gif-sur-Yvette, France (L.D.)
| | - Yekta Eslambolchi
- Departments of Physiology and Pharmacology and Biochemistry and Molecular Biology, University of Calgary, Calgary, Canada (L.G.N.d.A., Y.E., S.C., D.Y., A.D.); Department of Physiology and Pharmacology, University of Western Ontario, London, Canada (S.G., H.T.); and Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Santé, Gif-sur-Yvette, France (L.D.)
| | - Sameeksha Chopra
- Departments of Physiology and Pharmacology and Biochemistry and Molecular Biology, University of Calgary, Calgary, Canada (L.G.N.d.A., Y.E., S.C., D.Y., A.D.); Department of Physiology and Pharmacology, University of Western Ontario, London, Canada (S.G., H.T.); and Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Santé, Gif-sur-Yvette, France (L.D.)
| | - Daniel Young
- Departments of Physiology and Pharmacology and Biochemistry and Molecular Biology, University of Calgary, Calgary, Canada (L.G.N.d.A., Y.E., S.C., D.Y., A.D.); Department of Physiology and Pharmacology, University of Western Ontario, London, Canada (S.G., H.T.); and Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Santé, Gif-sur-Yvette, France (L.D.)
| | - Sean Gill
- Departments of Physiology and Pharmacology and Biochemistry and Molecular Biology, University of Calgary, Calgary, Canada (L.G.N.d.A., Y.E., S.C., D.Y., A.D.); Department of Physiology and Pharmacology, University of Western Ontario, London, Canada (S.G., H.T.); and Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Santé, Gif-sur-Yvette, France (L.D.)
| | - Laurent Devel
- Departments of Physiology and Pharmacology and Biochemistry and Molecular Biology, University of Calgary, Calgary, Canada (L.G.N.d.A., Y.E., S.C., D.Y., A.D.); Department of Physiology and Pharmacology, University of Western Ontario, London, Canada (S.G., H.T.); and Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Santé, Gif-sur-Yvette, France (L.D.)
| | - Antoine Dufour
- Departments of Physiology and Pharmacology and Biochemistry and Molecular Biology, University of Calgary, Calgary, Canada (L.G.N.d.A., Y.E., S.C., D.Y., A.D.); Department of Physiology and Pharmacology, University of Western Ontario, London, Canada (S.G., H.T.); and Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Santé, Gif-sur-Yvette, France (L.D.)
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4
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Xu R, Liu Y, Zhou Y, Lin W, Yuan Q, Zhou X, Yang Y. Gnas Loss Causes Chondrocyte Fate Conversion in Cranial Suture Formation. J Dent Res 2022; 101:931-941. [PMID: 35220829 DOI: 10.1177/00220345221075215] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Calvaria development is distinct from limb formation. Craniosynostosis is a skull deformity characterized by premature cranial suture fusion due to the loss of the GNAS gene and, consequently, its encoded protein Gαs. This birth defect requires surgery, with potential lethal consequences. So far, hardly any early-stage nonsurgical interventions for GNAS loss-related craniosynostosis are available. Here, we investigated the role of the Gnas gene in mice in guarding the distinctiveness of intramembranous ossification and how loss of Gnas triggered endochondral-like ossification within the cranial sutures. Single-cell RNA sequencing (scRNA-seq) of normal neonatal mice cranial suture chondrocytes showed a Hedgehog (Hh) inactivation pattern, which was associated with Gαs signaling activation. Loss of Gnas evoked chondrocyte-to-osteoblast fate conversion and resulted in cartilage heterotopic ossification (HO) within cranial sutures and fontanels of the mouse model, leading to a skull deformity resembling craniosynostosis in patients with loss of GNAS. Activation of ectopic Hh signaling within cranial chondrocytes stimulated the conversion of cell identity through a hypertrophy-like stage, which shared features of endochondral ossification in vivo. Reduction of Gli transcription activity by crossing with a loss-of-function Gli2 allele or injecting GLI1/2 antagonist hindered the progression of cartilage HO in neonatal stage mice. Our study uncovered the role of Gαs in maintaining cranial chondrocyte identity during neonatal calvaria development in mice and how reduction of Hh signaling could be a nonsurgical intervention to reduce skull deformity in craniosynostosis due to loss of GNAS.
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Affiliation(s)
- R. Xu
- Department of Developmental Biology, Harvard School of Dental Medicine, Harvard Stem Cell Institute, Boston, MA, USA
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y. Liu
- Department of Developmental Biology, Harvard School of Dental Medicine, Harvard Stem Cell Institute, Boston, MA, USA
| | - Y. Zhou
- Department of Developmental Biology, Harvard School of Dental Medicine, Harvard Stem Cell Institute, Boston, MA, USA
| | - W. Lin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Q. Yuan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X. Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y. Yang
- Department of Developmental Biology, Harvard School of Dental Medicine, Harvard Stem Cell Institute, Boston, MA, USA
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5
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The Evolution of Biomineralization through the Co-Option of Organic Scaffold Forming Networks. Cells 2022; 11:cells11040595. [PMID: 35203246 PMCID: PMC8870065 DOI: 10.3390/cells11040595] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 12/05/2022] Open
Abstract
Biomineralization is the process in which organisms use minerals to generate hard structures like teeth, skeletons and shells. Biomineralization is proposed to have evolved independently in different phyla through the co-option of pre-existing developmental programs. Comparing the gene regulatory networks (GRNs) that drive biomineralization in different species could illuminate the molecular evolution of biomineralization. Skeletogenesis in the sea urchin embryo was extensively studied and the underlying GRN shows high conservation within echinoderms, larval and adult skeletogenesis. The organic scaffold in which the calcite skeletal elements form in echinoderms is a tubular compartment generated by the syncytial skeletogenic cells. This is strictly different than the organic cartilaginous scaffold that vertebrates mineralize with hydroxyapatite to make their bones. Here I compare the GRNs that drive biomineralization and tubulogenesis in echinoderms and in vertebrates. The GRN that drives skeletogenesis in the sea urchin embryo shows little similarity to the GRN that drives bone formation and high resemblance to the GRN that drives vertebrates’ vascular tubulogenesis. On the other hand, vertebrates’ bone-GRNs show high similarity to the GRNs that operate in the cells that generate the cartilage-like tissues of basal chordate and invertebrates that do not produce mineralized tissue. These comparisons suggest that biomineralization in deuterostomes evolved through the phylum specific co-option of GRNs that control distinct organic scaffolds to mineralization.
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Mizoguchi T, Ono N. The diverse origin of bone-forming osteoblasts. J Bone Miner Res 2021; 36:1432-1447. [PMID: 34213032 PMCID: PMC8338797 DOI: 10.1002/jbmr.4410] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 06/29/2021] [Accepted: 06/29/2021] [Indexed: 12/17/2022]
Abstract
Osteoblasts are the only cells that can give rise to bones in vertebrates. Thus, one of the most important functions of these metabolically active cells is mineralized matrix production. Because osteoblasts have a limited lifespan, they must be constantly replenished by preosteoblasts, their immediate precursors. Because disruption of the regulation of bone-forming osteoblasts results in a variety of bone diseases, a better understanding of the origin of these cells by defining the mechanisms of bone development, remodeling, and regeneration is central to the development of novel therapeutic approaches. In recent years, substantial new insights into the origin of osteoblasts-largely owing to rapid technological advances in murine lineage-tracing approaches and other single-cell technologies-have been obtained. Collectively, these findings indicate that osteoblasts involved in bone formation under various physiological, pathological, and therapeutic conditions can be obtained from numerous sources. The origins of osteoblasts include, but are not limited to, chondrocytes in the growth plate, stromal cells in the bone marrow, quiescent bone-lining cells on the bone surface, and specialized fibroblasts in the craniofacial structures, such as sutures and periodontal ligaments. Because osteoblasts can be generated from local cellular sources, bones can flexibly respond to regenerative and anabolic cues. However, whether osteoblasts derived from different cellular sources have distinct functions remains to be investigated. Currently, we are at the initial stage to aptly unravel the incredible diversity of the origins of bone-forming osteoblasts. © 2021 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
| | - Noriaki Ono
- University of Texas Health Science Center at Houston School of Dentistry, Houston, TX, USA
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7
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Xu Y, Zhang WX, Wang LN, Ming YQ, Li YL, Ni GX. Stem cell therapies in tendon-bone healing. World J Stem Cells 2021; 13:753-775. [PMID: 34367476 PMCID: PMC8316867 DOI: 10.4252/wjsc.v13.i7.753] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 05/08/2021] [Accepted: 06/23/2021] [Indexed: 02/06/2023] Open
Abstract
Tendon-bone insertion injuries such as rotator cuff and anterior cruciate ligament injuries are currently highly common and severe. The key method of treating this kind of injury is the reconstruction operation. The success of this reconstructive process depends on the ability of the graft to incorporate into the bone. Recently, there has been substantial discussion about how to enhance the integration of tendon and bone through biological methods. Stem cells like bone marrow mesenchymal stem cells (MSCs), tendon stem/progenitor cells, synovium-derived MSCs, adipose-derived stem cells, or periosteum-derived periosteal stem cells can self-regenerate and potentially differentiate into different cell types, which have been widely used in tissue repair and regeneration. Thus, we concentrate in this review on the current circumstances of tendon-bone healing using stem cell therapy.
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Affiliation(s)
- Yue Xu
- School of Sports Medicine and Rehabilitation, Beijing Sport University, Beijing 100084, China
| | - Wan-Xia Zhang
- School of Sports Medicine and Rehabilitation, Beijing Sport University, Beijing 100084, China
| | - Li-Na Wang
- School of Sports Medicine and Rehabilitation, Beijing Sport University, Beijing 100084, China
| | - Yue-Qing Ming
- School of Sports Medicine and Rehabilitation, Beijing Sport University, Beijing 100084, China
| | - Yu-Lin Li
- School of Sports Medicine and Rehabilitation, Beijing Sport University, Beijing 100084, China
| | - Guo-Xin Ni
- School of Sports Medicine and Rehabilitation, Beijing Sport University, Beijing 100084, China
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8
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Donsante S, Palmisano B, Serafini M, Robey PG, Corsi A, Riminucci M. From Stem Cells to Bone-Forming Cells. Int J Mol Sci 2021; 22:ijms22083989. [PMID: 33924333 PMCID: PMC8070464 DOI: 10.3390/ijms22083989] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/06/2021] [Accepted: 04/10/2021] [Indexed: 12/22/2022] Open
Abstract
Bone formation starts near the end of the embryonic stage of development and continues throughout life during bone modeling and growth, remodeling, and when needed, regeneration. Bone-forming cells, traditionally termed osteoblasts, produce, assemble, and control the mineralization of the type I collagen-enriched bone matrix while participating in the regulation of other cell processes, such as osteoclastogenesis, and metabolic activities, such as phosphate homeostasis. Osteoblasts are generated by different cohorts of skeletal stem cells that arise from different embryonic specifications, which operate in the pre-natal and/or adult skeleton under the control of multiple regulators. In this review, we briefly define the cellular identity and function of osteoblasts and discuss the main populations of osteoprogenitor cells identified to date. We also provide examples of long-known and recently recognized regulatory pathways and mechanisms involved in the specification of the osteogenic lineage, as assessed by studies on mice models and human genetic skeletal diseases.
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Affiliation(s)
- Samantha Donsante
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina 324, 00161 Rome, Italy; (S.D.); (B.P.); (A.C.)
- Centro Ricerca M. Tettamanti, Clinica Pediatrica, Università di Milano-Bicocca, Ospedale San Gerardo, 20900 Monza, Italy;
| | - Biagio Palmisano
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina 324, 00161 Rome, Italy; (S.D.); (B.P.); (A.C.)
| | - Marta Serafini
- Centro Ricerca M. Tettamanti, Clinica Pediatrica, Università di Milano-Bicocca, Ospedale San Gerardo, 20900 Monza, Italy;
| | - Pamela G. Robey
- Skeletal Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, USA;
| | - Alessandro Corsi
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina 324, 00161 Rome, Italy; (S.D.); (B.P.); (A.C.)
| | - Mara Riminucci
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina 324, 00161 Rome, Italy; (S.D.); (B.P.); (A.C.)
- Correspondence:
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9
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Blumer MJF. Bone tissue and histological and molecular events during development of the long bones. Ann Anat 2021; 235:151704. [PMID: 33600952 DOI: 10.1016/j.aanat.2021.151704] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 01/07/2021] [Accepted: 01/27/2021] [Indexed: 12/20/2022]
Abstract
The bones are of mesenchymal or ectomesenchymal origin, form the skeleton of most vertebrates, and are essential for locomotion and organ protection. As a living tissue they are highly vascularized and remodelled throughout life to maintain intact. Bones consist of osteocytes entrapped in a mineralized extracellular matrix, and via their elaborated network of cytoplasmic processes they do not only communicate with each other but also with the cells on the bone surface (bone lining cells). Bone tissue develops through a series of fine-tuned processes, and there are two modes of bone formation, referred to either as intramembranous or endochondral ossification. In intramembranous ossification, bones develop directly from condensations of mesenchymal cells, and the flat bones of the skull, the clavicles and the perichondral bone cuff develop via this process. The bones of the axial (ribs and vertebrae) and the appendicular skeleton (e.g. upper and lower limbs) form through endochondral ossification where mesenchyme turns into a cartilaginous intermediate with the shape of the future skeletal element that is gradually replaced by bone. Endochondral ossification occurs in all vertebrate taxa and its onset involves differentiation of the chondrocytes, mineralization of the extracellular cartilage matrix and vascularization of the intermediate, followed by disintegration and resorption of the cartilage, bone formation, and finally - after complete ossification of the cartilage model - the establishment of an avascular articular cartilage. The epiphyseal growth plate regulates the longitudinal growth of the bones, achieved by a balanced proliferation and elimination of chondrocytes, and the question whether the late hypertrophic chondrocytes die or transform into osteogenic cells is still being hotly debated. The complex processes leading to endochondral ossification have been studied for over a century, and this review aims to give an overview of the histological and molecular events, arising from the long bones' (e.g. femur, tibia) development. The fate of the hypertrophic chondrocytes will be discussed in the light of new findings obtained from cell tracking studies.
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Affiliation(s)
- Michael J F Blumer
- Department of Anatomy, Histology and Embryology, Institute of Clinical and Functional Anatomy, Medical University Innsbruck, Müllerstrasse 59, A-6010 Innsbruck, Austria.
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10
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Morgulis M, Winter MR, Shternhell L, Gildor T, Ben-Tabou de-Leon S. VEGF signaling activates the matrix metalloproteinases, MmpL7 and MmpL5 at the sites of active skeletal growth and MmpL7 regulates skeletal elongation. Dev Biol 2021; 473:80-89. [PMID: 33577829 DOI: 10.1016/j.ydbio.2021.01.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 12/20/2022]
Abstract
Organisms can uptake minerals, shape them in different forms and generate teeth, skeletons or shells that support and protect them. Mineral uptake, trafficking and nucleation are tightly regulated by the biomineralizing cells through networks of specialized proteins. Specifically, matrix metalloproteases (MMPs) digest various extracellular substrates and allow for mineralization in the vertebrates' teeth and bones, but little is known about their role in invertebrates' systems. The sea urchin embryo provides an excellent invertebrate model for genetic and molecular studies of biomineralization. MMP inhibition prevents the growth of the calcite spicules of the sea urchin larval skeleton, however, the molecular mechanisms and genes that underlie this response are not well understood. Here we study the spatial expression and regulation of two membrane type MMPs that were found to be occluded in the sea urchin spicules, Pl-MmpL7 and Pl-MmpL5, and investigate the function of Pl-MmpL7 in skeletogenesis. The inhibition of MMPs does not change the volume of the calcium vesicles in the skeletogenic cells. The expression of Pl-MmpL7 and Pl-MmpL5 is regulated by the Vascular Endothelial Growth Factor (VEGF) signaling, from the time of skeleton initiation and on. The expression of these genes is localized to the subsets of skeletogenic cells where active spicule growth occurs throughout skeletogenesis. Downregulation of Pl-MmpL7 expression delays the growth of the skeletal rods and in some cases, strongly perturbs skeletal shape. The localized expression of Pl-MmpL7 and Pl-MmpL5 to the active growth zone and the effect of Pl-MmpL7 perturbations on skeletal growth, suggest that these genes are essential for normal spicule elongation in the sea urchin embryo.
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Affiliation(s)
- Miri Morgulis
- Department of Marine Biology, Leon H. Charney School of Marine Sciences, University of Haifa, Haifa, 31905, Israel
| | - Mark R Winter
- Department of Marine Biology, Leon H. Charney School of Marine Sciences, University of Haifa, Haifa, 31905, Israel
| | - Ligal Shternhell
- Department of Marine Biology, Leon H. Charney School of Marine Sciences, University of Haifa, Haifa, 31905, Israel
| | - Tsvia Gildor
- Department of Marine Biology, Leon H. Charney School of Marine Sciences, University of Haifa, Haifa, 31905, Israel
| | - Smadar Ben-Tabou de-Leon
- Department of Marine Biology, Leon H. Charney School of Marine Sciences, University of Haifa, Haifa, 31905, Israel.
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11
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He J, Yan J, Wang J, Zhao L, Xin Q, Zeng Y, Sun Y, Zhang H, Bai Z, Li Z, Ni Y, Gong Y, Li Y, He H, Bian Z, Lan Y, Ma C, Bian L, Zhu H, Liu B, Yue R. Dissecting human embryonic skeletal stem cell ontogeny by single-cell transcriptomic and functional analyses. Cell Res 2021; 31:742-757. [PMID: 33473154 PMCID: PMC8249634 DOI: 10.1038/s41422-021-00467-z] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 12/22/2020] [Indexed: 01/15/2023] Open
Abstract
Human skeletal stem cells (SSCs) have been discovered in fetal and adult long bones. However, the spatiotemporal ontogeny of human embryonic SSCs during early skeletogenesis remains elusive. Here we map the transcriptional landscape of human limb buds and embryonic long bones at single-cell resolution to address this fundamental question. We found remarkable heterogeneity within human limb bud mesenchyme and epithelium, and aligned them along the proximal–distal and anterior–posterior axes using known marker genes. Osteo-chondrogenic progenitors first appeared in the core limb bud mesenchyme, which give rise to multiple populations of stem/progenitor cells in embryonic long bones undergoing endochondral ossification. Importantly, a perichondrial embryonic skeletal stem/progenitor cell (eSSPC) subset was identified, which could self-renew and generate the osteochondral lineage cells, but not adipocytes or hematopoietic stroma. eSSPCs are marked by the adhesion molecule CADM1 and highly enriched with FOXP1/2 transcriptional network. Interestingly, neural crest-derived cells with similar phenotypic markers and transcriptional networks were also found in the sagittal suture of human embryonic calvaria. Taken together, this study revealed the cellular heterogeneity and lineage hierarchy during human embryonic skeletogenesis, and identified distinct skeletal stem/progenitor cells that orchestrate endochondral and intramembranous ossification.
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Affiliation(s)
- Jian He
- State Key Laboratory of Proteomics, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing, 100071, China
| | - Jing Yan
- State Key Laboratory of Proteomics, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing, 100071, China
| | - Jianfang Wang
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Liangyu Zhao
- Department of Orthopedics, Changzheng Hospital, Naval Medical University, Shanghai, 200003, China
| | - Qian Xin
- State Key Laboratory of Proteomics, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing, 100071, China
| | - Yang Zeng
- State Key Laboratory of Experimental Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100071, China
| | - Yuxi Sun
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Han Zhang
- Department of Transfusion, Daping Hospital, Army Military Medical University, Chongqing, 400042, China
| | - Zhijie Bai
- State Key Laboratory of Proteomics, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing, 100071, China
| | - Zongcheng Li
- State Key Laboratory of Experimental Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100071, China
| | - Yanli Ni
- State Key Laboratory of Experimental Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100071, China
| | - Yandong Gong
- State Key Laboratory of Experimental Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100071, China
| | - Yunqiao Li
- State Key Laboratory of Proteomics, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing, 100071, China
| | - Han He
- State Key Laboratory of Proteomics, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing, 100071, China
| | - Zhilei Bian
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Yu Lan
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, Guangdong, 510632, China.,Guangzhou Regenerative Medicine and Health-Guangdong Laboratory (GRMH-GDL), Guangzhou, Guangdong, 510530, China
| | - Chunyu Ma
- Department of Gynecology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100071, China
| | - Lihong Bian
- Department of Gynecology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100071, China
| | - Heng Zhu
- Beijing Institute of Radiation Medicine, Beijing, 100850, China.
| | - Bing Liu
- State Key Laboratory of Proteomics, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing, 100071, China. .,State Key Laboratory of Experimental Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, 100071, China. .,Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, Guangdong, 510632, China.
| | - Rui Yue
- Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China.
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12
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Hardy E, Fernandez-Patron C. Destroy to Rebuild: The Connection Between Bone Tissue Remodeling and Matrix Metalloproteinases. Front Physiol 2020; 11:47. [PMID: 32116759 PMCID: PMC7013034 DOI: 10.3389/fphys.2020.00047] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 01/21/2020] [Indexed: 12/11/2022] Open
Abstract
Bone is a dynamic organ that undergoes constant remodeling, an energetically costly process by which old bone is replaced and localized bone defects are repaired to renew the skeleton over time, thereby maintaining skeletal health. This review provides a general overview of bone’s main players (bone lining cells, osteocytes, osteoclasts, reversal cells, and osteoblasts) that participate in bone remodeling. Placing emphasis on the family of extracellular matrix metalloproteinases (MMPs), we describe how: (i) Convergence of multiple protease families (including MMPs and cysteine proteinases) ensures complexity and robustness of the bone remodeling process, (ii) Enzymatic activity of MMPs affects bone physiology at the molecular and cellular levels and (iii) Either overexpression or deficiency/insufficiency of individual MMPs impairs healthy bone remodeling and systemic metabolism. Today, it is generally accepted that proteolytic activity is required for the degradation of bone tissue in osteoarthritis and osteoporosis. However, it is increasingly evident that inactivating mutations in MMP genes can also lead to bone pathology including osteolysis and metabolic abnormalities such as delayed growth. We argue that there remains a need to rethink the role played by proteases in bone physiology and pathology.
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Affiliation(s)
| | - Carlos Fernandez-Patron
- Department of Biochemistry, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB, Canada
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13
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Kumar GB, Nair BG, Perry JJP, Martin DBC. Recent insights into natural product inhibitors of matrix metalloproteinases. MEDCHEMCOMM 2019; 10:2024-2037. [PMID: 32904148 PMCID: PMC7451072 DOI: 10.1039/c9md00165d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 09/11/2019] [Indexed: 12/19/2022]
Abstract
Members of the matrix metalloproteinase (MMP) family have biological functions that are central to human health and disease, and MMP inhibitors have been investigated for the treatment of cardiovascular disease, cancer and neurodegenerative disorders. The outcomes of initial clinical trials with the first generation of MMP inhibitors proved disappointing. However, our growing understanding of the complexities of the MMP function in disease, and an increased understanding of MMP protein architecture and control of activity now provide new opportunities and avenues to develop MMP-focused therapies. Natural products that affect MMP activities have been of strong interest as templates for drug discovery, and for their use as chemical tools to help delineate the roles of MMPs that still remain to be defined. Herein, we highlight the most recent discoveries of structurally diverse natural product inhibitors to these proteases.
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Affiliation(s)
- Geetha B Kumar
- School of Biotechnology , Amrita University , Kollam , Kerala , India
| | - Bipin G Nair
- School of Biotechnology , Amrita University , Kollam , Kerala , India
| | - J Jefferson P Perry
- School of Biotechnology , Amrita University , Kollam , Kerala , India
- Department of Biochemistry , University of California , Riverside , CA 92521 , USA .
| | - David B C Martin
- Department of Chemistry , University of California , Riverside , CA 92521 , USA
- Department of Chemistry , University of Iowa , Iowa City , IA 52242 , USA .
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14
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de Vos IJHM, Wong ASW, Welting TJM, Coull BJ, van Steensel MAM. Multicentric osteolytic syndromes represent a phenotypic spectrum defined by defective collagen remodeling. Am J Med Genet A 2019; 179:1652-1664. [PMID: 31218820 DOI: 10.1002/ajmg.a.61264] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 04/15/2019] [Accepted: 05/13/2019] [Indexed: 02/06/2023]
Abstract
Frank-Ter Haar syndrome (FTHS), Winchester syndrome (WS), and multicentric osteolysis, nodulosis, and arthropathy (MONA) are ultra-rare multisystem disorders characterized by craniofacial malformations, reduced bone density, skeletal and cardiac anomalies, and dermal fibrosis. These autosomal recessive syndromes are caused by homozygous mutation or deletion of respectively SH3PXD2B (SH3 and PX Domains 2B), MMP14 (matrix metalloproteinase 14), or MMP2. Here, we give an overview of the clinical features of 63 previously reported patients with an SH3PXD2B, MMP14, or MMP2 mutation, demonstrating considerable clinical overlap between FTHS, WS, and MONA. Interestingly, the protein products of SH3PXD2B, MMP14, and MMP2 directly cooperate in collagen remodeling. We review animal models for these three disorders that accurately reflect the major clinical features and likewise show significant phenotypical similarity with each other. Furthermore, they demonstrate that defective collagen remodeling is central in the underlying pathology. As such, we propose a nosological revision, placing these SH3PXD2B, MMP14, and MMP2 related syndromes in a novel "defective collagen-remodelling spectrum (DECORS)". In our opinion, this revised nosology better reflects the central role for impaired collagen remodeling, a potential target for pharmaceutical intervention.
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Affiliation(s)
- Ivo J H M de Vos
- Skin Research Institute of Singapore, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Arnette Shi Wei Wong
- Skin Research Institute of Singapore, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Tim J M Welting
- Department of Orthopedic Surgery, Maastricht University Medical Center+, Maastricht, the Netherlands.,School for Public Health and Primary Care (CAPHRI), Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Barry J Coull
- Lancaster Medical School, Faculty of Health and Medicine, Lancaster University, Lancaster, UK
| | - Maurice A M van Steensel
- Skin Research Institute of Singapore, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore.,Lee Kong Chian School of Medicine, Nanyang Technological University (NTU), Singapore, Singapore
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15
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Abstract
PURPOSE OF REVIEW The goal of the review is to summarize the current knowledge on the process of chondrocyte-to-osteoblast transdifferentiation during endochondral bone formation and its potential implications in fracture healing and disease. RECENT FINDINGS Lineage tracing experiments confirmed the transdifferentiation of chondrocytes into osteoblasts. More recent studies lead to the discovery of molecules involved in this process, as well as to the hypothesis that these cells may re-enter a stem cell-like phase prior to their osteoblastic differentiation. This review recapitulates the current knowledge regarding chondrocyte transdifferentiating into osteoblasts, the developmental and postnatal events where transdifferentiation appears to be relevant, and the molecules implicated in this process.
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Affiliation(s)
- Lena Ingeborg Wolff
- Institute of Musculoskeletal Medicine, Department of Bone and Skeletal Research, Medical Faculty of the Westphalian Wilhelms University Münster, Munster, Germany
| | - Christine Hartmann
- Institute of Musculoskeletal Medicine, Department of Bone and Skeletal Research, Medical Faculty of the Westphalian Wilhelms University Münster, Munster, Germany.
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16
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de Vos IJHM, Tao EY, Ong SLM, Goggi JL, Scerri T, Wilson GR, Low CGM, Wong ASW, Grussu D, Stegmann APA, van Geel M, Janssen R, Amor DJ, Bahlo M, Dunn NR, Carney TJ, Lockhart PJ, Coull BJ, van Steensel MAM. Functional analysis of a hypomorphic allele shows that MMP14 catalytic activity is the prime determinant of the Winchester syndrome phenotype. Hum Mol Genet 2019; 27:2775-2788. [PMID: 29741626 PMCID: PMC6077784 DOI: 10.1093/hmg/ddy168] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 05/01/2018] [Indexed: 12/23/2022] Open
Abstract
Winchester syndrome (WS, MIM #277950) is an extremely rare autosomal recessive skeletal dysplasia characterized by progressive joint destruction and osteolysis. To date, only one missense mutation in MMP14, encoding the membrane-bound matrix metalloprotease 14, has been reported in WS patients. Here, we report a novel hypomorphic MMP14 p.Arg111His (R111H) allele, associated with a mitigated form of WS. Functional analysis demonstrated that this mutation, in contrast to previously reported human and murine MMP14 mutations, does not affect MMP14’s transport to the cell membrane. Instead, it partially impairs MMP14’s proteolytic activity. This residual activity likely accounts for the mitigated phenotype observed in our patients. Based on our observations as well as previously published data, we hypothesize that MMP14’s catalytic activity is the prime determinant of disease severity. Given the limitations of our in vitro assays in addressing the consequences of MMP14 dysfunction, we generated a novel mmp14a/b knockout zebrafish model. The fish accurately reflected key aspects of the WS phenotype including craniofacial malformations, kyphosis, short-stature and reduced bone density owing to defective collagen remodeling. Notably, the zebrafish model will be a valuable tool for developing novel therapeutic approaches to a devastating bone disorder.
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Affiliation(s)
- Ivo J H M de Vos
- Institute of Medical Biology (IMB), Agency for Science, Technology and Research (A*STAR), Singapore 138648, Singapore.,Department of Dermatology, Maastricht University Medical Center+, Maastricht 6202 AZ, The Netherlands.,School for Oncology and Developmental Biology (GROW), Maastricht University Medical Center+, Maastricht 6200 MD, The Netherlands
| | - Evelyn Yaqiong Tao
- Institute of Medical Biology (IMB), Agency for Science, Technology and Research (A*STAR), Singapore 138648, Singapore
| | - Sheena Li Ming Ong
- Institute of Medical Biology (IMB), Agency for Science, Technology and Research (A*STAR), Singapore 138648, Singapore
| | - Julian L Goggi
- Singapore Bioimaging Consortium (SBIC), Agency for Science, Technology and Research (A*STAR), Singapore 138667, Singapore.,Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore (NUS), Singapore 117593, Singapore
| | - Thomas Scerri
- Population Health and Immunity Division, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville 3052, Australia
| | - Gabrielle R Wilson
- Bruce Lefroy Centre for Genetic Health Research, Murdoch Children's Research Institute, Parkville 3052, Australia.,Department of Paediatrics, The University of Melbourne, Parkville 3052, Australia
| | - Chernis Guai Mun Low
- Institute of Medical Biology (IMB), Agency for Science, Technology and Research (A*STAR), Singapore 138648, Singapore
| | - Arnette Shi Wei Wong
- Institute of Medical Biology (IMB), Agency for Science, Technology and Research (A*STAR), Singapore 138648, Singapore
| | - Dominic Grussu
- Division of Cancer Research, School of Medicine, University of Dundee, Dundee DD1 9SY, UK
| | - Alexander P A Stegmann
- School for Oncology and Developmental Biology (GROW), Maastricht University Medical Center+, Maastricht 6200 MD, The Netherlands.,Department of Clinical Genetics, Maastricht University Medical Center+, Maastricht 6229 HX, The Netherlands
| | - Michel van Geel
- Department of Dermatology, Maastricht University Medical Center+, Maastricht 6202 AZ, The Netherlands.,School for Oncology and Developmental Biology (GROW), Maastricht University Medical Center+, Maastricht 6200 MD, The Netherlands.,Department of Clinical Genetics, Maastricht University Medical Center+, Maastricht 6229 HX, The Netherlands
| | - Renske Janssen
- Department of Dermatology, Maastricht University Medical Center+, Maastricht 6202 AZ, The Netherlands.,School for Oncology and Developmental Biology (GROW), Maastricht University Medical Center+, Maastricht 6200 MD, The Netherlands
| | - David J Amor
- Bruce Lefroy Centre for Genetic Health Research, Murdoch Children's Research Institute, Parkville 3052, Australia.,Department of Paediatrics, The University of Melbourne, Parkville 3052, Australia
| | - Melanie Bahlo
- Population Health and Immunity Division, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville 3052, Australia
| | - Norris R Dunn
- Institute of Medical Biology (IMB), Agency for Science, Technology and Research (A*STAR), Singapore 138648, Singapore.,Lee Kong Chian School of Medicine, Nanyang Technological University (NTU), Singapore 636921, Singapore
| | - Thomas J Carney
- Lee Kong Chian School of Medicine, Nanyang Technological University (NTU), Singapore 636921, Singapore.,Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), Singapore 138673, Singapore
| | - Paul J Lockhart
- Bruce Lefroy Centre for Genetic Health Research, Murdoch Children's Research Institute, Parkville 3052, Australia.,Department of Paediatrics, The University of Melbourne, Parkville 3052, Australia
| | - Barry J Coull
- Division of Cancer Research, School of Medicine, University of Dundee, Dundee DD1 9SY, UK
| | - Maurice A M van Steensel
- Institute of Medical Biology (IMB), Agency for Science, Technology and Research (A*STAR), Singapore 138648, Singapore.,Division of Cancer Research, School of Medicine, University of Dundee, Dundee DD1 9SY, UK.,Lee Kong Chian School of Medicine, Nanyang Technological University (NTU), Singapore 636921, Singapore
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17
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Nakagawa Y, Lebaschi AH, Wada S, E. Green SJ, Wang D, Album ZM, Carballo CB, Deng XH, Rodeo SA. Duration of postoperative immobilization affects MMP activity at the healing graft-bone interface: Evaluation in a mouse ACL reconstruction model. J Orthop Res 2019; 37:325-334. [PMID: 30431170 PMCID: PMC6411439 DOI: 10.1002/jor.24177] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 10/22/2018] [Indexed: 02/04/2023]
Abstract
Excessive MMP activity may impair tendon-to-bone healing. However, little is known about the effect of joint motion on MMP activity after ACL reconstruction. The aim of this study was to determine the effect of different durations of knee immobilization on MMP activity in a mouse ACL reconstruction model using a fluorescent MMP probe which detects MMP 2, 3, 9, and 13 and near-infra red in vivo imaging. Sixty C57BL male mice underwent ACL reconstruction. Post-operatively, the animals were treated with free cage activity (Group 1), or with the use of an external fixator to restrict knee motion and weight bearing for 5 days (Group 2), 14 days (Group 3), and 28 days (Group 4). At days 3, 7, 16, 23, and 30, five mice underwent IVIS imaging. At days 3, 7, 16, and 30, histological analysis was also performed. Probe signal intensity in the whole limb peaked at day 7, followed by a decrease at day 16, and maintenance up to day 30. There was no significant difference among groups at any time point based on IVIS, but histologic localization of MMP probe signal showed significantly less activity in Group 2 and Group 3 compared to Group 4 in the bone tunnel at day 30. We demonstrated that short-term immobilization led to less MMP activity around the bone tunnel compared with prolonged immobilization. A short period of immobilization after ACL reconstruction might enhance graft-bone interface healing by mitigating excess MMP expression. These findings have implications for post-operative rehabilitation protocols following ACL reconstruction. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 37:325-334, 2019.
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Affiliation(s)
- Yusuke Nakagawa
- Laboratory for Joint Tissue Repair and Regeneration, Orthopaedic Soft Tissue Research, Hospital for Special Surgery, 535 East 70th Street, New York 10021, New York,Department of Cartilage Regeneration, Tokyo Medical and Dental University, Tokyo, Japan
| | - Amir H. Lebaschi
- Laboratory for Joint Tissue Repair and Regeneration, Orthopaedic Soft Tissue Research, Hospital for Special Surgery, 535 East 70th Street, New York 10021, New York
| | - Susumu Wada
- Laboratory for Joint Tissue Repair and Regeneration, Orthopaedic Soft Tissue Research, Hospital for Special Surgery, 535 East 70th Street, New York 10021, New York
| | - Samuel J E. Green
- Laboratory for Joint Tissue Repair and Regeneration, Orthopaedic Soft Tissue Research, Hospital for Special Surgery, 535 East 70th Street, New York 10021, New York
| | - Dean Wang
- Laboratory for Joint Tissue Repair and Regeneration, Orthopaedic Soft Tissue Research, Hospital for Special Surgery, 535 East 70th Street, New York 10021, New York
| | - Zoe M. Album
- Laboratory for Joint Tissue Repair and Regeneration, Orthopaedic Soft Tissue Research, Hospital for Special Surgery, 535 East 70th Street, New York 10021, New York
| | - Camilla B. Carballo
- Laboratory for Joint Tissue Repair and Regeneration, Orthopaedic Soft Tissue Research, Hospital for Special Surgery, 535 East 70th Street, New York 10021, New York
| | - Xiang-Hua Deng
- Laboratory for Joint Tissue Repair and Regeneration, Orthopaedic Soft Tissue Research, Hospital for Special Surgery, 535 East 70th Street, New York 10021, New York
| | - Scott A. Rodeo
- Laboratory for Joint Tissue Repair and Regeneration, Orthopaedic Soft Tissue Research, Hospital for Special Surgery, 535 East 70th Street, New York 10021, New York
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18
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Xu R, Khan SK, Zhou T, Gao B, Zhou Y, Zhou X, Yang Y. Gα s signaling controls intramembranous ossification during cranial bone development by regulating both Hedgehog and Wnt/β-catenin signaling. Bone Res 2018; 6:33. [PMID: 30479847 PMCID: PMC6242855 DOI: 10.1038/s41413-018-0034-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 09/11/2018] [Accepted: 09/27/2018] [Indexed: 02/05/2023] Open
Abstract
How osteoblast cells are induced is a central question for understanding skeletal formation. Abnormal osteoblast differentiation leads to a broad range of devastating craniofacial diseases. Here we have investigated intramembranous ossification during cranial bone development in mouse models of skeletal genetic diseases that exhibit craniofacial bone defects. The GNAS gene encodes Gαs that transduces GPCR signaling. GNAS activation or loss-of-function mutations in humans cause fibrous dysplasia (FD) or progressive osseous heteroplasia (POH) that shows craniofacial hyperostosis or craniosynostosis, respectively. We find here that, while Hh ligand-dependent Hh signaling is essential for endochondral ossification, it is dispensable for intramembranous ossification, where Gαs regulates Hh signaling in a ligand-independent manner. We further show that Gαs controls intramembranous ossification by regulating both Hh and Wnt/β-catenin signaling. In addition, Gαs activation in the developing cranial bone leads to reduced ossification but increased cartilage presence due to reduced cartilage dissolution, not cell fate switch. Small molecule inhibitors of Hh and Wnt signaling can effectively ameliorate cranial bone phenotypes in mice caused by loss or gain of Gnas function mutations, respectively. Our work shows that studies of genetic diseases provide invaluable insights in both pathological bone defects and normal bone development, understanding both leads to better diagnosis and therapeutic treatment of bone diseases.
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Affiliation(s)
- Ruoshi Xu
- 1Department of Developmental Biology, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA USA.,2State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Sanjoy Kumar Khan
- 1Department of Developmental Biology, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA USA
| | - Taifeng Zhou
- 1Department of Developmental Biology, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA USA.,3Department of Orthopaedic Surgery, Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Bo Gao
- 1Department of Developmental Biology, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA USA.,4Department of Spine Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yaxing Zhou
- 1Department of Developmental Biology, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA USA
| | - Xuedong Zhou
- 2State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yingzi Yang
- 1Department of Developmental Biology, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA USA
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19
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Sakagami N, Ono W, Ono N. Diverse contribution of Col2a1-expressing cells to the craniofacial skeletal cell lineages. Orthod Craniofac Res 2018. [PMID: 28643905 DOI: 10.1111/ocr.12168] [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: 01/16/2023]
Abstract
OBJECTIVES Craniofacial skeletal development requires deliberate coordination of two distinct mechanisms of endochondral and intramembranous ossification. Col2a1-expressing cells encompass growth-associated skeletal progenitors in endochondral bones of the limb. The objective of this study was to determine the contribution of Col2a1-expressing cells to the craniofacial skeletal cell lineages. We hypothesize that Col2a1-expressing progenitors significantly contribute to various modes of ossification associated with the craniofacial development. METHODS Cellular fates of Col2a1-expressing cells were studied based on a cre-loxP system using a Col2a1-cre transgene and an R26R-tdTomato reporter allele. We analysed three distinct locations of the craniofacial skeletal complex representing unique ossification mechanisms: the cranial base, the calvaria and the mandibular condyle. RESULTS Col2a1-cre consistently marked a majority of skeletal cells in the cranial base. Interestingly, Col2a1-cre also marked a large number of osteoblasts and suture mesenchymal cells in the calvaria, in addition to chondrocytes in the underlying transient cartilage. In the mandibular condyle, Col2a1-cre marked chondrocytes and osteoblasts only during the growth phase. CONCLUSIONS Col2a1 is expressed by progenitors of the skeletal lineage in canonical endochondral bone formation occurring in the cranial base. In contrast, other ossification mechanisms of the craniofacial complex utilize Col2a1-expressing cells in a different manner, whereby Col2a1 may be expressed in more differentiated or transient cell types of the skeletal lineage.
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Affiliation(s)
- N Sakagami
- Department of Orthodontics and Pediatric Dentistry, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - W Ono
- Department of Orthodontics and Pediatric Dentistry, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - N Ono
- Department of Orthodontics and Pediatric Dentistry, University of Michigan School of Dentistry, Ann Arbor, MI, USA
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20
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Sakr M, Li XY, Sabeh F, Feinberg TY, Tesmer JJG, Tang Y, Weiss SJ. Tracking the Cartoon mouse phenotype: Hemopexin domain-dependent regulation of MT1-MMP pericellular collagenolytic activity. J Biol Chem 2018; 293:8113-8127. [PMID: 29643184 DOI: 10.1074/jbc.ra117.001503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 03/23/2018] [Indexed: 11/06/2022] Open
Abstract
Following ENU mutagenesis, a phenodeviant line was generated, termed the "Cartoon mouse," that exhibits profound defects in growth and development. Cartoon mice harbor a single S466P point mutation in the MT1-MMP hemopexin domain, a 200-amino acid segment that is thought to play a critical role in regulating MT1-MMP collagenolytic activity. Herein, we demonstrate that the MT1-MMPS466P mutation replicates the phenotypic status of Mt1-mmp-null animals as well as the functional characteristics of MT1-MMP-/- cells. However, rather than a loss-of-function mutation acquired as a consequence of defects in MT1-MMP proteolytic activity, the S466P substitution generates a misfolded, temperature-sensitive mutant that is abnormally retained in the endoplasmic reticulum (ER). By contrast, the WT hemopexin domain does not play a required role in regulating MT1-MMP trafficking, as a hemopexin domain-deletion mutant is successfully mobilized to the cell surface and displays nearly normal collagenolytic activity. Alternatively, when MT1-MMPS466P-expressing cells are cultured at a permissive temperature of 25 °C that depresses misfolding, the mutant successfully traffics from the ER to the trans-Golgi network (ER → trans-Golgi network), where it undergoes processing to its mature form, mobilizes to the cell surface, and expresses type I collagenolytic activity. Together, these analyses define the Cartoon mouse as an unexpected gain-of-abnormal function mutation, wherein the temperature-sensitive mutant phenocopies MT1-MMP-/- mice as a consequence of eliciting a specific ER → trans-Golgi network trafficking defect.
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Affiliation(s)
- Moustafa Sakr
- Molecular Diagnostics and Therapeutics Department, Genetic Engineering and Biotechnology Research institute (GEBRI), University of Sadat City, Sadat City, Egypt 32897
| | - Xiao-Yan Li
- Division of Molecular Medicine and Genetics, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109; Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109
| | - Farideh Sabeh
- Division of Molecular Medicine and Genetics, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109; Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109
| | - Tamar Y Feinberg
- Division of Molecular Medicine and Genetics, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109; Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109
| | - John J G Tesmer
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109; Departments of Medicinal Chemistry, Pharmacology, and Biological Chemistry, University of Michigan, Ann Arbor, Michigan 48109
| | - Yi Tang
- Division of Molecular Medicine and Genetics, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109; Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109
| | - Stephen J Weiss
- Division of Molecular Medicine and Genetics, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109; Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109; Departments of Medicinal Chemistry, Pharmacology, and Biological Chemistry, University of Michigan, Ann Arbor, Michigan 48109.
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21
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Lebaschi AH, Deng XH, Camp CL, Zong J, Cong GT, Carballo CB, Album Z, Rodeo SA. Biomechanical, Histologic, and Molecular Evaluation of Tendon Healing in a New Murine Model of Rotator Cuff Repair. Arthroscopy 2018; 34:1173-1183. [PMID: 29459078 PMCID: PMC6340398 DOI: 10.1016/j.arthro.2017.10.045] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 10/22/2017] [Accepted: 10/24/2017] [Indexed: 02/02/2023]
Abstract
PURPOSE To develop a clinically relevant, robust murine model of rotator cuff tendon repair to examine cellular and molecular mechanisms of healing. METHODS Sixty C57BL/6 male mice underwent rotator cuff transection and repair using microsurgical techniques. A modified Kessler suturing technique was used prior to tendon detachment. Sutures were passed through 2 intersecting bone tunnels that were made at the tendon attachment site. Mice were sacrificed at 2 and 4 weeks with subsequent biomechanical, histologic, micro-CT, and gene expression evaluations. RESULTS Failure forces in the 2- and 4-week groups were 36% and 75% of the intact tendon, respectively. Histologic evaluation revealed complete reattachment of the tendon with no observable gap. Healing occurred by formation of fibrovascular tissue at the tendon-bone interface, similar to larger animal models. Molecular analysis revealed gene expression consistent with gradual healing of the reattached tendon over a period of 4 weeks. Comparisons were made using 1-way analysis of variance. CONCLUSIONS This model is distinguished by use of microsurgical suturing techniques, which provides a robust, reproducible, and economic animal model to study various aspects of rotator cuff pathology. CLINICAL RELEVANCE Improvement of clinical outcomes of rotator cuff pathology requires in-depth understanding of the underlying cellular and molecular mechanisms of healing. This study presents a robust murine model of supraspinatus repair to serve as a standard research tool for basic and translational investigations into signaling pathways, gene expression, and the effect of biologic augmentation approaches.
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He F, Soriano P. Dysregulated PDGFRα signaling alters coronal suture morphogenesis and leads to craniosynostosis through endochondral ossification. Development 2017; 144:4026-4036. [PMID: 28947535 DOI: 10.1242/dev.151068] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 09/15/2017] [Indexed: 01/02/2023]
Abstract
Craniosynostosis is a prevalent human birth defect characterized by premature fusion of calvarial bones. In this study, we show that tight regulation of endogenous PDGFRα activity is required for normal calvarium development in the mouse and that dysregulated PDGFRα activity causes craniosynostosis. Constitutive activation of PDGFRα leads to expansion of cartilage underlying the coronal sutures, which contribute to suture closure through endochondral ossification, in a process regulated in part by PI3K/AKT signaling. Our results thus identify a novel mechanism underlying calvarial development in craniosynostosis.
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Affiliation(s)
- Fenglei He
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.,Department of Cell and Molecular Biology, Tulane University, New Orleans, LA 70118, USA
| | - Philippe Soriano
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
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23
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Santos-Ledo A, Garcia-Macia M, Campbell PD, Gronska M, Marlow FL. Kinesin-1 promotes chondrocyte maintenance during skeletal morphogenesis. PLoS Genet 2017; 13:e1006918. [PMID: 28715414 PMCID: PMC5536392 DOI: 10.1371/journal.pgen.1006918] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 07/31/2017] [Accepted: 07/11/2017] [Indexed: 01/03/2023] Open
Abstract
During skeletal morphogenesis diverse mechanisms are used to support bone formation. This can be seen in the bones that require a cartilage template for their development. In mammals the cartilage template is removed, but in zebrafish the cartilage template persists and the bone mineralizes around the cartilage scaffold. Remodeling of unmineralized cartilage occurs via planar cell polarity (PCP) mediated cell rearrangements that contribute to lengthening of elements; however, the mechanisms that maintain the chondrocyte template that supports perichondral ossification remain unclear. We report double mutants disrupting two zebrafish kinesin-I genes (hereafter kif5Blof) that we generated using CRISPR/Cas9 mutagenesis. We show that zygotic Kif5Bs have a conserved function in maintaining muscle integrity, and are required for cartilage remodeling and maintenance during craniofacial morphogenesis by a PCP-distinct mechanism. Further, kif5Blof does not activate ER stress response genes, but instead disrupts lysosomal function, matrix secretion, and causes deregulated autophagic markers and eventual chondrocyte apoptosis. Ultrastructural and transplantation analysis reveal neighboring cells engulfing extruded kif5Blof chondrocytes. Initial cartilage specification is intact; however, during remodeling, kif5Blof chondrocytes die and the cartilage matrix devoid of hypertrophic chondrocytes remains and impedes normal ossification. Chimeric and mosaic analyses indicate that Kif5B functions cell-autonomously in secretion, nuclear position, cell elongation and maintenance of hypertrophic chondrocytes. Interestingly, large groups of wild-type cells can support elongation of neighboring mutant cells. Finally, mosaic expression of kif5Ba, but not kif5Aa in cartilage rescues the chondrocyte phenotype, further supporting a specific requirement for Kif5B. Cumulatively, we show essential Kif5B functions in promoting cartilage remodeling and chondrocyte maintenance during zebrafish craniofacial morphogenesis.
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Affiliation(s)
- Adrian Santos-Ledo
- Department of Developmental and Molecular Biology. Albert Einstein College of Medicine, Bronx, New York, United States of America
- Institute of Genetic Medicine. Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - Marina Garcia-Macia
- Institute for Cellular and Molecular Biosciences. Newcastle University, Newcastle Upon Tyne, United Kingdom
- Institute of Cellular Medicine. Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - Philip D Campbell
- Department of Developmental and Molecular Biology. Albert Einstein College of Medicine, Bronx, New York, United States of America
| | - Marta Gronska
- Department of Neuroscience. Albert Einstein College of Medicine, Bronx, New York, United States of America
| | - Florence L Marlow
- Department of Developmental and Molecular Biology. Albert Einstein College of Medicine, Bronx, New York, United States of America
- Department of Neuroscience. Albert Einstein College of Medicine, Bronx, New York, United States of America
- Cell Developmental and Regenerative Biology Department. Icahn School of Medicine at Mount Sinai. New York, New York, United States of America
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24
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Paiva KBS, Granjeiro JM. Matrix Metalloproteinases in Bone Resorption, Remodeling, and Repair. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2017; 148:203-303. [PMID: 28662823 DOI: 10.1016/bs.pmbts.2017.05.001] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Matrix metalloproteinases (MMPs) are the major protease family responsible for the cleavage of the matrisome (global composition of the extracellular matrix (ECM) proteome) and proteins unrelated to the ECM, generating bioactive molecules. These proteins drive ECM remodeling, in association with tissue-specific and cell-anchored inhibitors (TIMPs and RECK, respectively). In the bone, the ECM mediates cell adhesion, mechanotransduction, nucleation of mineralization, and the immobilization of growth factors to protect them from damage or degradation. Since the first description of an MMP in bone tissue, many other MMPs have been identified, as well as their inhibitors. Numerous functions have been assigned to these proteins, including osteoblast/osteocyte differentiation, bone formation, solubilization of the osteoid during bone resorption, osteoclast recruitment and migration, and as a coupling factor in bone remodeling under physiological conditions. In turn, a number of pathologies, associated with imbalanced bone remodeling, arise mainly from MMP overexpression and abnormalities of the ECM, leading to bone osteolysis or bone formation. In this review, we will discuss the functions of MMPs and their inhibitors in bone cells, during bone remodeling, pathological bone resorption (osteoporosis and bone metastasis), bone repair/regeneration, and emergent roles in bone bioengineering.
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Affiliation(s)
- Katiucia B S Paiva
- Laboratory of Extracellular Matrix Biology and Cellular Interaction (LabMec), Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil.
| | - José M Granjeiro
- National Institute of Metrology, Quality and Technology (InMetro), Bioengineering Laboratory, Duque de Caxias, RJ, Brazil; Fluminense Federal University, Dental School, Niterói, RJ, Brazil
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25
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Cieplak P, Strongin AY. Matrix metalloproteinases - From the cleavage data to the prediction tools and beyond. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2017; 1864:1952-1963. [PMID: 28347746 DOI: 10.1016/j.bbamcr.2017.03.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 03/21/2017] [Accepted: 03/22/2017] [Indexed: 11/29/2022]
Abstract
Understanding the physiological role of any protease requires identification of both its cleavage substrates and their relative cleavage efficacy as compared with other substrates and other proteinases. Our review manuscript is focused on the cleavage preferences of the individual matrix metalloproteinases (MMPs) and the cleavage similarity and distinction that exist in the human MMP family. The recent in-depth analysis of MMPs by us and many others greatly increased knowledge of the MMP biology and structural-functional relationships among this protease family members. A better knowledge of cleavage preferences of MMPs has led us to the development of the prediction tools that are now capable of the high throughput reliable prediction and ranking the MMP cleavage sites in the peptide sequences in silico. Our software unifies and consolidates volumes of the pre-existing data. Now this prediction-ranking in silico tool is ready to be used by others. The software we developed may facilitate both the identification of the novel proteolytic regulatory pathways and the discovery of the previously uncharacterized substrates of the individual MMPs. Because now the MMP research may be based on the mathematical probability parameters rather than on either random luck or common sense alone, the researchers armed with this novel in silico tool will be better equipped to fine-tune or, at least, to sharply focus their wet chemistry experiments. This article is part of a Special Issue entitled: Matrix Metalloproteinases edited by Rafael Fridman.
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Affiliation(s)
- Piotr Cieplak
- Cancer Research Center, Sanford-Burnham Medical Research Institute, La Jolla, CA 92037, USA.
| | - Alex Y Strongin
- Cancer Research Center, Sanford-Burnham Medical Research Institute, La Jolla, CA 92037, USA.
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26
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Houben A, Kostanova-Poliakova D, Weissenböck M, Graf J, Teufel S, von der Mark K, Hartmann C. β-catenin activity in late hypertrophic chondrocytes locally orchestrates osteoblastogenesis and osteoclastogenesis. Development 2016; 143:3826-3838. [PMID: 27621061 PMCID: PMC5087647 DOI: 10.1242/dev.137489] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 08/24/2016] [Indexed: 12/21/2022]
Abstract
Trabecular bone formation is the last step in endochondral ossification. This remodeling process of cartilage into bone involves blood vessel invasion and removal of hypertrophic chondrocytes (HTCs) by chondroclasts and osteoclasts. Periosteal- and chondrocyte-derived osteoprogenitors utilize the leftover mineralized HTC matrix as a scaffold for primary spongiosa formation. Here, we show genetically that β-catenin (encoded by Ctnnb1), a key component of the canonical Wnt pathway, orchestrates this remodeling process at multiple levels. Conditional inactivation or stabilization of β-catenin in HTCs by a Col10a1-Cre line locally modulated osteoclastogenesis by altering the Rankl:Opg ratio in HTCs. Lack of β-catenin resulted in a severe decrease of trabecular bone in the embryonic long bones. Gain of β-catenin activity interfered with removal of late HTCs and bone marrow formation, leading to a continuous mineralized hypertrophic core in the embryo and resulting in an osteopetrotic-like phenotype in adult mice. Furthermore, β-catenin activity in late HTCs is required for chondrocyte-derived osteoblastogenesis at the chondro-osseous junction. The latter contributes to the severe trabecular bone phenotype in mutants lacking β-catenin activity in HTCs. Summary: The conditional modulation of β-catenin activity in late hypertrophic chondrocytes locally regulates osteoclast differentiation and the transdifferentiation of chondrocytes into osteoblasts.
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Affiliation(s)
- Astrid Houben
- Institute of Experimental Musculoskeletal Medicine, Medical Faculty of the University of Münster, Domagkstrasse 3, 48149 Münster, Germany
| | | | - Martina Weissenböck
- Research Institute of Molecular Pathology, Dr. Bohr-Gasse 7, A-1030 Vienna, Austria
| | - Julian Graf
- Institute of Experimental Musculoskeletal Medicine, Medical Faculty of the University of Münster, Domagkstrasse 3, 48149 Münster, Germany
| | - Stefan Teufel
- Institute of Experimental Musculoskeletal Medicine, Medical Faculty of the University of Münster, Domagkstrasse 3, 48149 Münster, Germany
| | - Klaus von der Mark
- Dept. of Experimental Medicine I, University of Erlangen-Nürnberg, Glückstrasse 6, 91054 Erlangen, Germany
| | - Christine Hartmann
- Institute of Experimental Musculoskeletal Medicine, Medical Faculty of the University of Münster, Domagkstrasse 3, 48149 Münster, Germany
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27
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Javaheri B, Hopkinson M, Poulet B, Pollard AS, Shefelbine SJ, Chang YM, Francis-West P, Bou-Gharios G, Pitsillides AA. Deficiency and Also Transgenic Overexpression of Timp-3 Both Lead to Compromised Bone Mass and Architecture In Vivo. PLoS One 2016; 11:e0159657. [PMID: 27519049 PMCID: PMC4982603 DOI: 10.1371/journal.pone.0159657] [Citation(s) in RCA: 17] [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: 01/29/2016] [Accepted: 07/05/2016] [Indexed: 11/25/2022] Open
Abstract
Tissue inhibitor of metalloproteinases-3 (TIMP-3) regulates extracellular matrix via its inhibition of matrix metalloproteinases and membrane-bound sheddases. Timp-3 is expressed at multiple sites of extensive tissue remodelling. This extends to bone where its role, however, remains largely unresolved. In this study, we have used Micro-CT to assess bone mass and architecture, histological and histochemical evaluation to characterise the skeletal phenotype of Timp-3 KO mice and have complemented this by also examining similar indices in mice harbouring a Timp-3 transgene driven via a Col-2a-driven promoter to specifically target overexpression to chondrocytes. Our data show that Timp-3 deficiency compromises tibial bone mass and structure in both cortical and trabecular compartments, with corresponding increases in osteoclasts. Transgenic overexpression also generates defects in tibial structure predominantly in the cortical bone along the entire shaft without significant increases in osteoclasts. These alterations in cortical mass significantly compromise predicted tibial load-bearing resistance to torsion in both genotypes. Neither Timp-3 KO nor transgenic mouse growth plates are significantly affected. The impact of Timp-3 deficiency and of transgenic overexpression extends to produce modification in craniofacial bones of both endochondral and intramembranous origins. These data indicate that the levels of Timp-3 are crucial in the attainment of functionally-appropriate bone mass and architecture and that this arises from chondrogenic and osteogenic lineages.
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Affiliation(s)
- Behzad Javaheri
- Department of Comparative Biomedical Sciences, The Royal Veterinary College, London, United Kingdom
- * E-mail:
| | - Mark Hopkinson
- Department of Comparative Biomedical Sciences, The Royal Veterinary College, London, United Kingdom
| | - Blandine Poulet
- Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, United Kingdom
| | - Andrea S. Pollard
- Department of Comparative Biomedical Sciences, The Royal Veterinary College, London, United Kingdom
| | - Sandra J. Shefelbine
- Department of Mechanical and Industrial Engineering, Northeastern University, Boston, Massachusetts, United States of America
| | - Yu-Mei Chang
- Department of Comparative Biomedical Sciences, The Royal Veterinary College, London, United Kingdom
| | - Philippa Francis-West
- Department of Craniofacial Development and Stem Cell Biology, King's College London, London, United Kingdom
| | - George Bou-Gharios
- Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, United Kingdom
| | - Andrew A. Pitsillides
- Department of Comparative Biomedical Sciences, The Royal Veterinary College, London, United Kingdom
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28
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Morris MLM, Baroneza JE, Teixeira P, Medina CTN, Cordoba MS, Versiani BR, Roese LL, Freitas EL, Fonseca ACS, Dos Santos MCG, Pic-Taylor A, Rosenberg C, Oliveira SF, Ferrari I, Mazzeu JF. Partial 1q Duplications and Associated Phenotype. Mol Syndromol 2016; 6:297-303. [PMID: 27022331 DOI: 10.1159/000443599] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2015] [Indexed: 11/19/2022] Open
Abstract
Duplications of the long arm of chromosome 1 are rare. Distal duplications are the most common and have been reported as either pure trisomy or unbalanced translocations. The paucity of cases with pure distal 1q duplications has made it difficult to delineate a partial distal trisomy 1q syndrome. Here, we report 2 patients with overlapping 1q duplications detected by G-banding. Array CGH and FISH were performed to characterize the duplicated segments, exclude the involvement of other chromosomes and determine the orientation of the duplication. Patient 1 presents with a mild phenotype and carries a 22.5-Mb 1q41q43 duplication. Patient 2 presents with a pure 1q42.13qter inverted duplication of 21.5 Mb, one of the smallest distal 1q duplications ever described and one of the few cases characterized by array CGH, thus contributing to a better characterization of distal 1q duplication syndrome.
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Affiliation(s)
| | - José E Baroneza
- Universidade Positivo, São Paulo, Brazil; Programa de Pós-graduação em Biologia Celular e Molecular, Universidade Federal do Paraná, Curitiba São Paulo, Brazil
| | | | - Cristina T N Medina
- Secretaria de Estado de Saúde do Distrito Federal, Brasilia, São Paulo, Brazil
| | - Mara S Cordoba
- Secretaria de Estado de Saúde do Distrito Federal, Brasilia, São Paulo, Brazil
| | - Beatriz R Versiani
- Secretaria de Estado de Saúde do Distrito Federal, Brasilia, São Paulo, Brazil
| | - Liege L Roese
- Rede Sarah de Hospitais de Reabilitação, Brasília, São Paulo, Brazil
| | - Erika L Freitas
- Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
| | - Ana C S Fonseca
- Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
| | - Maria C G Dos Santos
- Programa de Pós-graduação em Biologia Celular e Molecular, Universidade Federal do Paraná, Curitiba São Paulo, Brazil
| | - Aline Pic-Taylor
- Programa de Pós-graduação em Ciências da Saúde, São Paulo, Brazil; Departamento de Genética e Morfologia, Instituto de Ciências Biológicas, São Paulo, Brazil
| | - Carla Rosenberg
- Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
| | - Silviene F Oliveira
- Programa de Pós-graduação em Ciências da Saúde, São Paulo, Brazil; Departamento de Genética e Morfologia, Instituto de Ciências Biológicas, São Paulo, Brazil
| | - Iris Ferrari
- Faculdade de Medicina, Universidade de Brasília, São Paulo, Brazil
| | - Juliana F Mazzeu
- Programa de Pós-graduação em Ciências da Saúde, São Paulo, Brazil; Faculdade de Medicina, Universidade de Brasília, São Paulo, Brazil
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29
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Han S, Li YY, Chan BP. Extracellular Protease Inhibition Alters the Phenotype of Chondrogenically Differentiating Human Mesenchymal Stem Cells (MSCs) in 3D Collagen Microspheres. PLoS One 2016; 11:e0146928. [PMID: 26760956 PMCID: PMC4711899 DOI: 10.1371/journal.pone.0146928] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 12/22/2015] [Indexed: 11/18/2022] Open
Abstract
Matrix remodeling of cells is highly regulated by proteases and their inhibitors. Nevertheless, how would the chondrogenesis of mesenchymal stem cells (MSCs) be affected, when the balance of the matrix remodeling is disturbed by inhibiting matrix proteases, is incompletely known. Using a previously developed collagen microencapsulation platform, we investigated whether exposing chondrogenically differentiating MSCs to intracellular and extracellular protease inhibitors will affect the extracellular matrix remodeling and hence the outcomes of chondrogenesis. Results showed that inhibition of matrix proteases particularly the extracellular ones favors the phenotype of fibrocartilage rather than hyaline cartilage in chondrogenically differentiating hMSCs by upregulating type I collagen protein deposition and type II collagen gene expression without significantly altering the hypertrophic markers at gene level. This study suggests the potential of manipulating extracellular proteases to alter the outcomes of hMSC chondrogenesis, contributing to future development of differentiation protocols for fibrocartilage tissues for intervertebral disc and meniscus tissue engineering.
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Affiliation(s)
- Sejin Han
- Tissue Engineering Laboratory, Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong Special Administrative Region, China
| | - Yuk Yin Li
- Tissue Engineering Laboratory, Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong Special Administrative Region, China
| | - Barbara Pui Chan
- Tissue Engineering Laboratory, Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong Special Administrative Region, China
- * E-mail:
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30
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Abstract
Skeletal stem cells (SSCs) reside in the postnatal bone marrow and give rise to cartilage, bone, hematopoiesis-supportive stroma and marrow adipocytes in defined in vivo assays. These lineages emerge in a specific sequence during embryonic development and post natal growth, and together comprise a continuous anatomical system, the bone-bone marrow organ. SSCs conjoin skeletal and hematopoietic physiology, and are a tool for understanding and ameliorating skeletal and hematopoietic disorders. Here and in the accompanying poster, we concisely discuss the biology of SSCs in the context of the development and postnatal physiology of skeletal lineages, to which their use in medicine must remain anchored.
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Affiliation(s)
- Paolo Bianco
- Department of Molecular Medicine, Sapienza University of Rome, Rome 00161, Italy
| | - Pamela G Robey
- Craniofacial and Skeletal Diseases Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, USA
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31
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Park J, Gebhardt M, Golovchenko S, Perez-Branguli F, Hattori T, Hartmann C, Zhou X, deCrombrugghe B, Stock M, Schneider H, von der Mark K. Dual pathways to endochondral osteoblasts: a novel chondrocyte-derived osteoprogenitor cell identified in hypertrophic cartilage. Biol Open 2015; 4:608-21. [PMID: 25882555 PMCID: PMC4434812 DOI: 10.1242/bio.201411031] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
According to the general understanding, the chondrocyte lineage terminates with the elimination of late hypertrophic cells by apoptosis in the growth plate. However, recent cell tracking studies have shown that murine hypertrophic chondrocytes can survive beyond “terminal” differentiation and give rise to a progeny of osteoblasts participating in endochondral bone formation. The question how chondrocytes convert into osteoblasts, however, remained open. Following the cell fate of hypertrophic chondrocytes by genetic lineage tracing using BACCol10;Cre induced YFP-reporter gene expression we show that a progeny of Col10Cre-reporter labelled osteoprogenitor cells and osteoblasts appears in the primary spongiosa and participates – depending on the developmental stage – substantially in trabecular, endosteal, and cortical bone formation. YFP+ trabecular and endosteal cells isolated by FACS expressed Col1a1, osteocalcin and runx2, thus confirming their osteogenic phenotype. In searching for transitory cells between hypertrophic chondrocytes and trabecular osteoblasts we identified by confocal microscopy a novel, small YFP+Osx+ cell type with mitotic activity in the lower hypertrophic zone at the chondro-osseous junction. When isolated from growth plates by fractional enzymatic digestion, these cells termed CDOP (chondrocyte-derived osteoprogenitor) cells expressed bone typical genes and differentiated into osteoblasts in vitro. We propose the Col10Cre-labeled CDOP cells mark the initiation point of a second pathway giving rise to endochondral osteoblasts, alternative to perichondrium derived osteoprogenitor cells. These findings add to current concepts of chondrocyte-osteocyte lineages and give new insight into the complex cartilage-bone transition process in the growth plate.
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Affiliation(s)
- Jung Park
- Dept. Exp. Medicine I, Nikolaus-Fiebiger Center of Molecular Medicine, University of Erlangen-Nuremberg, 91054 Erlangen, Germany Department of Pediatrics, Division of Molecular Pediatrics, University of Erlangen-Nuremberg, 91054 Erlangen, Germany
| | - Matthias Gebhardt
- Dept. Exp. Medicine I, Nikolaus-Fiebiger Center of Molecular Medicine, University of Erlangen-Nuremberg, 91054 Erlangen, Germany
| | - Svitlana Golovchenko
- Dept. Exp. Medicine I, Nikolaus-Fiebiger Center of Molecular Medicine, University of Erlangen-Nuremberg, 91054 Erlangen, Germany
| | - Francesc Perez-Branguli
- Junior Research Group III, Nikolaus-Fiebiger Center of Molecular Medicine, University Hospital, 91054 Erlangen, Germany
| | - Takako Hattori
- Dept. of Biochemistry and Molecular Dentistry, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama City,700-8525, Japan
| | - Christine Hartmann
- Dept. of Bone- and Skeletal Research, Institute of Experimental Musculoskeletal Medicine (IEMM), University Hospital Muenster, 48149 Muenster, Germany
| | - Xin Zhou
- Dept. Genetics, MDAnderson Cancer Center, Houston, TX 77030, USA
| | | | - Michael Stock
- Dept. Internal Medicine III, University Hospital Erlangen, D-91054 Erlangen, Germany
| | - Holm Schneider
- Department of Pediatrics, Division of Molecular Pediatrics, University of Erlangen-Nuremberg, 91054 Erlangen, Germany
| | - Klaus von der Mark
- Dept. Exp. Medicine I, Nikolaus-Fiebiger Center of Molecular Medicine, University of Erlangen-Nuremberg, 91054 Erlangen, Germany
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Matrix remodeling by MMPs during wound repair. Matrix Biol 2015; 44-46:113-21. [PMID: 25770908 DOI: 10.1016/j.matbio.2015.03.002] [Citation(s) in RCA: 255] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Revised: 03/05/2015] [Accepted: 03/06/2015] [Indexed: 12/16/2022]
Abstract
Repair following injury involves a range of processes - such as re-epithelialization, scar formation, angiogenesis, inflammation, and more - that function, often together, to restore tissue architecture. MMPs carry out diverse roles in all of these activities. In this article, we discuss how specific MMPs act on ECM during two critical repair processes: re-epithelialization and resolution of scar tissue. For wound closure, we discuss how two MMPs - MMP1 in human epidermis and MMP7 in mucosal epithelia - facilitate re-epithelialization by cleaving different ECM or ECM-associated proteins to affect similar integrin:matrix adhesion. In scars and fibrotic tissues, we discuss that a variety of MMPs carry out a diverse range of activities that can either promote or limit ECM deposition. However, few of these MMP-driven activities have been demonstrated to be due a direct action on ECM.
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33
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Paiva KBS, Granjeiro JM. Bone tissue remodeling and development: Focus on matrix metalloproteinase functions. Arch Biochem Biophys 2014; 561:74-87. [PMID: 25157440 DOI: 10.1016/j.abb.2014.07.034] [Citation(s) in RCA: 119] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 07/17/2014] [Accepted: 07/21/2014] [Indexed: 12/25/2022]
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Wong HLX, Cao R, Jin G, Ming Chan K, Cao Y, zhou Z. When MT1-MMP meets ADAMs. Cell Cycle 2014; 11:2793-8. [DOI: 10.4161/cc.20949] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Abstract
Two opposing descriptions of so-called mesenchymal stem cells (MSCs) exist at this time. One sees MSCs as the postnatal, self-renewing, and multipotent stem cells for the skeleton. This cell coincides with a specific type of bone marrow perivascular cell. In skeletal physiology, this skeletal stem cell is pivotal to the growth and lifelong turnover of bone and to its native regeneration capacity. In hematopoietic physiology, its role as a key player in maintaining hematopoietic stem cells in their niche and in regulating the hematopoietic microenvironment is emerging. In the alternative description, MSCs are ubiquitous in connective tissues and are defined by in vitro characteristics and by their use in therapy, which rests on their ability to modulate the function of host tissues rather than on stem cell properties. Here, I discuss how the two views developed, conceptually and experimentally, and attempt to clarify the confusion arising from their collision.
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Affiliation(s)
- Paolo Bianco
- Department of Molecular Medicine, Sapienza University of Rome, 00161 Rome, Italy;
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36
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Bunker DLJ, Ilie V, Ilie V, Nicklin S. Tendon to bone healing and its implications for surgery. Muscles Ligaments Tendons J 2014; 4:343-350. [PMID: 25489553 PMCID: PMC4241426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Entheses are complex structures which act to reduce stress concentrations between tendon and skeleton tissues. Understanding the development and function of the enthesis organ has implications for surgical repair, particularly in regards to healing and the regulation of tendon to bone engraftment. In this paper we review the development and function of entheses as well as the enthesis organ concept. Next we examine the process of tendon to bone healing and how this can be regulated, before addressing implications for surgical repair and post-operative care.
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Affiliation(s)
| | | | | | - Sean Nicklin
- Consultant Plastic & Hand Surgeon, Prince of Wales, Sydney Childrens and Sydney Hospitals, Australia
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Serafini M, Sacchetti B, Pievani A, Redaelli D, Remoli C, Biondi A, Riminucci M, Bianco P. Establishment of bone marrow and hematopoietic niches in vivo by reversion of chondrocyte differentiation of human bone marrow stromal cells. Stem Cell Res 2014; 12:659-72. [PMID: 24675053 DOI: 10.1016/j.scr.2014.01.006] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Revised: 01/22/2014] [Accepted: 01/29/2014] [Indexed: 02/02/2023] Open
Abstract
Human bone marrow stromal cells (BMSCs, also known as bone marrow-derived "mesenchymal stem cells") can establish the hematopoietic microenvironment within heterotopic ossicles generated by transplantation at non-skeletal sites. Here we show that non-mineralized cartilage pellets formed by hBMSCs ex vivo generate complete ossicles upon heterotopic transplantation in the absence of exogenous scaffolds. These ossicles display a remarkable degree of architectural fidelity, showing that an exogenous conductive scaffold is not an absolute requirement for bone formation by transplanted BMSCs. Marrow cavities within the ossicles include erythroid, myeloid and granulopoietic lineages, clonogenic hematopoietic progenitors and phenotypic HSCs, indicating that complete stem cell niches and hematopoiesis are established. hBMSCs (CD146(+) adventitial reticular cells) are established in the heterotopic chimeric bone marrow through a unique process of endochondral bone marrow formation, distinct from physiological endochondral bone formation. In this process, chondrocytes remain viable and proliferate within the pellet, are released from cartilage, and convert into bone marrow stromal cells. Once explanted in secondary culture, these cells retain phenotype and properties of skeletal stem cells ("MSCs"), including the ability to form secondary cartilage pellets and secondary ossicles upon serial transplantation. Ex vivo, hBMSCs initially induced to form cartilage pellets can be reestablished in adherent culture and can modulate gene expression between cartilage and stromal cell phenotypes. These data show that so-called "cartilage differentiation" of BMSCs in vitro is a reversible phenomenon, which is actually reverted, in vivo, to the effect of generating stromal cells supporting the homing of hematopoietic stem cells and progenitors.
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Affiliation(s)
- Marta Serafini
- Dulbecco Telethon Institute at Tettamanti Research Center, Pediatric Department, University of Milano - Bicocca, Monza, Italy; Tettamanti Research Center, Pediatric Department, University of Milano - Bicocca, San Gerardo Hospital, Monza, Italy
| | - Benedetto Sacchetti
- Stem Cell Lab, Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - Alice Pievani
- Dulbecco Telethon Institute at Tettamanti Research Center, Pediatric Department, University of Milano - Bicocca, Monza, Italy; Tettamanti Research Center, Pediatric Department, University of Milano - Bicocca, San Gerardo Hospital, Monza, Italy
| | - Daniela Redaelli
- Dulbecco Telethon Institute at Tettamanti Research Center, Pediatric Department, University of Milano - Bicocca, Monza, Italy; Tettamanti Research Center, Pediatric Department, University of Milano - Bicocca, San Gerardo Hospital, Monza, Italy
| | - Cristina Remoli
- Stem Cell Lab, Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - Andrea Biondi
- Tettamanti Research Center, Pediatric Department, University of Milano - Bicocca, San Gerardo Hospital, Monza, Italy
| | - Mara Riminucci
- Stem Cell Lab, Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - Paolo Bianco
- Stem Cell Lab, Department of Molecular Medicine, Sapienza University of Rome, Italy.
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Ouyang Z, Chen Z, Ishikawa M, Yue X, Kawanami A, Leahy P, Greenfield EM, Murakami S. Prx1 and 3.2kb Col1a1 promoters target distinct bone cell populations in transgenic mice. Bone 2014; 58:136-145. [PMID: 24513582 PMCID: PMC4000289 DOI: 10.1016/j.bone.2013.10.016] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 10/11/2013] [Accepted: 10/19/2013] [Indexed: 02/07/2023]
Abstract
Bones consist of a number of cell types including osteoblasts and their precursor cells at various stages of differentiation. To analyze cellular organization within the bone, we generated Col1a1CreER-DsRed transgenic mice that express, in osteoblasts, CreER and DsRed under the control of a mouse 3.2kb Col1a1 promoter. We further crossed Col1a1CreER-DsRed mice with Prx1CreER-GFP mice that express CreER and GFP in osteochondro progenitor cells under the control of a 2.4kb Prx1 promoter. Since the 3.2kb Col1a1 promoter becomes active in osteoblasts at early stages of differentiation, and Prx1CreER-GFP-expressing periosteal cells show endogenous Col1a1 expression, we expected to find a cell population in which both the 2.4kb Prx1 promoter and the 3.2kb Col1a1 promoter are active. However, our histological and flow cytometric analyses demonstrated that these transgenes are expressed in distinct cell populations. In the periosteum of long bones, Col1a1CreER-DsRed is expressed in the innermost layer directly lining the bone surface, while Prx1CreER-GFP-expressing cells are localized immediately outside of the Col1a1CreER-DsRed-expressing osteoblasts. In the calvaria, Prx1CreER-GFP-expressing cells are also localized in the cranial suture mesenchyme. Our experiments further showed that Col1a1CreER-DsRed-expressing cells lack chondrogenic potential, while the Prx1CreER-GFP-expressing cells show both chondrogenic and osteogenic potential. Our results indicate that Col1a1CreER-DsRed-expressing cells are committed osteoblasts, while Prx1CreER-GFP-expressing cells are osteochondro progenitor cells. The Prx1CreER-GFP and Col1a1CreER-DsRed transgenes will offer novel approaches for analyzing lineage commitment and early stages of osteoblast differentiation under physiologic and pathologic conditions.
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Affiliation(s)
- Zhufeng Ouyang
- Department of Orthopaedics, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Zhijun Chen
- Department of Orthopaedics, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Masakazu Ishikawa
- Department of Medicine, Cardiovascular Institute, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Xiuzhen Yue
- Department of Orthopaedics, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Aya Kawanami
- Department of Orthopaedics, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Patrick Leahy
- Division of General Medical Sciences, Oncology, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Edward M Greenfield
- Department of Orthopaedics, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA; Division of General Medical Sciences, National Center for Regenerative Medicine, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Shunichi Murakami
- Department of Orthopaedics, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA; Division of General Medical Sciences, National Center for Regenerative Medicine, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA; Department of Genetics and Genomic Sciences, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA.
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Madsen DH, Jürgensen HJ, Ingvarsen S, Melander MC, Albrechtsen R, Hald A, Holmbeck K, Bugge TH, Behrendt N, Engelholm LH. Differential actions of the endocytic collagen receptor uPARAP/Endo180 and the collagenase MMP-2 in bone homeostasis. PLoS One 2013; 8:e71261. [PMID: 23940733 PMCID: PMC3734290 DOI: 10.1371/journal.pone.0071261] [Citation(s) in RCA: 23] [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: 03/06/2013] [Accepted: 06/28/2013] [Indexed: 11/19/2022] Open
Abstract
A well-coordinated remodeling of uncalcified collagen matrices is a pre-requisite for bone development and homeostasis. Collagen turnover proceeds through different pathways, either involving extracellular reactions exclusively, or being dependent on endocytic processes. Extracellular collagen degradation requires the action of secreted or membrane attached collagenolytic proteases, whereas the alternative collagen degradation pathway proceeds intracellularly after receptor-mediated uptake and delivery to the lysosomes. In this study we have examined the functional interplay between the extracellular collagenase, MMP-2, and the endocytic collagen receptor, uPARAP, by generating mice with combined deficiency of both components. In both uPARAP-deficient and MMP-2-deficient adult mice the length of the tibia and femur was decreased, along with a reduced bone mineral density and trabecular bone quality. An additional decrease in bone length was observed when combining the two deficiencies, pointing to both components being important for the remodeling processes in long bone growth. In agreement with results found by others, a different effect of MMP-2 deficiency was observed in the distinct bone structures of the calvaria. These membranous bones were found to be thickened in MMP-2-deficient mice, an effect likely to be related to an accompanying defect in the canalicular system. Surprisingly, both of the latter defects in MMP-2-deficient mice were counteracted by concurrent uPARAP deficiency, demonstrating that the collagen receptor does not support the same matrix remodeling processes as the MMP in the growth of the skull. We conclude that both uPARAP and MMP-2 take part in matrix turnover processes important for bone growth. However, in some physiological situations, these two components do not support the same step in the growth process.
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Affiliation(s)
- Daniel H Madsen
- The Finsen Laboratory, Rigshospitalet/Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark.
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40
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Behr B, Longaker MT, Quarto N. Absence of endochondral ossification and craniosynostosis in posterior frontal cranial sutures of Axin2(-/-) mice. PLoS One 2013; 8:e70240. [PMID: 23936395 PMCID: PMC3731366 DOI: 10.1371/journal.pone.0070240] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Accepted: 06/18/2013] [Indexed: 12/05/2022] Open
Abstract
During the first month of life, the murine posterior-frontal suture (PF) of the cranial vault closes through endochondral ossification, while other sutures remain patent. These processes are tightly regulated by canonical Wnt signaling. Low levels of active canonical Wnt signaling enable endochondral ossification and therefore PF-suture closure, whereas constitutive activation of canonical Wnt causes PF-suture patency. We therefore sought to test this concept with a knockout mouse model. PF-sutures of Axin2−/− mice, which resemble a state of constantly activated canonical Wnt signaling, were investigated during the physiological time course of PF-suture closure and compared in detail with wild type littermates. Histological analysis revealed that the architecture in Axin2−/− PF-sutures was significantly altered in comparison to wild type. The distance between the endocranial layers was dramatically increased and suture closure was significantly delayed. Moreover, physiological endochondral ossification did not occur, rather an ectopic cartilage appeared between the endocranial and ectocranial bone layers at P7 which eventually involutes at P13. Quantitative PCR analysis showed the lack of Col10α1 upregulation in Axin2−/− PF-suture. Immunohistochemistry and gene expression analysis also revealed high levels of type II collagen as compared to type I collagen and absence of Mmp-9 in the cartilage of Axin2−/− PF-suture. Moreover, TUNEL staining showed a high percentage of apoptotic chondrocytes in Axin2−/− PF-sutures at P9 and P11 as compared to wild type. These data indicated that Axin2−/− PF-sutures lack physiological endochondral ossification, contain ectopic cartilage and display delayed suture closure.
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Affiliation(s)
- Björn Behr
- Hagey Laboratory, Department of Surgery, Stanford University School of Medicine, Stanford, California, United States of America
- Department of Plastic and Hand Surgery, Burn Center, BG-University Hospital, Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Michael T. Longaker
- Hagey Laboratory, Department of Surgery, Stanford University School of Medicine, Stanford, California, United States of America
| | - Natalina Quarto
- Hagey Laboratory, Department of Surgery, Stanford University School of Medicine, Stanford, California, United States of America
- Dipartimento di Scienze Biomediche Avanzate, Universita’ degli Studi di Napoli Federico II, Napoli, Italy
- * E-mail:
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41
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Zhou H, Cooper MS, Seibel MJ. Endogenous Glucocorticoids and Bone. Bone Res 2013; 1:107-19. [PMID: 26273496 DOI: 10.4248/br201302001] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Accepted: 04/20/2013] [Indexed: 01/28/2023] Open
Abstract
While the adverse effects of glucocorticoids on bone are well described, positive effects of glucocorticoids on the differentiation of osteoblasts are also observed. These paradoxical effects of glucocorticoids are dose dependent. At both physiologicaland supraphysiological levels of glucocorticoids, osteoblasts and osteocytes are the major glucocorticoid target cells. However, the response of the osteoblasts to each of these is quite distinct. At physiology levels, glucocorticoids direct mesenchymal progenitor cells to differentiate towards osteoblasts and thus increase bone formation in a positive way. In contrast with ageing, the excess production of glucocorticoids, at both systemic and intracellular levels, appear to impact on osteoblast and osteocytes in a negative way in a similar fashion to that seen with therapeutic glucocorticoids. This review will focus on therole of glucocorticoids in normal bone physiology, with particular emphasis on the mechanism by which endogenous glucocorticoids impact on bone and its constituent cells.
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Affiliation(s)
- Hong Zhou
- Bone Research Program, ANZAC Research Institute , Sydney, Australia ; Concord Clinical School, The University of Sydney , Sydney, Australia
| | - Mark S Cooper
- Concord Clinical School, The University of Sydney , Sydney, Australia ; Department of Endocrinology & Metabolism, Concord Hospital , Sydney, Australia
| | - Markus J Seibel
- Bone Research Program, ANZAC Research Institute , Sydney, Australia ; Concord Clinical School, The University of Sydney , Sydney, Australia ; Department of Endocrinology & Metabolism, Concord Hospital , Sydney, Australia
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Tang Y, Rowe RG, Botvinick EL, Kurup A, Putnam AJ, Seiki M, Weaver VM, Keller ET, Goldstein S, Dai J, Begun D, Saunders T, Weiss SJ. MT1-MMP-dependent control of skeletal stem cell commitment via a β1-integrin/YAP/TAZ signaling axis. Dev Cell 2013; 25:402-16. [PMID: 23685250 DOI: 10.1016/j.devcel.2013.04.011] [Citation(s) in RCA: 192] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 04/09/2013] [Accepted: 04/15/2013] [Indexed: 12/18/2022]
Abstract
In vitro, topographical and biophysical cues arising from the extracellular matrix (ECM) direct skeletal stem cell (SSC) commitment and differentiation. However, the mechanisms by which the SSC-ECM interface is regulated and the outcome of such interactions on stem cell fate in vivo remain unknown. Here we demonstrate that conditional deletion of the membrane-anchored metalloproteinase MT1-MMP (Mmp14) in mesenchymal progenitors, but not in committed osteoblasts, redirects SSC fate decisions from osteogenesis to adipo- and chondrogenesis. By effecting ECM remodeling, MT1-MMP regulates stem cell shape, thereby activating a β1-integrin/RhoGTPase signaling cascade and triggering the nuclear localization of the transcriptional coactivators YAP and TAZ, which serve to control SSC lineage commitment. These data identify a critical MT1-MMP/integrin/YAP/TAZ axis operative in the stem cell niche that oversees SSC fate determination.
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Affiliation(s)
- Yi Tang
- Division of Molecular Medicine & Genetics, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
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Sarkar P, Kumar S. Calcium sensing receptor modulation for cancer therapy. Asian Pac J Cancer Prev 2013; 13:3561-8. [PMID: 23098435 DOI: 10.7314/apjcp.2012.13.8.3561] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The calcium sensing receptor (CaSR) is a member of the largest family of cell surface receptors, the G protein-coupled receptors involved in calcium homeostasis. The role of the CaSR in neoplasia appears to be homeostatic; loss of normal CaSR-induced response to extracellular calcium is observed in cancers of the colon and ovary, while increased release of PTHrP is observed in cancers of the breast, prostate and Leydig cells. Currently CaSR can be considered as a molecule that can either promote or prevent tumor growth depending on the type of cancer. Therefore, recognition of the multifaceted role of CaSR in gliomas and other malignant tumors in general is fundamental to elucidating the mechanisms of tumor progression and the development of novel therapeutic agents. Emphasis should be placed on development of drug-targeting methods to modulate CaSR activity in cancer cells.
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Affiliation(s)
- Puja Sarkar
- IGNOU-I2IT Centre of Excellence for Advanced Education and Research, Pune, Maharashtra, India
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Mao L, Yano M, Kawao N, Tamura Y, Okada K, Kaji H. Role of matrix metalloproteinase-10 in the BMP-2 inducing osteoblastic differentiation. Endocr J 2013; 60:1309-19. [PMID: 24077220 DOI: 10.1507/endocrj.ej13-0270] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Fibrodysplasia ossificans progressiva (FOP) is a skeletal disorder with progressive heterotopic ossification in skeletal muscle. A mutation causing constitutive activation in a bone morphogenetic protein (BMP) type 1 receptor [ALK2(R206H)] is found in most patients with FOP. However, the details in the heterotopic ossification of muscle in FOP and the role of matrix metalloproteinase-10 (MMP-10) in bone remain to be fully elucidated. In the present study, we investigated the role of MMP-10 in the differentiation of mouse myoblastic C2C12 cells into osteoblasts. MMP-10 was extracted as a factor, whose expression was most extensively enhanced by ALK2 (R206H) transfection in C2C12 cells. MMP-10 significantly augmented the levels of Osterix, type 1 collagen, alkaline phosphatase (ALP) and osteocalcin mRNA as well as ALP activity enhanced by BMP-2 in C2C12 cells. Moreover, a reduction in endogenous MMP-10 levels by siRNA significantly decreased the levels of Runx2, Osterix, type 1 collagen, ALP and osteocalcin mRNA enhanced by BMP-2 in these cells. In addition, MMP-10 increased the phosphorylation of Smad1/5/8 as well as enhanced the levels of Smad6 and Smad7 mRNA induced by BMP-2. In conclusion, the present study first demonstrated that MMP-10 promotes the differentiation of myoblasts into osteoblasts by interacting with the BMP signaling pathway. MMP-10 may play some important role in the heterotopic ossification of muscle in FOP.
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Affiliation(s)
- Li Mao
- Department of Physiology and Regenerative Medicine, Kinki University Faculty of Medicine, Osaka-Sayama 589-8511, Japan
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45
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Schaer M, Schober M, Berger S, Boileau P, Zumstein MA. Biologically based strategies to augment rotator cuff tears. INTERNATIONAL JOURNAL OF SHOULDER SURGERY 2012; 6:51-60. [PMID: 22787334 PMCID: PMC3391785 DOI: 10.4103/0973-6042.96995] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Lesions of the rotator cuff (RC) are among the most frequent tendon injuries. In spite of the developments in both open and arthroscopic surgery, RC repair still very often fails. In order to reduce the failure rate after surgery, several experimental in vitro and in vivo therapy methods have been developed for biological improvement of the reinsertion. This article provides an overview of the current evidence for augmentation of RC reconstruction with growth factors. Furthermore, potential future therapeutic approaches are discussed. We performed a comprehensive search of the PubMed database using various combinations of the keywords “tendon,” “rotator cuff,” “augmentation,” “growth factor,” “platelet-rich fibrin,” and “platelet-rich plasma” for publications up to 2011. Given the linguistic capabilities of the research team, we considered publications in English, German, French, and Spanish. We excluded literature reviews, case reports, and letters to the editor.
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Affiliation(s)
- M Schaer
- Department of Orthopaedic Surgery and Traumatology, Inselspital, Bern, Switzerland
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Traylor RN, Dobyns WB, Rosenfeld JA, Wheeler P, Spence JE, Bandholz AM, Bawle EV, Carmany EP, Powell CM, Hudson B, Schultz RA, Shaffer LG, Ballif BC. Investigation of TBR1 Hemizygosity: Four Individuals with 2q24 Microdeletions. Mol Syndromol 2012; 3:102-112. [PMID: 23112752 DOI: 10.1159/000342008] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2012] [Indexed: 12/19/2022] Open
Abstract
TBR1 encodes a transcription factor with critical roles in corticogenesis, including cortical neuron migration and axon pathfinding, establishment of regional and laminar identity of cortical neurons, and control of glutamatergic neuronal cell fate. Based upon TBR1's role in cortical development, we sought to investigate TBR1 hemizygosity in individuals referred for genetic evaluation of intellectual disability and developmental delay. We describe 4 patients with microdeletions identified by molecular cytogenetic techniques, encompassing TBR1 and spanning 2q24.1q31.1, ranging in size from 2.17 to 12.34 Mb. Only the patient with the largest deletion had a possible cortical malformation. Mild ventriculomegaly is the only common brain anomaly, present in all patients; a Chiari I malformation is seen in 2 patients, and mega cisterna magna is seen in a third. Our findings are consistent with Tbr1 mouse models showing that hemizygosity of the gene requires additional genetic factors for the manifestation of severe structural brain malformations. Other syndromic features are present in these patients, including autism spectrum disorders, ocular colobomas, and craniosynostosis, features that are likely affected by the deletion of genes other than TBR1.
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Affiliation(s)
- R N Traylor
- Signature Genomic Laboratories, PerkinElmer Inc., Spokane, Wash., USA
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Chan K, Wong H, Jin G, Liu B, Cao R, Cao Y, Lehti K, Tryggvason K, Zhou Z. MT1-MMP Inactivates ADAM9 to Regulate FGFR2 Signaling and Calvarial Osteogenesis. Dev Cell 2012; 22:1176-90. [DOI: 10.1016/j.devcel.2012.04.014] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2011] [Revised: 02/11/2012] [Accepted: 04/17/2012] [Indexed: 12/12/2022]
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48
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Pei J, Jung S, Jin SG, Moon KS, Wen M, Li SY, Jang WY, Ryu HH, Lee KH, Kim IY, Jung TY. Possible role of matrix metalloproteinases (MMPs) in hyperostosis of intracranial meningiomas. Acta Neurochir (Wien) 2012; 154:611-20; discussion 620. [PMID: 22327326 DOI: 10.1007/s00701-012-1289-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Accepted: 01/16/2012] [Indexed: 10/14/2022]
Abstract
OBJECT Although bone invasion and hyperostosis are common phenomena in patients with intracranial meningiomas, the basic pathomechanism is not fully understood. Based on an immunohistochemical study of surgically resected samples with hyperostosis, we postulate a possible mechanism of hyperostosis in patients with intracranial meningiomas. MATERIALS AND METHODS Forty-six meningiomas were evaluated in this study. Twenty-six meningiomas associated with hyperostosis specimens served as the study group, and 20 meningiomas without any bony changes served as controls. An immunohistochemical staining technique was used to detect the expression of matrix metalloproteinase (MMP)-2, -9, and -13, membrane type (MT)1-MMP, estrogen receptor (ER), and progesterone receptor (PR) in the main tumor and hyperostotic portions of the studied samples. RESULTS In the non-hyperostosis group, expression of MMP-13, MT1-MMP, and ER was significantly less than in the main tumor portion of hyperostotic meningiomas, while there was no difference in the expression of MMP-2 and -9 and PR in the main tumor between the two groups. In the hyperostosis group, the immunoreactivity of MMP-2 in the hyperostotic portion revealed a higher pattern of expression than the main tumor (p < 0.002). The expression of MMP-9, MT1-MMP, ER, and PR had relatively positive immunoreactivity in the main tumor portion (P < 0.05). CONCLUSIONS Increased expression of MMP-13 and MT1-MMP in the tumor portion of hyperostosis of meningiomas might contribute to the initiation of osteolysis. Activated MMP-2 in hyperostotic lesions may change the physiological metabolism of the skull bone, thus playing an important role in hyperostosis formation.
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Wigner NA, Kulkarni N, Yakavonis M, Young M, Tinsley B, Meeks B, Einhorn TA, Gerstenfeld LC. Urine matrix metalloproteinases (MMPs) as biomarkers for the progression of fracture healing. Injury 2012; 43:274-8. [PMID: 21689817 PMCID: PMC3193575 DOI: 10.1016/j.injury.2011.05.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Revised: 04/30/2011] [Accepted: 05/25/2011] [Indexed: 02/02/2023]
Abstract
Whilst the majority of fractures heal normally, it is estimated that ∼10% of fractures exhibit some level of delayed or impaired healing. Although radiography is the primary diagnostic tool to assess the progression of fracture healing, radiographic features only qualitatively correlate with tissue level increases in mineral content and do not quantitatively measure underlying biological processes that are associated with the progression of healing. Specific metaloproteinases have been shown to be essential to processes of both angiogenesis and mineralised cartilage resorption and bone remodelling at different phases of fracture healing. The aim of this study was to determine the potential of using a simple urine based assay of the activity of two MMPs as a means of assessing the biological progression of fracture healing through the endochondral phase of healing. Using a standard mid-diaphyseal murine model of femoral fracture, MMP9 and MMP13 proteins and enzymatic activity levels were quantified in the urine of mice across the time-course of fracture healing and compared to the mRNA and protein expression profiles in the calluses. Both urinary MMP9 and MMP13 protein and enzymatic activity levels, assessed by Western blot, zymogram and specific MMP fluorometric substrate assays, corresponded to mRNA expression and immunohistologic assays of the proteins within callus tissues. These studies suggest that urinary levels of MMP9 and MMP13 may have potential as metabolic markers to monitor the progression of fracture healing.
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Affiliation(s)
- Nathan A. Wigner
- Orthopaedic Research Laboratory Department of Orthopedic Surgery, Boston University School of Medicine, Boston, MA 02118 USA
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA
| | - Nitin Kulkarni
- Orthopaedic Research Laboratory Department of Orthopedic Surgery, Boston University School of Medicine, Boston, MA 02118 USA
| | - Mark Yakavonis
- Orthopaedic Research Laboratory Department of Orthopedic Surgery, Boston University School of Medicine, Boston, MA 02118 USA
| | - Megan Young
- Orthopaedic Research Laboratory Department of Orthopedic Surgery, Boston University School of Medicine, Boston, MA 02118 USA
| | - Brian Tinsley
- Orthopaedic Research Laboratory Department of Orthopedic Surgery, Boston University School of Medicine, Boston, MA 02118 USA
| | - Brett Meeks
- Orthopaedic Research Laboratory Department of Orthopedic Surgery, Boston University School of Medicine, Boston, MA 02118 USA
| | - Thomas A. Einhorn
- Orthopaedic Research Laboratory Department of Orthopedic Surgery, Boston University School of Medicine, Boston, MA 02118 USA
| | - Louis C. Gerstenfeld
- Orthopaedic Research Laboratory Department of Orthopedic Surgery, Boston University School of Medicine, Boston, MA 02118 USA
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Thiolloy S, Edwards JR, Fingleton B, Rifkin DB, Matrisian LM, Lynch CC. An osteoblast-derived proteinase controls tumor cell survival via TGF-beta activation in the bone microenvironment. PLoS One 2012; 7:e29862. [PMID: 22238668 PMCID: PMC3251607 DOI: 10.1371/journal.pone.0029862] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Accepted: 12/05/2011] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Breast to bone metastases frequently induce a "vicious cycle" in which osteoclast mediated bone resorption and proteolysis results in the release of bone matrix sequestered factors that drive tumor growth. While osteoclasts express numerous proteinases, analysis of human breast to bone metastases unexpectedly revealed that bone forming osteoblasts were consistently positive for the proteinase, MMP-2. Given the role of MMP-2 in extracellular matrix degradation and growth factor/cytokine processing, we tested whether osteoblast derived MMP-2 contributed to the vicious cycle of tumor progression in the bone microenvironment. METHODOLOGY/PRINCIPAL FINDINGS To test our hypothesis, we utilized murine models of the osteolytic tumor-bone microenvironment in immunocompetent wild type and MMP-2 null mice. In longitudinal studies, we found that host MMP-2 significantly contributed to tumor progression in bone by protecting against apoptosis and promoting cancer cell survival (caspase-3; immunohistochemistry). Our data also indicate that host MMP-2 contributes to tumor induced osteolysis (μCT, histomorphometry). Further ex vivo/in vitro experiments with wild type and MMP-2 null osteoclast and osteoblast cultures identified that 1) the absence of MMP-2 did not have a deleterious effect on osteoclast function (cd11B isolation, osteoclast differentiation, transwell migration and dentin resorption assay); and 2) that osteoblast derived MMP-2 promoted tumor survival by regulating the bioavailability of TGFβ, a factor critical for cell-cell communication in the bone (ELISA, immunoblot assay, clonal and soft agar assays). CONCLUSION/SIGNIFICANCE Collectively, these studies identify a novel "mini-vicious cycle" between the osteoblast and metastatic cancer cells that is key for initial tumor survival in the bone microenvironment. In conclusion, the findings of our study suggest that the targeted inhibition of MMP-2 and/or TGFβ would be beneficial for the treatment of bone metastases.
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Affiliation(s)
- Sophie Thiolloy
- Department of Cancer Biology, Vanderbilt University, Nashville, Tennessee, United States of America
| | - James R. Edwards
- Nuffield Orthopaedic Centre, University of Oxford, Oxford, United Kingdom
| | - Barbara Fingleton
- Department of Cancer Biology, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Daniel B. Rifkin
- Department of Cell Biology, New York University School of Medicine, New York, New York, United States of America
| | - Lynn M. Matrisian
- Department of Cancer Biology, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Conor C. Lynch
- Tumor Biology Department, H. Lee Moffitt Cancer Center, Tampa, Florida, United States of America
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