1
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Wang D, Hedayati M, Stuart JD, Madruga LYC, Popat KC, Snow CD, Kipper MJ. Ligand Presentation Inside Protein Crystal Nanopores: Tunable Interfacial Adhesion Noncovalently Modulates Cell Attachment. Mater Today Nano 2023; 24:100432. [PMID: 38370345 PMCID: PMC10871713 DOI: 10.1016/j.mtnano.2023.100432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Protein crystals with sufficiently large solvent pores can non-covalently adsorb polymers in the pores. In principle, if these polymers contain cell adhesion ligands, the polymer-laden crystals could present ligands to cells with tunable adhesion strength. Moreover, porous protein crystals can store an internal ligand reservoir, so that the surface can be replenished. In this study, we demonstrate that poly(ethylene glycol) terminated with a cyclic cell adhesion ligand peptide (PEG-RGD) can be loaded into porous protein crystals by diffusion. Through atomic force microscopy (AFM), force-distance correlations of the mechanical interactions between activated AFM tips and protein crystals were precisely measured. The activation of AFM tips allows the tips to interact with PEG-RGD that was pre-loaded in the protein crystal nanopores, mimicking how a cell might attach to and pull on the ligand through integrin receptors. The AFM experiments also simultaneously reveal the detailed morphology of the buffer-immersed nanoporous protein crystal surface. We also show that porous protein crystals (without and with loaded PEG-RGD) serve as suitable substrates for attachment and spreading of adipose-derived stem cells. This strategy can be used to design surfaces that non-covalently present multiple different ligands to cells with tunable adhesive strength for each ligand, and with an internal reservoir to replenish the precisely defined crystalline surface.
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Affiliation(s)
- Dafu Wang
- Department of Chemical and Biological Engineering, Colorado State University, 1370Campus Delivery, Fort Collins, CO 80523, U.S.A
- School of Advanced Materials Discovery, Colorado State University, 1617 Campus Delivery, Fort Collins, CO 80523, U.S.A
| | - Mohammadhasan Hedayati
- Department of Chemical and Biological Engineering, Colorado State University, 1370Campus Delivery, Fort Collins, CO 80523, U.S.A
| | - Julius D Stuart
- Department of Chemistry, Colorado State University, 1872 Campus Delivery, FortCollins, CO 80523, U.S.A
| | - Liszt Y C Madruga
- Department of Chemical and Biological Engineering, Colorado State University, 1370Campus Delivery, Fort Collins, CO 80523, U.S.A
| | - Ketul C Popat
- Department of Chemical and Biological Engineering, Colorado State University, 1370Campus Delivery, Fort Collins, CO 80523, U.S.A
| | - Christopher D Snow
- Department of Chemical and Biological Engineering, Colorado State University, 1370Campus Delivery, Fort Collins, CO 80523, U.S.A
- School of Advanced Materials Discovery, Colorado State University, 1617 Campus Delivery, Fort Collins, CO 80523, U.S.A
- Department of Chemistry, Colorado State University, 1872 Campus Delivery, FortCollins, CO 80523, U.S.A
- School of Biomedical Engineering, Colorado State University, 1301 Campus Delivery, Fort Collins, CO 80523, U.S.A
| | - Matt J Kipper
- Department of Chemical and Biological Engineering, Colorado State University, 1370Campus Delivery, Fort Collins, CO 80523, U.S.A
- School of Advanced Materials Discovery, Colorado State University, 1617 Campus Delivery, Fort Collins, CO 80523, U.S.A
- School of Biomedical Engineering, Colorado State University, 1301 Campus Delivery, Fort Collins, CO 80523, U.S.A
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Jia F, Yang L, Sun L, Yu D, Song Y, Wang Y, Kipper MJ, Tang J, Huang L. Efficient separation of dyes using two-dimensional heterogeneous composite membranes. Water Res 2023; 247:120693. [PMID: 37976627 DOI: 10.1016/j.watres.2023.120693] [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: 06/16/2023] [Revised: 09/28/2023] [Accepted: 10/02/2023] [Indexed: 11/19/2023]
Abstract
Two-dimensional materials are widely used in membrane separation, but the loose distribution and severe expansion between graphene oxide (GO) nanosheets limit its application. Here, we introduce a two-dimensional MOF material into the GO membrane to enhance its water permeance and separation performance. The MOF/GO composite membrane was prepared by vacuum filtration. The MOF and GO nanosheets were tightly stacked through the π-π effect, and the shortened transmission path and enhanced pore structure greatly improved the water permeance of the composite membrane. The MOF/GO membrane exhibited a high water permeance of 56.94 L m-2 h-1 bar-1. The rejection rates of methylene blue and was as methyl orange dyes were as high as 99.79% and 99.11%, respectively. At increased dye concentration, the rejection rate of methylene blue was still maintained greater than 99%. Dye rejection after 18 h of continuous operation remains above 90%. This work provides new ideas for improving membrane separation materials. The combination of two-dimensional heterogeneous materials can result in synergistic advantages for the development of composite membranes with high water permeance and high rejection rate.
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Affiliation(s)
- Fengchun Jia
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science and Technology Cooperation, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Liu Yang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science and Technology Cooperation, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Liyue Sun
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science and Technology Cooperation, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Dehao Yu
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science and Technology Cooperation, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Yu Song
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science and Technology Cooperation, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Yanxin Wang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science and Technology Cooperation, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China
| | - Matt J Kipper
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Jianguo Tang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science and Technology Cooperation, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China.
| | - Linjun Huang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science and Technology Cooperation, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China.
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3
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Baghersad S, Madruga LYC, Martins AF, Popat KC, Kipper MJ. Expanding the Scope of an Amphoteric Condensed Tannin, Tanfloc, for Antibacterial Coatings. J Funct Biomater 2023; 14:554. [PMID: 37998123 PMCID: PMC10672460 DOI: 10.3390/jfb14110554] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/12/2023] [Accepted: 11/13/2023] [Indexed: 11/25/2023] Open
Abstract
Bacterial infections are a common mode of failure for medical implants. This study aims to develop antibacterial polyelectrolyte multilayer (PEM) coatings that contain a plant-derived condensed tannin polymer (Tanfloc, TAN) with inherent antimicrobial activity. Tanfloc is amphoteric, and herein we show that it can be used as either a polyanion or a polycation in PEMs, thereby expanding the possibility of its use in PEM coatings. PEMs are ordinarily formed using a polycation and a polyanion, in which the functional (ionic) groups of the two polymers are complexed to each other. However, using the amphoteric polymer Tanfloc with weakly basic amine and weakly acidic catechol and pyrogallol groups enables PEM formation using only one or the other of its functional groups, leaving the other functional group available to impart antibacterial activity. This work demonstrates Tanfloc-containing PEMs using multiple counter-polyelectrolytes including three polyanionic glycosaminoglycans of varying charge density, and the polycations N,N,N-trimethyl chitosan and polyethyleneimine. The layer-by-layer (LbL) assembly of PEMs was monitored using in situ Fourier-transform surface plasmon resonance (FT-SPR), confirming a stable LbL assembly. X-ray photoelectron spectroscopy (XPS) was used to evaluate surface chemistry, and atomic force microscopy (AFM) was used to determine the surface roughness. The LDH release levels from cells cultured on the Tanfloc-containing PEMs were not statistically different from those on the negative control (p > 0.05), confirming their non-cytotoxicity, while exhibiting remarkable antiadhesive and bactericidal properties against Pseudomonas aeruginosa (P. aeruginosa) and Staphylococcus aureus (S. aureus), respectively. The antibacterial effects were attributed to electrostatic interactions and Tanfloc's polyphenolic nature. This work underscores the potential of Tanfloc as a versatile biomaterial for combating infections on surfaces.
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Affiliation(s)
- Somayeh Baghersad
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80526, USA;
| | - Liszt Y. C. Madruga
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80526, USA; (L.Y.C.M.); (A.F.M.)
| | - Alessandro F. Martins
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80526, USA; (L.Y.C.M.); (A.F.M.)
- Department of Chemistry & Biotechnology, University of Wisconsin-River Falls, River Falls, WI 54022, USA
| | - Ketul C. Popat
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80526, USA;
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80526, USA
- School of Materials Science and Engineering, Colorado State University, Fort Collins, CO 80526, USA
| | - Matt J. Kipper
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80526, USA;
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80526, USA; (L.Y.C.M.); (A.F.M.)
- School of Materials Science and Engineering, Colorado State University, Fort Collins, CO 80526, USA
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4
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Baghersad S, Sathish Kumar A, Kipper MJ, Popat K, Wang Z. Recent Advances in Tissue-Engineered Cardiac Scaffolds-The Progress and Gap in Mimicking Native Myocardium Mechanical Behaviors. J Funct Biomater 2023; 14:jfb14050269. [PMID: 37233379 DOI: 10.3390/jfb14050269] [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: 04/17/2023] [Revised: 05/04/2023] [Accepted: 05/06/2023] [Indexed: 05/27/2023] Open
Abstract
Heart failure is the leading cause of death in the US and worldwide. Despite modern therapy, challenges remain to rescue the damaged organ that contains cells with a very low proliferation rate after birth. Developments in tissue engineering and regeneration offer new tools to investigate the pathology of cardiac diseases and develop therapeutic strategies for heart failure patients. Tissue -engineered cardiac scaffolds should be designed to provide structural, biochemical, mechanical, and/or electrical properties similar to native myocardium tissues. This review primarily focuses on the mechanical behaviors of cardiac scaffolds and their significance in cardiac research. Specifically, we summarize the recent development of synthetic (including hydrogel) scaffolds that have achieved various types of mechanical behavior-nonlinear elasticity, anisotropy, and viscoelasticity-all of which are characteristic of the myocardium and heart valves. For each type of mechanical behavior, we review the current fabrication methods to enable the biomimetic mechanical behavior, the advantages and limitations of the existing scaffolds, and how the mechanical environment affects biological responses and/or treatment outcomes for cardiac diseases. Lastly, we discuss the remaining challenges in this field and suggestions for future directions to improve our understanding of mechanical control over cardiac function and inspire better regenerative therapies for myocardial restoration.
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Affiliation(s)
- Somayeh Baghersad
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Abinaya Sathish Kumar
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Matt J Kipper
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA
- School of Materials Science and Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Ketul Popat
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
- School of Materials Science and Engineering, Colorado State University, Fort Collins, CO 80523, USA
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Zhijie Wang
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA
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5
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Silva OA, Pellá MG, Sabino RM, Popat KC, Kipper MJ, Rubira AF, Follmann HDM, Silva R, Martins AF. Carboxymethylcellulose hydrogels crosslinked with keratin nanoparticles for efficient prednisolone delivery. Int J Biol Macromol 2023; 241:124497. [PMID: 37080405 DOI: 10.1016/j.ijbiomac.2023.124497] [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: 02/07/2023] [Revised: 04/04/2023] [Accepted: 04/13/2023] [Indexed: 04/22/2023]
Abstract
Carboxymethylcellulose (CMC) and keratin nanoparticle (KNP) hydrogels were obtained, characterized, and applied as drug delivery systems (DDSs) for the first time. Lyophilized CMC/KNP mixtures containing 10, 25, and 50 wt% of KNPs were kept at 170 °C for 90 min to crosslink CMC chains through a solid-state reaction with the KNPs. The hydrogels were characterized by infrared spectroscopy, thermal analyses, X-ray diffraction, mechanical measurements, and scanning electron microscopy. The infrared spectra indicated the formation of ester and amide linkages between crosslinked CMC and KNPs. The elastic modulus of the hydrogel containing 10 wt% KNPs was 2-fold higher than that of the hydrogel containing 50 wt% KNPs. The mechanical properties influenced the hydrogel stability and water uptake. The anti-inflammatory prednisolone (PRED) drug was incorporated into the hydrogels, and the release mechanism was investigated. The hydrogels supported PRED release by drug desorption for approximately 360 h. A sustained release mechanism was achieved. The CMC/KNP and CMC/KNP/PRED hydrogels were cytocompatible toward mammalian cells. The CMC/KNP/PRED set imparted the highest cell viability after 7 days of incubation. This study showed a straightforward procedure to create DDSs (chemically crosslinked) based on polysaccharides and proteins for efficient PRED delivery.
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Affiliation(s)
- Otavio A Silva
- Group of Polymers and Composite Materials, Department of Chemistry, State University of Maringá (UEM), Maringá, PR, Brazil
| | - Michelly G Pellá
- Group of Polymers and Composite Materials, Department of Chemistry, State University of Maringá (UEM), Maringá, PR, Brazil
| | - Roberta M Sabino
- School of Advanced Materials Discovery, Colorado State University (CSU), Fort Collins, CO, USA; Institute for Medical Engineering and Science, Massachusetts Institute of Technology (MIT), Cambridge, MA, USA
| | - Ketul C Popat
- School of Advanced Materials Discovery, Colorado State University (CSU), Fort Collins, CO, USA; Department of Mechanical Engineering, Colorado State University (CSU), Fort Collins, CO, USA
| | - Matt J Kipper
- School of Advanced Materials Discovery, Colorado State University (CSU), Fort Collins, CO, USA; Department of Chemical and Biological Engineering, Colorado State University (CSU), Fort Collins, CO, USA
| | - Adley F Rubira
- Group of Polymers and Composite Materials, Department of Chemistry, State University of Maringá (UEM), Maringá, PR, Brazil
| | - Heveline D M Follmann
- Group of Polymers and Composite Materials, Department of Chemistry, State University of Maringá (UEM), Maringá, PR, Brazil
| | - Rafael Silva
- Group of Polymers and Composite Materials, Department of Chemistry, State University of Maringá (UEM), Maringá, PR, Brazil
| | - Alessandro F Martins
- Group of Polymers and Composite Materials, Department of Chemistry, State University of Maringá (UEM), Maringá, PR, Brazil; Laboratory of Materials, Macromolecules, and Composites, Federal University of Technology-Paraná (UTFPR), Apucarana, PR, Brazil; Department of Chemical and Biological Engineering, Colorado State University (CSU), Fort Collins, CO, USA.
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6
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Liu JS, Madruga LYC, Yuan Y, Kipper MJ, Khetani SR. Decellularized Liver Nanofibers Enhance and Stabilize the Long-term Functions of Primary Human Hepatocytes In Vitro. Adv Healthc Mater 2023:e2202302. [PMID: 36947401 DOI: 10.1002/adhm.202202302] [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: 09/08/2022] [Revised: 03/07/2023] [Indexed: 03/23/2023]
Abstract
Owing to significant differences across species in liver functions, in vitro human liver models are used for screening the metabolism and toxicity of compounds, modeling diseases, and cell-based therapies. However, the extracellular matrix (ECM) scaffold used for such models often does not mimic either the complex composition or the nanofibrous topography of native liver ECM. Thus, here we develop novel methods to electrospin decellularized porcine liver ECM (PLECM) and collagen I into nano- and microfibers (∼200-1000 nm) without synthetic polymer blends. Primary human hepatocytes (PHHs) on nanofibers in monoculture or in co-culture with non-parenchymal cells (3T3-J2 embryonic fibroblasts or primary human liver endothelial cells) display higher albumin secretion, urea synthesis, and cytochrome-P450 1A2, 2A6, 2C9, and 3A4 enzyme activities than on conventionally adsorbed ECM controls. PHH functions are highest on the collagen/PLECM blended nanofibers (up to 34-fold higher CYP3A4 activity relative to adsorbed ECM) for nearly 7 weeks in the presence of the fibroblasts. In conclusion, we show for the first time that ECM composition and topography synergize to enhance and stabilize PHH functions for several weeks in vitro. Our nanofiber platform could prove useful for the above applications and to elucidate cell-ECM interactions in the human liver. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Jennifer S Liu
- Department of Biomedical Engineering, University of Illinois at Chicago, Chicago, IL, USA
| | - Liszt Y C Madruga
- Department of Chemical & Biological Engineering, Colorado State University, Fort Collins, CO, USA
| | - Yang Yuan
- Department of Biomedical Engineering, University of Illinois at Chicago, Chicago, IL, USA
| | - Matt J Kipper
- Department of Chemical & Biological Engineering, Colorado State University, Fort Collins, CO, USA
| | - Salman R Khetani
- Department of Biomedical Engineering, University of Illinois at Chicago, Chicago, IL, USA
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7
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Vahabi H, Vallabhuneni S, Hedayati M, Wang W, Krapf D, Kipper MJ, Miljkovic N, Kota AK. Designing Non-Textured, All-Solid, Slippery Hydrophilic Surfaces. Matter 2022; 5:4502-4512. [PMID: 36569514 PMCID: PMC9784614 DOI: 10.1016/j.matt.2022.09.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Slippery surfaces are sought after due to their wide range of applications in self-cleaning, drag reduction, fouling-resistance, enhanced condensation, biomedical implants etc. Recently, non-textured, all-solid, slippery surfaces have gained significant attention because of their advantages over super-repellent surfaces and lubricant-infused surfaces. Currently, almost all non-textured, all-solid, slippery surfaces are hydrophobic. In this work, we elucidate the systematic design of non-textured, all-solid, slippery hydrophilic (SLIC) surfaces by covalently grafting polyethylene glycol (PEG) brushes to smooth substrates. Furthermore, we postulate a plateau in slipperiness above a critical grafting density, which occurs when the tethered brush size is equal to the inter-tether distance. Our SLIC surfaces demonstrate exceptional performance in condensation and fouling-resistance compared to non-slippery hydrophilic surfaces and slippery hydrophobic surfaces. Based on these results, SLIC surfaces constitute an emerging class of surfaces with the potential to benefit multiple technological landscapes ranging from thermofluidics to biofluidics.
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Affiliation(s)
- Hamed Vahabi
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA
- These authors contributed equally
| | - Sravanthi Vallabhuneni
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, USA
- These authors contributed equally
| | - Mohammadhasan Hedayati
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Wei Wang
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, USA
- Department of Mechanical, Aerospace and Biomedical Engineering, University of Tennessee, Knoxville, TN 37996, USA
| | - Diego Krapf
- Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Matt J. Kipper
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Nenad Miljkovic
- Department of Mechanical Science and Engineering, Department of Electrical and Computer Engineering, Materials Research Laboratory, University of Illinois at Urbana – Champaign, Urbana, IL 61801, USA
- International Institute of Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukoka 819-0395, Japan
| | - Arun K. Kota
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, USA
- Lead contact
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Niu S, Yang W, Wei H, Danilov M, Rusetskyi I, Popat KC, Wang Y, Kipper MJ, Belfiore LA, Tang J. Heterostructures of Cut Carbon Nanotube-Filled Array of TiO 2 Nanotubes for New Module of Photovoltaic Devices. Nanomaterials (Basel) 2022; 12:3604. [PMID: 36296799 PMCID: PMC9608834 DOI: 10.3390/nano12203604] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/24/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
In this work, a new photovoltaic device was prepared. The device uses titanium (Ti) foil/TiO2 nanotubes as the photoanode and multi-walled carbon nanotubes (MWCNTs) as a photosensitizer. Titanium dioxide nanotube arrays (TiO2-NTs) were prepared by one-step anodic oxidation. Cut-MWCNTs with a length of less than 100 nm were obtained by the mixed-acid oxidation of MWCNTs. The two materials were combined to form a TiO2-NTs@cut-MWCNT heterostructure by electrophoresis. TiO2-NTs@cut-MWCNTs were characterized by field-emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD), which showed that the two materials were effectively combined. We fabricated the heterostructure into a photovoltaic device, showing an enhanced photocurrent response and an efficiency of 0.0138%, and explained this phenomenon by performing UV-vis absorption spectroscopy and electrochemical tests. It is hoped that this work can provide a reference value for the application of carbon nanotubes in photovoltaic devices.
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Affiliation(s)
- Siqi Niu
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Wenbin Yang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Heng Wei
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Michail Danilov
- V.I. Vernadskii Institute of General and Inorganic Chemistry of the Ukrainian NAS, 32/34 Palladin avenue, 03142 Kyiv, Ukraine
| | - Ihor Rusetskyi
- V.I. Vernadskii Institute of General and Inorganic Chemistry of the Ukrainian NAS, 32/34 Palladin avenue, 03142 Kyiv, Ukraine
| | - Ketul C. Popat
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Yao Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Matt J. Kipper
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Laurence A. Belfiore
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Jianguo Tang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
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9
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Wang Q, Li L, Tang Q, Liu J, Wang Y, Wang J, Kipper MJ, Xie H, Belfiore LA, Tang J. Ligand-Tuned Multi-Color Luminescence of Single Aluminum (III) Ion Atomic Centers and Their Selective Sensitivity to Different Metal Ions. Materials 2022; 15:ma15155199. [PMID: 35955134 PMCID: PMC9370060 DOI: 10.3390/ma15155199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 07/15/2022] [Accepted: 07/24/2022] [Indexed: 02/05/2023]
Abstract
Achieving multi-color luminescence with a single atomic center in transition metal complexes is a challenge. In this work, luminescent materials with tunable emission properties were realized by complexation between aluminum (III) ions with the ligands 3-hydroxyflavone (3-HF) and 5,7-dichloro-8-hydroxyquinoline (DCHQ). Aluminum (III) complexes with a single ligand emitted blue from 3-HF and green from DCHQ. High quantum yields (QYs) of 29.42% and 37.00% were also obtained, respectively. DFT calculations revealed details of the photophysical properties of the complexes. Correspondingly, cyan light emission was obtained if these two complexes were mixed together, from which the emission wavelength was located at 470 nm and the QY was 20.52%, under 290 nm excitation. More importantly, the cyan light emitted by the mixtures had selective sensitivity to different metal ions, resulting in either quenching the fluorescence (in the case of Fe3+) or enhancing the fluorescence (in the case of In3+). The fluorescence enhancement effect of In3+ on metal complexes has not been previously reported, neither for transition metal nor lanthanide ions. The linear quenching behavior of Fe3+ functions in the 50–700 μM concentration range, and the linear enhancement behavior of In3+ is demonstrated in the 300–800 mM concentration range.
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Affiliation(s)
- Qian Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China; (Q.W.); (L.L.); (Q.T.); (J.L.); (Y.W.); (J.W.); (L.A.B.)
| | - Longlong Li
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China; (Q.W.); (L.L.); (Q.T.); (J.L.); (Y.W.); (J.W.); (L.A.B.)
| | - Qinglin Tang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China; (Q.W.); (L.L.); (Q.T.); (J.L.); (Y.W.); (J.W.); (L.A.B.)
| | - Jin Liu
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China; (Q.W.); (L.L.); (Q.T.); (J.L.); (Y.W.); (J.W.); (L.A.B.)
| | - Yao Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China; (Q.W.); (L.L.); (Q.T.); (J.L.); (Y.W.); (J.W.); (L.A.B.)
| | - Jiuxing Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China; (Q.W.); (L.L.); (Q.T.); (J.L.); (Y.W.); (J.W.); (L.A.B.)
| | - Matt J. Kipper
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA;
| | - Haijiao Xie
- Hangzhou Yanqu Information Technology Co., Ltd., Y2, 2nd Floor, Building 2, Xixi Legu Creative Pioneering Park, No. 712 Wen’er West Road, Xihu District, Hangzhou 310003, China;
| | - Laurence A. Belfiore
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China; (Q.W.); (L.L.); (Q.T.); (J.L.); (Y.W.); (J.W.); (L.A.B.)
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA;
| | - Jianguo Tang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China; (Q.W.); (L.L.); (Q.T.); (J.L.); (Y.W.); (J.W.); (L.A.B.)
- Correspondence: ; Tel.: +86-137-9180-1659
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10
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Facchi DP, Facchi SP, Souza PR, Bonafé EG, Popat KC, Kipper MJ, Martins AF. Composite filter with antimicrobial and anti-adhesive properties based on electrospun poly(butylene adipate-co-terephthalate)/poly(acid lactic)/Tween 20 fibers associated with silver nanoparticles. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Bonifácio E, Facchi DP, Souza PR, Monteiro JP, Popat KC, Kipper MJ, Martins AF. A tannin-polymer adsorbent created from the freezing-thawing method for removal of metal-complex acid black 172 and methylene blue from aqueous solutions. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Madruga LYC, Kipper MJ. Expanding the Repertoire of Electrospinning: New and Emerging Biopolymers, Techniques, and Applications. Adv Healthc Mater 2022; 11:e2101979. [PMID: 34788898 DOI: 10.1002/adhm.202101979] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [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: 09/16/2021] [Revised: 11/09/2021] [Indexed: 12/20/2022]
Abstract
Electrospinning has emerged as a versatile and accessible technology for fabricating polymer fibers, particularly for biological applications. Natural polymers or biopolymers (including synthetically derivatized natural polymers) represent a promising alternative to synthetic polymers, as materials for electrospinning. Many biopolymers are obtained from abundant renewable sources, are biodegradable, and possess inherent biological functions. This review surveys recent literature reporting new fibers produced from emerging biopolymers, highlighting recent developments in the use of sulfated polymers (including carrageenans and glycosaminoglycans), tannin derivatives (condensed and hydrolyzed tannins, tannic acid), modified collagen, and extracellular matrix extracts. The proposed advantages of these biopolymer-based fibers, focusing on their biomedical applications, are also discussed to highlight the use of new and emerging biopolymers (or new modifications to well-established ones) to enhance or achieve new properties for electrospun fiber materials.
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Affiliation(s)
- Liszt Y. C. Madruga
- Department of Chemical and Biological Engineering Colorado State University Fort Collins CO 80526 USA
| | - Matt J. Kipper
- Department of Chemical and Biological Engineering Colorado State University Fort Collins CO 80526 USA
- School of Advanced Materials Discovery Colorado State University Fort Collins CO 80526 USA
- School of Biomedical Engineering Colorado State University Fort Collins CO 80526 USA
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13
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Silva OA, Pellá MG, Popat KC, Kipper MJ, Rubira AF, Martins AF, Follmann HD, Silva R. Rod-shaped keratin nanoparticles extracted from human hair by acid hydrolysis as photothermally triggered berberine delivery system. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2021.11.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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14
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Madruga LYC, Popat KC, Balaban RC, Kipper MJ. Enhanced blood coagulation and antibacterial activities of carboxymethyl-kappa-carrageenan-containing nanofibers. Carbohydr Polym 2021; 273:118541. [PMID: 34560953 DOI: 10.1016/j.carbpol.2021.118541] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 05/21/2021] [Revised: 08/03/2021] [Accepted: 08/05/2021] [Indexed: 01/10/2023]
Abstract
Ideal wound dressings should be biocompatible, exhibit high antibacterial activity, and promote blood coagulation. To impart these imperative functions, carboxymethyl-kappa-carrageenan was incorporated into poly(vinyl alcohol) nanofibers (PVA-CMKC). The antibacterial activity of the nanofibers was evaluated. Adsorption of two important blood proteins, fibrinogen and albumin, was also assessed. The adhesion and activation of platelets, and the clotting of whole blood were evaluated to characterize the ability of the nanofibers to promote hemostasis. Adhesion and morphology of both Staphylococcus aureus and Pseudomonas aeruginosa were evaluated using fluorescence microscopy and scanning electron microscopy. CMKC-containing nanofibers demonstrated significant increases in platelet adhesion and activation, percentage of coagulation in whole blood clotting test and fibrinogen adsorption, compared to PVA nanofibers, showing blood coagulation activity. Incorporating CMKC also reduces adhesion and viability of S. aureus and P. aeruginosa bacteria after 24 h of incubation. PVA-CMKC nanofibers show potential application as dressings for wound healing applications.
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Affiliation(s)
- Liszt Y C Madruga
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO, United States; Institute of Chemistry, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
| | - Ketul C Popat
- School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO, United States; Department of Mechanical Engineering, Colorado State University, Fort Collins, CO, United States; School of Biomedical Engineering, Colorado State University, Fort Collins, CO, United States
| | - Rosangela C Balaban
- Institute of Chemistry, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
| | - Matt J Kipper
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO, United States; School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO, United States; School of Biomedical Engineering, Colorado State University, Fort Collins, CO, United States.
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15
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Vlcek JR, Reynolds MM, Kipper MJ. Enzymatic Degradation of Glycosaminoglycans and Proteoglycan-Mimetic Materials in Solution and on Polyelectrolyte Multilayer Surfaces. Biomacromolecules 2021; 22:3913-3925. [PMID: 34347454 DOI: 10.1021/acs.biomac.1c00720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Proteoglycans (PGs) play many important roles in biology, contributing to the mechanical properties of tissues, helping to organize extracellular matrix components, and participating in signaling mechanisms related to mechanotransduction, cell differentiation, immune responses, and wound healing. Our lab has designed two different types of PG mimics: polyelectrolyte complex nanoparticles (PCNs) and PG-mimetic graft copolymers (GCs), both of which are prepared using naturally occurring glycosaminoglycans. This work evaluates the enzymatic stability of these PG mimics using hyaluronidases (I-S, IV-S, and II), chondroitinase ABC, and lysozyme, for PG mimics suspended in solution and adsorbed onto surfaces. Hyaluronan (HA)- and chondroitin sulfate (CS)-containing PG mimics are degraded by the hyaluronidases. PCNs prepared with CS and GCs prepared with heparin are the only CS- and HA-containing PG mimics protected from chondroitinase ABC. None of the materials are measurably degraded by lysozyme. Adsorption to polyelectrolyte multilayer surfaces protects PG mimics from degradation, compared to when PG mimics are combined with enzymes in solution; all surfaces are still intact after 21 days of enzyme exposure. This work reveals how the stability of PG mimics is controlled by both the composition and macromolecular assembly of the PG mimic and also by the size and specificity of the enzyme. Understanding and tuning these degradation susceptibilities are essential for advancing their applications in cardiovascular materials, orthopedic materials, and growth factor delivery applications.
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Affiliation(s)
- Jessi R Vlcek
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Melissa M Reynolds
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado 80523, United States.,School of Advanced Materials Discovery, Colorado State University, Fort Collins, Colorado 80523, United States.,School of Advanced Materials Discovery, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Matt J Kipper
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado 80523, United States.,School of Advanced Materials Discovery, Colorado State University, Fort Collins, Colorado 80523, United States.,Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
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16
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Wang D, Stuart JD, Jones AA, Snow CD, Kipper MJ. Measuring interactions of DNA with nanoporous protein crystals by atomic force microscopy. Nanoscale 2021; 13:10871-10881. [PMID: 34124715 DOI: 10.1039/d1nr01703a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Crosslinked porous protein crystals are a new biomaterial that can be engineered to encapsulate, stabilize, and organize guest molecules, nanoparticles, and biological moieties. In this study, for the first time, the combined interactions of DNA strands with porous protein crystals are quantitatively measured by high-resolution atomic force microscopy (AFM) and chemical force microscopy. The surface structure of protein crystals with unusually large pores was observed in liquid via high-resolution AFM. Force-distance (F-D) curves were also obtained using AFM tips modified to present or capture DNA. The modification of AFM tips allowed the tips to covalently bind DNA that was pre-loaded in the protein crystal nanopores. The modified tips enabled the interactions of DNA molecules with protein crystals to be quantitatively studied while revealing the morphology of the buffer-immersed protein crystal surface in detail, thereby preserving the structure and properties of protein crystals that could be disrupted or destroyed by drying. The hexagonal space group was manifest at the crystal surface, as were the strong interactions between DNA and the porous protein crystals in question. In sum, this study furthered our understanding of how a new protein-based biomaterial can be used to bind guest DNA assemblies.
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Affiliation(s)
- Dafu Wang
- School of Advanced Materials Discovery, Colorado State University, 1617 Campus Delivery, Fort Collins, CO 80523, USA and Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO 80523, USA.
| | - Julius D Stuart
- Department of Chemistry, Colorado State University, 1872 Campus Delivery, Fort Collins, CO 80523, USA
| | - Alec A Jones
- School of Biomedical Engineering, Colorado State University, 1301 Campus Delivery, Fort Collins, CO 80523, USA
| | - Christopher D Snow
- School of Advanced Materials Discovery, Colorado State University, 1617 Campus Delivery, Fort Collins, CO 80523, USA and Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO 80523, USA. and Department of Chemistry, Colorado State University, 1872 Campus Delivery, Fort Collins, CO 80523, USA and School of Biomedical Engineering, Colorado State University, 1301 Campus Delivery, Fort Collins, CO 80523, USA
| | - Matt J Kipper
- School of Advanced Materials Discovery, Colorado State University, 1617 Campus Delivery, Fort Collins, CO 80523, USA and Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO 80523, USA. and School of Biomedical Engineering, Colorado State University, 1301 Campus Delivery, Fort Collins, CO 80523, USA
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17
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Wigmosta T, Popat K, Kipper MJ. Gentamicin-Releasing Titania Nanotube Surfaces Inhibit Bacteria and Support Adipose-Derived Stem Cell Growth in Cocultures. ACS Appl Bio Mater 2021; 4:4936-4945. [PMID: 35007042 DOI: 10.1021/acsabm.1c00225] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Infection is the second leading cause of failure of orthopedic implants following incomplete osseointegration. Materials that increase the antimicrobial properties of surfaces while maintaining the ability for bone cells to attach and proliferate could reduce the failure rates of orthopedic implants. In this study, titania nanotubes (Nts) were modified with chitosan/heparin polyelectrolyte multilayers (PEMs) for gentamicin delivery. The antimicrobial activity of the surfaces was tested by coculturing bacteria with mammalian cells. Over 60% of gentamicin remained on the surface after an initial burst release on the first day. Antimicrobial activity of these surfaces was determined by exposure to Gram-positive Staphylococcus aureus (S. aureus) and Gram-negative Escherichia coli (E. coli) for up to 24 h. Gentamicin surfaces had less live E. coli and S. aureus by 6 h and less E. coli by 24 h compared to Nt surfaces. S. aureus and human adipose-derived stem cells (hADSCs) were cocultured on surfaces for up to 7 days to characterize the so-called "race to the surface" between bacteria and mammalian cells, which is hypothesized to ultimately determine the outcome of orthopedic implants. By day 7, there was no significant difference in bacteria between surfaces with gentamicin adsorbed on the surface and surfaces with gentamicin in solution. However, gentamicin delivered in solution is toxic to hADSCs. Alternatively, gentamicin presented from PEMs enhances the antimicrobial properties of the surfaces without inhibiting hADSC attachment and cell growth. Delivering gentamicin from the surfaces is therefore superior to delivering gentamicin in solution and represents a strategy that could improve the antimicrobial activity of orthopedic implants and reduce risk of failure due to infection, without reducing mammalian cell attachment.
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Affiliation(s)
- Tara Wigmosta
- School of Biomedical Engineering, Colorado State University, Fort Collins 80523, Colorado, United States
| | - Ketul Popat
- School of Biomedical Engineering, Colorado State University, Fort Collins 80523, Colorado, United States.,School of Advanced Materials Discovery, Colorado State University, Fort Collins 80523, Colorado, United States.,Department of Mechanical Engineering, Colorado State University, Fort Collins 80523, Colorado, United States
| | - Matt J Kipper
- School of Biomedical Engineering, Colorado State University, Fort Collins 80523, Colorado, United States.,School of Advanced Materials Discovery, Colorado State University, Fort Collins 80523, Colorado, United States.,Department of Chemical and Biological Engineering, Colorado State University, Fort Collins 80523, Colorado, United States
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18
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Aleem AR, Ding W, Liu J, Li T, Guo Y, Wang Q, Wang Y, Wang Y, Rehman FUL, Kipper MJ, Belfiore LA, Tang J. Visible-light excitable Eu 3+-induced hyaluronic acid-chitosan aggregates with heterocyclic ligands for sensitive and fast recognition of hazardous ions. Int J Biol Macromol 2021; 184:188-199. [PMID: 34119544 DOI: 10.1016/j.ijbiomac.2021.06.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 06/04/2021] [Accepted: 06/08/2021] [Indexed: 01/16/2023]
Abstract
Water-soluble luminescent lanthanide complexes that can be excited with visible light could enable rapid detection of toxic anions and cations in biological systems. Eu3+-induced hyaluronic acid-chitosan aggregates (EIHCA) can improve the stability, biocompatibility, efficiency, and light absorption of luminescent Eu3+ complexes. Visible-range excitation may avoid phototoxicity associated with overexposure to UV light in biological and ecological applications. In this work, we synthesized and characterized series of EIHCA complexes having three N-donor heterocyclic ligands: 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (Dphen), 2,2': 6',2″-terpyridine (Tpy) and 1,10-phenanthroline monohydrate (Phen). These complexes possessed bright red fluorescence with a visible range excitation maximum. The photophysical properties of one formulation (we denote as EDL6) include fast quenching response (20 s) of the fluorescence, multi-selectivity, low limit of detection, and high quenching (Ksv) values, enabling selective, rapid and sensitive recognition of Cr2O72- and Fe3+ in aqueous solution. Furthermore, EDL6 exhibits cytocompatibility with mammalian cells that make these complexes promising biocompatible candidate as a safe replacement of organic fluorophores for fluorescence sensing applications. Thus, these new EIHCA complexes were successfully employed for the selective detection of hazardous materials in biological and aqueous environment samples.
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Affiliation(s)
- Abdur Raheem Aleem
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Wei Ding
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Jin Liu
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Taisen Li
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Yaowei Guo
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Qian Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Yao Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Yanxin Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Faisal U L Rehman
- Department of Medical Oncology, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao 266003, China
| | - Matt J Kipper
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Laurence A Belfiore
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China; Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Jianguo Tang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
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19
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Souza PR, de Oliveira AC, Vilsinski BH, Kipper MJ, Martins AF. Polysaccharide-Based Materials Created by Physical Processes: From Preparation to Biomedical Applications. Pharmaceutics 2021; 13:621. [PMID: 33925380 PMCID: PMC8146878 DOI: 10.3390/pharmaceutics13050621] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/22/2021] [Accepted: 04/23/2021] [Indexed: 02/07/2023] Open
Abstract
Polysaccharide-based materials created by physical processes have received considerable attention for biomedical applications. These structures are often made by associating charged polyelectrolytes in aqueous solutions, avoiding toxic chemistries (crosslinking agents). We review the principal polysaccharides (glycosaminoglycans, marine polysaccharides, and derivatives) containing ionizable groups in their structures and cellulose (neutral polysaccharide). Physical materials with high stability in aqueous media can be developed depending on the selected strategy. We review strategies, including coacervation, ionotropic gelation, electrospinning, layer-by-layer coating, gelation of polymer blends, solvent evaporation, and freezing-thawing methods, that create polysaccharide-based assemblies via in situ (one-step) methods for biomedical applications. We focus on materials used for growth factor (GFs) delivery, scaffolds, antimicrobial coatings, and wound dressings.
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Affiliation(s)
- Paulo R. Souza
- Group of Polymeric Materials and Composites, Department of Chemistry, State University of Maringá (UEM), Maringá 87020-900, PR, Brazil; (P.R.S.); (A.C.d.O.); (B.H.V.)
| | - Ariel C. de Oliveira
- Group of Polymeric Materials and Composites, Department of Chemistry, State University of Maringá (UEM), Maringá 87020-900, PR, Brazil; (P.R.S.); (A.C.d.O.); (B.H.V.)
- Laboratory of Materials, Macromolecules and Composites, Federal University of Technology—Paraná (UTFPR), Apucarana 86812-460, PR, Brazil
| | - Bruno H. Vilsinski
- Group of Polymeric Materials and Composites, Department of Chemistry, State University of Maringá (UEM), Maringá 87020-900, PR, Brazil; (P.R.S.); (A.C.d.O.); (B.H.V.)
| | - Matt J. Kipper
- Department of Chemical and Biological Engineering, Colorado State University (CSU), Fort Collins, CO 80523, USA
- School of Advanced Materials Discovery, Colorado State University (CSU), Fort Collins, CO 80523, USA
- School of Biomedical Engineering, Colorado State University (CSU), Fort Collins, CO 80523, USA
| | - Alessandro F. Martins
- Group of Polymeric Materials and Composites, Department of Chemistry, State University of Maringá (UEM), Maringá 87020-900, PR, Brazil; (P.R.S.); (A.C.d.O.); (B.H.V.)
- Laboratory of Materials, Macromolecules and Composites, Federal University of Technology—Paraná (UTFPR), Apucarana 86812-460, PR, Brazil
- Department of Chemical and Biological Engineering, Colorado State University (CSU), Fort Collins, CO 80523, USA
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20
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Vlcek JR, Hedayati M, Melvin AC, Reynolds MM, Kipper MJ. Blood‐Compatible Materials: Blood‐Compatible Materials: Vascular Endothelium‐Mimetic Surfaces that Mitigate Multiple Cell‐Material Interactions (Adv. Healthcare Mater. 7/2021). Adv Healthc Mater 2021. [DOI: 10.1002/adhm.202170031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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21
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Vlcek JR, Hedayati M, Melvin AC, Reynolds MM, Kipper MJ. Blood-Compatible Materials: Vascular Endothelium-Mimetic Surfaces that Mitigate Multiple Cell-Material Interactions. Adv Healthc Mater 2021; 10:e2001748. [PMID: 33448158 DOI: 10.1002/adhm.202001748] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 10/05/2020] [Indexed: 12/17/2022]
Abstract
When flowing whole blood contacts medical device surfaces, the most common blood-material interactions result in coagulation, inflammation, and infection. Many new blood-contacting biomaterials have been proposed based on strategies that address just one of these common modes of failure. This study proposes to mitigate unfavorable biological reactions that occur with blood-contacting medical devices by designing multifunctional surfaces, with features optimized to meet multiple performance criteria. These multifunctional surfaces incorporate the release of the small molecule hormone nitric oxide (NO) with surface chemistry and nanotopography that mimic features of the vascular endothelial glycocalyx. These multifunctional surfaces have features that interact with coagulation components, inflammatory cells, and bacterial cells. While a single surface feature alone may not be sufficient to achieve multiple functions, the release of NO from the surfaces along with their modification to mimic the endothelial glycocalyx synergistically improves platelet-, leukocyte-, and bacteria-surface interactions. This work demonstrates that new blood-compatible materials should be designed with multiple features, to better address the multiple modes of failure of blood-contacting medical devices.
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Affiliation(s)
- Jessica R. Vlcek
- School of Biomedical Engineering Colorado State University Fort Collins CO 80523 USA
| | - Mohammadhasan Hedayati
- Department of Chemical and Biological Engineering Colorado State University Fort Collins CO 80523 USA
| | - Alyssa C. Melvin
- Department of Chemistry Colorado State University Fort Collins CO 80532 USA
| | - Melissa M. Reynolds
- Department of Chemistry Department of Chemical and Biological Engineering, and School of Biomedical Engineering Colorado State University Fort Collins CO 80523 USA
| | - Matt J. Kipper
- Department of Chemical and Biological Engineering School of Biomedical Engineering, and School of Advanced Materials Discovery Colorado State University Fort Collins CO 80523 USA
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22
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Hedayati M, Krapf D, Kipper MJ. Dynamics of long-term protein aggregation on low-fouling surfaces. J Colloid Interface Sci 2021; 589:356-366. [PMID: 33482534 DOI: 10.1016/j.jcis.2021.01.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 10/28/2020] [Revised: 12/13/2020] [Accepted: 01/01/2021] [Indexed: 01/12/2023]
Abstract
Understanding the mechanisms of protein interactions with solid surfaces is critical to predict how proteins affect the performance of materials in biological environments. Low-fouling and ultra-low fouling surfaces are often evaluated in short-term protein adsorption experiments, where 'short-term' is defined as the time required to reach an initial apparent or pseudo-equilibrium, which is usually less than 600 s. However, it has long been recognized that these short-term observations fail to predict protein adsorption behavior in the long-term, characterized by irreversible accumulation of protein on the surface. This important long-term behavior is frequently ignored or attributed to slow changes in surface chemistry over time-such as oxidation-often with little or no experimental evidence. Here, we report experiments measuring protein adsorption on "low-fouling" and "ultralow-fouling" surfaces using single-molecule localization microscopy to directly probe protein adsorption and desorption. The experiments detect protein adsorption for thousands of seconds, enabling direct observation of both short-term (reversible adsorption) and long-term (irreversible adsorption leading to accumulation) protein-surface interactions. By bridging the gap between these two time scales in a single experiment, this work enables us to develop a single mathematical model that predicts behavior in both temporal regimes. The experimental data in combination with the resulting model provide several important insights: (1) short-term measurements of protein adsorption using ensemble-averaging methods may not be sufficient for designing antifouling materials; (2) all investigated surfaces eventually foul when in long-term contact with protein solutions; (3) fouling can occur through surface-induced oligomerization of proteins which may be a distinct step from irreversible adsorption; and (4) surfaces can be designed to reduce oligomerization or the adsorption of oligomers, to prevent or delay fouling.
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Affiliation(s)
- Mohammadhasan Hedayati
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Diego Krapf
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA; School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO 80523, USA; Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO 80523, USA.
| | - Matt J Kipper
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA; School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA; School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO 80523, USA.
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Sabino RM, Mondini G, Kipper MJ, Martins AF, Popat KC. Tanfloc/heparin polyelectrolyte multilayers improve osteogenic differentiation of adipose-derived stem cells on titania nanotube surfaces. Carbohydr Polym 2021; 251:117079. [PMID: 33142622 PMCID: PMC7717535 DOI: 10.1016/j.carbpol.2020.117079] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/22/2020] [Accepted: 09/07/2020] [Indexed: 01/11/2023]
Abstract
In this study, a surface modification strategy using natural biopolymers on titanium is proposed to improve bone healing and promote rapid and successful osseointegration of orthopedic implants. Titania nanotubes were fabricated via an anodization process and the surfaces were further modified with polyelectrolyte multilayers (PEMs) based on Tanfloc (a cationic tannin derivative) and glycosaminoglycans (heparin and hyaluronic acid). Scanning electron microscopy (SEM), water contact angle measurements, and X-ray photoelectron spectroscopy were used to characterize the surfaces. Adipose-derived stem cells (ADSCs) were seeded on the surfaces, and the cell viability, adhesion, and proliferation were investigated. Osteogenesis was induced and osteogenic differentiation of human ADSCs on the surfaces was evaluated via mineralization and protein expression assays, immunofluorescent staining, and SEM. The Tanfloc/heparin PEMs on titania nanotubes improved the rate of osteogenic differentiation of ADSCs as well as the bone mineral deposition, and is therefore a promising approach for use in orthopedic implants.
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Affiliation(s)
- Roberta M Sabino
- School of Advanced Materials Discovery, Colorado State University, USA
| | - Gabriela Mondini
- Department of Biological Sciences, Pontifícia Universidade Católica do Paraná, Brazil
| | - Matt J Kipper
- School of Advanced Materials Discovery, Colorado State University, USA; School of Biomedical Engineering, Colorado State University, USA; Department of Chemical and Biological Engineering, Colorado State University, USA.
| | - Alessandro F Martins
- Department of Chemical and Biological Engineering, Colorado State University, USA; Laboratory of Materials, Macromolecules and Composites, Federal University of Technology, Brazil; Group of Polymers and Composite Materials, Chemical Department, State University of Maringá, Brazil
| | - Ketul C Popat
- School of Advanced Materials Discovery, Colorado State University, USA; School of Biomedical Engineering, Colorado State University, USA; Department of Mechanical Engineering, Colorado State University, USA.
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Aleem AR, Liu J, Wang J, Wang J, Zhao Y, Wang Y, Wang Y, Wang W, Rehman FU, Kipper MJ, Tang J. Selective Sensing of Cu 2+ and Fe 3+ Ions with Vis-Excitation using Fluorescent Eu 3+-Induced Aggregates of Polysaccharides (EIAP) in Mammalian Cells and Aqueous Systems. J Hazard Mater 2020; 399:122991. [PMID: 32937702 DOI: 10.1016/j.jhazmat.2020.122991] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 03/17/2020] [Revised: 05/02/2020] [Accepted: 05/17/2020] [Indexed: 06/11/2023]
Abstract
Fluorescent lanthanide complexes have favorable features for fluorescence-based sensors compared to organic fluorophores and quantum dots. They exhibit very long fluorescence lifetimes, sharp emission bands, and stability with respect to photo-bleaching, without blinking. However, these complexes are usually hydrophobic, and many are excited by UV light, making them hazardous and incompatible with aqueous environments and biological samples. In this work, the strong fluorescent Eu3+-induced aggregates of polysaccharides (EIAP) was used to improve their aqueous solubility, and to tune the appropriate excitation wavelength in the visible range for avoiding toxicity of UV light in biological applications. The complexes exhibit bright fluorescence with an excitation maximum in the visible range, near 405 nm. EIAP 3 also exhibit rapid quenching response in the presence of transition metal ions. This enables the detection of Cu2+ and Fe3+ below 1 ppm. The reverse of quenching response of copper by the addition of a chelating agent makes it possible to recover the fluorescence property. Successfully, the EIAP exhibit cytocompatibility with mammalian cells. Thus, these new polysaccharide-based complexes have the potential for rapid, sensitive and selective metal ion sensors for the environmental systems.
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Affiliation(s)
- Abdur Raheem Aleem
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao, 266071, People's Republic of China
| | - Jin Liu
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao, 266071, People's Republic of China
| | - Jing Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao, 266071, People's Republic of China
| | - Jing Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao, 266071, People's Republic of China
| | - Yue Zhao
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao, 266071, People's Republic of China
| | - Yao Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao, 266071, People's Republic of China
| | - Yanxin Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao, 266071, People's Republic of China
| | - Wei Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao, 266071, People's Republic of China
| | - Faisal Ul Rehman
- Department of Medical Oncology, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266003, People's Republic of China
| | - Matt J Kipper
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, Colorado, 80523, USA
| | - Jianguo Tang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Technology Cooperation on Hybrid Materials, Qingdao University, 308 Ningxia Road, Qingdao, 266071, People's Republic of China.
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Wigmosta TB, Popat KC, Kipper MJ. Bone morphogenetic protein-2 delivery from polyelectrolyte multilayers enhances osteogenic activity on nanostructured titania. J Biomed Mater Res A 2020; 109:1173-1182. [PMID: 32985077 DOI: 10.1002/jbm.a.37109] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 05/21/2020] [Revised: 09/22/2020] [Accepted: 09/26/2020] [Indexed: 01/09/2023]
Abstract
Incomplete osseointegration is primary cause of failure for orthopedic implants. New biomaterials that present stable signals promoting osteogenesis could reduce failure rates of orthopedic implants. In this study bone morphogenetic protein-2 (BMP-2) was delivered from titania nanotubes (Nt) modified with chitosan/heparin polyelectrolyte multilayers (PEMs). The surfaces were characterized by scanning electron microscopy and X-ray photoelectron spectroscopy. BMP-2 release from the surfaces was measured in vitro for up to 28 days. After an initial burst release of BMP-2 during the first 2 days, most of the BMP-2 remained on the surface. To determine the osteogenic properties of these surfaces, they were seeded with rat bone marrow cells; alkaline phosphatase (ALP) activity, total protein, calcium deposition, and osteocalcin were measured up to 4 weeks in vitro. When compared to Nt surfaces, the surfaces with BMP-2 induce greater osteocalcin and calcium deposition. PEMs provide sustained presentation of BMP-2, from a biomimetic surface. This enhances the osteogenic properties of the surface without requiring supraphysiologic growth factor dose. This growth factor delivery strategy could be used to improve bone healing outcomes and reduce complications for recipients of orthopedic implants.
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Affiliation(s)
- Tara B Wigmosta
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado, USA
| | - Ketul C Popat
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado, USA.,School of Advanced Materials Discovery, Colorado State University, Fort Collins, Colorado, USA.,Department of Mechanical Engineering, Colorado State University, Fort Collins, Colorado, USA
| | - Matt J Kipper
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado, USA.,School of Advanced Materials Discovery, Colorado State University, Fort Collins, Colorado, USA.,Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, Colorado, USA
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26
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Madruga LYC, Balaban RC, Popat KC, Kipper MJ. Biocompatible Crosslinked Nanofibers of Poly(Vinyl Alcohol)/Carboxymethyl-Kappa-Carrageenan Produced by a Green Process. Macromol Biosci 2020; 21:e2000292. [PMID: 33021064 DOI: 10.1002/mabi.202000292] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/19/2020] [Indexed: 12/26/2022]
Abstract
This study presents a new type of biocompatible nanofiber based on poly(vinyl alcohol) (PVA) and carboxymethyl-kappa-carrageenan (CMKC) blends, produced with no generation of hazardous waste. The nanofibers are produced by electrospinning using PVA:CMKC blends with ratios of 1:0, 1:0.25, 1:0.4, 1:0.5, and 1:0.75 (w/w PVA:CMKC) in aqueous solution, followed by thermal crosslinking. The diameter of the fibers is in the nanometer scale and below 300 nm. Fourier transform infrared spectroscopy shows the presence of the carboxyl and sulfate groups in all the fibers with CMKC. The nanofibers from water-soluble polymers are stabilized by thermal crosslinking. The incorporation of CMKC improves cytocompatibility, biodegradability, cell growth, and cell adhesion, compared to PVA nanofibers. Furthermore, the incorporation of CMKC modulates phenotype of human adipose-derived stem cells (ADSCs). PVA/CMKC nanofibers enhance ADSC response to osteogenic differentiation signals and are therefore good candidates for application in tissue engineering to support stem cells.
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Affiliation(s)
- Liszt Y C Madruga
- Institute of Chemistry, Federal University of Rio Grande do Norte (UFRN), Natal, RN, 59078-970, Brazil.,Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO, 80523, USA
| | - Rosangela C Balaban
- Institute of Chemistry, Federal University of Rio Grande do Norte (UFRN), Natal, RN, 59078-970, Brazil
| | - Ketul C Popat
- School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO, 80523, USA.,School of Biomedical Engineering, Colorado State University, Fort Collins, CO, 80523, USA.,Department of Mechanical Engineering, Colorado State University, Fort Collins, CO, 80523, USA
| | - Matt J Kipper
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO, 80523, USA.,School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO, 80523, USA.,School of Biomedical Engineering, Colorado State University, Fort Collins, CO, 80523, USA
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da Câmara PC, Madruga LY, Sabino RM, Vlcek J, Balaban RC, Popat KC, Martins AF, Kipper MJ. Polyelectrolyte multilayers containing a tannin derivative polyphenol improve blood compatibility through interactions with platelets and serum proteins. Materials Science and Engineering: C 2020; 112:110919. [DOI: 10.1016/j.msec.2020.110919] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/15/2020] [Accepted: 03/31/2020] [Indexed: 01/26/2023]
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28
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Lu P, Wang Y, Huang L, Lian S, Wang Y, Tang J, Belfiore LA, Kipper MJ. Tb 3+/Eu 3+ Complex-Doped Rigid Nanoparticles in Transparent Nanofibrous Membranes Exhibit High Quantum Yield Fluorescence. Nanomaterials (Basel) 2020; 10:E694. [PMID: 32268599 PMCID: PMC7221551 DOI: 10.3390/nano10040694] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/02/2020] [Accepted: 04/03/2020] [Indexed: 11/17/2022]
Abstract
In this study, transparent membranes containing luminescent Tb3+ and Eu3+ complex-doped silica nanoparticles were prepared via electrospinning. We prepared the electrospun fibrous membranes containing Tb(acac)3phen- (acac = acetylacetone, phen = 1,10-phenanthroline) and/or Eu(tta)3phen- (tta = 2-thenoyltrifluoroacetone) doped silica (M-Si-Tb3+ and M-Si-Eu3+) and studied their photoluminescence properties. The fibrous membranes containing the rare earth complexes were prepared by electrospinning. The surface morphology and thermal properties of the fibrous membrane were studied by atomic force microscopy (AFM), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), respectively. Fluorescence spectroscopy was used to characterize the fluorescence properties of the membranes. During the electrospinning process, the PVDF transitions from the α phase to the β phase, which exhibits a more rigid structure. The introduction of rigid materials, like PVDF and silica, can improve the fluorescence properties of the hybrid materials by reducing the rate of nonradiative decay. So the emission spectra at 548 nm (Tb) and 612 nm (Eu) were enhanced, as compared to the emission from the pure complex. Furthermore, the fluorescence lifetimes ranged from 0.6 to 1.5 ms and the quantum yields ranged from 32% to 61%. The luminescent fibrous membranes have potential applications in the fields of display panels, innovative electronic and optoelectronic devices.
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Affiliation(s)
- Peng Lu
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China; (P.L.); (L.H.); (S.L.); (Y.W.)
| | - Yanxin Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China; (P.L.); (L.H.); (S.L.); (Y.W.)
| | - Linjun Huang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China; (P.L.); (L.H.); (S.L.); (Y.W.)
| | - Sixian Lian
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China; (P.L.); (L.H.); (S.L.); (Y.W.)
| | - Yao Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China; (P.L.); (L.H.); (S.L.); (Y.W.)
| | - Jianguo Tang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China; (P.L.); (L.H.); (S.L.); (Y.W.)
| | - Laurence A. Belfiore
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA; (L.A.B.); (M.J.K.)
| | - Matt J. Kipper
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA; (L.A.B.); (M.J.K.)
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
- School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO 80523, USA
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29
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Lutzke A, Morey KJ, Medford JI, Kipper MJ. An FT-IR and XPS spectroscopy dataset of Pinus ponderosa sporopollenin and related samples to elucidate sporopollenin structural features. Data Brief 2020; 29:105129. [PMID: 31993473 PMCID: PMC6976926 DOI: 10.1016/j.dib.2020.105129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/29/2019] [Accepted: 01/06/2020] [Indexed: 11/24/2022] Open
Abstract
The ATR FT-IR spectra of Pinus ponderosa sporopollenin isolated from pollen spores by enzymatic digestion. Sporopollenin is also isolated by solvent extraction, followed by either acidolysis with phosphoric acid, and acetolysis is reported [1]. The FT-IR spectra are supplemented by XPS data of the isolated sporopollenin samples. The enzymatically isolated sporopollenin is subjected to a variety of chemical treatments and modifications, including alkaline hydrolysis, deuteration (by both D20 and methanol-d4), sodium cyanoborohydride reduction, hydrolysis by peracetic acid, bromination, acetylization with acetone and octanal, and acid-catalyzed ketal cleavage. The sporopollenin isolated by acidolysis and acetolysis are also subjected to alkaline hydrolysis. The sporopollenin samples are compared to a variety of model compounds representative of putative structural constituents and functional groups.
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Abstract
In this work, protein-surface interactions were probed in terms of adsorption and desorption of a model protein, bovine serum albumin, on a low-fouling surface with single-molecule localization microscopy. Single-molecule experiments enable precise determination of both adsorption and desorption rates. Strikingly the experimental data show anomalous desorption kinetics, evident as a surface dwell time that exhibits a power-law distribution, i.e. a heavy-tailed rather than the expected exponential distribution. As a direct consequence of this heavy-tailed distribution, the average desorption rate depends upon the time scale of the experiment and the protein surface concentration does not reach equilibrium. Further analysis reveals that the observed anomalous desorption emerges due to the reversible formation of a small fraction of soluble protein multimers (small oligomers), such that each one desorbs from the surface with a different rate. The overall kinetics can be described by a series of elementary reactions, yielding simple scaling relations that predict experimental observations. This work reveals a mechanistic origin for anomalous desorption kinetics that can be employed to interpret observations where low-protein fouling surfaces eventually foul when in long-term contact with protein solutions. The work also provides new insights that can be used to define design principles for non-fouling surfaces and to predict their performance.
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Affiliation(s)
- Mohammadhasan Hedayati
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA.
| | - Matt J Kipper
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA. and School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA. and School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO 80523, USA
| | - Diego Krapf
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA. and School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO 80523, USA and Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO 80523, USA
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Madruga LYC, Sabino RM, Santos ECG, Popat KC, Balaban RDC, Kipper MJ. Carboxymethyl-kappa-carrageenan: A study of biocompatibility, antioxidant and antibacterial activities. Int J Biol Macromol 2020; 152:483-491. [PMID: 32109473 DOI: 10.1016/j.ijbiomac.2020.02.274] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [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: 12/27/2019] [Revised: 02/23/2020] [Accepted: 02/24/2020] [Indexed: 12/18/2022]
Abstract
Chemical modification of polysaccharides is an important route to enhance, develop or change polysaccharide properties. In this study, carboxymethylation of kappa-carrageenan (KC) with monochloroacetic acid was performed to achieve different degrees of substitution (DS) of carboxymethyl-kappa-carrageenan (CMKC). The degree of substitution ranged from 0.8 to 1.6 and was calculated from the 1H NMR spectra. The chemical structure of the CMKCs was further characterized by FT-IR, and 13C NMR. FT-IR confirmed the carboxymethylation. Carboxymethylation increased viscosity of KC in water and decreased viscosity of KC in synthetic human sweat. Tests with human adipose derived stem cells showed higher viability and lower cytotoxicity for CMKCs when compared to KC. CMKCs showed no hemolytic activity to human red blood cells. CMKCs have increased antioxidant activity compared to KC. In antibacterial assays, CMKCs with DS of 0.8, 1.0 and 1.2 exhibited growth inhibition against Staphylococcus aureus, Bacillus cereus, Escherichia coli and Pseudomonas aeruginosa. CMKC with DS ranging from 1.0 to 1.2 are good candidate biomaterials for cell-contacting applications.
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Affiliation(s)
- Liszt Y C Madruga
- Institute of Chemistry, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil; Laboratory of Immunoparasitology, College of Pharmacy, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
| | - Roberta M Sabino
- School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO, United States
| | - Elizabeth C G Santos
- Laboratory of Immunoparasitology, College of Pharmacy, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
| | - Ketul C Popat
- School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO, United States; Department of Mechanical Engineering, Colorado State University, Fort Collins, CO, United States; School of Biomedical Engineering, Colorado State University, Fort Collins, CO, United States
| | - Rosangela de C Balaban
- Institute of Chemistry, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
| | - Matt J Kipper
- School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO, United States; School of Biomedical Engineering, Colorado State University, Fort Collins, CO, United States; Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO, United States.
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Lutzke A, Morey KJ, Medford JI, Kipper MJ. Detailed characterization of Pinus ponderosa sporopollenin by infrared spectroscopy. Phytochemistry 2020; 170:112195. [PMID: 31743799 DOI: 10.1016/j.phytochem.2019.112195] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/11/2019] [Accepted: 10/31/2019] [Indexed: 05/28/2023]
Abstract
In plant spores and pollen, sporopollenin occurs as a structural polymer with remarkable resistance to chemical degradation. This recalcitrant polymer is well-suited to analysis by non-destructive infrared spectroscopy. However, existing infrared characterization of sporopollenin has been limited in scope and occasionally contradictory. This study provides a comprehensive structural analysis of sporopollenin in the Pinus ponderosa pollen exine using infrared spectroscopy, including detailed band assignments, descriptions of chemical reactivity, and comparison to multiple reference substances. We observe that the infrared spectral characteristics of sporopollenin prepared by enzymatic digestion of the polysaccharide-based intine are largely consistent with a copolymer of aliphatic lipids and trans-4-hydroxycinnamic acid, without distinct contributions from α-pyrone or carotenoid substructures.
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Affiliation(s)
- Alec Lutzke
- Department of Chemical & Biological Engineering, Colorado State University, Fort Collins, CO, 80521, USA
| | - Kevin J Morey
- Department of Chemical & Biological Engineering, Colorado State University, Fort Collins, CO, 80521, USA
| | - June I Medford
- Department of Biology, Colorado State University, Fort Collins, CO, 80523, USA
| | - Matt J Kipper
- Department of Chemical & Biological Engineering, Colorado State University, Fort Collins, CO, 80521, USA.
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Hedayati M, Marruecos DF, Krapf D, Kaar JL, Kipper MJ. Protein adsorption measurements on low fouling and ultralow fouling surfaces: A critical comparison of surface characterization techniques. Acta Biomater 2020; 102:169-180. [PMID: 31731023 DOI: 10.1016/j.actbio.2019.11.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 07/11/2019] [Revised: 10/23/2019] [Accepted: 11/08/2019] [Indexed: 01/07/2023]
Abstract
Ultralow protein fouling behavior is a common target for new high-performance materials. Ultralow fouling is often defined based on the amount of irreversibly adsorbed protein (< 5 ng cm-2) measured by a surface ensemble averaging method. However, protein adsorption at solid interfaces is a dynamic process involving multiple steps, which may include adsorption, desorption, and irreversible protein denaturation. In order to better optimize the performance of antifouling surfaces, it is imperative to fully understand how proteins interact with surfaces, including kinetics of adsorption and desorption, conformation, stability, and amount of adsorbed proteins. Defining ultralow fouling surfaces based on a measurement at or near the limit of detection of a surface-averaged measurement may not capture all of this behavior. Single-molecule microscopy techniques can resolve individual protein-surface interactions with high temporal and spatial resolution. This information can be used to tune the properties of surfaces to better resist protein adsorption. In this work, we demonstrate how combining surface plasmon resonance, X-ray photoelectron spectroscopy, atomic force microscopy, and single-molecule localization microscopy provides a more complete picture of protein adsorption on low fouling and ultralow fouling polyelectrolyte multilayer and polymer brush surfaces, over different regimes of protein concentration. In this case, comparing the surfaces using surface plasmon resonance alone is insufficient to rank their resistance to protein adsorption. Our results suggest a revision of the accepted definition of ultralow fouling surfaces is timely: with the advent of time-resolved studies of protein adsorption kinetics at the single-molecule level, it is neither necessary nor sufficient to rely on a surface averaging techniques to qualify ultralow fouling surfaces. Since protein adsorption is a dynamic process, understanding how surface properties affect the kinetics of protein adsorption will enable the design of future generations of advanced antifouling materials. STATEMENT OF SIGNIFICANCE: The design of ultralow fouling surfaces is often optimized based on a single surface-averaging technique measuring the amount of irreversibly adsorbed protein. This work provides a critical comparison of alternative techniques for evaluating protein adsorption on low fouling and ultralow fouling surfaces, and demonstrates how additional information about the dynamics of protein-surface interactions at the interface can be obtained by application of single-molecule microscopy. This approach could be used to better elucidate mechanisms of protein resistance and design principles for advanced ultralow fouling materials.
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Affiliation(s)
- Mohammadhasan Hedayati
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80526, USA
| | - David Faulón Marruecos
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309, USA
| | - Diego Krapf
- Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO 80526, USA; School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80526, USA; School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO 80526, USA
| | - Joel L Kaar
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO 80309, USA
| | - Matt J Kipper
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80526, USA; School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80526, USA; School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO 80526, USA.
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Sabino RM, Kauk K, Madruga LYC, Kipper MJ, Martins AF, Popat KC. Enhanced hemocompatibility and antibacterial activity on titania nanotubes with tanfloc/heparin polyelectrolyte multilayers. J Biomed Mater Res A 2020; 108:992-1005. [DOI: 10.1002/jbm.a.36876] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/27/2019] [Accepted: 12/31/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Roberta M. Sabino
- School of Advanced Materials Discovery Colorado State University Fort Collins Colorado
| | - Kirsten Kauk
- School of Biomedical Engineering Colorado State University Fort Collins Colorado
- Department of Mechanical Engineering Colorado State University Fort Collins Colorado
| | - Liszt Y. C. Madruga
- Institute of Chemistry, Federal University of Rio Grande do Norte Natal Brazil
- Department of Chemical and Biological Engineering Colorado State University Fort Collins Colorado
| | - Matt J. Kipper
- School of Advanced Materials Discovery Colorado State University Fort Collins Colorado
- School of Biomedical Engineering Colorado State University Fort Collins Colorado
- Department of Chemical and Biological Engineering Colorado State University Fort Collins Colorado
| | - Alessandro F. Martins
- Department of Chemical and Biological Engineering Colorado State University Fort Collins Colorado
- Laboratory of Materials Macromolecules and Composites, Federal University of Technology Maringa Brazil
| | - Ketul C. Popat
- School of Advanced Materials Discovery Colorado State University Fort Collins Colorado
- School of Biomedical Engineering Colorado State University Fort Collins Colorado
- Department of Mechanical Engineering Colorado State University Fort Collins Colorado
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Zhang Z, Huang L, Wang Y, Yang K, Du Y, Wang Y, Kipper MJ, Belfiore LA, Tang J. Theory and simulation developments of confined mass transport through graphene-based separation membranes. Phys Chem Chem Phys 2020; 22:6032-6057. [DOI: 10.1039/c9cp05551g] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The perspectives of graphene-based membranes based on confined mass transport from simulations and experiments for water desalination.
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Affiliation(s)
- Zhijie Zhang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Linjun Huang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Yanxin Wang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Kun Yang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Yingchen Du
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Yao Wang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
| | - Matt J. Kipper
- Department of Chemical and Biological Engineering
- Colorado State University
- Fort Collins
- USA
| | - Laurence A. Belfiore
- Department of Chemical and Biological Engineering
- Colorado State University
- Fort Collins
- USA
| | - Jianguo Tang
- Institute of Hybrid Materials
- National Center of International Research for Hybrid Materials Technology
- National Base of International Science & Technology Cooperation
- College of Materials Science and Engineering
- Qingdao University
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36
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Ramin BB, Rufato KB, Sabino RM, Popat KC, Kipper MJ, Martins AF, Muniz EC. Chitosan/iota-carrageenan/curcumin-based materials performed by precipitating miscible solutions prepared in ionic liquid. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111199] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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37
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Rufato KB, Almeida VC, Kipper MJ, Rubira AF, Martins AF, Muniz EC. Polysaccharide-based adsorbents prepared in ionic liquid with high performance for removing Pb(II) from aqueous systems. Carbohydr Polym 2019; 215:272-279. [DOI: 10.1016/j.carbpol.2019.03.095] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 03/23/2019] [Accepted: 03/26/2019] [Indexed: 01/08/2023]
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38
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Shi J, Wang Y, Huang L, Lu P, Sun Q, Wang Y, Tang J, Belfiore LA, Kipper MJ. Polyvinylpyrrolidone Nanofibers Encapsulating an Anhydrous Preparation of Fluorescent SiO₂⁻Tb 3+ Nanoparticles. Nanomaterials (Basel) 2019; 9:nano9040510. [PMID: 30986951 PMCID: PMC6523366 DOI: 10.3390/nano9040510] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 03/15/2019] [Accepted: 03/18/2019] [Indexed: 11/16/2022]
Abstract
A novel anhydrous preparation of silica (SiO₂)-encapsulated terbium (Tb3+) complex nanoparticles has been investigated. The SiO₂-Tb3+ nanoparticles are incorporated in electrospun polyvinylpyrrolidone hybrid nanofibers. Transmission electron microscopy confirms that Tb3+ complexes are uniformly and stably encapsulated in or carried by nanosilica. The influence of pH on the fluorescence of Tb3+ complexes is discussed. The properties, composition, structure, and luminescence of the resulting SiO₂⁻Tb3+ hybrid nanoparticles are investigated in detail. There is an increase in the fluorescence lifetime of SiO₂⁻Tb3+ nanoparticles and SiO₂⁻Tb3+/polyvinylpyrrolidone (PVP) hybrid nanofibers compared with the pure Tb3+ complexes. Due to the enhanced optical properties, the fluorescent hybrid nanofibers have potential applications as photonic and photoluminescent materials.
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Affiliation(s)
- Jianhang Shi
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Yanxin Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Linjun Huang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Peng Lu
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Qiuyu Sun
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Yao Wang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Jianguo Tang
- Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Laurence A Belfiore
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA.
| | - Matt J Kipper
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA.
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA.
- School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO 80523, USA.
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39
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Du Y, Huang L, Wang Y, Yang K, Tang J, Wang Y, Cheng M, Zhang Y, Kipper MJ, Belfiore LA, Ranil WS. Recent developments in graphene‐based polymer composite membranes: Preparation, mass transfer mechanism, and applications. J Appl Polym Sci 2019. [DOI: 10.1002/app.47761] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Ying‐Chen Du
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and EngineeringQingdao University Qingdao 266071 People's Republic of China
| | - Lin‐Jun Huang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and EngineeringQingdao University Qingdao 266071 People's Republic of China
| | - Yan‐Xin Wang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and EngineeringQingdao University Qingdao 266071 People's Republic of China
| | - Kun Yang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and EngineeringQingdao University Qingdao 266071 People's Republic of China
| | - Jian‐Guo Tang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and EngineeringQingdao University Qingdao 266071 People's Republic of China
| | - Yao Wang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and EngineeringQingdao University Qingdao 266071 People's Republic of China
| | - Meng‐Meng Cheng
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and EngineeringQingdao University Qingdao 266071 People's Republic of China
| | - Yang Zhang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and EngineeringQingdao University Qingdao 266071 People's Republic of China
| | - Matt J. Kipper
- Department of Chemical and Biological EngineeringColorado State University Fort Collins Colorado 80523
| | - Laurence A. Belfiore
- Department of Chemical and Biological EngineeringColorado State University Fort Collins Colorado 80523
| | - Wickramasinghe S. Ranil
- Ralph E. Martin Department of Chemical and EngineeringUniversity of Arkansas Fayetteville Arkansas 72703
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40
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Yang K, Huang LJ, Wang YX, Du YC, Tang JG, Wang Y, Cheng MM, Zhang Y, Kipper MJ, Belfiore LA, Wickramasinghe SR. Graphene oxide/nanometal composite membranes for nanofiltration: synthesis, mass transport mechanism, and applications. NEW J CHEM 2019. [DOI: 10.1039/c8nj06045b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We reviewed the recent developments in graphene-based composite membranes and discussed their challenges in this paper.
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41
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da Câmara PCF, Balaban RC, Hedayati M, Popat KC, Martins AF, Kipper MJ. Novel cationic tannin/glycosaminoglycan-based polyelectrolyte multilayers promote stem cells adhesion and proliferation. RSC Adv 2019; 9:25836-25846. [PMID: 35530064 PMCID: PMC9070077 DOI: 10.1039/c9ra03903a] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 07/29/2019] [Indexed: 11/21/2022] Open
Abstract
Condensed tannin is a biologically derived polycation that can be combined with glycosaminoglycans (chondroitin sulfate and heparin) to prepare polyelectrolyte multilayers that promote stem cell adhesion and proliferation.
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Affiliation(s)
- Paulo C. F. da Câmara
- Laboratory of Petroleum Research
- LAPET
- Institute of Chemistry
- Federal University of Rio Grande do Norte
- UFRN
| | - Rosangela C. Balaban
- Laboratory of Petroleum Research
- LAPET
- Institute of Chemistry
- Federal University of Rio Grande do Norte
- UFRN
| | - Mohammadhasan Hedayati
- Department of Chemical and Biological Engineering
- Colorado State University
- Fort Collins
- USA
| | - Ketul C. Popat
- Department of Mechanical Engineering
- Colorado State University
- Fort Collins
- USA
| | - Alessandro F. Martins
- Laboratory of Materials, Macromolecules and Composites
- Federal University of Technology
- Apucarana
- Brazil
- Department of Chemical and Biological Engineering
| | - Matt J. Kipper
- Department of Chemical and Biological Engineering
- Colorado State University
- Fort Collins
- USA
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42
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Martins JG, Camargo SE, Bishop TT, Popat KC, Kipper MJ, Martins AF. Pectin-chitosan membrane scaffold imparts controlled stem cell adhesion and proliferation. Carbohydr Polym 2018; 197:47-56. [DOI: 10.1016/j.carbpol.2018.05.062] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 04/16/2018] [Accepted: 05/21/2018] [Indexed: 01/23/2023]
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43
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Cheng MM, Huang LJ, Wang YX, Tang JG, Wang Y, Zhao YC, Liu GF, Zhang Y, Kipper MJ, Wickramasinghe SR. Reduced graphene oxide–gold nanoparticle membrane for water purification. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1525400] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Meng-meng Cheng
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, College of Materials Science and Engineering, Qingdao University, Qingdao, P. R. China
| | | | - Yan-xin Wang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, College of Materials Science and Engineering, Qingdao University, Qingdao, P. R. China
| | - Jian-guo Tang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, College of Materials Science and Engineering, Qingdao University, Qingdao, P. R. China
| | - Yao Wang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, College of Materials Science and Engineering, Qingdao University, Qingdao, P. R. China
| | - Yun-chao Zhao
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, College of Materials Science and Engineering, Qingdao University, Qingdao, P. R. China
| | - Gui-fei Liu
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, College of Materials Science and Engineering, Qingdao University, Qingdao, P. R. China
| | - Yang Zhang
- Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, College of Materials Science and Engineering, Qingdao University, Qingdao, P. R. China
| | - Matt J. Kipper
- Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO, USA
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44
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Hedayati M, Reynolds MM, Krapf D, Kipper MJ. Nanostructured Surfaces That Mimic the Vascular Endothelial Glycocalyx Reduce Blood Protein Adsorption and Prevent Fibrin Network Formation. ACS Appl Mater Interfaces 2018; 10:31892-31902. [PMID: 30156830 DOI: 10.1021/acsami.8b09435] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Blood-contacting materials are critical in many applications where long-term performance is desired. However, there are currently no engineered materials used in cardiovascular implants and devices that completely prevent clotting when in long-term contact with whole blood. The most common approach to developing next-generation blood-compatible materials is to design surface chemistries and structures that reduce or eliminate protein adsorption to prevent blood clotting. This work proposes a new paradigm for controlling protein-surface interactions by strategically mimicking key features of the glycocalyx lining the interior surfaces of blood vessels: negatively charged glycosaminoglycans organized into a polymer brush with nanoscale domains. The interactions of two important proteins from blood (albumin and fibrinogen) with these new glycocalyx mimics are revealed in detail using surface plasmon resonance and single-molecule microscopy. Surface plasmon resonance shows that these blood proteins interact reversibly with the glycocalyx mimics, but have no irreversible adsorption above the limit of detection. Single-molecule microscopy is used to compare albumin and fibrinogen interactions on surfaces with and without glycocalyx-mimetic nanostructures. Microscopy videos reveal a new mechanism whereby the glycocalyx-mimetic nanostructures eliminate the formation of fibrin networks on the surfaces. This approach shows for the first time that the nanoscale structure and organization of glycosaminoglycans in the glycocalyx are essential to (i) reduce protein adsorption, (ii) reversibly bind fibrin(ogen), and (iii) inhibit fibrin network formation on surfaces. The insights gained from this work suggest new design principles for blood-compatible surfaces. New surfaces developed using these design principles could reduce risk of catastrophic failures of blood-contacting medical devices.
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45
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Martins AF, Facchi SP, da Câmara PCF, Camargo SEA, Camargo CHR, Popat KC, Kipper MJ. Novel poly(ε-caprolactone)/amino-functionalized tannin electrospun membranes as scaffolds for tissue engineering. J Colloid Interface Sci 2018; 525:21-30. [PMID: 29680300 DOI: 10.1016/j.jcis.2018.04.060] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [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: 02/25/2018] [Revised: 04/13/2018] [Accepted: 04/15/2018] [Indexed: 12/21/2022]
Abstract
Poly(ε-caprolactone) (PCL) is a hydrophobic and cytocompatible aliphatic polyester that has been used to produce PCL-based nanofibrous for both wound healing and tissue repair. However, the high hydrophobicity and low water adsorptive have been challenges for developing PCL-based materials for use in tissue engineering field. Here, we report a new polymer (a hydrophilic amino-functionalized tannin (TN)) that is associated with PCL for developing PCL-TN blends at different PCL:TN weight ratios (100:0, 95:5, 85:15 and 78:22). PCL:TN ratio may be tuned to modulate hydrophilicity and cytocompatibility of the nanofibers. The neutralization step and surface wettability played an important role in the attachment of human adipose-derived stem cells (ADSC cells) on PCL-TN membranes. Also, fluorescence images confirmed great proliferation of ADSC cells on the PCL-TN electrospun surfaces. Yet, neutralized PCL-TN nanofibers promoted bactericidal activity against Pseudomonas aeruginosa. These membranes have potential to be used as scaffolds for tissue engineering purposes.
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Affiliation(s)
- Alessandro F Martins
- Postgraduate Program in Materials Science & Engineering (PPGCEM), Federal University of Technology (UTFPR-LD), 86036-370 Londrina, PR, Brazil; Postgraduate Program in Environmental Engineering (PPGEA), Federal University of Technology (UTFPR-AP), 86812-460 Apucarana, PR, Brazil; Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO, United States.
| | - Suelen P Facchi
- Postgraduate Program in Environmental Engineering (PPGEA), Federal University of Technology (UTFPR-AP), 86812-460 Apucarana, PR, Brazil
| | - Paulo C F da Câmara
- Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO, United States
| | - Samira E A Camargo
- Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO, United States
| | - Carlos H R Camargo
- Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO, United States
| | - Ketul C Popat
- Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO, United States
| | - Matt J Kipper
- Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO, United States
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46
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Hedayati M, Kipper MJ. Atomic force microscopy of adsorbed proteoglycan mimetic nanoparticles: Toward new glycocalyx-mimetic model surfaces. Carbohydr Polym 2018; 190:346-355. [DOI: 10.1016/j.carbpol.2018.02.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/04/2018] [Accepted: 02/07/2018] [Indexed: 12/30/2022]
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47
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Martins JG, de Oliveira AC, Garcia PS, Kipper MJ, Martins AF. Durable pectin/chitosan membranes with self-assembling, water resistance and enhanced mechanical properties. Carbohydr Polym 2018. [DOI: 10.1016/j.carbpol.2018.01.112] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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48
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Lin C, Romero R, Sorokina LV, Ballinger KR, Place LW, Kipper MJ, Khetani SR. A polyelectrolyte multilayer platform for investigating growth factor delivery modes in human liver cultures. J Biomed Mater Res A 2017; 106:971-984. [PMID: 29139224 DOI: 10.1002/jbm.a.36293] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 07/26/2017] [Revised: 09/19/2017] [Accepted: 10/26/2017] [Indexed: 01/19/2023]
Abstract
Polyelectrolyte multilayers (PEMs) of chitosan and heparin are useful for mimicking growth factor (GF) binding to extracellular matrix (ECM) as in vivo. Here, we developed a PEM platform for delivering bound/adsorbed GFs to monocultures of primary human hepatocytes (PHHs) and PHH/non-parenchymal cell (NPC) co-cultures, which are useful for drug development and regenerative medicine. The effects of ECM protein coating (collagen I, fibronectin, and Matrigel®) and terminal PEM layer on PHH attachment/functions were determined. Then, heparin-terminated/fibronectin-coated PEMs were used to deliver varying concentrations of an adsorbed model GF, transforming growth factor β (TGFβ), to PHH monocultures while using soluble TGFβ delivery via culture medium as the conventional control. Soluble TGFβ delivery caused a severe, monotonic, and sustained downregulation of all PHH functions measured (albumin and urea secretions, cytochrome-P450 2A6 and 3A4 enzyme activities), whereas adsorbed TGFβ delivery caused transient upregulation of 3 out of 4 functions. Finally, functionally stable co-cultures of PHHs and 3T3-J2 murine embryonic fibroblasts were created on the heparin-terminated/fibronectin-coated PEMs modified with adsorbed TGFβ to elucidate similarities and differences in functional response relative to the monocultures. In conclusion, chitosan-heparin PEMs constitute a robust platform for investigating the effects of GF delivery modes on PHH monocultures and PHH/NPC co-cultures. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 971-984, 2018.
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Affiliation(s)
- Christine Lin
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado.,Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois
| | - Raimundo Romero
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado
| | - Lioudmila V Sorokina
- Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois
| | - Kimberly R Ballinger
- Department of Mechanical Engineering, Colorado State University, Fort Collins, Colorado
| | - Laura W Place
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado
| | - Matt J Kipper
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado.,Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, Colorado
| | - Salman R Khetani
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado.,Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois.,Department of Mechanical Engineering, Colorado State University, Fort Collins, Colorado
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49
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Pauly HM, Place LW, Haut Donahue TL, Kipper MJ. Mechanical Properties and Cell Compatibility of Agarose Hydrogels Containing Proteoglycan Mimetic Graft Copolymers. Biomacromolecules 2017; 18:2220-2229. [DOI: 10.1021/acs.biomac.7b00643] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Hannah M. Pauly
- School
of Biomedical Engineering, ∥Department of Mechanical Engineering, and ⊥Department of
Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, Colorado United States
| | - Laura W. Place
- School
of Biomedical Engineering, ∥Department of Mechanical Engineering, and ⊥Department of
Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, Colorado United States
| | - Tammy L. Haut Donahue
- School
of Biomedical Engineering, ∥Department of Mechanical Engineering, and ⊥Department of
Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, Colorado United States
| | - Matt J. Kipper
- School
of Biomedical Engineering, ∥Department of Mechanical Engineering, and ⊥Department of
Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, Colorado United States
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50
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Cheng MM, Huang LJ, Wang YX, Tang JG, Wang Y, Zhao YC, Liu GF, Zhang Y, Kipper MJ, Belfiore LA, Ranil WS. Recent developments in graphene-based/nanometal composite filter membranes. RSC Adv 2017. [DOI: 10.1039/c7ra08098k] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Significant achievements have been made on the development of next generation filtration and separation membranes using graphene materials, graphene-based membranes are promising in many areas such as membrane separation, water desalination.
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