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Owen R, Reilly GC. In vitro Models of Bone Remodelling and Associated Disorders. Front Bioeng Biotechnol 2018; 6:134. [PMID: 30364287 PMCID: PMC6193121 DOI: 10.3389/fbioe.2018.00134] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 09/07/2018] [Indexed: 01/02/2023] Open
Abstract
Disruption of bone remodelling by diseases such as osteoporosis results in an imbalance between bone formation by osteoblasts and resorption by osteoclasts. Research into these metabolic bone disorders is primarily performed in vivo; however, in the last decade there has been increased interest in generating in vitro models that can reduce or replace our reliance on animal testing. With recent advances in biomaterials and tissue engineering the feasibility of laboratory-based alternatives is growing; however, to date there are no established in vitro models of bone remodelling. In vivo, remodelling is performed by organised packets of osteoblasts and osteoclasts called bone multicellular units (BMUs). The key determinant of whether osteoclasts form and remodelling occurs is the ratio between RANKL, a cytokine which stimulates osteoclastogenesis, and OPG, its inhibitor. This review initially details the different circumstances, conditions, and factors which have been found to modulate the RANKL:OPG ratio, and fundamental factors to be considered if a robust in vitro model is to be developed. Following this, an examination of what has been achieved thus far in replicating remodelling in vitro using three-dimensional co-cultures is performed, before overviewing how such systems are already being utilised in the study of associated diseases, such as metastatic cancer and dental disorders. Finally, a discussion of the most important considerations to be incorporated going forward is presented. This details the need for the use of cells capable of endogenously producing the required cytokines, application of mechanical stimulation, and the presence of appropriate hormones in order to produce a robust model of bone remodelling.
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Affiliation(s)
| | - Gwendolen C. Reilly
- Department of Materials Science and Engineering, University of Sheffield, Insigneo Institute for in silico Medicine, Sheffield, United Kingdom
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Heusschen R, Muller J, Duray E, Withofs N, Bolomsky A, Baron F, Beguin Y, Menu E, Ludwig H, Caers J. Molecular mechanisms, current management and next generation therapy in myeloma bone disease. Leuk Lymphoma 2017; 59:14-28. [PMID: 28573897 DOI: 10.1080/10428194.2017.1323272] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Multiple myeloma (MM) bone disease is a major cause of morbidity and mortality in MM patients and persists even in patients in remission. This bone disease is caused by an uncoupling of bone remodeling, with increased osteoclast and decreased osteoblast activity and formation, culminating in lytic bone destruction. Bisphosphonates are the current standard of care but new therapies are needed. As the molecular mechanisms controlling MM bone disease are increasingly well understood, new therapeutic targets are extensively explored in the preclinical setting and initial clinical trials with novel compounds now show promising results. In this review, we will provide a comprehensive overview of the biology of MM bone disease, summarize its current clinical management and discuss preclinical and clinical data on next generation therapies.
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Affiliation(s)
- Roy Heusschen
- a Laboratory of Hematology , University of Liège, GIGA-I3 , Liège , Belgium
| | - Joséphine Muller
- a Laboratory of Hematology , University of Liège, GIGA-I3 , Liège , Belgium
| | - Elodie Duray
- a Laboratory of Hematology , University of Liège, GIGA-I3 , Liège , Belgium
| | - Nadia Withofs
- b Division of Nuclear Medicine and Oncological Imaging, Department of Medical Physics , University and CHU of Liège , Liège , Belgium
| | - Arnold Bolomsky
- c Wilhelminen Cancer Research Institute, Department of Medicine I , Center for Oncology and Hematology, Wilhelminenspital , Vienna , Austria
| | - Frédéric Baron
- a Laboratory of Hematology , University of Liège, GIGA-I3 , Liège , Belgium.,d Division of Hematology, Department of Medicine , University and CHU of Liège , Liège , Belgium
| | - Yves Beguin
- a Laboratory of Hematology , University of Liège, GIGA-I3 , Liège , Belgium.,d Division of Hematology, Department of Medicine , University and CHU of Liège , Liège , Belgium
| | - Eline Menu
- e Department of Hematology and Immunology , Myeloma Center Brussels, Vrije Universiteit Brussel , Brussels , Belgium
| | - Heinz Ludwig
- c Wilhelminen Cancer Research Institute, Department of Medicine I , Center for Oncology and Hematology, Wilhelminenspital , Vienna , Austria
| | - Jo Caers
- a Laboratory of Hematology , University of Liège, GIGA-I3 , Liège , Belgium.,d Division of Hematology, Department of Medicine , University and CHU of Liège , Liège , Belgium
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Reagan MR, Rosen CJ. Navigating the bone marrow niche: translational insights and cancer-driven dysfunction. Nat Rev Rheumatol 2015; 12:154-68. [PMID: 26607387 DOI: 10.1038/nrrheum.2015.160] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The bone marrow niche consists of stem and progenitor cells destined to become mature cells such as haematopoietic elements, osteoblasts or adipocytes. Marrow cells, influenced by endocrine, paracrine and autocrine factors, ultimately function as a unit to regulate bone remodelling and haematopoiesis. Current evidence highlights that the bone marrow niche is not merely an anatomic compartment; rather, it integrates the physiology of two distinct organ systems, the skeleton and the marrow. The niche has a hypoxic microenvironment that maintains quiescent haematopoietic stem cells (HSCs) and supports glycolytic metabolism. In response to biochemical cues and under the influence of neural, hormonal, and biochemical factors, marrow stromal elements, such as mesenchymal stromal cells (MSCs), differentiate into mature, functioning cells. However, disruption of the niche can affect cellular differentiation, resulting in disorders ranging from osteoporosis to malignancy. In this Review, we propose that the niche reflects the vitality of two tissues - bone and blood - by providing a unique environment for stem and stromal cells to flourish while simultaneously preventing disproportionate proliferation, malignant transformation or loss of the multipotent progenitors required for healing, functional immunity and growth throughout an organism's lifetime. Through a fuller understanding of the complexity of the niche in physiologic and pathologic states, the successful development of more-effective therapeutic approaches to target the niche and its cellular components for the treatment of rheumatic, endocrine, neoplastic and metabolic diseases becomes achievable.
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Affiliation(s)
- Michaela R Reagan
- Center for Molecular Medicine, Maine Medical Centre Research Institute, 81 Research Drive, Scarborough, Maine 04074, USA
| | - Clifford J Rosen
- Center for Molecular Medicine, Maine Medical Centre Research Institute, 81 Research Drive, Scarborough, Maine 04074, USA
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Hinge M, Delaisse JM, Plesner T, Clasen-Linde E, Salomo M, Andersen TL. High-dose therapy improves the bone remodelling compartment canopy coverage and bone formation in multiple myeloma. Br J Haematol 2015. [PMID: 26212720 DOI: 10.1111/bjh.13584] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Bone loss in multiple myeloma (MM) is caused by an uncoupling of bone formation to resorption trigged by malignant plasma cells. Increasing evidence indicates that the bone remodelling compartment (BRC) canopy, which normally covers the remodelling sites, is important for coupled bone remodelling. Loss of this canopy has been associated with bone loss. This study addresses whether the bone remodelling in MM is improved by high-dose therapy. Bone marrow biopsies obtained from 20 MM patients, before and after first-line treatment with high-dose melphalan followed by autologous stem cell transplantation, and from 20 control patients with monoclonal gammopathy of undetermined significance were histomorphometrically investigated. This investigation confirmed that MM patients exhibited uncoupled bone formation to resorption and reduced canopy coverage. More importantly, this study revealed that a good response to anti-myeloma treatment increased the extent of formative bone surfaces with canopy, and reduced the extent of eroded surfaces without canopy, reverting the uncoupled bone remodelling, while improving canopy coverage. The association between improved coupling and the canopy coverage supports the notion that canopies are critical for the coupling of bone formation to resorption. Furthermore, this study supports the observation that systemic bone disease in MM can be reversed in MM patients responding to anti-myeloma treatment.
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Affiliation(s)
- Maja Hinge
- Department of Clinical Cell Biology, Vejle/Lillebaelt Hospital, Institute of Regional Health Research, University of Southern Denmark, Vejle, Denmark.,Department of Internal Medicine, Section of Haematology, Vejle/Lillebaelt Hospital, Institute of Regional Health Research, University of Southern Denmark, Vejle, Denmark
| | - Jean-Marie Delaisse
- Department of Clinical Cell Biology, Vejle/Lillebaelt Hospital, Institute of Regional Health Research, University of Southern Denmark, Vejle, Denmark
| | - Torben Plesner
- Department of Internal Medicine, Section of Haematology, Vejle/Lillebaelt Hospital, Institute of Regional Health Research, University of Southern Denmark, Vejle, Denmark
| | | | - Morten Salomo
- Department of Haematology, Rigshospitalet, Copenhagen, Denmark
| | - Thomas Levin Andersen
- Department of Clinical Cell Biology, Vejle/Lillebaelt Hospital, Institute of Regional Health Research, University of Southern Denmark, Vejle, Denmark
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