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Assid E, Renshaw A, Samad M, Tupler R, Jones D. Long-Term Outcomes of Osteochondral Allograft with Osteogenic Protein-1 Augmentation: A Twelve-Year Follow-Up. Case Rep Orthop 2023; 2023:3842443. [PMID: 37789911 PMCID: PMC10545460 DOI: 10.1155/2023/3842443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/25/2023] [Accepted: 09/01/2023] [Indexed: 10/05/2023] Open
Abstract
Background Osteochondral lesions (OCLs) can significantly impact functional status and activities of daily living. Weightbearing joints are disproportionately affected due to considerable biomechanical forces in these areas. Various biologic reconstructive procedures such as microfracture, osteochondral autograft transfer (OATS) or allograft transplantation (OCA), and matrix-induced autologous chondrocyte implantation (MACI) are utilized by surgeons to treat OCLs. The integration of osteochondral allografts can restore knee function and maintain the integrity of adjacent joint surfaces. Bone incorporation has been linked to successful outcomes following OCA. Pulse lavage and carbon dioxide have been used to remove marrow elements from the superficial, middle, and deep layers of the allograft; this has been combined with the use of various biologics such as bone marrow aspirate or whole blood to augment donor bone incorporation into the host bone. We present an innovative augmentation approach in OCA transplantation demonstrating excellent incorporation of an osteogenic protein-1 (OP-1) implant (Stryker, Kalamazoo, MI) to treat a large fresh osteoarticular allograft. Case Presentation. We present a 51-year-old male who received OCA augmented with an OP-1 implant (Stryker, Kalamazoo, MI) in 2011. Due to subsequent ACL reconstruction for two years and medial meniscal repair four years following OCA transplantation, we were able to arthroscopically evaluate graft status at short- and intermediate-term follow-ups. Positive findings were further verified with radiographic imaging and patient-reported outcome measures (PROMs). Conclusion OP-1 implants aided in the bone incorporation of a large osteochondral allograft, restoring a high functional level in a demanding sport.
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Affiliation(s)
- Eric Assid
- Ochsner Health System, New Orleans, LA, USA
| | | | - Mawadah Samad
- The University of Queensland, Brisbane, Queensland, Australia
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Menger MM, Stief M, Scheuer C, Rollmann MF, Herath SC, Braun BJ, Ehnert S, Nussler AK, Menger MD, Laschke MW, Histing T. Diclofenac, a NSAID, delays fracture healing in aged mice. Exp Gerontol 2023; 178:112201. [PMID: 37169100 DOI: 10.1016/j.exger.2023.112201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 05/06/2023] [Accepted: 05/08/2023] [Indexed: 05/13/2023]
Abstract
Nonsteroidal anti-inflammatory drugs (NSAIDs), such as diclofenac, belong to the most prescribed analgesic medication after traumatic injuries. However, there is accumulating evidence that NSAIDs impair fracture healing. Because bone regeneration in aged patients is subject to significant changes in cell differentiation and proliferation as well as a markedly altered pharmacological action of drugs, we herein analyzed the effects of diclofenac on bone healing in aged mice using a stable closed femoral facture model. Thirty-three mice (male n = 14, female n = 19) received a daily intraperitoneal injection of diclofenac (5 mg/kg body weight). Vehicle-treated mice (n = 29; male n = 13, female n = 16) served as controls. Fractured mice femora were analyzed by means of X-ray, biomechanics, micro computed tomography (μCT), histology and Western blotting. Biomechanical analyses revealed a significantly reduced bending stiffness in diclofenac-treated animals at 5 weeks after fracture when compared to vehicle-treated controls. Moreover, the callus tissue in diclofenac-treated aged animals exhibited a significantly reduced amount of bone tissue and higher amounts of fibrous tissue. Further histological analyses demonstrated less lamellar bone after diclofenac treatment, indicating a delay in callus remodeling. This was associated with a decreased number of osteoclasts and an increased expression of osteoprotegerin (OPG) during the early phase of fracture healing. These findings indicate that diclofenac delays fracture healing in aged mice by affecting osteogenic growth factor expression and bone formation as well as osteoclast activity and callus remodeling.
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Affiliation(s)
- Maximilian M Menger
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tuebingen, BG Trauma Center Tuebingen, 72076 Tuebingen, Germany; Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg, Saar, Germany.
| | - Maximilian Stief
- Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg, Saar, Germany
| | - Claudia Scheuer
- Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg, Saar, Germany
| | - Mika F Rollmann
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tuebingen, BG Trauma Center Tuebingen, 72076 Tuebingen, Germany
| | - Steven C Herath
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tuebingen, BG Trauma Center Tuebingen, 72076 Tuebingen, Germany
| | - Benedikt J Braun
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tuebingen, BG Trauma Center Tuebingen, 72076 Tuebingen, Germany
| | - Sabrina Ehnert
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tuebingen, BG Trauma Center Tuebingen, 72076 Tuebingen, Germany; Department of Trauma and Reconstructive Surgery, BG Trauma Center Tuebingen, Siegfried Weller Institute for Trauma Research, Eberhard Karls University Tuebingen, 72076 Tuebingen, Germany
| | - Andreas K Nussler
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tuebingen, BG Trauma Center Tuebingen, 72076 Tuebingen, Germany; Department of Trauma and Reconstructive Surgery, BG Trauma Center Tuebingen, Siegfried Weller Institute for Trauma Research, Eberhard Karls University Tuebingen, 72076 Tuebingen, Germany
| | - Michael D Menger
- Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg, Saar, Germany
| | - Matthias W Laschke
- Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg, Saar, Germany
| | - Tina Histing
- Department of Trauma and Reconstructive Surgery, Eberhard Karls University Tuebingen, BG Trauma Center Tuebingen, 72076 Tuebingen, Germany
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Bloch A, Couture G, Isidor B, Ricquebourg M, Bourrat E, Lipsker D, Taillan B, Combier A, Chiaverini C, Moufle F, Delobel B, Richette P, Collet C. Novel pathogenic variants in SLCO2A1 causing autosomal dominant primary hypertrophic osteoarthropathy. Eur J Med Genet 2023; 66:104689. [PMID: 36549465 DOI: 10.1016/j.ejmg.2022.104689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/29/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022]
Abstract
Primary hypertrophic osteoarthropathy (PHO), or pachydermoperiostosis, is characterized by a clinical association including digital clubbing, periostosis and pachydermia. SLCO2A1 and HPGD genes are both responsible for PHO. The pathology is classically defined as an autosomal recessive disorder with clinical variability ranging from a mild to more severe phenotype. However, the hypothesis for an autosomal dominant form suggested for a long time was only demonstrated for the first time in 2021 for SLCO2A1. We aimed to detect a second pathogenic variant by a deep sequencing of the entire SLCO2A1 and HPGD genes, associated with functional transcription analysis in PHO patients harboring only one heterozygous variant. Among 10 PHO patients, 4 presented a single pathogenic or probably pathogenic novel variant in SLCO2A1 in heterozygous status (NM_005630.3: c.234+1G > A, c.1523_1524delCT, c.1625G > A and c.31delC), and the others carried homozygous pathogenic variants. For heterozygous forms, we found no additional pathogenic variant in HPGD or SLCO2A1. PHO can be a dominant form with age at disease onset later than that for the recessive form. This dominant form is not exceptional in young adults. In conclusion, both modes of inheritance of PHO explain the clinical variability and the difference in age at disease onset. Molecular analysis is especially required in the incomplete form to distinguish it from secondary hypertrophic osteoarthropathy.
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Affiliation(s)
- Adrien Bloch
- Département de Génétique, CHU Robert Debré, Université de Paris Cité, Paris, France
| | - Guillaume Couture
- Service de Rhumatologie, Hôpital Pierre-Paul Riquet, Toulouse, France
| | - Bertrand Isidor
- Service de Génétique Médicale, CHU de Nantes, Nantes, France
| | | | - Emmanuelle Bourrat
- Service de Dermatologie, CHU Saint-Louis, Université de Paris Cité, Paris, France
| | - Dan Lipsker
- Service de Dermatologie, CHU Strasbourg, Strasbourg, France
| | - Bruno Taillan
- Service de Médecine Interne, Centre Hospitalier Princesse Grâce, Monaco
| | - Alice Combier
- Service de Rhumatologie, Hôpital Cochin, Université de Paris Cité, Paris, France
| | | | - Frédérique Moufle
- Service de Médecine Générale, GH Est Francilien, site Coulommiers, Coulommiers, France
| | - Bruno Delobel
- Service de Cytogénétique, GH de l'Institut Catholique de Lille, Hopital Saint Vincent de Paul, Lille, France
| | - Pascal Richette
- Inserm1132, CHU Lariboisière, Paris, France; Service de Rhumatologie, CHU Lariboisière, Université de Paris Cité, Paris, France
| | - Corinne Collet
- Département de Génétique, CHU Robert Debré, Université de Paris Cité, Paris, France; Inserm1132, CHU Lariboisière, Paris, France.
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Liang X, Li SR, Zhang XX, He SH, Li SS, Li TF. Teriparatide prevented synovial inflammation and cartilage destruction in mice with DMM. Connect Tissue Res 2022; 64:274-284. [PMID: 36537662 DOI: 10.1080/03008207.2022.2157723] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
AIM Emerging data have demonstrated that low-grade inflammation in osteoarthritis, a long-held degenerative disease. The inflamed synovium produces various cytokines that induce cartilage destruction and joint pain. A previous study showed that teriparatide, an FDA approved anti-osteoporotic drug, may enhance cartilage repair. Our study focuses on its role in OA synovitis. MATERIALS AND METHODS Primary mouse articular chondrocytes were used to determine the most potent cytokines involved in OA inflammation and cartilage destruction. A destabilization of the medial meniscus mouse model was established to investigate the effect of teriparatide in OA, particularly, on synovial inflammation and cartilage degradation. RESULTS In vitro experiments showed that TNF-α was the most potent inducer of cartilage matrix-degrading enzymes, and that teriparatide antagonized the TNF-α of effect. Consistently, articular cartilage samples from TNF-α transgenic mice contained more MMP-13 positive chondrocytes than those from wild type mice. In addition, more type II collagen was cleaved in human OA cartilage than in normal cartilage samples. CONCLUSIONS Teriparatide can prevent synovitis and cartilage degradation by suppressing TNF-α mediated MMP-13 overexpression. Together with its chondroregenerative capability, teriparatide may be the first effective disease modifying osteoarthritis drug.
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Affiliation(s)
| | | | - Xin-Xin Zhang
- Department of Rheumatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Shi-Hao He
- Department of Rheumatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Shan-Shan Li
- Department of Rheumatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Tian-Fang Li
- Department of Rheumatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
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Sun Q, Zhang Y, Ding Y, Xie W, Li H, Li S, Li Y, Cai M. Inhibition of PGE2 in Subchondral Bone Attenuates Osteoarthritis. Cells 2022; 11:cells11172760. [PMID: 36078169 PMCID: PMC9454853 DOI: 10.3390/cells11172760] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/26/2022] [Accepted: 08/30/2022] [Indexed: 11/17/2022] Open
Abstract
Aberrant subchondral bone architecture is a crucial driver of the pathological progression of osteoarthritis, coupled with increased sensory innervation. The sensory PGE2/EP4 pathway is involved in the regulation of bone mass accrual by the induction of differentiation of mesenchymal stromal cells. This study aimed to clarify whether the sensory PGE2/EP4 pathway induces aberrant structural alteration of subchondral bone in osteoarthritis. Destabilization of the medial meniscus (DMM) using a mouse model was combined with three approaches: the treatment of celecoxib, capsaicin, and sensory nerve-specific prostaglandin E2 receptor 4 (EP4)-knockout mice. Cartilage degeneration, subchondral bone architecture, PGE2 levels, distribution of sensory nerves, the number of osteoprogenitors, and pain-related behavior in DMM mice were assessed. Serum and tissue PGE2 levels and subchondral bone architecture in a human sample were measured. Increased PGE2 is closely related to subchondral bone’s abnormal microstructure in humans and mice. Elevated PGE2 concentration in subchondral bone that is mainly derived from osteoblasts occurs in early-stage osteoarthritis, preceding articular cartilage degeneration in mice. The decreased PGE2 levels by the celecoxib or sensory denervation by capsaicin attenuate the aberrant alteration of subchondral bone architecture, joint degeneration, and pain. Selective EP4 receptor knockout of the sensory nerve attenuates the aberrant formation of subchondral bone and facilitates the prevention of cartilage degeneration in DMM mice. Excessive PGE2 in subchondral bone caused a pathological alteration to subchondral bone in osteoarthritis and maintaining the physiological level of PGE2 could potentially be used as an osteoarthritis treatment.
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Affiliation(s)
- Qi Sun
- Department of Orthopaedics, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai 200072, China
| | - Yuanzhen Zhang
- Department of Orthopaedics, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai 200072, China
| | - Yilan Ding
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Wenqing Xie
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Hengzhen Li
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Shaohua Li
- Department of Orthopaedics, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai 200072, China
| | - Yusheng Li
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
- Correspondence: (Y.L.); (M.C.); Tel.: +86-13975889696 (Y.L.); +86-13816147208 (M.C.); Fax: +86-073184327332 (Y.L.); +86-010-59367999 (M.C.)
| | - Ming Cai
- Department of Orthopaedics, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai 200072, China
- Correspondence: (Y.L.); (M.C.); Tel.: +86-13975889696 (Y.L.); +86-13816147208 (M.C.); Fax: +86-073184327332 (Y.L.); +86-010-59367999 (M.C.)
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6
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Wan H, Li C, Yang Y, Chen D. Loganin attenuates interleukin-1 β-induced chondrocyte inflammation, cartilage degeneration, and rat synovial inflammation by regulating TLR4/MyD88/NF-κB. J Int Med Res 2022; 50:3000605221104764. [PMID: 36000146 PMCID: PMC9421229 DOI: 10.1177/03000605221104764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Objective Inflammation plays a crucial part in osteoarthritis (OA) development. This
work aimed to explore loganin’s role and molecular mechanism in inflammation
and clarify its anti-inflammatory effects in OA treatment. Methods Chondrocytes were stimulated using interleukin (IL)-1β and loganin at two
concentrations (1 μM and 10 μM). Nitric oxide (NO) and prostaglandin E2
(PGE2) expression was assessed. Real-time polymerase chain reaction was used
to evaluate inducible NO synthase (iNOS), cyclooxygenase (COX)-2, IL-6, and
tumor necrosis factor (TNF)-α mRNA levels. Western blot was used to
investigate TLR4, MyD88, p-p65, and IκB-α expression. p65 nuclear
translocation, synovial inflammatory response, and cartilage degeneration
were also assessed. Results Loganin significantly reduced IL-1β-mediated PGE2, NO, iNOS, and COX-2
expression compared with that of the IL-1β stimulation group. The
TLR4/MyD88/NF-κB pathway was suppressed by loganin, which decreased
inflammatory cytokine (TNF-α and IL-6) levels compared with those of the
IL-1β stimulation group. Loganin inhibited IL-1β-mediated NF-κB p65 nuclear
translocation compared with that of the IL-1β stimulation group. Loganin
partially suppressed cartilage degeneration and the synovial inflammatory
response in vivo. Conclusion This work demonstrated that loganin inhibited IL-1β-mediated inflammation in
rat chondrocytes through TLR4/MyD88/NF-κB pathway regulation, thereby
reducing rat cartilage degeneration and the synovial inflammatory
response.
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Affiliation(s)
- Haishan Wan
- Emergency Trauma Department, The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, China
| | - Chaoyi Li
- Department of Joint Surgery, The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, China
| | - Yi Yang
- Department of Spinal Surgery, The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, China
| | - Dingzhong Chen
- Department of Spinal Surgery, The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, China
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Wang Y, Niu H, Liu Y, Yang H, Zhang M, Wang L. Promoting effect of long non-coding RNA SNHG1 on osteogenic differentiation of fibroblastic cells from the posterior longitudinal ligament by the microRNA-320b/IFNGR1 network. Cell Cycle 2020; 19:2836-2850. [PMID: 33017569 PMCID: PMC7714528 DOI: 10.1080/15384101.2020.1827188] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 08/13/2020] [Accepted: 08/18/2020] [Indexed: 01/24/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) have been noted to influence the progression of ossification of posterior longitudinal ligament (OPLL). The work aims to probe the effect of lncRNA SNHG1 on osteogenic differentiation of ligament fibroblastic cells (LFCs). Aberrantly expressed lncRNAs in ossified PLL tissues were screened out by microarray analysis. Gain- and loss-of function experiments of SNHG1 were performed to identify its role in osteogenic differentiation of LFCs. The downstream molecules of SNHG1 were explored. Altered expression of miR-320b was introduced in LFCs as well. The interactions among SNHG1, miR-320b and IFNGR1 were identified. Consequently, SNHG1 was found highly expressed in OPLL patients. Silencing of SNHG1 inhibited BMP-2, RUNX2 and OCN expression and the ALP activity and reduced osteogenic differentiation of LFCs. Importantly, SNHG1 could and upregulate IFNGR1 through serving as a sponge for miR-320b. Over-expression of miR-320b inhibited osteogenic differentiation of LFCs and inactivated the JAK/STAT signaling pathway. Further administration of Fedratinib, a JAK2-specific agonist, increased osteogenic differentiation of LFCs. To conclude, the study suggested that SNHG1 could upregulate IFNGR1 by sequestering miR-320b and activate the JAK/STAT signaling. Silencing of SNHG1 could reduce the osteogenic differentiation and mineralization of LFCs. The study may offer new insights into OPLL treatment.
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Affiliation(s)
- Yuqiang Wang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Huixia Niu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Yilin Liu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Hao Yang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Min Zhang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Limin Wang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P.R. China
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Effect of BMP-2 Adherent to Resorbable Sutures on Cartilage Repair: A Rat Model of Xyphoid Process. MATERIALS 2020; 13:ma13173764. [PMID: 32858861 PMCID: PMC7503754 DOI: 10.3390/ma13173764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/19/2020] [Accepted: 08/21/2020] [Indexed: 12/01/2022]
Abstract
Meniscal tears are often seen in orthopedic practice. The current strategy for meniscal repair has only had limited success with a relatively high incidence of re-operative rate. This study evaluates the therapeutic effects of Bone morphogenetic protein-2 (BMP-2) soaked sutures for cartilage repair, using a rat model of xyphoid healing. Vicryl-resorbable sutures were presoaked in BMP-2 solutions prior to animal experimentation. Rat xyphoid process (an avascular hyaline cartilage structure) was surgically ruptured followed by repair procedures with regular suture or with sutures that were pre-soaked in BMP-2 solutions. In vitro assessment indicated that presoaking the Vicryl-resorbable sutures with 10 µg/mL BMP-2 resulted in a sustained amount of the growth factor release up to 7 days. Histological analysis suggested that application of this BMP-2 soaked suture on the rat xyphoid process model significantly improved the avascular cartilage healing compared to non-soaked control sutures. In conclusion, data here confirm that the rat xyphoid process repair is a reproducible and inexpensive animal model for meniscus and other cartilage repair. More importantly, coating of BMP-2 on sutures appears a potential avenue to improve cartilage repair and regeneration. Further study is warranted to explore the molecular mechanisms of this strategy.
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Souza ATP, Lopes HB, Freitas GP, Ferraz EP, Oliveira FS, Almeida ALG, Weffort D, Beloti MM, Rosa AL. Role of embryonic origin on osteogenic potential and bone repair capacity of rat calvarial osteoblasts. J Bone Miner Metab 2020; 38:481-490. [PMID: 32078052 DOI: 10.1007/s00774-020-01090-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Accepted: 01/31/2020] [Indexed: 02/06/2023]
Abstract
INTRODUCTION The aim of this study was to evaluate the in vitro osteogenic potential of osteoblasts from neural crest-derived frontal bone (OB-NC) and mesoderm-derived parietal bone (OB-MS) and the bone formation induced by them when injected into calvarial defects. MATERIALS AND METHODS Calvarial bones were collected from newborn Wistar rats (3-day old) and characterized as frontal and parietal prior to OB-NC and OB-MS harvesting. The cells were cultured, and several parameters of osteoblast differentiation were evaluated. These cells, or PBS without cells (control), were locally injected into 5-mm rat calvarial defects (5 × 106 cells/defect) and after 4 weeks bone formation was evaluated by morphometric and histological analyses. RESULTS The characterization of frontal and parietal bones assured the different embryonic origin of both cell populations, OB-NC and OB-MS. The OB-NC presented higher proliferation while the OB-MS presented higher alkaline phosphatase (ALP) activity, extracellular matrix mineralization and gene expression of runt-related transcription factor 2, Alp, bone sialoprotein and osteocalcin revealing their high osteogenic potential. µCT analysis indicated that there was higher amount of bone formation in defects injected with both OB-NC and OB-MS compared to the control. Moreover, the bone tissue formed by both cells displayed the same histological characteristics. CONCLUSIONS Despite the distinct in vitro osteogenic potential, OB-NC and OB-MS induced similar bone repair in a rat calvarial defect model. Thus, osteoblasts, irrespective of their in vitro osteogenic potential linked to embryonic origins, seem to be suitable for cell-based therapies aiming to repair bone defects.
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Affiliation(s)
- Alann Thaffarell Portilho Souza
- Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Av do Café s/n, Ribeirão Preto, SP, 14040-904, Brazil
| | - Helena Bacha Lopes
- Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Av do Café s/n, Ribeirão Preto, SP, 14040-904, Brazil
| | - Gileade Pereira Freitas
- Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Av do Café s/n, Ribeirão Preto, SP, 14040-904, Brazil
| | - Emanuela Prado Ferraz
- Department of Maxillofacial Surgery, Prosthesis and Traumatology, School of Dentistry, University of São Paulo, São Paulo, SP, Brazil
| | - Fabiola Singaretti Oliveira
- Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Av do Café s/n, Ribeirão Preto, SP, 14040-904, Brazil
| | - Adriana Luisa Gonçalves Almeida
- Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Av do Café s/n, Ribeirão Preto, SP, 14040-904, Brazil
| | - Denise Weffort
- Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Av do Café s/n, Ribeirão Preto, SP, 14040-904, Brazil
| | - Marcio Mateus Beloti
- Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Av do Café s/n, Ribeirão Preto, SP, 14040-904, Brazil
| | - Adalberto Luiz Rosa
- Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, Av do Café s/n, Ribeirão Preto, SP, 14040-904, Brazil.
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11
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Zhan Q, Tian Y, Han L, Wang K, Wang J, Xue C. The opposite effects of Antarctic krill oil and arachidonic acid-rich oil on bone resorption in ovariectomized mice. Food Funct 2020; 11:7048-7060. [DOI: 10.1039/d0fo00884b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The opposite effects and mechanism of AKO and AAO in the regulation of bone resorption in postmenopausal osteoporosis were systematically investigated to support the recommendations on fatty acid types in dietary oils for people with osteoporosis.
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Affiliation(s)
- Qiping Zhan
- College of Food Science and Engineering
- Ocean University of China
- Qingdao 266003
- China
- College of Food Science and Engineering
| | - Yingying Tian
- College of Food Science and Engineering
- Ocean University of China
- Qingdao 266003
- China
- Marine Biomedical Research Institute of Qingdao
| | - Lihua Han
- College of Food Science and Engineering
- Ocean University of China
- Qingdao 266003
- China
| | - Kai Wang
- College of Food Science and Engineering
- Ocean University of China
- Qingdao 266003
- China
| | - Jingfeng Wang
- College of Food Science and Engineering
- Ocean University of China
- Qingdao 266003
- China
| | - Changhu Xue
- College of Food Science and Engineering
- Ocean University of China
- Qingdao 266003
- China
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Henze K, Herten M, Haversath M, Busch A, Brandau S, Hackel A, Flohé SB, Jäger M. Surgical vacuum filter-derived stromal cells are superior in proliferation to human bone marrow aspirate. Stem Cell Res Ther 2019; 10:338. [PMID: 31753037 PMCID: PMC6868799 DOI: 10.1186/s13287-019-1461-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 10/16/2019] [Accepted: 10/18/2019] [Indexed: 01/11/2023] Open
Abstract
Background During joint replacement, surgical vacuum suction guarantees a sufficient overview on the situs. We assume high concentrations of mesenchymal stromal cells (MSCs) on surgical vacuum filters. We compared the in vitro proliferative and differentiation potency of cells from the following: (i) bone marrow (BM), (ii) cancellous bone (CB), (iii) vacuum filter (VF), and (iv) cell saver filtrate reservoir (SF) in 32 patients undergoing elective total hip replacement. Methods Mononuclear cells (MNC) were isolated, and cell proliferation and colony-forming units (CFU) were measured. Adherent cells were characterized by flow cytometry for MSC surface markers. Cells were incubated with osteogenic, adipogenic, and chondrogenic stimuli. Cells were cytochemically stained and osteoblastic expression (RUNX-2, ALP, and BMP-2) investigated via qPCR. Results Dependent on the source, initial MNC amount as well as CFU number was significantly different whereas generation time did not vary significantly. CFU numbers from VF were superior to those from SR, BM, and CB. The resulting amount of MSC from the respective source was highest in the vacuum filter followed by reservoir, aspirate, and cancellous bone. Cells from all groups could be differentiated into the three mesenchymal lines demonstrating their stemness nature. However, gene expression of osteoblastic markers did not differ significantly between the groups. Conclusion We conclude that surgical vacuum filters are able to concentrate tissue with relevant amounts of MSCs. A new potent source of autologous regeneration material with clinical significance is identified. Further clinical studies have to elucidate the regenerative potential of this material in an autologous setting.
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Affiliation(s)
- Katharina Henze
- Department of Orthopaedics and Trauma Surgery, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany
| | - Monika Herten
- Department of Orthopaedics and Trauma Surgery, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany
| | - Marcel Haversath
- Department of Orthopaedics and Trauma Surgery, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany
| | - André Busch
- Department of Orthopaedics and Trauma Surgery, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany
| | - Sven Brandau
- Department of Otorhinolaryngology, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany
| | - Alexander Hackel
- Department of Otorhinolaryngology, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany
| | - Stefanie B Flohé
- Department of Orthopaedics and Trauma Surgery, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany
| | - Marcus Jäger
- Department of Orthopaedics and Trauma Surgery, University Hospital Essen, University of Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany. .,Department of Orthopaedics, Trauma and Reconstructive Surgery, University of Duisburg Essen & St. Marien Hospital Mülheim an der Ruhr / Contilia, Kaiserstrasse 50, 45468, Mülheim/Ruhr, Germany.
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Redox Control of IL-6-Mediated Dental Pulp Stem-Cell Differentiation on Alginate/Hydroxyapatite Biocomposites for Bone Ingrowth. NANOMATERIALS 2019; 9:nano9121656. [PMID: 31766398 PMCID: PMC6955885 DOI: 10.3390/nano9121656] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/13/2019] [Accepted: 11/19/2019] [Indexed: 12/12/2022]
Abstract
Composites and porous scaffolds produced with biodegradable natural polymers are very promising constructs which show high biocompatibility and suitable mechanical properties, with the possibility to be functionalized with growth factors involved in bone formation. For this purpose, alginate/hydroxyapatite (Alg/HAp) composite scaffolds using a novel production design were successfully developed and tested for their biocompatibility and osteoconductive properties in vitro. Redox homeostasis is crucial for dental pulp stem cell (DPSC) differentiation and mineralized matrix deposition, and interleukin-6 (IL-6) was found to be involved not only in immunomodulation but also in cell proliferation and differentiation. In the present study, we evaluated molecular pathways underlying the intracellular balance between redox homeostasis and extracellular matrix mineralization of DPSCs in the presence of composite scaffolds made of alginate and nano-hydroxyapatite (Alg/HAp). Prostaglandin-2 (PGE2) and IL-6 secretion was monitored by ELISA assays, and protein expression levels were quantified by Western blotting. This work aims to demonstrate a relationship between DPSC capacity to secrete a mineralized matrix in the presence of Alg/HAp scaffolds and their immunomodulatory properties. The variation of the molecular axis Nrf2 (nuclear factor erythroid 2-related factor 2)/PGE2/IL-6 suggests a tight intracellular balance between oxidative stress responses and DPSC differentiation in the presence of Alg/HAp scaffolds.
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Osteocytes respond to particles of clinically-relevant conventional and cross-linked polyethylene and metal alloys by up-regulation of resorptive and inflammatory pathways. Acta Biomater 2019; 87:296-306. [PMID: 30690207 DOI: 10.1016/j.actbio.2019.01.047] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Revised: 01/18/2019] [Accepted: 01/24/2019] [Indexed: 02/06/2023]
Abstract
Periprosthetic osteolysis is a major cause of implant failure in total hip replacements. Aseptic loosening caused by osteolytic lesions is associated with the production of bioactive wear particles from the articulations of implants. Wear particles infiltrate the surrounding tissue of implants, promoting inflammation as well as bone resorption. Osteocytes have been shown to both regulate physiological osteoclastogenesis and directly remodel their perilacunar bone matrix by the process of osteocytic osteolysis. We hypothesise that osteocytes respond to wear debris of orthopaedic implant materials by adopting a pro-catabolic phenotype and thus contribute to periprosthetic osteolysis through the known pathways of bone loss. Osteocyte responses to particles derived from clinically relevant materials, ultra-high molecular weight polyethylene (UHMWPE), highly cross-linked polyethylene (XLPE) and metal alloys, Ti6Al4V and CoCrMo, were examined in vitro in human primary osteocyte-like cultures. Osteocyte-like cells exposed to both polyethylene and metal wear particle types showed upregulated expression of catabolic markers associated with osteocytic osteolysis, MMP13, carbonic anhydrase 2 (CA2) and cathepsin K (CTSK). In addition, pro-osteoclastogenesis markers RANKL and M-CSF were induced, as well as the expression of pro-inflammatory cytokines, IL-6 and TNFα, albeit with different kinetics. These findings suggest a previously unrecognised action of wear particles of multiple orthopaedic materials on osteocytes, and suggest a multifaceted role for osteocytes in periprosthetic osteolysis. STATEMENT OF SIGNIFICANCE: This study addresses periprosthetic osteolysis, a major clinical problem leading to aseptic loosening of orthopaedic implants. It is well accepted that wear particles of polyethylene and of other implant materials stimulate the activity of bone resorbing osteoclasts. Our recent work provided evidence that commercial particles of ultra-high molecular weight polyethylene (UHMWPE) stimulated osteocytes to adopt a bone catabolic state. In this study we demonstrate for the first time that particles derived from materials in clinical use, conventional UHMWPE, highly cross-linked polyethylene (XLPE), and Ti6Al4V and CoCrMo metal alloys, all stimulate human osteocyte activities of osteocyte-regulated osteoclastogenesis, osteocytic osteolysis, proinflammatory responses, osteocyte apoptosis, albeit to varying extents. This study provides further mechanistic insight into orthopaedic wear particle mediated bone disease in terms of the osteocyte, the most abundant and key controlling cell type in bone.
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Xu CP, Sun HT, Yang YJ, Cui Z, Wang J, Yu B, Wang FZ, Yang QP, Qi Y. ELP2 negatively regulates osteoblastic differentiation impaired by tumor necrosis factor α in MC3T3-E1 cells through STAT3 activation. J Cell Physiol 2019; 234:18075-18085. [PMID: 30847950 PMCID: PMC6618314 DOI: 10.1002/jcp.28440] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 02/09/2019] [Accepted: 02/14/2019] [Indexed: 02/06/2023]
Abstract
Tumor necrosis factor‐α (TNF‐α) is a pluripotent signaling molecule. The biological effect of TNF‐α includes slowing down osteogenic differentiation, which can lead to bone dysplasia in long‐term inflammatory microenvironments. Signal transducer and activator of transcription 3 (STAT3)‐interacting protein 1 (StIP1, also known as elongator complex protein 2, ELP2) play a role in inhibiting TNF‐α‐induced osteoblast differentiation. In the present study, we investigated whether and how ELP2 activation mediates the effects of TNF‐α on osteoblastic differentiation. Using in vitro cell cultures of preosteoblastic MC3T3‐E1 cells, we found that TNF‐α inhibited osteoblastic differentiation accompanied by an increase in ELP2 expression and STAT3 activation. Forced ELP2 expression inhibited osteogenic differentiation of MC3T3‐E1 cells, with a decrease in the expression of osteoblast marker genes, alkaline phosphatase activity, and matrix mineralization capacity. In contrast, ELP2 silencing ameliorated osteogenic differentiation in MC3T3‐E1 cells, even after TNF‐α stimulation. The TNF‐α‐induced inhibitory effect on osteoblastic differentiation was therefore mediated by ELP2, which was associated with Janus kinase 2 (JAK2)/STAT3 activation. These results suggest that ELP2 is upregulated at the differentiation of MC3T3‐E1 cells into osteoblasts and inhibits osteogenic differentiation in response to TNF‐α through STAT3 activation.
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Affiliation(s)
- Chang-Peng Xu
- Department of Orthopaedics, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, People's Republic of China
| | - Hong-Tao Sun
- Department of Orthopaedics, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, People's Republic of China
| | - Ya-Jun Yang
- Department of Pharmacology, Guangdong Medical University, Zhanjiang, Guangdong, People's Republic of China
| | - Zhuang Cui
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Jian Wang
- Department of Orthopaedics, The Inner Mongolia People's Hospital, Hohhot, Inner Mongolia, People's Republic of China
| | - Bin Yu
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Fa-Zheng Wang
- Department of Orthopaedics, The First People's Hospital of Kashgar Prefecture, Kashgar, Xinjiang, People's Republic of China
| | - Qing-Po Yang
- Department of Orthopaedics, The First People's Hospital of Kashgar Prefecture, Kashgar, Xinjiang, People's Republic of China
| | - Yong Qi
- Department of Orthopaedics, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, People's Republic of China
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Abstract
Bone and marrow are the two facets of the same organ, in which bone and hematopoietic cells coexist and interact. Marrow and skeletal tissue influence each-other and a variety of genetic disorders directly targets both of them, which may result in combined hematopoietic failure and skeletal malformations. Other conditions primarily affect one organ with secondary influences on the other. For instance, various forms of congenital anemias reduce bone mass and induce osteoporosis, while osteoclast failure in osteopetrosis prevents marrow development reducing medullary cavities and causing anemia and pancytopenia. Understanding the pathophysiology of these conditions may facilitate diagnosis and management, although many disorders are presently incurable. This article describes several congenital bone diseases and their relationship to hematopoietic tissue.
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Affiliation(s)
- Anna Teti
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy.
| | - Steven L Teitelbaum
- Department of Medicine, Division of Bone and Mineral Diseases, Washington University School of Medicine, St. Louis, MO, USA; Department of Pathology and Immunology, Division of Anatomic and Molecular Pathology, Washington University School of Medicine, St. Louis, MO, USA
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Ramirez‐Garcia‐Luna JL, Wong TH, Chan D, Al‐Saran Y, Awlia A, Abou‐Rjeili M, Ouellet S, Akoury E, Lemarié CA, Henderson JE, Martineau PA. Defective bone repair in diclofenac treated C57Bl6 mice with and without lipopolysaccharide induced systemic inflammation. J Cell Physiol 2018; 234:3078-3087. [DOI: 10.1002/jcp.27128] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 07/09/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Jose L. Ramirez‐Garcia‐Luna
- Bone Engineering LabsInjury, Repair & Recovery Program, Research Institute‐McGill University Health CentreMontreal Québec Canada
- Experimental SurgeryFaculty of Medicine, McGill UniversityMontreal Québec Canada
| | - Timothy H. Wong
- Bone Engineering LabsInjury, Repair & Recovery Program, Research Institute‐McGill University Health CentreMontreal Québec Canada
- Biotechnology Program, University of British ColumbiaVancouver British Columbia Canada
| | - Daniel Chan
- Bone Engineering LabsInjury, Repair & Recovery Program, Research Institute‐McGill University Health CentreMontreal Québec Canada
- Biotechnology Program, University of British ColumbiaVancouver British Columbia Canada
| | - Yazeed Al‐Saran
- Bone Engineering LabsInjury, Repair & Recovery Program, Research Institute‐McGill University Health CentreMontreal Québec Canada
- Experimental SurgeryFaculty of Medicine, McGill UniversityMontreal Québec Canada
| | - Ayman Awlia
- Bone Engineering LabsInjury, Repair & Recovery Program, Research Institute‐McGill University Health CentreMontreal Québec Canada
- Experimental SurgeryFaculty of Medicine, McGill UniversityMontreal Québec Canada
| | - Mira Abou‐Rjeili
- Bone Engineering LabsInjury, Repair & Recovery Program, Research Institute‐McGill University Health CentreMontreal Québec Canada
- Experimental MedicineFaculty of MedicineMcGill UniversityMontreal Québec Canada
| | - Suzie Ouellet
- Bone Engineering LabsInjury, Repair & Recovery Program, Research Institute‐McGill University Health CentreMontreal Québec Canada
| | - Elie Akoury
- Experimental SurgeryFaculty of Medicine, McGill UniversityMontreal Québec Canada
| | - Catherine A. Lemarié
- Experimental MedicineFaculty of MedicineMcGill UniversityMontreal Québec Canada
- The Lady Davis Institute for Medical Research, McGill UniversityMontreal Québec Canada
| | - Janet E. Henderson
- Bone Engineering LabsInjury, Repair & Recovery Program, Research Institute‐McGill University Health CentreMontreal Québec Canada
- Experimental SurgeryFaculty of Medicine, McGill UniversityMontreal Québec Canada
| | - Paul A. Martineau
- Bone Engineering LabsInjury, Repair & Recovery Program, Research Institute‐McGill University Health CentreMontreal Québec Canada
- Experimental SurgeryFaculty of Medicine, McGill UniversityMontreal Québec Canada
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Frondoza CG, Fortuno LV, Grzanna MW, Ownby SL, Au AY, Rashmir-Raven AM. α-Lipoic Acid Potentiates the Anti-Inflammatory Activity of Avocado/Soybean Unsaponifiables in Chondrocyte Cultures. Cartilage 2018; 9:304-312. [PMID: 29156944 PMCID: PMC6042030 DOI: 10.1177/1947603516686146] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Objective Pro-inflammatory mediators such as prostaglandin E-2 (PGE2) play major roles in the pathogenesis of osteoarthritis (OA). Although current pharmacologic treatments reduce inflammation, their prolonged use is associated with deleterious side effects prompting the search for safer and effective alternative strategies. The present study evaluated whether chondrocyte production of PGE2 can be suppressed by the combination of avocado/soybean unsaponifiables (ASU) and α-lipoic acid (LA). Design Chondrocytes from articular cartilage of equine joints were incubated for 24 hours with: (1) control media, (2) ASU, (3) LA, or (4) ASU + LA combination. Cells were activated with lipopolysaccharide (LPS), interleukin 1β (IL-1β) or hydrogen peroxide (H2O2) for 24 hours and supernatants were immunoassayed for PGE2. Nuclear factor-kappa B (NF-κB) analyses were performed by immunocytochemistry and Western blot following 1 hour of activation with IL-1β. Results LPS, IL-1β, or H2O2 significantly increased PGE2 production. ASU or LA alone suppressed PGE2 production in LPS and IL-1β activated cells. Only LA alone at 2.5 µg/mL was inhibitory in H2O2-activated chondrocytes. ASU + LA inhibited more than either agent alone in all activated cells. ASU + LA also inhibited the IL-1β induced nuclear translocation of NF-κB. Conclusions The present study provides evidence that chondrocyte PGE2 production can be inhibited by the combination of ASU + LA more effectively than either ASU or LA alone. Inhibition of PGE2 production is associated with the suppression of NF-κB translocation. The potent inhibitory effect of ASU + LA on PGE2 production could offer a potential advantage for a combination anti-inflammatory/antioxidant approach in the management of OA.
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Affiliation(s)
- Carmelita G. Frondoza
- Nutramax Laboratories, Inc., Edgewood, MD, USA,Department of Orthopaedic Surgery, Johns Hopkins University, Baltimore, MD, USA,College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, USA,Carmelita G. Frondoza, Department of Orthopaedic Surgery, Johns Hopkins University, 601 Caroline Street, Baltimore, MD 21287, USA.
| | | | | | | | | | - Ann M. Rashmir-Raven
- College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
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Cai J, Wang J, Ye K, Li D, Ai C, Sheng D, Jin W, Liu X, Zhi Y, Jiang J, Chen J, Mo X, Chen S. Dual-layer aligned-random nanofibrous scaffolds for improving gradient microstructure of tendon-to-bone healing in a rabbit extra-articular model. Int J Nanomedicine 2018; 13:3481-3492. [PMID: 29950830 PMCID: PMC6014388 DOI: 10.2147/ijn.s165633] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Tendon/ligament injuries are common sports injuries. Clinically, the repair of a ruptured tendon or ligament to its bony insertion is needed, but the enthesis structure is not well reestablished following surgical repair. Herein, we fabricated dual-layer aligned-random scaffold (ARS) by electrospinning and aimed to investigate the effect of the scaffold on tendon-to-bone healing in vivo. MATERIALS AND METHODS The random and dual-layer aligned-random silk fbroin poly(L-lactic acid-co-e-caprolactone) (P(LLA-CL)) nanofibrous scaffolds were successfully fabricated by electrospinning methods. Ninety New Zealand white rabbits were randomly divided into three groups (random scaffold [RS], ARS, and control groups), and they were subjected to surgery to establish an extra-articular tendon-to-bone healing model with autologous Achilles tendon. RESULTS Histological assessment showed that the ARS significantly increased the area of metachromasia, decreased the interface width, and improved collagen maturation and organization at the tendon-bone interface compared with the RS and control groups. Microcomputed tomography analysis showed that the bone tunnel area of RS and ARS groups was significantly smaller than those of the control group. Real-time polymerase chain reaction showed that BMP-2 and osteopontin expression levels of the tissue at the interface between the bone and graft in the RS and ARS groups were higher than those of the control group at 6 weeks. Collagen I expression level of the ARS group was significantly higher than those of the RS and control groups at 6 and 12 weeks. Moreover, the ARS groups had a better ultimate load-to-failure and stiffness than the RS and control groups. CONCLUSION ARS could effectively augment the tendon-to-bone integration and improve gradient microstructure in a rabbit extra-articular model by inducing the new bone formation, increasing the area of fibrocartilage, and improving collagen organization and maturation. The dual-layer aligned-random silk fibroin/P(LLA-CL) nanofibrous scaffold is proved to be a promising biomaterial for tendon-to-bone healing.
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Affiliation(s)
- Jiangyu Cai
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Juan Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Kaiqiang Ye
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Dandan Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Chengchong Ai
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Dandan Sheng
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Wenhe Jin
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Xingwang Liu
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Yunlong Zhi
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Jia Jiang
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Jun Chen
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
- Shanghai BJ-KMC Medical Technology Co., Ltd, Shanghai 201707, China
- State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Xiumei Mo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Shiyi Chen
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China
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20
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ONO-1301 Enhances in vitro Osteoblast Differentiation and in vivo Bone Formation Induced by Bone Morphogenetic Protein. Spine (Phila Pa 1976) 2018; 43:E616-E624. [PMID: 29016438 DOI: 10.1097/brs.0000000000002439] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN In vitro and in vivo assessment of osteogenic effect by prostacyclin agonist (ONO-1301). OBJECTIVE The aim of this study was to investigate the effects of ONO-1301 on in vitro osteoblastic differentiation and in vivo bone formation induced by bone morphogenetic protein (BMP). SUMMARY OF BACKGROUND DATA Among prostaglandins (PGs), PGE2 is the most abundant in bone tissue and its effects on bone formation have been well studied. PGI2 (prostacyclin) is the second most abundant PG in bone tissue and plays important roles in hemodynamics. However, the effects of PGI2 on osteoblast differentiation and bone regeneration have not been elucidated. METHODS The effects of PGI2 agonist (ONO-1301), with and without recombinant human (rh) BMP-2, on osteoblastic differentiation and cell proliferation were investigated in vitro using alkaline phosphatase (ALP) and WST-1 assays. Murine primary osteoblasts and cell lines (ST2, MC3T3-E1, C2C12, and CH310T1/2) were used for the study. The effects of ONO-1301 on rhBMP-2 induced bone formation were investigated in a mouse model of muscle pouch transplantation (ectopic model) and in a rat model of spinal fusion (orthotopic model). RESULTS ONO-1301 significantly increased ALP activity in the primary osteoblasts and ST2 cells. In addition, cotreatment with ONO-1301 and rhBMP-2 significantly increased ALP activity in the primary osteoblasts, as well as in ST2 and MC3T3-E1 cells. Cell proliferation was not affected by both ONO-1301 and ONO-1301 as well as rhBMP-2. In the ectopic model, ONO-1301 significantly increased the volume of ectopic bone whose formation was induced by BMP. In addition, in the orthotopic model, ONO-1301 significantly increased bone volume and fusion rate. CONCLUSION This study has demonstrated that the PG IP agonist ONO-1301 improves in vitro BMP-2 induced osteoblast differentiation and in vivo ectopic and orthotopic bone formation. The results suggest that ONO-1301 has a potential clinical application as an enhancer of BMP-induced bone formation. LEVEL OF EVIDENCE N/A.
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A review of the cellular and molecular effects of extracorporeal shockwave therapy. Vet Comp Orthop Traumatol 2017; 29:99-107. [DOI: 10.3415/vcot-15-04-0057] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 11/15/2015] [Indexed: 12/31/2022]
Abstract
SummaryExtracorporeal shockwave therapy (ESWT) is a novel therapeutic modality and its use in promoting connective tissue repair and analgesic effect has been advocated in the literature. It is convenient, cost-effective, and has negligible complications; it therefore bypasses many of the problems associated with surgical interventions. This paper reviews the proposed mechanisms of action in promoting tissue repair and regeneration as well as analysing its efficacy providing an analgesic effect in clinical applications. Further research will be required to not only identify the underlying mechanisms more precisely, but will also be critical for ensuring consistency across the literature so that the most beneficial treatment protocol can be developed. Extracorporeal shockwave therapy stands as a promising alternative modality in promoting tissue repair.
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Wu Y, Sun H, Yang B, Liu X, Wang J. 5-Lipoxygenase Knockout Aggravated Apical Periodontitis in a Murine Model. J Dent Res 2017; 97:442-450. [PMID: 29125911 DOI: 10.1177/0022034517741261] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
5-Lipoxygenase (5-LO) plays a vital role in the host innate immune response, including bacteria-induced inflammation. Apical periodontitis (AP) is due to immune disorders caused by imbalances between bacterial invasion and subsequent host defense response. In this work, we investigated the role of 5-lipoxygenase in AP by using 5- lo knockout mice (5- lo-/- mice). Results showed that 5- lo-/- mice had greater periapical bone loss and more osteoclasts positive for tartrate-resistant acid phosphatase staining than did wild-type mice, as determined by micro-computed tomography and histologic staining. The inflammation- and osteoclastogenesis-related factors IL-1β, TNF-α, RANK, and RANKL were also significantly elevated in 5- lo-/- mice, whereas osteoprotegerin was reduced. Furthermore, peritoneal macrophages from 5- lo-/- mice revealed an obviously impaired ability to phagocytose the AP pathogenic bacteria Fusobacterium nucleatum. In vivo experiments confirmed that 5- lo knockout led to decreased macrophage recruitment and increased F. nucleatum infection around the periapical area due to decreased leukotriene B4 and LXA4 production. All these results showed that 5- lo knockout impaired the host innate immune system to promote the release of bone resorption-related factors. Therefore, 5- lo deficiency aggravated AP in an experimental murine AP model.
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Affiliation(s)
- Y Wu
- 1 The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, People's Republic of China
| | - H Sun
- 1 The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, People's Republic of China
| | - B Yang
- 1 The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, People's Republic of China
| | - X Liu
- 1 The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, People's Republic of China
| | - J Wang
- 1 The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, People's Republic of China
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Abstract
The contribution of inflammation to bone loss is well documented in arthritis and other diseases with an emphasis on how inflammatory cytokines promote osteoclastogenesis. Macrophages are the major producers of cytokines in inflammation, and the factors they produce depend upon their activation state or polarization. In recent years, it has become apparent that macrophages are also capable of interacting with osteoblasts and their mesenchymal precursors. This interaction provides growth and differentiation factors from one cell that act on the other and visa versa-a concept akin to the requirement for a feeder layer to grow hemopoietic cells or the coupling that occurs between osteoblasts and osteoclasts to maintain bone homeostasis. Alternatively, activated macrophages are the most likely candidates to promote bone formation and have also been implicated in the tissue repair process in other tissues. In bone, a number of factors, including oncostatin M, have been shown to promote osteoblast formation both in vitro and in vivo. This review discusses the different cell types involved, cellular mediators, and how this can be used to direct new bone anabolic approaches.
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Abstract
Objective: To review the recent developments in the mechanisms of epithelium sodium channels (ENaCs) induced bone formation and regulation. Data Sources: Studies written in English or Chinese were searched using Medline, PubMed and the index of Chinese-language literature with time restriction from 2005 to 2014. Keywords included ENaC, bone, bone formation, osteonecrosis, estrogen, and osteoporosis. Data from published articles about the structure of ENaC, mechanism of ENaC in bone formation in recent domestic and foreign literature were selected. Study Selection: Abstract and full text of all studies were required to obtain. Studies those were not accessible and those did not focus on the keywords were excluded. Results: ENaCs are tripolymer ion channels which are assembled from homologous α, β, and γ subunits. Crystal structure of ENaCs suggests that ENaC has a central ion-channel located in the central symmetry axis of the three subunits. ENaCs are protease sensitive channels whose iron-channel activity is regulated by the proteolytic reaction. Channel opening probability of ENaCs is regulated by proteinases, mechanical force, and shear stress. Several molecules are involved in regulation of ENaCs in bone formation, including nitride oxide synthases, voltage-sensitive calcium channels, and cyclooxygenase-2. Conclusion: The pathway of ENaC involved in shear stress has an effect on stimulating osteoblasts even bone formation by estrogen interference.
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Affiliation(s)
| | | | - Wei-Hua Xu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
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Barker AL, McNeil JJ, Seeman E, Ward SA, Sanders KM, Khosla S, Cumming RG, Pasco JA, Bohensky MA, Ebeling PR, Woods RL, Lockery JE, Wolfe R, Talevski J. A randomised controlled trial of low-dose aspirin for the prevention of fractures in healthy older people: protocol for the ASPREE-Fracture substudy. Inj Prev 2016; 22:297-301. [PMID: 26002770 PMCID: PMC4879092 DOI: 10.1136/injuryprev-2015-041655] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 04/21/2015] [Indexed: 01/03/2023]
Abstract
BACKGROUND Disability, mortality and healthcare burden from fractures in older people is a growing problem worldwide. Observational studies suggest that aspirin may reduce fracture risk. While these studies provide room for optimism, randomised controlled trials are needed. This paper describes the rationale and design of the ASPirin in Reducing Events in the Elderly (ASPREE)-Fracture substudy, which aims to determine whether daily low-dose aspirin decreases fracture risk in healthy older people. METHODS ASPREE is a double-blind, randomised, placebo-controlled primary prevention trial designed to assess whether daily active treatment using low-dose aspirin extends the duration of disability-free and dementia-free life in 19 000 healthy older people recruited from Australian and US community settings. This substudy extends the ASPREE trial data collection to determine the effect of daily low-dose aspirin on fracture and fall-related hospital presentation risk in the 16 500 ASPREE participants aged ≥70 years recruited in Australia. The intervention is a once daily dose of enteric-coated aspirin (100 mg) versus a matching placebo, randomised on a 1:1 basis. The primary outcome for this substudy is the occurrence of any fracture-vertebral, hip and non-vert-non-hip-occurring post randomisation. Fall-related hospital presentations are a secondary outcome. DISCUSSION This substudy will determine whether a widely available, simple and inexpensive health intervention-aspirin-reduces the risk of fractures in older Australians. If it is demonstrated to safely reduce the risk of fractures and serious falls, it is possible that aspirin might provide a means of fracture prevention. TRIAL REGISTRATION NUMBER The protocol for this substudy is registered with the Australian New Zealand Clinical Trials Registry (ACTRN12615000347561).
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Affiliation(s)
- Anna L Barker
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - John J McNeil
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Ego Seeman
- Department of Endocrinology and Medicine, Austin Health, University of Melbourne, Melbourne, Australia
| | - Stephanie A Ward
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia Monash Ageing Research Centre (MONARC), School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Kerrie M Sanders
- Department of Medicine, NorthWest Academic Centre, University of Melbourne, Melbourne, Australia Institute for Health and Ageing, Australian Catholic University, Melbourne, Australia
| | - Sundeep Khosla
- Endocrine Research Unit, College of Medicine, Mayo Clinic, Rochester, USA
| | - Robert G Cumming
- School of Public Health, University of Sydney, Sydney, Australia
| | - Julie A Pasco
- Department of Medicine, NorthWest Academic Centre, University of Melbourne, Melbourne, Australia Epi-Centre for Healthy Ageing, School of Medicine, Deakin University, Geelong, Australia
| | - Megan A Bohensky
- Department of Medicine, Melbourne EpiCentre, University of Melbourne, Melbourne, Australia
| | - Peter R Ebeling
- Department of Medicine, School of Clinical Sciences, Monash University, Clayton, Australia
| | - Robyn L Woods
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Jessica E Lockery
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Rory Wolfe
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Jason Talevski
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
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Misawa MYO, Huynh‐Ba G, Villar GM, Villar CC. Efficacy of stem cells on the healing of peri-implant defects: systematic review of preclinical studies. Clin Exp Dent Res 2016; 2:18-34. [PMID: 29744146 PMCID: PMC5839227 DOI: 10.1002/cre2.16] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Revised: 11/23/2015] [Accepted: 11/30/2015] [Indexed: 12/21/2022] Open
Abstract
This systematic review considers the evidence from animal studies evaluating the effectiveness of mesenchymal stem cells (MSC) in the treatment of intraoral peri-implant defects. MEDLINE, EMBASE, and LILACS databases were searched for quantitative preclinical controlled animal model studies that evaluated the effect of MSC on bone healing at intraoral peri-implant bone defects. The primary outcome was the amount of (re-)osseointegration reported as bone-to-implant contact in the defect area. The systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement guidelines. Ten studies met the inclusion criteria. Only one study induced peri-implant inflammation to produce peri-implant bone defects. In all others, defects were surgically created at implant installation. Differences in defect morphology were identified among the studies. Both xenogenous and autogenous MSC were used to treat peri-implant defects. These included bone marrow-derived MSC, periodontal ligament-derived MSC, umbilical cord MSC, bone marrow-derived mononuclear cells, and peripheral blood mononuclear cells. Meta-analysis was not possible because of heterogeneities in study designs. Nonetheless, in most studies, local MSC implantation was not associated with adverse effects and had a positive effect on bone healing around peri-implant defects. Combination of MSC with membranes and bioactive factors appears to provide improved treatment outcomes. In large animal models, intraoral use of MSC may provide beneficial effects on bone healing within peri-implant defects. The various degrees of success of MSC in peri-implant bone healing are likely to be related to the use of cells from various populations, tissues, and donor species. However, human safety and efficacy must be demonstrated before its clinical use can be considered.
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Affiliation(s)
- Mônica Yuri Orita Misawa
- Division of Periodontics, Department of Stomatology, School of DentistryUniversity of São PauloSão PauloSão PauloBrazil
| | - Guy Huynh‐Ba
- Department of PeriodonticsUniversity of Texas Health Science Center at San Antonio Dental SchoolSan AntonioTexasUSA
| | - Gustavo Machado Villar
- Division of Periodontics, Department of Stomatology, School of DentistryUniversity of São PauloSão PauloSão PauloBrazil
| | - Cristina Cunha Villar
- Division of Periodontics, Department of Stomatology, School of DentistryUniversity of São PauloSão PauloSão PauloBrazil
- Department of PeriodonticsUniversity of Texas Health Science Center at San Antonio Dental SchoolSan AntonioTexasUSA
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Shrivats AR, Hsu E, Averick S, Klimak M, Watt ACS, DeMaio M, Matyjaszewski K, Hollinger JO. Cationic Nanogel-mediated Runx2 and Osterix siRNA Delivery Decreases Mineralization in MC3T3 Cells. Clin Orthop Relat Res 2015; 473:2139-49. [PMID: 25448327 PMCID: PMC4418993 DOI: 10.1007/s11999-014-4073-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Accepted: 11/17/2014] [Indexed: 01/31/2023]
Abstract
BACKGROUND Heterotopic ossification (HO) may occur after musculoskeletal trauma, traumatic brain injury, and total joint arthroplasty. As such, HO is a compelling clinical concern in both military and civilian medicine. A possible etiology of HO involves dysregulated signals in the bone morphogenetic protein osteogenic cascade. Contemporary treatment options for HO (ie, nonsteroidal antiinflammatory drugs and radiation therapy) have adverse effects associated with their use and are not biologically engineered to abrogate the molecular mechanisms that govern osteogenic differentiation. QUESTIONS/PURPOSES We hypothesized that (1) nanogel-mediated short interfering RNA (siRNA) delivery against Runt-related transcription factor 2 (Runx2) and osterix (Osx) genes will decrease messenger RNA expression; (2) inhibit activity of the osteogenic marker alkaline phosphatase (ALP); and (3) inhibit hydroxyapatite (HA) deposition in osteoblast cell cultures. METHODS Nanogel nanostructured polymers delivered siRNA in 48-hour treatment cycles against master osteogenic regulators, Runx2 and Osx, in murine calvarial preosteoblasts (MC3T3-E1.4) stimulated for osteogenic differentiation by recombinant human bone morphogenetic protein (rhBMP-2). The efficacy of RNA interference (RNAi) therapeutics was determined by quantitation of messenger RNA knockdown (by quantitative reverse transcription-polymerase chain reaction), downstream protein knockdown (determined ALP enzymatic activity assay), and HA deposition (determined by OsteoImage™ assay). RESULTS Gene expression assays demonstrated that nanogel-based RNAi treatments at 1:1 and 5:1 nanogel:short interfering RNA weight ratios reduced Runx2 expression by 48.59% ± 19.53% (p < 0.001) and 43.22% ± 18.01% (both p < 0.001). The same 1:1 and 5:1 treatments against both Runx2 and Osx reduced expression of Osx by 51.65% ± 10.85% and 47.65% ± 9.80% (both p < 0.001). Moreover, repeated 48-hour RNAi treatment cycles against Runx2 and Osx rhBMP-2 administration reduced ALP activity after 4 and 7 days. ALP reductions after 4 days in culture by nanogel 5:1 and 10:1 RNAi treatments were 32.4% ± 12.0% and 33.6% ± 13.8% (both p < 0.001). After 7 days in culture, nanogel 1:1 and 5:1 RNAi treatments produced 35.9% ± 14.0% and 47.7% ± 3.2% reductions in ALP activity. Osteoblast mineralization data after 21 days suggested that nanogel 1:1, 5:1, and 10:1 RNAi treatments decreased mineralization (ie, HA deposition) from cultures treated only with rhBMP-2 (p < 0.001). However, despite RNAi attack on Runx2 and Osx, HA deposition levels remained greater than non-rhBMP-2-treated cell cultures. CONCLUSIONS Although mRNA and protein knockdown were confirmed as a result of RNAi treatments against Runx2 and Osx, complete elimination of mineralization processes was not achieved. RNAi targeting mid- and late-stage osteoblast differentiation markers such as ALP, osteocalcin, osteopontin, and bone sialoprotein) may produce the desired RNAi-nanogel nanostructured polymer HO prophylaxis. CLINICAL RELEVANCE Successful HO prophylaxis should target and silence osteogenic markers critical for heterotopic bone formation processes. The identification of such markers, beyond RUNX2 and OSX, may enhance the effectiveness of RNAi prophylaxes for HO.
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Affiliation(s)
- Arun R. Shrivats
- />Department of Biomedical Engineering, Carnegie Mellon University, 700 Technology Drive, Pittsburgh, PA 15219 USA
| | - Eric Hsu
- />Department of Biomedical Engineering, Carnegie Mellon University, 700 Technology Drive, Pittsburgh, PA 15219 USA
| | - Saadyah Averick
- />Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213 USA
| | - Molly Klimak
- />Department of Biomedical Engineering, Carnegie Mellon University, 700 Technology Drive, Pittsburgh, PA 15219 USA
| | - April C. S. Watt
- />Department of Biomedical Engineering, Carnegie Mellon University, 700 Technology Drive, Pittsburgh, PA 15219 USA
| | - Marlene DeMaio
- />Department of Orthopaedic Surgery, Naval Medical Center Portsmouth, 620 John Paul Jones Cir, Portsmouth, VA 23708 USA
| | - Krzysztof Matyjaszewski
- />Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213 USA
| | - Jeffrey O. Hollinger
- />Department of Biomedical Engineering, Carnegie Mellon University, 700 Technology Drive, Pittsburgh, PA 15219 USA
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Jiang J, Zhao LG, Teng YJ, Chen SL, An LP, Ma JL, Wang J, Xia YY. ERK5 signalling pathway is essential for fluid shear stress-induced COX-2 gene expression in MC3T3-E1 osteoblast. Mol Cell Biochem 2015; 406:237-43. [DOI: 10.1007/s11010-015-2441-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 05/06/2015] [Indexed: 12/20/2022]
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Quantitative proteomics reveals ELP2 as a regulator to the inhibitory effect of TNF-α on osteoblast differentiation. J Proteomics 2015; 114:234-46. [DOI: 10.1016/j.jprot.2014.11.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Revised: 10/11/2014] [Accepted: 11/04/2014] [Indexed: 12/19/2022]
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Kemper O, Herten M, Fischer J, Haversath M, Beck S, Classen T, Warwas S, Tassemeier T, Landgraeber S, Lensing-Höhn S, Krauspe R, Jäger M. Prostacyclin suppresses twist expression in the presence of indomethacin in bone marrow-derived mesenchymal stromal cells. Med Sci Monit 2014; 20:2219-27. [PMID: 25382306 PMCID: PMC4238757 DOI: 10.12659/msm.890953] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Background Iloprost, a stable prostacyclin I2 analogue, seems to have an osteoblast-protective potential, whereas indomethacin suppresses new bone formation. The aim of this study was to investigate human bone marrow stromal cell (BMSC) proliferation and differentiation towards the osteoblastic lineage by administration of indomethacin and/or iloprost. Material/Methods Human bone marrow cells were obtained from 3 different donors (A=26 yrs/m; B=25 yrs/f, C=35 yrs/m) via vacuum aspiration of the iliac crest followed by density gradient centrifugation and flow cytometry with defined antigens (CD105+/73+/45−/14−). The cells were seeded and incubated as follows: without additives (Group 0; donor A/B/C), with 10−7 M iloprost only (Group 0+ilo; A/B), with indomethacin only in concentrations of 10−6 M (Group 1, A), 10−5 M (Group 2, B), 10−4 M (Group 3, A/B), and together with 10−7 M iloprost (Groups 4–6, A/B/C). On Day 10 and 28, UV/Vis spectrometric and immunocytochemical assays (4 samples per group and donor) were performed to investigate cell proliferation (cell count measurement) and differentiation towards the osteoblastic lineage (CD34−, CD45−, CD105+, type 1 collagen (Col1), osteocalcin (OC), alkaline phosphatase (ALP), Runx2, Twist, specific ALP-activity). Results Indomethacin alone suppressed BMSC differentiation towards the osteoblastic lineage by downregulation of Runx2, Col1, and ALP. In combination with indomethacin, iloprost increased cell proliferation and differentiation and it completely suppressed Twist expression at Day 10 and 28. Iloprost alone did not promote cell proliferation, but moderately enhanced Runx2 and Twist expression. However, the proliferative effects and the specific ALP-activity varied donor-dependently. Conclusions Iloprost partially antagonized the suppressing effects of indomethacin on BMSC differentiation towards the osteoblast lineage. It enhanced the expression of Runx2 and, only in the presence of indomethacin, it completely suppressed Twist. Thus, in the treatment of avascular osteonecrosis or painful bone marrow edema, the undesirable effects of indomethacin might be counterbalanced by iloprost.
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Affiliation(s)
- Oliver Kemper
- Department of Orthopedics, Medical Faculty, University of Düsseldorf, Düsseldorf, Germany
| | - Monika Herten
- Department of Orthopedics, Medical Faculty, University of Düsseldorf, Düsseldorf, Germany
| | - Johannes Fischer
- Institute for Transplantation Diagnostics and Cell Therapy, University Düsseldorf, Düsseldorf, Germany
| | - Marcel Haversath
- Department of Orthopaedics, University Duisburg-Essen, Essen, Germany
| | - Sascha Beck
- Department of Orthopedics, University Duisburg-Essen, Essen, Germany
| | - Tim Classen
- Department of Orthopaedics, University Hospital of Duisburg-Essen, Essen, Germany
| | - Sebastian Warwas
- Department of Orthopaedics, University Hospital of Duisburg-Essen, Essen, Germany
| | - Tjark Tassemeier
- Department of Orthopaedics, University Hospital of Duisburg-Essen, Essen, Germany
| | | | - Sabine Lensing-Höhn
- Department of Orthopedics, Medical Faculty, University Düsseldorf, Düsseldorf, Germany
| | - Rüdiger Krauspe
- Department of Orthopedics, Medical Faculty, University of Düsseldorf, Düsseldorf, Germany
| | - Marcus Jäger
- Department of Orthopedics, University Duisburg-Essen, Essen, Germany
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Han L, Yang L, Liu B, Cheng X. Trans-caryophyllene suppresses tumor necrosis factor (TNFα)-induced inflammation in human chondrocytes. Eur Food Res Technol 2014. [DOI: 10.1007/s00217-014-2302-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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