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Zhang M, Zhao X. Alginate hydrogel dressings for advanced wound management. Int J Biol Macromol 2020; 162:1414-1428. [PMID: 32777428 DOI: 10.1016/j.ijbiomac.2020.07.311] [Citation(s) in RCA: 227] [Impact Index Per Article: 56.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/05/2020] [Accepted: 07/29/2020] [Indexed: 01/07/2023]
Abstract
Wound healing is a complicated and continuous process affected by several factors, and it needs an appropriate surrounding to achieve accelerated healing. At present, various wound dressings are used for wound management, such as fiber, sponge, hydrogel, foam, hydrocolloid and so on. Hydrogels can provide mechanical support and moist environment for wounds, and are widely used in biomedical field. Alginate is a natural linear polysaccharide derived from brown algae or bacteria, consisting of repeating units of β-1,4-linked D-mannuronic acid (M) and L-guluronic acid (G) in different ratios. It is widely used in biomedical and engineering fields due to its good biocompatibility and liquid absorption capacity. Alginate-based hydrogels have been used in wound dressing, tissue engineering, and drug delivery applications for decades. In this review, we summarize the recent approaches in the chemical and physical preparation and the application of alginate hydrogels in wound dressings.
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Affiliation(s)
- Miao Zhang
- Key Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Xia Zhao
- Key Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
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Thapa RK, Margolis DJ, Kiick KL, Sullivan MO. Enhanced wound healing via collagen-turnover-driven transfer of PDGF-BB gene in a murine wound model. ACS APPLIED BIO MATERIALS 2020; 3:3500-3517. [PMID: 32656505 DOI: 10.1021/acsabm.9b01147] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Wound healing is a complex biological process that requires coordinated cell proliferation, migration, and extracellular matrix production/remodeling, all of which are inhibited/delayed in chronic wounds. In this study, a formulation was developed that marries a fibrin-based, provisional-like matrix with collagen mimetic peptide (CMP)/PDGF gene-modified collagens, leading to the formation of robust gels that supported temporally controlled PDGF expression and facile application within the wound bed. Analysis employing in vitro co-gel scaffolds confirmed sustained and temporally controlled gene release based on matrix metalloproteinase (MMP) activity, with ~30% higher PDGF expression in MMP producing fibroblasts as-compared with non-MMP-expressing cells. The integration of fibrin with the gene-modified collagens resulted in co-gels that strongly supported both fibroblast cell recruitment/invasion as well as multiple aspects of the longer-term healing process. The excisional wound healing studies in mice established faster wound closure using CMP-modified PDGF polyplex-loaded co-gels, which exhibited up to 24% more wound closure (achieved with ~2 orders of magnitude lower growth factor dosing) after 9 days as compared to PDGF-loaded co-gels, and 19% more wound closure after 9 days as compared to CMP-free polyplex loaded co-gels. Moreover, minimal scar formation as well as improved collagen production, myofibroblast activity, and collagen orientation was observed following CMP-modified PDGF polyplex-loaded co-gel application on wounds. Taken together, the combined properties of the co-gels, including their stability and capacity to control both cell recruitment and cell phenotype within the murine wound bed, strongly supports the potential of the co-gel scaffolds for improved treatment of chronic non-healing wounds.
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Affiliation(s)
- Raj Kumar Thapa
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716
| | - David J Margolis
- Perelman School of Medicine, Department of Dermatology, University of Pennsylvania, Philadelphia, PA 19104
| | - Kristi L Kiick
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716
| | - Millicent O Sullivan
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716
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Yan LP, Castaño IM, Sridharan R, Kelly D, Lemoine M, Cavanagh BL, Dunne NJ, McCarthy HO, O'Brien FJ. Collagen/GAG scaffolds activated by RALA-siMMP-9 complexes with potential for improved diabetic foot ulcer healing. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 114:111022. [PMID: 32993972 DOI: 10.1016/j.msec.2020.111022] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 04/07/2020] [Accepted: 04/26/2020] [Indexed: 02/06/2023]
Abstract
Impaired wound healing of diabetic foot ulcers has been linked to high MMP-9 levels at the wound site. Strategies aimed at the simultaneous downregulation of the MMP-9 level in situ and the regeneration of impaired tissue are critical for improved diabetic foot ulcer (DFU) healing. To fulfil this aim, collagen/GAG (Col/GAG) scaffolds activated by MMP-9-targeting siRNA (siMMP-9) were developed in this study. The siMMP-9 complexes were successfully formed by mixing the RALA cell penetrating peptide with siMMP-9. The complexes formulated at N:P ratios of 6 to 15 had a diameter around 100 nm and a positive zeta potential about 40 mV, making them ideal for cellular uptake. In 2 dimensional (2D) culture of human fibroblasts, the cellular uptake of the complexes surpassed 60% and corresponded to a 60% reduction in MMP-9 gene expression in low glucose culture. In high glucose culture, which induces over-expression of MMP-9 and therefore serves as an in vitro model mimicking conditions in DFU, the MMP-9 gene could be downregulated by around 90%. In the 3D culture of fibroblasts, the siMMP-9 activated Col/GAG scaffolds displayed excellent cytocompatibility and ~60% and 40% MMP-9 gene downregulation in low and high glucose culture, respectively. When the siMMP-9 complexes were applied to THP-1 macrophages, the primary cell type producing MMP-9 in DFU, MMP-9 gene expression was significantly reduced by 70% and 50% for M0 and M1 subsets, in 2D culture. In the scaffolds, the MMP-9 gene and protein level of M1 macrophages decreased by around 50% and 30% respectively. Taken together, this study demonstrates that the RALA-siMMP-9 activated Col/GAG scaffolds possess high potential as a promising regenerative platform for improved DFU healing.
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Affiliation(s)
- Le-Ping Yan
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland; Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin (TCD), Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI, Dublin, Ireland.
| | - Irene Mencía Castaño
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin (TCD), Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI, Dublin, Ireland
| | - Rukmani Sridharan
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin (TCD), Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI, Dublin, Ireland
| | - Domhnall Kelly
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin (TCD), Dublin, Ireland
| | - Mark Lemoine
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin (TCD), Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI, Dublin, Ireland
| | - Brenton L Cavanagh
- Cellular and Molecular Imaging Core, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Nicholas J Dunne
- School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin, Ireland
| | - Helen O McCarthy
- School of Pharmacy, Queen's University Belfast, Belfast BT9 7BL, UK
| | - Fergal J O'Brien
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland; Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin (TCD), Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI, Dublin, Ireland.
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The Treatment of Impaired Wound Healing in Diabetes: Looking among Old Drugs. Pharmaceuticals (Basel) 2020; 13:ph13040060. [PMID: 32244718 PMCID: PMC7243111 DOI: 10.3390/ph13040060] [Citation(s) in RCA: 173] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 03/27/2020] [Accepted: 03/29/2020] [Indexed: 12/19/2022] Open
Abstract
Chronic wounds often occur in patients with diabetes mellitus due to the impairment of wound healing. This has negative consequences for both the patient and the medical system and considering the growing prevalence of diabetes, it will be a significant medical, social, and economic burden in the near future. Hence, the need for therapeutic alternatives to the current available treatments that, although various, do not guarantee a rapid and definite reparative process, appears necessary. We here analyzed current treatments for wound healing, but mainly focused the attention on few classes of drugs that are already in the market with different indications, but that have shown in preclinical and few clinical trials the potentiality to be used in the treatment of impaired wound healing. In particular, repurposing of the antiglycemic agents dipeptidylpeptidase 4 (DPP4) inhibitors and metformin, but also, statins and phenyotin have been analyzed. All show encouraging results in the treatment of chronic wounds, but additional, well designed studies are needed to allow these drugs access to the clinics in the therapy of impaired wound healing.
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Li Y, Xu T, Tu Z, Dai W, Xue Y, Tang C, Gao W, Mao C, Lei B, Lin C. Bioactive antibacterial silica-based nanocomposites hydrogel scaffolds with high angiogenesis for promoting diabetic wound healing and skin repair. Am J Cancer Res 2020; 10:4929-4943. [PMID: 32308759 PMCID: PMC7163448 DOI: 10.7150/thno.41839] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 03/06/2020] [Indexed: 12/18/2022] Open
Abstract
Diabetic wound repair and skin regeneration remains a worldwide challenge due to the impaired functionality of re-vascularization. Methods: This study reports a bioactive self-healing antibacterial injectable dual-network silica-based nanocomposite hydrogel scaffolds that can significantly enhance the diabetic wound healing/skin tissue formation through promoting early angiogenesis without adding any bioactive factors. The nanocomposite scaffold comprises a main network of polyethylene glycol diacrylate (PEGDA) forming scaffolds, with an auxiliary dynamic network formed between bioactive glass nanoparticles containing copper (BGNC) and sodium alginate (ALG) (PABC scaffolds). Results: PABC scaffolds exhibit the biomimetic elastomeric mechanical properties, excellent injectabilities, self-healing behavior, as well as the robust broad-spectrum antibacterial activity. Importantly, PABC hydrogel significantly promoted the viability, proliferation and angiogenic ability of endothelial progenitor cells (EPCs) in vitro. In vivo, PABC hydrogel could efficiently restore blood vessels networks through enhancing HIF-1α/VEGF expression and collagen matrix deposition in the full-thickness diabetic wound, and significantly accelerate wound healing and skin tissue regeneration. Conclusion: The prominent multifunctional properties and angiogenic capacity of PABC hydrogel scaffolds enable their promising applications in angiogenesis-related regenerative medicine.
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56
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Natural polymeric biomaterials in growth factor delivery for treating diabetic foot ulcers. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2019.101385] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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57
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Dolati S, Yousefi M, Pishgahi A, Nourbakhsh S, Pourabbas B, Shakouri SK. Prospects for the application of growth factors in wound healing. Growth Factors 2020; 38:25-34. [PMID: 33148072 DOI: 10.1080/08977194.2020.1820499] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
As the largest organ of the body, human skin is multifunctional and enjoys two layers, the epidermis and the dermis, the separation of which is performed by a basement membrane zone. Skin protects the body against mechanical forces and infections. Skin wounds represent large and growing challenges to the healthcare systems globally. Skin wound healing, as a protective shield for the body against the external environment, includes interactions among cell types, the neurovascular system, cytokines, and matrix remodeling. Growth factors (GFs) affect the microenvironment of the wound, and cause rises in cell differentiation, proliferation, and migration. Administrating exogenous GFs has revealed potential in enhancing wound healing outcomes. The use of human GFs in the field of wound healing is becoming gradually more interesting, because of the low-invasive techniques required for their use. Reviewed here are the literatures on the healing of skin wounds with emphasize on the role of GFs and their future prospects, containing profits, and probable long-standing side effects accompanied with their use.
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Affiliation(s)
- Sanam Dolati
- Physical Medicine and Rehabilitation Research Center, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Yousefi
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Alireza Pishgahi
- Physical Medicine and Rehabilitation Research Center, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Physical Medicine and Rehabilitation, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Salman Nourbakhsh
- School of Physical and Occupational Therapy, McGill University, Montreal, Canada
| | - Behzad Pourabbas
- Department of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
| | - Seyed Kazem Shakouri
- Physical Medicine and Rehabilitation Research Center, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Physical Medicine and Rehabilitation, Tabriz University of Medical Sciences, Tabriz, Iran
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58
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Nour S, Baheiraei N, Imani R, Khodaei M, Alizadeh A, Rabiee N, Moazzeni SM. A review of accelerated wound healing approaches: biomaterial- assisted tissue remodeling. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2019; 30:120. [PMID: 31630272 DOI: 10.1007/s10856-019-6319-6] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Accepted: 10/08/2019] [Indexed: 05/17/2023]
Abstract
Nowadays, due to a growing number of tissue injuries, in particular, skin wounds, induction and promotion of tissue healing responses can be considered as a crucial step towards a complete regeneration. Recently, biomaterial design has been oriented towards promoting a powerful, effective, and successful healing. Biomaterials with wound management abilities have been developed for different applications such as providing a native microenvironment and supportive matrices that induce the growth of tissue, creating physical obstacles against microbial contamination, and to be used as delivery systems for therapeutic reagents. Until now, numerous strategies aiming to accelerate the wound healing process have been utilized and studied with their own pros and cons. In this review, tissue remodeling phenomena, wound healing mechanisms, and their related factors will be discussed. In addition, different methods for induction and acceleration of healing via cell therapy, bioactive therapeutic delivery, and/or biomaterial-based approaches will be reviewed.
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Affiliation(s)
- Shirin Nour
- Department of Biomedical Engineering, Amirkabir University of Technology (polytechnic of Tehran), Tehran, Iran
| | - Nafiseh Baheiraei
- Tissue Engineering and Applied Cell Sciences Division, Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
| | - Rana Imani
- Department of Biomedical Engineering, Amirkabir University of Technology (polytechnic of Tehran), Tehran, Iran
| | - Mohammad Khodaei
- Department of Materials Science and Engineering, Golpayegan University of Technology, Golpayegan, Iran
| | - Akram Alizadeh
- Department of Tissue Engineering and Applied Cell Sciences, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Navid Rabiee
- Department of Chemistry, Shahid Beheshti University, Tehran, Iran
| | - S Mohammad Moazzeni
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
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59
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Oh JS, Lee EJ. Engineered dressing of hybrid chitosan-silica for effective delivery of keratin growth factor and acceleration of wound healing. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 103:109815. [DOI: 10.1016/j.msec.2019.109815] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 05/10/2019] [Accepted: 05/27/2019] [Indexed: 01/15/2023]
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60
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Caronia JM, Sorensen DW, Leslie HM, van Berlo JH, Azarin SM. Adhesive thermosensitive gels for local delivery of viral vectors. Biotechnol Bioeng 2019; 116:2353-2363. [PMID: 31038193 DOI: 10.1002/bit.27007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 03/27/2019] [Accepted: 04/18/2019] [Indexed: 12/18/2022]
Abstract
Local delivery of viral vectors can enhance the efficacy of therapies by selectively affecting necessary tissues and reducing the required vector dose. Pluronic F127 is a thermosensitive polymer that undergoes a solution-gelation (sol-gel) transition as temperature increases and can deliver vectors without damaging them. While pluronics can be spread over large areas, such as the surface of an organ, before gelation, they lack sufficient adhesivity to remain attached to some tissues, such as the surface of the heart or mucosal surfaces. Here, we utilized blends of pluronic F127 and polycarbophil (PCB), a mucoadhesive agent, to provide the necessary adhesivity for local delivery of viral vectors to the cardiac muscle. The effects of PCB concentration on adhesive properties, sol-gel temperature transition and cytocompatibility were evaluated. Rheological studies showed that PCB decreased the sol-gel transition temperature at concentrations >1% and increased the adhesive properties of the gel. Furthermore, these gels were able to deliver viral vectors and transduce cells in vitro and in vivo in a neonatal mouse apical resection model. These gels could be a useful platform for delivering viral vectors over the surface of organs where increased adhesivity is required.
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Affiliation(s)
- Jeanette M Caronia
- Department of Biomedical Engineering, University of Minnesota, Minneapolis, Minnesota
| | - Daniel W Sorensen
- Department of Genetics, Cell Biology and Development, University of Minnesota, Minneapolis, Minnesota.,Stem Cell Institute, University of Minnesota, Minneapolis, Minnesota
| | - Hope M Leslie
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota
| | - Jop H van Berlo
- Stem Cell Institute, University of Minnesota, Minneapolis, Minnesota.,Department of Medicine, Cardiovascular Division and Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota
| | - Samira M Azarin
- Stem Cell Institute, University of Minnesota, Minneapolis, Minnesota.,Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota
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61
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Wang W, Yu Y, Jiang Y, Qu J, Niu L, Yang J, Li M. Silk fibroin scaffolds loaded with angiogenic genes in adenovirus vectors for tissue regeneration. J Tissue Eng Regen Med 2019; 13:715-728. [PMID: 30770653 DOI: 10.1002/term.2819] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 01/20/2019] [Accepted: 02/13/2019] [Indexed: 12/29/2022]
Abstract
Vascularization remains a critical challenge in dermal tissue regeneration. In this study, a vascular endothelial growth factor (VEGF165) and angiopoietin-1 (Ang-1) dual gene coexpression vector that encoded green fluorescent protein (GFP) was constructed from an arginine-glycine-aspartic acid-modified adenovirus. Silk fibroin (SF) scaffolds loaded with adenovirus vectors were fabricated by freeze-drying method. In vitro, the human endothelial-derived cell line EA.hy926 was infected with adenovirus vectors and then expressed GFP, secreted VEGF165 and Ang-1, and promoted cell proliferation effectively. The VEGF165 and Ang-1 genes loaded in the SF scaffolds significantly promoted the formation of abundant microvascular networks in the chick embryo chorioallantoic membrane. In vivo, angiogenic genes loaded in the scaffolds promoted vascularization and collagen deposition in scaffolds, thus effectively accelerating dermal tissue regeneration in a dorsal full-thickness skin defect wound model in Sprague-Dawley rats. In conclusion, SF scaffolds loaded with arginine-glycine-aspartic acid-modified adenovirus vectors encoding VEGF165 and Ang-1 could stimulate the formation of vascular networks through the effective expression of target genes in vascular endothelial cells, thereby accelerating the regeneration of dermal tissue.
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Affiliation(s)
- Weiwei Wang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, China
| | - Yanni Yu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, China
| | - Yi Jiang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, China
| | - Jing Qu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, China
| | - Longxing Niu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, China
| | - Jicheng Yang
- Cell and Molecular Biology Institute, College of Medicine, Soochow University, Suzhou, China
| | - Mingzhong Li
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, China
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Mandla S, Davenport Huyer L, Radisic M. Review: Multimodal bioactive material approaches for wound healing. APL Bioeng 2018; 2:021503. [PMID: 31069297 PMCID: PMC6481710 DOI: 10.1063/1.5026773] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 05/28/2018] [Indexed: 01/13/2023] Open
Abstract
Wound healing is a highly complex process of tissue repair that relies on the synergistic effect of a number of different cells, cytokines, enzymes, and growth factors. A deregulation in this process can lead to the formation of a non-healing chronic ulcer. Current treatment options, such as collagen wound dressings, are unable to meet the demand set by the wound environment. Therefore, a multifaceted bioactive dressing is needed to elicit a targeted affect. Wound healing strategies seek to develop a targeted effect through the delivery of a bioactive molecule to the wound by a hydrogel or a polymeric scaffold. This review examines current biomaterial and small molecule-based approaches that seek to develop a bioactive material for targeted wound therapy and accepted wound healing models for testing material efficacy.
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Affiliation(s)
- Serena Mandla
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | | | - Milica Radisic
- Author to whom correspondence should be addressed: . Tel.: +1-416-946-5295. Fax: +1-416-978-4317
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63
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Xu J, Min D, Guo G, Liao X, Fu Z. Experimental study of epidermal growth factor and acidic fibroblast growth factor in the treatment of diabetic foot wounds. Exp Ther Med 2018; 15:5365-5370. [PMID: 29904416 DOI: 10.3892/etm.2018.6131] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Accepted: 01/21/2018] [Indexed: 12/24/2022] Open
Abstract
The aim of the present study was to investigate the effect of epidermal growth factor (EGF) and acidic fibroblast growth factor (aFGF) on the healing of diabetic foot wounds. A total of 199 patients with diabetic foot ulcers were recruited and randomly divided into four groups: A recombinant human EGF group (n=50), an aFGF group (n=50), a combined EGF and aFGF group (n=50) and a normal saline control group (n=49). Patients in all groups received a daily dressing change and growth factor reagents were applied topically when dressing. To observe the time required for each stage of wound healing, the epidermal healing rate and granulation tissue growth were recorded. Following 3-4 days of treatment, the wound healing stage was similar in all groups. Later stages (following 4 days) of wound healing were achieved significantly faster in the combined group compared with the control group (P<0.05). The rate of wound healing in the EGF group was similar to that observed in the combination group. No significant difference was observed between the EGF and aFGF groups during the initial period of wound healing. However, in the later stage (following 4 days), the combined use of recombinant human EGF and aFGF had a marked positive effect on wound healing when compared with the control group. Growth factors have extensive biological activities with functions including promoting cell proliferation as well as rehabilitating and regenerating tissues, which serve important roles in wound healing.
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Affiliation(s)
- Jiasheng Xu
- Burn Center, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330001, P.R. China.,Graduate School of Nanchang University, Nanchang, Jiangxi 330001, P.R. China
| | - Dinghong Min
- Burn Center, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330001, P.R. China
| | - Guanghua Guo
- Burn Center, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330001, P.R. China
| | - Xincheng Liao
- Burn Center, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330001, P.R. China
| | - Zhonghua Fu
- Burn Center, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330001, P.R. China
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冼 文, 王 雪, 张 琳. [Construction and bioactivity evaluation of hepatocyte growth factor-loaded poly (lactic-co-glycolic acid) nanoparticles]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2018; 38:217-223. [PMID: 29502063 PMCID: PMC6743881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Indexed: 11/05/2023]
Abstract
OBJECTIVE To explore the optimum conditions for preparing poly(lactic-co-glycolic) acid (PLGA) nanoparticles and evaluate the bioactivity of hepatocyte growth factor (HGF)-loaded PLGA nanoparticles. METHODS Bovine serum albumin (BSA)-loaded PLGA nanoparticles were prepared using a double emulsion-solvent evaporation method. The preparation process of nanoparticles was optimized by orthogonal test with the particle size, encapsulation efficiency (EE), drug loading (DD), and recovery as the indexes. HGF-loaded nanoparticles were then prepared under the optimized conditions. The EE, DD and release characteristics of BSA?loaded nanoparticles and HGF-loaded nanoparticles were evaluated using a BCA kit and HGF ELISA kit. The bioactivity of HGF-loaded nanoparticles was evaluated using CCK8 proliferation assay. RESULTS The HGF-loaded nanoparticles prepared under the optimized conditions had a uniform size with a mean diameter of 234.4∓4.8 nm, an EE of (77.75∓3.04)% and a recovery rate of (49.33∓9.34)%. The in vitro release curve highlighted an initial burst drug release followed by sustained release from the nanoparticles. HGF-loaded nanoparticles obviously promoted the proliferation of Hacat keratinocytes in vitro. CONCLUSION HGF-loaded nanoparticles prepared using double emulsion?solvent evaporation method under optimized conditions possesses a high EE with a good sustained drug release profile and a good bioactivity.
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Affiliation(s)
- 文娇 冼
- />南方医科大学基础医学院组织胚胎学教研室,广东 广州 510515Department of Histology and Embryology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - 雪儿 王
- />南方医科大学基础医学院组织胚胎学教研室,广东 广州 510515Department of Histology and Embryology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - 琳 张
- />南方医科大学基础医学院组织胚胎学教研室,广东 广州 510515Department of Histology and Embryology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
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冼 文, 王 雪, 张 琳. [Construction and bioactivity evaluation of hepatocyte growth factor-loaded poly (lactic-co-glycolic acid) nanoparticles]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2018; 38:217-223. [PMID: 29502063 PMCID: PMC6743881 DOI: 10.3969/j.issn.1673-4254.2018.02.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To explore the optimum conditions for preparing poly(lactic-co-glycolic) acid (PLGA) nanoparticles and evaluate the bioactivity of hepatocyte growth factor (HGF)-loaded PLGA nanoparticles. METHODS Bovine serum albumin (BSA)-loaded PLGA nanoparticles were prepared using a double emulsion-solvent evaporation method. The preparation process of nanoparticles was optimized by orthogonal test with the particle size, encapsulation efficiency (EE), drug loading (DD), and recovery as the indexes. HGF-loaded nanoparticles were then prepared under the optimized conditions. The EE, DD and release characteristics of BSA?loaded nanoparticles and HGF-loaded nanoparticles were evaluated using a BCA kit and HGF ELISA kit. The bioactivity of HGF-loaded nanoparticles was evaluated using CCK8 proliferation assay. RESULTS The HGF-loaded nanoparticles prepared under the optimized conditions had a uniform size with a mean diameter of 234.4∓4.8 nm, an EE of (77.75∓3.04)% and a recovery rate of (49.33∓9.34)%. The in vitro release curve highlighted an initial burst drug release followed by sustained release from the nanoparticles. HGF-loaded nanoparticles obviously promoted the proliferation of Hacat keratinocytes in vitro. CONCLUSION HGF-loaded nanoparticles prepared using double emulsion?solvent evaporation method under optimized conditions possesses a high EE with a good sustained drug release profile and a good bioactivity.
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Affiliation(s)
- 文娇 冼
- />南方医科大学基础医学院组织胚胎学教研室,广东 广州 510515Department of Histology and Embryology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - 雪儿 王
- />南方医科大学基础医学院组织胚胎学教研室,广东 广州 510515Department of Histology and Embryology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - 琳 张
- />南方医科大学基础医学院组织胚胎学教研室,广东 广州 510515Department of Histology and Embryology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
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Goodarzi P, Larijani B, Alavi-Moghadam S, Tayanloo-Beik A, Mohamadi-Jahani F, Ranjbaran N, Payab M, Falahzadeh K, Mousavi M, Arjmand B. Mesenchymal Stem Cells-Derived Exosomes for Wound Regeneration. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1119:119-131. [DOI: 10.1007/5584_2018_251] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Park JW, Hwang SR, Yoon IS. Advanced Growth Factor Delivery Systems in Wound Management and Skin Regeneration. Molecules 2017; 22:E1259. [PMID: 28749427 PMCID: PMC6152378 DOI: 10.3390/molecules22081259] [Citation(s) in RCA: 212] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 07/21/2017] [Accepted: 07/25/2017] [Indexed: 01/18/2023] Open
Abstract
Growth factors are endogenous signaling molecules that regulate cellular responses required for wound healing processes such as migration, proliferation, and differentiation. However, exogenous application of growth factors has limited effectiveness in clinical settings due to their low in vivo stability, restricted absorption through skin around wound lesions, elimination by exudation prior to reaching the wound area, and other unwanted side effects. Sophisticated systems to control the spatio-temporal delivery of growth factors are required for the effective and safe use of growth factors as regenerative treatments in clinical practice, such as biomaterial-based drug delivery systems (DDSs). The current review describes the roles of growth factors in wound healing, their clinical applications for the treatment of chronic wounds, and advances in growth factor-loaded DDSs for enhanced wound healing, focusing on micro- and nano-particulate systems, scaffolds, hydrogels, and other miscellaneous systems.
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Affiliation(s)
- Jin Woo Park
- Department of Pharmacy, College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Muan-gun, Jeonnam 58554, Korea.
| | - Seung Rim Hwang
- Department of Pharmacy, College of Pharmacy, Chosun University, Dong-gu, Gwangju 61452, Korea.
| | - In-Soo Yoon
- College of Pharmacy, Pusan National University, Geumjeong-gu, Busan 46241, Korea.
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