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Bone Regeneration in Small and Large Segmental Bone Defect Models after Radiotherapy Using Injectable Polymer-Based Biodegradable Materials Containing Strontium-Doped Hydroxyapatite Particles. Int J Mol Sci 2023; 24:ijms24065429. [PMID: 36982504 PMCID: PMC10049363 DOI: 10.3390/ijms24065429] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 02/26/2023] [Accepted: 03/07/2023] [Indexed: 03/14/2023] Open
Abstract
The reconstruction of bones following tumor excision and radiotherapy remains a challenge. Our previous study, performed using polysaccharide-based microbeads that contain hydroxyapatite, found that these have osteoconductivity and osteoinductive properties. New formulations of composite microbeads containing HA particles doped with strontium (Sr) at 8 or 50% were developed to improve their biological performance and were evaluated in ectopic sites. In the current research, we characterized the materials by phase-contrast microscopy, laser dynamic scattering particle size-measurements and phosphorus content, before their implantation into two different preclinical bone defect models in rats: the femoral condyle and the segmental bone. Eight weeks after the implantation in the femoral condyle, the histology and immunohistochemistry analyses showed that Sr-doped matrices at both 8% and 50% stimulate bone formation and vascularization. A more complex preclinical model of the irradiation procedure was then developed in rats within a critical-size bone segmental defect. In the non-irradiated sites, no significant differences between the non-doped and Sr-doped microbeads were observed in the bone regeneration. Interestingly, the Sr-doped microbeads at the 8% level of substitution outperformed the vascularization process by increasing new vessel formation in the irradiated sites. These results showed that the inclusion of strontium in the matrix-stimulated vascularization in a critical-size model of bone tissue regeneration after irradiation.
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Jiang Z, He J, Wang X, Zhu D, Li N, Ren L, Yang G. Nanomaterial-based cell sheet technology for regenerative medicine and tissue engineering. Colloids Surf B Biointerfaces 2022; 217:112661. [PMID: 35777168 DOI: 10.1016/j.colsurfb.2022.112661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 06/16/2022] [Accepted: 06/23/2022] [Indexed: 10/17/2022]
Abstract
Nanomaterial-based cell sheet technology has been reported to be an effective method in regenerative medicine and tissue engineering. Here, we summarized several types of nanomaterials used to harvest cell sheets. Currently, the technology is divided into four categories according to the mechanisms: light-induced cell sheet technology, thermo-responsive cell sheet technology, magnetic-controlled cell sheet technology, and reactive oxygen species (ROS)-induced cell sheet technology. Furthermore, some studies have been conducted to show that nanomaterial-based cell sheets produce satisfying outcomes in the regeneration of bone, skeletal muscle, cardiac tissue, and tendon, as well as angiogenesis and osseointegration. Nevertheless, some shortcomings still exist, such as comprehensive preparation, unclear safety, and cell quality. Thus, future studies should aim to produce more types of nanomaterials to solve this problem.
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Affiliation(s)
- Zhiwei Jiang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - Jin He
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - Xueting Wang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - Danji Zhu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - Na Li
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - Lingfei Ren
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - Guoli Yang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, China.
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Wang L, Wei X, Duan C, Yang J, Xiao S, Liu H, Sun J. Bone marrow mesenchymal stem cell sheets with high expression of hBD3 and CTGF promote periodontal regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2022; 133:112657. [PMID: 35034825 DOI: 10.1016/j.msec.2022.112657] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 12/12/2021] [Accepted: 01/06/2022] [Indexed: 12/31/2022]
Abstract
The multi-bacterial environment of the oral cavity makes it hard for periodontal regeneration. As a class of antimicrobial peptide, beta defensin has been found to show broad-spectrum antibacterial ability. In addition, connective tissue growth factor (CTGF) is demonstrated to play a great role in multi-physiological events such as angiogenesis, wound healing and, more importantly, fibrogenesis. In this study, human β defensin 3 (hBD3) and CTGF were co-transfected into bone marrow derived mesenchymal stem cells (BMSCs) for preparing cell sheets. The transfection efficiency was detected through fluorescence of eGFP and western blot assay. Our results showed that the hBD3 and CTGF proteins were highly and stably expressed in the BMSCs after transfection. The results of RT-PCR and induced differentiation indicated that hBD3 promoted osteogenic differentiation of BMSCs, while CTGF significantly increased fibrogenic differentiation even in the presence of hBD3. The BMSCs acquired stronger capacity in terms of promoting M2 polarization of RAW 264.7 macrophages fulfilled by the transfection and secretion of hBD3 and CTGF. To further evaluate the periodontal remodeling performance of cell sheets, a coralline hydroxyapatite (CHA)-chitosan based hydrogel-human tooth system was designed to simulate the natural periodontal environment. The results showed that dense extracellular matrix, oriented fiber arrangement, and abundant collagen deposition appeared in the area of BMSCs sheets after subcutaneous transplantation. Altogether, our data showed that the lentivirus transfected BMSCs sheets had a promising application prospect for periodontal repair.
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Affiliation(s)
- Li Wang
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, PR China
| | - Xinbo Wei
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, PR China
| | - Cuimi Duan
- Tissue Engineering Research Center, Beijing Institute of Basic Medical Sciences, PR China
| | - Jinjin Yang
- Department of Stomatology, The Fifth Medical Center, Chinese PLA General Hospital, Xisihuan Middle Road 100, Fengtai District, Beijing 100036, PR China
| | - Shengzhao Xiao
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, PR China
| | - Haifeng Liu
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, PR China.
| | - Jie Sun
- Department of Stomatology, The Fifth Medical Center, Chinese PLA General Hospital, Xisihuan Middle Road 100, Fengtai District, Beijing 100036, PR China.
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Stich T, Alagboso F, Křenek T, Kovářík T, Alt V, Docheva D. Implant-bone-interface: Reviewing the impact of titanium surface modifications on osteogenic processes in vitro and in vivo. Bioeng Transl Med 2022; 7:e10239. [PMID: 35079626 PMCID: PMC8780039 DOI: 10.1002/btm2.10239] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 06/08/2021] [Accepted: 06/13/2021] [Indexed: 12/12/2022] Open
Abstract
Titanium is commonly and successfully used in dental and orthopedic implants. However, patients still have to face the risk of implant failure due to various reasons, such as implant loosening or infection. The risk of implant loosening can be countered by optimizing the osteointegration capacity of implant materials. Implant surface modifications for structuring, roughening and biological activation in favor for osteogenic differentiation have been vastly studied. A key factor for a successful stable long-term integration is the initial cellular response to the implant material. Hence, cell-material interactions, which are dependent on the surface parameters, need to be considered in the implant design. Therefore, this review starts with an introduction to the basics of cell-material interactions as well as common surface modification techniques. Afterwards, recent research on the impact of osteogenic processes in vitro and vivo provoked by various surface modifications is reviewed and discussed, in order to give an update on currently applied and developing implant modification techniques for enhancing osteointegration.
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Affiliation(s)
- Theresia Stich
- Experimental Trauma Surgery, Department of Trauma SurgeryUniversity Regensburg Medical CentreRegensburgGermany
| | - Francisca Alagboso
- Experimental Trauma Surgery, Department of Trauma SurgeryUniversity Regensburg Medical CentreRegensburgGermany
| | - Tomáš Křenek
- New Technologies Research CentreUniversity of West BohemiaPilsenCzech Republic
| | - Tomáš Kovářík
- New Technologies Research CentreUniversity of West BohemiaPilsenCzech Republic
| | - Volker Alt
- Experimental Trauma Surgery, Department of Trauma SurgeryUniversity Regensburg Medical CentreRegensburgGermany
- Clinic and Polyclinic for Trauma Surgery, University Regensburg Medical CentreRegensburgGermany
| | - Denitsa Docheva
- Experimental Trauma Surgery, Department of Trauma SurgeryUniversity Regensburg Medical CentreRegensburgGermany
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Bagio DA, Julianto I, Margono A, Suprastiwi E. Increased VEGF-A Expression of Human Dental Pulp Stem Cells (hDPSCs) Cultured with Advanced Platelet Rich Fibrin (A-PRF). Open Dent J 2021. [DOI: 10.2174/1874210602115010569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background:
VEGF-A expression of human dental pulp stem cells (hDPSCs) can induce the angiogenesis process of dental pulp regeneration. This in vitro study aimed to analyze the effect of various concentrations of Advanced Platelet Rich Fibrin (A-PRF) conditioned media (CM) on the increased expression of vascular endothelial growth factor-A (VEGF-A) of hDPSCs.
Methods:
hDPSCs were collected from ten third molars extracted from nine healthy donors, cultured, and then harvested at the end of the third passage. The hDPSCs were seeded in four different CM (control group: hDPSCs + DMEM; 1% A-PRF CM group: hDPSCs + 1% A-PRF CM; 5% A-PRF CM group: hDPSCs + 5% A-PRF CM; 10% A-PRF CM group: hDPSCs + 10% A-PRF CM). All of the groups were cultured in biological triplicates (Triplo) and observed for 5, 12, and 24 hours. The VEGF-A protein expression of hDPSCs was measured using human VEGF-A ELISA at a wavelength of 405 nm. Data was analyzed with Kruskal Wallis and post hoc Mann Whitney test with p<0.05.
Results:
The VEGF-A expression rate of hDPSCs among all groups was statistically significantly different at 5, 12 and 24 hours of observations (p<0.05). Post hoc analysis test showed a statistically significant difference of hDPSCs’s VEGF-A expression between 5% A-PRF groups compared to other groups at 5 and 12 hours of observation (p<0.05). However, there were no statistically significant differences observed of hDPSCs’ VEGF-A expression at 24 hours of observation between 1%, 5% and 10% A-PRF groups (p>0.05).
Conclusion:
5% A-PRF CM was superior in increasing VEGF-A expression of hDPSCs at 5, 12 and 24 hours of observations.
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Toneatti DJ, Graf RR, Burkhard JP, Schaller B. Survival of dental implants and occurrence of osteoradionecrosis in irradiated head and neck cancer patients: a systematic review and meta-analysis. Clin Oral Investig 2021; 25:5579-5593. [PMID: 34401944 PMCID: PMC8443505 DOI: 10.1007/s00784-021-04065-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 06/29/2021] [Indexed: 12/24/2022]
Abstract
OBJECTIVES This systematic review assesses dental implant survival, calculates the incidence rate of osteoradionecrosis, and evaluates risk factors in irradiated head and neck cancer patients. MATERIALS AND METHODS Various databases (e.g., Medline/Embase using Ovid) and gray literature platforms were searched using a combination of keywords and subject headings. When appropriate, meta-analysis was carried out using a random effects model. Otherwise, pooled analysis was applied. RESULTS A total of 425 of the 660 included patients received radiotherapy. In total, 2602 dental implants were placed, and 1637 were placed in irradiated patients. Implant survival after an average follow-up of 37.7 months was 97% (5% confidence interval, CI 95.2%, 95% CI 98.3%) in nonirradiated patients and 91.9% (5% CI 87.7%, 95% CI: 95.3%) after an average follow-up of 39.8 months in irradiated patients. Osteoradionecrosis occurred in 11 cases, leading to an incidence of 3% (5% CI 1.6%, 95% CI 4.9%). The main factors impacting implant survival were radiation and grafting status, while factors influencing osteoradionecrosis could not be determined using meta-analysis. CONCLUSION Our data show that implant survival in irradiated patients is lower than in nonirradiated patients, and osteoradionecrosis is-while rare-a serious complication that any OMF surgeon should be prepared for. The key to success could be a standardized patient selection and therapy to improve the standard of care, reduce risks and shorten treatment time. CLINICAL RELEVANCE Our analysis provides further evidence that implant placement is a feasible treatment option in irradiated head and neck cancer patients with diminished oral function and good long-term cancer prognosis.
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Affiliation(s)
- Daniel Jan Toneatti
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, University of Bern, CH-3010, Bern, Switzerland
| | - Ronny Roger Graf
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, University of Bern, CH-3010, Bern, Switzerland
| | - John-Patrik Burkhard
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, University of Bern, CH-3010, Bern, Switzerland
| | - Benoît Schaller
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, University of Bern, CH-3010, Bern, Switzerland.
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Wu P, Zhang X, Hu Y, Liu D, Song J, Xu W, Tan H, Lu R, Zheng L. Co-culture with Endothelial Progenitor Cells promotes the Osteogenesis of Bone Mesenchymal Stem Cells via the VEGF-YAP axis in high-glucose environments. Int J Med Sci 2021; 18:1628-1638. [PMID: 33746579 PMCID: PMC7976568 DOI: 10.7150/ijms.52316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Accepted: 01/11/2021] [Indexed: 11/05/2022] Open
Abstract
Patients with type 2 diabetes mellitus (T2DM) have a high risk of fracture and experience poor bone healing. In recent years, bone mesenchymal stem cells (BMSCs) and endothelial progenitor cells (EPCs) have become the most commonly used cells in cell therapy and tissue engineering. In this study, we found that high glucose levels had a negative effect on the differentiation of BMSCs and EPCs. Considering that EPCs-BMSCs sheets can provide endothelial cells and osteoblastic cells, we transplanted cell sheets into T2DM rats with bilateral skull defects. The outcomes of the in vivo study revealed that EPCs-BMSCs sheets promoted ossification, which was verified by micro-CT and immunohistochemistry (IHC) analyses. Furthermore, we detected the VEGF content in the culture supernatant using an enzyme-linked immunosorbent assay (ELISA). The results showed that the BMSCs co-cultured with EPCs presented a higher level of VEGF than other cells. To assess the differentiation and migration of BMSCs exposed to VEGF, ALP staining, scratch assay and qRT-PCR analysis were performed. In addition, we used immunofluorescence and western blotting analysis to further explore the related mechanisms. The results showed that cells cultured with VEGF had a stronger actin cytoskeleton and a greater amount of nuclear and total YAP than cells cultured without VEGF. Taken together, our results indicate that co-culture with EPCs could promote the osteogenesis of BMSCs partially via VEGF. Furthermore, YAP and F-actin play important roles in this process.
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Affiliation(s)
- Peilian Wu
- The Affiliated Stomatology Hospital, Chongqing Medical University, Chongqing, 401147, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Xia Zhang
- The Affiliated Stomatology Hospital, Chongqing Medical University, Chongqing, 401147, China
- West china dental hospital of Chongqing, Chongqing, 401147, China
| | - Yun Hu
- The Affiliated Stomatology Hospital, Chongqing Medical University, Chongqing, 401147, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Dongrong Liu
- The Affiliated Stomatology Hospital, Chongqing Medical University, Chongqing, 401147, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Jinlin Song
- The Affiliated Stomatology Hospital, Chongqing Medical University, Chongqing, 401147, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Wenjie Xu
- The Affiliated Stomatology Hospital, Chongqing Medical University, Chongqing, 401147, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Hao Tan
- The Affiliated Stomatology Hospital, Chongqing Medical University, Chongqing, 401147, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Rui Lu
- The Affiliated Stomatology Hospital, Chongqing Medical University, Chongqing, 401147, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Leilei Zheng
- The Affiliated Stomatology Hospital, Chongqing Medical University, Chongqing, 401147, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
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Jiang Z, Zhu D, Yu K, Xi Y, Wang X, Yang G. Recent advances in light-induced cell sheet technology. Acta Biomater 2021; 119:30-41. [PMID: 33144232 DOI: 10.1016/j.actbio.2020.10.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/29/2020] [Accepted: 10/29/2020] [Indexed: 02/07/2023]
Abstract
Various stimuli have been applied to harvest complete cell sheets, including temperature, magnetic, pH, and electrical stimuli. Cell sheet technology is a convenient and efficient approach with beneficial effects for tissue regeneration and cell therapy. Lights of different wavelengths, such as ultraviolet (UV), visible light, and near infrared ray (NIR) light, were confirmed to aid in fabricating a cell sheet. Changes in the wettability, potential, or water content of the culturing surfaces that occur under light illumination induce conformational changes in the adhesive proteins or collagens, which then leads to cell sheet detachment. However, the current approaches face several limitations, as few standards for safe light illumination have been proposed to date, and require a careful control of the wavelength, power, and irradiation time. Future studies should aim at generating new materials for culturing and releasing cell sheets rapidly and effectively.
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9
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Feng Y, Jiang Z, Zhang Y, Miao X, Yu Q, Xie Z, Yang G. Stem-cell-derived ECM sheet-implant complexes for enhancing osseointegration. Biomater Sci 2020; 8:6647-6656. [PMID: 33074268 DOI: 10.1039/d0bm00980f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Numerous treatment methods have been developed to modify the surface of dental implants to improve cell migration and proliferation, removal torque, and osseointegration. Recent studies have constructed cell sheet-implant complexes with enhanced osteogenic capabilities. However, these complexes have some limitations, such as requirements for complex preparation processes, cell vitality maintenance, strict preservation conditions, and the induction of immunogenicity. Extracellular matrix (ECM) sheets without cells may be a more desirable material. To date, the effect of ECM sheets on implant osseointegration has not been reported. In this study, we fabricated ECM sheet-implant complexes through the combination of rat bone marrow mesenchymal stem cell (BMSC)-derived ECM sheets with sandblasted, large-grit, acid-etched (SLA) implants. These complexes were characterized by light microscopy, scanning electron microscopy (SEM), and immunofluorescence (IF) assays. The adhesion, proliferation, and osteogenic differentiation of BMSCs cultured on ECM sheets were detected in vitro. Then, the ECM sheet-implant complexes were transplanted into the metaphysis of the tibias of rats to evaluate the implant osseointegration in vivo. The results showed that ECM sheets were successfully constructed and showed significantly improved adhesion and proliferation. BMSCs cultured on ECM sheets upregulated the expression levels of the osteogenic-related genes alkaline phosphatase (ALP), bone morphogenetic protein 2 (BMP2), and runt-related transcription factor 2 (Runx2) compared to controls. In vivo, ECM sheet-implant complexes demonstrated superior new bone formation. Our findings proved that the BMSC-derived ECM sheets promoted osseointegration in vitro and in vivo. The current study indicated that the ECM sheet could be an ideal tissue engineering material, and ECM sheet-implant complexes could provide a strategy with low immunogenicity and easy storage and transportation. This research provides a novel strategy for the development of implant surface modification approaches.
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Affiliation(s)
- Yuting Feng
- Department of Implantology, Affiliated Hospital of Stomatology, Medical College, Zhejiang University, No. 395, Yan'an Road, Xia-Cheng Region, Hangzhou, Zhejiang 310006, China.
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10
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Abstract
Vascularization is a major hurdle in complex tissue and organ engineering. Tissues greater than 200 μm in diameter cannot rely on simple diffusion to obtain nutrients and remove waste. Therefore, an integrated vascular network is required for clinical translation of engineered tissues. Microvessels have been described as <150 μm in diameter, but clinically they are defined as <1 mm. With new advances in super microsurgery, vessels less than 1 mm can be anastomosed to the recipient circulation. However, this technical advancement still relies on the creation of a stable engineered microcirculation that is amenable to surgical manipulation and is readily perfusable. Microvascular engineering lays on the crossroads of microfabrication, microfluidics, and tissue engineering strategies that utilize various cellular constituents. Early research focused on vascularization by co-culture and cellular interactions, with the addition of angiogenic growth factors to promote vascular growth. Since then, multiple strategies have been utilized taking advantage of innovations in additive manufacturing, biomaterials, and cell biology. However, the anatomy and dynamics of native blood vessels has not been consistently replicated. Inconsistent results can be partially attributed to cell sourcing which remains an enigma for microvascular engineering. Variations of endothelial cells, endothelial progenitor cells, and stem cells have all been used for microvascular network fabrication along with various mural cells. As each source offers advantages and disadvantages, there continues to be a lack of consensus. Furthermore, discord may be attributed to incomplete understanding about cell isolation and characterization without considering the microvascular architecture of the desired tissue/organ.
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11
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Li Q, Yu T, Wang F, Liu X, Wang Z. Endothelial progenitor cells with stem cells enhance osteogenic efficacy. Am J Transl Res 2020; 12:2409-2424. [PMID: 32655780 PMCID: PMC7344071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 05/18/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Mesenchymal stem cell (MSC)-based bone tissue engineering is a promising treatment option for maxillary sinus augmentation. Rapid vascularization is necessary to enhance the osteoinductive efficacy and prevent necrosis of the tissue-engineered bone. This study investigated whether the co-autotransplantation of endothelial progenitor cells (EPCs) could significantly enhance the in vivo osteogenic efficacy of MSCs and prevent necrosis of the tissue-engineered bone in a maxillary sinus augmentation model in dogs. METHODS We evaluated the in vitro osteogenic activities of a clinically-used scaffold-deproteinized bovine bone (Bio-Oss) by examining cell adhesion and alkaline phosphatase (ALP) activity. In vivo, sinus augmentations were performed identically on both sides of dogs (n = 3 per group) using three treatment groups: (A) Bio-Oss with MSCs and EPCs; (B) Bio-Oss with MSCs; and (C) Bio-Oss with EPCs. The tissue implants were evaluated 24 weeks post-implantation. RESULTS In vitro, co-application of EPCs and MSCs on Bio-Oss significantly enhanced adhesion and ALP activity. In vivo, co-autotransplantation of MSCs and EPCs resulted in a significantly higher height, compressive strength, bone volume density, trabecular thickness, and trabecular number and a significantly lower trabecular separation compared with the other groups. The fluorescent test showed co-autotransplantation caused a significantly higher mineral apposition rate than the other groups. Histomorphometric analysis showed co-application resulted in the highest rate of new bone formation. Newly formed bone was frequently in the center of the implants with EPCs and MSCs, but not the other implants. CONCLUSIONS Co-autotransplantation of EPCs and MSCs significantly enhanced the in vivo osteogenic efficacy, suggesting promising potential for sinus augmentation.
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Affiliation(s)
- Qiong Li
- Department of Oral Implantology, School & Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and RegenerationShanghai 200072, China
| | - Tao Yu
- Department of Orthopedic Surgery, Tongji Hospital, Tongji University School of MedicineShanghai 200065, China
| | - Fang Wang
- Department of Oral Implantology, School & Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and RegenerationShanghai 200072, China
| | - Xin Liu
- Department of Oral Implantology, School & Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and RegenerationShanghai 200072, China
| | - Zuolin Wang
- Department of Oral Implantology, School & Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and RegenerationShanghai 200072, China
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VEGF/VEGF-R/RUNX2 Upregulation in Human Periodontal Ligament Stem Cells Seeded on Dual Acid Etched Titanium Disk. MATERIALS 2020; 13:ma13030706. [PMID: 32033260 PMCID: PMC7040902 DOI: 10.3390/ma13030706] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 01/31/2020] [Accepted: 02/04/2020] [Indexed: 12/12/2022]
Abstract
In restorative dentistry, the main implants characteristic is the ability to promote the osseointegration process as the result of interaction between angiogenesis and osteogenesis events. On the other hand, implants cytocompatibility remains a necessary feature for the success of surgery. The purpose of the current study was to investigate the interaction between human periodontal stem cells and two different types of titanium surfaces, to verify their cytocompatibility and cell adhesion ability, and to detect osteogenic and angiogenic markers, trough cell viability assay (MTT), Confocal Laser Scanning Microscopy (CLSM), scanning electron microscopy (SEM), and gene expression (RT-PCR). The titanium surfaces, machined (CTRL) and dual acid etched (TEST), tested in culture with human periodontal ligament stem cells (hPDLSCs), were previously treated in two different ways, in order to evaluate the effects of CTRL and TEST and define the best implant surface. Furthermore, the average surface roughness (Ra) of both titanium surfaces, CTRL and TEST, has been assessed through atomic force microscopy (AFM). The vascular endothelial growth factor (VEGF) and Runt-related transcription factor 2 (RUNX2) expressions have been analyzed by RT-PCR, WB analysis, and confocal laser scanning microscopy. Data evidenced that the different morphology and topography of the TEST disk increased cell growth, cell adhesion, improved osteogenic and angiogenic events, as well osseointegration process. For this reason, the TEST surface was more biocompatible than the CTRL disk surface.
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Xiang H, Chen R, Wu S, Xi D, Long S, Shen Y, Fan Z, Ren L. [Construction of three-dimensional dermoid tissue based on cell sheets technology in vitro]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2020; 34:116-123. [PMID: 31939246 PMCID: PMC8171817 DOI: 10.7507/1002-1892.201904039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 11/05/2019] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To explore a new strategy for constructing three-dimensional dermoid tissue in vitro by using cell sheets technology. METHODS Rabbit bone marrow mesenchymal stem cells (rBMSCs) were isolated from bone marrow of New Zealand white rabbits and cultured by whole bone marrow adherent method. Human dermal fibroblasts (HDFs) were cultured and passaged in vitro. The 2nd generation rBMSCs and the 3rd generation HDFs were cultured in a culture dish for 2 weeks with cell sheets conditioned medium respectively to obtain a monolayer cell sheets. Human umbilical vein endothelial cells (HUVECs) were inoculated on rBMSCs sheet to construct pre-vascularized cell sheet. During the culture period, the morphological changes of the cell sheet were observed under an inverted phase contrast microscope. At 1, 3, 7, and 14 days, HE staining and CD31 immunofluorescence staining were performed to observe the cell distribution and microvascular network formation. The rBMSCs sheet was used as control. The pre-vascularized cell sheet (experimental group) and rBMSCs sheet (control group) cultured for 7 days were placed in the middle of two HDFs sheets, respectively, to prepare three-dimensional dermoid tissues. After 24 hours of culture, CD31 immunofluorescence staining and collagen type Ⅰ and collagen type Ⅲ immunohistochemical stainings were performed to evaluate cell distribution and collagen expression. RESULTS HDFs and rBMSCs sheets were successfully prepared after 2 weeks of cell culture. After inoculation of HUVECs on rBMSCs sheet for 3 days, HUVECs could be seen to rearrange on rBMSCs sheet and forming vacuoles. The reticular structure was visible at 7 days and more obvious at 14 days. The formation of vacuoles between the cell sheets was observed by HE staining, and the vacuoles became more and more obvious, the thickness of the membranes increased significantly with time. CD31 immunofluorescence staining showed the microvascular lumen formation. However, only the thickness of rBMSCs sheet increasing was observed, with no changes in cell morphology or cavitation structure. The three-dimensional dermoid tissue observation showed that the endothelial cells in the experimental group were positive expressions, and the rBMSCs, HDFs, and HUVECs cells were arranged neatly. The endothelial cells were negative expressions and randomly arranged in the control group. The collagen type Ⅰ and collagen type Ⅲ were positive expression in the experimental group and the control group. But compared with control group, experimental group presented a "honeycomb" network connection, where the matrix was distributed regularly, and cells were arranged tightly. The difference in the expression of collagen type Ⅰ and collagen type Ⅲ between the experimental group and the control group was not significant ( P>0.05). CONCLUSION Three-dimensional dermoid tissue is successfully constructed by using cell sheet technology. The cell matrix distribution of the pre-vascularized cell sheet constructed by HUVECs and rBMSCs sheet is relatively regular, which has the potential to form tissue engineered dermis.
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Affiliation(s)
- Hua Xiang
- School of Stomatology, Lanzhou University, Lanzhou Gansu, 730000, P.R.China
| | - Rui Chen
- School of Stomatology, Lanzhou University, Lanzhou Gansu, 730000, P.R.China
| | - Shan Wu
- School of Stomatology, Lanzhou University, Lanzhou Gansu, 730000, P.R.China
| | - Dali Xi
- Department of Pathology, the First Affiliated Hospital of Lanzhou University, Lanzhou Gansu, 730000, P.R.China
| | - Siqi Long
- School of Stomatology, Lanzhou University, Lanzhou Gansu, 730000, P.R.China
| | - Yuan Shen
- School of Stomatology, Lanzhou University, Lanzhou Gansu, 730000, P.R.China
| | - Zengjie Fan
- School of Stomatology, Lanzhou University, Lanzhou Gansu, 730000, P.R.China
| | - Liling Ren
- School of Stomatology, Lanzhou University, Lanzhou Gansu, 730000,
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Liu H, Dong Y, Feng X, Li L, Jiao Y, Bai S, Feng Z, Yu H, Li X, Zhao Y. miR-34a promotes bone regeneration in irradiated bone defects by enhancing osteoblastic differentiation of mesenchymal stromal cells in rats. Stem Cell Res Ther 2019; 10:180. [PMID: 31215466 PMCID: PMC6582588 DOI: 10.1186/s13287-019-1285-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 04/22/2019] [Accepted: 05/30/2019] [Indexed: 12/11/2022] Open
Abstract
Background Radiation exposure negatively affects the regenerative ability and makes reconstruction of bone defects after tumor section difficult. miR-34a is involved in radiation biology and bone metabolism. The aim of this study was to investigate whether miR-34a could contribute to bone regeneration in irradiated bone defects. Methods The expression of miR-34a was analyzed during the osteoblastic differentiation of irradiated BMSCs and bone formation in irradiated bone defects. miR-34a mimics and miR-34a inhibitor were used to upregulate or suppress the expression of miR-34a in BMSCs irradiated with 2 or 4 Gy X-ray radiation. In vitro osteogenesis and subcutaneous osteogenesis were used to assess the effects of miR-34a on the osteogenic ability of radiation-impaired BMSCs. Collagen-based hydrogel containing agomiR-34a or antagomiR-34a were placed into the 3-mm defects of irradiated rat tibias to test the effect of miR-34a on bone defect healing after irradiation. Results miR-34a was upregulated in the process of bone formation after irradiation. Transfecting radiation-impaired BMSCs with miR-34a mimics enhanced their osteoblastic differentiation in vitro by targeting NOTCH1. Overexpression of miR-34a enhanced the ectopic bone formation of irradiated BMSCs. In situ delivery of miR-34a promoted bone regeneration in irradiated bone defects. Conclusions miR-34a promoted the osteoblastic differentiation of BMSCs and enhanced the ectopic bone formation after irradiation. miR-34a promoted bone defect healing in irradiated rat tibias. miR-34a-targeted therapy might be a promising strategy for promoting the reconstruction of bone defects after radiotherapy. Electronic supplementary material The online version of this article (10.1186/s13287-019-1285-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Huan Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, No. 145 West Changle Road, Xi'an, 710032, China
| | - Yan Dong
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, No. 145 West Changle Road, Xi'an, 710032, China
| | - Xiaoke Feng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, No. 145 West Changle Road, Xi'an, 710032, China
| | - Liya Li
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, No. 169 West Changle Road, Xi'an, 710032, China
| | - Yang Jiao
- Department of Stomatology, The 7th Medical Center of PLA General Hospital, NO.5, Nanmencang, Dongsishitiao Street, Beijing, 100700, China
| | - Shizhu Bai
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, No. 145 West Changle Road, Xi'an, 710032, China
| | - Zhihong Feng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, No. 145 West Changle Road, Xi'an, 710032, China
| | - Hao Yu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, No. 145 West Changle Road, Xi'an, 710032, China
| | - Xuejian Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, No. 145 West Changle Road, Xi'an, 710032, China
| | - Yimin Zhao
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, No. 145 West Changle Road, Xi'an, 710032, China.
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15
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Liu H, Jiao Y, Zhou W, Bai S, Feng Z, Dong Y, Liu Q, Feng X, Zhao Y. Endothelial progenitor cells improve the therapeutic effect of mesenchymal stem cell sheets on irradiated bone defect repair in a rat model. J Transl Med 2018; 16:137. [PMID: 29788957 PMCID: PMC5964689 DOI: 10.1186/s12967-018-1517-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 05/16/2018] [Indexed: 12/19/2022] Open
Abstract
Background The reconstruction of bone defects is often impaired by radiotherapy since bone quality is compromised by radiation. This study aims to investigate the therapeutic efficacy of the composite cell sheets-bone marrow mesenchymal stem cell (BMSC) sheets cocultured with endothelial progenitor cells (EPCs)-in the healing of irradiated bone defects and the biological effects of EPCs on the osteogenic properties of BMSC sheets. Methods BMSCs and EPCs were isolated from rat bone marrow. BMSCs were used to form cell sheets by the vitamin C inducing method. EPCs were seeded on BMSC sheets to make EPCs–BMSC sheets. Osteogenesis of EPCs–BMSC sheets and BMSC sheets were tested. In vitro osteogenesis tests included ALP, Alizarin Red S, Sirius Red staining, qRT-PCR and Western blot analysis after 3 and 7 days of osteogenic incubation. Subcutaneous osteogenesis was tested by H&E staining and immunohistochemical staining 8 weeks after transplantation. EPCs–BMSC sheets and BMSC sheets were used in the 3 mm defects of non-irradiated and irradiated rat tibias. Micro-CT and histological analysis were used to test the healing of bone defects 4 and 8 weeks after transplantation. Results EPCs–BMSC sheets showed enhanced osteogenic differentiation in vitro with increased expression of osteoblastic markers and osteogenesis related staining compared with BMSC sheets. In subcutaneous osteogenesis test, EPCs–BMSC sheets formed larger areas of new bone and blood vessels. The EPCs–BMSC group had the highest volume of newly formed bone in the defect area of irradiated tibias. Conclusions EPCs improved the osteogenic differentiation of BMSC Sheets and enhanced the ectopic bone formation. EPCs–BMSC sheets promoted bone healing in irradiated rat tibias. EPCs–BMSC sheets are potentially useful in the reconstruction of bone defect after radiotherapy. Electronic supplementary material The online version of this article (10.1186/s12967-018-1517-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Huan Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Yang Jiao
- Department of Stomatology, PLA Army General Hospital, Beijing, 100700, China
| | - Wei Zhou
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Shizhu Bai
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Zhihong Feng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Yan Dong
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Qian Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Xiaoke Feng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Yimin Zhao
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China.
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Koo MA, Lee MH, Kwon BJ, Seon GM, Kim MS, Kim D, Nam KC, Park JC. Exogenous ROS-induced cell sheet transfer based on hematoporphyrin-polyketone film via a one-step process. Biomaterials 2018; 161:47-56. [DOI: 10.1016/j.biomaterials.2018.01.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 01/15/2018] [Accepted: 01/19/2018] [Indexed: 12/14/2022]
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17
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Kawecki F, Clafshenkel WP, Fortin M, Auger FA, Fradette J. Biomimetic Tissue-Engineered Bone Substitutes for Maxillofacial and Craniofacial Repair: The Potential of Cell Sheet Technologies. Adv Healthc Mater 2018; 7:e1700919. [PMID: 29280323 DOI: 10.1002/adhm.201700919] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 10/02/2017] [Indexed: 12/21/2022]
Abstract
Maxillofacial defects are complex lesions stemming from various etiologies: accidental, congenital, pathological, or surgical. A bone graft may be required when the normal regenerative capacity of the bone is exceeded or insufficient. Surgeons have many options available for bone grafting including the "gold standard" autologous bone graft. However, this approach is not without drawbacks such as the morbidity associated with harvesting bone from a donor site, pain, infection, or a poor quantity and quality of bone in some patient populations. This review discusses the various bone graft substitutes used for maxillofacial and craniofacial repair: allografts, xenografts, synthetic biomaterials, and tissue-engineered substitutes. A brief overview of bone tissue engineering evolution including the use of mesenchymal stem cells is exposed, highlighting the first clinical applications of adipose-derived stem/stromal cells in craniofacial reconstruction. The importance of prevascularization strategies for bone tissue engineering is also discussed, with an emphasis on recent work describing substitutes produced using cell sheet-based technologies, including the use of thermo-responsive plates and the self-assembly approach of tissue engineering. Indeed, considering their entirely cell-based design, these natural bone-like substitutes have the potential to closely mimic the osteogenicity, osteoconductivity, osteoinduction, and osseointegration properties of autogenous bone for maxillofacial and craniofacial reconstruction.
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Affiliation(s)
- Fabien Kawecki
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX Division of Regenerative Medicine CHU de Québec Research Center‐Université Laval Québec QC G1J 1Z4 Canada
- Department of Surgery Faculty of Medicine Université Laval Québec QC G1V 0A6 Canada
| | - William P. Clafshenkel
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX Division of Regenerative Medicine CHU de Québec Research Center‐Université Laval Québec QC G1J 1Z4 Canada
- Department of Surgery Faculty of Medicine Université Laval Québec QC G1V 0A6 Canada
| | - Michel Fortin
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX Division of Regenerative Medicine CHU de Québec Research Center‐Université Laval Québec QC G1J 1Z4 Canada
- Department of Oral and Maxillofacial Surgery Faculty of Dentistry Université Laval Québec QC G1V 0A6 Canada
| | - François A. Auger
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX Division of Regenerative Medicine CHU de Québec Research Center‐Université Laval Québec QC G1J 1Z4 Canada
- Department of Surgery Faculty of Medicine Université Laval Québec QC G1V 0A6 Canada
| | - Julie Fradette
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX Division of Regenerative Medicine CHU de Québec Research Center‐Université Laval Québec QC G1J 1Z4 Canada
- Department of Surgery Faculty of Medicine Université Laval Québec QC G1V 0A6 Canada
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Herrmann M, Zeiter S, Eberli U, Hildebrand M, Camenisch K, Menzel U, Alini M, Verrier S, Stadelmann VA. Five Days Granulocyte Colony-Stimulating Factor Treatment Increases Bone Formation and Reduces Gap Size of a Rat Segmental Bone Defect: A Pilot Study. Front Bioeng Biotechnol 2018; 6:5. [PMID: 29484293 PMCID: PMC5816045 DOI: 10.3389/fbioe.2018.00005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 01/15/2018] [Indexed: 12/25/2022] Open
Abstract
Bone is an organ with high natural regenerative capacity and most fractures heal spontaneously when appropriate fracture fixation is provided. However, additional treatment is required for patients with large segmental defects exceeding the endogenous healing potential and for patients suffering from fracture non-unions. These cases are often associated with insufficient vascularization. Transplantation of CD34+ endothelial progenitor cells (EPCs) has been successfully applied to promote neovascularization of bone defects, however including extensive ex vivo manipulation of cells. Here, we hypothesized, that treatment with granulocyte colony-stimulating factor (G-CSF) may improve bone healing by mobilization of CD34+ progenitor cells into the circulation, which in turn may facilitate vascularization at the defect site. In this pilot study, we aimed to characterize the different cell populations mobilized by G-CSF and investigate the influence of cell mobilization on the healing of a critical size femoral defect in rats. Cell mobilization was investigated by flow cytometry at different time points after five consecutive daily G-CSF injections. In a pilot study, bone healing of a 4.5-mm critical femoral defect in F344 rats was compared between a saline-treated control group and a G-CSF treatment group. In vivo microcomputed tomography and histology were applied to compare bone formation in both treatment groups. Our data revealed that leukocyte counts show a peak increase at the first day after the last G-CSF injection. In addition, we found that CD34+ progenitor cells, including EPCs, were significantly enriched at day 1, and further increased at day 5 and day 11. Upregulation of monocytes, granulocytes and macrophages peaked at day 1. G-CSF treatment significantly increased bone volume and bone density in the defect, which was confirmed by histology. Our data show that different cell populations are mobilized by G-CSF treatment in cell specific patterns. Although in this pilot study no bridging of the critical defect was observed, significantly improved bone formation by G-CSF treatment was clearly shown.
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Affiliation(s)
| | | | | | | | | | | | - Mauro Alini
- AO Research Institute Davos, Davos, Switzerland
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19
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Yang Z, He C, He J, Chu J, Liu H, Deng X. Curcumin-mediated bone marrow mesenchymal stem cell sheets create a favorable immune microenvironment for adult full-thickness cutaneous wound healing. Stem Cell Res Ther 2018; 9:21. [PMID: 29386050 PMCID: PMC5793416 DOI: 10.1186/s13287-018-0768-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 12/13/2017] [Accepted: 01/02/2018] [Indexed: 02/06/2023] Open
Abstract
Background Adult full-thickness cutaneous wound repair suffers from an imbalanced immune response, leading to nonfunctional reconstructed tissue and fibrosis. Although various treatments have been reported, the immune-mediated tissue regeneration driven by biomaterial offers an attractive regenerative strategy for damaged tissue repair. Methods In this research, we investigated a specific bone marrow-derived mesenchymal stem cell (BMSC) sheet that was induced by the Traditional Chinese Medicine curcumin (CS-C) and its immunomodulatory effects on wound repair. Comparisons were made with the BMSC sheet induced without curcumin (CS-N) and control (saline). Results In vitro cultured BMSC sheets (CS-C) showed that curcumin promoted the proliferation of BMSCs and modified the features of produced extracellular matrix (ECM) secreted by BMSCs, especially the contents of ECM structural proteins such as fibronectin (FN) and collagen I and III, as well as the ratio of collagen III/I. Two-photon fluorescence (TPF) and second-harmonic generation (SHG) imaging of mouse implantation revealed superior engraftment of BMSCs, maintained for 35 days in the CS-C group. Most importantly, CS-C created a favorable immune microenvironment. The chemokine stromal cell-derived factor 1 (SDF1) was abundantly produced by CS-C, thus facilitating a mass migration of leukocytes from which significantly increased expression of signature TH1 cells (interferon gamma) and M1 macrophages (tumor necrosis factor alpha) genes were confirmed at 7 days post-operation. The number of TH1 cells and associated pro-inflammatory M1 macrophages subsequently decreased sharply after 14 days post-operation, suggesting a rapid type I immune regression. Furthermore, the CS-C group showed an increased trend towards M2 macrophage polarization in the early phase. CS-C led to an epidermal thickness and collagen deposition that was closer to that of normal skin. Conclusions Curcumin has a good regulatory effect on BMSCs and this promising CS-C biomaterial creates a pro-regenerative immune microenvironment for cutaneous wound healing.
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Affiliation(s)
- Zhi Yang
- MOE Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, No. 55 Zhongshan Avenue West, Tianhe District, Guangzhou, 510631, China
| | - Chengmin He
- MOE Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, No. 55 Zhongshan Avenue West, Tianhe District, Guangzhou, 510631, China
| | - Jinyang He
- Tropical Medicine Institute, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jing Chu
- MOE Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, No. 55 Zhongshan Avenue West, Tianhe District, Guangzhou, 510631, China
| | - Hanping Liu
- MOE Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, No. 55 Zhongshan Avenue West, Tianhe District, Guangzhou, 510631, China.
| | - Xiaoyuan Deng
- MOE Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, No. 55 Zhongshan Avenue West, Tianhe District, Guangzhou, 510631, China.
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Zhou C, Xu AT, Wang DD, Lin GF, Liu T, He FM. The effects of Sr-incorporated micro/nano rough titanium surface on rBMSC migration and osteogenic differentiation for rapid osteointegration. Biomater Sci 2018; 6:1946-1961. [DOI: 10.1039/c8bm00473k] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
MNT-Sr can promote rBMSC osteogenic differentiation and significantly enhance rBMSC migration and homing via activation of SDF-1α/CXCR4 signaling.
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Affiliation(s)
- Chuan Zhou
- Department of Oral Implantology and Prothodontics
- The Affiliated Stomatology Hospital
- School of Medicine
- Zhejiang University
- Hangzhou 310006
| | - An-tian Xu
- Department of Oral Implantology and Prothodontics
- The Affiliated Stomatology Hospital
- School of Medicine
- Zhejiang University
- Hangzhou 310006
| | - Dan-dan Wang
- Department of Oral Implantology and Prothodontics
- The Affiliated Stomatology Hospital
- School of Medicine
- Zhejiang University
- Hangzhou 310006
| | - Guo-fen Lin
- Department of General Dentistry
- The Affiliated Stomatology Hospital
- School of Medicine
- Zhejiang University
- Hangzhou 310006
| | - Tie Liu
- Department of Oral Implantology
- The Affiliated Stomatology Hospital
- School of Medicine
- Zhejiang University
- Hangzhou 310006
| | - Fu-ming He
- Department of Oral Implantology and Prothodontics
- The Affiliated Stomatology Hospital
- School of Medicine
- Zhejiang University
- Hangzhou 310006
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