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Kohyama K, Kato H, Okada H, Ishihara T, Yasue Y, Kamidani R, Suzuki K, Miyake T, Okuda H, Shibata H, Tomita H, Ogawa T. Concomitant heparin use promotes skin graft donor site healing by basic fibroblast growth factor: A pilot prospective randomized controlled study. Contemp Clin Trials Commun 2024; 42:101375. [PMID: 39398328 PMCID: PMC11470421 DOI: 10.1016/j.conctc.2024.101375] [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: 07/07/2024] [Revised: 09/14/2024] [Accepted: 09/21/2024] [Indexed: 10/15/2024] Open
Abstract
Owing to its mitogenic and angiogenic characteristics, the use of basic fibroblast growth factor (bFGF) to promote wound healing has been investigated. However, its clinical efficacy has fallen short of expectations due to its instability. Heparin has been reported to stabilize bFGF. Therefore, we hypothesized that the combination of these agents would more effectively promote wound healing than bFGF alone; a single-center, two-arm parallel, single-blind, and a prospective randomized controlled pilot study was therefore performed involving 12 patients who underwent split-thickness skin graft harvesting. To ensure a feasible clinical treatment model, commercially available agents were used. The patients were randomly assigned to either the control group treated with bFGF (n = 6) or the intervention group treated with bFGF and heparin (n = 6) in a 1:1 ratio. The wound area and the wound area variation was assessed each week postoperatively, as was the number of days required for epithelialization. As a supplementary analysis, the least-squares means were calculated using a linear mixed-effects model. The results of this study indicate that the combination of bFGF and heparin may more effectively promote wound healing than bFGF alone, consistent with our hypothesis. A multicenter trial based on these data is ongoing.
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Affiliation(s)
- Keishi Kohyama
- Department of Plastic and Reconstructive Surgery, Gifu University Hospital, Gifu, Japan
| | - Hisakazu Kato
- Department of Plastic and Reconstructive Surgery, Gifu University Hospital, Gifu, Japan
| | - Hideshi Okada
- Department of Emergency and Disaster Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
- Center for One Medicine Innovative Translational Research, Gifu University Institute for Advanced Study, Gifu, Japan
| | - Takuma Ishihara
- Innovative and Clinical Research Promotion Center, Gifu University Hospital, Gifu, Japan
| | - Yuji Yasue
- Department of Plastic and Reconstructive Surgery, Gifu University Hospital, Gifu, Japan
| | - Ryo Kamidani
- Department of Emergency and Disaster Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kodai Suzuki
- Department of Emergency and Disaster Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
- Department of Infection Control, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takahito Miyake
- Department of Emergency and Disaster Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hiroshi Okuda
- Department of Otolaryngology-Head and Neck Surgery, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hirofumi Shibata
- Department of Otolaryngology-Head and Neck Surgery, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hiroyuki Tomita
- Center for One Medicine Innovative Translational Research, Gifu University Institute for Advanced Study, Gifu, Japan
- Department of Tumor Pathology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takenori Ogawa
- Department of Otolaryngology-Head and Neck Surgery, Gifu University Graduate School of Medicine, Gifu, Japan
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2
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Huang F, Gao T, Feng Y, Xie Y, Tai C, Huang Y, Ling L, Wang B. Bioinspired Collagen Scaffold Loaded with bFGF-Overexpressing Human Mesenchymal Stromal Cells Accelerating Diabetic Skin Wound Healing via HIF-1 Signal Pathway Regulated Neovascularization. ACS APPLIED MATERIALS & INTERFACES 2024; 16:45989-46004. [PMID: 39165237 PMCID: PMC11378764 DOI: 10.1021/acsami.4c08174] [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: 08/22/2024]
Abstract
The healing of severe chronic skin wounds in chronic diabetic patients is still a huge clinical challenge due to complex regeneration processes and control signals. Therefore, a single approach is difficult in obtaining satisfactory therapeutic efficacy for severe diabetic skin wounds. In this study, we adopted a composite strategy for diabetic skin wound healing. First, we fabricated a collagen-based biomimetic skin scaffold. The human basic fibroblast growth factor (bFGF) gene was electrically transduced into human umbilical cord mesenchymal stromal cells (UC-MSCs), and the stable bFGF-overexpressing UC-MSCs (bFGF-MSCs) clones were screened out. Then, an inspired collagen scaffold loaded with bFGF-MSCs was applied to treat full-thickness skin incision wounds in a streptozotocin-induced diabetic rat model. The mechanism of skin damage repair in diabetes mellitus was investigated using RNA-Seq and Western blot assays. The bioinspired collagen scaffold demonstrated good biocompatibility for skin-regeneration-associated cells such as human fibroblast (HFs) and endothelial cells (ECs). The bioinspired collagen scaffold loaded with bFGF-MSCs accelerated the diabetic full-thickness incision wound healing including cell proliferation enhancement, collagen deposition, and re-epithelialization, compared with other treatments. We also showed that the inspired skin scaffold could enhance the in vitro tube formation of ECs and the early angiogenesis process of the wound tissue in vivo. Further findings revealed enhanced angiogenic potential in ECs stimulated by bFGF-MSCs, evidenced by increased AKT phosphorylation and elevated HIF-1α and HIF-1β levels, indicating the activation of HIF-1 pathways in diabetic wound healing. Based on the superior biocompatibility and bioactivity, the novel bioinspired skin healing materials composed of the collagen scaffold and bFGF-MSCs will be promising for healing diabetic skin wounds and even other refractory tissue regenerations. The bioinspired collagen scaffold loaded with bFGF-MSCs could accelerate diabetic wound healing via neovascularization by activating HIF-1 pathways.
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Affiliation(s)
- Feifei Huang
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing 210008, China
| | - Tianyun Gao
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing 210008, China
| | - Yirui Feng
- School of Life Science, Nanjing University, Nanjing 210008, Jiangsu Province, China
| | - Yuanyuan Xie
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing 210008, China
| | - Chenxu Tai
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing 210008, China
| | - Yahong Huang
- School of Life Science, Nanjing University, Nanjing 210008, Jiangsu Province, China
| | - Li Ling
- Department of Endocrinology, The Sixth Affiliated Hospital of Shenzhen University Medical School and Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen 518020, China
| | - Bin Wang
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing 210008, China
- Jiangsu Key Laboratory for Molecular Medicine, Nanjing University, Nanjing 210008, Jiangsu Province, China
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3
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Iqbal MH, Kerdjoudj H, Boulmedais F. Protein-based layer-by-layer films for biomedical applications. Chem Sci 2024; 15:9408-9437. [PMID: 38939139 PMCID: PMC11206333 DOI: 10.1039/d3sc06549a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 05/03/2024] [Indexed: 06/29/2024] Open
Abstract
The surface engineering of biomaterials is crucial for their successful (bio)integration by the body, i.e. the colonization by the tissue-specific cell, and the prevention of fibrosis and/or bacterial colonization. Performed at room temperature in an aqueous medium, the layer-by-layer (LbL) coating method is based on the alternating deposition of macromolecules. Versatile and simple, this method allows the functionalization of surfaces with proteins, which play a crucial role in several biological mechanisms. Possessing intrinsic properties (cell adhesion, antibacterial, degradable, etc.), protein-based LbL films represent a powerful tool to control bacterial and mammalian cell fate. In this article, after a general introduction to the LbL technique, we will focus on protein-based LbL films addressing different biomedical issues/domains, such as bacterial infection, blood contacting surfaces, mammalian cell adhesion, drug and gene delivery, and bone and neural tissue engineering. We do not consider biosensing applications or electrochemical aspects using specific proteins such as enzymes.
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Affiliation(s)
- Muhammad Haseeb Iqbal
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR 22, Strasbourg Cedex 2 67034 France
| | | | - Fouzia Boulmedais
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR 22, Strasbourg Cedex 2 67034 France
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Zhao Y, Lin Z, Liu W, Piao M, Li J, Zhang H. Controlled Release of Growth Factor from Heparin Embedded Poly(aldehyde guluronate) Hydrogels and Its Effect on Vascularization. Gels 2023; 9:589. [PMID: 37504468 PMCID: PMC10379275 DOI: 10.3390/gels9070589] [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: 06/13/2023] [Revised: 07/04/2023] [Accepted: 07/18/2023] [Indexed: 07/29/2023] Open
Abstract
To deliver growth factors controllably for tissue regeneration, poly(aldehyde guluronate) (PAG) was obtained from alginate and covalently cross-linked with aminated gelatin (AG) to form PAG/AG hydrogel as a growth factors carrier. The prepared hydrogel exhibits a slow degradation rate and excellent cytocompatibility. Heparin was conjugated with gelatin and embedded into the hydrogel to reserve and stabilize growth factors. Basic fibroblast growth factor (bFGF) was immobilized into the hydrogel and performed sustained release as the hydrogel degraded. The bFGF loaded hydrogel can improve vascularization effectively in a rat dorsal sac model. To summarize, heparin embedded PAG/AG hydrogels would serve as a promising biodegradable vehicle for the controlled delivery of growth factors and promoting vascularization in regenerative medicine.
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Affiliation(s)
- Yilan Zhao
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Zezhong Lin
- School of Science, Tianjin University, Tianjin 300072, China
- Key Laboratory of Resource Chemistry and Eco-Environmental Protection in Tibetan Plateau of State Ethnic Affairs Commission, School of Chemistry and Chemical Engineering, Qinghai Minzu University, Xining 810007, China
| | - Wenqu Liu
- School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Mingwei Piao
- School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Junjie Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- Key Laboratory of Resource Chemistry and Eco-Environmental Protection in Tibetan Plateau of State Ethnic Affairs Commission, School of Chemistry and Chemical Engineering, Qinghai Minzu University, Xining 810007, China
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, China
| | - Hong Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, China
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5
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Pourkhodadad S, Hosseinkazemi H, Bonakdar S, Nekounam H. Biomimetic engineered approaches for neural tissue engineering: Spinal cord injury. J Biomed Mater Res B Appl Biomater 2023; 111:701-716. [PMID: 36214332 DOI: 10.1002/jbm.b.35171] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 07/16/2022] [Accepted: 09/03/2022] [Indexed: 01/21/2023]
Abstract
The healing process for spinal cord injuries is complex and presents many challenges. Current advances in nerve regeneration are based on promising tissue engineering techniques, However, the chances of success depend on better mimicking the extracellular matrix (ECM) of neural tissue and better supporting neurons in a three-dimensional environment. The ECM provides excellent biological conditions, including desirable morphological features, electrical conductivity, and chemical compositions for neuron attachment, proliferation and function. This review outlines the rationale for developing a construct for neuron regrowth in spinal cord injury using appropriate biomaterials and scaffolding techniques.
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Affiliation(s)
| | - Hessam Hosseinkazemi
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Shahin Bonakdar
- National Cell Bank Department, Pasteur Institute of Iran, Tehran, Iran
| | - Houra Nekounam
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
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6
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Chen L, Huang C, Zhong Y, Chen Y, Zhang H, Zheng Z, Jiang Z, Wei X, Peng Y, Huang L, Niu L, Gao Y, Ma J, Yang L. Multifunctional sponge scaffold loaded with concentrated growth factors for promoting wound healing. iScience 2022; 26:105835. [PMID: 36624841 PMCID: PMC9823238 DOI: 10.1016/j.isci.2022.105835] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/10/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Although both are applied in regenerative medicine, acellular dermal matrix (ADM) and concentrated growth factor (CGF) have their respective shortcoming: The functioning of CGF is often hindered by sudden release effects, among other problems, and ADM can only be used in outer dressing for wound healing. In this study, a compound network with physical-chemical double cross-linking was constructed using chemical cross-linking and the intertwining of ADM and chitosan chains under freezing conditions; equipped with good biocompatibility and cell/tissue affinity, the heparin-modified composite scaffold was able to significantly promote cell adhesion and proliferation to achieve adequate fixation and slow down the release of CGF; polydopamine nanoparticles having excellent near-infrared light photothermal conversion ability could significantly promote the survival of rat autologous skin grafts. In a word, this multifunctional composite scaffold is a promising new type of implant biomaterial capable of delivering CGF to promote the healing of full-thickness skin defects.
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Affiliation(s)
- Lianglong Chen
- Department of Burns, Nanfang Hospital, Southern Medical University, Jingxi Street, Baiyun District, Guangzhou 510515, P.R. China
| | - Chaoyang Huang
- Department of Burns, Nanfang Hospital, Southern Medical University, Jingxi Street, Baiyun District, Guangzhou 510515, P.R. China
| | - Yu Zhong
- Department of Burns, Nanfang Hospital, Southern Medical University, Jingxi Street, Baiyun District, Guangzhou 510515, P.R. China
| | - Yujia Chen
- Department of Burns, Nanfang Hospital, Southern Medical University, Jingxi Street, Baiyun District, Guangzhou 510515, P.R. China
| | - Huihui Zhang
- Department of Burns, Nanfang Hospital, Southern Medical University, Jingxi Street, Baiyun District, Guangzhou 510515, P.R. China
| | - Zijun Zheng
- Department of Burns, Nanfang Hospital, Southern Medical University, Jingxi Street, Baiyun District, Guangzhou 510515, P.R. China
| | - Ziwei Jiang
- Department of Burns, Nanfang Hospital, Southern Medical University, Jingxi Street, Baiyun District, Guangzhou 510515, P.R. China
| | - Xuerong Wei
- Department of Burns, Nanfang Hospital, Southern Medical University, Jingxi Street, Baiyun District, Guangzhou 510515, P.R. China
| | - Yujie Peng
- Department of Burns, Nanfang Hospital, Southern Medical University, Jingxi Street, Baiyun District, Guangzhou 510515, P.R. China
| | - Lei Huang
- Department of Burns, Nanfang Hospital, Southern Medical University, Jingxi Street, Baiyun District, Guangzhou 510515, P.R. China
| | - Libin Niu
- Department of Burns, Nanfang Hospital, Southern Medical University, Jingxi Street, Baiyun District, Guangzhou 510515, P.R. China
| | - Yanbin Gao
- Department of Burns, Nanfang Hospital, Southern Medical University, Jingxi Street, Baiyun District, Guangzhou 510515, P.R. China,Corresponding author
| | - Jun Ma
- Department of Burns, Nanfang Hospital, Southern Medical University, Jingxi Street, Baiyun District, Guangzhou 510515, P.R. China,Corresponding author
| | - Lei Yang
- Department of Burns, Nanfang Hospital, Southern Medical University, Jingxi Street, Baiyun District, Guangzhou 510515, P.R. China,Corresponding author
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7
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Hu J, Wang Z, Miszuk JM, Zeng E, Sun H. High Molecular Weight Poly(glutamic acid) to Improve BMP2-Induced Osteogenic Differentiation. Mol Pharm 2022; 19:4565-4575. [PMID: 35675584 PMCID: PMC9729371 DOI: 10.1021/acs.molpharmaceut.2c00141] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
FDA-approved bone morphogenetic protein 2 (BMP2) has serious side effects due to the super high dose requirement. Heparin is one of the most well-studied sulfated polymers to stabilize BMP2 and improve its functionality. However, the clinical use of heparin is questionable because of its undesired anticoagulant activity. Recent studies suggest that poly(glutamic acid) (pGlu) has the potential to improve BMP2 bioactivity with less safety concerns; however, the knowledge on pGlu's contribution remains largely unknown. Therefore, we aimed to study the role of pGlu in BMP2-induced osteogenesis and its potential application in bone tissue engineering. Our data, for the first time, indicated that both low (L-pGlu) and high molecular weight pGlu (H-pGlu) were able to significantly improve the BMP2-induced early osteoblastic differentiation marker (ALP) in MC3T3-E1 preosteoblasts. Importantly, the matrix mineralization was more rapidly enhanced by H-pGlu compared to L-pGlu. Additionally, our data indicated that only α-H-pGlu could significantly improve BMP2's activity, whereas γ-H-pGlu failed to do so. Moreover, both gene expression and mineralization data demonstrated that α-H-pGlu enabled a single dose of BMP2 to induce a high level of osteoblastic differentiation without multiple doses of BMP2. To study the potential application of pGlu in tissue engineering, we incorporated the H-pGlu+BMP2 nanocomplexes into the collagen hydrogel with significantly elevated osteoblastic differentiation. Furthermore, H-pGlu-coated 3D porous gelatin and chitosan scaffolds significantly enhanced osteogenic differentiation through enabling sustained release of BMP2. Thus, our findings suggest that H-pGlu is a promising new alternative with great potential for bone tissue engineering applications.
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Affiliation(s)
- Jue Hu
- Department of Oral and Maxillofacial Surgery, University of Iowa College of Dentistry, Iowa City, IA 52242, USA
- Iowa Institute for Oral Health Research, University of Iowa College of Dentistry, Iowa City, IA 52242, USA
| | - Zhuozhi Wang
- Department of Oral and Maxillofacial Surgery, University of Iowa College of Dentistry, Iowa City, IA 52242, USA
- Iowa Institute for Oral Health Research, University of Iowa College of Dentistry, Iowa City, IA 52242, USA
| | - Jacob M. Miszuk
- Department of Oral and Maxillofacial Surgery, University of Iowa College of Dentistry, Iowa City, IA 52242, USA
- Iowa Institute for Oral Health Research, University of Iowa College of Dentistry, Iowa City, IA 52242, USA
| | - Erliang Zeng
- Iowa Institute for Oral Health Research, University of Iowa College of Dentistry, Iowa City, IA 52242, USA
| | - Hongli Sun
- Department of Oral and Maxillofacial Surgery, University of Iowa College of Dentistry, Iowa City, IA 52242, USA
- Iowa Institute for Oral Health Research, University of Iowa College of Dentistry, Iowa City, IA 52242, USA
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8
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Tailored Polyelectrolyte Multilayer Systems by Variation of Polyelectrolyte Composition and EDC/NHS Cross-Linking: Controlled Drug Release vs. Drug Reservoir Capabilities and Cellular Response for Improved Osseointegration. Polymers (Basel) 2022; 14:polym14204315. [PMID: 36297892 PMCID: PMC9609345 DOI: 10.3390/polym14204315] [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: 09/08/2022] [Revised: 10/05/2022] [Accepted: 10/10/2022] [Indexed: 11/05/2022] Open
Abstract
Polyelectrolyte multilayers (PEM) are versatile tools used to investigate fundamental interactions between material-related parameters and the resulting performance in stem cell differentiation, respectively, in bone tissue engineering. In the present study, we investigate the suitability of PEMs with a varying collagen content for use as drug carriers for the human bone morphogenetic protein 2 (rhBMP-2). We use three different PEM systems consisting either of the positively charged poly-L-lysine or the glycoprotein collagen type I and the negatively charged glycosaminoglycan heparin. For a specific modification of the loading capacity and the release kinetics, the PEMs were stepwise cross-linked before loading with cytokine. We demonstrate the possibility of immobilizing significant amounts of rhBMP-2 in all multilayer systems and to specifically tune its release via cross-linking. Furthermore, we prove that the drug release of rhBMP-2 plays only a minor role in the differentiation of osteoprogenitor cells. We find a significantly higher influence of the immobilized rhBMP-2 within the collagen-rich coatings that obviously represent an excellent mimicry of the native extracellular matrix. The cytokine immobilized in its bioactive form was able to achieve an increase in orders of magnitude both in the early stages of differentiation and in late calcification compared to the unloaded layers.
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9
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Shi Q, Wei S, Li ZC, Xu J, Li Y, Guo C, Wu X, Shi C, Di G. Collagen-binding fibroblast growth factor ameliorates liver fibrosis in murine bile duct ligation injury. J Biomater Appl 2022; 37:918-929. [PMID: 35969638 DOI: 10.1177/08853282221121861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cholestatic liver injury, characterized by liver fibrosis, has increasingly become a global health problem, with no effective treatment available. Hepatic stellate cells (HSCs) differentiate into myofibroblasts, leading to excessive deposition of the extracellular matrix (ECM), which is a feature of liver fibrosis. Basic fibroblast growth factor (bFGF) has proven antifibrotic effects in chronic liver disease; however, the lack of an effective delivery system to the injury site reduces its therapeutic efficacy. The aim of this study was to assess the therapeutic effect of collagen-binding bFGF (CBD-bFGF) for the treatment of liver fibrosis in a murine bile duct ligation (BDL) model. We found that CBD-bFGF treatment significantly alleviated liver injury in the early phase of BDL injury, and was associated with decreased necroptotic cell death and inflammatory response. Moreover, CBD-bFGF had enhanced therapeutic effects for liver fibrosis on day 7 after surgery compared to those obtained with native bFGF treatment. In vitro, CBD-bFGF treatment notably inhibited TGF-β1-induced LX-2 cell activation, migration, and contraction compared with native bFGF. In conclusion, CBD-bFGF may be a promising treatment for hepatic fibrosis.
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Affiliation(s)
- Qiangqiang Shi
- School of Basic Medicine, Medical College, 12593Qingdao University, Qingdao, China
| | - Susu Wei
- School of Basic Medicine, Medical College, 12593Qingdao University, Qingdao, China
| | - Zhi Chao Li
- Department of Gynaecology and Obstetrics, Qingdao Municipal Hospital, 12593Qingdao University, Qingdao, China
| | - Jing Xu
- School of Basic Medicine, Medical College, 12593Qingdao University, Qingdao, China
| | - Yaxin Li
- School of Basic Medicine, Medical College, 12593Qingdao University, Qingdao, China
| | - Chuanlong Guo
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, China
| | - Xianggen Wu
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, China
| | - Chunying Shi
- School of Basic Medicine, Medical College, 12593Qingdao University, Qingdao, China
| | - Guohu Di
- School of Basic Medicine, Medical College, 12593Qingdao University, Qingdao, China
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10
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Collagen-Based Osteogenic Nanocoating of Microrough Titanium Surfaces. Int J Mol Sci 2022; 23:ijms23147803. [PMID: 35887152 PMCID: PMC9317921 DOI: 10.3390/ijms23147803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/07/2022] [Accepted: 07/12/2022] [Indexed: 01/02/2023] Open
Abstract
The aim of the present study was to develop a collagen/heparin-based multilayer coating on titanium surfaces for retarded release of recombinant human bone morphogenic protein 2 (rhBMP2) to enhance the osteogenic activity of implant surfaces. Polyelectrolyte multilayer (PEM) coatings were constructed on sandblasted/acid-etched surfaces of titanium discs using heparin and collagen. PEM films of ten double layers were produced and overlayed with 200 µL of a rhBMP2 solution containing 15 µg rhBMP2. Subsequently, cross-linking of heparin molecules was performed using EDC/NHS chemistry to immobilize the incorporated rhBMP2. Release characteristics for 3 weeks, induction of Alkaline Phosphatase (ALP) in C2C12 cells and proliferation of human mesenchymal stem cells (hMSCs) were evaluated to analyze the osteogenic capacity of the surface. The coating incorporated 10.5 µg rhBMP2 on average per disc and did not change the surface morphology. The release profile showed a delivery of 14.5% of the incorporated growth factor during the first 24 h with a decline towards the end of the observation period with a total release of 31.3%. Cross-linking reduced the release with an almost complete suppression at 100% cross-linking. Alkaline Phosphatase was significantly increased on day 1 and day 21, indicating that the growth factor bound in the coating remains active and available after 3 weeks. Proliferation of hMSCs was significantly enhanced by the non-cross-linked PEM coating. Nanocoating using collagen/heparin-based PEMs can incorporate clinically relevant amounts of rhBMP2 on titanium surfaces with a retarded release and a sustained enhancement of osteogenic activity without changing the surface morphology.
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11
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Waris TS, Shah STA, Mehmood A, Iqbal Z, Zehra M, Chaudhry AA, Rehman IU, Yar M. Design and development of thyroxine/heparin releasing affordable cotton dressings to treat chronic wounds. J Tissue Eng Regen Med 2022; 16:460-471. [PMID: 35246945 DOI: 10.1002/term.3295] [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: 11/18/2021] [Revised: 02/06/2022] [Accepted: 02/17/2022] [Indexed: 11/09/2022]
Abstract
This research on a thyroxine/heparin-based cotton wound dressing tests angiogenic and wound healing ability of thyroxine/heparin in a chick chorionic allantoic membrane bioassay and in skin wounds in healthy rats. Commercially available cotton dressings were simply loaded with thyroxine/heparin solutions and coated with wax. Prior to undertaking the animal study, we assessed in vitro release of thyroxine/heparin from coated and uncoated cotton dressings. Both showed more than 85% release of drug over 14 days, though the lesser release was observed in wax-coated thyroxine/heparin dressing as compared to uncoated thyroxine/heparin dressing. Testing of angiogenesis through CAM assay proved good angiogenic potential of heparin and thyroxin, but the thyroxine found more angiogenic than heparin. In animal study, full-thickness skin wounds of 20 mm diameter showed good healing in both heparin and thyroxine-treated groups. But the most striking result was seen in the thyroxine-treated group where thyroxine showed significant difference with heparin-treated group and completely healed the wounds in 23 days. Thus, the study suggest that thyroxine possesses greater angiogenic and wound healing potential than heparin, and the use of thyroxine/heparin-loaded wax-coated cotton dressing could be a cost-effective option for the management of chronic wounds.
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Affiliation(s)
- Tayyba Sher Waris
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
| | | | - Azra Mehmood
- Centre for Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Zohaib Iqbal
- Centre for Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Mubashra Zehra
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
| | - Ihtesham Ur Rehman
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan.,Engineering Department, Lancaster University, Lancaster, UK
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore, Pakistan
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12
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Muthusamy S, Kannan S, Lee M, Sanjairaj V, Lu WF, Fuh JYH, Sriram G, Cao T. 3D bioprinting and microscale organization of vascularized tissue constructs using collagen-based bioink. Biotechnol Bioeng 2021; 118:3150-3163. [PMID: 34037982 DOI: 10.1002/bit.27838] [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: 10/30/2020] [Revised: 04/19/2021] [Accepted: 05/18/2021] [Indexed: 12/29/2022]
Abstract
Bioprinting three-dimensional (3D) tissue equivalents have progressed tremendously over the last decade. 3D bioprinting is currently being employed to develop larger and more physiologic tissues, and it is of particular interest to generate vasculature in biofabricated tissues to aid better perfusion and transport of nutrition. Having an advantage over manual culture systems by bringing together biological scaffold materials and cells in precise 3D spatial orientation, bioprinting could assist in placing endothelial cells in specific spatial locations within a 3D matrix to promote vessel formation at these predefined areas. Hence, in the present study, we investigated the use of bioprinting to generate tissue-level capillary-like networks in biofabricated tissue constructs. First, we developed a bioink using collagen type-1 supplemented with xanthan gum (XG) as a thickening agent. Using a commercial extrusion-based multi-head bioprinter and collagen-XG bioink, the component cells were spatially assembled, wherein the endothelial cells were bioprinted in a lattice pattern and sandwiched between bioprinted fibroblasts layers. 3D bioprinted constructs thus generated were stable, and maintained structural shape and form. Post-print culture of the bioprinted tissues resulted in endothelial sprouting and formation of interconnected capillary-like networks within the lattice pattern and between the fibroblast layers. Bioprinter-assisted spatial placement of endothelial cells resulted in fabrication of patterned prevascularized constructs that enable potential regenerative applications in the future.
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Affiliation(s)
| | - Sathya Kannan
- Faculty of Dentistry, National University of Singapore, Singapore
| | - Marcus Lee
- Faculty of Dentistry, National University of Singapore, Singapore
| | - Vijayavenkataraman Sanjairaj
- Division of Engineering, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates.,Department of Mechanical Engineering, Tandon School of Engineering, New York University, New York, New York, USA
| | - Wen Feng Lu
- Department of Mechanical Engineering, National University of Singapore, Singapore.,NUS Centre for Additive Manufacturing (AM.NUS), National University of Singapore, Singapore
| | - Jerry Y H Fuh
- Department of Mechanical Engineering, National University of Singapore, Singapore.,NUS Centre for Additive Manufacturing (AM.NUS), National University of Singapore, Singapore
| | - Gopu Sriram
- Faculty of Dentistry, National University of Singapore, Singapore.,NUS Centre for Additive Manufacturing (AM.NUS), National University of Singapore, Singapore
| | - Tong Cao
- Faculty of Dentistry, National University of Singapore, Singapore
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13
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Meng X, Xing Y, Li J, Deng C, Li Y, Ren X, Zhang D. Rebuilding the Vascular Network: In vivo and in vitro Approaches. Front Cell Dev Biol 2021; 9:639299. [PMID: 33968926 PMCID: PMC8097043 DOI: 10.3389/fcell.2021.639299] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 03/29/2021] [Indexed: 12/25/2022] Open
Abstract
As the material transportation system of the human body, the vascular network carries the transportation of materials and nutrients. Currently, the construction of functional microvascular networks is an urgent requirement for the development of regenerative medicine and in vitro drug screening systems. How to construct organs with functional blood vessels is the focus and challenge of tissue engineering research. Here in this review article, we first introduced the basic characteristics of blood vessels in the body and the mechanism of angiogenesis in vivo, summarized the current methods of constructing tissue blood vessels in vitro and in vivo, and focused on comparing the functions, applications and advantages of constructing different types of vascular chips to generate blood vessels. Finally, the challenges and opportunities faced by the development of this field were discussed.
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Affiliation(s)
- Xiangfu Meng
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, China
| | - Yunhui Xing
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, United States
| | - Jiawen Li
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Cechuan Deng
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Yifei Li
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Xi Ren
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, United States
| | - Donghui Zhang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, China
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14
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Leal BBJ, Wakabayashi N, Oyama K, Kamiya H, Braghirolli DI, Pranke P. Vascular Tissue Engineering: Polymers and Methodologies for Small Caliber Vascular Grafts. Front Cardiovasc Med 2021; 7:592361. [PMID: 33585576 PMCID: PMC7873993 DOI: 10.3389/fcvm.2020.592361] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 12/09/2020] [Indexed: 12/24/2022] Open
Abstract
Cardiovascular disease is the most common cause of death in the world. In severe cases, replacement or revascularization using vascular grafts are the treatment options. While several synthetic vascular grafts are clinically used with common approval for medium to large-caliber vessels, autologous vascular grafts are the only options clinically approved for small-caliber revascularizations. Autologous grafts have, however, some limitations in quantity and quality, and cause an invasiveness to patients when harvested. Therefore, the development of small-caliber synthetic vascular grafts (<5 mm) has been urged. Since small-caliber synthetic grafts made from the same materials as middle and large-caliber grafts have poor patency rates due to thrombus formation and intimal hyperplasia within the graft, newly innovative methodologies with vascular tissue engineering such as electrospinning, decellularization, lyophilization, and 3D printing, and novel polymers have been developed. This review article represents topics on the methodologies used in the development of scaffold-based vascular grafts and the polymers used in vitro and in vivo.
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Affiliation(s)
- Bruna B J Leal
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil.,Post-graduate Program in Physiology, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Naohiro Wakabayashi
- Division of Cardiac Surgery, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Kyohei Oyama
- Division of Cardiac Surgery, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Hiroyuki Kamiya
- Division of Cardiac Surgery, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Daikelly I Braghirolli
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Patricia Pranke
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil.,Post-graduate Program in Physiology, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil.,Stem Cell Research Institute, Porto Alegre, Brazil
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15
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Shi X, Jiang L, Zhao X, Chen B, Shi W, Cao Y, Chen Y, Li X, He Y, Li C, Liu X, Li X, Lu H, Chen C, Liu J. Adipose-Derived Stromal Cell-Sheets Sandwiched, Book-Shaped Acellular Dermal Matrix Capable of Sustained Release of Basic Fibroblast Growth Factor Promote Diabetic Wound Healing. Front Cell Dev Biol 2021; 9:646967. [PMID: 33842472 PMCID: PMC8027315 DOI: 10.3389/fcell.2021.646967] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 02/23/2021] [Indexed: 12/13/2022] Open
Abstract
The management of diabetic wounds is a therapeutic challenge in clinical settings. Current tissue engineering strategies for diabetic wound healing are insufficient, owing to the lack of an appropriate scaffold that can load a large number of stem cells and induce the interaction of stem cells to form granulation tissue. Herein we fabricated a book-shaped decellularized dermal matrix (BDDM), which shows a high resemblance to native dermal tissue in terms of its histology, microstructure, and ingredients, is non-cytotoxic and low-immunogenic, and allows adipose-derived stromal cell (ASC) attachment and proliferation. Then, a collagen-binding domain (CBD) capable of binding collagen was fused into basic fibroblast growth factor (bFGF) to synthetize a recombinant growth factor (termed as CBD-bFGF). After that, CBD-bFGF was tethered onto the collagen fibers of BDDM to improve its endothelial inducibility. Finally, a functional scaffold (CBD-bFGF/BDDM) was fabricated. In vitro and in vivo experiments demonstrated that CBD-bFGF/BDDM can release tethered bFGF with a sustained release profile, steadily inducing the interaction of stem cells down to endothelial differentiation. ASCs were cultured to form a cell sheet and then sandwiched by CBD-bFGF/BDDM, thus enlarging the number of stem cells loaded into the scaffold. Using a rat model, the ASC sheets sandwiched with CBD-bFGF/BDDM (ASCs/CBD-bFGF/BDDM) were capable of enhancing the formation of granulation tissue, promoting angiogenesis, and facilitating collagen deposition and remodeling. Therefore, the findings of this study demonstrate that ASCs/CBD-bFGF/BDDM could be applicable for diabetic wound healing.
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Affiliation(s)
- Xin Shi
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Department of Limbs (Foot and Hand) Microsurgery, Affiliated Chenzhou Hospital, Southern Medical University, Chenzhou, China
| | - Liyuan Jiang
- Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, China
- Hunan Engineering Research Center of Sports and Health, Changsha, China
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Xin Zhao
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Department of Limbs (Foot and Hand) Microsurgery, Affiliated Chenzhou Hospital, Southern Medical University, Chenzhou, China
| | - Bei Chen
- Department of Limbs (Foot and Hand) Microsurgery, Affiliated Chenzhou Hospital, Southern Medical University, Chenzhou, China
| | - Wei Shi
- Department of Emergency, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, China
| | - Yanpeng Cao
- Department of Limbs (Foot and Hand) Microsurgery, Affiliated Chenzhou Hospital, Southern Medical University, Chenzhou, China
| | - Yaowu Chen
- Department of Limbs (Foot and Hand) Microsurgery, Affiliated Chenzhou Hospital, Southern Medical University, Chenzhou, China
| | - Xiying Li
- Department of Limbs (Foot and Hand) Microsurgery, Affiliated Chenzhou Hospital, Southern Medical University, Chenzhou, China
| | - Yusheng He
- Department of Limbs (Foot and Hand) Microsurgery, Affiliated Chenzhou Hospital, Southern Medical University, Chenzhou, China
| | - Chengjie Li
- Department of Limbs (Foot and Hand) Microsurgery, Affiliated Chenzhou Hospital, Southern Medical University, Chenzhou, China
| | - Xiaoren Liu
- Department of Limbs (Foot and Hand) Microsurgery, Affiliated Chenzhou Hospital, Southern Medical University, Chenzhou, China
| | - Xing Li
- Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, China
- Hunan Engineering Research Center of Sports and Health, Changsha, China
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Hongbin Lu
- Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, China
- Hunan Engineering Research Center of Sports and Health, Changsha, China
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
- Department of Sports Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Can Chen
- Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, China
- Hunan Engineering Research Center of Sports and Health, Changsha, China
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Can Chen,
| | - Jun Liu
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Department of Limbs (Foot and Hand) Microsurgery, Affiliated Chenzhou Hospital, Southern Medical University, Chenzhou, China
- The First School of Clinical Medicine, Xiangnan University, Chenzhou, China
- Jun Liu,
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16
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Barkovskaya A, Buffone A, Žídek M, Weaver VM. Proteoglycans as Mediators of Cancer Tissue Mechanics. Front Cell Dev Biol 2020; 8:569377. [PMID: 33330449 PMCID: PMC7734320 DOI: 10.3389/fcell.2020.569377] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 11/04/2020] [Indexed: 12/16/2022] Open
Abstract
Proteoglycans are a diverse group of molecules which are characterized by a central protein backbone that is decorated with a variety of linear sulfated glycosaminoglycan side chains. Proteoglycans contribute significantly to the biochemical and mechanical properties of the interstitial extracellular matrix where they modulate cellular behavior by engaging transmembrane receptors. Proteoglycans also comprise a major component of the cellular glycocalyx to influence transmembrane receptor structure/function and mechanosignaling. Through their ability to initiate biochemical and mechanosignaling in cells, proteoglycans elicit profound effects on proliferation, adhesion and migration. Pathologies including cancer and cardiovascular disease are characterized by perturbed expression of proteoglycans where they compromise cell and tissue behavior by stiffening the extracellular matrix and increasing the bulkiness of the glycocalyx. Increasing evidence indicates that a bulky glycocalyx and proteoglycan-enriched extracellular matrix promote malignant transformation, increase cancer aggression and alter anti-tumor therapy response. In this review, we focus on the contribution of proteoglycans to mechanobiology in the context of normal and transformed tissues. We discuss the significance of proteoglycans for therapy response, and the current experimental strategies that target proteoglycans to sensitize cancer cells to treatment.
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Affiliation(s)
- Anna Barkovskaya
- Center for Bioengineering & Tissue Regeneration, Department of Surgery, University of California, San Francisco, San Francisco, CA, United States
| | - Alexander Buffone
- Center for Bioengineering & Tissue Regeneration, Department of Surgery, University of California, San Francisco, San Francisco, CA, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, United States
| | - Martin Žídek
- Center for Bioengineering & Tissue Regeneration, Department of Surgery, University of California, San Francisco, San Francisco, CA, United States
| | - Valerie M. Weaver
- Center for Bioengineering & Tissue Regeneration, Department of Surgery, University of California, San Francisco, San Francisco, CA, United States
- Department of Radiation Oncology, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, United States
- Department of Bioengineering, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, United States
- Department of Therapeutic Sciences, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, United States
- UCSF Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA, United States
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17
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Guo Z, Genlong J, Huang Z, Li H, Ge Y, Wu Z, Yu P, Li Z. Synergetic effect of growth factor and topography on fibroblast proliferation. Biomed Phys Eng Express 2020; 6. [PMID: 34035190 DOI: 10.1088/2057-1976/abc8e2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 11/09/2020] [Indexed: 12/27/2022]
Abstract
An innovative basic fibroblast growth factor (bFGF)-loaded polycaprolactone (PCL) fibrous membrane with highly aligned structure is developed for guided tissue regeneration (GTR). The aligned membrane is fabricated by electrospinning. In order to make efficient use of bFGF, PCL electrospun fibrous membrane is firstly surface-coated by self-polymerization of dopamine, and followed by immobilization of heparin via covalent conjugation to the polydopamine (PDA) layer. Subsequently, bFGF is loaded by binding to heparin. The loading yield of bFGF on heparin-immobilized PDA-coated PCL membrane significantly increases to around 7 times as compared with that of pure PCL membrane. NIH-3T3 cells show an enhanced proliferation and exhibit a stretched morphology aligned along the direction of the fibers on the aligned membranes. However, aligned bFGF-loaded PCL membrane exhibit a similar morphology but a highest cell density prolonged till 9 days. The synergetic effect of growth factor and topography would effectively regulate cell proliferation.
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Affiliation(s)
- Zhenzhao Guo
- Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, People's Republic of China
| | - Jiao Genlong
- The First Affiliated Hospital, Jinan University, Guangzhou 510630, People's Republic of China
| | - Zhiqiang Huang
- Department of Materials Science and Engineering, Jinan University, Guangzhou 510632, People's Republic of China
| | - Hong Li
- Department of Materials Science and Engineering, Jinan University, Guangzhou 510632, People's Republic of China
| | - Yao Ge
- Department of Materials Science and Engineering, Jinan University, Guangzhou 510632, People's Republic of China
| | - Zhe Wu
- Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, People's Republic of China
| | - Pei Yu
- Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, Guangdong 510182, People's Republic of China
| | - Zhizhong Li
- The First Affiliated Hospital, Jinan University, Guangzhou 510630, People's Republic of China
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18
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Hu X, Li R, Wu Y, Li Y, Zhong X, Zhang G, Kang Y, Liu S, Xie L, Ye J, Xiao J. Thermosensitive heparin-poloxamer hydrogel encapsulated bFGF and NGF to treat spinal cord injury. J Cell Mol Med 2020; 24:8166-8178. [PMID: 32515141 PMCID: PMC7348165 DOI: 10.1111/jcmm.15478] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 04/18/2020] [Accepted: 05/24/2020] [Indexed: 01/10/2023] Open
Abstract
The application of growth factors (GFs) for treating chronic spinal cord injury (SCI) has been shown to promote axonal regeneration and functional recovery. However, direct administration of GFs is limited by their rapid degradation and dilution at the injured sites. Moreover, SCI recovery is a multifactorial process that requires multiple GFs to participate in tissue regeneration. Based on these facts, controlled delivery of multiple growth factors (GFs) to lesion areas is becoming an attractive strategy for repairing SCI. Presently, we developed a GFs‐based delivery system (called GFs‐HP) that consisted of basic fibroblast growth factor (bFGF), nerve growth factor (NGF) and heparin‐poloxamer (HP) hydrogel through self‐assembly mode. This GFs‐HP was a kind of thermosensitive hydrogel that was suitable for orthotopic administration in vivo. Meanwhile, a 3D porous structure of this hydrogel is commonly used to load large amounts of GFs. After single injection of GFs‐HP into the lesioned spinal cord, the sustained release of NGF and bFGF from HP could significantly improve neuronal survival, axon regeneration, reactive astrogliosis suppression and locomotor recovery, when compared with the treatment of free GFs or HP. Moreover, we also revealed that these neuroprotective and neuroregenerative effects of GFs‐HP were likely through activating the phosphatidylinositol 3 kinase and protein kinase B (PI3K/Akt) and mitogen‐activated protein kinase/extracellular signal‐regulated kinase (MAPK/ERK) signalling pathways. Overall, our work will provide an effective therapeutic strategy for SCI repair.
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Affiliation(s)
- Xiaoli Hu
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China.,Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Rui Li
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China.,Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China.,School of Chemistry, Sun Yat-sen University, Guangzhou, China
| | - Yanqing Wu
- The Institute of Life Sciences, Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Biomedical Collaborative Innovation Center of Wenzhou, Wenzhou University, Wenzhou, China
| | - Yi Li
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Xingfeng Zhong
- Department of Anesthesia, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Guanyinsheng Zhang
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Yanmin Kang
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Shuhua Liu
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Ling Xie
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Junming Ye
- Department of Anesthesia, The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Jian Xiao
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China.,The Institute of Life Sciences, Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Biomedical Collaborative Innovation Center of Wenzhou, Wenzhou University, Wenzhou, China
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19
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Mays EA, Kallakuri SS, Sundararaghavan HG. Heparin-hyaluronic acid nanofibers for growth factor sequestration in spinal cord repair. J Biomed Mater Res A 2020; 108:2023-2031. [PMID: 32319183 DOI: 10.1002/jbm.a.36962] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 03/24/2020] [Accepted: 03/28/2020] [Indexed: 12/18/2022]
Abstract
Growth factor (GF) delivery is a common strategy for spinal cord injury repair, however, GF degradation can impede long-term therapies. GF sequestration via heparin is known to protect bioactivity after delivery. We tested two heparin modifications, methacrylated heparin and thiolated heparin, and electrospun these with methacrylated hyaluronic acid (MeHA) to form HepMAHA and HepSHHA nanofibers. For loaded conditions, MeHA, HepMAHA, and HepSHHA fibers were incubated with soluble basic fibroblast growth factor (bFGF) or nerve growth factor (NGF) and rinsed with PBS. Control groups were hydrated in PBS. L929 fibroblast proliferation was analyzed after 24 hr of culture in either growth media or bFGF-supplemented media. Dissociated chick dorsal root ganglia neurites were measured after 3 days of cell culture in serum free media (SFM) or NGF-supplemented SFM (SFM + NGF). In growth media, fibroblast proliferation was significantly increased in loaded HepMAHA (α < .05) compared to other groups. In SFM, loaded HepMAHA had the longest average neurite length compared to all other groups. In SFM + NGF, HepMAHA and HepSHHA had increased neurite lengths compared to MeHA, regardless of loading (α < .01), suggesting active sequestration of soluble NGF. HepMAHA is a promising biomaterial for sequestering released GFs in a spinal cord injury environment and will be combined with GF filled microspheres for future studies.
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Affiliation(s)
- Elizabeth A Mays
- Biomedical Engineering, Wayne State University, Detroit, Michigan, USA
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20
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Cheng YC, Guo SL, Chung KD, Hu WW. Electrical Field-Assisted Gene Delivery from Polyelectrolyte Multilayers. Polymers (Basel) 2020; 12:E133. [PMID: 31935814 PMCID: PMC7022892 DOI: 10.3390/polym12010133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/19/2019] [Accepted: 01/01/2020] [Indexed: 12/12/2022] Open
Abstract
To sustain gene delivery and elongate transgene expression, plasmid DNA and cationic nonviral vectors can be deposited through layer-by-layer (LbL) assembly to form polyelectrolyte multilayers (PEMs). Although these macromolecules can be released for transfection purposes, their entanglement only allows partial delivery. Therefore, how to efficiently deliver immobilized genes from PEMs remains a challenge. In this study, we attempt to facilitate their delivery through the pretreatment of the external electrical field. Multilayers of polyethylenimine (PEI) and DNA were deposited onto conductive polypyrrole (PPy), which were placed in an aqueous environment to examine their release after electric field pretreatment. Only the electric field perpendicular to the substrate with constant voltage efficiently promoted the release of PEI and DNA from PEMs, and the higher potential resulted in the more releases which were enhanced with treatment time. The roughness of PEMs also increased after electric field treatment because the electrical field not only caused electrophoresis of polyelectrolytes and but also allowed electrochemical reaction on the PPy electrode. Finally, the released DNA and PEI were used for transfection. Polyplexes were successfully formed after electric field treatment, and the transfection efficiency was also improved, suggesting that this electric field pretreatment effectively assists gene delivery from PEMs and should be beneficial to regenerative medicine application.
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Affiliation(s)
- Yu-Che Cheng
- Proteomics Laboratory, Department of Medical Research, Cathay General Hospital, Taipei 10630, Taiwan;
- Department of Biomedical Sciences and Engineering, National Central University, Zhongli District, Taoyuan City 32001, Taiwan
- School of Medicine, Fu Jen Catholic University, New Taipei City 24205, Taiwan;
| | - Shu-Lin Guo
- School of Medicine, Fu Jen Catholic University, New Taipei City 24205, Taiwan;
- Department of Anesthesiology, Cathay General Hospital, Taipei 10630, Taiwan
- Department of Anesthesiology, Tri-Service General Hospital and National Defense Medical Center, Taipei 11490, Taiwan
| | - Kun-Da Chung
- Department of Chemical and Materials Engineering, National Central University, Zhongli District, Taoyuan City 32001, Taiwan
| | - Wei-Wen Hu
- Department of Chemical and Materials Engineering, National Central University, Zhongli District, Taoyuan City 32001, Taiwan
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21
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Copes F, Pien N, Van Vlierberghe S, Boccafoschi F, Mantovani D. Collagen-Based Tissue Engineering Strategies for Vascular Medicine. Front Bioeng Biotechnol 2019; 7:166. [PMID: 31355194 PMCID: PMC6639767 DOI: 10.3389/fbioe.2019.00166] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 06/24/2019] [Indexed: 12/21/2022] Open
Abstract
Cardiovascular diseases (CVDs) account for the 31% of total death per year, making them the first cause of death in the world. Atherosclerosis is at the root of the most life-threatening CVDs. Vascular bypass/replacement surgery is the primary therapy for patients with atherosclerosis. The use of polymeric grafts for this application is still burdened by high-rate failure, mostly caused by thrombosis and neointima hyperplasia at the implantation site. As a solution for these problems, the fast re-establishment of a functional endothelial cell (EC) layer has been proposed, representing a strategy of crucial importance to reduce these adverse outcomes. Implant modifications using molecules and growth factors with the aim of speeding up the re-endothelialization process has been proposed over the last years. Collagen, by virtue of several favorable properties, has been widely studied for its application in vascular graft enrichment, mainly as a coating for vascular graft luminal surface and as a drug delivery system for the release of pro-endothelialization factors. Collagen coatings provide receptor-ligand binding sites for ECs on the graft surface and, at the same time, act as biological sealants, effectively reducing graft porosity. The development of collagen-based drug delivery systems, in which small-molecule and protein-based drugs are immobilized within a collagen scaffold in order to control their release for biomedical applications, has been widely explored. These systems help in protecting the biological activity of the loaded molecules while slowing their diffusion from collagen scaffolds, providing optimal effects on the targeted vascular cells. Moreover, collagen-based vascular tissue engineering substitutes, despite not showing yet optimal mechanical properties for their use in the therapy, have shown a high potential as physiologically relevant models for the study of cardiovascular therapeutic drugs and diseases. In this review, the current state of the art about the use of collagen-based strategies, mainly as a coating material for the functionalization of vascular graft luminal surface, as a drug delivery system for the release of pro-endothelialization factors, and as physiologically relevant in vitro vascular models, and the future trend in this field of research will be presented and discussed.
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Affiliation(s)
- Francesco Copes
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering & Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec City, QC, Canada
- Laboratory of Human Anatomy, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
| | - Nele Pien
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering & Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec City, QC, Canada
- Polymer Chemistry & Biomaterials Group, Department of Organic and Macromolecular Chemistry, Centre of Macromolecular Chemistry, Ghent University, Ghent, Belgium
| | - Sandra Van Vlierberghe
- Polymer Chemistry & Biomaterials Group, Department of Organic and Macromolecular Chemistry, Centre of Macromolecular Chemistry, Ghent University, Ghent, Belgium
| | - Francesca Boccafoschi
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering & Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec City, QC, Canada
- Laboratory of Human Anatomy, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
| | - Diego Mantovani
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering & Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec City, QC, Canada
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Copes F, Chevallier P, Loy C, Pezzoli D, Boccafoschi F, Mantovani D. Heparin-Modified Collagen Gels for Controlled Release of Pleiotrophin: Potential for Vascular Applications. Front Bioeng Biotechnol 2019; 7:74. [PMID: 31024906 PMCID: PMC6465514 DOI: 10.3389/fbioe.2019.00074] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 03/18/2019] [Indexed: 01/14/2023] Open
Abstract
A fast re-endothelialization, along with the inhibition of neointima hyperplasia, are crucial to reduce the failure of vascular bypass grafts. Implants modifications with molecules capable of speeding up the re-endothelialization process have been proposed over the last years. However, clinical trials of angiogenic factor delivery have been mostly disappointing, underscoring the need to investigate a wider array of angiogenic factors. In this work, a drug release system based on a type I collagen hydrogel has been proposed for the controlled release of Pleiotrophin (PTN), a cytokine known for its pro-angiogenetic effects. Heparin, in virtue of its ability to sequester, protect and release growth factors, has been used to better control the release of PTN. Performances of the PTN drug delivery system on endothelial (ECs) and smooth muscle cells (SMCs) have been investigated. Structural characterization (mechanical tests and immunofluorescent analyses of the collagen fibers) was performed on the gels to assess if heparin caused changes in their mechanical behavior. The release of PTN from the different gel formulations has been analyzed using a PTN-specific ELISA assay. Cell viability was evaluated with the Alamar Blue Cell Viability Assay on cells directly seeded on the gels (direct test) and on cells incubated with supernatant, containing the released PTN, obtained from the gels (indirect test). The effects of the different gels on the migration of both ECs and SMCs have been evaluated using a Transwell migration assay. Hemocompatibility of the gel has been assessed with a clotting/hemolysis test. Structural analyses showed that heparin did not change the structural behavior of the collagen gels. ELISA quantification demonstrated that heparin induced a constant release of PTN over time compared to other conditions. Both direct and indirect viability assays showed an increase in ECs viability while no effects were noted on SMCs. Cell migration results evidenced that the heparin/PTN-modified gels significantly increased ECs migration and decreased the SMCs one. Finally, heparin significantly increased the hemocompatibility of the collagen gels. In conclusion, the PTN-heparin-modified collagen here proposed can represent an added value for vascular medicine, able to ameliorate the biological performance, and integration of vascular grafts.
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Affiliation(s)
- Francesco Copes
- Laboratory of Human Anatomy, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy.,Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering, CHU de Quebec Research Center, Laval University, Quebec, QC, Canada
| | - Pascale Chevallier
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering, CHU de Quebec Research Center, Laval University, Quebec, QC, Canada
| | - Caroline Loy
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering, CHU de Quebec Research Center, Laval University, Quebec, QC, Canada
| | - Daniele Pezzoli
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering, CHU de Quebec Research Center, Laval University, Quebec, QC, Canada
| | - Francesca Boccafoschi
- Laboratory of Human Anatomy, Department of Health Sciences, University of Piemonte Orientale, Novara, Italy.,Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering, CHU de Quebec Research Center, Laval University, Quebec, QC, Canada
| | - Diego Mantovani
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering, CHU de Quebec Research Center, Laval University, Quebec, QC, Canada
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