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Kang M, Lee S, Seo JP, Lee EB, Ahn D, Shin J, Paik YK, Jo D. Cell-permeable bone morphogenetic protein 2 facilitates bone regeneration by promoting osteogenesis. Mater Today Bio 2024; 25:100983. [PMID: 38327977 PMCID: PMC10848039 DOI: 10.1016/j.mtbio.2024.100983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/12/2024] [Accepted: 01/25/2024] [Indexed: 02/09/2024] Open
Abstract
The use of the FDA-approved osteoinductive growth factor BMP2 is widespread for bone regeneration. However, its clinical application has been hindered by limitations in cell permeability and a short half-life in circulation. To address this issue, we have developed a modified version of BMP2, referred to as Cell Permeable (CP)-BMP2, which possesses improved cell permeability. CP-BMP2 incorporates an advanced macromolecular transduction domain (aMTD) to facilitate transfer across the plasma membrane, a solubilization domain, and recombinant human BMP2. Compared to traditional rhBMP2, CP-BMP2 exhibits enhanced cell permeability, solubility, and bioavailability, and activates Smad phosphorylation through binding to BMP receptor 2. The effectiveness of CP-BMP2 was evaluated in three animal studies focusing on bone regeneration. In the initial study, mice and rabbits with critical-size calvarial defects received subcutaneous (SC) injections of CP-BMP2 and rhBMP2 (7.5 mg/kg, 3 injections per week for 8 weeks).Following 8 weeks of administration, CP-BMP2 demonstrated a remarkable 65 % increase in bone formation in mice when compared to both the vehicle and rhBMP2. Moreover, rabbits exhibited faster bone formation, characterized by a filling pattern originating from the center. In a subsequent study involving injured horses, hind limb bones treated with CP-BMP2 exhibited an 85 % higher bone regeneration rate, as evidenced by Micro-CT results, in contrast to horses treated with the vehicle or rhBMP2 (administered at 150 μg/defect, subcutaneously, once a week for 8 weeks, without a scaffold). These results underscore the potential of CP-BMP2 to facilitate rapid and effective healing. No noticeable adverse effects, such as ectopic bone formation, were observed in any of the studies. Overall, our findings demonstrate that CP-BMP2 holds therapeutic potential as a novel and effective osteogenic agent.
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Affiliation(s)
- Mingu Kang
- Cellivery R&D Institute, Cellivery Therapeutics, Inc., Seoul, 03929, South Korea
| | - Seokwon Lee
- Cellivery R&D Institute, Cellivery Therapeutics, Inc., Seoul, 03929, South Korea
| | - Jong-pil Seo
- College of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University, Jeju, 63243, South Korea
| | - Eun-bee Lee
- College of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University, Jeju, 63243, South Korea
| | - Daye Ahn
- Cellivery R&D Institute, Cellivery Therapeutics, Inc., Seoul, 03929, South Korea
| | - Jisoo Shin
- Cellivery R&D Institute, Cellivery Therapeutics, Inc., Seoul, 03929, South Korea
| | - Young-Ki Paik
- Cellivery R&D Institute, Cellivery Therapeutics, Inc., Seoul, 03929, South Korea
| | - Daewoong Jo
- Cellivery R&D Institute, Cellivery Therapeutics, Inc., Seoul, 03929, South Korea
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Su H, Liao Y, Yuan X, Huang J, Chen Y, Zhao B. G/ β- TCP composite scaffold material promotes osteogenic differentiation of bone marrow mesenchymal stem cells. J Biomed Mater Res B Appl Biomater 2023; 111:2025-2031. [PMID: 37530537 DOI: 10.1002/jbm.b.35302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 06/10/2023] [Accepted: 07/05/2023] [Indexed: 08/03/2023]
Abstract
To explore self-made graphene/β Graphene (G)/β- tricalcium phosphate, G/β- The effect of TCP composite scaffold material on osteogenic differentiation of BMSC. Preparation of G/β- TCP composite material was used to investigate the effect of composite material on bone marrow mesenchymal stem cell ossification/β- TCP material was used to treat primary BMSCs of rats. Cell morphology changes were observed under scanning electron microscopy, cell cycle and proliferation were detected by flow cytometry, and gene expression of chondrogenic genes Fibronectin, collagen I, collagen II, ICAM, and VCAM was detected by q-PCR. In addition, using osteogenic induction medium and G/β- TCP composite materials were co treated with BMSCs, and ALP and alizarin red staining were used to observe the effect of the materials on osteogenic differentiation. q-PCR was used to detect the gene expression of osteogenic related genes Runx2, OCN, and OPN. G/ β- After the TCP composite was co cultured with BMSC, the proportion of G0/G1 phase of BMSC cells was significantly increased, the cell proliferation ability was enhanced, and the gene expression of fibronectin, collagen I, collagen II, ICAM, and VCAM were significantly increased. The ALP staining results indicate that BMSC in G/β- After treatment with TCP composite material, significant enhancement of osteogenic ability was observed at 7,14 and 21 days. In addition, BMSC in G/β- A significant increase in calcium deposition was observed at 7,14 and 21 days after treatment with TCP composite materials. The effect of different time points on the expression of osteogenic related genes varies. At 7 and 14 days, the expression of RUNX2 was significantly reduced compared to the control, but significantly increased at 21 days; OCN significantly increased on the 21st day; OPN significantly increased at 14 days. G/β- TCP materials significantly promote the osteogenic differentiation of BMSCs.
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Affiliation(s)
- Hairong Su
- Department of Traditional Chinese Medicine, Maoming People's Hospital, Maoming, Guandong, China
| | - Yong Liao
- Department of Pharmacy, Maoming People's Hospital, Maoming, Guandong, China
| | - Xiaolu Yuan
- Department of Pathology, Maoming People's Hospital, Maoming, Guandong, China
| | - Jianhui Huang
- Department of Spine Surgery, Maoming People's Hospital, Maoming, Guandong, China
| | - Ya Chen
- Department of Spine Surgery, Maoming People's Hospital, Maoming, Guandong, China
| | - Binxiu Zhao
- Department of Spine Surgery, Maoming People's Hospital, Maoming, Guandong, China
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3
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Hu T, Liu L, Lam RWM, Toh SY, Abbah SA, Wang M, Ramruttun AK, Bhakoo K, Cool S, Li J, Cho-Hong Goh J, Wong HK. Bone marrow mesenchymal stem cells with low dose bone morphogenetic protein 2 enhances scaffold-based spinal fusion in a porcine model. J Tissue Eng Regen Med 2021; 16:63-75. [PMID: 34687157 DOI: 10.1002/term.3260] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 08/20/2021] [Accepted: 10/15/2021] [Indexed: 11/07/2022]
Abstract
High doses bone morphogenetic protein 2 (BMP-2) have resulted in a series of complications in spinal fusion. We previously established a polyelectrolyte complex (PEC) carrier system that reduces the therapeutic dose of BMP-2 in both rodent and porcine spinal fusion models. This study aimed to evaluate the safety and efficacy of the combination of bone marrow mesenchymal stem cells (BMSCs) and low dose BMP-2 delivered by PEC for bone regeneration in a porcine model of anterior lumbar interbody spinal fusion (ALIF) application. Six Yorkshire pigs underwent a tri-segmental (L2/L3; L3/L4; L4/L5) ALIF in four groups, namely: (a) BMSCs + 25 μg BMP-2/PEC (n = 9), (b) 25 μg BMP-2/PEC (n = 3), (c) BMSCs (n = 3), and (d) 50 μg BMP-2/absorbable collagen sponge (n = 3). Fusion outcomes were evaluated by radiography, biomechanical testing, and histological analysis after 12 weeks. Mean radiographic scores at 12 weeks were 2.7, 2.0, 1.0, and 1.0 for Groups 1 to 4, respectively. μ-CT scanning, biomechanical evaluation, and histological analysis demonstrated solid fusion and successful bone regeneration in Group 1. In contrast, Group 2 showed inferior quality and slow rate of fusion, and Groups 3 and 4 failed to fuse any of the interbody spaces. There was no obvious evidence of seroma formation, implant rejection, or any other complications in all groups. The results suggest that the combination of BMSCs and low dose BMP-2/PEC could further lower down the effective dose of the BMP-2 and be used as a bone graft substitute in the large animal ALIF model.
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Affiliation(s)
- Tao Hu
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Spine Surgery, Tongji University School of Medicine, Shanghai East Hospital, Shanghai, China
| | - Ling Liu
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, Singapore, Singapore
| | - Raymond Wing Moon Lam
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Soo Yein Toh
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Sunny Akogwu Abbah
- Department of Obstetrics and Gynaecology, Portiuncula University Hospital Ballinasloe, Galway, Ireland.,CÚRAM, Centre for Research in Medical Devices, National University of Ireland, Galway, Ireland
| | - Ming Wang
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Amit Kumarsing Ramruttun
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Kishore Bhakoo
- Singapore Bioimaging Consortium, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Simon Cool
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Jun Li
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, Singapore, Singapore
| | - James Cho-Hong Goh
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore, Singapore, Singapore
| | - Hee-Kit Wong
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,NUS Tissue Engineering Programme (NUSTEP), Life Sciences Institute, Singapore, Singapore
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Advances in the modification of injectable calcium-phosphate-based bone cements for clinical application. Chin Med J (Engl) 2020; 133:2610-2612. [PMID: 32960840 PMCID: PMC7722559 DOI: 10.1097/cm9.0000000000001092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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5
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A triple-coated ligament graft to facilitate ligament-bone healing by inhibiting fibrogenesis and promoting osteogenesis. Acta Biomater 2020; 115:160-175. [PMID: 32791348 DOI: 10.1016/j.actbio.2020.07.054] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 07/26/2020] [Accepted: 07/30/2020] [Indexed: 02/07/2023]
Abstract
Absence of ligament-bone healing due to poor bioactivity and hyperplasia of fibrous tissue caused by immune response severely impairs ligament grafts' functional duration in anterior cruciate ligament (ACL) reconstruction. While osteogenic modification is a popular technique for promoting ligament-bone integration, inadequate osseointegration remains a common experience, due to occupying fibrous hyperplasia and impaired osteogenesis potential. In the present study, a triple-nano-coating polyethylene terephthalate (PET) graft was developed by polydopamine self-assembly, chondroitin sulfate (CS) chemical-grafting and BMP-2 physical-immobilization to facilitate robust ligament-bone healing, The CS/polydopamine-modified PET (C-pPET) graft was demonstrated to inhibit fibrogenesis by regulating polarization of macrophages and promoting the secretion of anti-inflammatory factors. Moreover, the immunoregulatory function of CS cooperated with BMP-2 to facilitate osteogenic differentiation of stem cells, promoting the expression of ALP, Runx2, OCN and COL I. Bone regeneration was significantly enhanced at early-middle stage in the BMP-loaded pPET (B/pPET) group, while occurring at middle-late stage in the C-pPET group. Continuous new bone formation and optimal ligament-bone healing were observed in the B/C-pPET group via sequential and synergistic immune osteogenesis by CS and cytokine osteogenesis by BMP-2. Thus, the present study revealed a practical avenue for the promotion of ligament-bone healing through the development of a triple-nano-coating engineered ligament combining immunoregulatory anti-fibrogenesis and sequential-synergistic osteogenesis, which holds a great potential for improving the clinical efficacy of ligament graft in ACL reconstruction. STATEMENT OF SIGNIFICANCE: A triple-nano-coating polyethylene terephthalate (PET) graft was developed by polydopamine self-assembly, chondroitin sulfate (CS) chemical-grafting and BMP-2 physical-immobilization to facilitate robust ligament-bone healing. This study demonstrated that the multifunctional ligament grafts could reshape the local immune microenvironment by regulating macrophage phenotype and immune cytokine secretion to inhibit the fibrous hyperplasia and regulate stem cell towards osteogenic differentiation to promote bone regeneration. The present study demonstrates that efficient ligament-bone healing is achieved via the combination of immunoregulatory anti-fibrogenesis and dual osteogenesis of immunoregulation and cytokine induction.
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6
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Supercritical fluid-assisted controllable fabrication of open and highly interconnected porous scaffolds for bone tissue engineering. SCIENCE CHINA-LIFE SCIENCES 2019; 62:1670-1682. [PMID: 31025172 DOI: 10.1007/s11427-018-9393-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 12/10/2018] [Indexed: 01/13/2023]
Abstract
Recently tremendous progress has been evidenced by the advancements in developing innovative three-dimensional (3D) scaffolds using various techniques for addressing the autogenous grafting of bone. In this work, we demonstrated the fabrication of porous polycaprolactone (PCL) scaffolds for osteogenic differentiation based on supercritical fluid-assisted hybrid processes of phase inversion and foaming. This eco-friendly process resulted in the highly porous biomimetic scaffolds with open and interconnected architectures. Initially, a 23 factorial experiment was designed for investigating the relative significance of various processing parameters and achieving better control over the porosity as well as the compressive mechanical properties of the scaffold. Then, single factor experiment was carried out to understand the effects of various processing parameters on the morphology of scaffolds. On the other hand, we encapsulated a growth factor, i.e., bone morphogenic protein-2 (BMP-2), as a model protein in these porous scaffolds for evaluating their osteogenic differentiation. In vitro investigations of growth factor loaded PCL scaffolds using bone marrow stromal cells (BMSCs) have shown that these growth factor-encumbered scaffolds were capable of differentiating the cells over the control experiments. Furthermore, the osteogenic differentiation was confirmed by measuring the cell proliferation, and alkaline phosphatase (ALP) activity, which were significantly higher demonstrating the active bone growth. Together, these results have suggested that the fabrication of growth factor-loaded porous scaffolds prepared by the eco-friendly hybrid processing efficiently promoted the osteogenic differentiation and may have a significant potential in bone tissue engineering.
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Wang C, Wang Y, Liu N, Cai C, Xu L. Effect of tumor necrosis factor α on ability of SHED to promote osteoclastogenesis during physiological root resorption. Biomed Pharmacother 2019; 114:108803. [PMID: 30951949 DOI: 10.1016/j.biopha.2019.108803] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/14/2019] [Accepted: 03/19/2019] [Indexed: 01/09/2023] Open
Abstract
Physiological root resorption of deciduous teeth is a normal phenomenon, however, the potential mechanisms underlying this process remain unclear. This study aimed to investigate ability of stem cells from human exfoliated deciduous teeth (SHED) on promoting the osteoclastic differentiation of osteoclast precursors and clarify mechanisms underlying this process in vitro. SHED and dental pulp stem cells (DPSCs) were obtained from deciduous teeth and healthy permanent teeth. An indirect co-culture system of SHED or DPSCs were used. The osteoclast precursor peripheral blood mononuclear cells (PBMCs) were established. Ability of SHED and DPSCs in promoting osteoclastogenesis was determined using triiodothyronine receptor auxiliary protein (TRAP) staining, real-time real-time PCR (RT-PCR) and western blotting. The effect of inflammation on the pro-osteoclastogenesis ability of SHED was determined using enzyme linked immunosorbent assay (ELISA), RT-PCR and western blotting. The function of the nuclear factor-κB (NF-κB) pathway in promoting the osteoclastogenesis ability of SHED was determined using RT-PCR and western blotting. SHED exhibited an increased ability to promote osteoclastic differentiation. Expression of tumor necrosis factor-α (TNF-α) was significantly higher in SHED than in DPSCs. Expression of cathepsin K (CTSK), TRAP, and receptor-activator of nuclear-factor-κ B ligand (RANKL), RANKL/osteoprotegerin (OPG) ratio, and expression of cytoplasmic phosphorylated inhibitor of NF-κB α (p-IκBα) and nuclear p65 were markedly up-regulated in SHED post the TNF-α treatment but decreased following NF-κB inhibition. In conclusion, inflammatory cytokine TNF-α appeared to activate NF-κB pathway to up-regulate expression of NF-κB, enhancing ability of SHED in promoting osteoclastogenesis via regulating RANKL/OPG expression.
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Affiliation(s)
- Chen Wang
- Department of Stomatology, Eight Medical Center,General Hospital of Chinese PLA, Beijing 100853, China
| | - Yuchen Wang
- Department of Orthodontics, First Medical Center, General Hospital of Chinese PLA, Beijing 100091, China
| | - Na Liu
- Department of Orthodontics, First Medical Center, General Hospital of Chinese PLA, Beijing 100091, China
| | - Chuan Cai
- Department of Orthodontics, First Medical Center, General Hospital of Chinese PLA, Beijing 100091, China
| | - Lulu Xu
- Department of Orthodontics, First Medical Center, General Hospital of Chinese PLA, Beijing 100091, China.
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8
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Tan L, Zhang Y, Huang Y, Luo Y, Liu Y. Preservation of alveolar ridge after tooth extraction with hypoxia-inducible factor-1α protein in a dog model. Exp Ther Med 2019; 17:2913-2920. [PMID: 30936961 PMCID: PMC6434234 DOI: 10.3892/etm.2019.7301] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 10/26/2018] [Indexed: 12/12/2022] Open
Abstract
Hypoxia-inducible factor (HIF)-1α protein, which is upregulated by hypoxia, serves an important role in angiogenesis during osteogenesis. The aim of the present study was to investigate the effect of HIF-1α on alveolar ridge preservation in a dog tooth extraction model. Six beagle dogs were used in the present study. The second and fourth premolar teeth of the lower jaws on both sides were extracted. Two unilateral extraction sockets were randomly selected and filled with Bio-Oss and Bio-Oss + HIF-1α. The contralateral sockets remained unfilled and served as the negative control. Micro-computed tomography examination and histological staining were performed to examine the difference of new bone formation among the three groups. Western blotting and reverse transcription-quantitative polymerase chain reaction analysis were used to detect the expression levels of osteogenesis- and angiogenesis-associated genes in the bone tissues of the three groups. Twelve weeks post-surgery, trabecular bone formation in the Bio-Oss + HIF-1α group was significantly increased compared with the other groups. The expression levels of osteogenesis-associated genes (runt-related transcription factor 2, osteoblast-specific transcription factor osterix and osteocalcin) and angiogenesis-associated genes (HIF-1α and vascular endothelial growth factor) were all significantly increased in the Bio-Oss + HIF-1α group compared with the other two groups (P<0.05). The present results indicated that Bio-Oss with HIF-1α can promote osteogenesis and angiogenesis in vivo and may be used as an effective treatment for the preservation of the alveolar ridge.
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Affiliation(s)
- Luanjun Tan
- Department of Stomatology, Shanghai East Hospital Affiliated with Tongji University, Shanghai 200120, P.R. China
| | - Yingdi Zhang
- Department of Stomatology, Shanghai East Hospital Affiliated with Tongji University, Shanghai 200120, P.R. China
| | - Yuanliang Huang
- Department of Stomatology, Shanghai East Hospital Affiliated with Tongji University, Shanghai 200120, P.R. China
| | - Yuan Luo
- Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai 200031, P.R. China.,Department of Oral Surgery, Shanghai Stomatological Hospital, Fudan University, Shanghai 200031, P.R. China
| | - Yuehua Liu
- Department of Orthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai 200031, P.R. China.,Oral Biomedical Engineering Laboratory, Shanghai Stomatological Hospital, Fudan University, Shanghai 200031, P.R. China
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Abstract
As an extension of percutaneous vertebroplasty (PVP), percutaneous osteoplasty (POP) refers broadly to percutaneous bone cement injected into various parts of the body and narrowly to cement injected into extraspinal bone lesions. POP mainly includes such surgeries as percutaneous sacroplasty, percutaneous acetabuloplasty, percutaneous femoral osteoplasty, and percutaneous iliac osteoplasty (Figure 1). Currently, POP is a positive and an effective treatment for extraspinal bone lesions in that it can rapidly relieve pain, effectively prevent pathological fractures, and partially inactivate tumors, with few complications. The aim of this review is to detail the POP techniques and report their safety and efficacy in the treatment of extraspinal metastases.
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Affiliation(s)
- Qinghua Tian
- Department of Radiology, the Affiliated Sixth People's Hospital, Shanghai Jiaotong University, Shanghai 200233, China
| | - Yongde Cheng
- Department of Radiology, the Affiliated Sixth People's Hospital, Shanghai Jiaotong University, Shanghai 200233, China
| | - Chungen Wu
- Department of Radiology, the Affiliated Sixth People's Hospital, Shanghai Jiaotong University, Shanghai 200233, China
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10
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Um S, Kim HY, Seo BM. Effects of BMP-2 on the osteogenic differentiation of bone marrow stem cells in fibrous dysplasia. Oral Dis 2018; 24:1057-1067. [DOI: 10.1111/odi.12869] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 03/14/2018] [Accepted: 04/07/2018] [Indexed: 12/17/2022]
Affiliation(s)
- S Um
- Biotooth Engineering Lab; Dental Research Institute; Dental Regenerative Biotechnology; Department of Dental Science; School of Dentistry; Seoul National University; Seoul Korea
| | - HY Kim
- Biotooth Engineering Lab; Department of Oral and Maxillofacial Surgery; Craniomaxillofacial Life Science; Dental Research Institute; School of Dentistry; Seoul National University; Seoul Korea
| | - B-M Seo
- Biotooth Engineering Lab; Department of Oral and Maxillofacial Surgery; Craniomaxillofacial Life Science; Dental Research Institute; School of Dentistry; Seoul National University; Seoul Korea
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Peng W, Zhang J, Zhang H, Liu G, Dong W, Zhang F. Effects of lentiviral transfection containing bFGF gene on the biological characteristics of rabbit BMSCs. J Cell Biochem 2018; 119:8389-8397. [DOI: 10.1002/jcb.27034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 04/06/2018] [Indexed: 02/06/2023]
Affiliation(s)
- Wuxun Peng
- Department of Emergency OrthopedicsAffiliated Hospital of Guizhou Medical UniversityChina
| | - Jian Zhang
- Department of Emergency OrthopedicsAffiliated Hospital of Guizhou Medical UniversityChina
| | - Huai Zhang
- Department of Emergency OrthopedicsAffiliated Hospital of Guizhou Medical UniversityChina
| | - Gang Liu
- Department of Emergency OrthopedicsAffiliated Hospital of Guizhou Medical UniversityChina
| | - Wentao Dong
- Department of Emergency OrthopedicsAffiliated Hospital of Guizhou Medical UniversityChina
| | - Fei Zhang
- Department of Emergency OrthopedicsAffiliated Hospital of Guizhou Medical UniversityChina
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An SY, Heo JS. Low oxygen tension modulates the osteogenic differentiation of mouse embryonic stem cells. Tissue Cell 2018; 52:9-16. [PMID: 29857833 DOI: 10.1016/j.tice.2018.03.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 03/08/2018] [Accepted: 03/13/2018] [Indexed: 12/17/2022]
Abstract
This study examined the effects of low oxygen tension on the osteogenic differentiation of embryonic stem cells (ESCs) in a three-dimensional culture system. The high expression levels of hypoxia-related proteins hypoxia-inducible factor-1α and vascular endothelial growth factor were first validated in ESCs subjected to hypoxic conditions compared with normoxic controls. The osteogenic differentiation of hypoxic ESCs with either osteogenic or osteogenic factor-free media was subsequently evaluated by measuring alkaline phosphatase activity, intracellular calcium levels, matrix mineralization, and the protein levels of osteogenic markers Runt-related transcription factor 2 and osterix. We confirmed that hypoxia significantly stimulated ESC osteogenic activity; the strongest stimulation of ESC osteogenesis was exerted when cells were grown in osteogenic media. To identify differentially expressed genes associated with hypoxia-induced ESC differentiation, we performed microarray analysis of ESCs cultured in osteogenic media under normoxic and hypoxic conditions. This study demonstrated that differences in oxygen tension induced the differential expression of genes known to play roles in such processes as skeletal system development and signaling pathways for bone morphogenetic protein, Wnt, Notch, mitogen-activated protein kinase, and integrin. These findings reveal the effects of low oxygen tension on osteogenic progression in ESCs and provide insight into the molecular pathways that regulate ESC differentiation following exposure to hypoxia.
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Affiliation(s)
- Seong Yeong An
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology, School of Dentistry, Kyung Hee University, 26 Kyunghee-daero, Dongdaemun-gu, Seoul 130-701, South Korea
| | - Jung Sun Heo
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology, School of Dentistry, Kyung Hee University, 26 Kyunghee-daero, Dongdaemun-gu, Seoul 130-701, South Korea.
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