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Pinky, Sharma A, Arora V, Rao EP, Arava S, Agrawal AK, Jassal M, Mohanty S. Modulating the hAM/PCL Biocomposite for Expedited Wound Healing: A Chemical-Free Approach for Boosting Regenerative Potential. ACS Biomater Sci Eng 2024; 10:3842-3854. [PMID: 38754076 DOI: 10.1021/acsbiomaterials.3c01740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
There is an arising need for effective wound dressings that retain the bioactivity of a cellular treatment, but without the high costs and complexities associated with manufacturing, storing, and applying cell-based products. As skin wound recovery is a dynamic and complicated process, a significant obstacle to the healing of skin wounds is the lack of an appropriate wound dressing that can imitate the microenvironment of healthy skin and prevent bacterial infection. It requires the well-orchestrated integration of biological and molecular events. In this study, we have fabricated full-thickness skin graft biocomposite membranes to target full-thickness skin excision wounds. We reinforced human amniotic membrane (hAM) with electrospun polycaprolactone (PCL) to develop composite membranes, namely, PCL/hAM and PCL/hAM/PCL. Composite membranes were compared for physical, biological, and mechanical properties with the native counterpart. PCL/hAM and PCL/hAM/PCL displayed improved stability and delayed degradation, which further synergically improved the rapid wound healing property of hAM, driven primarily by wound closure analysis and histological assessment. Moreover, PCL/hAM displayed a comparable cellular interaction to hAM. On application as a wound dressing, histological analysis demonstrated that hAM and PCL/hAM promoted early epidermis and dermis formation. Studies on in vivo wound healing revealed that although hAM accelerates cell development, the overall wound healing process is similar in PCL/hAM. This finding is further supported by the immunohistochemical analysis of COL-1/COL-3, CD-31, and TGF-β. Overall, this conjugated PCL and hAM-based membrane has considerable potential to be applied in skin wound healing. The facile fabrication of the PCL/hAM composite membrane provided the self-regenerating wound dressing with the desired mechanical strength as an ideal regenerative property for skin tissue regeneration.
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Affiliation(s)
- Pinky
- Stem Cell Facility, DBT-Centre of Excellence for Stem Cell Research, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110029, India
| | - Aarushi Sharma
- Stem Cell Facility, DBT-Centre of Excellence for Stem Cell Research, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110029, India
| | - Varun Arora
- SMITA Research Lab, Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - E Pranshu Rao
- Stem Cell Facility, DBT-Centre of Excellence for Stem Cell Research, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110029, India
| | - Sudheer Arava
- Department of Pathology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110029, India
| | - Ashwini K Agrawal
- SMITA Research Lab, Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Manjeet Jassal
- SMITA Research Lab, Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Sujata Mohanty
- Stem Cell Facility, DBT-Centre of Excellence for Stem Cell Research, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110029, India
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2
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Liška V, Willimetz R, Kubát P, Křtěnová P, Gyepes R, Mosinger J. Synergistic photogeneration of nitric oxide and singlet oxygen by nanofiber membranes via blue and/or red-light irradiation: Strong antibacterial action. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2024; 255:112906. [PMID: 38688040 DOI: 10.1016/j.jphotobiol.2024.112906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/28/2024] [Accepted: 04/05/2024] [Indexed: 05/02/2024]
Abstract
New functionalities were added to biocompatible polycaprolactone nanofiber materials through the co-encapsulation of chlorin e6 trimethyl ester (Ce6) photogenerating singlet oxygen and absorbing light both in the blue and red regions, and using 4-(N-(aminopropyl)-3-(trifluoromethyl)-4-nitrobenzenamine)-7-nitrobenzofurazan, NO-photodonor (NOP), absorbing light in the blue region of visible light. Time-resolved and steady-state luminescence, as well as absorption spectroscopy, were used to monitor both photoactive compounds. The nanofiber material exhibited photogeneration of antibacterial species, specifically nitric oxide and singlet oxygen, upon visible light excitation. This process resulted in the efficient photodynamic inactivation of E. coli not only close to nanofiber material surfaces due to short-lived singlet oxygen, but even at longer distances due to diffusion of longer-lived nitric oxide. Interestingly, nitric oxide was also formed by processes involving photosensitization of Ce6 during irradiation by red light. This is promising for numerous applications, especially in the biomedical field, where strictly local photogeneration of NO and its therapeutic benefits can be applied using excitation in the "human body phototherapeutic window" (600-850 nm). Generally, due to the high permeability of red light, the photogeneration of NO can be achieved in any aqueous environment where direct excitation of NOP to its absorbance in the blue region is limited.
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Affiliation(s)
- Vojtěch Liška
- Faculty of Science, Charles University, Hlavova 2030, 128 43 Prague 2, Czech Republic
| | - Robert Willimetz
- Faculty of Science, Charles University, Hlavova 2030, 128 43 Prague 2, Czech Republic
| | - Pavel Kubát
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3, 182 23 Prague 8, Czech Republic
| | - Petra Křtěnová
- Faculty of Science, Charles University, Hlavova 2030, 128 43 Prague 2, Czech Republic
| | - Robert Gyepes
- Department of Chemistry, Faculty of Education of J. Selye University, Bratislavská 3322, 945 01 Komárno, Slovak Republic
| | - Jiří Mosinger
- Faculty of Science, Charles University, Hlavova 2030, 128 43 Prague 2, Czech Republic.
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3
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Tariq S, Shah SA, Hameed F, Mutahir Z, Khalid H, Tufail A, Akhtar H, Chaudhry AA, Khan AF. Tissue engineered periosteum: Fabrication of a gelatin basedtrilayer composite scaffold with biomimetic properties for enhanced bone healing. Int J Biol Macromol 2024; 263:130371. [PMID: 38423439 DOI: 10.1016/j.ijbiomac.2024.130371] [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: 10/20/2023] [Revised: 01/30/2024] [Accepted: 02/20/2024] [Indexed: 03/02/2024]
Abstract
The periosteum, a vascularized tissue membrane, is essential in bone regeneration following fractures and bone loss due to some other reasons, yet there exist several research gaps concerning its regeneration. These gaps encompass reduced cellular proliferation and bioactivity, potential toxicity, heightened stiffness of scaffold materials, unfavorable porosity, expensive materials and procedures, and suboptimal survivability or inappropriate degradation rates of the implanted materials. This research used an interdisciplinary approach by forming a new material fabricated through electrospinning for the proposed application as a layer-by-layer tissue-engineered periosteum (TEP). TEP comprises poly(ε-caprolactone) (PCL), PCL/gelatin/magnesium-doped zinc oxide (vascular layer), and gelatin/bioactive glass/COD liver oil (osteoconductive layer). These materials were selected for their diverse properties, when integrated into the scaffold formation, successfully mimic the characteristics of native periosteum. Scanning electron microscopy (SEM) was employed to confirm the trilayer structure of the scaffold and determine the average fiber diameter. In-vitro degradation and swelling studies demonstrated a uniform degradation rate that matches the typical recovery time of periosteum. The scaffold exhibited excellent mechanical properties comparable to natural periosteum. Furthermore, the sustained release kinetics of COD liver oil were observed in the trilayer scaffold. Cell culture results indicated that the three-dimensional topography of the scaffold promoted cell growth, proliferation, and attachment, confirming its non-toxicity, biocompatibility, and bioactivity. This study suggests that the fabricated scaffold holds promise as a potential artificial periosteum for treating periostitis and bone fractures.
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Affiliation(s)
- Sana Tariq
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Saqlain A Shah
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Fareeha Hameed
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Zeeshan Mutahir
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Hamad Khalid
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Asma Tufail
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Hafsah Akhtar
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Ather Farooq Khan
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Pakistan.
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Manjit M, Kumar K, Kumar M, Jha A, Bharti K, Tiwari P, Tilak R, Singh V, Koch B, Mishra B. Fabrication of gelatin coated polycaprolactone nanofiber scaffolds co-loaded with luliconazole and naringenin for treatment of Candida infected diabetic wounds. Int J Biol Macromol 2024; 261:129621. [PMID: 38278381 DOI: 10.1016/j.ijbiomac.2024.129621] [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: 11/05/2023] [Revised: 01/10/2024] [Accepted: 01/18/2024] [Indexed: 01/28/2024]
Abstract
The current study focuses on the development of gelatin-coated polycaprolactone (PCL) nanofibers co-loaded with luliconazole and naringenin for accelerated healing of infected diabetic wounds. Inherently, PCL nanofibers have excellent biocompatibility and biodegradation profiles but lack bioadhesion characteristics, which limits their use as dressing materials. So, coating them with a biocompatible and hydrophilic material like gelatin can improve bioadhesion. The preparation of nanofibers was done with the electrospinning technique. The solid state characterization and in-vitro performance assessment of nanofibers indicate the formation of uniformly interconnected nanofibers of 200-400 nm in diameter with smooth surface topography, excellent drug entrapment, and a surface pH of 5.6-6.8. The antifungal study showed that the nanofiber matrix exhibits excellent biofilm inhibition activity against several strains of Candida. Further, in-vivo assessment of nanofiber performance on C. albicans infected wounds in diabetic rats indicated accelerated wound healing efficacy in comparison to gauge-treated groups. Additionally, a higher blood flow and rapid re-epithelialization of wound tissue in the treatment group corroborated with the results obtained in the wound closure study. Overall, the developed dual-drug-loaded electrospun nanofiber mats have good compatibility, surface properties, and excellent wound healing potential, which can provide an extra edge in the management of complex diabetic wounds.
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Affiliation(s)
- Manjit Manjit
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi 221005, Uttar Pradesh, India.
| | - Krishan Kumar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi 221005, Uttar Pradesh, India.
| | - Manish Kumar
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi 221005, Uttar Pradesh, India.
| | - Abhishek Jha
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi 221005, Uttar Pradesh, India.
| | - Kanchan Bharti
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi 221005, Uttar Pradesh, India.
| | - Punit Tiwari
- Department of Microbiology, Institute of Medical Science, Banaras Hindu University, Varanasi 221005, India
| | - Ragini Tilak
- Department of Microbiology, Institute of Medical Science, Banaras Hindu University, Varanasi 221005, India
| | - Virendra Singh
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Biplob Koch
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Brahmeshwar Mishra
- Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology, (BHU), Varanasi 221005, Uttar Pradesh, India.
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Kalyvas JT, Facal Marina P, Stachura DL, Horsley JR, Abell AD. Smart Wearable Patches Using Light-Controlled Activation and Delivery of Photoswitchable Antimicrobial Peptides. Chemistry 2023; 29:e202301487. [PMID: 37309073 DOI: 10.1002/chem.202301487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/07/2023] [Accepted: 06/09/2023] [Indexed: 06/14/2023]
Abstract
A novel strategy to treat Staphylococcus aureus (S. aureus) skin infections is presented, where UV light is used to facilitate concomitant light-controlled activation and delivery of an antimicrobial therapeutic agent. Specifically, a new photoswitchable gramicidin S analogue was immobilized onto a polymeric wearable patch via a photocleavable linker that undergoes photolysis at the same wavelength of light required for activation of the peptide. Unlike toxic gramicidin S, the liberated active photoswitchable peptide exhibits antimicrobial activity against S. aureus while being ostensibly non-haemolytic to red blood cells. Moreover, irradiation with visible light switches off the antimicrobial properties of the peptide within seconds, presenting an ideal strategy to regulate antibiotic activity for localized bacterial infections with the potential to mitigate resistance.
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Affiliation(s)
- John T Kalyvas
- School of Physics, Chemistry & Earth Sciences, The University of Adelaide Adelaide, South Australia, 5005, Australia
| | - Paula Facal Marina
- School of Physics, Chemistry & Earth Sciences, The University of Adelaide Adelaide, South Australia, 5005, Australia
- Flinders Institute for NanoScale Science and Technology College of Science and Engineering, Flinders University, South Australia, 5042, Australia
| | - Damian L Stachura
- School of Physics, Chemistry & Earth Sciences, The University of Adelaide Adelaide, South Australia, 5005, Australia
| | - John R Horsley
- School of Physics, Chemistry & Earth Sciences, The University of Adelaide Adelaide, South Australia, 5005, Australia
| | - Andrew D Abell
- School of Physics, Chemistry & Earth Sciences, The University of Adelaide Adelaide, South Australia, 5005, Australia
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Yaseri R, Fadaie M, Mirzaei E, Samadian H, Ebrahiminezhad A. Surface modification of polycaprolactone nanofibers through hydrolysis and aminolysis: a comparative study on structural characteristics, mechanical properties, and cellular performance. Sci Rep 2023; 13:9434. [PMID: 37296193 PMCID: PMC10256742 DOI: 10.1038/s41598-023-36563-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 06/06/2023] [Indexed: 06/12/2023] Open
Abstract
Hydrolysis and aminolysis are two main commonly used chemical methods for surface modification of hydrophobic tissue engineering scaffolds. The type of chemical reagents along with the concentration and treatment time are main factors that determine the effects of these methods on biomaterials. In the present study, electrospun poly (ℇ-caprolactone) (PCL) nanofibers were modified through hydrolysis and aminolysis. The applied chemical solutions for hydrolysis and aminolysis were NaOH (0.5-2 M) and hexamethylenediamine/isopropanol (HMD/IPA, 0.5-2 M) correspondingly. Three distinct incubation time points were predetermined for the hydrolysis and aminolysis treatments. According to the scanning electron microscopy results, morphological changes emerged only in the higher concentrations of hydrolysis solution (1 M and 2 M) and prolonged treatment duration (6 and 12 h). In contrast, aminolysis treatments induced slight changes in the morphological features of the electrospun PCL nanofibers. Even though surface hydrophilicity of PCL nanofibers was noticeably improved through the both methods, the resultant influence of hydrolysis was comparatively more considerable. As a general trend, both hydrolysis and aminolysis resulted in a moderate decline in the mechanical performance of PCL samples. Energy dispersive spectroscopy analysis indicated elemental changes after the hydrolysis and aminolysis treatments. However, X-ray diffraction, thermogravimetric analysis, and infrared spectroscopy results did not show noticeable alterations subsequent to the treatments. The fibroblast cells were well spread and exhibited a spindle-like shape on the both treated groups. Furthermore, according to the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, the surface treatment procedures ameliorated proliferative properties of PCL nanofibers. These findings represented that the modified PCL nanofibrous samples by hydrolysis and aminolysis treatments can be considered as the potentially favorable candidates for tissue engineering applications.
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Affiliation(s)
- Raziye Yaseri
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Milad Fadaie
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Esmaeil Mirzaei
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.
- Nanomedicine and Nanobiology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Hadi Samadian
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
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7
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Le NPK, Altenburger MJ, Lamy E. Development of an Inflammation-Triggered In Vitro "Leaky Gut" Model Using Caco-2/HT29-MTX-E12 Combined with Macrophage-like THP-1 Cells or Primary Human-Derived Macrophages. Int J Mol Sci 2023; 24:ijms24087427. [PMID: 37108590 PMCID: PMC10139037 DOI: 10.3390/ijms24087427] [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: 03/24/2023] [Revised: 04/12/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
The "leaky gut" syndrome describes a damaged (leaky) intestinal mucosa and is considered a serious contributor to numerous chronic diseases. Chronic inflammatory bowel diseases (IBD) are particularly associated with the "leaky gut" syndrome, but also allergies, autoimmune diseases or neurological disorders. We developed a complex in vitro inflammation-triggered triple-culture model using 21-day-differentiated human intestinal Caco-2 epithelial cells and HT29-MTX-E12 mucus-producing goblet cells (90:10 ratio) in close contact with differentiated human macrophage-like THP-1 cells or primary monocyte-derived macrophages from human peripheral blood. Upon an inflammatory stimulus, the characteristics of a "leaky gut" became evident: a significant loss of intestinal cell integrity in terms of decreased transepithelial/transendothelial electrical resistance (TEER), as well as a loss of tight junction proteins. The cell permeability for FITC-dextran 4 kDa was then increased, and key pro-inflammatory cytokines, including TNF-alpha and IL-6, were substantially released. Whereas in the M1 macrophage-like THP-1 co-culture model, we could not detect the release of IL-23, which plays a crucial regulatory role in IBD, this cytokine was clearly detected when using primary human M1 macrophages instead. In conclusion, we provide an advanced human in vitro model that could be useful for screening and evaluating therapeutic drugs for IBD treatment, including potential IL-23 inhibitors.
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Affiliation(s)
- Nguyen Phan Khoi Le
- Molecular Preventive Medicine, University Medical Center and Faculty of Medicine, University of Freiburg, 79108 Freiburg, Germany
| | - Markus Jörg Altenburger
- Department of Operative Dentistry and Periodontology, University Medical Center and Faculty of Medicine, University of Freiburg, 79108 Freiburg, Germany
| | - Evelyn Lamy
- Molecular Preventive Medicine, University Medical Center and Faculty of Medicine, University of Freiburg, 79108 Freiburg, Germany
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Zhou J, Wu X, Zhao C. Optimization of decellularized liver matrix-modified chitosan fibrous scaffold for C3A hepatocyte culture. J Biomater Appl 2022; 37:903-917. [PMID: 35834434 DOI: 10.1177/08853282221115367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Hepatocyte scaffold is an essential part in bioartificial liver device. We have designed a novel hepatocyte scaffold based on porcine liver extracellular matrix (ECM) and chitosan (CTS) fabrics. This CTS-ECM scaffold can improve cell adhesion and proliferation. In the present study, an orthogonal test was designed to optimize the CTS/ECM composite scaffold, in which ECM concentration, EDC concentration and EDC to NHS ratio were taken as factors, proportion of nitrogen element and hydroxyproline content as indicators. The cytocompatibility of the novel scaffold for C3A hepatocytes was analyzed in vitro. The orthogonal test demonstrated that the optimal scaffold should be based on ECM concentration of 5 mg/mL, EDC concentration of 5 mg/mL, and EDC to NHS ratio 1:1. C3A hepatocytes cultured on the optimized CTS-ECM scaffolds showed stronger proliferation and functionality than those on Cytodex3 microcarriers (p < 0.05). The CTS/ECM composite scaffold may be widely used as a promising hepatocyte culture carrier, especially in bioartificial liver support systems.
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Affiliation(s)
- Junjing Zhou
- Department of Hepatobiliary Surgery, 199193Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Xinglian Wu
- Department of pharmacy, 117969The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, China
| | - Chaochen Zhao
- Department of Hepatobiliary Surgery, 117969The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, China
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Ramesh P, Moskwa N, Hanchon Z, Koplas A, Nelson DA, Mills KL, Castracane J, Larsen M, Sharfstein ST, Xie Y. Engineering cryoelectrospun elastin-alginate scaffolds to serve as stromal extracellular matrices. Biofabrication 2022; 14:10.1088/1758-5090/ac6b34. [PMID: 35481854 PMCID: PMC9973022 DOI: 10.1088/1758-5090/ac6b34] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 04/26/2022] [Indexed: 11/12/2022]
Abstract
Scaffold-based regenerative strategies that emulate physical, biochemical, and mechanical properties of the native extracellular matrix (ECM) of the region of interest can influence cell growth and function. Existing ECM-mimicking scaffolds, including nanofiber (NF) mats, sponges, hydrogels, and NF-hydrogel composites are unable to simultaneously mimic typical composition, topography, pore size, porosity, and viscoelastic properties of healthy soft-tissue ECM. In this work, we used cryoelectrospinning to fabricate 3D porous scaffolds with minimal fibrous backbone, pore size and mechanical properties similar to soft-tissue connective tissue ECM. We used salivary glands as our soft tissue model and found the decellularized adult salivary gland (DSG) matrix to have a fibrous backbone, 10-30μm pores, 120 Pa indentation modulus, and ∼200 s relaxation half time. We used elastin and alginate as natural, compliant biomaterials and water as the solvent for cryoelectrospinning scaffolds to mimic the structure and viscoelasticity of the connective tissue ECM of the DSG. Process parameters were optimized to produce scaffolds with desirable topography and compliance similar to DSG, with a high yield of >100 scaffolds/run. Using water as solvent, rather than organic solvents, was critical to generate biocompatible scaffolds with desirable topography; further, it permitted a green chemistry fabrication process. Here, we demonstrate that cryoelectrospun scaffolds (CESs) support penetration of NIH 3T3 fibroblasts 250-450µm into the scaffold, cell survival, and maintenance of a stromal cell phenotype. Thus, we demonstrate that elastin-alginate CESs mimic many structural and functional properties of ECM and have potential for future use in regenerative medicine applications.
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Affiliation(s)
- Pujhitha Ramesh
- College of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, USA
| | - Nicholas Moskwa
- Department of Biological Sciences and The RNA Institute, University at Albany, State University of New York, 1400 Washington Ave., Albany, New York 12222, USA
| | - Zachary Hanchon
- College of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, USA
| | - Adam Koplas
- College of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, USA
| | - Deirdre A. Nelson
- Department of Biological Sciences and The RNA Institute, University at Albany, State University of New York, 1400 Washington Ave., Albany, New York 12222, USA
| | - Kristen L. Mills
- Department of Mechanical, Aerospace, and Nuclear Engineering (MANE), Center for Biotechnology and Interdisciplinary Studies (CBIS), Rensselaer Polytechnic Institute, 1623 15th Street, Troy, New York, 12180, USA
| | - James Castracane
- College of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, USA
| | - Melinda Larsen
- College of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, USA,Department of Biological Sciences and The RNA Institute, University at Albany, State University of New York, 1400 Washington Ave., Albany, New York 12222, USA
| | - Susan T. Sharfstein
- College of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, USA,Corresponding Authors: Yubing Xie, Ph.D., Professor of Nanobioscience, College of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, USA, , Susan Sharfstein, Ph.D., Professor of Nanobioscience, College of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, USA,
| | - Yubing Xie
- College of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, USA,Corresponding Authors: Yubing Xie, Ph.D., Professor of Nanobioscience, College of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, USA, , Susan Sharfstein, Ph.D., Professor of Nanobioscience, College of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, USA,
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10
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Xing X, Han S, Ni Y, Cheng G, Cheng Y, Ni X, Deng Y, Li Z, Li Z. Mussel-inspired functionalization of electrospun scaffolds with polydopamine-assisted immobilization of mesenchymal stem cells-derived small extracellular vesicles for enhanced bone regeneration. Int J Pharm 2021; 609:121136. [PMID: 34592398 DOI: 10.1016/j.ijpharm.2021.121136] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 09/09/2021] [Accepted: 09/23/2021] [Indexed: 12/11/2022]
Abstract
Mesenchymal stem cells-derived small extracellular vesicles (MSCs-sEV) have shown promising prospects as a cell-free strategy for bone tissue regeneration. Here, a bioactive MSCs-sEV-loaded electrospun silk fibroin/poly(ε-caprolactone) (SF/PCL) scaffold was synthesized via a mussel-inspired immobilization strategy assisted by polydopamine (pDA). This pDA modification endowed the as-prepared scaffold with high loading efficiency and sustained release profile of sEV. In addition, the fabricated composite scaffold exhibited good physiochemical, mechanical, and biocompatible properties. In vitro cellular experiments indicated that the MSCs-sEV-loaded composite scaffold promoted the adhesion and spreading of preosteoblast and endothelial cells, as well as enhanced osteogenic differentiation and angiogenic activity. In vivo experiments showed that the functionalized electrospun scaffolds promoted bone regeneration in a rat calvarial bone defect model. Results suggest that the developed MSCs-sEV-anchored pDA-modified SF/PCL electrospun scaffolds possess high application potential in bone tissue engineering owing to their powerful pro-angiogenic and -osteogenic capacities, cell-free bioactivity, and cost effectiveness.
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Affiliation(s)
- Xin Xing
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China; The Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Shuang Han
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Yifeng Ni
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Gu Cheng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China; The Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Yuet Cheng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Xiaoqi Ni
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Yunfan Deng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Zhi Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China; The Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan, China.
| | - Zubing Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China; The Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan, China.
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11
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Moghaddaszadeh A, Seddiqi H, Najmoddin N, Abbasi Ravasjani S, Klein-Nulend J. Biomimetic 3D-printed PCL scaffold containing a high concentration carbonated-nanohydroxyapatite with immobilized-collagen for bone tissue engineering: enhanced bioactivity and physicomechanical characteristics. Biomed Mater 2021; 16. [PMID: 34670200 DOI: 10.1088/1748-605x/ac3147] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 10/20/2021] [Indexed: 11/12/2022]
Abstract
A challenging approach of three-dimensional (3D)-biomimetic scaffold design for bone tissue engineering is to improve scaffold bioactivity and mechanical properties. We aimed to design and fabricate 3D-polycaprolactone (PCL)-based nanocomposite scaffold containing a high concentration homogeneously distributed carbonated-nanohydroxyapatite (C-nHA)-particles in combination with immobilized-collagen to mimic real bone properties. PCL-scaffolds without/with C-nHA at 30%, 45%, and 60% (wt/wt) were 3D-printed. PCL/C-nHA60%-scaffolds were surface-modified by NaOH-treatment and collagen-immobilization. Physicomechanical and biological properties were investigated experimentally and by finite-element (FE) modeling. Scaffold surface-roughness enhanced by increasing C-nHA (1.7 - 6.1-fold), but decreased by surface-modification (0.6-fold). The contact angle decreased by increasing C-nHA (0.9 - 0.7-fold), and by surface-modification (0.5-fold). The zeta potential decreased by increasing C-nHA (3.2-9.9-fold). Average elastic modulus, compressive strength, and reaction force enhanced by increasing C-nHA and by surface-modification. FE modeling revealed that von Mises stress distribution became less homogeneous by increasing C-nHA, and by surface-modification. Maximal von Mises stress for 2% compression strain in all scaffolds did not exceed yield stress for bulk-material. 3D-printed PCL/C-nHA60% with surface-modification enhanced pre-osteoblast spreading, proliferation, collagen deposition, alkaline phosphatase activity, and mineralization. In conclusion, a novel biomimetic 3D-printed PCL-scaffold containing a high concentration C-nHA with surface-modification was successfully fabricated. It exhibited superior physicomechanical and biological properties, making it a promising biomaterial for bone tissue engineering.
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Affiliation(s)
- Ali Moghaddaszadeh
- Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Hadi Seddiqi
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, 1081 LA, The Netherlands
| | - Najmeh Najmoddin
- Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | | | - Jenneke Klein-Nulend
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, 1081 LA, The Netherlands
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12
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Kumar P, Kedaria D, Mahapatra C, Mohandas M, Chatterjee K. A designer cell culture insert with a nanofibrous membrane toward engineering an epithelial tissue model validated by cellular nanomechanics. NANOSCALE ADVANCES 2021; 3:4714-4725. [PMID: 36134314 PMCID: PMC9419865 DOI: 10.1039/d1na00280e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 07/04/2021] [Indexed: 05/13/2023]
Abstract
Engineered platforms for culturing cells of the skin and other epithelial tissues are useful for the regeneration and development of in vitro tissue models used in drug screening. Recapitulating the biomechanical behavior of the cells is one of the important hallmarks of successful tissue generation on these platforms. The biomechanical behavior of cells profoundly affects the physiological functions of the generated tissue. In this work, a designer nanofibrous cell culture insert (NCCI) device was developed, consisting of a free-hanging polymeric nanofibrous membrane. The free-hanging nanofibrous membrane has a well-tailored architecture, stiffness, and topography to better mimic the extracellular matrix of any soft tissue than conventional, flat tissue culture polystyrene (TCPS) surfaces. Human keratinocytes (HaCaT cells) cultured on the designer NCCIs exhibited a 3D tissue-like phenotype compared to the cells cultured on TCPS. Furthermore, the biomechanical characterization by bio-atomic force microscopy (Bio-AFM) revealed a markedly altered cellular morphology and stiffness of the cellular cytoplasm, nucleus, and cell-cell junctions. The nuclear and cytoplasmic moduli were reduced, while the stiffness of the cellular junctions was enhanced on the NCCI compared to cells on TCPS, which are indicative of the fluidic state and migratory phenotype on the NCCI. These observations were corroborated by immunostaining, which revealed enhanced cell-cell contact along with a higher expression of junction proteins and enhanced migration in a wound-healing assay. Taken together, these results underscore the role of the novel designer NCCI device as an in vitro platform for epithelial cells with several potential applications, including drug testing, disease modeling, and tissue regeneration.
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Affiliation(s)
- Prasoon Kumar
- Department of Materials Engineering, Indian Institute of Science C.V. Raman Avenue Bangalore 560012 India +91-80-22933408
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela 769008 India
| | - Dhaval Kedaria
- Department of Materials Engineering, Indian Institute of Science C.V. Raman Avenue Bangalore 560012 India +91-80-22933408
| | - Chinmaya Mahapatra
- Department of Materials Engineering, Indian Institute of Science C.V. Raman Avenue Bangalore 560012 India +91-80-22933408
- School of Chemical Engineering, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University Suwon 16419 Republic of Korea
| | - Monisha Mohandas
- Centre for BioSystems Science and Engineering, Indian Institute of Science C.V. Raman Avenue Bangalore 560012 India
| | - Kaushik Chatterjee
- Department of Materials Engineering, Indian Institute of Science C.V. Raman Avenue Bangalore 560012 India +91-80-22933408
- Centre for BioSystems Science and Engineering, Indian Institute of Science C.V. Raman Avenue Bangalore 560012 India
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13
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Joo G, Sultana T, Rahaman S, Bae SH, Jung HI, Lee BT. Polycaprolactone-gelatin membrane as a sealant biomaterial efficiently prevents postoperative anastomotic leakage with promoting tissue repair. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 32:1530-1547. [PMID: 33849401 DOI: 10.1080/09205063.2021.1917107] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Anastomotic leakage due to post-surgical suture line disruption is one of the crucial factors affecting patient's survival and quality of life. To resolve the poor healing of surgical anastomosis and protect suture sites leakage, fibrous membrane sealing patch was developed using a synthetic polymer (polycaprolactone (PCL)) and biopolymer (gelatin). Electrospinning was used to develop fibrous architecture of membranes fabricated in different ratios (15% (w/v) PCL: 15% (w/v) gelatin mixing ratio of 1:1, 1:2, 1:3 and 1:4). Experimental findings suggested that, higher gelatin content in the membranes reduced the fiber diameter and contact angle, leading to a more hydrophilic scaffold facilitating attachment to the defect site. The degradation rate of various PCL-gelatin membranes (P1G1, P1G2, P1G3 and P1G4) was proportional to the gelatin content. Cytocompatibility was assessed using L929 cells while the P1G4 (PCL: gelatin 1:4 ratio) scaffold exhibited optimum outcome. From in vivo study, the wound site healed significantly without any leakage when the sutured area of rat caecum was covered with P1G4 membrane whereas rats in the control group (suture only) showed leakage after two weeks of surgery. In summary, the P1G4 membrane has potential to be applied as a post-surgical leakage-preventing tissue repair biomaterial.
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Affiliation(s)
- Gyeongjin Joo
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - Tamanna Sultana
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea.,Institute of Tissue Regeneration, Soonchunhyang University, Cheonan, Republic of Korea
| | - Sohanur Rahaman
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - Sang Ho Bae
- Institute of Tissue Regeneration, Soonchunhyang University, Cheonan, Republic of Korea.,Department of General Surgery, Soonchunhyang University Hospital 31, Cheonan, Republic of Korea
| | - Hae Il Jung
- Institute of Tissue Regeneration, Soonchunhyang University, Cheonan, Republic of Korea.,Department of General Surgery, Soonchunhyang University Hospital 31, Cheonan, Republic of Korea
| | - Byong-Taek Lee
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea.,Institute of Tissue Regeneration, Soonchunhyang University, Cheonan, Republic of Korea
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14
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Ko KW, Choi B, Kang EY, Shin SW, Baek SW, Han DK. The antagonistic effect of magnesium hydroxide particles on vascular endothelial activation induced by acidic PLGA degradation products. Biomater Sci 2021; 9:892-907. [PMID: 33245077 DOI: 10.1039/d0bm01656j] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Although drug-eluting stents (DESs) are mainly coated with biodegradable polymers such as PLGA and PLLA, their acidic degradation products can alter the local microenvironment and affect the homeostasis of adjacent tissue. Previously, we developed anti-inflammatory PLGA-based materials including magnesium hydroxide (MH) to relieve the side effects caused by PLGA degradation. However, the underlying molecular mechanism of its protective effects has not yet been clarified. Here, we demonstrated the pathological mechanism of vascular endothelial activation caused by PLGA by-products. The PLGA by-products accumulated in HCAECs through MCT1, followed by oxidative stress and the activation of the MAPK/NF-κB signaling pathway. Finally, the PLGA by-products increased the expression of VCAM-1 as well as the secretion of proinflammatory cytokines. However, the addition of MH particles significantly diminished the activation of this molecular pathway and the expression of inflammation-related factors induced by acidic PLGA degradation products. Furthermore, Mg2+ released from MH particles restored endothelial function in both intracellular and extracellular spaces. Taken together, MH particles prevent the accumulation of PLGA degradation products in HCAECs, thereby repressing the associated vascular endothelial activation. These findings on the biochemical mechanisms are expected to provide important clues for addressing the safety issues in nearly all biodegradable polymer-based implants.
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Affiliation(s)
- Kyoung-Won Ko
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 13488, Republic of Korea.
| | - Bogyu Choi
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 13488, Republic of Korea.
| | - Eun Young Kang
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 13488, Republic of Korea.
| | - Sang-Woo Shin
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 13488, Republic of Korea.
| | - Seung-Woon Baek
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 13488, Republic of Korea.
| | - Dong Keun Han
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 13488, Republic of Korea.
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15
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Park SB, Sung MH, Uyama H, Han DK. Poly(glutamic acid): Production, composites, and medical applications of the next-generation biopolymer. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2020.101341] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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16
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Ryu HI, Koo MS, Kim S, Kim S, Park YA, Park SM. Uniform-thickness electrospun nanofiber mat production system based on real-time thickness measurement. Sci Rep 2020; 10:20847. [PMID: 33257811 PMCID: PMC7705742 DOI: 10.1038/s41598-020-77985-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 11/11/2020] [Indexed: 11/09/2022] Open
Abstract
Electrospinning is a simple versatile process used to produce nanofibers and collect them as a nanofiber mat. However, due to bending instability, electrospinning often produces a nanofiber mat with non-uniform mat thickness. In this study, we developed a uniform-thickness electrospun nanofiber mat (UTEN) production system with a movable collector based on real-time thickness measurement and thickness feedback control. This system is compatible with a collector with void regions such as a mesh-type collector, two-parallel-metal-plate collector, and ring-type collector, which facilitates the measurement of light transmittance across the produced nanofiber mat during electrospinning. A real-time measurement system was developed to measure light transmittance and convert it to the thickness of the nanofiber mat in real time using the Beer-Lambert law. Thickness feedback control was achieved by repeating the following sequences: (1) finding an optimal position of the movable collector based on the measured thickness of the nanofiber mat, (2) shifting the collector to an optimal position, and (3) performing electrospinning for a given time step. We found that the suggested thickness feedback control algorithm could significantly decrease the non-uniformity of the nanofiber mat by reducing the standard deviation by more than 8 and 3 times for the numerical simulation and experiments, respectively, when compared with the conventional electrospinning. As a pioneering research, this study will contribute to the development of an electrospinning system to produce robust and reliable nanofiber mats in many research and industrial fields such as biomedicine, environment, and energy.
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Affiliation(s)
- Hyun Il Ryu
- School of Mechanical Engineering, Pusan National University, Busan, 46241, South Korea
| | - Min Seok Koo
- School of Mechanical Engineering, Pusan National University, Busan, 46241, South Korea
| | - Seokjun Kim
- School of Mechanical Engineering, Pusan National University, Busan, 46241, South Korea
| | - Songkil Kim
- School of Mechanical Engineering, Pusan National University, Busan, 46241, South Korea
| | - Young-Ah Park
- Division of Cardiology, Inje University, Busan Paik Hospital, Busan, 47392, South Korea.
| | - Sang Min Park
- School of Mechanical Engineering, Pusan National University, Busan, 46241, South Korea.
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Park JK, Pham-Nguyen OV, Yoo HS. Coaxial Electrospun Nanofibers with Different Shell Contents to Control Cell Adhesion and Viability. ACS OMEGA 2020; 5:28178-28185. [PMID: 33163800 PMCID: PMC7643203 DOI: 10.1021/acsomega.0c03902] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 10/09/2020] [Indexed: 05/04/2023]
Abstract
Electrospun nanofibers are widely employed as cell culture matrices because their biomimetic structures resemble a natural extracellular matrix. However, due to the limited cell infiltration into nanofibers, three-dimensional (3D) construction of a cell matrix is not easily accomplished. In this study, we developed a method for the partial digestion of a nanofiber into fragmented nanofibers composed of gelatin and polycaprolactone (PCL). The PCL shells of the coaxial fragments were subsequently removed with different concentrations of chloroform to control the remaining PCL on the shell. The swelling and exposure of the gelatin core were manipulated by the remaining PCL shells. When cells were cultivated with the fragmented nanofibers, they were spontaneously assembled on the cell sheets. The cell adhesion and proliferation were significantly affected by the amount of PCL shells on the fragmented nanofibers.
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Affiliation(s)
- Jae Keun Park
- Department
of Biomedical Materials Engineering, Kangwon
National University, Chuncheon 24341, Republic of Korea
| | - Oanh-Vu Pham-Nguyen
- Department
of Biomedical Materials Engineering, Kangwon
National University, Chuncheon 24341, Republic of Korea
| | - Hyuk Sang Yoo
- Department
of Biomedical Materials Engineering, Kangwon
National University, Chuncheon 24341, Republic of Korea
- Institute
of Bioscience and Biotechnology, Kangwon
National University, Chuncheon 24341, Republic of Korea
- . Website: http://nano-bio.kangwon.ac.kr
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18
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Han G, Bedair TM, Kim DH, Park KH, Park W, Han DK. Improved mechanical and biological properties of biodegradable thinner poly(l-lactic acid) tubes by bi-directional drawing. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.06.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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