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Chen S, Huang Z, Visalakshan RM, Liu H, Bachhuka A, Wu Y, Dabare PRL, Luo P, Liu R, Gong Z, Xiao Y, Vasilev K, Chen Z, Chen Z. Plasma polymerized bio-interface directs fibronectin adsorption and functionalization to enhance "epithelial barrier structure" formation via FN-ITG β1-FAK-mTOR signaling cascade. Biomater Res 2022; 26:88. [PMID: 36572920 PMCID: PMC9791785 DOI: 10.1186/s40824-022-00323-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 11/15/2022] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Transepithelial medical devices are increasing utilized in clinical practices. However, the damage of continuous natural epithelial barrier has become a major risk factor for the failure of epithelium-penetrating implants. How to increase the "epithelial barrier structures" (focal adhesions, hemidesmosomes, etc.) becomes one key research aim in overcoming this difficulty. Directly targeting the in situ "epithelial barrier structures" related proteins (such as fibronectin) absorption and functionalization can be a promising way to enhance interface-epithelial integration. METHODS Herein, we fabricated three plasma polymerized bio-interfaces possessing controllable surface chemistry. Their capacity to adsorb and functionalize fibronectin (FN) from serum protein was compared by Liquid Chromatography-Tandem Mass Spectrometry. The underlying mechanisms were revealed by molecular dynamics simulation. The response of gingival epithelial cells regarding the formation of epithelial barrier structures was tested. RESULTS Plasma polymerized surfaces successfully directed distinguished protein adsorption profiles from serum protein pool, in which plasma polymerized allylamine (ppAA) surface favored adsorbing adhesion related proteins and could promote FN absorption and functionalization via electrostatic interactions and hydrogen bonds, thus subsequently activating the ITG β1-FAK-mTOR signaling and promoting gingival epithelial cells adhesion. CONCLUSION This study offers an effective perspective to overcome the current dilemma of the inferior interface-epithelial integration by in situ protein absorption and functionalization, which may advance the development of functional transepithelial biointerfaces. Tuning the surface chemistry by plasma polymerization can control the adsorption of fibronectin and functionalize it by exposing functional protein domains. The functionalized fibronectin can bind to human gingival epithelial cell membrane integrins to activate epithelial barrier structure related signaling pathway, which eventually enhances the formation of epithelial barrier structure.
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Affiliation(s)
- Shoucheng Chen
- grid.12981.330000 0001 2360 039XHospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University and Guangdong Provincial Key Laboratory of Stomatology, No.56, Lingyuan West Road, Yuexiu District, Guangzhou, 510055 China
| | - Zhuwei Huang
- grid.12981.330000 0001 2360 039XHospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University and Guangdong Provincial Key Laboratory of Stomatology, No.56, Lingyuan West Road, Yuexiu District, Guangzhou, 510055 China
| | | | - Haiwen Liu
- grid.12981.330000 0001 2360 039XHospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University and Guangdong Provincial Key Laboratory of Stomatology, No.56, Lingyuan West Road, Yuexiu District, Guangzhou, 510055 China
| | - Akash Bachhuka
- grid.410367.70000 0001 2284 9230Department of Electronics, Electric and Automatic Engineering, Rovira i Virgili University (URV), Tarragona, 43003 Spain
| | - You Wu
- grid.12981.330000 0001 2360 039XHospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University and Guangdong Provincial Key Laboratory of Stomatology, No.56, Lingyuan West Road, Yuexiu District, Guangzhou, 510055 China
| | - Panthihage Ruvini L. Dabare
- grid.1026.50000 0000 8994 5086Academic Unit of Science, Technology, Engineering and Mathematics (STEM), University of South Australia, Mawson Lakes, SA 5095 Australia
| | - Pu Luo
- grid.12981.330000 0001 2360 039XHospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University and Guangdong Provincial Key Laboratory of Stomatology, No.56, Lingyuan West Road, Yuexiu District, Guangzhou, 510055 China
| | - Runheng Liu
- grid.12981.330000 0001 2360 039XHospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University and Guangdong Provincial Key Laboratory of Stomatology, No.56, Lingyuan West Road, Yuexiu District, Guangzhou, 510055 China
| | - Zhuohong Gong
- grid.12981.330000 0001 2360 039XHospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University and Guangdong Provincial Key Laboratory of Stomatology, No.56, Lingyuan West Road, Yuexiu District, Guangzhou, 510055 China
| | - Yin Xiao
- grid.1024.70000000089150953Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, 4059 Australia
| | - Krasimir Vasilev
- grid.1026.50000 0000 8994 5086Academic Unit of Science, Technology, Engineering and Mathematics (STEM), University of South Australia, Mawson Lakes, SA 5095 Australia
| | - Zhuofan Chen
- grid.12981.330000 0001 2360 039XHospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University and Guangdong Provincial Key Laboratory of Stomatology, No.56, Lingyuan West Road, Yuexiu District, Guangzhou, 510055 China
| | - Zetao Chen
- grid.12981.330000 0001 2360 039XHospital of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University and Guangdong Provincial Key Laboratory of Stomatology, No.56, Lingyuan West Road, Yuexiu District, Guangzhou, 510055 China
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Rawat S, Misra N, Meena SS, Shelkar SS, Kumar N N, Goel NK, Kumar V. Plasma polymerized functional supermagnetic Fe 3O 4 nanostructured templates for laccase immobilization: A robust catalytic system for bio-inspired dye degradation. Environ Sci Pollut Res Int 2022; 29:82524-82540. [PMID: 35752670 DOI: 10.1007/s11356-022-21539-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/13/2022] [Indexed: 06/15/2023]
Abstract
Fe3O4 magnetic nanoparticles, synthesized using co-precipitation method, were epoxy functionalized via plasma polymerization of 2,3-epoxypropylmethacrylate (EPMA) precursor. The EPMA-functionalized Fe3O4 nanoparticles (EPMA-f-MN) were employed as templates for facile, one-step covalent immobilization of laccase enzyme at room temperature. Samples were rigorously characterized by FTIR, TGA, SEM, TEM, XRD techniques, while Mössbauer spectroscopy (MöS) and vibrating sample magnetometry (VSM) confirmed the supermagnetic nature of Fe3O4 nanoparticles. Activities of free and immobilized laccase (ImLac) were assayed by spectrophotometrically monitoring the enzymatic reduction of substrate 2,2-azino-bis(3-ethylthiazoline-6-sulfonate) (ABTS) at 420 nm, corresponding to the λmax of ABTS.+. In addition to possessing higher thermal stability and a broader pH tolerance window compared to free laccase, the supermagnetic property of the Fe3O4 renders the ImLac system conveniently recoverable and recyclable. Practical applicability of ImLac towards catalytic degradation of industrial dyes was also ably demonstrated using Acid Blue 193 (AB 193) as a commercially used model textile dye, which belongs to the family of azo dyes. Over 95% degradation of the dye was achieved within a period of 4 hours. ImLac could be used for more than 10 dye degradation cycles with >90 % of retention in enzyme activity.
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Affiliation(s)
- Swarnima Rawat
- Radiation Technology Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India
| | - Nilanjal Misra
- Radiation Technology Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Sher Singh Meena
- Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Shubhangi S Shelkar
- Radiation Technology Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Naveen Kumar N
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Narender Kumar Goel
- Radiation Technology Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Virendra Kumar
- Radiation Technology Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India.
- Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India.
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Lim H, Park Y, Seo Y, Park H, Cho YK, Jung D. Surface modification of polystyrene Petri dishes by plasma polymerized 4,7,10-trioxa-1,13-tridecanediamine for enhanced culturing and migration of bovine aortic endothelial cells. Biofouling 2020; 36:816-824. [PMID: 32942906 DOI: 10.1080/08927014.2020.1821878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/31/2020] [Accepted: 08/31/2020] [Indexed: 06/11/2023]
Abstract
Plasma surface modification is an effective method for changing material properties to control cell behavior on a surface. This study investigates the efficiency of a plasma polymerized 4,7,10-trioxa-1,13-tridecanediamine (ppTTDDA) film coated on a polystyrene (PS) Petri dish, which is a biocompatible surface with carbon- and oxygen-based chemical species. The adhesion, proliferation, and migration properties of bovine aortic endothelial cells (BAECs) were profoundly enhanced in the ppTTDDA-coated PS Petri dishes without extracellular matrix (ECM) proteins, when compared with the uncoated PS Petri dishes. These observations indicate that ppTTDDA-coated PS Petri dishes can directly interact with cells, regardless of cell adhesion molecules. The increased cell affinity was attributed to the high concentration of carboxyl group on the surface of the ppTTDDA film. Such a carboxyl surface showed an excellent ability to promote culturing of BAECs. Plasma surface modification techniques are effective in improving biocompatibility and provide a surface environment for cell culture.
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Affiliation(s)
- Hyuna Lim
- Department of Physics, Institute of Basic Science, Brain Korea 21 Physics Research Division, Sungkyunkwan University, Suwon, South Korea
| | - Yoonsoo Park
- Department of Physics, Institute of Basic Science, Brain Korea 21 Physics Research Division, Sungkyunkwan University, Suwon, South Korea
| | - Youngsik Seo
- Department of Molecular Biology and Institute of Nanosensor and Biotechnology, Dankook University, Cheonan, South Korea
| | - Heonyong Park
- Department of Molecular Biology and Institute of Nanosensor and Biotechnology, Dankook University, Cheonan, South Korea
| | - Yong Ki Cho
- Heat Treatment R&D Group, Korea Institute of Industrial Technology, Incheon, South Korea
| | - Donggeun Jung
- Department of Physics, Institute of Basic Science, Brain Korea 21 Physics Research Division, Sungkyunkwan University, Suwon, South Korea
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Meydan AE, Özgüzar HF, Göçmen JS, Mutlu M. Controlled drug release performance of plasma modified slab and mat matrices: A model study with "Ampicillin". Int J Pharm 2020; 587:119586. [PMID: 32663583 DOI: 10.1016/j.ijpharm.2020.119586] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 06/23/2020] [Accepted: 06/24/2020] [Indexed: 12/16/2022]
Abstract
Two types of ampicillin carrier platforms were prepared with polycaprolactone (PCL) and the release behavior of a hydrophilic model drug (ampicillin sodium salt) from those matrices was investigated. Spin coating and electrospinning techniques were used to prepare slab and mat platforms, respectively. Ampicillin sodium salt (ASS) at 5% (w:w) concentration was loaded into the slab or mat structures of PCL. The thickness of the slab was measured 3.349 ± 0.345 μm and surface morphology of the slabs showed uniform PCL spherulites. On the other hand, fiber diameter of PCL and ASS loaded PCL (ASSLPCL) was measured 604 ± 176 nm and 549 ± 119 nm, respectively. The dynamic behavior of the controlled release was improved by a very thin film (<100 nm) formation of sulfur hexafluoride (SF6) over the surface via plasma polymerization. Plasma coating was facilitated and speed up the drug diffusion, then led to 45.60 ± 6.46% and 63.67 ± 4.33% enhancement of drug from slab and mat, respectively. Transport mechanism from all matrices showed a Fickian diffusion behavior and plasma modification of the surface did not affected the mechanism. The in vitro antibacterial property of ASS loaded matrices against S. aureus and E. coli was studied through the comparison of bacterial inhibition zones and ASS showed antibacterial effect after all processes.
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Bülbül E, Hegemann D, Geue T, Heuberger M. How the dynamics of subsurface hydration regulates protein-surface interactions. Colloids Surf B Biointerfaces 2020; 190:110908. [PMID: 32163842 DOI: 10.1016/j.colsurfb.2020.110908] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/13/2020] [Accepted: 02/25/2020] [Indexed: 10/24/2022]
Abstract
The role of water structure near surfaces has been scrutinized extensively because it is accepted to control protein-surface interactions, however, often avoiding effects of hydration dynamics. Relating to this, we have recently discussed how the amount and state of water, accumulated within various hydrophobic-to-hydrophilic subsurface gradients of plasma polymer films, influence the magnitude of adsorbed bovine serum albumin, spurring the hypothesis of the presence of a subsurface dipolar field. This study now analyzes the kinetics of hydration by systematically introducing modified gradient architectures and relating different hydration times to the adsorption of a dipolar probing protein. We find that dry-stored subsurface gradients, owing nominally identical surface characteristics, exhibits comparable surface potential and protein adsorption values, while they behave in a different manner at transient hydration times of few hours, before reaching near-equilibrium state of the hydration. A characteristic hydration time is found where protein adsorption on gradient films is minimal, unveiling the transient nature of the effect. In general, protein adsorption is sensitive to the time allowed for hydration of the adsorbent surface, supporting our initial hypothesis inasmuch as the quantity as well as quality of water inside the subsurface matrix is crucial for controlling protein-surface interactions.
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Affiliation(s)
- Ezgi Bülbül
- Laboratory for Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, 9014, St. Gallen, Switzerland; Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich, 8093, Zurich, Switzerland.
| | - Dirk Hegemann
- Laboratory for Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, 9014, St. Gallen, Switzerland.
| | - Thomas Geue
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute (PSI), 5232, Villigen, Switzerland.
| | - Manfred Heuberger
- Laboratory for Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, 9014, St. Gallen, Switzerland; Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich, 8093, Zurich, Switzerland.
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Siow KS, Abdul Rahman AS, Ng PY, Majlis BY. Sulfur and nitrogen containing plasma polymers reduces bacterial attachment and growth. Mater Sci Eng C Mater Biol Appl 2020; 107:110225. [PMID: 31761201 DOI: 10.1016/j.msec.2019.110225] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 09/06/2019] [Accepted: 09/17/2019] [Indexed: 11/23/2022]
Abstract
Role of sulfur (S) and nitrogen (N) groups in promoting cell adhesion or commonly known as biocompatibility, is well established, but their role in reducing bacterial attachment and growth is less explored or not well-understood. Natural sulfur-based compounds, i.e. sulfide, sulfoxide and sulfinic groups, have shown to inhibit bacterial adhesion and biofilm formation. Hence, we mimicked these surfaces by plasma polymerizing thiophene (ppT) and air-plasma treating this ppT to achieve coatings with S of similar oxidation states as natural compounds (ppT-air). In addition, the effects of these N and S groups from ppT-air were also compared with the biocompatible amine-amide from n-heptylamine plasma polymer. Crystal violet assay and live and dead fluorescence staining of E. coli and S. aureus showed that all the N and S coated surfaces generated, including ppHA, ppT and ppT-air, produced similarly potent, growth reduction of both bacteria by approximately 65% at 72 h compared to untreated glass control. The ability of osteogenic differentiation in Wharton's jelly mesenchymal stem cells (WJ-MSCs) were also used to test the cell biocompatibility of these surfaces. Alkaline phosphatase assay and scanning electron microscopy imaging of these WJ-MSCs growths indicated that ppHA, and ppT-air were cell-friendly surfaces, with ppHA showing the highest osteogenic activity. In summary, the N and S containing surfaces could reduce bacteria growth while promoting mammalian cell growth, thus serve as potential candidate surfaces to be explored further for biomaterial applications.
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Chen Z, Visalakshan RM, Guo J, Wei F, Zhang L, Chen L, Lin Z, Vasilev K, Xiao Y. Plasma deposited poly-oxazoline nanotextured surfaces dictate osteoimmunomodulation towards ameliorative osteogenesis. Acta Biomater 2019; 96:568-81. [PMID: 31271882 DOI: 10.1016/j.actbio.2019.06.058] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/26/2019] [Accepted: 06/27/2019] [Indexed: 12/11/2022]
Abstract
Developing "osteoimmune-smart" bone substitute materials have become the forefront of research in bone regeneration. Biocompatible polymer coatings are applied widely to improve the bioactivity of bone substitute materials. In this context, polyoxazolines (Pox) have attracted substantial attention recently due to properties such as biocompatibility, stability, and low biofouling. In view of these useful properties, it is interesting to explore the capacity of Pox as an osteoimmunomodulatory agent to generate a favorable osteoimmune environment for osteogenesis. We applied a technique called plasma polymerization and succeeded in preparing Pox-like coatings (Ppox) and engineered their nanotopography at the nanoscale. We found that Ppox switched macrophages towards M2 extreme, thus inhibiting the release of inflammatory cytokines. The underlying mechanism may be related to the suppression of TLR pathway. The generated osteoimmune environment improved osteogenesis while inhibited osteoclastogenesis. This may be related to the release of osteogenic factors, especially Wnt10b from macrophages. The addition of nanotopography (16 nm, 38 nm, 68 nm) can tune the Ppox-mediated inhibition on inflammation and osteoclastic activities, while no significant effects were observed within the tested nano sizes on the Ppox-mediated osteogenesis. These results collectively suggest that Ppox can be useful as an effective osteoiumunomodulatory agent to endow bone substitute materials with favourable osteoimmunomodulatory property. STATEMENT OF SIGNIFICANCE: In this study, we succeeded in preparing plasma deposited Pox-like nano-coatings (Ppox) via plasma polymerization and found that Ppox nanotopographies are useful osteoimmunomodulatory tools. Their osteoimmunodolatory effects and underlying mechanisms are unveiled. It is the first investigation into the feasibility of applying poly-oxazoline as an osteoimmunomodulatory agent. This expand the application of poly-oxazoline into the forefront in bone regeneration area for the development of advanced "osteoimmune-smart" bone substitute materials.
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Misra N, Kumar V, Rawat S, Goel NK, Shelkar SA, Singhal RK, Varshney L. Mitigation of Cr(VI) toxicity using Pd-nanoparticles immobilized catalytic reactor (Pd-NICaR) fabricated via plasma and gamma radiation. Environ Sci Pollut Res Int 2018; 25:16101-16110. [PMID: 29594904 DOI: 10.1007/s11356-018-1709-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 03/07/2018] [Indexed: 06/08/2023]
Abstract
Catalytic reduction of Cr(VI) to less toxic Cr(III) form using metal nanoparticles is one of the novel approaches adopted to deal with Cr toxicity. In this work, we report the fabrication of a facile, reusable, and robust Pd nanoparticles-immobilized catalytic reactor (Pd-NICaR) system using green, environment-friendly gamma radiolytic, and plasma polymerization processes. A room temperature, RF-powered plasma polymerization process was employed to functionalize a polyethylene-polypropylene (PE-PP) non-woven matrix with epoxy group containing monomer 2,3-epoxypropyl methacrylate (EPMA). EPMA-functionalized PE-PP (EPMA-f-PE-PP) substrate was subsequently used as a template for in situ generation and immobilization of Pd NPs via gamma radiolytic route. The samples were characterized using FTIR, SEM, XPS, and XRF techniques. The catalytic efficacy of Pd-NICaR towards Cr(VI) reduction, in the presence of formic acid (FA) as a reductant, was investigated spectrophotometrically, and reaction parameters were optimized at reaction temperature of 50 °C and [FA]/[Cr(VI)] = 680 to achieve catalytic reduction efficiency of 99.7% within 10 min in batch process. The system showed excellent reusability (~ 20 cycles) and storage stability (> 30 days) without substantial loss (~ 11%) of activity. Practical applicability of the robust catalytic system towards Cr(VI) toxicity mitigation was established in continuous flow mode using a fixed-bed column reactor.
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Affiliation(s)
- Nilanjal Misra
- Radiation Technology Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India.
| | - Virendra Kumar
- Radiation Technology Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India
| | - Swarnima Rawat
- Radiation Technology Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Narender Kumar Goel
- Radiation Technology Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Shubhangi A Shelkar
- Radiation Technology Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Rakesh Kumar Singhal
- Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Lalit Varshney
- Radiation Technology Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India
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Shirazi HS, Rogers N, Michelmore A, Whittle JD. Particle aggregates formed during furfuryl methacrylate plasma polymerization affect human mesenchymal stem cell behaviour. Colloids Surf B Biointerfaces 2018; 161:261-268. [PMID: 29096370 DOI: 10.1016/j.colsurfb.2017.10.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 09/22/2017] [Accepted: 10/26/2017] [Indexed: 10/18/2022]
Abstract
Human Mesenchymal Stem cells (hMSCs) are becoming a major focus in biomedical fields. Application of in vitro expanded hMSCs to treat numerous ailments has led to a commercial emphasis on improving hMSC growth ex vivo. Production of substrate independent, novel thin films is one potential tool for production of commercial viable hMSC expansion. Plasma polymerization allow controlled chemical optimisation of large scale surface areas in a substrate independent manner. Previous study shown that plasma polymerized Furfuryl Methacrylate (ppFMA) surfaces allowed primary fibroblast cells adhesion and proliferation. However, under some deposition conditions, particle aggregates formation was observed. These aggregates had the effect of disrupting cell attachment, despite being chemically indistinguishable from the underlying surface. Herein, hMSCs were cultured on ppFMA surfaces to determine their suitability for stem cell culture and observe the effect of particle aggregates on hMSC attachment and growth. Both metabolic and DNA quantification assays showed that surfaces with particle aggregates had lower numbers of attached cells and slower growth. Uniform surfaces without aggregates showed higher cell attachment and growth levels, which were comparable to Thermanox. Phenotypic analysis showed that there was no change to hMSCs phenotype after 7 & 14days of culture on uniform ppFMA surface. Further investigation using time-lapse image analysis indicated that particle aggregates reduced cell attachment by presenting a physically weak boundary layer, which was damaged by intracellular tension during cell spreading. ppFMA surface can provide a stable substrate independent hMSCs expansion interface that could be applied to larger scale bioreactors, beads or scaffolds.
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Affiliation(s)
- Hanieh Safizadeh Shirazi
- Future Industries Institute, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia; Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM), Mawson Lakes, SA 5095, Australia.
| | - Nicholas Rogers
- Future Industries Institute, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia; Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM), Mawson Lakes, SA 5095, Australia
| | - Andrew Michelmore
- Future Industries Institute, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia; Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM), Mawson Lakes, SA 5095, Australia; School of Engineering, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia
| | - Jason D Whittle
- Future Industries Institute, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia; Cooperative Research Centre for Cell Therapy Manufacturing (CRC-CTM), Mawson Lakes, SA 5095, Australia; School of Engineering, University of South Australia, Mawson Lakes, Adelaide, SA 5095, Australia
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Costoya A, Ballarin FM, Llovo J, Concheiro A, Abraham GA, Alvarez-Lorenzo C. HMDSO-plasma coated electrospun fibers of poly(cyclodextrin)s for antifungal dressings. Int J Pharm 2016; 513:518-527. [PMID: 27667755 DOI: 10.1016/j.ijpharm.2016.09.064] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 09/19/2016] [Accepted: 09/21/2016] [Indexed: 11/19/2022]
Abstract
Electrospun mats containing cyclodextrin polymers (poly-αCD or poly-βCD) were developed to act as wound dressings showing tunable release rate of the antifungal agent fluconazole incorporated forming inclusion complexes. Poly-αCD and poly-βCD were prepared via cross-linking with epichlorohydrin (EPI) as water-soluble large molecular weight polymers. Then, polyCDs forming complexes with fluconazole were mixed with poly-(ε-caprolactone) (PCL) or poly(N-vinylpyrrolidone) (PVP) for electrospinning. Obtained bead-free fibers showed a random distribution, diameters in the 350-850nm range, and a variety of physical stability behaviors in aqueous environment. Mats were coated by hexamethyldisiloxane (HMDSO) plasma polymerization to create a hydrophobic layer that prevented rapid drug diffusion. HMDSO coating was evidenced by the Si content of mat surface (EDX analysis) and by the increase in the water contact angle (up to 130°). In physiological-mimicking medium, non-treated mats showed burst release of fluconazole, whereas HMDSO-coated mats sustained the release and delayed disintegration of PVP-based mats. Antifungal tests evidenced that both coated and non-coated mats efficiently inhibited the growth of Candida albicans.
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Affiliation(s)
- Alejandro Costoya
- Departamento de Farmacia y Tecnología Farmacéutica, R+DPharma Group (GI-1645), Facultad de Farmacia, and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15872 Santiago de Compostela, Spain
| | - Florencia Montini Ballarin
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales, Universidad Nacional de Mar del Plata-CONICET, Mar del Plata, Argentina
| | - Jose Llovo
- Servicio de Microbiología y Parasitología, Complejo Hospitalario Universitario de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Angel Concheiro
- Departamento de Farmacia y Tecnología Farmacéutica, R+DPharma Group (GI-1645), Facultad de Farmacia, and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15872 Santiago de Compostela, Spain
| | - Gustavo A Abraham
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales, Universidad Nacional de Mar del Plata-CONICET, Mar del Plata, Argentina
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacia y Tecnología Farmacéutica, R+DPharma Group (GI-1645), Facultad de Farmacia, and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15872 Santiago de Compostela, Spain.
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Owen R, Sherborne C, Paterson T, Green NH, Reilly GC, Claeyssens F. Emulsion templated scaffolds with tunable mechanical properties for bone tissue engineering. J Mech Behav Biomed Mater 2016; 54:159-72. [PMID: 26458114 PMCID: PMC4717122 DOI: 10.1016/j.jmbbm.2015.09.019] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 09/09/2015] [Accepted: 09/14/2015] [Indexed: 11/01/2022]
Abstract
Polymerised High Internal Phase Emulsions (PolyHIPEs) are manufactured via emulsion templating and exhibit a highly interconnected microporosity. These materials are commonly used as thin membranes for 3D cell culture. This study uses emulsion templating in combination with microstereolithography to fabricate PolyHIPE scaffolds with a tightly controlled and reproducible architecture. This combination of methods produces hierarchical structures, where the microstructural properties can be independently controlled from the scaffold macrostructure. PolyHIPEs were fabricated with varying ratios of two acrylate monomers (2-ethylhexyl acrylate (EHA) and isobornyl acrylate (IBOA)) and varying nominal porosity to tune mechanical properties. Young's modulus, ultimate tensile stress (UTS) and elongation at failure were determined for twenty EHA/IBOA compositions. Moduli ranged from 63.01±9.13 to 0.36±0.04MPa, UTS from 2.03±0.33 to 0.11±0.01MPa and failure strain from 21.86±2.87% to 2.60±0.61%. Selected compositions were fabricated into macro-porous woodpile structures, plasma treated with air or acrylic acid and seeded with human embryonic stem-cell derived mesenchymal progenitor cells (hES-MPs). Confocal and two-photon microscopy confirmed cell proliferation and penetration into the micro- and macro-porous architecture. The scaffolds supported osteogenic differentiation of mesenchymal cells and interestingly, the stiffest IBOA-based scaffolds that were plasma treated with acrylic acid promoted osteogenesis more strongly than the other scaffolds.
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Affiliation(s)
- Robert Owen
- Department of Materials Science and Engineering, University of Sheffield, INSIGNEO Institute for in silico medicine, The Pam Liversidge Building, Sir Frederick Mappin Building, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - Colin Sherborne
- Department of Materials Science and Engineering, University of Sheffield, The Kroto Research Institute, North Campus, Broad Lane, Sheffield S3 7HQ, United Kingdom
| | - Thomas Paterson
- Department of Materials Science and Engineering, University of Sheffield, The Kroto Research Institute, North Campus, Broad Lane, Sheffield S3 7HQ, United Kingdom
| | - Nicola H Green
- Department of Materials Science and Engineering, University of Sheffield, The Kroto Research Institute, North Campus, Broad Lane, Sheffield S3 7HQ, United Kingdom
| | - Gwendolen C Reilly
- Department of Materials Science and Engineering, University of Sheffield, INSIGNEO Institute for in silico medicine, The Pam Liversidge Building, Sir Frederick Mappin Building, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, University of Sheffield, The Kroto Research Institute, North Campus, Broad Lane, Sheffield S3 7HQ, United Kingdom.
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Gogoi D, Barman T, Choudhury B, Khan M, Chaudhari Y, Dehingia M, Pal AR, Bailung H, Chutia J. Immobilization of trypsin on plasma prepared Ag/PPAni nanocomposite film for efficient digestion of protein. Mater Sci Eng C Mater Biol Appl 2014; 43:237-42. [PMID: 25175210 DOI: 10.1016/j.msec.2014.07.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 05/22/2014] [Accepted: 07/03/2014] [Indexed: 10/25/2022]
Abstract
This work demonstrates the efficacy of a support matrix prepared by plasma process for trypsin immobilization without any surface activator. Plasma polymerization cum sputtering process is used to prepare the nanocomposite support matrix. Plasma sputtered silver nanoparticles (AgNPs) are uniformly embedded into plasma polymerized aniline (PPAni) film. Various characterization tools are employed to study the surface morphology, microstructure and chemical composition of the support matrices. Trypsin is immobilized onto the support matrix via the formation of covalent bond between them. Plasma generated free radicals on composite films activate the support matrix and make it efficient for increasing the tertiary enzyme stability via multipoint covalent attachment. Trypsin immobilized onto Ag/PPAni matrix has more hydrolyzing capacity of bovine serum albumin (BSA) than free trypsin as well as trypsin immobilized onto PPAni films.
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Affiliation(s)
- Dolly Gogoi
- Physical Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati 781035, India
| | - Tapan Barman
- Physical Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati 781035, India
| | - Bula Choudhury
- Guwahati Biotech Park, Technology Complex, IIT-Guwahati, Guwahati 781039, India
| | - Mojibur Khan
- Life Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati 781035, India
| | - Yogesh Chaudhari
- Life Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati 781035, India
| | - Madhusmita Dehingia
- Life Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati 781035, India
| | - Arup Ratan Pal
- Physical Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati 781035, India.
| | - Heremba Bailung
- Physical Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati 781035, India
| | - Joyanti Chutia
- Physical Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati 781035, India
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Guex AG, Frobert A, Valentin J, Fortunato G, Hegemann D, Cook S, Carrel TP, Tevaearai HT, Giraud MN. Plasma-functionalized electrospun matrix for biograft development and cardiac function stabilization. Acta Biomater 2014; 10:2996-3006. [PMID: 24531014 DOI: 10.1016/j.actbio.2014.01.006] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 12/17/2013] [Accepted: 01/02/2014] [Indexed: 12/30/2022]
Abstract
Cardiac tissue engineering approaches can deliver large numbers of cells to the damaged myocardium and have thus increasingly been considered as a possible curative treatment to counteract the high prevalence of progressive heart failure after myocardial infarction (MI). Optimal scaffold architecture and mechanical and chemical properties, as well as immune- and bio-compatibility, need to be addressed. We demonstrated that radio-frequency plasma surface functionalized electrospun poly(ɛ-caprolactone) (PCL) fibres provide a suitable matrix for bone-marrow-derived mesenchymal stem cell (MSC) cardiac implantation. Using a rat model of chronic MI, we showed that MSC-seeded plasma-coated PCL grafts stabilized cardiac function and attenuated dilatation. Significant relative decreases of 13% of the ejection fraction (EF) and 15% of the fractional shortening (FS) were observed in sham treated animals; respective decreases of 20% and 25% were measured 4 weeks after acellular patch implantation, whereas a steadied function was observed 4 weeks after MSC-patch implantation (relative decreases of 6% for both EF and FS).
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Testrich H, Rebl H, Finke B, Hempel F, Nebe B, Meichsner J. Aging effects of plasma polymerized ethylenediamine (PPEDA) thin films on cell-adhesive implant coatings. Mater Sci Eng C Mater Biol Appl 2013; 33:3875-80. [PMID: 23910290 DOI: 10.1016/j.msec.2013.05.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Revised: 03/27/2013] [Accepted: 05/10/2013] [Indexed: 11/23/2022]
Abstract
Thin plasma polymer films from ethylenediamine were deposited on planar substrates placed on the powered electrode of a low pressure capacitively coupled 13.56 MHz discharge. The chemical composition of the plasma polymer films was analyzed by Fourier Transform Infrared Reflection Absorption Spectroscopy (FT-IRRAS) as well as by X-ray photoelectron spectroscopy (XPS) after derivatization of the primary amino groups. The PPEDA films undergo an alteration during the storage in ambient air, particularly, due to reactions with oxygen. The molecular changes in PPEDA films were studied over a long-time period of 360 days. Simultaneously, the adhesion of human osteoblast-like cells MG-63 (ATCC) was investigated on PPEDA coated corundum blasted titanium alloy (Ti-6Al-4V), which is applied as implant material in orthopedic surgery. The cell adhesion was determined by flow cytometry and the cell shape was analyzed by scanning electron microscopy. Compared to uncoated reference samples a significantly enhanced cell adhesion and proliferation were measured for PPEDA coated samples, which have been maintained after long-time storage in ambient air and additional sterilization by γ-irradiation.
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