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Panos JA, Coenen MJ, Nagelli CV, McGlinch EB, Atasoy-Zeybek A, De Padilla CL, Coghlan RF, Johnstone B, Ferreira E, Porter RM, De la Vega RE, Evans CH. IL-1Ra gene transfer potentiates BMP2-mediated bone healing by redirecting osteogenesis toward endochondral ossification. Mol Ther 2023; 31:420-434. [PMID: 36245128 PMCID: PMC9931547 DOI: 10.1016/j.ymthe.2022.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 09/14/2022] [Accepted: 10/14/2022] [Indexed: 11/05/2022] Open
Abstract
An estimated 100,000 patients each year in the United States suffer severe disability from bone defects that fail to heal, a condition where bone-regenerative therapies could provide substantial clinical benefits. Although recombinant human bone morphogenetic protein-2 (rhBMP2) is an osteogenic growth factor that is clinically approved for this purpose, it is only effective when used at exceedingly high doses that incur substantial costs, induce severe inflammation, produce adverse side effects, and form morphologically abnormal bone. Using a validated rat femoral segmental defect model, we show that bone formed in response to clinically relevant doses of rhBMP2 is accompanied by elevated expression of interleukin-1 (IL-1). Local delivery of cDNA encoding the IL-1 receptor antagonist (IL-1Ra) achieved bridging of segmental, critical size defects in bone with a 90% lower dose of rhBMP2. Unlike use of high-dose rhBMP2, bone formation in the presence of IL-1Ra occurred via the native process of endochondral ossification, resulting in improved quality without sacrificing the mechanical properties of the regenerated bone. Our results demonstrate that local immunomodulation may permit effective use of growth factors at lower doses to recapitulate more precisely the native biology of healing, leading to higher-quality tissue regeneration.
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Affiliation(s)
- Joseph A Panos
- Rehabilitation Medicine Research Center, Mayo Clinic, Rochester, MN, USA; Musculoskeletal Gene Therapy Research Laboratory, Mayo Clinic, Rochester, MN, USA; Graduate School of Biomedical Sciences, Mayo Clinic, Rochester, MN, USA; Medical Scientist Training Program, Mayo Clinic, Rochester, MN, USA
| | - Michael J Coenen
- Rehabilitation Medicine Research Center, Mayo Clinic, Rochester, MN, USA; Musculoskeletal Gene Therapy Research Laboratory, Mayo Clinic, Rochester, MN, USA
| | - Christopher V Nagelli
- Rehabilitation Medicine Research Center, Mayo Clinic, Rochester, MN, USA; Musculoskeletal Gene Therapy Research Laboratory, Mayo Clinic, Rochester, MN, USA
| | - Erin B McGlinch
- Rehabilitation Medicine Research Center, Mayo Clinic, Rochester, MN, USA; Musculoskeletal Gene Therapy Research Laboratory, Mayo Clinic, Rochester, MN, USA; Graduate School of Biomedical Sciences, Mayo Clinic, Rochester, MN, USA; Virology and Gene Therapy Graduate Program, Mayo Clinic, Rochester, MN, USA
| | - Aysegul Atasoy-Zeybek
- Rehabilitation Medicine Research Center, Mayo Clinic, Rochester, MN, USA; Musculoskeletal Gene Therapy Research Laboratory, Mayo Clinic, Rochester, MN, USA
| | - Consuelo Lopez De Padilla
- Rehabilitation Medicine Research Center, Mayo Clinic, Rochester, MN, USA; Musculoskeletal Gene Therapy Research Laboratory, Mayo Clinic, Rochester, MN, USA
| | - Ryan F Coghlan
- Research Center, Shriners Hospitals for Children, Portland, OR, USA
| | - Brian Johnstone
- Research Center, Shriners Hospitals for Children, Portland, OR, USA; Department of Orthopedics and Rehabilitation, Oregon Health & Science University, Portland, OR, USA
| | - Elisabeth Ferreira
- Center for Musculoskeletal Disease Research, Departments of Internal Medicine and Orthopedic Surgery, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Ryan M Porter
- Center for Musculoskeletal Disease Research, Departments of Internal Medicine and Orthopedic Surgery, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Rodolfo E De la Vega
- Rehabilitation Medicine Research Center, Mayo Clinic, Rochester, MN, USA; Musculoskeletal Gene Therapy Research Laboratory, Mayo Clinic, Rochester, MN, USA; Department of Cell Biology-Inspired Tissue Engineering, MERLN Institute, Maastricht, the Netherlands
| | - Christopher H Evans
- Rehabilitation Medicine Research Center, Mayo Clinic, Rochester, MN, USA; Musculoskeletal Gene Therapy Research Laboratory, Mayo Clinic, Rochester, MN, USA.
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Dong Y, Zhou H, Alhaskawi A, Wang Z, Lai J, Abdullah Ezzi SH, Kota VG, Abdulla Hasan Abdulla MH, Sun Z, Lu H. Alterations in bone fracture healing associated with TNFRSF signaling pathways. Front Pharmacol 2022; 13:905535. [PMID: 36324677 PMCID: PMC9621617 DOI: 10.3389/fphar.2022.905535] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 10/03/2022] [Indexed: 11/29/2022] Open
Abstract
Bone fracture healing is a complex process involving various signaling pathways. It remains an unsolved issue the fast and optimal management of complex or multiple fractures in the field of orthopedics and rehabilitation. Bone fracture healing is largely a four-stage process, including initial hematoma formation, intramembrane ossification, chondrogenesis, and endochondral ossification followed by further bone remodeling. Many studies have reported the involvement of immune cells and cytokines in fracture healing. On the other hand, the Tumor Necrosis Factor (TNF) family and TNF receptor superfamily (TNFRSF) play a pivotal role in many physiological processes. The functions of the TNF family and TNFRSF in immune processes, tissue homeostasis, and cell differentiation have been extensively studied by many groups, and treatments targeting specific TNFRSF members are in progress. In terms of bone fracture management, it has been discovered that several members of TNFRSF have very distinct functions in different stages of fracture healing, including TNFR1, TNFR2, and receptor activator of nuclear factor kappa-B (RANK) pathways. More specifically, TNFR1 is associated with osteoclastogenesis and TNFR2 is associated with osteogenic differentiation, while RANK is in association with bone remodeling. In this review, we will discuss and summarize the involvement of members of TNFRSF including TNFR1, TNFR2, and Receptor activator of nuclear factor kappa-B (RANK) pathways in different stages of fracture healing and bone remodeling and the current treatment trend involving TNFRSF agonists and antagonists.
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Affiliation(s)
- Yanzhao Dong
- Department of Orthopedics, B Department of Rehabilitation Medicine, the First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Haiying Zhou
- Department of Orthopedics, B Department of Rehabilitation Medicine, the First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Ahmad Alhaskawi
- Department of Orthopedics, B Department of Rehabilitation Medicine, the First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Zewei Wang
- Zhejiang University School of Medicine, Hangzhou, China
| | - Jingtian Lai
- Zhejiang University School of Medicine, Hangzhou, China
| | | | | | | | - Zhenyu Sun
- Department of Orthopedics, B Department of Rehabilitation Medicine, the First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Hui Lu
- Department of Orthopedics, B Department of Rehabilitation Medicine, the First Affiliated Hospital, Zhejiang University, Hangzhou, China
- Alibaba-Zhejiang University Joint Research Center of Future Digital Healthcare, Zhejiang University, Hangzhou, China
- *Correspondence: Hui Lu,
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Crotti C, Becciolini A, Biggioggero M, Favalli EG. Vitamin D and Spondyloarthritis: Review of the Literature. Open Rheumatol J 2018. [DOI: 10.2174/1874312901812010214] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Background:
Spondyloarthritides (SpAs) encompass heterogeneous diseases sharing similar genetic background, pathogenic mechanisms, and phenotypic features. Vitamin D is essential for calcium metabolism and skeletal homeostasis. Some recent evidences reported supplemental functions of vitamin D, such as modulation of inflammatory reactions.
Objective:
To analyze published data about a possible association between vitamin D and SpAs.
Results:
Vitamin D could play a role in immune reactions, influencing both immune and adaptive response. Vitamin D deficiency is more frequent in SpAs than in general population: an active and more severe disease infers patients’ mobility and reduces sunlight exposure. Quiescent inflammatory bowel disease, frequently associated with SpAs, could worsen vitamin D deficiency. All the parameters related to UVB exposure are the most important determinants for vitamin D status and need to be considered evaluating the vitamin D levels in SpAs.
Apart from musculoskeletal problems, patients affected by SpAs frequently suffer from other comorbidities, especially cardiovascular diseases and osteoporosis, and vitamin D status could have a relevance in this field. Bone is involved in SpAs with a dualistic role, coexisting trabecular bone resorption and new bone formation.
It seems rational to monitor vitamin D levels in SpA subjects and to target it to global health threshold.
Conclusion:
Literature data were not completely in agreement about a possible relation between poor vitamin D status and onset or worse disease course of SpAs. In fact, these results come from cross-sectional studies, which affect our ability to infer causality. Therefore, large, randomized controlled trials are needed.
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Bijelić N, Belovari T, Stolnik D, Lovrić I, Baus Lončar M. Histomorphometric Parameters of the Growth Plate and Trabecular Bone in Wild-Type and Trefoil Factor Family 3 (Tff3)-Deficient Mice Analyzed by Free and Open-Source Image Processing Software. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2017; 23:818-825. [PMID: 28784196 DOI: 10.1017/s1431927617000630] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Trefoil factor family 3 (Tff3) peptide is present during intrauterine endochondral ossification in mice, and its deficiency affects cancellous bone quality in secondary ossification centers of mouse tibiae. The aim of this study was to quantitatively analyze parameters describing the growth plate and primary ossification centers in tibiae of 1-month-old wild-type and Tff3 knock-out mice (n=5 per genotype) by using free and open-source software. Digital photographs of the growth plates and trabecular bone were processed by open-source computer programs GIMP and FIJI. Histomorphometric parameters were calculated using measurements made with FIJI. Tff3 knock-out mice had significantly smaller trabecular number and significantly larger trabecular separation. Trabecular bone volume, trabecular bone surface, and trabecular thickness showed no significant difference between the two groups. Although such histomorphological differences were found in the cancellous bone structure, no significant differences were found in the epiphyseal plate histomorphology. Tff3 peptide probably has an effect on the formation and quality of the cancellous bone in the primary ossification centers, but not through disrupting the epiphyseal plate morphology. This work emphasizes the benefits of using free and open-source programs for morphological studies in life sciences.
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Affiliation(s)
- Nikola Bijelić
- 1Department of Histology and Embryology, Faculty of Medicine,University of Osijek,J. Huttlera 4,31000 Osijek,Croatia
| | - Tatjana Belovari
- 1Department of Histology and Embryology, Faculty of Medicine,University of Osijek,J. Huttlera 4,31000 Osijek,Croatia
| | - Dunja Stolnik
- 2Public Health Centre Vinkovci,Kralja Zvonimira 53,32100 Vinkovci,Croatia
| | - Ivana Lovrić
- 1Department of Histology and Embryology, Faculty of Medicine,University of Osijek,J. Huttlera 4,31000 Osijek,Croatia
| | - Mirela Baus Lončar
- 3Department of Molecular Medicine,Institute Ruđer Bošković,Bijenička 54,10000 Zagreb,Croatia
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Eaton GJ, Zhang QS, Diallo C, Matsuzawa A, Ichijo H, Steinbeck MJ, Freeman TA. Inhibition of apoptosis signal-regulating kinase 1 enhances endochondral bone formation by increasing chondrocyte survival. Cell Death Dis 2014; 5:e1522. [PMID: 25393478 PMCID: PMC4260738 DOI: 10.1038/cddis.2014.480] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 10/07/2014] [Indexed: 11/20/2022]
Abstract
Endochondral ossification is the result of chondrocyte differentiation, hypertrophy,
death and replacement by bone. The careful timing and progression of this process is
important for normal skeletal bone growth and development, as well as fracture
repair. Apoptosis Signal-Regulating Kinase 1 (ASK1) is a mitogen-activated protein
kinase (MAPK), which is activated by reactive oxygen species and other cellular
stress events. Activation of ASK1 initiates a signaling cascade known to regulate
diverse cellular events including cytokine and growth factor signaling, cell cycle
regulation, cellular differentiation, hypertrophy, survival and apoptosis. ASK1 is
highly expressed in hypertrophic chondrocytes, but the role of ASK1 in skeletal
tissues has not been investigated. Herein, we report that ASK1 knockout (KO) mice
display alterations in normal growth plate morphology, which include a shorter
proliferative zone and a lengthened hypertrophic zone. These changes in growth plate
dynamics result in accelerated long bone mineralization and an increased formation of
trabecular bone, which can be attributed to an increased resistance of terminally
differentiated chondrocytes to undergo cell death. Interestingly, under normal cell
culture conditions, mouse embryonic fibroblasts (MEFs) derived from ASK1 KO mice show
no differences in either MAPK signaling or osteogenic or chondrogenic differentiation
when compared with wild-type (WT) MEFs. However, when cultured with stress
activators, H2O2 or staurosporine, the KO cells show enhanced
survival, an associated decrease in the activation of proteins involved in death
signaling pathways and a reduction in markers of terminal differentiation.
Furthermore, in both WT mice treated with the ASK1 inhibitor, NQDI-1, and ASK1 KO
mice endochondral bone formation was increased in an ectopic ossification model.
These findings highlight a previously unrealized role for ASK1 in regulating
endochondral bone formation. Inhibition of ASK1 has clinical potential to treat
fractures or to slow osteoarthritic progression by enhancing chondrocyte survival and
slowing hypertrophy.
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Affiliation(s)
- G J Eaton
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Q-S Zhang
- 1] Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, PA 19107, USA [2] Department of Spine Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, PR China
| | - C Diallo
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - A Matsuzawa
- Laboratory of Cell Signaling, University of Tokyo, Tokyo 113-0033, Japan
| | - H Ichijo
- Open Innovation Center for Drug Discovery, University of Tokyo, Tokyo 113-0033, Japan
| | - M J Steinbeck
- School of Biomedical Engineering, Science & Health Systems, Drexel University, Philadelphia, PA 19104, USA
| | - T A Freeman
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, PA 19107, USA
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Abstract
In cross-sectional studies, vitamin D deficiency is frequent in spondyloarthritic patients and associated with increased spondyloarthritis (SpA) activity and structural damage. Experimental studies also show that vitamin D interferes with molecular pathways critically involved in SpA, especially regarding entheseal inflammation and ossification (involving cytokines such as IL-23 and sclerostin). Vitamin D deficiency might also affect the course of the disease through periodontal and gut inflammation, leading to increased functional impairment. Therefore, Vitamin D receptor selective agonists could represent a promising therapeutic pathway in this pathology. Randomised-controlled intervention studies are required in order to further elucidate complex relationships between vitamin D deficiency and SpA.
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Affiliation(s)
- Xavier Guillot
- Department of rheumatology, Besançon University Hospital, Boulevard Fleming, 25030, Besançon, France
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Bijelić N, Belovari T, Baus Lončar M. Trefoil factor family protein 3 (TFF3) is present in cartilage during endochondral ossification in the developing mouse fetus. Acta Histochem 2013; 115:204-8. [PMID: 22818426 DOI: 10.1016/j.acthis.2012.06.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Revised: 06/21/2012] [Accepted: 06/25/2012] [Indexed: 01/25/2023]
Abstract
Trefoil factor family protein 3 (TFF3) is found in cartilage affected by osteoarthritis and septic arthritis, whereas no TFF3 presence is observed in healthy cartilage. During endochondral ossification, bone tissue replaces degenerating cartilage. There is no data about the role of TFF3 in this process. Our aim was to study the localization of TFF3 in cartilage during endochondral ossification in the mouse fetus. CD1 mouse fetuses, days 14-17, were isolated, fixed, and paraffin embedded. Fetuses were cut into 6μm sections, and processed for immunohistochemical staining with affinity purified polyclonal rabbit anti-TFF3 antibody. TFF3 was present in cartilage chondrocytes undergoing endochondral ossification, particularly in zone of proliferation, hypertrophy and calcification as well as in zone of cartilage degeneration during the monitored fetal period. Resting cartilage showed no presence of TFF3, while during endochondral ossification TFF3 localization showed an analogous pattern to that reported in cartilage affected by osteoarthritis and septic arthritis. Our data indicate that the role of TFF3 in these pathological conditions is similar to its role in the physiological process of endochondral ossification.
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8
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Wahl EC, Aronson J, Liu L, Skinner RA, Miller MJ, Cockrell GE, Fowlkes JL, Thrailkill KM, Bunn RC, Ronis MJJ, Lumpkin CK. Direct bone formation during distraction osteogenesis does not require TNFalpha receptors and elevated serum TNFalpha fails to inhibit bone formation in TNFR1 deficient mice. Bone 2010; 46:410-7. [PMID: 19772956 PMCID: PMC2818239 DOI: 10.1016/j.bone.2009.09.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2009] [Revised: 09/10/2009] [Accepted: 09/11/2009] [Indexed: 10/20/2022]
Abstract
Distraction osteogenesis (DO) is a process which induces direct new bone formation as a result of mechanical distraction. Tumor necrosis factor-alpha (TNF) is a cytokine that can modulate osteoblastogenesis. The direct effects of TNF on direct bone formation in rodents are hypothetically mediated through TNF receptor 1 and/or 2 (TNFR1/2) signaling. We utilized a unique model of mouse DO to assess the effects of 1) TNFR homozygous null gene alterations on direct bone formation and 2) rmTNF on wild type (WT), TNFR1(-/-) (R1KO), and TNR2(-/-) (R2KO) mice. Radiological and histological analyses of direct bone formation in the distraction gaps demonstrated no significant differences between the WT, R1KO, R2KO, or TNFR1(-/-) and R2(-/-) (R1 and 2KO) mice. R1 and 2KO mice had elevated levels of serum TNF but demonstrated no inhibition of new bone formation. Systemic administration by osmotic pump of rmTNF during DO (10 microg/kg/day) resulted in significant inhibition of gap bone formation measures in WT and R2KO mice, but not in R1KO mice. We conclude that exogenous rmTNF and/or endogenous TNF act to inhibit new bone formation during DO by signaling primarily through TNFR1.
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Affiliation(s)
- Elizabeth C Wahl
- Laboratory for Limb Regeneration Research, Arkansas Children's Hospital Research Institute, Little Rock, AR, USA
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James CG, Stanton LA, Agoston H, Ulici V, Underhill TM, Beier F. Genome-wide analyses of gene expression during mouse endochondral ossification. PLoS One 2010; 5:e8693. [PMID: 20084171 PMCID: PMC2805713 DOI: 10.1371/journal.pone.0008693] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2009] [Accepted: 12/13/2009] [Indexed: 12/24/2022] Open
Abstract
Background Endochondral ossification is a complex process involving a series of events that are initiated by the establishment of a chondrogenic template and culminate in its replacement through the coordinated activity of osteoblasts, osteoclasts and endothelial cells. Comprehensive analyses of in vivo gene expression profiles during these processes are essential to obtain a complete understanding of the regulatory mechanisms involved. Methodology/Principal Findings To address these issues, we completed a microarray screen of three zones derived from manually segmented embryonic mouse tibiae. Classification of genes differentially expressed between each respective zone, functional categorization as well as characterization of gene expression patterns, cytogenetic loci, signaling pathways and functional motifs both confirmed reported data and provided novel insights into endochondral ossification. Parallel comparisons of the microdissected tibiae data set with our previously completed micromass culture screen further corroborated the suitability of micromass cultures for modeling gene expression in chondrocyte development. The micromass culture system demonstrated striking similarities to the in vivo microdissected tibiae screen; however, the micromass system was unable to accurately distinguish gene expression differences in the hypertrophic and mineralized zones of the tibia. Conclusions/Significance These studies allow us to better understand gene expression patterns in the growth plate and endochondral bones and provide an important technical resource for comparison of gene expression in diseased or experimentally-manipulated cartilages. Ultimately, this work will help to define the genomic context in which genes are expressed in long bones and to understand physiological and pathological ossification.
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Affiliation(s)
- Claudine G. James
- CIHR Group in Skeletal Development and Remodelling, Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Canada
| | - Lee-Anne Stanton
- CIHR Group in Skeletal Development and Remodelling, Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Canada
| | - Hanga Agoston
- CIHR Group in Skeletal Development and Remodelling, Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Canada
| | - Veronica Ulici
- CIHR Group in Skeletal Development and Remodelling, Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Canada
- * E-mail: (VU); (FB)
| | - T. Michael Underhill
- Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - Frank Beier
- CIHR Group in Skeletal Development and Remodelling, Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Canada
- * E-mail: (VU); (FB)
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Knothe Tate ML, Falls TD, McBride SH, Atit R, Knothe UR. Mechanical modulation of osteochondroprogenitor cell fate. Int J Biochem Cell Biol 2008; 40:2720-38. [PMID: 18620888 DOI: 10.1016/j.biocel.2008.05.011] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2007] [Revised: 05/01/2008] [Accepted: 05/04/2008] [Indexed: 12/27/2022]
Abstract
Mesenchymal cells are natural tissue builders. They exhibit an extraordinary capacity to metamorphize into differentiated cells, using extrinsic spatial and temporal inputs and intrinsic algorithms, as well as to build and adapt their own habitat. In addition to providing a habitat for osteoprogenitor cells, tissues of the skeletal system provide mechanical support and protection for the multiple organs of vertebrate organisms. This review examines the role of mechanics on determination of cell fate during pre-, peri- and postnatal development of the skeleton as well as during tissue genesis and repair in postnatal life. The role of cell mechanics is examined and brought into context of intrinsic cues during mesenchymal condensation. Remarkable new insights regarding structure function relationships in mesenchymal stem cells, and their influence on determination of cell fate are integrated in the context of de novo tissue generation and postnatal repair. Key differences in the formation of osteogenic and chondrogenic condensations are discussed in relation to direct intramembranous and indirect endochondral ossification. New approaches are discussed to elucidate and exploit extrinsic cues to generate tissues in the laboratory and in the clinic.
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Affiliation(s)
- Melissa L Knothe Tate
- Department of Biomedical Engineering, Wickenden 307, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA.
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11
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De Bari C, Dell'accio F. Mesenchymal stem cells in rheumatology: a regenerative approach to joint repair. Clin Sci (Lond) 2007; 113:339-48. [PMID: 17824847 DOI: 10.1042/cs20070126] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The advent of biologics in rheumatology has considerably changed the evolution and prognosis of chronic inflammatory arthritis. The success of these new treatments has contributed to steering more attention to research focussed on repair and remodelling of joint tissues. Indeed, when the tissue damage is established, treatment options are very limited and the risk of progression towards joint destruction and failure remains high. Increasing evidence indicates that mesenchymal stem cells persist postnatally within joint tissues. It is postulated that they would function to safeguard joint homoeostasis and guarantee tissue remodelling and repair throughout life. Alterations in mesenchymal stem cell biology in arthritis have indeed been reported but a causal relationship has not been demonstrated, mainly because our current knowledge of mesenchymal stem cell niches and functions within the joint in health and disease is very limited. Nonetheless, mesenchymal stem cell technologies have attracted the attention of the biomedical research community as very promising tools to achieve the repair of joint tissues such as articular cartilage, subchondral bone, menisci and tendons. This review will outline stem-cell-mediated strategies for the repair of joint tissues, spanning from the use of expanded mesenchymal stem cell populations to therapeutic targeting of endogenous stem cells, resident in their native tissues, and related reparative signals in traumatic, degenerative and inflammatory joint disorders.
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Affiliation(s)
- Cosimo De Bari
- Department of Rheumatology, King's College London, London, UK.
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12
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Mukai T, Otsuka F, Otani H, Yamashita M, Takasugi K, Inagaki K, Yamamura M, Makino H. TNF-α inhibits BMP-induced osteoblast differentiation through activating SAPK/JNK signaling. Biochem Biophys Res Commun 2007; 356:1004-10. [PMID: 17397798 DOI: 10.1016/j.bbrc.2007.03.099] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2007] [Accepted: 03/16/2007] [Indexed: 10/23/2022]
Abstract
The cellular mechanism by which TNF-alpha inhibits osteoblastic differentiation induced by BMPs was investigated using mouse myoblast C2C12 cells expressing functional BMP receptors and Smad signaling molecules except ALK-6. Osteoblast transformation in response to BMP-2 was morphologically suppressed by TNF-alpha. Expression of biological markers for osteoblasts including Runx2 and osteocalcin, alkaline phosphatase activity, and parathyroid hormone (PTH) responsiveness shown by PTH-induced cAMP production were readily activated by BMP-2, -4, -6, and -7. The BMP-induced osteoblastic phenotype was dose-dependently inhibited by TNF-alpha. BMP-induced Smad1,5,8 phosphorylation of C2C12 cells was suppressed by TNF-alpha signaling. In addition, cDNA array analysis showed an increased expression of inhibitory Smad6 by TNF-alpha. MAP kinase analysis showed that ERK1/ERK2 and SAPK/JNK phosphorylation were selectively activated by TNF-alpha regardless of the presence of BMP ligands. BMPs had no effect on expression levels of TNF type 1 and 2 receptors. Notably, inhibition of SAPK/JNK restored TNF-alpha effects on BMP-induced osteoblast differentiation demonstrated by Id-1-promoter activity as well as Runx2 and osteocalcin mRNA levels. Collectively, TNF-alpha elicits BMP-induced osteogenic inhibition by suppressing BMP-Smad signaling pathway, at least in part, through SAPK/JNK activation and Smad6 upregulation.
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Affiliation(s)
- Tomoyuki Mukai
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama City 700-8558, Japan
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13
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Lories RJU, Derese I, de Bari C, Luyten FP. Evidence for uncoupling of inflammation and joint remodeling in a mouse model of spondylarthritis. ACTA ACUST UNITED AC 2007; 56:489-97. [PMID: 17265484 DOI: 10.1002/art.22372] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE To study the relationship between inflammation and remodeling by inhibiting tumor necrosis factor alpha (TNFalpha) in male DBA/1 mice with spontaneous arthritis, a model of spondylarthritis (SpA). METHODS TNFalpha was inhibited using etanercept, a soluble TNF receptor. The efficacy of the dose used (25 micro g/mouse) was confirmed in methylated bovine serum albumin (mBSA)-induced monarthritis, a model of inflammation-driven joint destruction. Male DBA/1 mice with spontaneous arthritis were caged together from the age of 10 weeks onward and were treated twice weekly with etanercept. The incidence and clinical severity of disease were recorded. Mice were killed at age 25 weeks, and histomorphologic analysis was performed. The presence of TNFalpha, NF-kappaB, and Smad signaling was studied using immunohistochemistry. Entheseal endochondral bone formation was modeled using micromass cultures of periosteal cells. RESULTS Etanercept inhibited mouse TNFalpha in vitro and in vivo. Etanercept treatment of mBSA-induced arthritis had a significant effect on the severity of disease. Etanercept did not affect the incidence or severity of spontaneous arthritis. Pathologic analysis revealed no differences between etanercept-treated and phosphate buffered saline-treated mice. TNFalpha-positive cells were observed in the synovium, in vessel-associated cells, in fibrocartilage, and in new cartilage. Activation of Smad signaling was observed in earlier stages of disease than was active NF-kappaB signaling. TNFalpha inhibited chondrogenesis in the micromass model. CONCLUSION Inhibition of TNF did not affect the severity and incidence of joint ankylosis in a mouse model of SpA. Therefore, the process of entheseal ankylosis may be independent of TNF. New tissue formation in SpA could be considered an additional and specific therapeutic target.
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Abstract
Pathologic new bone formation occurs in response to a variety of stimuli. Heterotopic and orthotopic bone formation can interfere with the normal function of the joint and can contribute to disability in inflammatory joint diseases. Syndesmophyte formation and progressive ankylosis are characteristic features of spondyloarthropathies, including psoriatic arthritis and ankylosing spondylitis, and they can be regarded as abnormal bone remodeling. Successful blocking of inflammation in patients with spondyloarthropathy apparently fails to halt progression of ankylosis in cohort studies. This suggests that though they may be linked in some way, bone formation and inflammation are largely independent phenomena. Indeed, new bone formation also occurs in diseases such as osteoarthritis and diffuse idiopathic skeletal hyperostosis. Therefore, therapeutic strategies in spondyloarthropathy ideally should control both inflammation and bone formation.
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Affiliation(s)
- Kurt de Vlam
- University Hospitals Leuven, Division of Rheumatology, Herestraat 49, B-3000 Leuven, Belgium.
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Singhatanadgit W, Salih V, Olsen I. Bone morphogenetic protein receptors and bone morphogenetic protein signaling are controlled by tumor necrosis factor-α in human bone cells. Int J Biochem Cell Biol 2006; 38:1794-807. [PMID: 16797218 DOI: 10.1016/j.biocel.2006.05.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2006] [Revised: 05/03/2006] [Accepted: 05/03/2006] [Indexed: 11/24/2022]
Abstract
Bone morphogenetic proteins (BMP) stimulate osteoblast differentiation by signal transduction via three BMP receptors (BMPR-IA, -IB and -II), whereas the inflammatory cytokine tumor necrosis factor-alpha (TNF-alpha) has been shown to suppress osteoblast differentiation. Although the mechanisms which regulate the BMPR are not yet known, it is possible that they may be negatively controlled by TNF-alpha, thereby inhibiting BMP-induced osteoblast differentiation. To test this hypothesis, we have examined the effects of TNF-alpha on BMPR-IA, -IB and -II expression and the functional consequences of this cytokine on BMPR-mediated functions in human bone cells. The results showed that although TNF-alpha down-regulated BMPR-IA and -II transcripts, it increased the level of BMPR-IB mRNA via a MAPK-dependent pathway. In marked contrast, however, TNF-alpha nevertheless caused marked down-regulation of the expression of the BMPR-IB surface antigen specifically. Moreover, the cytokine-induced decrease in BMPR-IB expression was found to be associated with the concurrent presence of a 'soluble' form of this antigen in supernatants of TNF-alpha-treated cultures. Furthermore, the TNF-alpha-induced loss of BMPR-IB was found to ablate BMP-2-stimulated bone cell functions, including phosphorylation of Smad1/5/8, alkaline phosphatase activity and osteocalcin expression. In conclusion, our study has provided evidence, for the first time, that BMPR can be differentially modulated by TNF-alpha at both the post-transcriptional and post-translational levels, with the TNF-alpha-induced shedding of the BMPR-IB antigen associated with a significantly diminished response to BMP-2 in vitro.
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Affiliation(s)
- W Singhatanadgit
- Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, 256 Gray's Inn Road, London WC1X 8LD, United Kingdom
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