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Oguntade E, Wigham C, Owuor L, Aryal U, O'Grady K, Acierto A, Zha RH, Henderson JH. Dry and wet wrinkling of a silk fibroin biopolymer by a shape-memory material with insight into mechanical effects on secondary structures in the silk network. J Mater Chem B 2024; 12:6351-6370. [PMID: 38864220 DOI: 10.1039/d4tb00112e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
Surface wrinkling provides an approach to modify the surfaces of biomedical devices to better mimic features of the extracellular matrix and guide cell attachment, proliferation, and differentiation. Biopolymer wrinkling on active materials holds promise but is poorly explored. Here we report a mechanically actuated assembly process to generate uniaxial micro-and nanosized silk fibroin (SF) wrinkles on a thermo-responsive shape-memory polymer (SMP) substrate, with wrinkling demonstrated under both dry and hydrated (cell compatible) conditions. By systematically investigating the influence of SMP programmed strain magnitude, film thickness, and aqueous media on wrinkle stability and morphology, we reveal how to control the wrinkle sizes on the micron and sub-micron length scale. Furthermore, as a parameter fundamental to SMPs, we demonstrate that the temperature during the recovery process can also affect the wrinkle characteristics and the secondary structures in the silk network. We find that with increasing SMP programmed strain magnitude, silk wrinkled topographies with increasing wavelengths and amplitudes are achieved. Furthermore, silk wrinkling is found to increase β-sheet content, with spectroscopic analysis suggesting that the effect may be due primarily to tensile (e.g., Poisson effect and high-curvature wrinkle) loading modes in the SF, despite the compressive bulk deformation (uniaxial contraction) used to produce wrinkles. Silk wrinkles fabricated from sufficiently thick films (roughly 250 nm) persist after 24 h in cell culture medium. Using a fibroblast cell line, analysis of cellular response to the wrinkled topographies reveals high viability and attachment. These findings demonstrate use of wrinkled SF films under physiologically relevant conditions and suggest the potential for biopolymer wrinkles on biomaterials surfaces to find application in cell mechanobiology, wound healing, and tissue engineering.
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Affiliation(s)
- Elizabeth Oguntade
- Department of Biomedical & Chemical Engineering, Syracuse University, Syracuse, NY 13244, USA.
- BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, NY 13244, USA
| | - Caleb Wigham
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Luiza Owuor
- Department of Biomedical & Chemical Engineering, Syracuse University, Syracuse, NY 13244, USA.
- BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, NY 13244, USA
| | - Ujjwal Aryal
- Department of Biomedical & Chemical Engineering, Syracuse University, Syracuse, NY 13244, USA.
- BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, NY 13244, USA
| | - Kerrin O'Grady
- Department of Biomedical & Chemical Engineering, Syracuse University, Syracuse, NY 13244, USA.
- BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, NY 13244, USA
| | - Anthony Acierto
- Department of Biomedical & Chemical Engineering, Syracuse University, Syracuse, NY 13244, USA.
- BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, NY 13244, USA
| | - R Helen Zha
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - James H Henderson
- Department of Biomedical & Chemical Engineering, Syracuse University, Syracuse, NY 13244, USA.
- BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, NY 13244, USA
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2
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Zhang A, Wong JKU, Redzikultsava K, Baldry M, Alavi SK, Wang Z, van Koten E, Weiss A, Bilek M, Yeo GC, Akhavan B. A cost-effective and enhanced mesenchymal stem cell expansion platform with internal plasma-activated biofunctional interfaces. Mater Today Bio 2023; 22:100727. [PMID: 37529421 PMCID: PMC10388840 DOI: 10.1016/j.mtbio.2023.100727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 06/30/2023] [Accepted: 07/07/2023] [Indexed: 08/03/2023] Open
Abstract
Mesenchymal stem cells (MSCs) used for clinical applications require in vitro expansion to achieve therapeutically relevant numbers. However, conventional planar cell expansion approaches using tissue culture vessels are inefficient, costly, and can trigger MSC phenotypic and functional decline. Here we present a one-step dry plasma process to modify the internal surfaces of three-dimensional (3D) printed, high surface area to volume ratio (high-SA:V) porous scaffolds as platforms for stem cell expansion. To address the long-lasting challenge of uniform plasma treatment within the micrometre-sized pores of scaffolds, we developed a packed bed plasma immersion ion implantation (PBPI3) technology by which plasma is ignited inside porous materials for homogeneous surface activation. COMSOL Multiphysics simulations support our experimental data and provide insights into the role of electrical field and pressure distribution in plasma ignition. Spatial surface characterisation inside scaffolds demonstrates the homogeneity of PBPI3 activation. The PBPI3 treatment induces radical-containing chemical structures that enable the covalent attachment of biomolecules via a simple, non-toxic, single-step incubation process. We showed that PBPI3-treated scaffolds biofunctionalised with fibroblast growth factor 2 (FGF2) significantly promoted the expansion of MSCs, preserved cell phenotypic expression, and multipotency, while reducing the usage of costly growth factor supplements. This breakthrough PBPI3 technology can be applied to a wide range of 3D polymeric porous scaffolds, paving the way towards developing new biomimetic interfaces for tissue engineering and regenerative medicine.
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Affiliation(s)
- Anyu Zhang
- School of Biomedical Engineering, University of Sydney, NSW 2006, Australia
- School of Physics, University of Sydney, NSW 2006, Australia
- Sydney Nano Institute, University of Sydney, NSW 2006, Australia
| | - Johnny Kuan Un Wong
- Charles Perkins Centre, University of Sydney, NSW 2006, Australia
- School of Life and Environmental Sciences, University of Sydney, NSW 2006, Australia
- Sydney Nano Institute, University of Sydney, NSW 2006, Australia
| | - Katazhyna Redzikultsava
- School of Biomedical Engineering, University of Sydney, NSW 2006, Australia
- School of Physics, University of Sydney, NSW 2006, Australia
| | - Mark Baldry
- School of Biomedical Engineering, University of Sydney, NSW 2006, Australia
- School of Physics, University of Sydney, NSW 2006, Australia
- Sydney Nano Institute, University of Sydney, NSW 2006, Australia
| | - Seyedeh Kh Alavi
- School of Biomedical Engineering, University of Sydney, NSW 2006, Australia
- School of Physics, University of Sydney, NSW 2006, Australia
| | - Ziyu Wang
- Charles Perkins Centre, University of Sydney, NSW 2006, Australia
- School of Life and Environmental Sciences, University of Sydney, NSW 2006, Australia
| | | | - Anthony Weiss
- Charles Perkins Centre, University of Sydney, NSW 2006, Australia
- School of Life and Environmental Sciences, University of Sydney, NSW 2006, Australia
| | - Marcela Bilek
- School of Biomedical Engineering, University of Sydney, NSW 2006, Australia
- School of Physics, University of Sydney, NSW 2006, Australia
- Charles Perkins Centre, University of Sydney, NSW 2006, Australia
- Sydney Nano Institute, University of Sydney, NSW 2006, Australia
| | - Giselle C Yeo
- Charles Perkins Centre, University of Sydney, NSW 2006, Australia
- School of Life and Environmental Sciences, University of Sydney, NSW 2006, Australia
| | - Behnam Akhavan
- School of Biomedical Engineering, University of Sydney, NSW 2006, Australia
- School of Physics, University of Sydney, NSW 2006, Australia
- Sydney Nano Institute, University of Sydney, NSW 2006, Australia
- School of Engineering, University of Newcastle, Callaghan, NSW 2308, Australia
- Hunter Medical Research Institute (HMRI), Precision Medicine Program, New Lambton Heights, NSW, 2305, Australia
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3
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Ali B, Atif M, Perviaz M, Irshad A, Abdullah M, Mobeen MA. Catalyst-free synthesis of low-temperature thermally actuated shape memory polyurethanes with modified biobased plasticizers. RSC Adv 2022; 13:506-515. [PMID: 36605674 PMCID: PMC9769378 DOI: 10.1039/d2ra06862a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022] Open
Abstract
Recent years have seen research into developing specific application-based materials with particular components. Bio-based polyurethanes (PUs) with self-tightening effect through shape recovery at low temperature have been designed from sesame oil-based plasticizer (HSSO). Without using a catalyst, the produced plasticizer was used to create PU samples. In contrast, orcein-based PU has been created both with and without HSSO. The prepared samples have been analyzed through instrumental as well as chemical analyses for surface chemistry, thermal stability and morphology. The gel content and water absorption capacity of HSSO based PU samples has been observed to be 99.27% and 14.94%, respectively. Shape memory study of the PU samples revealed that HSSO-based PU showed fast shape recovery at 60 °C with shape recovery rate (R r) and shape fixing rate (R f) of 94.44% and 5%, respectively, in 150 seconds, whereas at 36 °C the sample showed 85% R r in 15 minutes with 93.1196 N force and 52.78% R r without force. Low-temperature thermal actuation and high water uptake highlight the prepared samples as suitable candidates for self-tightening structures in textile and biomedical fields.
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Affiliation(s)
- Basharat Ali
- Chemistry Department, University of Education LahoreVehari Campus, Officers' ColonyVehari-61100PunjabPakistan+92-3024757979
| | - Muhammad Atif
- Chemistry Department, University of Education LahoreVehari Campus, Officers' ColonyVehari-61100PunjabPakistan+92-3024757979
| | - Muhammad Perviaz
- Department of Basic & Applied Chemistry, Faculty of Science & Technology, University of Central PunjabLahorePakistan
| | - Adnan Irshad
- Chemistry Department, University of Education LahoreVehari Campus, Officers' ColonyVehari-61100PunjabPakistan+92-3024757979
| | - Muhammad Abdullah
- Chemistry Department, University of Education LahoreVehari Campus, Officers' ColonyVehari-61100PunjabPakistan+92-3024757979
| | - Muhammad Ahmad Mobeen
- Chemistry Department, University of Education LahoreVehari Campus, Officers' ColonyVehari-61100PunjabPakistan+92-3024757979
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4
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Cockerill I, See CW, Young ML, Wang Y, Zhu D. Designing Better Cardiovascular Stent Materials - A Learning Curve. ADVANCED FUNCTIONAL MATERIALS 2021; 31:2005361. [PMID: 33708033 PMCID: PMC7942182 DOI: 10.1002/adfm.202005361] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Indexed: 05/07/2023]
Abstract
Cardiovascular stents are life-saving devices and one of the top 10 medical breakthroughs of the 21st century. Decades of research and clinical trials have taught us about the effects of material (metal or polymer), design (geometry, strut thickness, and the number of connectors), and drug-elution on vasculature mechanics, hemocompatibility, biocompatibility, and patient health. Recently developed novel bioresorbable stents are intended to overcome common issues of chronic inflammation, in-stent restenosis, and stent thrombosis associated with permanent stents, but there is still much to learn. Increased knowledge and advanced methods in material processing have led to new stent formulations aimed at improving the performance of their predecessors but often comes with potential tradeoffs. This review aims to discuss the advantages and disadvantages of stent material interactions with the host within five areas of contrasting characteristics, such as 1) metal or polymer, 2) bioresorbable or permanent, 3) drug elution or no drug elution, 4) bare or surface-modified, and 5) self-expanding or balloon-expanding perspectives, as they relate to pre-clinical and clinical outcomes and concludes with directions for future studies.
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Affiliation(s)
- Irsalan Cockerill
- Department of Biomedical Engineering, University of North Texas, Denton, TX 76207, USA
- Department of Materials Science and Engineering, University of North Texas, Denton, TX 76207, USA
| | - Carmine Wang See
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY 11794, USA
| | - Marcus L. Young
- Department of Materials Science and Engineering, University of North Texas, Denton, TX 76207, USA
| | - Yadong Wang
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA
| | - Donghui Zhu
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY 11794, USA
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5
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Li P, Cai W, Li X, Wang K, Zhou L, You T, Wang R, Chen H, Zhao Y, Wang J, Huang N. Preparation of phospholipid-based polycarbonate urethanes for potential applications of blood-contacting implants. Regen Biomater 2020; 7:491-504. [PMID: 33149938 PMCID: PMC7597807 DOI: 10.1093/rb/rbaa037] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/08/2020] [Accepted: 08/17/2020] [Indexed: 12/16/2022] Open
Abstract
Polyurethanes are widely used in interventional devices due to the excellent physicochemical property. However, non-specific adhesion and severe inflammatory response of ordinary polyurethanes may lead to severe complications of intravenous devices. Herein, a novel phospholipid-based polycarbonate urethanes (PCUs) were developed via two-step solution polymerization by direct synthesis based on functional raw materials. Furthermore, PCUs were coated on biomedical metal sheets to construct biomimetic anti-fouling surface. The results of stress–strain curves exhibited excellent tensile properties of PCUs films. Differential scanning calorimetry results indicated that the microphase separation of such PCUs polymers could be well regulated by adjusting the formulation of chain extender, leading to different biological response. In vitro blood compatibility tests including bovine serum albumin adsorption, fibrinogen adsorption and denaturation, platelet adhesion and whole-blood experiment showed superior performance in inhibition non-specific adhesion of PCUs samples. Endothelial cells and smooth muscle cells culture tests further revealed a good anti-cell adhesion ability. Finally, animal experiments including ex vivo blood circulation and subcutaneous inflammation animal experiments indicated a strong ability in anti-thrombosis and histocompatibility. These results high light the strong anti-adhesion property of phospholipid-based PCUs films, which may be applied to the blood-contacting implants such as intravenous catheter or antithrombotic surface in the future.
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Affiliation(s)
- Peichuang Li
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Wanhao Cai
- Institute of Physical Chemistry, University of Freiburg, Albertstraße 21a, Freiburg 79104, Germany
| | - Xin Li
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Kebing Wang
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Lei Zhou
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Tianxue You
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Rui Wang
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Hang Chen
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Yuancong Zhao
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Jin Wang
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Nan Huang
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
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6
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Bao SB. Professor Cristobal G dos Remedios mentorship. Biophys Rev 2020; 12:757-759. [PMID: 32661901 DOI: 10.1007/s12551-020-00741-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 07/09/2020] [Indexed: 01/20/2023] Open
Abstract
As a non-English-speaking PhD student without previous scientific skills, I have been so lucky to be supervised and mentored by Professor Cristobal dos Remedios. In this commentary, I have commented my experience in dos Remedios laboratory. Finally, I would like to express my greatest appreciation to Professor dos Remedios for his kindness and mentorship over the last 31 years. His continuous support, which continues to the present, has been instrumental for the achievement of my current position.
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Affiliation(s)
- Shisan Bob Bao
- Discipline of Pathology, Charles Perkins Centre, School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, 2006, Australia.
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7
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Rahmati M, Silva EA, Reseland JE, A Heyward C, Haugen HJ. Biological responses to physicochemical properties of biomaterial surface. Chem Soc Rev 2020; 49:5178-5224. [PMID: 32642749 DOI: 10.1039/d0cs00103a] [Citation(s) in RCA: 137] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Biomedical scientists use chemistry-driven processes found in nature as an inspiration to design biomaterials as promising diagnostic tools, therapeutic solutions, or tissue substitutes. While substantial consideration is devoted to the design and validation of biomaterials, the nature of their interactions with the surrounding biological microenvironment is commonly neglected. This gap of knowledge could be owing to our poor understanding of biochemical signaling pathways, lack of reliable techniques for designing biomaterials with optimal physicochemical properties, and/or poor stability of biomaterial properties after implantation. The success of host responses to biomaterials, known as biocompatibility, depends on chemical principles as the root of both cell signaling pathways in the body and how the biomaterial surface is designed. Most of the current review papers have discussed chemical engineering and biological principles of designing biomaterials as separate topics, which has resulted in neglecting the main role of chemistry in this field. In this review, we discuss biocompatibility in the context of chemistry, what it is and how to assess it, while describing contributions from both biochemical cues and biomaterials as well as the means of harmonizing them. We address both biochemical signal-transduction pathways and engineering principles of designing a biomaterial with an emphasis on its surface physicochemistry. As we aim to show the role of chemistry in the crosstalk between the surface physicochemical properties and body responses, we concisely highlight the main biochemical signal-transduction pathways involved in the biocompatibility complex. Finally, we discuss the progress and challenges associated with the current strategies used for improving the chemical and physical interactions between cells and biomaterial surface.
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Affiliation(s)
- Maryam Rahmati
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0317 Oslo, Norway. h.j.haugen.odont.uio.no
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8
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Rusu LC, Ardelean LC, Jitariu AA, Miu CA, Streian CG. An Insight into the Structural Diversity and Clinical Applicability of Polyurethanes in Biomedicine. Polymers (Basel) 2020; 12:polym12051197. [PMID: 32456335 PMCID: PMC7285236 DOI: 10.3390/polym12051197] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/13/2020] [Accepted: 05/22/2020] [Indexed: 01/16/2023] Open
Abstract
Due to their mechanical properties, ranging from flexible to hard materials, polyurethanes (PUs) have been widely used in many industrial and biomedical applications. PUs’ characteristics, along with their biocompatibility, make them successful biomaterials for short and medium-duration applications. The morphology of PUs includes two structural phases: hard and soft segments. Their high mechanical resistance featuresare determined by the hard segment, while the elastomeric behaviour is established by the soft segment. The most important biomedical applications of PUs include antibacterial surfaces and catheters, blood oxygenators, dialysis devices, stents, cardiac valves, vascular prostheses, bioadhesives/surgical dressings/pressure-sensitive adhesives, drug delivery systems, tissue engineering scaffolds and electrospinning, nerve generation, pacemaker lead insulation and coatings for breast implants. The diversity of polyurethane properties, due to the ease of bulk and surface modification, plays a vital role in their applications.
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Affiliation(s)
- Laura-Cristina Rusu
- Department of Oral Pathology, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2 Eftimie Murgu sq, 300041 Timisoara, Romania;
| | - Lavinia Cosmina Ardelean
- Department of Technology of Materials and Devices in Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2 Eftimie Murgu sq, 300041 Timisoara, Romania
- Correspondence:
| | - Adriana-Andreea Jitariu
- Department of Microscopic Morphology/Histology and Angiogenesis Research Center Timisoara, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2 Eftimie Murgu sq, 300041 Timisoara, Romania;
| | - Catalin Adrian Miu
- 3rd Department of Orthopaedics-Traumatology, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2 Eftimie Murgu sq, 300041 Timisoara, Romania;
| | - Caius Glad Streian
- Department of Cardiac Surgery, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2 Eftimie Murgu sq, 300041 Timisoara, Romania;
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9
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Zan F, Wei Q, Fang L, Xian M, Ke Y, Wu G. Role of Stiffness versus Wettability in Regulating Cell Behaviors on Polymeric Surfaces. ACS Biomater Sci Eng 2020; 6:912-922. [PMID: 33464847 DOI: 10.1021/acsbiomaterials.9b01430] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Substrate wettability and stiffness, two factors impacting cell behaviors simultaneously, have been attracting much attention to elaborate which one dominates. In this study, hydrophilic poly(2-hydroxyethyl methacrylate) brushes were grafted onto the surfaces of poly(dimethylsiloxane) (PDMS) with elastic moduli of 3.66, 101.65 and 214.97 MPa and decreasing water contact angle from 120.4° to 38.5°. Cell behaviors of three cell lines including mBMSCs, ATDC-5, and C28/I2 were then investigated on the hydrophilic and hydrophobic PDMS with different stiffness, respectively. The proliferation of three cell lines was faster on the hydrophilic PDMS than the hydrophobic PDMS, but the stiffness of the hydrophilic or hydrophobic PDMS did not have a significant impact on cell proliferation. The increase of the stiffness enhanced cell migration, the cell spread and the gene expression proportion of extracellular matrix/intercellular adhesion molecules (integrin + FAK/NCAM + N-cadherin) for all three cell lines, but the increase of the wettability showed small enhancement in cell migration, cell spread and gene expression. Moreover, the cartilage-specific gene expression of SOX9 and COL2 downregulated for all three cell lines with the increasing stiffness. The interpretation of the effect of substrate wettability and stiffness on cell behaviors would function as very useful guideline to direct scaffold fabrication.
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Affiliation(s)
- Fei Zan
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
| | - Qiang Wei
- National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
| | - Liming Fang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,Guangdong Province Key Laboratory of Biomedical Engineering, Guangzhou 510641, China
| | - Mengyue Xian
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
| | - Yu Ke
- Department of Biomedical Engineering, Jinan University, Guangzhou 510632, China
| | - Gang Wu
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, China
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10
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Chen F, Qu M, Zhang F, Tan Z, Xia Q, Hambly BD, Bao S, Tao K. IL-36 s in the colorectal cancer: is interleukin 36 good or bad for the development of colorectal cancer? BMC Cancer 2020; 20:92. [PMID: 32013927 PMCID: PMC6998229 DOI: 10.1186/s12885-020-6587-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 01/29/2020] [Indexed: 01/16/2023] Open
Abstract
Background and aims Colorectal cancer (CRC) is a major killer. Host immunity is important in tumorigenesis. Direct comparison among IL-36α, IL-36β and IL-36γ in the prognosis of CRC is unclear. Methods CRC tissue arrays were generated from colorectostomy samples with TNM stage, invasion depth and the demography of these patients (n = 185). Using immunohistochemistry/histopathology, IL-36α, IL-36β and IL-36γ were determined, in comparison to non-cancer tissues. Results A significant association was observed between colonic IL-36α, IL-36β or IL-36γ and the presence of cancer (with all P < 0.0001). Using ROC curve analysis, specificity and sensitivity of IL-36α, IL-36β or IL-36γ were confirmed, with area under the curve (AUC) values of 0.68, 0.73 and 0.65, respectively. Significant differences in survival were observed between IL-36αhigh and IL-36αlow (P = 0.003) or IL-36γhigh and IL-36γlow (P = 0.03). Survival curves varied significantly when further stratification into sub-groups, on the basis of combined levels of expression of two isotypes of IL-36 was undertaken. A significant difference was observed when levels of IL-36α and IL-36β were combined (P = 0.01), or a combination of IL-36α plus IL-36γ (P = 0.002). The sub-groups with a combination of IL-36αhigh plus IL-36βhigh, or IL-36αhigh plus IL-36γlow exhibited the longest survival time among CRC patients. In contrast, the sub-groups of IL-36αlow plus IL-36βhigh or IL-36αlow plus IL-36γhigh had the shortest overall survival. Using the log-rank test, IL-36αhigh expression significantly improved survival in patients with an invasion depth of T4 (P < 0.0001), lymph node metastasis (P = 0.04), TNM III-IV (P = 0.03) or with a right-sided colon tumour (P = 0.02). Similarly, IL-36γlow expression was significantly associated with improved survival in patients with no lymph node metastasis (P = 0.008), TNM I-II (P = 0.03) or with a left-sided colon tumour (P = 0.05). Multivariate analysis demonstrated that among IL-36α, IL-36β and IL-36γ, only IL-36α (HR, 0.37; 95% CI, 0.16–0.87; P = 0.02) was an independent factor in survival, using Cox proportional hazards regression analysis. Conclusion IL-36α or IL-36γ are reliable biomarkers in predicting the prognosis of CRC during the later or early stages of the disease, respectively. Combining IL-36α plus IL-36γ appears to more accurately predict the postoperative prognosis of CRC patients. Our data may be useful in the management of CRC.
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Affiliation(s)
- Feier Chen
- Department of Pathology, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Discipline of Pathology, School of Medical Sciences and Bosch Institute, Charles Perkins Centre, The University of Sydney, Sydney, Australia
| | - Meng Qu
- Beihua University School of Medicine, Jilin, China
| | - Feng Zhang
- Department of Pathology, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Zhenyu Tan
- Department of Pathology, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Qinghua Xia
- Centre for Disease Control and Prevention of Changning District, Shanghai, China
| | - Brett D Hambly
- Department of Pathology, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Discipline of Pathology, School of Medical Sciences and Bosch Institute, Charles Perkins Centre, The University of Sydney, Sydney, Australia
| | - Shisan Bao
- Department of Pathology, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China. .,Discipline of Pathology, School of Medical Sciences and Bosch Institute, Charles Perkins Centre, The University of Sydney, Sydney, Australia.
| | - Kun Tao
- Department of Pathology, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
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