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Bai Y, Li X, Wu K, Heng BC, Zhang X, Deng X. Biophysical stimuli for promoting bone repair and regeneration. MEDICAL REVIEW (2021) 2025; 5:1-22. [PMID: 39974560 PMCID: PMC11834751 DOI: 10.1515/mr-2024-0023] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 06/19/2024] [Indexed: 02/21/2025]
Abstract
Bone injuries and diseases are associated with profound changes in the biophysical properties of living bone tissues, particularly their electrical and mechanical properties. The biophysical properties of healthy bone are attributed to the complex network of interactions between its various cell types (i.e., osteocytes, osteoclast, immune cells and vascular endothelial cells) with the surrounding extracellular matrix (ECM) against the backdrop of a myriad of biomechanical and bioelectrical stimuli arising from daily physical activities. Understanding the pathophysiological changes in bone biophysical properties is critical to developing new therapeutic strategies and novel scaffold biomaterials for orthopedic surgery and tissue engineering, as well as provides a basis for the application of various biophysical stimuli as therapeutic agents to restore the physiological microenvironment of injured/diseased bone tissue, to facilitate its repair and regeneration. These include mechanical, electrical, magnetic, thermal and ultrasound stimuli, which will be critically examined in this review. A significant advantage of utilizing such biophysical stimuli to facilitate bone healing is that these may be applied non-invasively with minimal damage to surrounding tissues, unlike conventional orthopedic surgical procedures. Furthermore, the effects of such biophysical stimuli can be localized specifically at the bone defect site, unlike drugs or growth factors that tend to diffuse away after delivery, which may result in detrimental side effects at ectopic sites.
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Affiliation(s)
- Yunyang Bai
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xiaochan Li
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Ke Wu
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
| | - Boon C. Heng
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xuehui Zhang
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing, China
- National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, NMPA Key Laboratory for Dental Materials, Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Xuliang Deng
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing, China
- National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, NMPA Key Laboratory for Dental Materials, Beijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
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Xia S, Liu D, Jiang K, Cao M, Lou Z, Cheng R, Yi J, Yin A, Jiang Y, Cheng K, Weng W, Shi B, Tang B. Photothermal driven BMSCs osteogenesis and M2 macrophage polarization on polydopamine-coated Ti 3C 2 nanosheets/poly(vinylidene fluoride trifluoroethylene) nanocomposite coatings. Mater Today Bio 2024; 27:101156. [PMID: 39081463 PMCID: PMC11287002 DOI: 10.1016/j.mtbio.2024.101156] [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: 04/25/2024] [Revised: 07/11/2024] [Accepted: 07/12/2024] [Indexed: 08/02/2024] Open
Abstract
Mild thermal stimulation plays an active role in bone tissue repair and regeneration. In this work, a bioactive polydopamine/Ti3C2/poly(vinylidene fluoride trifluoroethylene) (PDA/Ti3C2/P(VDF-TrFE)) nanocomposite coating with excellent near-infrared light (NIR)-triggered photothermal effect was designed to improve the osteogenic ability of implants. By incorporating dopamine (DA)-modified Ti3C2 nanosheets into the P(VDF-TrFE) matrix and combining them with alkali initiated in situ polymerization, the resulting PDA/Ti3C2/P(VDF-TrFE) nanocomposite coating gained high adhesion strength on Ti substrate, excellent tribological and corrosion resistance properties, which was quite important for clinical application of implant coatings. Cell biology experiments showed that NIR-triggered mild thermal stimulation on the coating surface promoted cell spreading and growth of BMSCs, and also greatly upregulated the osteogenic markers, including Runt-Related Transcription Factor 2 (RUNX2), alkaline phosphatase (ALP), osteopontin (OPN), osteocalcin (OCN). Simultaneously, the synthesis of heat shock protein 47 (HSP47) was significantly promoted by the mild thermal stimulation, which strengthened the specific interaction between HSP47 and collagen Ⅰ (COL-Ⅰ), thereby activating the integrin-mediated MEK/ERK osteogenic differentiation signaling pathway. In addition, the results also showed that the mild thermal stimulation induced the polarization of macrophages towards M2 phenotype, which can attenuate the inflammatory response of injured bone tissue. Antibacterial results indicated that the coating exhibited an outstanding antibacterial ability against S. aureus and E. coli. Conceivably, the versatile implant bioactive coatings developed in this work will show great application potential for implant osseointegration.
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Affiliation(s)
- Sanqiang Xia
- School of Materials and Textile Engineering, Jiaxing University, Jiaxing, 314001, China
- The Affiliated Hospital of Jiaxing University, Jiaxing, 314001, China
| | - Dun Liu
- Division of Spine Surgery, Department of Orthopedic Surgery, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Kanling Jiang
- The Affiliated Hospital of Jiaxing University, Jiaxing, 314001, China
| | - Miao Cao
- School of Materials and Textile Engineering, Jiaxing University, Jiaxing, 314001, China
| | - Zhenqi Lou
- The Affiliated Hospital of Jiaxing University, Jiaxing, 314001, China
| | - Ruobing Cheng
- School of Materials and Textile Engineering, Jiaxing University, Jiaxing, 314001, China
| | - Jie Yi
- School of Materials and Textile Engineering, Jiaxing University, Jiaxing, 314001, China
| | - Anlin Yin
- School of Materials and Textile Engineering, Jiaxing University, Jiaxing, 314001, China
| | - Yi Jiang
- The Affiliated Hospital of Jiaxing University, Jiaxing, 314001, China
| | - Kui Cheng
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027, China
| | - Wenjian Weng
- School of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027, China
| | - Benlong Shi
- Division of Spine Surgery, Department of Orthopedic Surgery, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Bolin Tang
- School of Materials and Textile Engineering, Jiaxing University, Jiaxing, 314001, China
- Nanotechnology Research Institute, G60 STI Valley Industry & Innovation Institute, Jiaxing University, Jiaxing, 314001, China
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Zhang M, Peng X, Xu H, Sun X, Liu Y, Li Q, Ding Y, Ding S, Luo J, Xie J, Li J. Photoacoustic Imaging-Guided Self-Adaptive Hyperthermia Supramolecular Cascade Nano-Reactor for Diabetic Periodontal Bone Regeneration. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2404143. [PMID: 38785180 PMCID: PMC11304269 DOI: 10.1002/advs.202404143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/13/2024] [Indexed: 05/25/2024]
Abstract
Commencing with the breakdown of the diabetic osteoimmune microenvironment, multiple pathogenic factors, including hyperglycemia, inflammation, hypoxia, and deleterious cytokines, are conjointly involved in the progression of diabetic periodontal bone regeneration. Based on the challenge of periodontal bone regeneration treatment and the absence of real-time feedback of blood oxygen fluctuation in diabetes mellitus, a novel self-adaptive hyperthermia supramolecular cascade nano-reactor ACFDG is constructed via one-step supramolecular self-assembly strategy to address multiple factors in diabetic periodontal bone regeneration. Hyperthermia supramolecular ACFDG possesses high photothermal conversion efficiency (32.1%), and it can effectively inhibit the vicious cycle of ROS-inflammatory cascade through catalytic cascade reactions, up-regulate the expression of heat shock proteins (HSPs) under near-infrared (NIR) irradiation, which promotes periodontal bone regeneration. Remarkably, ACFDG can provide real-time non-invasive diagnosis of blood oxygen changes during periodontal bone regeneration through photoacoustic (PA) imaging, thus can timely monitor periodontal hypoxia status. In conclusion, this multifunctional supramolecular nano-reactor combined with PA imaging for real-time efficacy monitoring provides important insights into the biological mechanisms of diabetic periodontal bone regeneration and potential clinical theranostics.
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Affiliation(s)
- Miao Zhang
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065P. R. China
| | - Xu Peng
- Experimental and Research Animal InstituteSichuan UniversityChengdu610065P. R. China
| | - Hong Xu
- Department of Orthopedic Surgery and Orthopedic Research InstitutionWest China HospitalSichuan UniversityChengdu610041P. R. China
| | - Xiaoning Sun
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065P. R. China
| | - Yizhu Liu
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065P. R. China
| | - Qian Li
- State Key Laboratory of Polymer Materials EngineeringPolymer Research InstituteSichuan UniversityChengdu610065P. R. China
| | - Yuan Ding
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065P. R. China
| | - Shaopei Ding
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065P. R. China
| | - Jun Luo
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065P. R. China
| | - Jing Xie
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065P. R. China
| | - Jianshu Li
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065P. R. China
- State Key Laboratory of Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengdu610041P. R. China
- Med‐X Center for MaterialsSichuan UniversityChengdu610041P. R. China
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Zhang J, Tang S, Ding N, Ma P, Zhang Z. Surface-modified Ti 3C 2 MXene nanosheets for mesenchymal stem cell osteogenic differentiation via photothermal conversion. NANOSCALE ADVANCES 2023; 5:2921-2932. [PMID: 37260501 PMCID: PMC10228341 DOI: 10.1039/d3na00187c] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 04/21/2023] [Indexed: 06/02/2023]
Abstract
In the field of bone tissue engineering, the practical application of growth factors is limited by various factors such as systemic toxicity, instability, and the potential to induce inflammation. To circumvent these limitations, the use of physical signals, such as thermal stimulation, to regulate stem cells has been proposed as a promising alternative. The present study aims to investigate the potential of the two-dimensional nanomaterial Ti3C2 MXene, which exhibits unique photothermal properties, to induce osteogenic differentiation of bone marrow-derived mesenchymal stem cells (BMSCs) via photothermal conversion. Surface modification of Ti3C2 MXene nanosheets with PVP (Ti3C2-PVP) was employed to enhance their colloidal stability in physiological solutions. Characterization and cellular experiments showed that Ti3C2-PVP nanosheets have favorable photothermal properties and biocompatibility. Our study demonstrated that the induction of photothermal stimulation by co-culturing Ti3C2-PVP nanosheets with BMSCs and subsequent irradiation with 808 nm NIR significantly promoted cell proliferation, adhesion and osteogenic differentiation of BMSCs. In conclusion, the results of this study suggest that Ti3C2-PVP is a promising material for bone tissue engineering applications as it can modulate the cellular functions of BMSCs through photothermal conversion.
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Affiliation(s)
- Jiebing Zhang
- School of Stomatology, Capital Medical University Beijing PR China
| | - Shuang Tang
- School of Stomatology, Capital Medical University Beijing PR China
| | - Ning Ding
- School of Stomatology, Capital Medical University Beijing PR China
| | - Ping Ma
- School of Stomatology, Capital Medical University Beijing PR China
| | - Zutai Zhang
- School of Stomatology, Capital Medical University Beijing PR China
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Zhang X, Li Q, Li L, Ouyang J, Wang T, Chen J, Hu X, Ao Y, Qin D, Zhang L, Xue J, Cheng J, Tao W. Bioinspired Mild Photothermal Effect-Reinforced Multifunctional Fiber Scaffolds Promote Bone Regeneration. ACS NANO 2023; 17:6466-6479. [PMID: 36996420 DOI: 10.1021/acsnano.2c11486] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Bone fractures are often companied with poor bone healing and high rates of infection. Early recruitment of mesenchymal stem cells (MSCs) is critical for initiating efficient bone repair, and mild thermal stimulation can accelerate the recovery of chronic diseases. Here, a bioinspired, staged photothermal effect-reinforced multifunctional scaffold was fabricated for bone repair. Uniaxially aligned electrospun polycaprolactone nanofibers were doped with black phosphorus nanosheets (BP NSs) to endow the scaffold with excellent near-infrared (NIR) responsive capability. Apt19S was then decorated on the surface of the scaffold to selectively recruit MSCs toward the injured site. Afterward, microparticles of phase change materials loaded with antibacterial drugs were also deposited on the surface of the scaffold, which could undergo a solid-to-liquid phase transition above 39 °C, triggering the release of payload to eliminate bacteria and prevent infection. Under NIR irradiation, photothermal-mediated up-regulation of heat shock proteins and accelerated biodegradation of BP NSs could promote the osteogenic differentiation of MSCs and biomineralization. Overall, this strategy shows the ability of bacteria elimination, MSCs recruitment, and bone regeneration promotion with the assistance of photothermal effect in vitro and in vivo, which emphasizes the design of a bioinspired scaffold and its potential for a mild photothermal effect in bone tissue engineering.
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Affiliation(s)
- Xiaodi Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Qi Li
- Department of Sports Medicine, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing 100191, China
- Center of Foot and Ankle Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Longfei Li
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jiang Ouyang
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Tong Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Junjie Chen
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiaoqing Hu
- Department of Sports Medicine, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing 100191, China
| | - Yingfang Ao
- Department of Sports Medicine, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing 100191, China
| | - Duotian Qin
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Liqun Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jiajia Xue
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jin Cheng
- Department of Sports Medicine, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing 100191, China
| | - Wei Tao
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
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Kim MA, Shin SR, Kim HJ, Lee JS, Lee CM. Chemo-photothermal therapeutic effect of chitosan-gelatin hydrogels containing methotrexate and melanin on a collagen-induced arthritis mouse model. Int J Biol Macromol 2022; 218:1013-1020. [PMID: 35926670 DOI: 10.1016/j.ijbiomac.2022.07.227] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 07/21/2022] [Accepted: 07/29/2022] [Indexed: 11/05/2022]
Abstract
Heat stimulation can promote osteoblast differentiation and bone formation. Combining photothermal therapy and chemotherapy is an effective strategy for treating rheumatoid arthritis (RA). Herein, we prepared chitosan/gelatin/β-glycerophosphate-melanin-methotrexate (CMM) hydrogel that could be used to perform simultaneous chemotherapy and photothermal therapy for patients with RA. The CMM solution was successfully converted to a gel state at body temperature. Due to intrinsic photothermal properties of melanin, CMM hydrogel exhibited effective temperature increase both in vitro and in vivo with increasing time of near-infrared (NIR) laser irradiation. After NIR laser irradiation, 50 % of methotrexate was rapidly released from the hydrogel within 3 h. Its release rate showed an instantaneous increase with additional NIR laser irradiation. After CMM hydrogel was injected directly into the paw joint of each collagen-induced arthritis (CIA) mouse followed by irradiation with a NIR laser (808 nm, 0.5 W/cm2, 3 min), swelling and redness at the inflamed area were significantly alleviated at 14 days after treatment. Micro-CT analysis confirmed that treated joints of mice were similar to normal joints. Hence, CMM hydrogel could be used as an attractive RA therapeutic agent for simultaneous chemo-photothermal therapy.
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Affiliation(s)
- Min Ah Kim
- Department of Biomedical Engineering, Chonnam National University Graduated School, Yeosu 59626, Republic of Korea
| | - So Ryung Shin
- Department of Aqualife Medicine, Chonnam National University Graduated School, Yeosu 59626, Republic of Korea
| | - Hyeon Jin Kim
- Department of Aqualife Medicine, Chonnam National University Graduated School, Yeosu 59626, Republic of Korea
| | - Jung Sick Lee
- Department of Aqualife Medicine, Chonnam National University, Yeosu 59626, Republic of Korea.
| | - Chang-Moon Lee
- Department of Biomedical Engineering, Chonnam National University Graduated School, Yeosu 59626, Republic of Korea; School of Healthcare and Biomedical Engineering, Chonnam National University, Yeosu 59626, Republic of Korea; Research Center of Healthcare Biomedical Engineering, Chonnam National University, Yeosu 59626, Republic of Korea.
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Thermal cycling effect on osteogenic differentiation of MC3T3-E1 cells loaded on 3D-porous Biphasic Calcium Phosphate (BCP) scaffolds for early osteogenesis. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:110027. [PMID: 31546388 DOI: 10.1016/j.msec.2019.110027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 06/21/2019] [Accepted: 07/26/2019] [Indexed: 12/30/2022]
Abstract
The application of heat stress on a defect site during the healing process is a promising technique for early bone regeneration. The primary goal of this study was to investigate the effect of periodic heat shock on bone formation. MC3T3-E1 cells were seeded onto biphasic calcium phosphate (BCP) scaffolds, followed by periodic heating to evaluate osteogenic differentiation. Heat was applied to cells seeded onto scaffolds at 41 °C for 1 h once, twice, and four times a day for seven days and their viability, morphology, and differentiation were analyzed. BCP scaffolds with interconnected porous structures mimic bone biology for cellular studies. MTT and confocal studies have shown that heat shock significantly increased cell proliferation without any toxic effects. Compared to non-heated samples, heat shock enhanced calcium deposition and mineralization, which could be visualized by SEM observation and Alizarin red S staining. Immunostaining images showed the localization of osteogenic proteins ALP and OPN on heat-shocked cells. qRT-PCR analysis revealed the presence of more osteospecific markers, osteopontin (OPN), osteocalcin, collagen type X, and Runx2, in the heat-shocked samples than in the non-heated sample. Periodic heat shock significantly upregulated both heat shock proteins (HSP70 and HSP27) in differentiated MC3T3-E1 cells. The results of this study demonstrated that periodically heat applied especially two times a day was better approach for osteogenic differentiation. Hence, this work provides a define temperature and time schedule for the development of a clinical heating device in future for early bone regeneration during the postsurgical period.
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Tong L, Liao Q, Zhao Y, Huang H, Gao A, Zhang W, Gao X, Wei W, Guan M, Chu PK, Wang H. Near-infrared light control of bone regeneration with biodegradable photothermal osteoimplant. Biomaterials 2019; 193:1-11. [DOI: 10.1016/j.biomaterials.2018.12.008] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 11/22/2018] [Accepted: 12/08/2018] [Indexed: 11/25/2022]
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Conditioned Medium Enhances Osteogenic Differentiation of Induced Pluripotent Stem Cell-Derived Mesenchymal Stem Cells. Tissue Eng Regen Med 2019; 16:141-150. [PMID: 30989041 DOI: 10.1007/s13770-018-0173-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 11/08/2018] [Accepted: 12/10/2018] [Indexed: 01/22/2023] Open
Abstract
Background Recent studies have shown that induced pluripotent stem cells (iPSCs) could be differentiated into mesenchymal stem cells (MSCs) with notable advantages over iPSCs per se. In order to promote the application of iPSC-MSCs for osteoregenerative medicine, the present study aimed to assess the ability of murine iPSC-MSCs to differentiate into osteoblast phenotype. Methods Osteogenic differentiation medium, blending mouse osteoblast-conditioned medium (CM) with basic medium (BM) at ratio 3:7, 5:5 and 7:3, were administered to iPSC-MSCs, respectively. After 14 days, differentiation was evaluated by lineage-specific morphology, histological stain, quantitative reverse transcription-polymerase chain reaction and immunostaining. Results The osteogenesis-related genes, alp, runx2, col1 and ocn expressions suggest that culture medium consisting of CM:BM at the ratio of 3:7 enhanced the osteogenic differentiation more than other concentrations that were tested. In addition, the alkaline phosphatase activity and osteogenic marker Runx2 expression demonstrate that the combination of CM and BM significantly enhanced the osteogenic differentiation of iPSC-MSCs. Conclusion In summary, this study has shown that osteoblast-derived CM can dramatically enhance osteogenic differentiation of iPSC-MSCs toward osteoblasts. Results from this work will contribute to optimize the osteogenic induction conditions of iPSC-MSCs and will assist in the potential application of iPSC-MSCs for bone tissue engineering.
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Lam J, Lee EJ, Clark EC, Mikos AG. Honing Cell and Tissue Culture Conditions for Bone and Cartilage Tissue Engineering. Cold Spring Harb Perspect Med 2017; 7:a025734. [PMID: 28348176 PMCID: PMC5710100 DOI: 10.1101/cshperspect.a025734] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
An avenue of tremendous interest and need in health care encompasses the regeneration of bone and cartilage. Over the years, numerous tissue engineering strategies have contributed substantial progress toward the realization of clinically relevant therapies. Cell and tissue culture protocols, however, show many variations that make experimental results among different publications challenging to compare. This collection surveys prevalent cell sources, soluble factors, culture medium formulations, environmental factors, and genetic modification approaches in the literature. The intent of consolidating this information is to provide a starting resource for scientists considering how to optimize the parameters for cell differentiation and tissue culture procedures within the context of bone and cartilage tissue engineering.
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Affiliation(s)
- Johnny Lam
- Department of Bioengineering, Rice University, Houston, Texas 77251
| | - Esther J Lee
- Department of Bioengineering, Rice University, Houston, Texas 77251
| | - Elisa C Clark
- Department of Bioengineering, Rice University, Houston, Texas 77251
| | - Antonios G Mikos
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77251
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Nascent osteoblast matrix inhibits osteogenesis of human mesenchymal stem cells in vitro. Stem Cell Res Ther 2015; 6:258. [PMID: 26696301 PMCID: PMC4688995 DOI: 10.1186/s13287-015-0223-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 01/18/2015] [Accepted: 11/03/2015] [Indexed: 01/02/2023] Open
Abstract
INTRODUCTION Adult mesenchymal stem cells (MSCs) are considered promising candidates for cell-based therapies. Their potential utility derives primarily from their immunomodulatory activity, multi-lineage differentiation potential, and likely progenitor cell function in wound healing and repair of connective tissues. However, in vitro, MSCs often senesce and spontaneously differentiate into osteoblasts after prolonged expansion, likely because of lack of regulatory microenvironmental signals. In vivo, osteoblasts that line the endosteal bone marrow surface are in close proximity to MSCs in the marrow stroma and thus may help to regulate MSC fate. METHODS We examined here how osteogenic differentiation of MSCs in vitro is affected by exposure to osteoblastic cells (OBCs). Human bone marrow MSCs were exposed to OBCs, derived by induced osteogenic differentiation of MSCs, either directly in contact co-cultures, or indirectly to OBC-conditioned medium or decellularized OBC extracellular matrix (ECM). RESULTS Our results showed that OBCs can act as negative regulators of MSC osteogenesis. mRNA expression profiling revealed that OBCs did not affect MSC osteogenesis in direct contact cultures or via secreted factors. However, seeding MSCs on decellularized OBC ECM significantly decreased expression of several osteogenic genes and maintained their fibroblastic morphologies. Proteomic analysis identified some of the candidate protein regulators of MSC osteogenesis. CONCLUSIONS These findings provide the basis for future studies to elucidate the signaling mechanisms responsible for osteoblast matrix-mediated regulation of MSC osteogenesis and to better manipulate MSC fate in vitro to minimize their spontaneous differentiation.
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De Godoy RF, Hutchens S, Campion C, Blunn G. Silicate-substituted calcium phosphate with enhanced strut porosity stimulates osteogenic differentiation of human mesenchymal stem cells. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:5387. [PMID: 25596863 DOI: 10.1007/s10856-015-5387-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 09/22/2014] [Indexed: 06/04/2023]
Abstract
While many synthetic ceramic bone graft substitutes (BGSs) have osteoconductive properties (e.g. provide a physical scaffold for osteointegration of surrounding bone tissue), certain BGSs are osteostimulative in that they actively upregulate mesenchymal stem cell proliferation and stimulate differentiation into osteoblast-like cells. The osteostimulative properties of silicate-substituted calcium phosphate with enhanced porosity (SiCaP EP) were evaluated in vitro with STRO-1+ immunoselected human bone marrow derived mesenchymal stem cells (HBMSCs). Osteostimulative materials (SiCaP) and Bioglass 45S5 (Bioglass) were also assessed as positive controls along with non-silicate substituted hydroxyapatite as a negative control. HBMSCs were also assessed on Thermanox discs cultured in basal and osteogenic media to determine when osteogenic differentiation could be significantly detected with this in vitro cell system. HBMSC viability and necrosis, total DNA content, alkaline phosphatase (ALP) expression, and osteocalcin expression were evaluated after 7, 14, 21, and 28 days. It was demonstrated that SiCaP EP is osteostimulative based on its propensity to support STRO-1+ HBMSC proliferation and ability to promote the differentiation of HBMSCs down the osteoblastic lineage from ALP-expressing, matrix-producing osteoblasts to Osteocalcin-producing pre-osteocytes without the presence of external osteogenic factors. SiCaP EP permitted greater HBMSC attachment as well as ALP and Osteocalcin expression than Bioglass which may be attributed to its microstructure and chemistry.
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Affiliation(s)
- Roberta Ferro De Godoy
- Institute of Orthopaedics and Musculo-Skeletal Science, John Scales Centre for Biomedical Engineering, Institute of Orthopaedics and Musculo-Skeletal Science, University College London, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
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Ikuta K, Urakawa H, Kozawa E, Hamada S, Ota T, Kato R, Honda H, Kobayashi T, Ishiguro N, Nishida Y. In vivoheat-stimulus-triggered osteogenesis. Int J Hyperthermia 2014; 31:58-66. [DOI: 10.3109/02656736.2014.988662] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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14
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Influence of heating and cyclic tension on the induction of heat shock proteins and bone-related proteins by MC3T3-E1 cells. BIOMED RESEARCH INTERNATIONAL 2014; 2014:354260. [PMID: 25013774 PMCID: PMC4071810 DOI: 10.1155/2014/354260] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Revised: 03/25/2014] [Accepted: 03/26/2014] [Indexed: 12/02/2022]
Abstract
Stress conditioning (e.g., thermal, shear, and tensile stress) of bone cells has been shown to enhance healing. However, prior studies have not investigated whether combined stress could synergistically promote bone regeneration. This study explored the impact of combined thermal and tensile stress on the induction of heat shock proteins (HSPs) and bone-related proteins by a murine preosteoblast cell line (MC3T3-E1). Cells were exposed to thermal stress using a water bath (44°C for 4 or 8 minutes) with postheating incubation (37°C for 4 hours) followed by exposure to cyclic strain (equibiaxial 3%, 0.2 Hz, cycle of 10-second tensile stress followed by 10-second rest). Combined thermal stress and tensile stress induced mRNA expression of HSP27 (1.41 relative fold induction (RFI) compared to sham-treated control), HSP70 (5.55 RFI), and osteopontin (1.44 RFI) but suppressed matrix metalloproteinase-9 (0.6 RFI) compared to the control. Combined thermal and tensile stress increased vascular endothelial growth factor (VEGF) secretion into the culture supernatant (1.54-fold increase compared to the control). Therefore, combined thermal and mechanical stress preconditioning can enhance HSP induction and influence protein expression important for bone tissue healing.
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15
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Li M, Fuchs S, Böse T, Schmidt H, Hofmann A, Tonak M, Unger R, Kirkpatrick CJ. Mild heat stress enhances angiogenesis in a co-culture system consisting of primary human osteoblasts and outgrowth endothelial cells. Tissue Eng Part C Methods 2013; 20:328-39. [PMID: 23998634 DOI: 10.1089/ten.tec.2013.0087] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The repair and regeneration of large bone defects, including the formation of functional vasculature, represents a highly challenging task for tissue engineering and regenerative medicine. Recent studies have shown that vascularization and ossification can be stimulated by mild heat stress (MHS), which would offer the option to enhance the bone regeneration process by relatively simple means. However, the mechanisms of MHS-enhanced angiogenesis and osteogenesis, as well as potential risks for the treated cells are unclear. We have investigated the direct effect of MHS on angiogenesis and osteogenesis in a co-culture system of human outgrowth endothelial cells (OECs) and primary osteoblasts (pOBs), and assessed cytotoxic effects, as well as the levels of various heat shock proteins (HSPs) synthesized under these conditions. Enhanced formation of microvessel-like structures was observed in co-cultures exposed to MHS (41°C, 1 h), twice per week, over a time period of 7-14 days. As shown by real-time polymerase chain reaction (PCR), the expression of vascular endothelial growth factor (VEGF), angiopoietin-1 (Ang-1), angiopoietin-2 (Ang-2), and tumor necrosis factor-alpha was up-regulated in MHS-treated co-cultures 24 h post-treatment. At the protein level, significantly elevated VEGF and Ang-1 concentrations were observed in MHS-treated co-cultures and pOB mono-cultures compared with controls, indicating paracrine effects associated with MHS-induced angiogenesis. MHS-stimulated co-cultures and OEC mono-cultures released higher levels of Ang-2 than untreated cultures. On the other hand MHS treatment of co-cultures did not result in a clear effect regarding osteogenesis. Nevertheless, real-time PCR demonstrated that MHS increased the expression of mitogen-activated protein kinase, interleukin-6, and bone morphogenetic protein 2, known as HSP-related molecules in angiogenic and osteogenic regulation pathways. In agreement with these observations, the expression of some selected HSPs also increased at both the mRNA and protein levels in MHS-treated co-cultures.
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Affiliation(s)
- Ming Li
- 1 REPAIR-Lab, Institute of Pathology, University Medical Centre of the Johannes Gutenberg University , Mainz, Germany
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16
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Palumbo S, Li WJ. Osteoprotegerin enhances osteogenesis of human mesenchymal stem cells. Tissue Eng Part A 2013; 19:2176-87. [PMID: 23597005 DOI: 10.1089/ten.tea.2012.0550] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Mesenchymal stem cells (MSCs) can differentiate into osteoblasts and hold promise for applications of bone regeneration such as bone tissue engineering. However, current approaches for in vitro osteogenesis cannot effectively induce osteogenesis and need to be modified to produce quality bone for clinical applications. Previous studies have shown that the conditioned medium (CM) from osteoblast culture enhances osteogenesis of MSCs, and soluble osteogenic factors in the CM may be involved in the regulation. However, these factors are not fully identified. In this study, we profiled soluble factors secreted from MG-63 cells using a comparative protein array and found that osteoprotegerin (OPG), known as a potent anti-osteoclastogenic protein, was at the highest relative level among 507 soluble molecules detected by the array. Furthermore, treating hMSCs with OPG before osteogenic induction significantly increased the expression of osteocalcin mRNA transcript and the production of calcium deposits compared to the untreated control cells, suggesting that OPG is capable of priming undifferentiated hMSCs for the enhancement of subsequent osteogenesis. Furthermore, we showed that the nuclear factor-kappaB (NF-κB) was activated by OPG in undifferentiated hMSCs and that blocking NF-κB activation before osteogenic induction decreased osteogenesis of OPG-pretreated cells upon receiving osteogenic stimuli. Taken together, our results suggest that OPG is a pro-osteogenic factor that can be used as an osteogenic supplement in a growth medium to prime the osteogenic capacity of undifferentiated hMSCs to enhance osteogenesis for bone tissue engineering.
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Affiliation(s)
- SunMi Palumbo
- Musculoskeletal Biology and Regenerative Medicine Laboratory, Department of Orthopedics and Rehabilitation, School of Medicine and Public Health, University of Wisconsin-Madison, WI 53705, USA
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17
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Chen J, Shi ZD, Ji X, Morales J, Zhang J, Kaur N, Wang S. Enhanced osteogenesis of human mesenchymal stem cells by periodic heat shock in self-assembling peptide hydrogel. Tissue Eng Part A 2012; 19:716-28. [PMID: 23072422 DOI: 10.1089/ten.tea.2012.0070] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The mechanisms for the heat-induced osteogenesis are not completely known and the thermal regulation of human mesenchymal stem cell (hMSC) differentiation is not well studied. In this study, the direct effects of mild heat shock (HS) on the differentiation of hMSCs into osteoblasts in self-assembling peptide hydrogel and on tissue culture plates were investigated. hMSCs isolated from human bone marrow were seeded in conventional culture plates (two-dimensional [2D] culture) and on the surface of three-dimensional (3D) PuraMatrix peptide hydrogel (3D culture), followed by 1 h HS at 41°C once a week during osteogenic differentiation. Alkaline phosphatase (ALP) activity was enhanced in both 2D and 3D cultures via periodic HS at early stage of differentiation; meanwhile, HS significantly increased the calcium deposition at day 19 and 27 of differentiation in both 2D and 3D cultures. The periodic HS also upregulated osteo-specific genes, osterix (OSX) on day 11, osteopontin (OP) on day 19, and bone morphogenetic protein 2 (BMP2) on day 25 in 2D culture. In 3D PuraMatrix culture, the runt-related transcription factor 2 (Runx2) was upregulated by HS on day 25 of differentiation. The heat shock protein 70 (HSP70) was significantly upregulated by HS in differentiated hMSCs analyzed at 24 h after HS. These results demonstrate that HS induced an earlier differentiation of hMSCs and enhanced the maturation of osteoblasts differentiated from hMSCs. Therefore, mild HS treatment may be potentially used to enhance the bone regeneration using hMSCs. Our data will guide the design of in vivo heating protocols and enable further investigations in thermal treatments of MSC osteogenesis for bone tissue engineering.
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Affiliation(s)
- Jing Chen
- Department of Biomedical Engineering, The City College of the City University of New York, New York, New York, USA
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18
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Dolan EB, Haugh MG, Tallon D, Casey C, McNamara LM. Heat-shock-induced cellular responses to temperature elevations occurring during orthopaedic cutting. J R Soc Interface 2012; 9:3503-13. [PMID: 22915633 DOI: 10.1098/rsif.2012.0520] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Severe heat-shock to bone cells caused during orthopaedic procedures can result in thermal damage, leading to cell death and initiating bone resorption. By contrast, mild heat-shock has been proposed to induce bone regeneration. In this study, bone cells are exposed to heat-shock for short durations occurring during surgical cutting. Cellular viability, necrosis and apoptosis are investigated immediately after heat-shock and following recovery of 12, 24 h and 4 days, in osteocyte-like MLO-Y4 and osteoblast-like MC3T3-E1 cells, using flow cytometry. The regeneration capacity of heat-shocked Balb/c mesenchymal stem cells (MSCs) and MC3T3-E1s has been investigated following 7 and 14 day's recovery, by quantifying proliferation, differentiation and mineralization. An immediate necrotic response to heat-shock was shown in cells exposed to elevated temperatures (45°C, 47°C and most severe at 60°C). A longer-term apoptotic response is induced in MLO-Y4s and, to a lesser extent, in MC3T3-E1s. Heat-shock-induced differentiation and mineralization by MSCs. These findings indicate that heat-shock is more likely to induce apoptosis in osteocytes than osteoblasts, which might reflect their role as sensors detecting and communicating damage within bone. Furthermore, it is shown for the first time that mild heat-shock (less than equal to 47°C) for durations occurring during surgical cutting can positively enhance osseointegration by osteoprogenitors.
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Affiliation(s)
- E B Dolan
- Department of Mechanical and Biomedical Engineering, Biomechanics Research Centre (BMEC), National University of Ireland, Galway, Ireland
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Chung E, Rylander MN. Response of preosteoblasts to thermal stress conditioning and osteoinductive growth factors. Cell Stress Chaperones 2012; 17:203-14. [PMID: 22116637 PMCID: PMC3273562 DOI: 10.1007/s12192-011-0300-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2011] [Revised: 10/04/2011] [Accepted: 10/05/2011] [Indexed: 11/28/2022] Open
Abstract
Conditioning protocols involving mechanical stress independently or with chemical cues such as growth factors (GFs) possess significant potential to enhance bone regeneration. However, utilization of thermal stress conditioning alone or with GFs for bone therapy has been under-investigated. In this study, a preosteoblast cell line (MC3T3-E1) was exposed to treatment with water bath heating (44°C, 4 and 8 min) and osteoinductive GFs (bone morphogenetic protein-2 and transforming growth factor-β1) individually or in combination to investigate whether these stimuli could promote induction of bone-related markers, an angiogenic factor, and heat shock proteins (HSPs). Cells remained viable when heating durations were less than 20 min at 40ºC, 16 min at 42ºC, and 10 min at 44ºC. Increasing heating duration at 44°C, promoted gene expression of HSPs, osteocalcin (OCN), and osteopontin (OPN) at 8 h post-heating (PH). Heating in combination with GFs caused the greatest gene induction of osteoprotegerin (OPG; 6.9- and 1.6-fold induction compared to sham-treated and GF only treated groups, respectively) and vascular endothelial growth factor (VEGF; 16.0- and 1.6-fold compared to sham and GF-only treated groups, respectively) at 8 h PH. Both heating and GFs independently suppressed the matrix metalloproteinase-9 (MMP-9) gene. GF treatment caused a more significant decrease in MMP-9 protein secretion to non-detectable levels compared to heating alone at 72 h PH. Secretion of OCN, OPN, and OPG increased with the addition of GFs but diminished with heating as measured by ELISA at 72 h PH. These results suggest that conditioning protocols utilizing heating and GFs individually or in combination can induce HSPs, bone-related proteins, and VEGF while also causing downregulation of osteoclastic activity, potentially providing a promising bone therapeutic strategy.
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Affiliation(s)
- Eunna Chung
- School of Biomedical Engineering and Sciences, Virginia Tech–Wake Forest University, Virginia Tech, ICTAS Bldg., Stanger Street (MC 0298), Blacksburg, VA 24061 USA
| | - Marissa Nichole Rylander
- School of Biomedical Engineering and Sciences, Virginia Tech–Wake Forest University, Virginia Tech, ICTAS Bldg., Stanger Street (MC 0298), Blacksburg, VA 24061 USA
- Department of Mechanical Engineering, Virginia Tech, Virginia Tech, ICTAS Bldg., Stanger Street (MC 0298), Blacksburg, VA 24061 USA
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20
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Kabiri M, Kul B, Lott WB, Futrega K, Ghanavi P, Upton Z, Doran MR. 3D mesenchymal stem/stromal cell osteogenesis and autocrine signalling. Biochem Biophys Res Commun 2012; 419:142-7. [PMID: 22266317 DOI: 10.1016/j.bbrc.2012.01.017] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2011] [Accepted: 01/05/2012] [Indexed: 01/11/2023]
Abstract
Mesenchymal stem/stromal cells (MSC) are rapidly becoming a leading candidate for use in tissue regeneration, with first generation of therapies being approved for use in orthopaedic repair applications. Capturing the full potential of MSC will likely require the development of novel in vitro culture techniques and devices. Herein we describe the development of a straightforward surface modification of an existing commercial product to enable the efficient study of three dimensional (3D) human bone marrow-derived MSC osteogenic differentiation. Hundreds of 3D microaggregates, of either 42 or 168 cells each, were cultured in osteogenic induction medium and their differentiation was compared with that occurring in traditional two dimensional (2D) monolayer cultures. Osteogenic gene expression and matrix composition was significantly enhanced in the 3D microaggregate cultures. Additionally, BMP-2 gene expression was significantly up-regulated in 3D cultures at day 3 and 7 by approximately 25- and 30-fold, respectively. The difference in BMP-2 gene expression between 2D and 3D cultures was negligible in the more mature day 14 osteogenic cultures. These data support the notion that BMP-2 autocrine signalling is up-regulated in 3D MSC cultures, enhancing osteogenic differentiation. This study provides both mechanistic insight into MSC differentiation, as well as a platform for the efficient generation of microtissue units for further investigation or use in tissue engineering applications.
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Affiliation(s)
- Mahboubeh Kabiri
- Stem Cell Therapies Laboratory, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Qld., Australia
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21
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Grässel S, Stöckl S, Jenei-Lanzl Z. Isolation, culture, and osteogenic/chondrogenic differentiation of bone marrow-derived mesenchymal stem cells. Methods Mol Biol 2012; 879:203-67. [PMID: 22610563 DOI: 10.1007/978-1-61779-815-3_14] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Musculoskeletal disorders, as non-healing fractures and large bone defects, articular cartilage and subchondral bone injuries, often result in lifelong chronic pain and compromised quality of life. Although generally a natural process, failure of large bone defects to heal such as after complex fractures, resection of tumours, infections, or revisions of joint replacements remains a critical challenge that requires more appropriate solutions as those currently available. In addition, regeneration of chondral and osteochondral defects continues to be a challenge until to date. A profound understanding of the underlying mechanisms of endogenous regeneration is a prerequisite for successful bone and cartilage regeneration. Presently, one of the most promising therapeutic approaches is cell-based tissue engineering which provides a healthy population of cells to the injured site. Use of differentiated cells has severe limitations; an excellent alternative would be the application of adult marrow stromal cells/mesenchymal stem cells (MSC) which possess extensive proliferation potential and proven capability to differentiate along the osteochondral pathway. The process of osteo-/chondrogenesis can be mimicked in vitro by inducing osteo-chondroprogenitor stem cells to undergo osteogenesis and chondrogenesis through exposure of osteo-/chondrogenic favourable microenvironmental, mechanical, and nutritional conditions. This chapter provides comprehensive protocols for the isolation, expansion, and osteo-/chondrogenic differentiation of adult bone marrow-derived MSC.
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Affiliation(s)
- Susanne Grässel
- Department of Orthopaedics, University of Regensburg and Centre for Biomedical Technology, BioPark, Regensburg, Germany.
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22
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Khojasteh A, Behnia H, Dashti SG, Stevens M. Current trends in mesenchymal stem cell application in bone augmentation: a review of the literature. J Oral Maxillofac Surg 2011; 70:972-82. [PMID: 21763048 DOI: 10.1016/j.joms.2011.02.133] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Revised: 02/14/2011] [Accepted: 02/21/2011] [Indexed: 01/10/2023]
Abstract
PURPOSE The literature regarding mesenchymal stem cell (MSC)-based bone reconstruction techniques are sparse and no comprehensive review of current methods has been performed. The aim of this article was to provide a discussion of clinical and experimental reports of MSC application in the reconstruction of bony defects in live models. MATERIALS AND METHODS This search was executed using the PubMed database with various combinations of related keywords. Currently published English-language studies that had applied MSCs as a part of their treatment protocol for reconstruction of bony defects in rat, rabbit, dog, and human models were reviewed. The included studies had reported substantiation that the applied cells were of MSC origin as a part of the study design. Publications inclusive to February 1, 2010 were evaluated. Of review of 187 found abstracts and full texts, 25 articles met the inclusion criteria. RESULT Based on this review, tremendous differences exist among investigators for the application of MSCs in bone augmentation procedures. These differences include not only species uniqueness but also a plethora of other variances, such as stem cell source, defect sites and sizes, carriers and constructs, use of additional growth factors, measured parameters, and methods of data collection. CONCLUSION Because of the multitude of protocols, range of parameters, and data in the current English-language literature, this review did not reach any significant conclusion as to the "most predictable" model in stem cell reconstruction. However, it does "shed light" on the need for additional collaborated studies using similar homogenous designs and data analysis in advancing the science of bone reconstruction using MSCs.
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Affiliation(s)
- Arash Khojasteh
- Division of Basic Sciences, Dental Research Center, Department of Oral and Maxillofacial Surgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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23
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Olkku A, Leskinen JJ, Lammi MJ, Hynynen K, Mahonen A. Ultrasound-induced activation of Wnt signaling in human MG-63 osteoblastic cells. Bone 2010; 47:320-30. [PMID: 20435172 DOI: 10.1016/j.bone.2010.04.604] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Revised: 02/25/2010] [Accepted: 04/23/2010] [Indexed: 11/30/2022]
Abstract
The benefit from an ultrasound (US) exposure for fracture healing has been clearly shown. However, the molecular mechanisms behind this effect are not fully known. Recently, the canonical Wnt signaling pathway has been recognized as one of the essential regulators of osteoblastogenesis and bone mass, and thereby considered crucial for bone health. Mechanical loading and fluid shear stress have been reported to activate the canonical Wnt signaling pathway in bone cells, but previous reports on the effects of therapeutic US on Wnt signaling in general or in bone, in particular, have not been published yet. Therefore, activation of Wnt signaling pathway was assayed in human osteoblastic cells, and indeed, this pathway was found to be activated in MG-63 cells through the phosphoinositol 3-kinase/Akt (PI3K/Akt) and mTOR cascades following a single 10 min US exposure (2 W, 1.035 MHz). In addition to the reporter assay results, the Wnt pathway activation was also observed as nuclear localization of beta-catenin. Wnt activation showed also temperature dependence at elevated temperatures, and the expression of canonical Wnt ligands was induced under the thermal exposures. However, existence of a specific, non-thermal US component was evident as well, perhaps evidence of a potential dual action of therapeutic US on bone. Neither US nor heat exposures affected cell viability in our experiments. In summary, this is the first study to report that Wnt signaling cascade, important for osteoblast function and bone health, is one of the pathways activated by therapeutic US as well as by hyperthermia in human osteoblastic cells. Our results provide evidence for the potential molecular mechanisms behind the beneficial effects of US on fracture healing. Combinations of US, heat, and possible pharmacological treatment could provide useful flexibility for clinical cases in treating various bone disorders.
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Affiliation(s)
- Anu Olkku
- School of Medicine, Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
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24
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Guo X, Park H, Liu G, Liu W, Cao Y, Tabata Y, Kasper FK, Mikos AG. In vitro generation of an osteochondral construct using injectable hydrogel composites encapsulating rabbit marrow mesenchymal stem cells. Biomaterials 2009; 30:2741-52. [PMID: 19232711 PMCID: PMC2877597 DOI: 10.1016/j.biomaterials.2009.01.048] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2008] [Accepted: 01/26/2009] [Indexed: 11/26/2022]
Abstract
Injectable, biodegradable hydrogel composites of crosslinked oligo(poly(ethylene glycol) fumarate) (OPF) and gelatin microparticles (MPs) were utilized to fabricate a bilayered osteochondral construct consisting of a chondrogenic layer and an osteogenic layer, and to investigate the differentiation of rabbit marrow mesenchymal stem cells (MSCs) encapsulated in both layers in vitro. The results showed that MSCs in the chondrogenic layer were able to undergo chondrogenic differentiation, especially in the presence of TGF-beta1-loaded MPs. In the osteogenic layer, cells maintained their osteoblastic phenotype. Although calcium deposition in the osteogenic layer was limited, cells in the osteogenic layer significantly enhanced chondrogenic differentiation of MSCs in the chondrogenic layer. The greatest effect was observed when MSCs were encapsulated with TGF-beta1-loaded MPs and cultured with osteogenic cells in the bilayered constructs. Overall, this study demonstrates the fabrication of bilayered hydrogel composites that mimic the structure and function of osteochondral tissue, along with the application of these composites as cell and growth factor carriers.
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Affiliation(s)
- Xuan Guo
- Department of Chemical and Biomolecular Engineering, Rice University, MS-362, P.O. Box 1892, Houston, TX, 77251-1892
| | - Hansoo Park
- Department of Bioengineering, Rice University, MS-142, P.O. Box 1892, Houston, TX, 77251-1892
| | - Guangpeng Liu
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai, 200011, China
| | - Wei Liu
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai, 200011, China
| | - Yilin Cao
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai, 200011, China
| | - Yasuhiko Tabata
- Department of Biomaterials, Field of Tissue Engineering, Institute for Frontier Medical Sciences, Kyoto University, 53 Kawara-cho Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - F. Kurtis Kasper
- Department of Bioengineering, Rice University, MS-142, P.O. Box 1892, Houston, TX, 77251-1892
| | - Antonios G. Mikos
- Department of Chemical and Biomolecular Engineering, Rice University, MS-362, P.O. Box 1892, Houston, TX, 77251-1892
- Department of Bioengineering, Rice University, MS-142, P.O. Box 1892, Houston, TX, 77251-1892
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25
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Kim NR, Lee DH, Ahn SJ, Lee IS, Yang HC. The differentiation-inducing effect of conditioned media obtained from dental pulp cells. ACTA ACUST UNITED AC 2009; 107:e54-9. [DOI: 10.1016/j.tripleo.2009.01.047] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2008] [Revised: 12/23/2008] [Accepted: 01/29/2009] [Indexed: 10/20/2022]
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