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Mahmoudi N, Roque M, Paiva Dos Santos B, Oliveira H, Siadous R, Rey S, Garanger E, Lecommandoux S, Catros S, Garbay B, Amédée Vilamitjana J. An Elastin-Derived Composite Matrix for Enhanced Vascularized and Innervated Bone Tissue Reconstruction: From Material Development to Preclinical Evaluation. Adv Healthc Mater 2024; 13:e2303765. [PMID: 38651610 DOI: 10.1002/adhm.202303765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 03/28/2024] [Indexed: 04/25/2024]
Abstract
Despite progress in bone tissue engineering, reconstruction of large bone defects remains an important clinical challenge. Here, a biomaterial designed to recruit bone cells, endothelial cells, and neuronal fibers within the same matrix is developed, enabling bone tissue regeneration. The bioactive matrix is based on modified elastin-like polypeptides (ELPs) grafted with laminin-derived adhesion peptides IKVAV and YIGSR, and the SNA15 peptide for retention of hydroxyapatite (HA) particles. The composite matrix shows suitable porosity, interconnectivity, biocompatibility for endothelial cells, and the ability to support neurites outgrowth by sensory neurons. Subcutaneous implantation leads to the formation of osteoid tissue, characterized by the presence of bone cells, vascular networks, and neuronal structures, while minimizing inflammation. Using a rat femoral condyle defect model, longitudinal micro-CT analysis is performed, which demonstrates a significant increase in the volume of mineralized tissue when using the ELP-based matrix compared to empty defects and a commercially available control (Collapat). Furthermore, visible blood vessel networks and nerve fibers are observed within the lesions after a period of two weeks. By incorporating multiple key components that support cell growth, mineralization, and tissue integration, this ELP-based composite matrix provides a holistic and versatile solution to enhance bone tissue regeneration.
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Affiliation(s)
- Nadia Mahmoudi
- Tissue Bioengineering Laboratory (BioTis), Inserm U1026, University of Bordeaux, Bordeaux, France
| | - Micaela Roque
- Tissue Bioengineering Laboratory (BioTis), Inserm U1026, University of Bordeaux, Bordeaux, France
| | - Bruno Paiva Dos Santos
- Tissue Bioengineering Laboratory (BioTis), Inserm U1026, University of Bordeaux, Bordeaux, France
| | - Hugo Oliveira
- Tissue Bioengineering Laboratory (BioTis), Inserm U1026, University of Bordeaux, Bordeaux, France
| | - Robin Siadous
- Tissue Bioengineering Laboratory (BioTis), Inserm U1026, University of Bordeaux, Bordeaux, France
| | - Sylvie Rey
- Tissue Bioengineering Laboratory (BioTis), Inserm U1026, University of Bordeaux, Bordeaux, France
| | | | | | - Sylvain Catros
- CHU Bordeaux, Dentistry and Oral Health Department, Bordeaux, 33076, France
| | - Bertrand Garbay
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR, Pessac, 5629, France
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Quizon MJ, Deppen JN, Barber GF, Kalelkar PP, Coronel MM, Levit RD, García AJ. VEGF-delivering PEG hydrogels promote vascularization in the porcine subcutaneous space. J Biomed Mater Res A 2024; 112:866-880. [PMID: 38189109 PMCID: PMC10984793 DOI: 10.1002/jbm.a.37666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/21/2023] [Accepted: 12/24/2023] [Indexed: 01/09/2024]
Abstract
For cell therapies, the subcutaneous space is an attractive transplant site due to its large surface area and accessibility for implantation, monitoring, biopsy, and retrieval. However, its poor vascularization has catalyzed research to induce blood vessel formation within the site to enhance cell revascularization and survival. Most studies focus on the subcutaneous space of rodents, which does not recapitulate important anatomical features and vascularization responses of humans. Herein, we evaluate biomaterial-driven vascularization in the porcine subcutaneous space. Additionally, we report the first use of cost-effective fluorescent microspheres to quantify perfusion in the porcine subcutaneous space. We investigate the vascularization-inducing efficacy of vascular endothelial growth factor (VEGF)-delivering synthetic hydrogels based on 4-arm poly(ethylene) glycol macromers with terminal maleimides (PEG-4MAL). We compare three groups: a non-degradable hydrogel with a VEGF-releasing PEG-4MAL gel coating (Core+VEGF gel); an uncoated, non-degradable hydrogel (Core-only); and naïve tissue. After 2 weeks, Core+VEGF gel has significantly higher tissue perfusion, blood vessel area, blood vessel density, and number of vessels compared to both Core-only and naïve tissue. Furthermore, healthy vital signs during surgery and post-procedure metrics demonstrate the safety of hydrogel delivery. We demonstrate that VEGF-delivering synthetic hydrogels induce robust vascularization and perfusion in the porcine subcutaneous space.
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Affiliation(s)
- Michelle J. Quizon
- Woodruff School of Mechanical Engineering and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, GA 30332, USA
| | - Juline N. Deppen
- Division of Cardiology, Emory University School of Medicine, 1440 Clifton Rd, Atlanta, GA 30322, USA
| | - Graham F. Barber
- Woodruff School of Mechanical Engineering and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, GA 30332, USA
| | - Pranav P. Kalelkar
- Woodruff School of Mechanical Engineering and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, GA 30332, USA
| | - María M. Coronel
- Woodruff School of Mechanical Engineering and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, GA 30332, USA
| | - Rebecca D. Levit
- Division of Cardiology, Emory University School of Medicine, 1440 Clifton Rd, Atlanta, GA 30322, USA
| | - Andrés J. García
- Woodruff School of Mechanical Engineering and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, GA 30332, USA
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Quek J, Vizetto-Duarte C, Teoh SH, Choo Y. Towards Stem Cell Therapy for Critical-Sized Segmental Bone Defects: Current Trends and Challenges on the Path to Clinical Translation. J Funct Biomater 2024; 15:145. [PMID: 38921519 PMCID: PMC11205181 DOI: 10.3390/jfb15060145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 05/18/2024] [Accepted: 05/24/2024] [Indexed: 06/27/2024] Open
Abstract
The management and reconstruction of critical-sized segmental bone defects remain a major clinical challenge for orthopaedic clinicians and surgeons. In particular, regenerative medicine approaches that involve incorporating stem cells within tissue engineering scaffolds have great promise for fracture management. This narrative review focuses on the primary components of bone tissue engineering-stem cells, scaffolds, the microenvironment, and vascularisation-addressing current advances and translational and regulatory challenges in the current landscape of stem cell therapy for critical-sized bone defects. To comprehensively explore this research area and offer insights for future treatment options in orthopaedic surgery, we have examined the latest developments and advancements in bone tissue engineering, focusing on those of clinical relevance in recent years. Finally, we present a forward-looking perspective on using stem cells in bone tissue engineering for critical-sized segmental bone defects.
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Affiliation(s)
- Jolene Quek
- Developmental Biology and Regenerative Medicine Programme, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore; (J.Q.); (C.V.-D.)
| | - Catarina Vizetto-Duarte
- Developmental Biology and Regenerative Medicine Programme, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore; (J.Q.); (C.V.-D.)
| | - Swee Hin Teoh
- Centre for Advanced Medical Engineering, College of Materials Science and Engineering, Hunan University, Changsha 410012, China
| | - Yen Choo
- Developmental Biology and Regenerative Medicine Programme, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore; (J.Q.); (C.V.-D.)
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Park JE, Kim DH. Advanced Immunomodulatory Biomaterials for Therapeutic Applications. Adv Healthc Mater 2024:e2304496. [PMID: 38716543 DOI: 10.1002/adhm.202304496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 04/15/2024] [Indexed: 05/22/2024]
Abstract
The multifaceted biological defense system modulating complex immune responses against pathogens and foreign materials plays a critical role in tissue homeostasis and disease progression. Recently developed biomaterials that can specifically regulate immune responses, nanoparticles, graphene, and functional hydrogels have contributed to the advancement of tissue engineering as well as disease treatment. The interaction between innate and adaptive immunity, collectively determining immune responses, can be regulated by mechanobiological recognition and adaptation of immune cells to the extracellular microenvironment. Therefore, applying immunomodulation to tissue regeneration and cancer therapy involves manipulating the properties of biomaterials by tailoring their composition in the context of the immune system. This review provides a comprehensive overview of how the physicochemical attributes of biomaterials determine immune responses, focusing on the physical properties that influence innate and adaptive immunity. This review also underscores the critical aspect of biomaterial-based immune engineering for the development of novel therapeutics and emphasizes the importance of understanding the biomaterials-mediated immunological mechanisms and their role in modulating the immune system.
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Affiliation(s)
- Ji-Eun Park
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841, Republic of Korea
| | - Dong-Hwee Kim
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841, Republic of Korea
- Department of Integrative Energy Engineering, College of Engineering, Korea University, Seoul, 02841, Republic of Korea
- Biomedical Research Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
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Lakshmi Mounika K, Lanke RB, Mudaliyar MC, Khandelwal S, Gaddam B, Boyapati R. Comprehensive Evaluation of Novel Biomaterials for Dental Implant Surfaces: An In Vitro Comparative Study. Cureus 2024; 16:e61175. [PMID: 38933613 PMCID: PMC11200310 DOI: 10.7759/cureus.61175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Accepted: 05/25/2024] [Indexed: 06/28/2024] Open
Abstract
BACKGROUND Dental implantology is continually evolving in its quest to discover new biomaterials to improve dental implant success rates. The study explored the potential of innovative biomaterials for dental implant surfaces, including titanium-zirconium (Ti-Zr) alloy, hydroxyapatite-coated titanium (HA-Ti), and porous polyetheretherketone (PEEK), in comparison to conventional commercially pure titanium (CP Ti). MATERIALS AND METHODS A total of 186 samples were harvested for the analysis. Biomaterials were thoroughly evaluated in terms of surface topography, chemical composition, biocompatibility, mechanical properties, osseointegration performance, and bacterial adhesion. Study methods and techniques included scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), cell culture variants, tensile tests, hardness measurements, histological analysis, and microbiological testing. RESULTS Surface topography examination showed significant disparities between the biomaterials: Ti-Zr had a better roughness of 1.23 μm, while HA-Ti demonstrated a smoother surface at 0.98 μm. Chemical composition evaluation indicated the presence of a Ti-Zr alloy in Ti-Zr, calcium-phosphorus richness in HA-Ti, and high titanium amounts in CP Ti. The mechanical properties assessment showed that Ti-Zr and CP Ti had good tensile strengths of 750 MPa and 320 HV. In addition, bacterial adhesion tests showed low propensities for Ti-Zr and HA-Ti at 1200 and 800 cfu/cm2, respectively. CONCLUSION Ti-Zr and HA-Ti performed better than the other biomaterials in surface topography and mechanical properties and against bacterial adhesion. This study emphasizes that multi-parameter analysis is critical for clinical decision-making, allowing for the selection of the currently available biomaterial, which could be conducive to the long-term success of the implant.
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Affiliation(s)
- Kalluri Lakshmi Mounika
- Department of Prosthodontics and Crown and Bridge, Sibar Institute of Dental Sciences, Guntur, IND
| | | | | | - Sourabh Khandelwal
- Department of Prosthodontics and Crown and Bridge, Index Institute of Dental Sciences, Indore, IND
| | - Bhavyasri Gaddam
- Department of Periodontology, Mamata Dental College, Khammam, IND
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Shi W, Jiang Y, Wu T, Zhang Y, Li T. Advancements in drug-loaded hydrogel systems for bone defect repair. Regen Ther 2024; 25:174-185. [PMID: 38230308 PMCID: PMC10789937 DOI: 10.1016/j.reth.2023.12.010] [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: 10/13/2023] [Revised: 12/05/2023] [Accepted: 12/17/2023] [Indexed: 01/18/2024] Open
Abstract
Bone defects are primarily the result of high-energy trauma, pathological fractures, bone tumor resection, or infection debridement. The treatment of bone defects remains a huge clinical challenge. The current treatment options for bone defects include bone traction, autologous/allogeneic bone transplantation, gene therapy, and bone tissue engineering amongst others. With recent developments in the field, composite scaffolds prepared using tissue engineering techniques to repair bone defects are used more often. Among the various composite scaffolds, hydrogel exhibits the advantages of good biocompatibility, high water content, and degradability. Its three-dimensional structure is similar to that of the extracellular matrix, and as such it is possible to load stem cells, growth factors, metal ions, and small molecule drugs upon these scaffolds. Therefore, the hydrogel-loaded drug system has great potential in bone defect repair. This review summarizes the various natural and synthetic materials used in the preparation of hydrogels, in addition to the latest research status of hydrogel-loaded drug systems.
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Affiliation(s)
- Weipeng Shi
- Department of Orthopaedic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yaping Jiang
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Tingyu Wu
- Department of Orthopaedic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yingze Zhang
- Department of Orthopaedic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Tao Li
- Department of Orthopaedic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
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Andres M, Robertson E, Hall A, McBride-Gagyi S, Sell S. Controlled pore anisotropy in chitosan-gelatin cryogels for use in bone tissue engineering. J Biomater Appl 2024; 38:797-807. [PMID: 38278524 DOI: 10.1177/08853282231222324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2024]
Abstract
In tissue engineering, the development of an appropriate scaffold is crucial to provide a framework for new tissue growth. The use of cryogels as scaffolds shows promise due to their macroporous structure, but the pore size, distribution, and interconnectivity is highly variable depending on the fabrication process. The objective of the current research is to provide a technique for controlled anisotropy in chitosan-gelatin cryogels to develop scaffolds for bone tissue engineering application. A mold was developed using additive manufacturing to be used during the freezing process in order to fabricate cryogels with a more interconnected pore structure. The scaffolds were tested to evaluate their porosity, mechanical strength, and to observe cell infiltration through the cryogel. It was found that the use of the mold allowed for the creation of designated pores within the cryogel structure which facilitated cell infiltration to the center of the scaffold without sacrificing mechanical integrity of the structure.
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Affiliation(s)
- Madeline Andres
- Department of Biomedical Engineering, Saint Louis University, Saint Louis, MO, USA
| | - Eileen Robertson
- Department of Biomedical Engineering, Saint Louis University, Saint Louis, MO, USA
| | - Andrew Hall
- Department of Biomedical Engineering, Saint Louis University, Saint Louis, MO, USA
| | - Sarah McBride-Gagyi
- Department of Orthopaedic Surgery, Saint Louis University School of Medicine, Saint Louis, MO, USA
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA
| | - Scott Sell
- Department of Biomedical Engineering, Saint Louis University, Saint Louis, MO, USA
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Browne S, Petit N, Quondamatteo F. Functionalised biomaterials as synthetic extracellular matrices to promote vascularisation and healing of diabetic wounds. Cell Tissue Res 2024; 395:133-145. [PMID: 38051351 DOI: 10.1007/s00441-023-03849-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 11/24/2023] [Indexed: 12/07/2023]
Abstract
Diabetic foot ulcers (DFU) are a type of chronic wound that constitute one of the most serious and debilitating complications associated with diabetes. The lack of clinically efficacious treatments to treat these recalcitrant wounds can lead to amputations for those worst affected. Biomaterial-based approaches offer great hope in this regard, as they provide a template for cell infiltration and tissue repair. However, there is an additional need to treat the underlying pathophysiology of DFUs, in particular insufficient vascularization of the wound which significantly hampers healing. Thus, the addition of pro-angiogenic moieties to biomaterials is a promising strategy to promote the healing of DFUs and other chronic wounds. In this review, we discuss the potential of biomaterials as treatments for DFU and the approaches that can be taken to functionalise these biomaterials such that they promote vascularisation and wound healing in pre-clinical models.
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Affiliation(s)
- Shane Browne
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, 123, St Stephen's Green, Dublin 2, Dublin, Ireland.
- CÚRAM, Centre for Research in Medical Devices, University of Galway, H91 W2TY, Galway, Ireland.
- Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin 2, Ireland.
| | - Noémie Petit
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, 123, St Stephen's Green, Dublin 2, Dublin, Ireland
| | - Fabio Quondamatteo
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, 123, St Stephen's Green, Dublin 2, Dublin, Ireland.
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Chen S, Cheng D, Bao W, Ding R, Shen Z, Huang W, Lu Y, Zhang P, Sun Y, Chen H, Shen C, Wang Y. Polydopamine-Functionalized Strontium Alginate/Hydroxyapatite Composite Microhydrogel Loaded with Vascular Endothelial Growth Factor Promotes Bone Formation and Angiogenesis. ACS APPLIED MATERIALS & INTERFACES 2024; 16:4462-4477. [PMID: 38240605 DOI: 10.1021/acsami.3c16822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Critical-size bone defects are a common and intractable clinical problem that typically requires filling in with surgical implants to facilitate bone regeneration. Considering the limitations of autologous bone and allogeneic bone in clinical applications, such as secondary damage or immunogenicity, injectable microhydrogels with osteogenic and angiogenic effects have received considerable attention. Herein, polydopamine (PDA)-functionalized strontium alginate/nanohydroxyapatite (Sr-Alg/nHA) composite microhydrogels loaded with vascular endothelial growth factor (VEGF) were prepared using microfluidic technology. This composite microhydrogel released strontium ions stably for at least 42 days to promote bone formation. The PDA coating can release VEGF in a controlled manner, effectively promote angiogenesis around bone defects, and provide nutritional support for new bone formation. In in vitro experiments, the composite microhydrogels had good biocompatibility. The PDA coating greatly improves cell adhesion on the composite microhydrogel and provides good controlled release of VEGF. Therefore, this composite microhydrogel effectively promotes osteogenic differentiation and vascularization. In in vivo experiments, composite microhydrogels were injected into critical-size bone defects in the skull of rats, and they were shown by microcomputed tomography and tissue sections to be effective in promoting bone regeneration. These findings demonstrated that this novel microhydrogel effectively promotes bone formation and angiogenesis at the site of bone defects.
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Affiliation(s)
- Shi Chen
- Department of Orthopedics, The First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230032, P. R. China
| | - Dawei Cheng
- Department of Orthopedics, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, P. R. China
| | - Weimin Bao
- Key Laboratory of Oral Diseases Research of Anhui Province, College and Hospital of Stomatology, Anhui Medical University, Hefei 230032, P. R. China
| | - Ruyuan Ding
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing 210008, P. R. China
| | - Zhenguo Shen
- Key Laboratory of Oral Diseases Research of Anhui Province, College and Hospital of Stomatology, Anhui Medical University, Hefei 230032, P. R. China
| | - Wenkai Huang
- Key Laboratory of Oral Diseases Research of Anhui Province, College and Hospital of Stomatology, Anhui Medical University, Hefei 230032, P. R. China
| | - Yifan Lu
- Applied Oral Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong 999077, SAR, P. R. China
| | - Panpan Zhang
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230032, P. R. China
| | - Yiwei Sun
- Department of Orthopedics, The First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230032, P. R. China
| | - Hemu Chen
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230032, P. R. China
| | - Cailiang Shen
- Department of Orthopedics, The First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230032, P. R. China
| | - Yuanyin Wang
- Department of Orthopedics, The First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230032, P. R. China
- Key Laboratory of Oral Diseases Research of Anhui Province, College and Hospital of Stomatology, Anhui Medical University, Hefei 230032, P. R. China
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Han S, Yang H, Ni X, Deng Y, Li Z, Xing X, Du M. Programmed release of vascular endothelial growth factor and exosome from injectable chitosan nanofibrous microsphere-based PLGA-PEG-PLGA hydrogel for enhanced bone regeneration. Int J Biol Macromol 2023; 253:126721. [PMID: 37673168 DOI: 10.1016/j.ijbiomac.2023.126721] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 08/31/2023] [Accepted: 09/03/2023] [Indexed: 09/08/2023]
Abstract
The healing of large bone defects remains a significant challenge in clinical practice. Accelerating both angiogenesis and osteogenesis can promote effective bone healing. In the natural healing process, angiogenesis precedes osteogenesis, providing a blood supply that supports the subsequent progression of osteogenesis. Developing a biomimetic scaffold that mimics the in vivo environment and promotes the proper sequence of vascularization followed by ossification is crucial for successful bone regeneration. In this study, a novel injectable dual-drug programmed releasing chitosan nanofibrous microsphere-based poly(D, l-lactide-co-glycolide)-b-poly(ethylene glycol)-b-poly(D,l-lactide-co-glycolide) (PLGA-PEG-PLGA) hydrogel is fabricated by incorporating vascular endothelial growth factor (VEGF) and microspheres loaded with dental pulp stem cells-derived exosomes (DPSCs-Exo). Rapid release of VEGF promotes the swift initiation of angiogenesis, while DPSCs-Exo release ensures persistent osteogenesis. Our results demonstrate that chitosan microsphere-based PLGA-PEG-PLGA hydrogel significantly promotes angiogenesis in human umbilical vascular endothelial cells and enhances the osteogenic differentiation of pre-osteoblasts. Furthermore, in vivo transplantation of this injectable chitosan microsphere-based PLGA-PEG-PLGA hydrogel into calvarial bone defects markedly promotes bone formation. Overall, our study provides a promising approach for improving bone regeneration by temporally replicating the behavior of angiogenesis and osteogenesis.
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Affiliation(s)
- Shuang Han
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Hongye Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Xiaoqi Ni
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Yunfan Deng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Zubing Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Xin Xing
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China.
| | - Minquan Du
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China.
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11
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Pereira M, Pinto J, Arteaga B, Guerra A, Jorge RN, Monteiro FJ, Salgado CL. A Comprehensive Look at In Vitro Angiogenesis Image Analysis Software. Int J Mol Sci 2023; 24:17625. [PMID: 38139453 PMCID: PMC10743557 DOI: 10.3390/ijms242417625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/11/2023] [Accepted: 12/14/2023] [Indexed: 12/24/2023] Open
Abstract
One of the complex challenges faced presently by tissue engineering (TE) is the development of vascularized constructs that accurately mimic the extracellular matrix (ECM) of native tissue in which they are inserted to promote vessel growth and, consequently, wound healing and tissue regeneration. TE technique is characterized by several stages, starting from the choice of cell culture and the more appropriate scaffold material that can adequately support and supply them with the necessary biological cues for microvessel development. The next step is to analyze the attained microvasculature, which is reliant on the available labeling and microscopy techniques to visualize the network, as well as metrics employed to characterize it. These are usually attained with the use of software, which has been cited in several works, although no clear standard procedure has been observed to promote the reproduction of the cell response analysis. The present review analyzes not only the various steps previously described in terms of the current standards for evaluation, but also surveys some of the available metrics and software used to quantify networks, along with the detection of analysis limitations and future improvements that could lead to considerable progress for angiogenesis evaluation and application in TE research.
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Affiliation(s)
- Mariana Pereira
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (M.P.); (J.P.); (B.A.); (F.J.M.)
- INEB—Instituto de Engenharia Biomédica, Universidade do Porto, 4200-135 Porto, Portugal
| | - Jéssica Pinto
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (M.P.); (J.P.); (B.A.); (F.J.M.)
- INEB—Instituto de Engenharia Biomédica, Universidade do Porto, 4200-135 Porto, Portugal
| | - Belén Arteaga
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (M.P.); (J.P.); (B.A.); (F.J.M.)
- INEB—Instituto de Engenharia Biomédica, Universidade do Porto, 4200-135 Porto, Portugal
- Faculty of Medicine, University of Granada, Parque Tecnológico de la Salud, Av. de la Investigación 11, 18016 Granada, Spain
| | - Ana Guerra
- INEGI—Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial, 4200-465 Porto, Portugal; (A.G.); (R.N.J.)
| | - Renato Natal Jorge
- INEGI—Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial, 4200-465 Porto, Portugal; (A.G.); (R.N.J.)
- LAETA—Laboratório Associado de Energia, Transportes e Aeronáutica, Universidade do Porto, 4200-165 Porto, Portugal
- FEUP—Faculdade de Engenharia, Departamento de Engenharia Metalúrgica e de Materiais, Universidade do Porto, 4200-165 Porto, Portugal
| | - Fernando Jorge Monteiro
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (M.P.); (J.P.); (B.A.); (F.J.M.)
- INEB—Instituto de Engenharia Biomédica, Universidade do Porto, 4200-135 Porto, Portugal
- FEUP—Faculdade de Engenharia, Departamento de Engenharia Metalúrgica e de Materiais, Universidade do Porto, 4200-165 Porto, Portugal
- PCCC—Porto Comprehensive Cancer Center, 4200-072 Porto, Portugal
| | - Christiane Laranjo Salgado
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (M.P.); (J.P.); (B.A.); (F.J.M.)
- INEB—Instituto de Engenharia Biomédica, Universidade do Porto, 4200-135 Porto, Portugal
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12
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Jurczak P, Lach S. Hydrogels as Scaffolds in Bone-Related Tissue Engineering and Regeneration. Macromol Biosci 2023; 23:e2300152. [PMID: 37276333 DOI: 10.1002/mabi.202300152] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/22/2023] [Indexed: 06/07/2023]
Abstract
Several years have passed since the medical and scientific communities leaned toward tissue engineering as the most promising field to aid bone diseases and defects resulting from degenerative conditions or trauma. Owing to their histocompatibility and non-immunogenicity, bone grafts, precisely autografts, have long been the gold standard in bone tissue therapies. However, due to issues associated with grafting, especially the surgical risks and soaring prices of the procedures, alternatives are being extensively sought and researched. Fibrous and non-fibrous materials, synthetic substitutes, or cell-based products are just a few examples of research directions explored as potential solutions. A very promising subgroup of these replacements involves hydrogels. Biomaterials resembling the bone extracellular matrix and therefore acting as 3D scaffolds, providing the appropriate mechanical support and basis for cell growth and tissue regeneration. Additional possibility of using various stimuli in the form of growth factors, cells, etc., within the hydrogel structure, extends their use as bioactive agent delivery platforms and acts in favor of their further directed development. The aim of this review is to bring the reader closer to the fascinating subject of hydrogel scaffolds and present the potential of these materials, applied in bone and cartilage tissue engineering and regeneration.
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Affiliation(s)
- Przemyslaw Jurczak
- Laboratory of Molecular and Cellular Nephrology, Mossakowski Medical Research Centre Polish Academy of Sciences, Gdansk, 80-308, Poland
- Department of Biomedical Chemistry, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, Gdansk, 80-308, Poland
| | - Slawomir Lach
- Department of Biomedical Chemistry, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, Gdansk, 80-308, Poland
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Martin KE, Hunckler MD, Chee E, Caplin JD, Barber GF, Kalelkar PP, Schneider RS, García AJ. Hydrolytic hydrogels tune mesenchymal stem cell persistence and immunomodulation for enhanced diabetic cutaneous wound healing. Biomaterials 2023; 301:122256. [PMID: 37517209 PMCID: PMC10529272 DOI: 10.1016/j.biomaterials.2023.122256] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/20/2023] [Accepted: 07/23/2023] [Indexed: 08/01/2023]
Abstract
Diabetes is associated with an altered global inflammatory state with impaired wound healing. Mesenchymal stem/stromal cells (MSC) are being explored for treatment of diabetic cutaneous wounds due to their regenerative properties. These cells are commonly delivered by injection, but the need to prolong the retention of MSC at sites of injury has spurred the development of biomaterial-based MSC delivery vehicles. However, controlling biomaterial degradation rates in vivo remains a therapeutic-limiting challenge. Here, we utilize hydrolytically degradable ester linkages to engineer synthetic hydrogels with tunable in vivo degradation kinetics for temporally controlled delivery of MSC. In vivo hydrogel degradation rate can be controlled by altering the ratio of ester to amide linkages in the hydrogel macromers. These hydrolytic hydrogels degrade at rates that enable unencumbered cutaneous wound healing, while enhancing the local persistence MSC compared to widely used protease-degradable hydrogels. Furthermore, hydrogel-based delivery of MSC modulates local immune responses and enhances cutaneous wound repair in diabetic mice. This study introduces a simple strategy for engineering tunable degradation modalities into synthetic biomaterials, overcoming a key barrier to their use as cell delivery vehicles.
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Affiliation(s)
- Karen E Martin
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA; Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| | - Michael D Hunckler
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA; Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| | - Eunice Chee
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA; Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| | - Jeremy D Caplin
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA; Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| | - Graham F Barber
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA; Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| | - Pranav P Kalelkar
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA; Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| | - Rebecca S Schneider
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA; School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Andrés J García
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA; Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA.
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Ge C, Li Y, Wu F, Ma P, Franceschi RT. Synthetic peptides activating discoidin domain receptor 2 and collagen-binding integrins cooperate to stimulate osteoblast differentiation of skeletal progenitor cells. Acta Biomater 2023; 166:109-118. [PMID: 37245640 PMCID: PMC10617013 DOI: 10.1016/j.actbio.2023.05.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 05/16/2023] [Accepted: 05/22/2023] [Indexed: 05/30/2023]
Abstract
Skeletal progenitor: collagen interactions are critical for bone development and regeneration. Both collagen-binding integrins and discoidin domain receptors (DDR1 and DDR2) function as collagen receptors in bone. Each receptor is activated by a distinct collagen sequence; GFOGER for integrins and GVMGFO for DDRs. Specific triple helical peptides containing each of these binding domains were evaluated for ability to stimulate DDR2 and integrin signaling and osteoblast differentiation. GVMGFO peptide stimulated DDR2 Y740 phosphorylation and osteoblast differentiation as measured by induction of osteoblast marker mRNAs and mineralization without affecting integrin activity. In contrast, GFOGER peptide stimulated focal adhesion kinase (FAK) Y397 phosphorylation, an early measure of integrin activation, and to a lesser extent osteoblast differentiation without affecting DDR2-P. Significantly, the combination of both peptides cooperatively enhanced both DDR2 and FAK signaling and osteoblast differentiation, a response that was blocked in Ddr2-deficient cells. These studies suggest that the development of scaffolds containing DDR and integrin-activating peptides may provide a new route for promoting bone regeneration. STATEMENT OF SIGNIFICANCE: A method for stimulating osteoblast differentiation of skeletal progenitor cells is described that uses culture surfaces coated with a collagen-derived triple-helical peptide to selectively activate discoidin domain receptors. When this peptide is combined with an integrin-activating peptide, synergistic stimulation of differentiation is seen. This approach of combining collagen-derived peptides to stimulate the two main collagen receptors in bone (DDR2 and collagen-binding integrins) provides a route for developing a new class of tissue engineering scaffolds for bone regeneration.
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Affiliation(s)
- Chunxi Ge
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, 1011 N. University Avenue, Ann Arbor, MI 48109-1078, USA
| | - Yiming Li
- Department of Biologic and Materials Sciences and Prosthodontics, University of Michigan School of Dentistry, 1011 N. University Avenue, Ann Arbor, MI 48109-1078, USA
| | - Fashuai Wu
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, 1011 N. University Avenue, Ann Arbor, MI 48109-1078, USA; Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Peter Ma
- Department of Biologic and Materials Sciences and Prosthodontics, University of Michigan School of Dentistry, 1011 N. University Avenue, Ann Arbor, MI 48109-1078, USA
| | - Renny T Franceschi
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, 1011 N. University Avenue, Ann Arbor, MI 48109-1078, USA.
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15
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Min K, Tae G. Cellular infiltration in an injectable sulfated cellulose nanocrystal hydrogel and efficient angiogenesis by VEGF loading. Biomater Res 2023; 27:28. [PMID: 37038209 PMCID: PMC10084697 DOI: 10.1186/s40824-023-00373-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 03/30/2023] [Indexed: 04/12/2023] Open
Abstract
BACKGROUND Cellular infiltration and angiogenesis into implanted biomaterial scaffolds are crucial for successful host tissue integration and tissue regeneration. Cellulose nanocrystal (CNC) is a nano-sized cellulose derivative, which can form an injectable physical gel with salts. Sulfate groups of sulfated CNC (CNC-S) can act as a binding domain to various growth factors and cytokines with a heparin-binding domain for sustained release of them. Vascular endothelial growth factor (VEGF) can promote the proliferation of endothelial cells and angiogenesis. In this study, VEGF-loaded CNC-S hydrogel was evaluated as an injectable scaffold that can induce cellular infiltration and angiogenesis. METHODS CNC-S was hydrolyzed to get desulfated CNC (CNC-DS), which was used as a negative control group against CNC-S. Both CNC-S and CNC-DS hydrogels were prepared and compared in terms of biocompatibility and VEGF release. The hydrogels with or without VEGF loading were subcutaneously injected into mice to evaluate the biocompatibility, cellular infiltration, and angiogenesis induction of the hydrogels. RESULTS Both hydrogels possessed similar stability and shear-thinning behavior to be applicable as injectable hydrogels. However, CNC-S hydrogel showed sustained release (until 8 weeks) of VEGF whereas CNC-DS showed a very fast release of VEGF with a large burst. Subcutaneously injected CNC-S hydrogel showed much enhanced cellular infiltration as well as better biocompatibility with milder foreign body response than CNC-DS hydrogel. Furthermore, VEGF-loaded CNC-S hydrogel induced significant angiogenesis inside the hydrogel whereas VEGF-loaded CNC-DS did not. CONCLUSION CNC-S possesses good properties as a biomaterial including injectability, biocompatibility, and allowing cellular infiltration and sustained release of growth factors. VEGF-loaded CNC-S hydrogel exhibited efficient angiogenesis inside the hydrogel. The sulfate group of CNC-S was a key for good biocompatibility and the biological activities of VEGF-loaded CNC hydrogel.
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Affiliation(s)
- Kiyoon Min
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-Gwagiro, Buk-Gu, Gwangju, 61005, Republic of Korea
| | - Giyoong Tae
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-Gwagiro, Buk-Gu, Gwangju, 61005, Republic of Korea.
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16
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Shineh G, Patel K, Mobaraki M, Tayebi L. Functional Approaches in Promoting Vascularization and Angiogenesis in Bone Critical-Sized Defects via Delivery of Cells, Growth Factors, Drugs, and Particles. J Funct Biomater 2023; 14:99. [PMID: 36826899 PMCID: PMC9960138 DOI: 10.3390/jfb14020099] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023] Open
Abstract
Critical-sized bone defects, or CSDs, are defined as bone defects that cannot be regenerated by themselves and require surgical intervention via employing specific biomaterials and a certain regenerative strategy. Although a variety of approaches can be used to treat CSDs, poor angiogenesis and vascularization remain an obstacle in these methods. The complex biological healing of bone defects depends directly on the function of blood flow to provide sufficient oxygen and nutrients and the removal of waste products from the defect site. The absence of vascularization can lead to non-union and delayed-union defect development. To overcome this challenge, angiogenic agents can be delivered to the site of injury to stimulate vessel formation. This review begins by introducing the treatment methods for CSDs. The importance of vascularization in CSDs is subsequently highlighted. Delivering angiogenesis agents, including relevant growth factors, cells, drugs, particles, cell secretion substances, their combination, and co-delivery to CSDs are fully explored. Moreover, the effects of such agents on new bone formation, followed by vessel formation in defect areas, are evaluated.
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Affiliation(s)
- Ghazal Shineh
- School of Biomedical Engineering, University of Sydney, Sydney, NSW 2006, Australia
| | - Kishan Patel
- School of Dentistry, Marquette University, Milwaukee, WI 53207, USA
| | - Mohammadmahdi Mobaraki
- Biomaterial Group, Faculty of Biomedical Engineering, Amirkabir University of Technology, Tehran 15916-34311, Iran
| | - Lobat Tayebi
- School of Dentistry, Marquette University, Milwaukee, WI 53207, USA
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Sun S, Cui Y, Yuan B, Dou M, Wang G, Xu H, Wang J, Yin W, Wu D, Peng C. Drug delivery systems based on polyethylene glycol hydrogels for enhanced bone regeneration. Front Bioeng Biotechnol 2023; 11:1117647. [PMID: 36793443 PMCID: PMC9923112 DOI: 10.3389/fbioe.2023.1117647] [Citation(s) in RCA: 29] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 01/18/2023] [Indexed: 01/31/2023] Open
Abstract
Drug delivery systems composed of osteogenic substances and biological materials are of great significance in enhancing bone regeneration, and appropriate biological carriers are the cornerstone for their construction. Polyethylene glycol (PEG) is favored in bone tissue engineering due to its good biocompatibility and hydrophilicity. When combined with other substances, the physicochemical properties of PEG-based hydrogels fully meet the requirements of drug delivery carriers. Therefore, this paper reviews the application of PEG-based hydrogels in the treatment of bone defects. The advantages and disadvantages of PEG as a carrier are analyzed, and various modification methods of PEG hydrogels are summarized. On this basis, the application of PEG-based hydrogel drug delivery systems in promoting bone regeneration in recent years is summarized. Finally, the shortcomings and future developments of PEG-based hydrogel drug delivery systems are discussed. This review provides a theoretical basis and fabrication strategy for the application of PEG-based composite drug delivery systems in local bone defects.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Dankai Wu
- Orthopaedic Medical Center, Second Hospital of Jilin University, Changchun, China
| | - Chuangang Peng
- Orthopaedic Medical Center, Second Hospital of Jilin University, Changchun, China
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18
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Qin Q, Liu Y, Yang Z, Aimaijiang M, Ma R, Yang Y, Zhang Y, Zhou Y. Hypoxia-Inducible Factors Signaling in Osteogenesis and Skeletal Repair. Int J Mol Sci 2022; 23:ijms231911201. [PMID: 36232501 PMCID: PMC9569554 DOI: 10.3390/ijms231911201] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/10/2022] [Accepted: 09/14/2022] [Indexed: 11/23/2022] Open
Abstract
Sufficient oxygen is required to maintain normal cellular and physiological function, such as a creature’s development, breeding, and homeostasis. Lately, some researchers have reported that both pathological hypoxia and environmental hypoxia might affect bone health. Adaptation to hypoxia is a pivotal cellular event in normal cell development and differentiation and in pathological settings such as ischemia. As central mediators of homeostasis, hypoxia-inducible transcription factors (HIFs) can allow cells to survive in a low-oxygen environment and are essential for the regulation of osteogenesis and skeletal repair. From this perspective, we summarized the role of HIF-1 and HIF-2 in signaling pathways implicated in bone development and skeletal repair and outlined the molecular mechanism of regulation of downstream growth factors and protein molecules such as VEGF, EPO, and so on. All of these present an opportunity for developing therapies for bone regeneration.
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19
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Guimarães CF, Marques AP, Reis RL. Pushing the Natural Frontier: Progress on the Integration of Biomaterial Cues toward Combinatorial Biofabrication and Tissue Engineering. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2105645. [PMID: 35419887 DOI: 10.1002/adma.202105645] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 03/14/2022] [Indexed: 06/14/2023]
Abstract
The engineering of fully functional, biological-like tissues requires biomaterials to direct cellular events to a near-native, 3D niche extent. Natural biomaterials are generally seen as a safe option for cell support, but their biocompatibility and biodegradability can be just as limited as their bioactive/biomimetic performance. Furthermore, integrating different biomaterial cues and their final impact on cellular behavior is a complex equation where the outcome might be very different from the sum of individual parts. This review critically analyses recent progress on biomaterial-induced cellular responses, from simple adhesion to more complex stem cell differentiation, looking at the ever-growing possibilities of natural materials modification. Starting with a discussion on native material formulation and the inclusion of cell-instructive cues, the roles of shape and mechanical stimuli, the susceptibility to cellular remodeling, and the often-overlooked impact of cellular density and cell-cell interactions within constructs, are delved into. Along the way, synergistic and antagonistic combinations reported in vitro and in vivo are singled out, identifying needs and current lessons on the development of natural biomaterial libraries to solve the cell-material puzzle efficiently. This review brings together knowledge from different fields envisioning next-generation, combinatorial biomaterial development toward complex tissue engineering.
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Affiliation(s)
- Carlos F Guimarães
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, Guimarães, 4805-017, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Alexandra P Marques
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, Guimarães, 4805-017, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rui L Reis
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, Guimarães, 4805-017, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
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20
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Xue N, Ding X, Huang R, Jiang R, Huang H, Pan X, Min W, Chen J, Duan JA, Liu P, Wang Y. Bone Tissue Engineering in the Treatment of Bone Defects. Pharmaceuticals (Basel) 2022; 15:879. [PMID: 35890177 PMCID: PMC9324138 DOI: 10.3390/ph15070879] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/12/2022] [Accepted: 07/15/2022] [Indexed: 02/05/2023] Open
Abstract
Bones play an important role in maintaining exercise and protecting organs. Bone defect, as a common orthopedic disease in clinics, can cause tremendous damage with long treatment cycles. Therefore, the treatment of bone defect remains as one of the main challenges in clinical practice. Today, with increased incidence of bone disease in the aging population, demand for bone repair material is high. At present, the method of clinical treatment for bone defects including non-invasive therapy and invasive therapy. Surgical treatment is the most effective way to treat bone defects, such as using bone grafts, Masquelet technique, Ilizarov technique etc. In recent years, the rapid development of tissue engineering technology provides a new treatment strategy for bone repair. This review paper introduces the current situation and challenges of clinical treatment of bone defect repair in detail. The advantages and disadvantages of bone tissue engineering scaffolds are comprehensively discussed from the aspect of material, preparation technology, and function of bone tissue engineering scaffolds. This paper also summarizes the 3D printing technology based on computer technology, aiming at designing personalized artificial scaffolds that can accurately fit bone defects.
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Affiliation(s)
- Nannan Xue
- Jiangsu Provincial Engineering Research Center of Traditional Chinese Medicine External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, China; (N.X.); (X.D.); (R.H.); (R.J.); (H.H.); (W.M.); (J.C.)
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, China; (X.P.); (J.-A.D.)
| | - Xiaofeng Ding
- Jiangsu Provincial Engineering Research Center of Traditional Chinese Medicine External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, China; (N.X.); (X.D.); (R.H.); (R.J.); (H.H.); (W.M.); (J.C.)
| | - Rizhong Huang
- Jiangsu Provincial Engineering Research Center of Traditional Chinese Medicine External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, China; (N.X.); (X.D.); (R.H.); (R.J.); (H.H.); (W.M.); (J.C.)
| | - Ruihan Jiang
- Jiangsu Provincial Engineering Research Center of Traditional Chinese Medicine External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, China; (N.X.); (X.D.); (R.H.); (R.J.); (H.H.); (W.M.); (J.C.)
| | - Heyan Huang
- Jiangsu Provincial Engineering Research Center of Traditional Chinese Medicine External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, China; (N.X.); (X.D.); (R.H.); (R.J.); (H.H.); (W.M.); (J.C.)
| | - Xin Pan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, China; (X.P.); (J.-A.D.)
| | - Wen Min
- Jiangsu Provincial Engineering Research Center of Traditional Chinese Medicine External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, China; (N.X.); (X.D.); (R.H.); (R.J.); (H.H.); (W.M.); (J.C.)
| | - Jun Chen
- Jiangsu Provincial Engineering Research Center of Traditional Chinese Medicine External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, China; (N.X.); (X.D.); (R.H.); (R.J.); (H.H.); (W.M.); (J.C.)
| | - Jin-Ao Duan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, China; (X.P.); (J.-A.D.)
| | - Pei Liu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, China; (X.P.); (J.-A.D.)
| | - Yiwei Wang
- Jiangsu Provincial Engineering Research Center of Traditional Chinese Medicine External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing 210023, China; (N.X.); (X.D.); (R.H.); (R.J.); (H.H.); (W.M.); (J.C.)
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, China; (X.P.); (J.-A.D.)
- Burns Injury and Reconstructive Surgery Research, ANZAC Research Institute, University of Sydney, Concord Repatriation General Hospital, Concord 2137, Australia
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Wang Q, Zhang Y, Zhang E, Xing X, Chen Y, Nie K, Yuan H, Su MY, Lang N. A Multiparametric Method Based on Clinical and CT-Based Radiomics to Predict the Expression of p53 and VEGF in Patients With Spinal Giant Cell Tumor of Bone. Front Oncol 2022; 12:894696. [PMID: 35800059 PMCID: PMC9253421 DOI: 10.3389/fonc.2022.894696] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 05/19/2022] [Indexed: 11/13/2022] Open
Abstract
PurposeThis project aimed to assess the significance of vascular endothelial growth factor (VEGF) and p53 for predicting progression-free survival (PFS) in patients with spinal giant cell tumor of bone (GCTB) and to construct models for predicting these two biomarkers based on clinical and computer tomography (CT) radiomics to identify high-risk patients for improving treatment.Material and MethodsA retrospective study was performed from April 2009 to January 2019. A total of 80 patients with spinal GCTB who underwent surgery in our institution were identified. VEGF and p53 expression and clinical and general imaging information were collected. Multivariate Cox regression models were used to verify the prognostic factors. The radiomics features were extracted from the regions of interest (ROIs) in preoperative CT, and then important features were selected by the SVM to build classification models, evaluated by 10-fold crossvalidation. The clinical variables were processed using the same method to build a conventional model for comparison.ResultsThe immunohistochemistry of 80 patients was obtained: 49 with high-VEGF and 31 with low-VEGF, 68 with wild-type p53, and 12 with mutant p53. p53 and VEGF were independent prognostic factors affecting PFS found in multivariate Cox regression analysis. For VEGF, the Spinal Instability Neoplastic Score (SINS) was greater in the high than low groups, p < 0.001. For p53, SINS (p = 0.030) and Enneking stage (p = 0.017) were higher in mutant than wild-type groups. The VEGF radiomics model built using 3 features achieved an area under the curve (AUC) of 0.88, and the p53 radiomics model built using 4 features had an AUC of 0.79. The conventional model built using SINS, and the Enneking stage had a slightly lower AUC of 0.81 for VEGF and 0.72 for p53.Conclusionp53 and VEGF are associated with prognosis in patients with spinal GCTB, and the radiomics analysis based on preoperative CT provides a feasible method for the evaluation of these two biomarkers, which may aid in choosing better management strategies.
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Affiliation(s)
- Qizheng Wang
- Department of Radiology, Peking University Third Hospital, Beijing, China
| | - Yang Zhang
- Department of Radiological Sciences, University of California Irvine, Irvine, CA, United States
- Department of Radiation Oncology, Robert Wood Johnson Medical School, New Brunswick, NJ, United States
| | - Enlong Zhang
- Department of Radiology, Peking University International Hospital, Beijing, China
| | - Xiaoying Xing
- Department of Radiology, Peking University Third Hospital, Beijing, China
| | - Yongye Chen
- Department of Radiology, Peking University Third Hospital, Beijing, China
| | - Ke Nie
- Department of Radiation Oncology, Robert Wood Johnson Medical School, New Brunswick, NJ, United States
| | - Huishu Yuan
- Department of Radiology, Peking University Third Hospital, Beijing, China
| | - Min-Ying Su
- Department of Radiological Sciences, University of California Irvine, Irvine, CA, United States
- Department of Medical Imaging and Radiological Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan
- *Correspondence: Ning Lang, ; Min-Ying Su,
| | - Ning Lang
- Department of Radiology, Peking University Third Hospital, Beijing, China
- *Correspondence: Ning Lang, ; Min-Ying Su,
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22
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Malcor JD, Mallein-Gerin F. Biomaterial functionalization with triple-helical peptides for tissue engineering. Acta Biomater 2022; 148:1-21. [PMID: 35675889 DOI: 10.1016/j.actbio.2022.06.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/09/2022] [Accepted: 06/01/2022] [Indexed: 11/29/2022]
Abstract
In the growing field of tissue engineering, providing cells in biomaterials with the adequate biological cues represents an increasingly important challenge. Yet, biomaterials with excellent mechanical properties often are often biologically inert to many cell types. To address this issue, researchers resort to functionalization, i.e. the surface modification of a biomaterial with active molecules or substances. Functionalization notably aims to replicate the native cellular microenvironment provided by the extracellular matrix, and in particular by collagen, its major component. As our understanding of biological processes regulating cell behaviour increases, functionalization with biomolecules binding cell surface receptors constitutes a promising strategy. Amongst these, triple-helical peptides (THPs) that reproduce the architectural and biological properties of collagen are especially attractive. Indeed, THPs containing binding sites from the native collagen sequence have successfully been used to guide cell response by establishing cell-biomaterial interactions. Notably, the GFOGER motif recognising the collagen-binding integrins is extensively employed as a cell adhesive peptide. In biomaterials, THPs efficiently improved cell adhesion, differentiation and function on biomaterials designed for tissue repair (especially for bone, cartilage, tendon and heart), vascular graft fabrication, wound dressing, drug delivery or immunomodulation. This review describes the key characteristics of THPs, their effect on cells when combined to biomaterials and their strong potential as biomimetic tools for regenerative medicine. STATEMENT OF SIGNIFICANCE: This review article describes how triple-helical peptides constitute efficient tools to improve cell-biomaterial interactions in tissue engineering. Triple helical peptides are bioactive molecules that mimic the architectural and biological properties of collagen. They have been successfully used to specifically recognize cell-surface receptors and provide cells seeded on biomaterials with controlled biological cues. Functionalization with triple-helical peptides has enabled researchers to improve cell function for regenerative medicine applications, such as tissue repair. However, despite encouraging results, this approach remains limited and under-exploited, and most functionalization strategies reported in the literature rely on biomolecules that are unable to address collagen-binding receptors. This review will assist researchers in selecting the correct tools to functionalize biomaterials in efforts to guide cellular response.
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Affiliation(s)
- Jean-Daniel Malcor
- Laboratory of Tissue Biology and Therapeutic Engineering, CNRS UMR 5305, University Claude Bernard-Lyon 1 and University of Lyon, 7 Passage du Vercors, Cedex 07, Lyon 69367, France.
| | - Frédéric Mallein-Gerin
- Laboratory of Tissue Biology and Therapeutic Engineering, CNRS UMR 5305, University Claude Bernard-Lyon 1 and University of Lyon, 7 Passage du Vercors, Cedex 07, Lyon 69367, France
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23
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Wu H, Yin G, Pu X, Wang J, Liao X, Huang Z. Preliminary Study on the Antigen-Removal from Extracellular Matrix via Different Decellularization. Tissue Eng Part C Methods 2022; 28:250-263. [PMID: 35596569 DOI: 10.1089/ten.tec.2022.0025] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Due to the abundance of bioactive components, surficial decoration with cell-derived extracellular matrix (ECM) is a promising strategy to improve the biological functionality of the tissue engineering scaffolds. However, decellularization is necessary to remove antigenic components in the ECM that may trigger adverse immune response. Freeze-thaw (FT) cycles and treatment with Triton X-100/ammonium hydroxide (TN) are two commonly used decellularization methods for ECM, but their effects on both growth factor retention and antigen removal are still controversial. The objectives of this study are to compare the preservation of ECM texture and beneficial ingredients and the removal of cellular antigens by these two methods. First, the constructs combined bone marrow mesenchymal stem cell-derived ECM and poly(lactic-co-glycolic acid) (PLGA) membrane are prepared and decellularized using FT and TN treatments. Moreover, the effects of decellularization on the ultrastructure and the composition of ECM-decorated PLGA membrane are compared by scanning electron microscope observation and protein quantification. Furthermore, the ECM deposited on PLGA is stripped off and then implanted subcutaneously in rats, and the host macrophage and local lymphocyte responses were investigated. Finally, ECM-decorated porous PLGA scaffolds are implanted into rat calvarial defects, and the new bone formation is evaluated. Our results showed that both methods effectively removed DNA. TN treatment partially retained collagen, glycosaminoglycan, bone morphogenetic protein-2, and vascular endothelial growth factor, and better preserved structural integrity than FT treatment. ECM implants decellularized by both methods induced a mild host response after subcutaneous implantation. Although the total content of residual DNA in the two ECMs digested by the DNA enzyme seemed to be similar and very low, the interfaces between implanted materials and natural tissues in the TN group recruited lower numbers of CD68+ macrophages, CD68+CD86+ (M1) macrophages, and CD4+ T lymphocytes than that in FT group, implying that there exist other ECM antigens to influence immune response besides DNA. Furthermore, ECM-decorated scaffolds decellularized by TN treatment induced greater bone formation than that of bare scaffolds in vivo, demonstrating the effective retention of ECM bioactive components after decellularization. This study showed that TN treatment was a more effective and safer decellularization method than FT cycles. Impact statement Decellularization is a prerequisite for extracellular matrix (ECM) application, but there is still no standard for its selection. This study demonstrated that detergent treatment was more effective than freeze-thaw (FT) cycles in removing ECM antigens besides DNA, and the prepared ECM elicited a milder allogenic immune response, which ensured the safety of ECM. Moreover, detergent better preserved the ECM integrity than FT cycles, and effectively retained growth factors, and the decellularized ECM-decorated scaffolds significantly promoted bone repair, which ensured the effectiveness of ECM. This study provides the theoretical and experimental bases for the decellularization strategy of ECM-modified tissue engineering scaffolds.
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Affiliation(s)
- Huan Wu
- College of Biomedical Engineering, Sichuan University, Chengdu, P.R. China
| | - Guangfu Yin
- College of Biomedical Engineering, Sichuan University, Chengdu, P.R. China
| | - Ximing Pu
- College of Biomedical Engineering, Sichuan University, Chengdu, P.R. China
| | - Juan Wang
- College of Biomedical Engineering, Sichuan University, Chengdu, P.R. China
| | - Xiaoming Liao
- College of Biomedical Engineering, Sichuan University, Chengdu, P.R. China
| | - Zhongbing Huang
- College of Biomedical Engineering, Sichuan University, Chengdu, P.R. China
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24
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O'Shea DG, Curtin CM, O'Brien FJ. Articulation inspired by nature: a review of biomimetic and biologically active 3D printed scaffolds for cartilage tissue engineering. Biomater Sci 2022; 10:2462-2483. [PMID: 35355029 PMCID: PMC9113059 DOI: 10.1039/d1bm01540k] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 03/17/2022] [Indexed: 11/21/2022]
Abstract
In the human body, articular cartilage facilitates the frictionless movement of synovial joints. However, due to its avascular and aneural nature, it has a limited ability to self-repair when damaged due to injury or wear and tear over time. Current surgical treatment options for cartilage defects often lead to the formation of fibrous, non-durable tissue and thus a new solution is required. Nature is the best innovator and so recent advances in the field of tissue engineering have aimed to recreate the microenvironment of native articular cartilage using biomaterial scaffolds. However, the inability to mirror the complexity of native tissue has hindered the clinical translation of many products thus far. Fortunately, the advent of 3D printing has provided a potential solution. 3D printed scaffolds, fabricated using biomimetic biomaterials, can be designed to mimic the complex zonal architecture and composition of articular cartilage. The bioinks used to fabricate these scaffolds can also be further functionalised with cells and/or bioactive factors or gene therapeutics to mirror the cellular composition of the native tissue. Thus, this review investigates how the architecture and composition of native articular cartilage is inspiring the design of biomimetic bioinks for 3D printing of scaffolds for cartilage repair. Subsequently, we discuss how these 3D printed scaffolds can be further functionalised with cells and bioactive factors, as well as looking at future prospects in this field.
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Affiliation(s)
- Donagh G O'Shea
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, RCSI University of Medicine and Health Sciences, Dublin, Ireland.
- Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | - Caroline M Curtin
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, RCSI University of Medicine and Health Sciences, Dublin, Ireland.
- Trinity Centre for Biomedical Engineering, Trinity College Dublin, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | - Fergal J O'Brien
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, RCSI University of Medicine and Health Sciences, Dublin, Ireland.
- Trinity Centre for Biomedical Engineering, Trinity College Dublin, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
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25
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Safina I, Embree MC. Biomaterials for recruiting and activating endogenous stem cells in situ tissue regeneration. Acta Biomater 2022; 143:26-38. [PMID: 35292413 PMCID: PMC9035107 DOI: 10.1016/j.actbio.2022.03.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 02/28/2022] [Accepted: 03/07/2022] [Indexed: 12/20/2022]
Abstract
Over the past two decades in situ tissue engineering has emerged as a new approach where biomaterials are used to harness the body's own stem/progenitor cells to regenerate diseased or injured tissue. Immunomodulatory biomaterials are designed to promote a regenerative environment, recruit resident stem cells to diseased or injured tissue sites, and direct them towards tissue regeneration. This review explores advances gathered from in vitro and in vivo studies on in situ tissue regenerative therapies. Here we also examine the different ways this approach has been incorporated into biomaterial sciences in order to create customized biomaterial products for therapeutic applications in a broad spectrum of tissues and diseases. STATEMENT OF SIGNIFICANCE: Biomaterials can be designed to recruit stem cells and coordinate their behavior and function towards the restoration or replacement of damaged or diseased tissues in a process known as in situ tissue regeneration. Advanced biomaterial constructs with precise structure, composition, mechanical, and physical properties can be transplanted to tissue site and exploit local stem cells and their micro-environment to promote tissue regeneration. In the absence of cells, we explore the critical immunomodulatory, chemical and physical properties to consider in material design and choice. The application of biomaterials for in situ tissue regeneration has the potential to address a broad range of injuries and diseases.
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26
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Wang J, Wang H, Wang Y, Liu Z, Li Z, Li J, Chen Q, Meng Q, Shu WW, Wu J, Xiao C, Han F, Li B. Endothelialized microvessels fabricated by microfluidics facilitate osteogenic differentiation and promote bone repair. Acta Biomater 2022; 142:85-98. [PMID: 35114373 DOI: 10.1016/j.actbio.2022.01.055] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 01/24/2022] [Accepted: 01/26/2022] [Indexed: 02/08/2023]
Abstract
In bone tissue engineering, vascularization is one of the critical factors that limit the effect of biomaterials for bone repair. While various approaches have been tried to build vascular networks in bone grafts, lack of endothelialization still constitutes a major technical hurdle. In this study, we have developed a facile technique to fabricate endothelialized biomimetic microvessels (BMVs) from alginate-collagen composite hydrogels within a single step using microfluidic technology. BMVs with different sizes could be readily prepared by adjusting the flow rate of microfluids. All BMVs supported perfusion and outward penetration of substances in the tube. Endothelial cells could adhere and proliferate on the inner wall of tubes. It was also found that the expression of CD31 and secretion of BMP-2 and PDGF-BB were higher in the rat umbilical vein endothelial cells (RUVECs) in BMVs than those cultured on hydrogel. When co-cultured with bone marrow mesenchymal stem cells (BMSCs), endothelialized BMVs promoted the osteogenic differentiation of BMSCs compared to those in acellular BMV group. In vivo, markedly enhanced new bone formation was achieved by endothelialized BMVs in a rat critical-sized calvarial defect model compared to those with non-endothelialized BMVs or without BMVs. Together, findings from both in vitro and in vivo studies have proven that endothelialized BMVs function to facilitate osteogenesis and promote bone regeneration, and therefore might present an effective strategy in bone tissue engineering. STATEMENT OF SIGNIFICANCE: In bone tissue engineering, limited vascularization is one of the critical factors that limit the effect of biomaterials for bone repair. In this study, we developed a facile technique to fabricate endothelialized biomimetic microvessels (BMVs) from alginate-collagen composite hydrogels within a single step using microfluidic technology. Both in vitro and in vivo studies have proven that endothelialized BMVs function to facilitate osteogenesis and promote bone regeneration, and therefore might present an effective strategy in bone tissue engineering.
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27
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Fernandez-Yague MA, Hymel LA, Olingy CE, McClain C, Ogle ME, García JR, Minshew D, Vyshnya S, Lim HS, Qiu P, García AJ, Botchwey EA. Analyzing immune response to engineered hydrogels by hierarchical clustering of inflammatory cell subsets. SCIENCE ADVANCES 2022; 8:eabd8056. [PMID: 35213226 PMCID: PMC8880784 DOI: 10.1126/sciadv.abd8056] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 12/31/2021] [Indexed: 06/14/2023]
Abstract
Understanding the immune response to hydrogel implantation is critical for the design of immunomodulatory biomaterials. To study the progression of inflammation around poly(ethylene glycol) hydrogels presenting Arg-Gly-Asp (RGD) peptides and vascular endothelial growth factor, we used temporal analysis of high-dimensional flow cytometry data paired with intravital imaging, immunohistochemistry, and multiplexed proteomic profiling. RGD-presenting hydrogels created a reparative microenvironment promoting CD206+ cellular infiltration and revascularization in wounded dorsal skin tissue. Unbiased clustering algorithms (SPADE) revealed significant phenotypic transition shifts as a function of the cell-adhesion hydrogel properties. SPADE identified an intermediate macrophage subset functionally regulating in vivo cytokine secretion that was preferentially recruited for RGD-presenting hydrogels, whereas dendritic cell subsets were preferentially recruited to RDG-presenting hydrogels. Last, RGD-presenting hydrogels controlled macrophage functional cytokine secretion to direct polarization and vascularization. Our studies show that unbiased clustering of single-cell data provides unbiased insights into the underlying immune response to engineered materials.
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Affiliation(s)
- Marc A. Fernandez-Yague
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA
| | - Lauren A. Hymel
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA
| | - Claire E. Olingy
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA
| | - Claire McClain
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA
| | - Molly E. Ogle
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA
| | - José R. García
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Dustin Minshew
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Sofiya Vyshnya
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Hong Seo Lim
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Peng Qiu
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Andrés J. García
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Edward A. Botchwey
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, GA, USA
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28
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Cohen T, Kossover O, Peled E, Bick T, Hasanov L, Chun TT, Cool S, Lewinson D, Seliktar D. A combined cell and growth factor delivery for the repair of a critical size tibia defect using biodegradable hydrogel implants. J Tissue Eng Regen Med 2022; 16:380-395. [PMID: 35119200 PMCID: PMC9303443 DOI: 10.1002/term.3285] [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: 09/02/2021] [Revised: 12/09/2021] [Accepted: 01/11/2022] [Indexed: 11/16/2022]
Abstract
The ability to repair critical‐sized long‐bone injuries using growth factor and cell delivery was investigated using hydrogel biomaterials. Physiological doses of the recombinant human bone morphogenic protein‐2 (rhBMP2) were delivered in a sustained manner from a biodegradable hydrogel containing peripheral human blood‐derived endothelial progenitor cells (hEPCs). The biodegradable implants made from polyethylene glycol (PEG) and denatured fibrinogen (PEG‐fibrinogen, PF) were loaded with 7.7 μg/ml of rhBMP2 and 2.5 × 106 cells/ml hEPCs. The safety and efficacy of the implant were tested in a rodent model of a critical‐size long‐bone defect. The hydrogel implants were formed ex‐situ and placed into defects in the tibia of athymic nude rats and analyzed for bone repair after 13 weeks following surgery. The hydrogels containing a combination of 7.7 μg/ml of rhBMP2 and 2.5 × 106 cells/ml hEPCs were compared to control hydrogels containing 7.7 μg/ml of rhBMP2 only, 2.5 × 106 cells/ml hEPCs only, or bare hydrogels. Assessments of bone repair include histological analysis, bone formation at the site of implantation using quantitative microCT, and assessment of implant degradation. New bone formation was detected in all treated animals, with the highest amounts found in the treatments that included animals that combined the PF implant with rhBMP2. Moreover, statistically significant increases in the tissue mineral density (TMD), trabecular number and trabecular thickness were observed in defects treated with rhBMP2 compared to non‐rhBMP2 defects. New bone formation was significantly higher in the hEPC‐treated defects compared to bare hydrogel defects, but there were no significant differences in new bone formation, trabecular number, trabecular thickness or TMD at 13 weeks when comparing the rhBMP2 + hEPCs‐treated defects to rhBMP2‐treated defects. The study concludes that the bone regeneration using hydrogel implants containing hEPCs are overshadowed by enhanced osteogenesis associated with sustained delivery of rhBMP2.
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Affiliation(s)
- Talia Cohen
- The Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Olga Kossover
- Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Eli Peled
- The Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.,Department of Orthopedic Surgery, Rambam Medical Center, Haifa, Israel
| | - Tova Bick
- The Institute of Research of Bone Healing, the Rambam Healthcare Campus, Haifa, Israel
| | - Lena Hasanov
- Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Tan Tuan Chun
- Glycotherapeutics Group, Institute of Molecular and Cell Biology, A*STAR, Singapore, Singapore
| | - Simon Cool
- Glycotherapeutics Group, Institute of Molecular and Cell Biology, A*STAR, Singapore, Singapore
| | - Dina Lewinson
- The Institute of Research of Bone Healing, the Rambam Healthcare Campus, Haifa, Israel
| | - Dror Seliktar
- Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, Israel
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29
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Li Y, Fraser D, Mereness J, Van Hove A, Basu S, Newman M, Benoit DSW. Tissue Engineered Neurovascularization Strategies for Craniofacial Tissue Regeneration. ACS APPLIED BIO MATERIALS 2022; 5:20-39. [PMID: 35014834 PMCID: PMC9016342 DOI: 10.1021/acsabm.1c00979] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Craniofacial tissue injuries, diseases, and defects, including those within bone, dental, and periodontal tissues and salivary glands, impact an estimated 1 billion patients globally. Craniofacial tissue dysfunction significantly reduces quality of life, and successful repair of damaged tissues remains a significant challenge. Blood vessels and nerves are colocalized within craniofacial tissues and act synergistically during tissue regeneration. Therefore, the success of craniofacial regenerative approaches is predicated on successful recruitment, regeneration, or integration of both vascularization and innervation. Tissue engineering strategies have been widely used to encourage vascularization and, more recently, to improve innervation through host tissue recruitment or prevascularization/innervation of engineered tissues. However, current scaffold designs and cell or growth factor delivery approaches often fail to synergistically coordinate both vascularization and innervation to orchestrate successful tissue regeneration. Additionally, tissue engineering approaches are typically investigated separately for vascularization and innervation. Since both tissues act in concert to improve craniofacial tissue regeneration outcomes, a revised approach for development of engineered materials is required. This review aims to provide an overview of neurovascularization in craniofacial tissues and strategies to target either process thus far. Finally, key design principles are described for engineering approaches that will support both vascularization and innervation for successful craniofacial tissue regeneration.
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Affiliation(s)
- Yiming Li
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - David Fraser
- Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States.,Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, New York 14620, United States.,Translational Biomedical Sciences Program, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Jared Mereness
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States.,Department of Environmental Medicine, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Amy Van Hove
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Sayantani Basu
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Maureen Newman
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Danielle S W Benoit
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States.,Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, New York 14620, United States.,Translational Biomedical Sciences Program, University of Rochester Medical Center, Rochester, New York 14642, United States.,Department of Environmental Medicine, University of Rochester Medical Center, Rochester, New York 14642, United States.,Materials Science Program, University of Rochester, Rochester, New York 14627, United States.,Department of Chemical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Biomedical Genetics and Center for Oral Biology, University of Rochester Medical Center, Rochester, New York 14642, United States
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30
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Nazari H, Heirani-Tabasi A, Ghorbani S, Eyni H, Razavi Bazaz S, Khayati M, Gheidari F, Moradpour K, Kehtari M, Ahmadi Tafti SM, Ahmadi Tafti SH, Ebrahimi Warkiani M. Microfluidic-Based Droplets for Advanced Regenerative Medicine: Current Challenges and Future Trends. BIOSENSORS 2021; 12:20. [PMID: 35049648 PMCID: PMC8773546 DOI: 10.3390/bios12010020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 12/29/2021] [Accepted: 12/29/2021] [Indexed: 11/30/2022]
Abstract
Microfluidics is a promising approach for the facile and large-scale fabrication of monodispersed droplets for various applications in biomedicine. This technology has demonstrated great potential to address the limitations of regenerative medicine. Microfluidics provides safe, accurate, reliable, and cost-effective methods for encapsulating different stem cells, gametes, biomaterials, biomolecules, reagents, genes, and nanoparticles inside picoliter-sized droplets or droplet-derived microgels for different applications. Moreover, microenvironments made using such droplets can mimic niches of stem cells for cell therapy purposes, simulate native extracellular matrix (ECM) for tissue engineering applications, and remove challenges in cell encapsulation and three-dimensional (3D) culture methods. The fabrication of droplets using microfluidics also provides controllable microenvironments for manipulating gametes, fertilization, and embryo cultures for reproductive medicine. This review focuses on the relevant studies, and the latest progress in applying droplets in stem cell therapy, tissue engineering, reproductive biology, and gene therapy are separately evaluated. In the end, we discuss the challenges ahead in the field of microfluidics-based droplets for advanced regenerative medicine.
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Affiliation(s)
- Hojjatollah Nazari
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia; (H.N.); (S.R.B.)
| | - Asieh Heirani-Tabasi
- Research Center for Advanced Technologies in Cardiovascular Medicine, Tehran Heart Center Hospital, Tehran University of Medical Sciences, Tehran 14535, Iran; (A.H.-T.); (S.H.A.T.)
- Department of Cell Therapy and Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran 14535, Iran
| | - Sadegh Ghorbani
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus, Denmark;
| | - Hossein Eyni
- Cellular and Molecular Research Center, School of Medicine, Iran University of Medical Sciences, Tehran 14535, Iran;
- Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran 14535, Iran
| | - Sajad Razavi Bazaz
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia; (H.N.); (S.R.B.)
| | - Maryam Khayati
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan 45371, Iran;
| | - Fatemeh Gheidari
- Department of Biotechnology, University of Tehran, Tehran 14535, Iran;
| | - Keyvan Moradpour
- Department of Chemical Engineering, Sharif University of Technology, Tehran 14535, Iran;
| | - Mousa Kehtari
- Department of Biology, Faculty of Science, University of Tehran, Tehran 14535, Iran;
| | - Seyed Mohsen Ahmadi Tafti
- Colorectal Surgery Research Center, Imam Hospital Complex, Tehran University of Medical Sciences, Tehran 14535, Iran;
| | - Seyed Hossein Ahmadi Tafti
- Research Center for Advanced Technologies in Cardiovascular Medicine, Tehran Heart Center Hospital, Tehran University of Medical Sciences, Tehran 14535, Iran; (A.H.-T.); (S.H.A.T.)
| | - Majid Ebrahimi Warkiani
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia; (H.N.); (S.R.B.)
- Institute of Molecular Medicine, Sechenov University, 119991 Moscow, Russia
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31
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Dalisson B, Charbonnier B, Aoude A, Gilardino M, Harvey E, Makhoul N, Barralet J. Skeletal regeneration for segmental bone loss: Vascularised grafts, analogues and surrogates. Acta Biomater 2021; 136:37-55. [PMID: 34626818 DOI: 10.1016/j.actbio.2021.09.053] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 09/25/2021] [Accepted: 09/28/2021] [Indexed: 02/08/2023]
Abstract
Massive segmental bone defects (SBD) are mostly treated by removing the fibula and transplanting it complete with blood supply. While revolutionary 50 years ago, this remains the standard treatment. This review considers different strategies to repair SBD and emerging potential replacements for this highly invasive procedure. Prior to the technical breakthrough of microsurgery, researchers in the 1960s and 1970s had begun to make considerable progress in developing non autologous routes to repairing SBD. While the breaktthrough of vascularised bone transplantation solved the immediate problem of a lack of reliable repair strategies, much of their prior work is still relevant today. We challenge the assumption that mimicry is necessary or likely to be successful and instead point to the utility of quite crude (from a materials technology perspective), approaches. Together there are quite compelling indications that the body can regenerate entire bone segments with few or no exogenous factors. This is important, as there is a limit to how expensive a bone repair can be and still be widely available to all patients since cost restraints within healthcare systems are not likely to diminish in the near future. STATEMENT OF SIGNIFICANCE: This review is significant because it is a multidisciplinary view of several surgeons and scientists as to what is driving improvement in segmental bone defect repair, why many approaches to date have not succeeded and why some quite basic approaches can be as effective as they are. While there are many reviews of the literature of grafting and bone repair the relative lack of substantial improvement and slow rate of progress in clinical translation is often overlooked and we seek to challenge the reader to consider the issue more broadly.
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Afami ME, El Karim I, About I, Krasnodembskaya AD, Laverty G, Lundy FT. Multicomponent Peptide Hydrogels as an Innovative Platform for Cell-Based Tissue Engineering in the Dental Pulp. Pharmaceutics 2021; 13:1575. [PMID: 34683868 PMCID: PMC8539061 DOI: 10.3390/pharmaceutics13101575] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/20/2021] [Accepted: 09/22/2021] [Indexed: 11/17/2022] Open
Abstract
In light of the increasing levels of antibiotic resistance, nanomaterials and novel biologics are urgently required to manage bacterial infections. To date, commercially available self-assembling peptide hydrogels have not been studied extensively for their ability to inhibit micro-organisms relevant to tissue engineering sites such as dental root canals. In this work, we assess the biocompatibility of dental pulp stem/stromal cells with commercially available multicomponent peptide hydrogels. We also determine the effects of dental pulp stem/stromal cell (DPSC) culture in hydrogels on growth factor/cytokine expression. Furthermore, to investigate novel aspects of self-assembling peptide hydrogels, we determine their antimicrobial activity against the oral pathogens Staphylococcus aureus, Enterococcus faecalis, and Fusobacterium nucleatum. We show that self-assembling peptide hydrogels and hydrogels functionalized with the adhesion motif Arg-Gly-Asp (RGD) are biocompatible with DPSCs, and that cells grown in 3D hydrogel cultures produce a discrete secretome compared with 2D-cultured cells. Furthermore, we show that soluble peptides and assembled hydrogels have antimicrobial effects against oral pathogens. Given their antibacterial activity against oral pathogens, biocompatibility with dental pulp stem/stromal cells and enhancement of an angiogenic secretome, multicomponent peptide hydrogels hold promise for translational use.
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Affiliation(s)
- Marina E. Afami
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (M.E.A.); (I.E.K.); (A.D.K.)
| | - Ikhlas El Karim
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (M.E.A.); (I.E.K.); (A.D.K.)
| | - Imad About
- Aix Marseille Univ, CNRS, ISM, Inst Movement Sci, 13385 Marseille, France;
| | - Anna D. Krasnodembskaya
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (M.E.A.); (I.E.K.); (A.D.K.)
| | - Garry Laverty
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK;
| | - Fionnuala T. Lundy
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (M.E.A.); (I.E.K.); (A.D.K.)
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Sakemi Y, Hayashi K, Tsuchiya A, Nakashima Y, Ishikawa K. Reconstruction of critical-size segmental defects in rat femurs using carbonate apatite honeycomb scaffolds. J Biomed Mater Res A 2021; 109:1613-1622. [PMID: 33644971 DOI: 10.1002/jbm.a.37157] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 10/01/2020] [Accepted: 02/10/2021] [Indexed: 12/19/2022]
Abstract
Critical-size segmental defects are formidable challenges in orthopedic surgery. Various scaffolds have been developed to facilitate bone reconstruction within such defects. Many previously studied scaffolds achieved effective outcomes with a combination of high cost, high-risk growth factors or stem cells. Herein, we developed honeycomb scaffolds (HCSs) comprising carbonate apatite (CO3 Ap) containing 8% carbonate, identical to human bone composition. The CO3 Ap HCSs were white-columned blocks harboring regularly arranged macropore channels of a size and wall thickness of 156 ± 5 μm and 102 ± 10 μm, respectively. The compressive strengths of the HCSs parallel and perpendicular to the macropore channel direction were 51.0 ± 11.8 and 15.6 ± 2.2 MPa, respectively. The HCSs were grafted into critical-sized segmental defects in rat femurs. The HCSs bore high-load stresses without any observed breakage. Two-weeks post-implantation, calluses formed around the HCSs and immature bone formed in the HCS interior. The calluses and immature bone matured until 8 weeks via endochondral ossification. At 12 weeks post-implantation, large parts of the HCSs were gradually replaced by newly formed bone. The bone reconstruction efficacy of the CO3 Ap HCSs alone was comparable to that of protein and cell scaffolds, while achieving a lower cost and increased safety.
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Affiliation(s)
- Yuta Sakemi
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Koichiro Hayashi
- Department of Biomaterials, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Akira Tsuchiya
- Department of Biomaterials, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Yasuharu Nakashima
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kunio Ishikawa
- Department of Biomaterials, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
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Bornert F, Clauss F, Hua G, Idoux-Gillet Y, Keller L, Fernandez De Grado G, Offner D, Smaida R, Wagner Q, Fioretti F, Kuchler-Bopp S, Schulz G, Wenzel W, Gentile L, Risser L, Müller B, Huck O, Benkirane-Jessel N. Mechanistic Illustration: How Newly-Formed Blood Vessels Stopped by the Mineral Blocks of Bone Substitutes Can Be Avoided by Using Innovative Combined Therapeutics. Biomedicines 2021; 9:952. [PMID: 34440156 PMCID: PMC8394928 DOI: 10.3390/biomedicines9080952] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/16/2021] [Accepted: 08/01/2021] [Indexed: 12/30/2022] Open
Abstract
One major limitation for the vascularization of bone substitutes used for filling is the presence of mineral blocks. The newly-formed blood vessels are stopped or have to circumvent the mineral blocks, resulting in inefficient delivery of oxygen and nutrients to the implant. This leads to necrosis within the implant and to poor engraftment of the bone substitute. The aim of the present study is to provide a bone substitute currently used in the clinic with suitably guided vascularization properties. This therapeutic hybrid bone filling, containing a mineral and a polymeric component, is fortified with pro-angiogenic smart nano-therapeutics that allow the release of angiogenic molecules. Our data showed that the improved vasculature within the implant promoted new bone formation and that the newly-formed bone swapped the mineral blocks of the bone substitutes much more efficiently than in non-functionalized bone substitutes. Therefore, we demonstrated that our therapeutic bone substitute is an advanced therapeutical medicinal product, with great potential to recuperate and guide vascularization that is stopped by mineral blocks, and can improve the regeneration of critical-sized bone defects. We have also elucidated the mechanism to understand how the newly-formed vessels can no longer encounter mineral blocks and pursue their course of vasculature, giving our advanced therapeutical bone filling great potential to be used in many applications, by combining filling and nano-regenerative medicine that currently fall short because of problems related to the lack of oxygen and nutrients.
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Affiliation(s)
- Fabien Bornert
- INSERM (French National Institute of Health and Medical Research) UMR 1260, Regenerative Nanomedicine, CRBS, 1 Rue Eugène Boeckel, 67000 Strasbourg, France; (F.B.); (F.C.); (G.H.); (Y.I.-G.); (L.K.); (G.F.D.G.); (D.O.); (R.S.); (Q.W.); (F.F.); (S.K.-B.); (L.G.); (O.H.)
- Faculty of Dental Surgery, University of Strasbourg, University Hospital Strasbourg (HUS), 8 Rue de Sainte Elisabeth, 67000 Strasbourg, France
- Department of Pediatric Dentistry, University Hospital Strasbourg (HUS), 1 Place de l’Hôpital, 67000 Strasbourg, France
| | - François Clauss
- INSERM (French National Institute of Health and Medical Research) UMR 1260, Regenerative Nanomedicine, CRBS, 1 Rue Eugène Boeckel, 67000 Strasbourg, France; (F.B.); (F.C.); (G.H.); (Y.I.-G.); (L.K.); (G.F.D.G.); (D.O.); (R.S.); (Q.W.); (F.F.); (S.K.-B.); (L.G.); (O.H.)
- Faculty of Dental Surgery, University of Strasbourg, University Hospital Strasbourg (HUS), 8 Rue de Sainte Elisabeth, 67000 Strasbourg, France
- Department of Pediatric Dentistry, University Hospital Strasbourg (HUS), 1 Place de l’Hôpital, 67000 Strasbourg, France
| | - Guoqiang Hua
- INSERM (French National Institute of Health and Medical Research) UMR 1260, Regenerative Nanomedicine, CRBS, 1 Rue Eugène Boeckel, 67000 Strasbourg, France; (F.B.); (F.C.); (G.H.); (Y.I.-G.); (L.K.); (G.F.D.G.); (D.O.); (R.S.); (Q.W.); (F.F.); (S.K.-B.); (L.G.); (O.H.)
- Faculty of Dental Surgery, University of Strasbourg, University Hospital Strasbourg (HUS), 8 Rue de Sainte Elisabeth, 67000 Strasbourg, France
| | - Ysia Idoux-Gillet
- INSERM (French National Institute of Health and Medical Research) UMR 1260, Regenerative Nanomedicine, CRBS, 1 Rue Eugène Boeckel, 67000 Strasbourg, France; (F.B.); (F.C.); (G.H.); (Y.I.-G.); (L.K.); (G.F.D.G.); (D.O.); (R.S.); (Q.W.); (F.F.); (S.K.-B.); (L.G.); (O.H.)
- Faculty of Dental Surgery, University of Strasbourg, University Hospital Strasbourg (HUS), 8 Rue de Sainte Elisabeth, 67000 Strasbourg, France
| | - Laetitia Keller
- INSERM (French National Institute of Health and Medical Research) UMR 1260, Regenerative Nanomedicine, CRBS, 1 Rue Eugène Boeckel, 67000 Strasbourg, France; (F.B.); (F.C.); (G.H.); (Y.I.-G.); (L.K.); (G.F.D.G.); (D.O.); (R.S.); (Q.W.); (F.F.); (S.K.-B.); (L.G.); (O.H.)
- Faculty of Dental Surgery, University of Strasbourg, University Hospital Strasbourg (HUS), 8 Rue de Sainte Elisabeth, 67000 Strasbourg, France
| | - Gabriel Fernandez De Grado
- INSERM (French National Institute of Health and Medical Research) UMR 1260, Regenerative Nanomedicine, CRBS, 1 Rue Eugène Boeckel, 67000 Strasbourg, France; (F.B.); (F.C.); (G.H.); (Y.I.-G.); (L.K.); (G.F.D.G.); (D.O.); (R.S.); (Q.W.); (F.F.); (S.K.-B.); (L.G.); (O.H.)
- Faculty of Dental Surgery, University of Strasbourg, University Hospital Strasbourg (HUS), 8 Rue de Sainte Elisabeth, 67000 Strasbourg, France
- Department of Pediatric Dentistry, University Hospital Strasbourg (HUS), 1 Place de l’Hôpital, 67000 Strasbourg, France
| | - Damien Offner
- INSERM (French National Institute of Health and Medical Research) UMR 1260, Regenerative Nanomedicine, CRBS, 1 Rue Eugène Boeckel, 67000 Strasbourg, France; (F.B.); (F.C.); (G.H.); (Y.I.-G.); (L.K.); (G.F.D.G.); (D.O.); (R.S.); (Q.W.); (F.F.); (S.K.-B.); (L.G.); (O.H.)
- Faculty of Dental Surgery, University of Strasbourg, University Hospital Strasbourg (HUS), 8 Rue de Sainte Elisabeth, 67000 Strasbourg, France
- Department of Pediatric Dentistry, University Hospital Strasbourg (HUS), 1 Place de l’Hôpital, 67000 Strasbourg, France
| | - Rana Smaida
- INSERM (French National Institute of Health and Medical Research) UMR 1260, Regenerative Nanomedicine, CRBS, 1 Rue Eugène Boeckel, 67000 Strasbourg, France; (F.B.); (F.C.); (G.H.); (Y.I.-G.); (L.K.); (G.F.D.G.); (D.O.); (R.S.); (Q.W.); (F.F.); (S.K.-B.); (L.G.); (O.H.)
- Faculty of Dental Surgery, University of Strasbourg, University Hospital Strasbourg (HUS), 8 Rue de Sainte Elisabeth, 67000 Strasbourg, France
| | - Quentin Wagner
- INSERM (French National Institute of Health and Medical Research) UMR 1260, Regenerative Nanomedicine, CRBS, 1 Rue Eugène Boeckel, 67000 Strasbourg, France; (F.B.); (F.C.); (G.H.); (Y.I.-G.); (L.K.); (G.F.D.G.); (D.O.); (R.S.); (Q.W.); (F.F.); (S.K.-B.); (L.G.); (O.H.)
- Faculty of Dental Surgery, University of Strasbourg, University Hospital Strasbourg (HUS), 8 Rue de Sainte Elisabeth, 67000 Strasbourg, France
| | - Florence Fioretti
- INSERM (French National Institute of Health and Medical Research) UMR 1260, Regenerative Nanomedicine, CRBS, 1 Rue Eugène Boeckel, 67000 Strasbourg, France; (F.B.); (F.C.); (G.H.); (Y.I.-G.); (L.K.); (G.F.D.G.); (D.O.); (R.S.); (Q.W.); (F.F.); (S.K.-B.); (L.G.); (O.H.)
- Faculty of Dental Surgery, University of Strasbourg, University Hospital Strasbourg (HUS), 8 Rue de Sainte Elisabeth, 67000 Strasbourg, France
- Department of Pediatric Dentistry, University Hospital Strasbourg (HUS), 1 Place de l’Hôpital, 67000 Strasbourg, France
| | - Sabine Kuchler-Bopp
- INSERM (French National Institute of Health and Medical Research) UMR 1260, Regenerative Nanomedicine, CRBS, 1 Rue Eugène Boeckel, 67000 Strasbourg, France; (F.B.); (F.C.); (G.H.); (Y.I.-G.); (L.K.); (G.F.D.G.); (D.O.); (R.S.); (Q.W.); (F.F.); (S.K.-B.); (L.G.); (O.H.)
- Faculty of Dental Surgery, University of Strasbourg, University Hospital Strasbourg (HUS), 8 Rue de Sainte Elisabeth, 67000 Strasbourg, France
| | - Georg Schulz
- Biomaterials Science Center, University of Basel, Gewerbestrasse 14, CH-4123 Allschwil, Switzerland; (G.S.); (B.M.)
| | - Wolfgang Wenzel
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Campus North, Building 640, DE-76131 Karlsruhe, Germany;
| | - Luca Gentile
- INSERM (French National Institute of Health and Medical Research) UMR 1260, Regenerative Nanomedicine, CRBS, 1 Rue Eugène Boeckel, 67000 Strasbourg, France; (F.B.); (F.C.); (G.H.); (Y.I.-G.); (L.K.); (G.F.D.G.); (D.O.); (R.S.); (Q.W.); (F.F.); (S.K.-B.); (L.G.); (O.H.)
- Faculty of Dental Surgery, University of Strasbourg, University Hospital Strasbourg (HUS), 8 Rue de Sainte Elisabeth, 67000 Strasbourg, France
| | - Laurent Risser
- Toulouse Institute of Mathematics, UMR 5219 University of Toulouse, CNRS UPS IMT, 31062 Toulouse, France;
| | - Bert Müller
- Biomaterials Science Center, University of Basel, Gewerbestrasse 14, CH-4123 Allschwil, Switzerland; (G.S.); (B.M.)
| | - Olivier Huck
- INSERM (French National Institute of Health and Medical Research) UMR 1260, Regenerative Nanomedicine, CRBS, 1 Rue Eugène Boeckel, 67000 Strasbourg, France; (F.B.); (F.C.); (G.H.); (Y.I.-G.); (L.K.); (G.F.D.G.); (D.O.); (R.S.); (Q.W.); (F.F.); (S.K.-B.); (L.G.); (O.H.)
- Faculty of Dental Surgery, University of Strasbourg, University Hospital Strasbourg (HUS), 8 Rue de Sainte Elisabeth, 67000 Strasbourg, France
- Department of Pediatric Dentistry, University Hospital Strasbourg (HUS), 1 Place de l’Hôpital, 67000 Strasbourg, France
| | - Nadia Benkirane-Jessel
- INSERM (French National Institute of Health and Medical Research) UMR 1260, Regenerative Nanomedicine, CRBS, 1 Rue Eugène Boeckel, 67000 Strasbourg, France; (F.B.); (F.C.); (G.H.); (Y.I.-G.); (L.K.); (G.F.D.G.); (D.O.); (R.S.); (Q.W.); (F.F.); (S.K.-B.); (L.G.); (O.H.)
- Faculty of Dental Surgery, University of Strasbourg, University Hospital Strasbourg (HUS), 8 Rue de Sainte Elisabeth, 67000 Strasbourg, France
- Department of Pediatric Dentistry, University Hospital Strasbourg (HUS), 1 Place de l’Hôpital, 67000 Strasbourg, France
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Whelan IT, Moeendarbary E, Hoey DA, Kelly DJ. Biofabrication of vasculature in microphysiological models of bone. Biofabrication 2021; 13. [PMID: 34034238 DOI: 10.1088/1758-5090/ac04f7] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 05/25/2021] [Indexed: 11/12/2022]
Abstract
Bone contains a dense network of blood vessels that are essential to its homoeostasis, endocrine function, mineral metabolism and regenerative functions. In addition, bone vasculature is implicated in a number of prominent skeletal diseases, and bone has high affinity for metastatic cancers. Despite vasculature being an integral part of bone physiology and pathophysiology, it is often ignored or oversimplified inin vitrobone models. However, 3D physiologically relevant vasculature can now be engineeredin vitro, with microphysiological systems (MPS) increasingly being used as platforms for engineering this physiologically relevant vasculature. In recent years, vascularised models of bone in MPSs systems have been reported in the literature, representing the beginning of a possible technological step change in how bone is modelledin vitro. Vascularised bone MPSs is a subfield of bone research in its nascency, however given the impact of MPSs has had inin vitroorgan modelling, and the crucial role of vasculature to bone physiology, these systems stand to have a substantial impact on bone research. However, engineering vasculature within the specific design restraints of the bone niche is significantly challenging given the different requirements for engineering bone and vasculature. With this in mind, this paper aims to serve as technical guidance for the biofabrication of vascularised bone tissue within MPS devices. We first discuss the key engineering and biological considerations for engineering more physiologically relevant vasculaturein vitrowithin the specific design constraints of the bone niche. We next explore emerging applications of vascularised bone MPSs, and conclude with a discussion on the current status of vascularised bone MPS biofabrication and suggest directions for development of next generation vascularised bone MPSs.
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Bessy T, Itkin T, Passaro D. Bioengineering the Bone Marrow Vascular Niche. Front Cell Dev Biol 2021; 9:645496. [PMID: 33996805 PMCID: PMC8113773 DOI: 10.3389/fcell.2021.645496] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/23/2021] [Indexed: 01/01/2023] Open
Abstract
The bone marrow (BM) tissue is the main physiological site for adult hematopoiesis. In recent years, the cellular and matrix components composing the BM have been defined with unprecedent resolution, both at the molecular and structural levels. With the expansion of this knowledge, the possibility of reproducing a BM-like structure, to ectopically support and study hematopoiesis, becomes a reality. A number of experimental systems have been implemented and have displayed the feasibility of bioengineering BM tissues, supported by cells of mesenchymal origin. Despite being known as an abundant component of the BM, the vasculature has been largely disregarded for its role in regulating tissue formation, organization and determination. Recent reports have highlighted the crucial role for vascular endothelial cells in shaping tissue development and supporting steady state, emergency and malignant hematopoiesis, both pre- and postnatally. Herein, we review the field of BM-tissue bioengineering with a particular focus on vascular system implementation and integration, starting from describing a variety of applicable in vitro models, ending up with in vivo preclinical models. Additionally, we highlight the challenges of the field and discuss the clinical perspectives in terms of adoptive transfer of vascularized BM-niche grafts in patients to support recovering hematopoiesis.
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Affiliation(s)
- Thomas Bessy
- Leukemia and Niche Dynamics Laboratory, Université de Paris, Institut Cochin, Institut National de la Santé et de la Recherche Médicale, Centre National de la Recherche Scientifique, Paris, France
| | - Tomer Itkin
- Division of Regenerative Medicine, Ansary Stem Cell Institute, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Diana Passaro
- Leukemia and Niche Dynamics Laboratory, Université de Paris, Institut Cochin, Institut National de la Santé et de la Recherche Médicale, Centre National de la Recherche Scientifique, Paris, France
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Vascular Endothelial Growth Factor and Mesenchymal Stem Cells Revealed Similar Bone Formation to Allograft in a Sheep Model. BIOMED RESEARCH INTERNATIONAL 2021; 2021:6676609. [PMID: 33763484 PMCID: PMC7946458 DOI: 10.1155/2021/6676609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 02/07/2021] [Accepted: 02/25/2021] [Indexed: 01/08/2023]
Abstract
Introduction Mesenchymal stem cells (MSCs) and vascular endothelial growth factor (VEGF) are key factors in bone regeneration. Further stimulation should establish an enhanced cell environment optimal for vessel evolvement and hereby being able to attract bone-forming cells. The aim of this study was to generate new bone by using MSCs and VEGF, being able to stimulate growth equal to allograft. Methods Eight Texel/Gotland sheep had four titanium implants in a size of 10 × 12 mm inserted into bilateral distal femurs, containing a 2 mm gap. In the gap, autologous 3 × 106 MSCs seeded on hydroxyapatite (HA) granules in combination with 10 ng, 100 ng, and 500 ng VEGF release/day were added. After 12 weeks, the implant-bone blocks were harvested, embedded, and sectioned for histomorphometric analysis. Bone formation and mechanical fixation were evaluated. Blood samples were collected for the determination of bone-related biomarkers and VEGF in serum at weeks 0, 1, 4, 8, and 12. Results The combination of 3 × 106 MSCs with 10 ng, 100 ng, and 500 ng VEGF release/day exhibited similar amount of bone formation within the gap as allograft (P > 0.05). Moreover, no difference in mechanical fixation was observed between the groups (P > 0.05). Serum biomarkers showed no significant difference compared to baseline (all P > 0.05). Conclusion MSCs and VEGF exhibit significant bone regeneration, and their bone properties equal to allograft, with no systemic increase in osteogenic markers or VEGF with no visible side effects. This study indicates a possible new approach into solving the problem of insufficient allograft, in larger bone defects.
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Kim H, Kumbar SG, Nukavarapu SP. Biomaterial-directed cell behavior for tissue engineering. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2021; 17:100260. [PMID: 33521410 PMCID: PMC7839921 DOI: 10.1016/j.cobme.2020.100260] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Successful tissue regeneration strategies focus on the use of novel biomaterials, structures, and a variety of cues to control cell behavior and promote regeneration. Studies discovered how biomaterial/ structure cues in the form of biomaterial chemistry, material stiffness, surface topography, pore, and degradation properties play an important role in controlling cellular events in the contest of in vitro and in vivo tissue regeneration. Advanced biomaterials structures and strategies are developed to focus on the delivery of bioactive factors, such as proteins, peptides, and even small molecules to influence cell behavior and regeneration. The present article is an effort to summarize important findings and further discuss biomaterial strategies to influence and control cell behavior directly via physical and chemical cues. This article also touches on various modern methods in biomaterials processing to include bioactive factors as signaling cues to program cell behavior for tissue engineering and regenerative medicine.
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Affiliation(s)
- Hyun Kim
- Biomedical Engineering, University of Connecticut, Storrs-06269
| | - Sangamesh G. Kumbar
- Biomedical Engineering, University of Connecticut, Storrs-06269
- Materials Science & Engineering, University of Connecticut, Storrs-06269
- Orthopaedic Surgery, University of Connecticut Health, Farmington-06030
| | - Syam P. Nukavarapu
- Biomedical Engineering, University of Connecticut, Storrs-06269
- Materials Science & Engineering, University of Connecticut, Storrs-06269
- Orthopaedic Surgery, University of Connecticut Health, Farmington-06030
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Zhang R, Liu Y, Qi Y, Zhao Y, Nie G, Wang X, Zheng S. Self-assembled peptide hydrogel scaffolds with VEGF and BMP-2 enhanced in vitro angiogenesis and osteogenesis. Oral Dis 2021; 28:723-733. [PMID: 33512051 DOI: 10.1111/odi.13785] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 01/16/2021] [Accepted: 01/24/2021] [Indexed: 12/31/2022]
Abstract
OBJECTIVES The reconstruction of bone defects remains a major clinical issue. Our study aims to investigate the ability of RATEA16 (RA, [CH3CONH] RADARADARADARADA-[CONH2]) for the sustained delivering VEGF and BMP-2 to promote angiogenesis and osteogenesis in bone reconstruction. MATERIALS AND METHODS We prepared and investigated the characterization of RATEA16. The survival of human umbilical vein endothelial cells (HUVECs) and human stem cells of the apical papilla (SCAPs) encapsulated in RATEA16 hydrogel was detected. Then, we established RA-VEGF/BMP-2 drug delivery systems and measured their drug release pattern. The effects of RA-VEGF scaffolds on HUVECs angiogenesis were investigated in vitro. Then, osteoblastic differentiation capacity of SCAPs with RA-BMP-2 scaffolds was analyzed by ALP activity and expression of osteoblast-related genes. RESULTS A porous nanofiber microstructure endowed this scaffold with the ability to maintain the survival of HUVECs and SCAPs. The RA-VEGF/BMP-2 drug delivery systems exhibited several advantagesin vitro: injectability, biodegradability, good biocompatibility, and noncytotoxicity. Released rhVEGF165 /BMP-2 were proved to promote angiogenesis of HUVECs as well as osteogenesis of SCAPs abilities. CONCLUSION RATEA16 loading with VEGF and BMP-2 might be a potential clinical strategy for tissue engineering, especially in bone reconstruction, due to its ability of delivering growth factors effectively and efficiently.
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Affiliation(s)
- Ruijuan Zhang
- Department of Preventive Dentistry, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, PR China
| | - Yang Liu
- Department of Preventive Dentistry, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, PR China
| | - Yingqiu Qi
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, PR China
| | - Ying Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, PR China
| | - Guangjun Nie
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, PR China
| | - Xiaozhe Wang
- Department of Preventive Dentistry, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, PR China
| | - Shuguo Zheng
- Department of Preventive Dentistry, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, PR China
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Li Y, Hoffman MD, Benoit DSW. Matrix metalloproteinase (MMP)-degradable tissue engineered periosteum coordinates allograft healing via early stage recruitment and support of host neurovasculature. Biomaterials 2021; 268:120535. [PMID: 33271450 PMCID: PMC8110201 DOI: 10.1016/j.biomaterials.2020.120535] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 10/17/2020] [Accepted: 11/06/2020] [Indexed: 12/15/2022]
Abstract
Despite serving as the clinical "gold standard" treatment for critical size bone defects, decellularized allografts suffer from long-term failure rates of ~60% due to the absence of the periosteum. Stem and osteoprogenitor cells within the periosteum orchestrate autograft healing through host cell recruitment, which initiates the regenerative process. To emulate periosteum-mediated healing, tissue engineering approaches have been utilized with mixed outcomes. While vascularization has been widely established as critical for bone regeneration, innervation was recently identified to be spatiotemporally regulated together with vascularization and similarly indispensable to bone healing. Notwithstanding, there are no known approaches that have focused on periosteal matrix cues to coordinate host vessel and/or axon recruitment. Here, we investigated the influence of hydrogel degradation mechanism, i.e. hydrolytic or enzymatic (cell-dictated), on tissue engineered periosteum (TEP)-modified allograft healing, especially host vessel/nerve recruitment and integration. Matrix metalloproteinase (MMP)-degradable hydrogels supported endothelial cell migration from encapsulated spheroids whereas no migration was observed in hydrolytically degradable hydrogels in vitro, which correlated with increased neurovascularization in vivo. Specifically, ~2.45 and 1.84-fold, and ~3.48 and 2.58-fold greater vessel and nerve densities with high levels of vessel and nerve co-localization was observed using MMP degradable TEP (MMP-TEP) -modified allografts versus unmodified and hydrolytically degradable TEP (Hydro-TEP)-modified allografts, respectively, at 3 weeks post-surgery. MMP-TEP-modified allografts exhibited greater longitudinal graft-localized vascularization and endochondral ossification, along with 4-fold and 2-fold greater maximum torques versus unmodified and Hydro-TEP-modified allografts after 9 weeks, respectively, which was comparable to that of autografts. In summary, our results demonstrated that the MMP-TEP coordinated allograft healing via early stage recruitment and support of host neurovasculature.
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Affiliation(s)
- Yiming Li
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, USA; Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA.
| | - Michael D Hoffman
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, USA; Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA.
| | - Danielle S W Benoit
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, USA; Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA; Department of Environmental Medicine, University of Rochester Medical Center, Rochester, NY, USA; Materials Science Program, University of Rochester, Rochester, NY, USA; Department of Chemical Engineering, University of Rochester, Rochester, NY, USA; Department of Biomedical Genetics and Center for Oral Biology, University of Rochester Medical Center, Rochester, NY, USA.
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Migliorini E, Guevara-Garcia A, Albiges-Rizo C, Picart C. Learning from BMPs and their biophysical extracellular matrix microenvironment for biomaterial design. Bone 2020; 141:115540. [PMID: 32730925 PMCID: PMC7614069 DOI: 10.1016/j.bone.2020.115540] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 07/17/2020] [Accepted: 07/18/2020] [Indexed: 01/19/2023]
Abstract
It is nowadays well-accepted that the extracellular matrix (ECM) is not a simple reservoir for growth factors but is an organization center of their biological activity. In this review, we focus on the ability of the ECM to regulate the biological activity of BMPs. In particular, we survey the role of the ECM components, notably the glycosaminoglycans and fibrillary ECM proteins, which can be promoters or repressors of the biological activities mediated by the BMPs. We examine how a process called mechano-transduction induced by the ECM can affect BMP signaling, including BMP internalization by the cells. We also focus on the spatio-temporal regulation of the BMPs, including their release from the ECM, which enables to modulate their spatial localization as well as their local concentration. We highlight how biomaterials can recapitulate some aspects of the BMPs/ECM interactions and help to answer fundamental questions to reveal previously unknown molecular mechanisms. Finally, the design of new biomaterials inspired by the ECM to better present BMPs is discussed, and their use for a more efficient bone regeneration in vivo is also highlighted.
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Affiliation(s)
- Elisa Migliorini
- CNRS, Grenoble Institute of Technology, LMGP, UMR 5628, 3 Parvis Louis Néel, 38016 Grenoble, France; CEA, Institute of Interdisciplinary Research of Grenoble (IRIG), Biomimetism and Regenerative Medicine Lab, ERL 5000, Université Grenoble-Alpes (UGA)/CEA/CNRS, Grenoble France.
| | - Amaris Guevara-Garcia
- CNRS, Grenoble Institute of Technology, LMGP, UMR 5628, 3 Parvis Louis Néel, 38016 Grenoble, France; CEA, Institute of Interdisciplinary Research of Grenoble (IRIG), Biomimetism and Regenerative Medicine Lab, ERL 5000, Université Grenoble-Alpes (UGA)/CEA/CNRS, Grenoble France; Université Grenoble Alpes, Institut for Advances Biosciences, Institute Albert Bonniot, INSERM U1209, CNRS 5309, La Tronche, France
| | - Corinne Albiges-Rizo
- Université Grenoble Alpes, Institut for Advances Biosciences, Institute Albert Bonniot, INSERM U1209, CNRS 5309, La Tronche, France
| | - Catherine Picart
- CNRS, Grenoble Institute of Technology, LMGP, UMR 5628, 3 Parvis Louis Néel, 38016 Grenoble, France; CEA, Institute of Interdisciplinary Research of Grenoble (IRIG), Biomimetism and Regenerative Medicine Lab, ERL 5000, Université Grenoble-Alpes (UGA)/CEA/CNRS, Grenoble France.
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Dhavalikar P, Robinson A, Lan Z, Jenkins D, Chwatko M, Salhadar K, Jose A, Kar R, Shoga E, Kannapiran A, Cosgriff-Hernandez E. Review of Integrin-Targeting Biomaterials in Tissue Engineering. Adv Healthc Mater 2020; 9:e2000795. [PMID: 32940020 PMCID: PMC7960574 DOI: 10.1002/adhm.202000795] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 08/27/2020] [Indexed: 12/12/2022]
Abstract
The ability to direct cell behavior has been central to the success of numerous therapeutics to regenerate tissue or facilitate device integration. Biomaterial scientists are challenged to understand and modulate the interactions of biomaterials with biological systems in order to achieve effective tissue repair. One key area of research investigates the use of extracellular matrix-derived ligands to target specific integrin interactions and induce cellular responses, such as increased cell migration, proliferation, and differentiation of mesenchymal stem cells. These integrin-targeting proteins and peptides have been implemented in a variety of different polymeric scaffolds and devices to enhance tissue regeneration and integration. This review first presents an overview of integrin-mediated cellular processes that have been identified in angiogenesis, wound healing, and bone regeneration. Then, research utilizing biomaterials are highlighted with integrin-targeting motifs as a means to direct these cellular processes to enhance tissue regeneration. In addition to providing improved materials for tissue repair and device integration, these innovative biomaterials provide new tools to probe the complex processes of tissue remodeling in order to enhance the rational design of biomaterial scaffolds and guide tissue regeneration strategies.
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Affiliation(s)
- Prachi Dhavalikar
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Andrew Robinson
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Ziyang Lan
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Dana Jenkins
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Malgorzata Chwatko
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Karim Salhadar
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Anupriya Jose
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Ronit Kar
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Erik Shoga
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
| | - Aparajith Kannapiran
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, 78712, USA
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Liang B, Shi Q, Xu J, Chai YM, Xu JG. Poly (Glycerol Sebacate)-Based Bio-Artificial Multiporous Matrix for Bone Regeneration. Front Chem 2020; 8:603577. [PMID: 33330398 PMCID: PMC7719816 DOI: 10.3389/fchem.2020.603577] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 10/26/2020] [Indexed: 12/13/2022] Open
Abstract
In recent years, bone repair biomaterials that combine cells and bioactive factors are superior to autologous and allogeneic bone implants. However, neither natural nor synthetic biomaterials can possess all desired qualities such as strength, porosity, and biological activity. In this study, we used poly (glycerol sebacate) (PGS), a synthetic material with great osteogenic potential that has attracted more attention in the field of tissue (such as bone tissue) regeneration owing to its good biocompatibility and high elasticity. It also has the advantage of being regulated by material synthesis to match the bone tissue's strength and can be easily modified to become functional. However, pure PGS lacks functional groups and hydrophilicity. Therefore, we used PGS as the substrate to graft the adhesive ligands RGD and vascular endothelial growth factor mimetic peptide. The bone repair scaffold can be prepared through photo crosslinking, as it not only improves hydrophobicity but also promotes vascularization and accelerates osteogenesis. Simultaneously, we improved the preparation method of hydrogels after freeze-drying and crosslinking to form a sponge-like structure and to easily regenerate blood vessels. In summary, a bone repair scaffold was prepared to meet the structural and biological requirements. It proved to serve as a potential bone-mimicking scaffold by enhancing tissue regenerative processes such as cell infiltration and vascularization and subsequent replacement by the native bone tissue.
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Affiliation(s)
| | | | | | | | - Jian-Guang Xu
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
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Chopra V, Thomas J, Sharma A, Panwar V, Kaushik S, Sharma S, Porwal K, Kulkarni C, Rajput S, Singh H, Jagavelu K, Chattopadhyay N, Ghosh D. Synthesis and Evaluation of a Zinc Eluting rGO/Hydroxyapatite Nanocomposite Optimized for Bone Augmentation. ACS Biomater Sci Eng 2020; 6:6710-6725. [DOI: 10.1021/acsbiomaterials.0c00370] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Vianni Chopra
- Institute of Nanoscience and Technology, Habitat Centre, Sector 64, Phase 10., Mohali 160062, Punjab, India
| | - Jijo Thomas
- Institute of Nanoscience and Technology, Habitat Centre, Sector 64, Phase 10., Mohali 160062, Punjab, India
| | - Anjana Sharma
- Institute of Nanoscience and Technology, Habitat Centre, Sector 64, Phase 10., Mohali 160062, Punjab, India
| | - Vineeta Panwar
- Institute of Nanoscience and Technology, Habitat Centre, Sector 64, Phase 10., Mohali 160062, Punjab, India
| | - Swati Kaushik
- Institute of Nanoscience and Technology, Habitat Centre, Sector 64, Phase 10., Mohali 160062, Punjab, India
| | - Shivani Sharma
- Division of Endocrinology, CSIR-Central Drug Research Institute, Council of Scientific and Industrial Researchs, Lucknow 226031, U.P., India
| | - Konica Porwal
- Division of Endocrinology, CSIR-Central Drug Research Institute, Council of Scientific and Industrial Researchs, Lucknow 226031, U.P., India
| | - Chirag Kulkarni
- Division of Endocrinology, CSIR-Central Drug Research Institute, Council of Scientific and Industrial Researchs, Lucknow 226031, U.P., India
| | - Swati Rajput
- Division of Endocrinology, CSIR-Central Drug Research Institute, Council of Scientific and Industrial Researchs, Lucknow 226031, U.P., India
| | - Himalaya Singh
- Pharmacology Division, CSIR- Central Drug Research Institute Council of Scientific and Industrial Research, Lucknow 226031, U.P., India
| | - Kumaravelu Jagavelu
- Pharmacology Division, CSIR- Central Drug Research Institute Council of Scientific and Industrial Research, Lucknow 226031, U.P., India
| | - Naibedya Chattopadhyay
- Division of Endocrinology, CSIR-Central Drug Research Institute, Council of Scientific and Industrial Researchs, Lucknow 226031, U.P., India
| | - Deepa Ghosh
- Institute of Nanoscience and Technology, Habitat Centre, Sector 64, Phase 10., Mohali 160062, Punjab, India
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Zheng Y, Wang J, Chang B, Zhang L. Clinical study on repair of metacarpal bone defects using titanium alloy implantation and autologous bone grafting. Exp Ther Med 2020; 20:233. [PMID: 33149787 PMCID: PMC7604737 DOI: 10.3892/etm.2020.9363] [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: 04/22/2019] [Accepted: 10/11/2019] [Indexed: 12/04/2022] Open
Abstract
Due to various limitations in the use of autologous bone and allogeneic bone in the repair of bone defects, the use of synthetic bone graft substitute has become a hot topic in orthopedic surgery and repair medicine. A total of 53 patients treated for trauma-induced metacarpal bone defects were recruited. These patients were divided into the TiAl6V4 titanium alloy implantation group (group A) and the autologous bone graft group (group B). The symptoms of patients in the two groups were closely observed and followed up. The operation time, time to bone fusion, post-surgical pain [visual analog scale (VAS) scores], hand function recovery [total active flexion scale (TAFS) scores] and complications were compared between the two groups. Following surgery, none of the patients had necrosis of fingers or bone non-union. The recovery was rated as excellent and good in up to 91.6% of patients, indicating high clinical efficacy. Compared with the use of autologous bone grafting as the gold standard (group B), there was no significant difference in the excellent and good recovery rate based on TAFS scores at 16 weeks after surgery (91.7 vs. 89.7%, P>0.05), and there was also no significant difference in the incidence of post-operative complications (33.3 vs. 41.3%, P>0.05). The operation time (82.08±6.64 min), time to bone fusion (7.75±1.73 weeks) and VAS scores at 3 days after surgery were all significantly lower in group A than in group B (P<0.05). The values of group B were 104.69±8.63 min, 9.17±2.78 weeks and [5(5, 6)], respectively. However, the hospitalization cost (22,657.8±1,595.4Ұ) was significantly higher than that in group B (14,808.2±2,291.3Ұ; P<0.05). In conclusion, the use of titanium alloy implantation may avoid new injury to the donor site, reduce the operation time and post-operative pain and accelerate bone fusion. Therefore, this method is worthy of popularization for defective bone reconstruction and recovery in the clinic.
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Affiliation(s)
- Yue Zheng
- Department of Orthopedics, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
| | - Jinliang Wang
- Department of Orthopedics, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
| | - Bolun Chang
- Department of Orthopedics, Hebei Provincial Hospital of Traditional Chinese Medicine, Shijiazhuang, Hebei 050011, P.R. China
| | - Li Zhang
- Department of Orthopedics, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
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The effect of polyethylenglycol gel on the delivery and osteogenic differentiation of homologous tooth germ-derived stem cells in a porcine model. Clin Oral Investig 2020; 25:3043-3057. [PMID: 33104929 DOI: 10.1007/s00784-020-03625-6] [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: 04/06/2020] [Accepted: 10/07/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVES The aim of this study was to investigate if bone regeneration can be promoted by homologous transplantation of STRO-1 sorted (STRO-1+) porcine tooth germ mesenchymal stem cells (TGSCs) with the combination of polyethylenglycol (PEG)-based hydrogel and biphasic calcium phosphate (BCP) scaffolds. MATERIAL AND METHODS TGSCs were isolated from impacted third molars of domestic pigs. Nine critical-sized defects were created as (1) untreated defect; filled with (2) autogenous bone; (3) BCP + PEG; (4) BCP + PEG + unsorted TGSCs; (5) BCP + unsorted TGSCs; (6) BCP + PEG + STRO-1-sorted TGSCs; (7) BCP + STRO-1-sorted TGSCs; (8) BCP + PEG + osteogenic induced unsorted TGSCs; and (9) BCP + PEG + osteogenic induced STRO-1-sorted TGSCs in 20 domestic pigs. CM-DiI labelling was used to track cells in vivo. Histomorphometric assessment of new bone formation was achieved by toluidine blue O staining and microradiography after 1, 2, 4 and 12 weeks posttransplantation. RESULTS Complete healing was achieved in all defects although defects with PEG hydrogel presented better bone formation while STRO-1+ and unsorted TGSCs showed similar ability to form new bone after 12 weeks. Transplanted cells were seen in defects where PEG hydrogel was used as carriers in contrast to defects treated with cells and only bone grafts. CONCLUSIONS PEG hydrogel is an efficient carrier for homologous stem cell transplantation. TGSCs are capable of promoting bone healing in critical-sized defects in combination with bone graft and PEG hydrogel. CLINICAL RELEVANCE This study provides information about the importance of the delivery vehicle for future translational stem cell delivery approaches.
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Sefkow-Werner J, Machillot P, Sales A, Castro-Ramirez E, Degardin M, Boturyn D, Cavalcanti-Adam EA, Albiges-Rizo C, Picart C, Migliorini E. Heparan sulfate co-immobilized with cRGD ligands and BMP2 on biomimetic platforms promotes BMP2-mediated osteogenic differentiation. Acta Biomater 2020; 114:90-103. [PMID: 32673751 DOI: 10.1016/j.actbio.2020.07.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 07/06/2020] [Accepted: 07/08/2020] [Indexed: 12/27/2022]
Abstract
The chemical and physical properties of the extracellular matrix (ECM) are known to be fundamental for regulating growth factor bioactivity. The role of heparan sulfate (HS), a glycosaminoglycan, and of cell adhesion proteins (containing the cyclic RGD (cRGD) ligands) on bone morphogenetic protein 2 (BMP2)-mediated osteogenic differentiation has not been fully explored. In particular, it is not known whether and how their effects can be potentiated when they are presented in controlled close proximity, as in the ECM. Here, we developed streptavidin platforms to mimic selective aspects of the in vivo presentation of cRGD, HS and BMP2, with a nanoscale-control of their surface density and orientation to study cell adhesion and osteogenic differentiation. We showed that whereas a controlled increase in cRGD surface concentration upregulated BMP2 signaling due to β3 integrin recruitment, silencing either β1 or β3 integrins negatively affected BMP2-mediated phosphorylation of SMAD1/5/9 and alkaline phosphatase expression. Furthermore, the presence of adsorbed BMP2 promoted cellular adhesion at very low cRGD concentrations. Finally, we proved that HS co-immobilized with cRGD both sustained BMP2 signaling and enhanced osteogenic differentiation compared to BMP2 directly immobilized on streptavidin, even with a low cRGD surface concentration. Altogether, our results show that HS facilitated and sustained the synergy between BMP2 and integrin pathways and that the co-immobilization of HS and cRGD peptides optimised BMP2-mediated osteogenic differentiation. Statement of significance The growth factor BMP2 is used to treat large bone defects. Previous studies have shown that the presentation of BMP2 via extracellular matrix molecules, such as heparan sulfate (HS), can upregulate BMP2 signaling. The potential advantages of dose reduction and local specificity have stimulated interest in further investigations into biomimetic approaches. We designed a streptavidin model surface eligible for immobilizing tunable amounts of molecules from the extracellular space, such as HS, adhesion motifs (cyclic RGD) and BMP2. By studying cellular adhesion, BMP2 bioactivity and its osteogenic potential we reveal the combined effect of integrins, HS and BMP2, which contribute in answering fundamental questions regarding cell-matrix interaction.
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Xia K, Chen Z, Chen J, Xu H, Xu Y, Yang T, Zhang Q. RGD- and VEGF-Mimetic Peptide Epitope-Functionalized Self-Assembling Peptide Hydrogels Promote Dentin-Pulp Complex Regeneration. Int J Nanomedicine 2020; 15:6631-6647. [PMID: 32982223 PMCID: PMC7495350 DOI: 10.2147/ijn.s253576] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 07/15/2020] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION Cell-based tissue engineering is a promising method for dentin-pulp complex (DPC) regeneration. The challenges associated with DPC regeneration include the generation of a suitable microenvironment that facilitates the complete odontogenic differentiation of dental pulp stem cells (DPSCs) and the rapid induction of angiogenesis. Thus, the survival and subsequent differentiation of DPSCs are limited. Extracellular matrix (ECM)-like biomimetic hydrogels composed of self-assembling peptides (SAPs) were developed to provide an appropriate microenvironment for DPSCs. For functional DPC regeneration, the most important considerations are to provide an environment that promotes the adequate attachment of DPSCs and rapid vascularization of the regenerating pulp. Morphogenic signals in the form of growth factors (GFs) have been incorporated into SAPs to promote productive DPSC behaviors. However, the use of GFs has several drawbacks. We envision using a scaffold with SAPs coupled with long-term factors to increase DPSC attachment and vascularization as a method to address this challenge. METHODS In this study, we developed synthetic material for an SAP-based scaffold with RGD- and vascular endothelial growth factor (VEGF)-mimetic peptide epitopes with the dual functions of dentin and pulp regeneration. DPSCs and human umbilical vein endothelial cells (HUVECs) were used to evaluate the biological effects of SAP-based scaffolds. Furthermore, the pulpotomized molar rat model was employed to test the reparative and regenerative effects of SAP-based scaffolds. RESULTS This scaffold simultaneously presented RGD- and VEGF-mimetic peptide epitopes and provided a 3D microenvironment for DPSCs. DPSCs grown on this composite scaffold exhibited significantly improved survival and angiogenic and odontogenic differentiation in the multifunctionalized group in vitro. Histological and functional evaluations of a partially pulpotomized rat model revealed that the multifunctionalized scaffold was superior to other options with respect to stimulating pulp recovery and dentin regeneration in vivo. CONCLUSION Based on our data obtained with the functionalized SAP scaffold, a 3D microenvironment that supports stem cell adhesion and angiogenesis was generated that has great potential for dental pulp tissue engineering and regeneration.
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Affiliation(s)
- Kun Xia
- Department of Endodontics, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai200072, People’s Republic of China
- Department of Preventive Dentistry, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou325027, People’s Republic of China
| | - Zhuo Chen
- Department of Endodontics, The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou310006, People’s Republic of China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou310006, People’s Republic of China
| | - Jie Chen
- Department of Endodontics, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai200072, People’s Republic of China
| | - Huaxing Xu
- Department of Endodontics, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai200072, People’s Republic of China
| | - Yunfei Xu
- Department of Endodontics, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai200072, People’s Republic of China
| | - Ting Yang
- Department of Endodontics, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai200072, People’s Republic of China
| | - Qi Zhang
- Department of Endodontics, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai200072, People’s Republic of China
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Tran HD, Park KD, Ching YC, Huynh C, Nguyen DH. A comprehensive review on polymeric hydrogel and its composite: Matrices of choice for bone and cartilage tissue engineering. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.06.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Menger MM, Laschke MW, Orth M, Pohlemann T, Menger MD, Histing T. Vascularization Strategies in the Prevention of Nonunion Formation. TISSUE ENGINEERING PART B-REVIEWS 2020; 27:107-132. [PMID: 32635857 DOI: 10.1089/ten.teb.2020.0111] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Delayed healing and nonunion formation are major challenges in orthopedic surgery, which require the development of novel treatment strategies. Vascularization is considered one of the major prerequisites for successful bone healing, providing an adequate nutrient supply and allowing the infiltration of progenitor cells to the fracture site. Hence, during the last decade, a considerable number of studies have focused on the evaluation of vascularization strategies to prevent or to treat nonunion formation. These involve (1) biophysical applications, (2) systemic pharmacological interventions, and (3) tissue engineering, including sophisticated scaffold materials, local growth factor delivery systems, cell-based techniques, and surgical vascularization approaches. Accumulating evidence indicates that in nonunions, these strategies are indeed capable of improving the process of bone healing. The major challenge for the future will now be the translation of these strategies into clinical practice to make them accessible for the majority of patients. If this succeeds, these vascularization strategies may markedly reduce the incidence of nonunion formation. Impact statement Delayed healing and nonunion formation are a major clinical problem in orthopedic surgery. This review provides an overview of vascularization strategies for the prevention and treatment of nonunions. The successful translation of these strategies in clinical practice is of major importance to achieve adequate bone healing.
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Affiliation(s)
- Maximilian M Menger
- Department of Trauma, Hand and Reconstructive Surgery, Saarland University, Homburg, Germany
| | - Matthias W Laschke
- Institute for Clinical & Experimental Surgery, Saarland University, Homburg, Germany
| | - Marcel Orth
- Department of Trauma, Hand and Reconstructive Surgery, Saarland University, Homburg, Germany
| | - Tim Pohlemann
- Department of Trauma, Hand and Reconstructive Surgery, Saarland University, Homburg, Germany
| | - Michael D Menger
- Institute for Clinical & Experimental Surgery, Saarland University, Homburg, Germany
| | - Tina Histing
- Department of Trauma, Hand and Reconstructive Surgery, Saarland University, Homburg, Germany
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