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Westphal JA, Bryan AE, Krutko M, Esfandiari L, Schutte SC, Harris GM. Innervation of an Ultrasound-Mediated PVDF-TrFE Scaffold for Skin-Tissue Engineering. Biomimetics (Basel) 2023; 9:2. [PMID: 38275450 PMCID: PMC11154284 DOI: 10.3390/biomimetics9010002] [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: 11/08/2023] [Revised: 12/05/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024] Open
Abstract
In this work, electrospun polyvinylidene-trifluoroethylene (PVDF-TrFE) was utilized for its biocompatibility, mechanics, and piezoelectric properties to promote Schwann cell (SC) elongation and sensory neuron (SN) extension. PVDF-TrFE electrospun scaffolds were characterized over a variety of electrospinning parameters (1, 2, and 3 h aligned and unaligned electrospun fibers) to determine ideal thickness, porosity, and tensile strength for use as an engineered skin tissue. PVDF-TrFE was electrically activated through mechanical deformation using low-intensity pulsed ultrasound (LIPUS) waves as a non-invasive means to trigger piezoelectric properties of the scaffold and deliver electric potential to cells. Using this therapeutic modality, neurite integration in tissue-engineered skin substitutes (TESSs) was quantified including neurite alignment, elongation, and vertical perforation into PVDF-TrFE scaffolds. Results show LIPUS stimulation promoted cell alignment on aligned scaffolds. Further, stimulation significantly increased SC elongation and SN extension separately and in coculture on aligned scaffolds but significantly decreased elongation and extension on unaligned scaffolds. This was also seen in cell perforation depth analysis into scaffolds which indicated LIPUS enhanced perforation of SCs, SNs, and cocultures on scaffolds. Taken together, this work demonstrates the immense potential for non-invasive electric stimulation of an in vitro tissue-engineered-skin model.
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Affiliation(s)
- Jennifer A. Westphal
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA; (J.A.W.); (M.K.); (L.E.); (S.C.S.)
| | - Andrew E. Bryan
- Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA;
| | - Maksym Krutko
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA; (J.A.W.); (M.K.); (L.E.); (S.C.S.)
| | - Leyla Esfandiari
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA; (J.A.W.); (M.K.); (L.E.); (S.C.S.)
- Department of Environmental and Public Health Sciences, University of Cincinnati, Cincinnati, OH 45267, USA
- Department of Electrical and Computer Science, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Stacey C. Schutte
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA; (J.A.W.); (M.K.); (L.E.); (S.C.S.)
| | - Greg M. Harris
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA; (J.A.W.); (M.K.); (L.E.); (S.C.S.)
- Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA;
- Neuroscience Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH 45221, USA
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Li Z, Du T, Ruan C, Niu X. Bioinspired mineralized collagen scaffolds for bone tissue engineering. Bioact Mater 2021; 6:1491-1511. [PMID: 33294729 PMCID: PMC7680706 DOI: 10.1016/j.bioactmat.2020.11.004] [Citation(s) in RCA: 108] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 10/20/2020] [Accepted: 11/02/2020] [Indexed: 12/13/2022] Open
Abstract
Successful regeneration of large segmental bone defects remains a major challenge in clinical orthopedics, thus it is of important significance to fabricate a suitable alternative material to stimulate bone regeneration. Due to their excellent biocompatibility, sufficient mechanical strength, and similar structure and composition of natural bone, the mineralized collagen scaffolds (MCSs) have been increasingly used as bone substitutes via tissue engineering approaches. Herein, we thoroughly summarize the state of the art of MCSs as tissue-engineered scaffolds for acceleration of bone repair, including their fabrication methods, critical factors for osteogenesis regulation, current opportunities and challenges in the future. First, the current fabrication methods for MCSs, mainly including direct mineral composite, in-situ mineralization and 3D printing techniques, have been proposed to improve their biomimetic physical structures in this review. Meanwhile, three aspects of physical (mechanics and morphology), biological (cells and growth factors) and chemical (composition and cross-linking) cues are described as the critical factors for regulating the osteogenic feature of MCSs. Finally, the opportunities and challenges associated with MCSs as bone tissue-engineered scaffolds are also discussed to point out the future directions for building the next generation of MCSs that should be endowed with satisfactorily mimetic structures and appropriately biological characters for bone regeneration.
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Affiliation(s)
- Zhengwei Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, PR China
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, PR China
| | - Tianming Du
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, PR China
| | - Changshun Ruan
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, PR China
| | - Xufeng Niu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, PR China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100083, PR China
- Research Institute of Beihang University in Shenzhen, Shenzhen, 518057, PR China
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Du W, Zhang Z, Gao W, Li Z. Porous organosilicone modified gelatin hybrids with controllable and homogeneous
in vitro
degradation behaviors for potential application as skin regeneration scaffold. POLYM INT 2019. [DOI: 10.1002/pi.5832] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Weining Du
- National Engineering Laboratory for Clean Technology of Leather ManufactureSichuan University Chengdu China
- Key Laboratory of Leather Chemistry and Engineering of Ministry of EducationSichuan University Chengdu China
| | - Zetian Zhang
- National Engineering Laboratory for Clean Technology of Leather ManufactureSichuan University Chengdu China
- Key Laboratory of Leather Chemistry and Engineering of Ministry of EducationSichuan University Chengdu China
| | - Wenwei Gao
- National Engineering Laboratory for Clean Technology of Leather ManufactureSichuan University Chengdu China
- Key Laboratory of Leather Chemistry and Engineering of Ministry of EducationSichuan University Chengdu China
| | - Zhengjun Li
- National Engineering Laboratory for Clean Technology of Leather ManufactureSichuan University Chengdu China
- Key Laboratory of Leather Chemistry and Engineering of Ministry of EducationSichuan University Chengdu China
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Gianino E, Miller C, Gilmore J. Smart Wound Dressings for Diabetic Chronic Wounds. Bioengineering (Basel) 2018; 5:E51. [PMID: 29949930 PMCID: PMC6163915 DOI: 10.3390/bioengineering5030051] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 06/13/2018] [Accepted: 06/19/2018] [Indexed: 12/31/2022] Open
Abstract
Given their severity and non-healing nature, diabetic chronic wounds are a significant concern to the 30.3 million Americans diagnosed with diabetes mellitus (2015). Peripheral arterial diseases, neuropathy, and infection contribute to the development of these wounds, which lead to an increased incidence of lower extremity amputations. Early recognition, debridement, offloading, and controlling infection are imperative for timely treatment. However, wound characterization and treatment are highly subjective and based largely on the experience of the treating clinician. Many wound dressings have been designed to address particular clinical presentations, but a prescriptive method is lacking for identifying the particular state of chronic, non-healing wounds. The authors suggest that recent developments in wound dressings and biosensing may allow for the quantitative, real-time representation of the wound environment, including exudate levels, pathogen concentrations, and tissue regeneration. Development of such sensing capability could enable more strategic, personalized care at the onset of ulceration and limit the infection leading to amputation. This review presents an overview of the pathophysiology of diabetic chronic wounds, a brief summary of biomaterial wound dressing treatment options, and biosensor development for biomarker sensing in the wound environment.
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Affiliation(s)
- Elizabeth Gianino
- Bioengineering Department, Clemson University, Clemson, SC 29632, USA.
| | - Craig Miller
- Bioengineering Department, Clemson University, Clemson, SC 29632, USA.
| | - Jordon Gilmore
- Bioengineering Department, Clemson University, Clemson, SC 29632, USA.
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Sheikholeslam M, Wright MEE, Jeschke MG, Amini-Nik S. Biomaterials for Skin Substitutes. Adv Healthc Mater 2018; 7:10.1002/adhm.201700897. [PMID: 29271580 PMCID: PMC7863571 DOI: 10.1002/adhm.201700897] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 10/13/2017] [Indexed: 12/13/2022]
Abstract
Patients with extensive burns rely on the use of tissue engineered skin due to a lack of sufficient donor tissue, but it is a challenge to identify reliable and economical scaffold materials and donor cell sources for the generation of a functional skin substitute. The current review attempts to evaluate the performance of the wide range of biomaterials available for generating skin substitutes, including both natural biopolymers and synthetic polymers, in terms of tissue response and potential for use in the operating room. Natural biopolymers display an improved cell response, while synthetic polymers provide better control over chemical composition and mechanical properties. It is suggested that not one material meets all the requirements for a skin substitute. Rather, a composite scaffold fabricated from both natural and synthetic biomaterials may allow for the generation of skin substitutes that meet all clinical requirements including a tailored wound size and type, the degree of burn, the patient age, and the available preparation technique. This review aims to be a valuable directory for researchers in the field to find the optimal material or combination of materials based on their specific application.
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Affiliation(s)
- Mohammadali Sheikholeslam
- Sunnybrook Research Institute, University of Toronto, Toronto, ON, Canada
- Department of Surgery, Division of Plastic and Reconstructive Surgery, University of Toronto, Toronto, ON, Canada
| | - Meghan E E Wright
- Institute of Biomaterials & Biomedical Engineering, University of Toronto, Toronto, ON, Canada
| | - Marc G Jeschke
- Sunnybrook Research Institute, University of Toronto, Toronto, ON, Canada
- Department of Surgery, Division of Plastic and Reconstructive Surgery, University of Toronto, Toronto, ON, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Saeid Amini-Nik
- Sunnybrook Research Institute, University of Toronto, Toronto, ON, Canada
- Department of Surgery, Division of Plastic and Reconstructive Surgery, University of Toronto, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
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Ahmad Z, Shepherd JH, Shepherd DV, Ghose S, Kew SJ, Cameron RE, Best SM, Brooks RA, Wardale J, Rushton N. Effect of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide and N-hydroxysuccinimide concentrations on the mechanical and biological characteristics of cross-linked collagen fibres for tendon repair. Regen Biomater 2015; 2:77-85. [PMID: 26816633 PMCID: PMC4669024 DOI: 10.1093/rb/rbv005] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 04/02/2015] [Accepted: 04/02/2015] [Indexed: 11/28/2022] Open
Abstract
Reconstituted type I collagen fibres have received considerable interest as tendon implant materials due to their chemical and structural similarity to the native tissue. Fibres produced through a semi-continuous extrusion process were cross-linked with different concentrations of the zero-length cross-linker 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) in combination with N-hydroxysuccinimide (NHS). Tensile properties of the fibres were considered, along with imaging of both surface structure and fibrillar alignment. Resistance of the fibres to bacterial collagenase was investigated and fibre sections seeded with human tendon cells for biological characterization, including cell adhesion and proliferation. The work clearly demonstrated that whilst the concentration of EDC and NHS had no significant effect on the mechanics, a higher concentration was associated with higher collagenase resistance, but also provided a less attractive surface for cell adhesion and proliferation. A lower cross-linking concentration offered a more biocompatible material without reduction in mechanics and with a potentially more optimal degradability.
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Affiliation(s)
- Zafar Ahmad
- Orthopaedic Research Unit, Department of Surgery University of Cambridge, Addenbrooke’s Hospital, Cambridge, CB2 0QQ, UK; Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK; Tigenix Ltd, Cambridge, CB4 0FY, UK
| | - Jennifer H. Shepherd
- Orthopaedic Research Unit, Department of Surgery University of Cambridge, Addenbrooke’s Hospital, Cambridge, CB2 0QQ, UK; Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK; Tigenix Ltd, Cambridge, CB4 0FY, UK
| | - David V. Shepherd
- Orthopaedic Research Unit, Department of Surgery University of Cambridge, Addenbrooke’s Hospital, Cambridge, CB2 0QQ, UK; Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK; Tigenix Ltd, Cambridge, CB4 0FY, UK
| | - Siddhartha Ghose
- Orthopaedic Research Unit, Department of Surgery University of Cambridge, Addenbrooke’s Hospital, Cambridge, CB2 0QQ, UK; Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK; Tigenix Ltd, Cambridge, CB4 0FY, UK
| | - Simon J. Kew
- Orthopaedic Research Unit, Department of Surgery University of Cambridge, Addenbrooke’s Hospital, Cambridge, CB2 0QQ, UK; Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK; Tigenix Ltd, Cambridge, CB4 0FY, UK
| | - Ruth E. Cameron
- Orthopaedic Research Unit, Department of Surgery University of Cambridge, Addenbrooke’s Hospital, Cambridge, CB2 0QQ, UK; Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK; Tigenix Ltd, Cambridge, CB4 0FY, UK
| | - Serena M. Best
- Orthopaedic Research Unit, Department of Surgery University of Cambridge, Addenbrooke’s Hospital, Cambridge, CB2 0QQ, UK; Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK; Tigenix Ltd, Cambridge, CB4 0FY, UK
| | - Roger A. Brooks
- Orthopaedic Research Unit, Department of Surgery University of Cambridge, Addenbrooke’s Hospital, Cambridge, CB2 0QQ, UK; Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK; Tigenix Ltd, Cambridge, CB4 0FY, UK
| | - John Wardale
- Orthopaedic Research Unit, Department of Surgery University of Cambridge, Addenbrooke’s Hospital, Cambridge, CB2 0QQ, UK; Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK; Tigenix Ltd, Cambridge, CB4 0FY, UK
| | - Neil Rushton
- Orthopaedic Research Unit, Department of Surgery University of Cambridge, Addenbrooke’s Hospital, Cambridge, CB2 0QQ, UK; Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK; Tigenix Ltd, Cambridge, CB4 0FY, UK
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Shepherd D, Shepherd J, Ghose S, Kew S, Cameron R, Best S. The process of EDC-NHS Cross-linking of reconstituted collagen fibres increases collagen fibrillar order and alignment. APL MATERIALS 2015; 3:014902. [PMID: 25506518 PMCID: PMC4262854 DOI: 10.1063/1.4900887] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We describe the production of collagen fibre bundles through a multi-strand, semi-continuous extrusion process. Cross-linking using an EDC (1-ethyl-3-(3-dimethylaminopropyl)carbodiimide), NHS (N-hydroxysuccinimide) combination was considered. Atomic Force Microscopy (AFM) and Raman spectroscopy focused on how cross-linking affected the collagen fibrillar structure. In the cross-linked fibres, a clear fibrillar structure comparable to native collagen was observed which was not observed in the non-cross-linked fibre. The amide III doublet in the Raman spectra provided additional evidence of alignment in the cross-linked fibres. Raman spectroscopy also indicated no residual polyethylene glycol (from the fibre forming buffer) or water in any of the fibres.
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Affiliation(s)
- D.V. Shepherd
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - J.H. Shepherd
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - S. Ghose
- Tigenix Ltd, Byron House, Cambridge, UK
| | - S.J. Kew
- Tigenix Ltd, Byron House, Cambridge, UK
| | - R.E. Cameron
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - S.M. Best
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
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Bakarich SE, Gorkin R, in het Panhuis M, Spinks GM. Three-dimensional printing fiber reinforced hydrogel composites. ACS APPLIED MATERIALS & INTERFACES 2014; 6:15998-6006. [PMID: 25197745 DOI: 10.1021/am503878d] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
An additive manufacturing process that combines digital modeling and 3D printing was used to prepare fiber reinforced hydrogels in a single-step process. The composite materials were fabricated by selectively pattering a combination of alginate/acrylamide gel precursor solution and an epoxy based UV-curable adhesive (Emax 904 Gel-SC) with an extrusion printer. UV irradiation was used to cure the two inks into a single composite material. Spatial control of fiber distribution within the digital models allowed for the fabrication of a series of materials with a spectrum of swelling behavior and mechanical properties with physical characteristics ranging from soft and wet to hard and dry. A comparison with the "rule of mixtures" was used to show that the swollen composite materials adhere to standard composite theory. A prototype meniscus cartilage was prepared to illustrate the potential application in bioengineering.
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Affiliation(s)
- Shannon E Bakarich
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, University of Wollongong , North Wollongong, New South Wales 2522, Australia
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Shepherd JH, Ghose S, Kew SJ, Moavenian A, Best SM, Cameron RE. Effect of fiber crosslinking on collagen-fiber reinforced collagen-chondroitin-6-sulfate materials for regenerating load-bearing soft tissues. J Biomed Mater Res A 2012; 101:176-84. [DOI: 10.1002/jbm.a.34317] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Revised: 05/14/2012] [Accepted: 05/15/2012] [Indexed: 11/06/2022]
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10
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Bone formation in ectopic and osteogenic tissue induced by a novel BMP-2-related peptide combined with rat tail collagen. BIOTECHNOL BIOPROC E 2010. [DOI: 10.1007/s12257-009-3130-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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12
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Zhong SP, Zhang YZ, Lim CT. Tissue scaffolds for skin wound healing and dermal reconstruction. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2010; 2:510-25. [DOI: 10.1002/wnan.100] [Citation(s) in RCA: 408] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- S. P. Zhong
- Division of Bioengineering, National University of Singapore, Singapore
| | - Y. Z. Zhang
- Department of Bioengineering, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - C. T. Lim
- Division of Bioengineering, National University of Singapore, Singapore
- Research Centre of Excellence in Mechanobiology, National University of Singapore, Singapore
- Department of Mechanical Engineering, National University of Singapore, Singapore
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Park JE, Won JI. Thermal behaviors of elastin-like polypeptides (ELPs) according to their physical properties and environmental conditions. BIOTECHNOL BIOPROC E 2009. [DOI: 10.1007/s12257-009-0112-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Dermatan sulfate as a stabilizer for protein stability in poly(lactide-co-glycolide) depot. BIOTECHNOL BIOPROC E 2009. [DOI: 10.1007/s12257-009-0058-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Isolation and biochemical characterization of collagens from seaweed pipefish, Syngnathus schlegeli. BIOTECHNOL BIOPROC E 2009. [DOI: 10.1007/s12257-009-0007-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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