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Kamal Z, Lamba AK, Faraz F, Tandon S, Datta A, Ansari N, Madni ZK, Pandey J. Effect of gamma and Ultraviolet-C sterilization on BMP-7 level of indigenously prepared demineralized freeze-dried bone allograft. Cell Tissue Bank 2024; 25:475-484. [PMID: 37578672 DOI: 10.1007/s10561-023-10103-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 07/17/2023] [Indexed: 08/15/2023]
Abstract
The presence of bone morphogenetic proteins in demineralized freeze-dried bone allograft (DFDBA) are responsible for developing hard tissues in intraosseous defects. The most common mode of sterilization of bone allografts, i.e., Gamma rays, have dramatic effects on the structural and biological properties of DFDBA, leading to loss of BMPs. Ultraviolet-C radiation is a newer approach to sterilize biodegradable scaffolds, which is simple to use and ensures efficient sterilization. However, UV-C radiation has not yet been effectively studied to sterilize bone allografts. This study aimed to compare and evaluate the effectiveness of Gamma and Ultraviolet-C rays in sterilizing indigenously prepared DFDBA and assess their effect on the quantity of BMP-7 present in the allograft. DFDBA samples from non-irradiated, gamma irradiated, and UV-C irradiated groups were tested for BMP-7 level and samples sterilized with gamma and UV-C rays were analysed for sterility testing. The estimated mean BMP-7 level was highest in non-irradiated DFDBA samples, followed by UV-C irradiated, and the lowest in gamma irradiated samples. Our study concluded that UV-C rays effectively sterilized DFDBA as indicated by negative sterility test and comprised lesser degradation of BMP-7 than gamma irradiation.
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Affiliation(s)
- Zainab Kamal
- Department of Periodontics , Maulana Azad Institute of Dental Sciences , New Delhi, 110002, India.
| | - Arundeep Kaur Lamba
- Department of Periodontics , Maulana Azad Institute of Dental Sciences , New Delhi, 110002, India
| | - Farrukh Faraz
- Department of Periodontics , Maulana Azad Institute of Dental Sciences , New Delhi, 110002, India
| | - Shruti Tandon
- Department of Periodontics , Maulana Azad Institute of Dental Sciences , New Delhi, 110002, India
| | - Archita Datta
- Department of Periodontics , Maulana Azad Institute of Dental Sciences , New Delhi, 110002, India
| | - Nasreen Ansari
- Department of Periodontics , Maulana Azad Institute of Dental Sciences , New Delhi, 110002, India
| | - Zaid Kamal Madni
- Structural Immunology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India
| | - Jaya Pandey
- Department of Periodontics , Maulana Azad Institute of Dental Sciences , New Delhi, 110002, India
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Ramaraju H, McAtee AM, Akman RE, Verga AS, Bocks ML, Hollister SJ. Sterilization effects on poly(glycerol dodecanedioate): A biodegradable shape memory elastomer for biomedical applications. J Biomed Mater Res B Appl Biomater 2023; 111:958-970. [PMID: 36479954 DOI: 10.1002/jbm.b.35205] [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: 01/26/2022] [Revised: 10/31/2022] [Accepted: 11/15/2022] [Indexed: 12/13/2022]
Abstract
Biodegradable shape memory polymers provide unique regenerative medicine approaches in minimally invasive surgeries. Once heated, thermally responsive shape memory polymer devices can be compressed, programmed to fit within a small profile, delivered in the cold programmed state, and expanded when heated to body temperature. We have previously developed a biodegradable shape memory elastomer (SME), poly(glycerol dodecanedioate) (PGD), with transition temperatures near 37°C exhibiting nonlinear elastic properties like numerous soft tissues. Using SMEs in the clinic requires disinfection and sterilization methods that conserve physiochemical, thermomechanical, and shape recovery properties. We evaluated disinfection protocols using 70% ethanol and UV254 nm for research applications and ethylene oxide (EtO) gas sterilization for clinical applications. Samples disinfected with ethanol for 0.5 and 1 min showed no changes in physiochemical material properties, but after 15 min showed slower recovery rates than controls (p < .05). EtO sterilization at 54.4°C decreased transition temperatures and shape recovery rate compared to EtO sterilization at 37.8°C (p < .01) and controls (p < .05). Aging samples for 9 months in a vacuum desiccator significantly reduced shape recovery, and the recovery rate in EtO sterilized samples compared to controls (p < .001). Cytotoxicity testing (ISO-10993.5C:2012) revealed media extractions from EtO sterilized samples, sterilized at 37.8°C, and high-density polyethylene negative control samples exhibit lower cytotoxicity (IC50) than Ethanol 1 min, UV 2 h, and EtO 54.4°C. Cell viability of NIH3T3 fibroblasts on sterilized surfaces was equivalent on EtO 37.7°C, EtO 54.4°C and Ethanol sterilized substrates. Finally, chromogenic bacterial endotoxin testing showed endotoxin levels were below the FDA prescribed levels for devices contacting blood and lymphatic tissues for ethanol 1 min, UV 120 min, EtO 37.7°C, EtO 54.4°C. These findings outline various disinfection and sterilization processes for research and pre-clinical application and provide a pathway for developing custom sterilization cycles for the translation of biomedical devices utilizing PGD shape memory polymers.
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Affiliation(s)
- Harsha Ramaraju
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Annabel M McAtee
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Ryan E Akman
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Adam S Verga
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Martin L Bocks
- UH Rainbow Babies & Children's Hospital, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Scott J Hollister
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
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Chauhan A, Alam MA, Kaur A, Malviya R. Advancements and Utilizations of Scaffolds in Tissue Engineering and Drug Delivery. Curr Drug Targets 2023; 24:13-40. [PMID: 36221880 DOI: 10.2174/1389450123666221011100235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/02/2022] [Accepted: 03/09/2022] [Indexed: 11/22/2022]
Abstract
The drug development process requires a thorough understanding of the scaffold and its three-dimensional structure. Scaffolding is a technique for tissue engineering and the formation of contemporary functioning tissues. Tissue engineering is sometimes referred to as regenerative medicine. They also ensure that drugs are delivered with precision. Information regarding scaffolding techniques, scaffolding kinds, and other relevant facts, such as 3D nanostructuring, are discussed in depth in this literature. They are specific and demonstrate localized action for a specific reason. Scaffold's acquisition nature and flexibility make it a new drug delivery technology with good availability and structural parameter management.
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Affiliation(s)
- Akash Chauhan
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Md Aftab Alam
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Awaneet Kaur
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Rishabha Malviya
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
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Chen MC, Chiu HC, Kuo PJ, Chiang CY, Fu MM, Fu E. Bone formation with functionalized 3D printed poly-ε-caprolactone scaffold with plasma-rich-fibrin implanted in critical-sized calvaria defect of rat. J Dent Sci 2021; 16:1214-1221. [PMID: 34484590 PMCID: PMC8403799 DOI: 10.1016/j.jds.2021.01.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/29/2021] [Indexed: 11/26/2022] Open
Abstract
Background/purpose Space-making is one of the essential factors for bone regeneration in severe bony defect. To test the hypothesis that an appropriately designed scaffold may be beneficial for the bone formation in defect, the new bone formed in the critical-size calvarial defect of rat was examined after implanted with a 3D-printed poly-ɛ-caprolactone (PCL) scaffold, retaining with and without plasma rich fibrin (PRF). Materials and methods Thirty-two rats were divided into four groups (control, PCL, PRF, and PCL-plus-PRF). A custom-made 3D-printed PCL scaffold, 900 μm in pore size, retaining with and without PRF, was implanted into a critical-sized calvarial defect, 6 mm in diameter. Animals were sacrificed at week-4 or 8 after implantation for assessing the new bone formation by dental radiography, micro-computed tomography (μ-CT), and histology. Results By radiography and μ-CT, significantly greater mineralization areas/volumes were observed in defects with 3D-printed scaffold groups compared to that without the scaffold in both two-time points. However, no advantage was found by adding PRF. Histology showed that bone tissues grew into the central zone of the critical defect when 3D-printed PCL scaffold was present. In contrast, for the groups without the scaffolds, new bones were formed mostly along defect borders, and the central zones of the defects were collapsed and healed with thin connective tissue. Conclusion Our results suggest that the use of a 900 μm pore size 3D-printed PCL scaffold may have the potential in facilitating the new bone formation.
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Affiliation(s)
- Min-Chia Chen
- Department of Periodontology, School of Dentistry, National Defense Medical Center and Tri-Service General Hospital, Taipei, Taiwan, ROC
| | - Hsien-Chung Chiu
- Department of Periodontology, School of Dentistry, National Defense Medical Center and Tri-Service General Hospital, Taipei, Taiwan, ROC
| | - Po-Jan Kuo
- Department of Periodontology, School of Dentistry, National Defense Medical Center and Tri-Service General Hospital, Taipei, Taiwan, ROC
| | - Cheng-Yang Chiang
- Department of Periodontology, School of Dentistry, National Defense Medical Center and Tri-Service General Hospital, Taipei, Taiwan, ROC
| | - Martin M Fu
- Department of Periodontology, School of Dentistry, National Defense Medical Center and Tri-Service General Hospital, Taipei, Taiwan, ROC
| | - Earl Fu
- Department of Dentistry, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan, ROC
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5
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Matus-Muñoz MR, Ruiz-Ramos R, Altuzar V, Beltrán HI, Palomino-Ovando MA, Mendoza-Barrera C. Fabrication and characterization of PCL/PLLA/CS composite fibers as extracellular matrix (ECM) mimetics. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1895157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Miguel R. Matus-Muñoz
- Centro de Investigación en Micro y Nanotecnología, Universidad Veracruzana, Veracruz, Mexico
| | | | - Víctor Altuzar
- Facultad de Ciencias Físico-Matemáticas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Hiram Isaac Beltrán
- Departamento de Ciencias Básicas, DCBI, Universidad Autónoma Metropolitana, Unidad Azcapotzalco, Ciudad de México, Mexico
| | | | - Claudia Mendoza-Barrera
- Facultad de Ciencias Físico-Matemáticas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
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Łopianiak I, Butruk-Raszeja BA. Evaluation of Sterilization/Disinfection Methods of Fibrous Polyurethane Scaffolds Designed for Tissue Engineering Applications. Int J Mol Sci 2020; 21:E8092. [PMID: 33142959 PMCID: PMC7663349 DOI: 10.3390/ijms21218092] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/23/2020] [Accepted: 10/25/2020] [Indexed: 12/20/2022] Open
Abstract
Sterilization of a material carries the risk of unwanted changes in physical and chemical structure. The choice of method is a challenge-the process must be efficient, without significantly changing the properties of the material. In the presented studies, we analyzed the effect of selected sterilization/disinfection techniques on the properties of nanofibrous polyurethane biomaterial. Both radiation techniques (UV, gamma, e-beam) and 20 minutes' contact with 70% EtOH were shown not to achieve 100% sterilization efficiency. The agar diffusion test showed higher sterilization efficiency when using an antimicrobial solution (AMS). At the same time, none of the analyzed techniques significantly altered the morphology and distribution of fiber diameters. EtOH and e-beam sterilization resulted in a significant reduction in material porosity together with an increase in the Young's modulus. Similarly, AMS sterilization increased the value of Young's modulus. In most cases, the viability of cells cultured in contact with the sterilized materials was not affected by the sterilization process. Only for UV sterilization, cell viability was significantly lower and reached about 70% of control after 72 h of culture.
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Affiliation(s)
- Iwona Łopianiak
- Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland;
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Mahumane GD, Kumar P, Pillay V, Choonara YE. Repositioning N-Acetylcysteine (NAC): NAC-Loaded Electrospun Drug Delivery Scaffolding for Potential Neural Tissue Engineering Application. Pharmaceutics 2020; 12:E934. [PMID: 33007830 PMCID: PMC7601117 DOI: 10.3390/pharmaceutics12100934] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 09/27/2020] [Accepted: 09/27/2020] [Indexed: 02/07/2023] Open
Abstract
Traumatic brain injury (TBI) presents a serious challenge for modern medicine due to the poor regenerative capabilities of the brain, complex pathophysiology, and lack of effective treatment for TBI to date. Tissue-engineered scaffolds have shown some experimental success in vivo; unfortunately, none have yielded consummate results of clinical efficacy. N-acetylcysteine has shown neuroprotective potential. To this end, we developed a N-acetylcysteine (NAC)-loaded poly(lactic-co-glycolic acid) (PLGA) electrospun system for potential neural tissue application for TBI. Scanning electron microscopy showed nanofiber diameters ranging 72-542 nm and 124-592 nm for NAC-free and NAC-loaded PLGA nanofibers, respectively. NAC loading was obtained at 28%, and drug entrapment efficacy was obtained at 84%. A biphasic NAC release pattern that featured an initial burst release (13.9%) stage and a later sustained release stage was noted, thus enabling the prolonged replenishing of NAC and drastically improving cell viability and proliferation. This was evidenced by a significantly higher cell viability and proliferation on NAC-loaded nanofibers for rat pheochromocytoma (PC12) and human glioblastoma multiform (A172) cell lines in comparison to PLGA-only nanofibers. The increased cell viability and cell proliferation on NAC-loaded nanofiber substantiates for the repositioning of NAC as a pharmacological agent in neural tissue regeneration applications.
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Affiliation(s)
| | | | | | - Yahya E. Choonara
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Science, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa; (G.D.M.); (P.K.); (V.P.)
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8
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Moradi L, Mohammadi Jobania B, Jafarnezhad-Ansariha F, Ghorbani F, Esmaeil-Pour R, Majidi Zolbina M, Kajbafzadeh AM. Evaluation of different sterilization methods for decellularized kidney tissue. Tissue Cell 2020; 66:101396. [PMID: 32933719 DOI: 10.1016/j.tice.2020.101396] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 05/15/2020] [Accepted: 06/01/2020] [Indexed: 12/16/2022]
Abstract
The main goal of this study was to assess the effect of different sterilization treatment for sterilization of decellularized kidney tissue. Rabbit kidneys were decellularized by the perfusion-based method using sodium dodecyl sulfate (SDS) and Triton X-100. Then, decellularized kidney slices were prepared and sterilized by an antibiotic cocktail, PAA (0.5 %, 1% and 1.5 %), 5KG γ-irradiation and 320-480 nm UV-irradiation. Histological evaluations, DNA quantification assay, MTT assay, scanning electron microscopy (SEM), mechanical test and bacterial and fungal culture tests were performed to determine the quality of decellularization and sterilization processes. The kidney slices were seeded by adipose-derived mesenchymal stem cells (ASCs) to assess the cell adhesion capability after treatment. The results of the current study indicated that PAA 0.5 % was the most efficient method to completely decontaminate rabbit decellularized kidney tissue while preserving the mechanical properties and main components of the matrix which are necessary for cell-matrix interaction and cell adhesion. The 5KG γ-irradiation was determined to be the most destructive sterilization method, with reduced the mechanical strengths as well as altered microstructure of the kidney matrix and no cell adhesion. In addition, UV-irradiation is not able to sterile the decellularized tissues. Therefore PAA 0.5 % sterilization method can be a powerful means for sterilization of biological scaffolds.
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Affiliation(s)
- Lida Moradi
- Pediatric Urology and Regenerative Medicine Research Center, Children's Medical Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran
| | - Bahareh Mohammadi Jobania
- Pediatric Urology and Regenerative Medicine Research Center, Children's Medical Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran
| | - Fahimeh Jafarnezhad-Ansariha
- Pediatric Urology and Regenerative Medicine Research Center, Children's Medical Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran
| | - Fariba Ghorbani
- Tracheal Diseases Research Center (TDRC), National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Esmaeil-Pour
- Pediatric Urology and Regenerative Medicine Research Center, Children's Medical Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran
| | - Masoumeh Majidi Zolbina
- Pediatric Urology and Regenerative Medicine Research Center, Children's Medical Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran
| | - Abdol-Mohammad Kajbafzadeh
- Pediatric Urology and Regenerative Medicine Research Center, Children's Medical Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran.
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9
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Natural Sources and Applications of Demineralized Bone Matrix in the Field of Bone and Cartilage Tissue Engineering. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1249:3-14. [DOI: 10.1007/978-981-15-3258-0_1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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10
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Impact of UV sterilization and short term storage on the in vitro release kinetics and bioactivity of biomolecules from electrospun scaffolds. Sci Rep 2019; 9:15117. [PMID: 31641201 PMCID: PMC6805903 DOI: 10.1038/s41598-019-51513-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 09/27/2019] [Indexed: 11/29/2022] Open
Abstract
To effectively translate bioactive scaffolds into a preclinical setting, proper sterilization techniques and storage conditions need to be carefully considered, as the chosen sterilization technique and storage condition might affect the structural and mechanical properties of the scaffolds, as well as the bioactivity and release kinetics of the incorporated biomolecules. Since rarely tested or quantified, we show here in a proof-of-concept study how these parameters are affected by UV sterilization and one week storage at different temperatures using bioactive electrospun DegraPol scaffolds that were specifically designed for application in the field of tendon rupture repair. Even though UV sterilization and the different storage conditions did not impact the morphology or the physicochemical properties of the bioactive scaffolds, UV sterilization caused significant attenuation of the growth factor release kinetics, here platelet derived growth factor (PDGF-BB) release (by approx. 85%) and slight decrease in ascorbic acid release (by approx. 20%). In contrast, 4 °C and −20 °C storage did not have a major effect on the release kinetics of PDGF-BB, while storage at room temperature caused increase in PDGF-BB released. All storage conditions had little effect on ascorbic acid release. Equally important, neither UV sterilization nor storage affected the bioactivity of the released PDGF-BB, suggesting stability of the bioactive scaffolds for at least one week and showing potential for bioactive DegraPol scaffolds to be translated into an off-the-shelf available product. These parameters are expected to be scaffold and protein-dependent.
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11
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Braghirolli DI, Caberlon B, Gamba D, Petry J, Dias ML, Pranke P. Poly(trimethylene carbonate-co-L-lactide) electrospun scaffolds for use as vascular grafts. ACTA ACUST UNITED AC 2019; 52:e8318. [PMID: 31411247 PMCID: PMC6694404 DOI: 10.1590/1414-431x20198318] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 05/31/2019] [Indexed: 11/22/2022]
Abstract
Currently, there is great clinical need for suitable synthetic grafts that can be used in vascular diseases. Synthetic grafts have been successfully used in medium and large arteries, however, their use in small diameter vessels is limited and presents a high failure rate. In this context, the aim of this study was to develop tissue engineering scaffolds, using poly(trimethylene carbonate-co-L-lactide) (PTMCLLA), for application as small diameter vascular grafts. For this, copolymers with varying trimethylene carbonate/lactide ratios - 20/80, 30/70, and 40/60 - were submitted to electrospinning and the resulting scaffolds were evaluated in terms of their physicochemical and biological properties. The scaffolds produced with PTMCLLA 20/80, 30/70, and 40/60 showed smooth fibers with an average diameter of 771±273, 606±242, and 697±232 nm, respectively. When the degradation ratio was evaluated, the three scaffold groups had a similar molecular weight (Mw) on the final day of analysis. PTMCLLA 30/70 and 40/60 scaffolds exhibited greater flexibility than the PTMCLLA 20/80. However, the PTMCLLA 40/60 scaffolds showed a large wrinkling and their biological properties were not evaluated. The PTMCLLA 30/70 scaffolds supported the adhesion and growth of mesenchymal stem cells (MSCs), endothelial progenitor cells, and smooth muscle cells (SMCs). In addition, they provided a spreading of MSCs and SMCs. Given the results, the electrospun scaffolds produced with PTMCLLA 30/70 copolymer can be considered promising candidates for future applications in vascular tissue engineering.
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Affiliation(s)
- D I Braghirolli
- Laboratório de Hematologia e Células-tronco, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil.,Programa de Pós-Graduação em Fisiologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | - B Caberlon
- Laboratório de Hematologia e Células-tronco, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | - D Gamba
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | - Jftc Petry
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | - M L Dias
- Instituto de Macromoléculas Professora Eloisa Mano (IMA), Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - P Pranke
- Laboratório de Hematologia e Células-tronco, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil.,Programa de Pós-Graduação em Fisiologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil.,Instituto de Pesquisa com Células-tronco, Porto Alegre, RS, Brasil
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Akia M, Rodriguez C, Materon L, Gilkerson R, Lozano K. Antibacterial activity of polymeric nanofiber membranes impregnated with Texas sour orange juice. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.03.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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13
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14
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The effect of gamma-irradiation on morphology and properties of melt-spun poly (lactic acid)/cellulose fibers. Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2018.11.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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15
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Yu H, Cauchois G, Schmitt JF, Louvet N, Six JL, Chen Y, Rahouadj R, Huselstein C. Is there a cause-and-effect relationship between physicochemical properties and cell behavior of alginate-based hydrogel obtained after sterilization? J Mech Behav Biomed Mater 2017; 68:134-143. [DOI: 10.1016/j.jmbbm.2017.01.038] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 01/21/2017] [Accepted: 01/24/2017] [Indexed: 11/25/2022]
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16
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Ghobeira R, Philips C, Declercq H, Cools P, De Geyter N, Cornelissen R, Morent R. Effects of different sterilization methods on the physico-chemical and bioresponsive properties of plasma-treated polycaprolactone films. Biomed Mater 2017; 12:015017. [DOI: 10.1088/1748-605x/aa51d5] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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Galuppo AG, Chagastelles PC, Gamba D, Iglesias DB, Sperling LE, Machado J, Petry JFTC, Wendorff J, Petzhold CL, Pranke P. Effect of feeder free poly(lactide-co-glycolide) scaffolds on morphology, proliferation, and pluripotency of mouse embryonic stem cells. J Biomed Mater Res A 2016; 105:424-432. [DOI: 10.1002/jbm.a.35916] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 09/21/2016] [Accepted: 09/27/2016] [Indexed: 01/01/2023]
Affiliation(s)
- Andrea G. Galuppo
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
- Stem Cell Laboratory; Fundamental Health Science Institute, Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
- Post Graduate Program in Material Science; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - Pedro C. Chagastelles
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
- Stem Cell Laboratory; Fundamental Health Science Institute, Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
- Post Graduate Program in Material Science; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - Douglas Gamba
- Laboratory of Organic Synthesis and Polymers; Institute of Chemistry, Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - Daikelly B. Iglesias
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
- Post Graduate Program in Physiology; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - Laura E. Sperling
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
- Stem Cell Laboratory; Fundamental Health Science Institute, Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - Janine Machado
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - Jéssica F. T. C. Petry
- Laboratory of Organic Synthesis and Polymers; Institute of Chemistry, Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | | | - Cesar L. Petzhold
- Laboratory of Organic Synthesis and Polymers; Institute of Chemistry, Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
| | - Patricia Pranke
- Hematology and Stem Cell Laboratory, Faculty of Pharmacy; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
- Stem Cell Laboratory; Fundamental Health Science Institute, Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
- Post Graduate Program in Physiology; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
- Stem Cell Research Institute; Porto Alegre RS Brazil
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18
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Wade MB, Rodenberg E, Patel U, Shah B, Becker ML. Influence of Sterilization Technologies on Electrospun Poly(ester urea)s for Soft Tissue Repair. Biomacromolecules 2016; 17:3363-3374. [PMID: 27610629 DOI: 10.1021/acs.biomac.6b01158] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mary Beth Wade
- Integrated
Biosciences Program, The University of Akron, Akron, Ohio 44325, United States
| | - Eric Rodenberg
- Cook Biotech, Inc., West Lafayette, Indiana 47906, United States
| | - Umesh Patel
- Cook Biotech, Inc., West Lafayette, Indiana 47906, United States
| | - Bhavin Shah
- Cook Biotech, Inc., West Lafayette, Indiana 47906, United States
| | - Matthew L. Becker
- The
Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
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19
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Rediguieri CF, Sassonia RC, Dua K, Kikuchi IS, de Jesus Andreoli Pinto T. Impact of sterilization methods on electrospun scaffolds for tissue engineering. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.07.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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20
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Grasman JM, O’Brien MP, Ackerman K, Gagnon KA, Wong GM, Pins GD. The Effect of Sterilization Methods on the Structural and Chemical Properties of Fibrin Microthread Scaffolds. Macromol Biosci 2016; 16:836-46. [PMID: 26847494 PMCID: PMC4902748 DOI: 10.1002/mabi.201500410] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 01/02/2016] [Indexed: 01/13/2023]
Abstract
A challenge for the design of scaffolds in tissue engineering is to determine a terminal sterilization method that will retain the structural and biochemical properties of the materials. Since commonly used heat and ionizing energy-based sterilization methods have been shown to alter the material properties of protein-based scaffolds, the effects of ethanol and ethylene oxide (EtO) sterilization on the cellular compatibility and the structural, chemical, and mechanical properties of uncrosslinked, UV crosslinked, or 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC) crosslinked fibrin microthreads in neutral (EDCn) or acidic (EDCa) buffers are evaluated. EtO sterilization significantly reduces the tensile strength of uncrosslinked microthreads. Surface chemistry analyses show that EtO sterilization induces alkylation of EDCa microthreads leading to a significant reduction in myoblast attachment. The material properties of EDCn microthreads do not appear to be affected by the sterilization method. These results significantly enhance the understanding of how sterilization or crosslinking techniques affect the material properties of protein scaffolds.
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Affiliation(s)
- Jonathan M. Grasman
- Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, MA, 01609, USA. Bioengineering Institute, Worcester Polytechnic Institute, Worcester, MA, 01609, USA. Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Megan P. O’Brien
- Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, MA, 01609, USA
| | - Kevin Ackerman
- Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, MA, 01609, USA
| | - Keith A. Gagnon
- Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, MA, 01609, USA. Boston University School of Medicine, Boston, MA, 02119, USA. Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA
| | - Gregory M. Wong
- Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, MA, 01609, USA. Department of Geosciences, Pennsylvania State University, University Park, PA, 16802, USA
| | - George D. Pins
- Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, MA, 01609, USA. Bioengineering Institute, Worcester Polytechnic Institute, Worcester, MA, 01609, USA
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21
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Dai Z, Ronholm J, Tian Y, Sethi B, Cao X. Sterilization techniques for biodegradable scaffolds in tissue engineering applications. J Tissue Eng 2016; 7:2041731416648810. [PMID: 27247758 PMCID: PMC4874054 DOI: 10.1177/2041731416648810] [Citation(s) in RCA: 170] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 04/18/2016] [Indexed: 12/28/2022] Open
Abstract
Biodegradable scaffolds have been extensively studied due to their wide applications in biomaterials and tissue engineering. However, infections associated with in vivo use of these scaffolds by different microbiological contaminants remain to be a significant challenge. This review focuses on different sterilization techniques including heat, chemical, irradiation, and other novel sterilization techniques for various biodegradable scaffolds. Comparisons of these techniques, including their sterilization mechanisms, post-sterilization effects, and sterilization efficiencies, are discussed.
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Affiliation(s)
- Zheng Dai
- Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, ON, Canada
| | - Jennifer Ronholm
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada
| | - Yiping Tian
- Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, ON, Canada
| | - Benu Sethi
- Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, ON, Canada
| | - Xudong Cao
- Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, ON, Canada
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22
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Rediguieri CF, de Jesus Andreoli Pinto T, Bou-Chacra NA, Galante R, de Araújo GLB, do Nascimento Pedrosa T, Maria-Engler SS, De Bank PA. Ozone Gas as a Benign Sterilization Treatment for PLGA Nanofiber Scaffolds. Tissue Eng Part C Methods 2016; 22:338-47. [PMID: 26757850 PMCID: PMC4827278 DOI: 10.1089/ten.tec.2015.0298] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 01/11/2016] [Indexed: 01/10/2023] Open
Abstract
The use of electrospun nanofibers for tissue engineering and regenerative medicine applications is a growing trend as they provide improved support for cell proliferation and survival due, in part, to their morphology mimicking that of the extracellular matrix. Sterilization is a critical step in the fabrication process of implantable biomaterial scaffolds for clinical use, but many of the existing methods used to date can negatively affect scaffold properties and performance. Poly(lactic-co-glycolic acid) (PLGA) has been widely used as a biodegradable polymer for 3D scaffolds and can be significantly affected by current sterilization techniques. The aim of this study was to investigate pulsed ozone gas as an alternative method for sterilizing PLGA nanofibers. The morphology, mechanical properties, physicochemical properties, and response of cells to PLGA nanofiber scaffolds were assessed following different degrees of ozone gas sterilization. This treatment killed Geobacillus stearothermophilus spores, the most common biological indicator used for validation of sterilization processes. In addition, the method preserved all of the characteristics of nonsterilized PLGA nanofibers at all degrees of sterilization tested. These findings suggest that ozone gas can be applied as an alternative method for sterilizing electrospun PLGA nanofiber scaffolds without detrimental effects.
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Affiliation(s)
- Carolina Fracalossi Rediguieri
- Departamento de Farmácia, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, Brasil
- Agência Nacional de Vigilância Sanitária, Brasília, Brasil
| | | | - Nadia Araci Bou-Chacra
- Departamento de Farmácia, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, Brasil
| | - Raquel Galante
- Departamento de Farmácia, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, Brasil
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | | | - Tatiana do Nascimento Pedrosa
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, Brasil
| | - Silvya Stuchi Maria-Engler
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, Brasil
| | - Paul A. De Bank
- Department of Pharmacy & Pharmacology and Centre for Regenerative Medicine, University of Bath, Bath, United Kingdom
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23
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Qiang N, Xie F, Liang H, Li XF, Tang S, Zhu JX. SYNTHESIS OF POLY[(ε-CL)- co-(GA-alt- L-Asp)] COPOLYMER AND EFFECTS ON CELLS AFTER COUPLING WITH SMALL PEPTIDE. BIOMEDICAL ENGINEERING: APPLICATIONS, BASIS AND COMMUNICATIONS 2015. [DOI: 10.4015/s1016237215500532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A novel poly[([Formula: see text]-CL)-co-(GA-alt-L-Asp)] with improved hydrophilicity was prepared. The monomer 3(S)-[(benzyloxycarbony)methyl]-1,4-dioxane-2,5-dione (BMD) was prepared from aspartic acid. The polymer was obtained by ring-opening polymerization of [Formula: see text]-caprolactone ([Formula: see text]-CL) and BMD. Poly[([Formula: see text]-CL)-co-(GA-alt-L-Asp)] was synthesized by deprotection. The structure and properties of the polymer were characterized using 1H nuclear magnetic resonance, gel permeation chromatography, and differential scanning calorimetry. The melting point and melting enthalpy of the polymer decreased with the increase of BMD. The structural regularity of polycaprolactone was destroyed by the BMD. A laminin-derived peptide [i.e., Arg-Gly-Asp (RGD)] was covalently tethered to the carboxyl groups and the peptide-grafted films. Results indicated that the addition of RGD had beneficial effects for cell growth, as shown by scanning electron microscopy.
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Affiliation(s)
- Na Qiang
- Department of Chemical Engineering, Huizhou University, Huizhou 516007, P. R. China
| | - Fang Xie
- Department of Chemical Engineering, Huizhou University, Huizhou 516007, P. R. China
| | - Hao Liang
- Department of Chemical Engineering, Huizhou University, Huizhou 516007, P. R. China
| | - Xian-Feng Li
- Department of Chemical Engineering, Huizhou University, Huizhou 516007, P. R. China
| | - Shuo Tang
- Department of Orthopaedics, West China Hospital, Sichuan University, Chengdu 610041, P. R. China
| | - Ji-Xiang Zhu
- Department of Biomedical Engineering, Guangzhou Medical University, Guangzhou 510182, P. R. China
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24
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Naderi N, Griffin M, Malins E, Becer R, Mosahebi A, Whitaker IS, Seifalian AM. Slow chlorine releasing compounds: A viable sterilisation method for bioabsorbable nanocomposite biomaterials. J Biomater Appl 2015; 30:1114-24. [DOI: 10.1177/0885328215613666] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Objective Selection of the appropriate sterilisation method for biodegradable materials has been a challenging task. Many conventional sterilisation methods are not suitable for the next generation of biomaterials, mainly due to their complex composition, based on nanomaterials, often incorporating bioactive moieties. In this study, we investigate sterilisation efficacy of slow chlorine releasing compound sodium dichloroisocyanurate dihydrate (SDIC) for polyhedral oligomeric silsesquioxane (POSS)-poly(caprolactone urea-urethane) (PCL) scaffolds in comparison with conventional sterilisation methods. Methods POSS-PCL scaffolds were subjected to 70% ethanol, UV, and SDIC sterilisation methods. Samples were immersed in tryptone soya broth (TSB) and thioglycollate medium (THY) and after seven days visually inspected for signs of microbial growth. Bulk and surface properties and molecular weight distribution profiles of the scaffolds after sterilization were investigated using FTIR analysis, surface hydrophilicity, scanning electron microscopy analysis, tensile strength testing, and gel-permeation chromatography (GPC). Adipose-derived stem cells (ADSC) were seeded on the scaffolds and AlamarBlue® viability assay was performed to investigate cell metabolic activity. Confocal imaging of rhodamine phalloidin and Dapi stained ADSC on scaffolds was used to demonstrate cell morphology. Results GPC results showed that autoclaving led to a significant decrease in the molecular weight of POSS-PCL, whereas ethanol caused visible deformation of the polymer 3D structure and UV radiation did not effectively sterilise the scaffolds. AlamarBlue® analysis showed metabolic activity close to that of tissue culture plastic for ethanol and SDIC. Conclusion SDIC sterilisation can be safely applied to biodegradable scaffolds unsuitable for the more common sterilisation methods.
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Affiliation(s)
- Naghmeh Naderi
- Reconstructive Surgery & Regenerative Medicine Group, Institute of Life Sciences (ILS), Swansea University Medical School, Swansea, UK
- Welsh Centre for Burns & Plastic Surgery, ABMU Health Board, Swansea, UK
- UCL Centre for Nanotechnology & Regenerative Medicine, University College London, Royal Free London NHS Foundation Trust, London, UK
| | - Michelle Griffin
- UCL Centre for Nanotechnology & Regenerative Medicine, University College London, Royal Free London NHS Foundation Trust, London, UK
| | - Edward Malins
- Polymer Chemistry Laboratory, School of Engineering and Materials Science, Queen Mary, University of London, London, UK
| | - Remzi Becer
- Polymer Chemistry Laboratory, School of Engineering and Materials Science, Queen Mary, University of London, London, UK
| | - Afshin Mosahebi
- Department of Plastic Surgery, Royal Free London NHS Foundation Trust, London, UK
| | - Iain S Whitaker
- Reconstructive Surgery & Regenerative Medicine Group, Institute of Life Sciences (ILS), Swansea University Medical School, Swansea, UK
- Welsh Centre for Burns & Plastic Surgery, ABMU Health Board, Swansea, UK
| | - Alexander M Seifalian
- UCL Centre for Nanotechnology & Regenerative Medicine, University College London, Royal Free London NHS Foundation Trust, London, UK
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25
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Rabiatul AR, Lokanathan Y, Rohaina CM, Chowdhury SR, Aminuddin BS, Ruszymah BHI. Surface modification of electrospun poly(methyl methacrylate) (PMMA) nanofibers for the development of in vitro respiratory epithelium model. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2015; 26:1297-311. [PMID: 26335265 DOI: 10.1080/09205063.2015.1088183] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Scaffold design is an important aspect of in vitro model development. In this study, nanoscaffold surface modification, namely UV radiation and genipin cross-linking to immobilize collagen on the surface of electrospun poly (methyl methacrylate) (PMMA) nanofiber sheet was investigated. Samples were divided into four groups; PMMA nanofibers (PMMA), collagen-coated PMMA nanofibers (PMMACOL), genipin cross-linked collagen-coated PMMA nanofibers (PMMAGEN), and UV-irradiated collagen-coated PMMA nanofibers (PMMAUV). 6 h of UV radiation significantly reduced the hydrophobicity of PMMA nanofibers from (131.88° ± 1.33°) to (110.04° ± 0.27°) (p < 0.05). The amount of collagen immobilized was significantly higher in PMMAGEN group (239.36 ± 16.63 μg collagen/mg nanofibers) (p < 0.05) compared to the other groups. RECs on all scaffold expressed epithelial cell-specific markers (CK18 and CK14), mucin-producing cell marker (MUC5Ac) and were actively proliferating, based on the positive expression of Ki67. Total number of attached cells was significantly the highest in PMMAUV group on day 9 (6.44 × 10(4) ± 2.77 × 10(4) cells/cm(2)) and it has the highest proliferation rate from day 4 to 9 (0.005 ± 0.003 h(-1)) compared to the other groups. Even though PMMAGEN group showed the highest collagen adsorption, in terms of cells attachment and proliferation, PMMAUV group showed a better outcome compared to the other groups. Thus, PMMAUV scaffold is more suitable to be used in the construction of in vitro respiratory epithelial model.
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Affiliation(s)
- A R Rabiatul
- a Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre , Universiti Kebangsaan Malaysia , Kuala Lumpur , Malaysia
| | - Y Lokanathan
- a Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre , Universiti Kebangsaan Malaysia , Kuala Lumpur , Malaysia
| | - C M Rohaina
- a Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre , Universiti Kebangsaan Malaysia , Kuala Lumpur , Malaysia
| | - S R Chowdhury
- a Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre , Universiti Kebangsaan Malaysia , Kuala Lumpur , Malaysia
| | - B S Aminuddin
- b Ear, Nose and Throat Consultant Clinic, Ampang Puteri Specialist Hospital , Ampang , Selangor , Malaysia
| | - B H I Ruszymah
- a Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre , Universiti Kebangsaan Malaysia , Kuala Lumpur , Malaysia.,c Faculty of Medicine, Department of Physiology , Universiti Kebangsaan Malaysia , Kuala Lumpur , Malaysia
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26
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Dai Y, Xia Y, Chen HB, Li N, Chen G, Zhang FM, Gu N. Optimization of sterilization methods for electrospun poly(ε-caprolactone) to enhance pre-osteoblast cell behaviors for guided bone regeneration. J BIOACT COMPAT POL 2015. [DOI: 10.1177/0883911515598795] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The aim of this study was to determine the optimal sterilization procedure for biodegradable polyester-based guided bone regeneration membranes. The effects of sterilization using low-temperature hydrogen peroxide gas plasma, 75% ethanol (EtOH; two soaking times), and ultraviolet radiation on the structure and biological properties of electrospun poly(ε-caprolactone) membranes were investigated. The results demonstrated that all were effective sterilization methods. The membranes were then assessed for surface structure, wettability, and in vitro cellular responses including osteogenic differentiation by seeding with pre-osteoblasts (MC3T3-E1 cells). The cells grew well on all the sterilized membranes. The low-temperature hydrogen peroxide gas plasma–sterilized membranes, which exhibited significantly improved hydrophilicity ( p < 0.05), were better for cell osteogenic differentiation compared to the membranes sterilized by other methods. In addition, the cell behavior on the membranes sterilized by EtOH was superior to those sterilized by ultraviolet radiation. Finally, EtOH soaking time appeared to influence cell behavior. The results suggested that low-temperature hydrogen peroxide gas plasma treatment is the most promising method to sterilize electrospun poly(ε-caprolactone) membranes for guided bone regeneration.
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Affiliation(s)
- Yun Dai
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Yang Xia
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, Nanjing, China
| | - Han-Bang Chen
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
| | - Na Li
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
| | - Gang Chen
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
| | - Fei-Min Zhang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
- Suzhou Key Laboratory of Biomaterials and Technologies & Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou, China
| | - Ning Gu
- Suzhou Key Laboratory of Biomaterials and Technologies & Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou, China
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27
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Braghirolli DI, Zamboni F, Acasigua GAX, Pranke P. Association of electrospinning with electrospraying: a strategy to produce 3D scaffolds with incorporated stem cells for use in tissue engineering. Int J Nanomedicine 2015; 10:5159-69. [PMID: 26316747 PMCID: PMC4542624 DOI: 10.2147/ijn.s84312] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
In tissue engineering, a uniform cell occupation of scaffolds is crucial to ensure the success of tissue regeneration. However, this point remains an unsolved problem in 3D scaffolds. In this study, a direct method to integrate cells into fiber scaffolds was investigated by combining the methods of electrospinning of fibers and bioelectrospraying of cells. With the associating of these methods, the cells were incorporated into the 3D scaffolds while the fibers were being produced. The scaffolds containing cells (SCCs) were produced using 20% poly(lactide-co-glycolide) solution for electrospinning and mesenchymal stem cells from deciduous teeth as a suspension for bioelectrospraying. After their production, the SCCs were cultivated for 15 days at 37°C with an atmosphere of 5% CO2. The 3-(4,5-dimethylthiazol- 2-yl)-2,5-diphenyltetrazolium bromide test demonstrated that the cells remained viable and were able to grow between the fibers. Scanning electron microscopy showed the presence of a high number of cells in the structure of the scaffolds and confocal images demonstrated that the cells were able to adapt and spread between the fibers. Histological analysis of the SCCs after 1 day of cultivation showed that the cells were uniformly distributed throughout the thickness of the scaffolds. Some physicochemical properties of the scaffolds were also investigated. SCCs exhibited good mechanical properties, compatible with their handling and further implantation. The results obtained in the present study suggest that the association of electrospinning and bioelectrospraying provides an interesting tool for forming 3D cell-integrated scaffolds, making it a viable alternative for use in tissue engineering.
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Affiliation(s)
- Daikelly Iglesias Braghirolli
- Hematology and Stem Cells Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil ; Department of Materials Science, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Fernanda Zamboni
- Hematology and Stem Cells Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Gerson A X Acasigua
- Hematology and Stem Cells Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil ; School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Patricia Pranke
- Hematology and Stem Cells Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil ; Department of Materials Science, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil ; Instituto de Pesquisas com Células-Tronco, Porto Alegre, Rio Grande do Sul, Brazil
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