1
|
Kwiatkowska A, Granicka LH. Anti-Viral Surfaces in the Fight against the Spread of Coronaviruses. MEMBRANES 2023; 13:membranes13050464. [PMID: 37233525 DOI: 10.3390/membranes13050464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 04/22/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023]
Abstract
This review is conducted against the background of nanotechnology, which provides us with a chance to effectively combat the spread of coronaviruses, and which primarily concerns polyelectrolytes and their usability for obtaining protective function against viruses and as carriers for anti-viral agents, vaccine adjuvants, and, in particular, direct anti-viral activity. This review covers nanomembranes in the form of nano-coatings or nanoparticles built of natural or synthetic polyelectrolytes--either alone or else as nanocomposites for creating an interface with viruses. There are not a wide variety of polyelectrolytes with direct activity against SARS-CoV-2, but materials that are effective in virucidal evaluations against HIV, SARS-CoV, and MERS-CoV are taken into account as potentially active against SARS-CoV-2. Developing new approaches to materials as interfaces with viruses will continue to be relevant in the future.
Collapse
Affiliation(s)
- Angelika Kwiatkowska
- Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Ks. Trojdena 4 St., 02-109 Warsaw, Poland
| | - Ludomira H Granicka
- Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Ks. Trojdena 4 St., 02-109 Warsaw, Poland
| |
Collapse
|
2
|
Abdal Dayem A, Lee SB, Lim KM, Kim A, Shin HJ, Vellingiri B, Kim YB, Cho SG. Bioactive peptides for boosting stem cell culture platform: Methods and applications. Biomed Pharmacother 2023; 160:114376. [PMID: 36764131 DOI: 10.1016/j.biopha.2023.114376] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
Peptides, short protein fragments, can emulate the functions of their full-length native counterparts. Peptides are considered potent recombinant protein alternatives due to their specificity, high stability, low production cost, and ability to be easily tailored and immobilized. Stem cell proliferation and differentiation processes are orchestrated by an intricate interaction between numerous growth factors and proteins and their target receptors and ligands. Various growth factors, functional proteins, and cellular matrix-derived peptides efficiently enhance stem cell adhesion, proliferation, and directed differentiation. For that, peptides can be immobilized on a culture plate or conjugated to scaffolds, such as hydrogels or synthetic matrices. In this review, we assess the applications of a variety of peptides in stem cell adhesion, culture, organoid assembly, proliferation, and differentiation, describing the shortcomings of recombinant proteins and their full-length counterparts. Furthermore, we discuss the challenges of peptide applications in stem cell culture and materials design, as well as provide a brief outlook on future directions to advance peptide applications in boosting stem cell quality and scalability for clinical applications in tissue regeneration.
Collapse
Affiliation(s)
- Ahmed Abdal Dayem
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Seoul 05029, Republic of Korea
| | - Soo Bin Lee
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Seoul 05029, Republic of Korea
| | - Kyung Min Lim
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Seoul 05029, Republic of Korea; R&D Team, StemExOne co., ltd. 303, Life Science Bldg, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Aram Kim
- Department of Urology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul 05029, Republic of Korea; R&D Team, StemExOne co., ltd. 303, Life Science Bldg, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Hyun Jin Shin
- Department of Ophthalmology, Research Institute of Medical Science, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul 05029, Republic of Korea; R&D Team, StemExOne co., ltd. 303, Life Science Bldg, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Balachandar Vellingiri
- Stem cell and Regenerative Medicine/Translational Research, Department of Zoology, School of Basic Sciences, Central University of Punjab (CUPB), Bathinda 151401, Punjab, India
| | - Young Bong Kim
- Department of Biomedical Science & Engineering, KU Convergence Science and Technology Institute, Konkuk University, Seoul 05029, Republic of Korea
| | - Ssang-Goo Cho
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Seoul 05029, Republic of Korea; R&D Team, StemExOne co., ltd. 303, Life Science Bldg, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.
| |
Collapse
|
3
|
Lee H, Son D, Lee S, Eun K, Kim M, Paeng K. Utilization of Polymer-Tethered Probes for the Assessment of Segmental Polymer Dynamics near the Glass Transition. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hyangseok Lee
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Dongwan Son
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Soohyun Lee
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Kyunghyun Eun
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Myungwoong Kim
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Keewook Paeng
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
| |
Collapse
|
4
|
An S, Nam J, Kanimozhi C, Song Y, Kim S, Shin N, Gopalan P, Kim M. Photoimageable Organic Coating Bearing Cyclic Dithiocarbonate for a Multifunctional Surface. ACS APPLIED MATERIALS & INTERFACES 2022; 14:3274-3283. [PMID: 35045603 DOI: 10.1021/acsami.1c19559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We report the fabrication of photocross-linkable and surface-functionalizable polymeric thin films using reactive cyclic dithiocarbonate (DTC)-containing copolymers. The chemical functionalities of these material surfaces were precisely defined with light illumination. The DTC copolymers, namely, poly(dithiocarbonate methylene methacrylate-random-alkyl methacrylate)s, were synthesized via reversible addition-fragmentation chain transfer polymerization, and the reaction kinetics was thoroughly analyzed. The copolymers were cross-linked into a coating using a bifunctional urethane cross-linker that contains a photolabile o-nitrobenzyl group and releases aniline upon exposure to light. The nucleophilic attack of the aromatic amine opens the DTC group, forming a carbamothioate bond and generating a reactive thiol group in the process. The surface concentrations of the unreacted DTC and thiol were effectively controlled by varying the amounts of the copolymer and the cross-linker. The use of methacrylate comonomers led to additional reactive surface functionality such as carboxylic acid via acid hydrolysis. The successful transformations of the resulting DTC, thiol, and carboxylic acid groups to different functionalities via sequential nucleophilic ring opening, thiol-ene, and carbodiimide coupling reactions under ambient conditions were confirmed quantitatively using X-ray photoelectron spectroscopy. The presented chemistries were readily adapted to the immobilization of complex molecules such as a fluorophore and a protein in lithographically defined regions, highlighting their potential in creating organic coatings that can have multiple functional groups under ambient conditions.
Collapse
Affiliation(s)
- Sol An
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Jieun Nam
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Catherine Kanimozhi
- Department of Materials Science and Engineering, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Youngjoo Song
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Seungjun Kim
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Naechul Shin
- Department of Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
- Program in Biomedical Science & Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Padma Gopalan
- Department of Materials Science and Engineering, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Myungwoong Kim
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
| |
Collapse
|
5
|
Krutty JD, Sun J, Koesser K, Murphy WL, Gopalan P. Polymer-Coated Magnetic Microspheres Conjugated with Growth Factor Receptor Binding Peptides Enable Cell Sorting. ACS Biomater Sci Eng 2021; 7:5927-5932. [PMID: 34851098 DOI: 10.1021/acsbiomaterials.1c01199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The separation and sorting of human cells is an important step in the bioprocessing of cell-based therapeutics. Heterogeneous mixtures of cells must be sorted to isolate the desired cell type and purify the final product. This process is often achieved by antibody-based sorting techniques. In this work, we demonstrate that magnetic microspheres may be functionalized with peptides that selectively bind to cells on the basis of their relative concentration of specific surface proteins. Five-micrometer-magnetic microspheres were coated with the synthetic copolymer PVG (poly(poly(ethylene glycol)methyl ether methacrylate-ran-vinyl dimethyl azlactone-ran-glycidyl methacrylate) and functionalized with the vascular endothelial growth factor receptor binding peptide (VRBP), which binds to the vascular endothelial growth factor receptor (VEGFR). These microspheres exhibited low cytotoxicity and bind to cells depending on their relative surface protein expression. Finally, coated, magnetic microspheres were used to separate heterogeneous populations of cells dependent on their VEGFR expression through magnetic-assisted cell sorting (MACS), demonstrating that peptide-based cell sorting mechanisms may be useful in the bioprocessing of human-cell-based products.
Collapse
Affiliation(s)
- John D Krutty
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Jian Sun
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Kevin Koesser
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - William L Murphy
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States.,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States.,Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Padma Gopalan
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States.,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States.,Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| |
Collapse
|
6
|
Chung Y, Nam J, Son D, Lee H, Kim M, Paeng K. Direct Observations of Segmental Dynamics at the Polymer–Substrate Interface Enabled by Localizing Fluorescent Probes with Polymer Brushes. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02869] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yura Chung
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jieun Nam
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Dongwan Son
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Hyangseok Lee
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Myungwoong Kim
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Keewook Paeng
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
| |
Collapse
|
7
|
Kasza G, Stumphauser T, Bisztrán M, Szarka G, Hegedüs I, Nagy E, Iván B. Thermoresponsive Poly( N, N-diethylacrylamide- co-glycidyl methacrylate) Copolymers and Its Catalytically Active α-Chymotrypsin Bioconjugate with Enhanced Enzyme Stability. Polymers (Basel) 2021; 13:987. [PMID: 33806995 PMCID: PMC8004754 DOI: 10.3390/polym13060987] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/19/2021] [Accepted: 03/20/2021] [Indexed: 12/11/2022] Open
Abstract
Responsive (smart, intelligent, adaptive) polymers have been widely explored for a variety of advanced applications in recent years. The thermoresponsive poly(N,N-diethylacrylamide) (PDEAAm), which has a better biocompatibility than the widely investigated poly(N,N-isopropylacrylamide), has gained increased interest in recent years. In this paper, the successful synthesis, characterization, and bioconjugation of a novel thermoresponsive copolymer, poly(N,N-diethylacrylamide-co-glycidyl methacrylate) (P(DEAAm-co-GMA)), obtained by free radical copolymerization with various comonomer contents and monomer/initiator ratios are reported. It was found that all the investigated copolymers possess LCST-type thermoresponsive behavior with small extent of hysteresis, and the critical solution temperatures (CST), i.e., the cloud and clearing points, decrease linearly with increasing GMA content of these copolymers. The P(DEAAm-co-GMA) copolymer with pendant epoxy groups was found to conjugate efficiently with α-chymotrypsin in a direct, one-step reaction, leading to enzyme-polymer nanoparticle (EPNP) with average size of 56.9 nm. This EPNP also shows reversible thermoresponsive behavior with somewhat higher critical solution temperature than that of the unreacted P(DEAAm-co-GMA). Although the catalytic activity of the enzyme-polymer nanoconjugate is lower than that of the native enzyme, the results of the enzyme activity investigations prove that the pH and thermal stability of the enzyme is significantly enhanced by conjugation the with P(DEAAm-co-GMA) copolymer.
Collapse
Affiliation(s)
- György Kasza
- Polymer Chemistry Research Group, Institute of Materials and Environment Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2., H-1117 Budapest, Hungary; (T.S.); (M.B.); (G.S.)
| | - Tímea Stumphauser
- Polymer Chemistry Research Group, Institute of Materials and Environment Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2., H-1117 Budapest, Hungary; (T.S.); (M.B.); (G.S.)
| | - Márk Bisztrán
- Polymer Chemistry Research Group, Institute of Materials and Environment Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2., H-1117 Budapest, Hungary; (T.S.); (M.B.); (G.S.)
| | - Györgyi Szarka
- Polymer Chemistry Research Group, Institute of Materials and Environment Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2., H-1117 Budapest, Hungary; (T.S.); (M.B.); (G.S.)
| | - Imre Hegedüs
- Chemical and Biochemical Procedures Laboratory, Institute of Biomolecular and Chemical Engineering, Faculty of Engineering, University of Pannonia, Egyetem u. 10, H-8200 Veszprém, Hungary; (I.H.); (E.N.)
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó u. 37–47, H-1094 Budapest, Hungary
| | - Endre Nagy
- Chemical and Biochemical Procedures Laboratory, Institute of Biomolecular and Chemical Engineering, Faculty of Engineering, University of Pannonia, Egyetem u. 10, H-8200 Veszprém, Hungary; (I.H.); (E.N.)
| | - Béla Iván
- Polymer Chemistry Research Group, Institute of Materials and Environment Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2., H-1117 Budapest, Hungary; (T.S.); (M.B.); (G.S.)
| |
Collapse
|
8
|
Krutty JD, Koesser K, Schwartz S, Yun J, Murphy WL, Gopalan P. Xeno-Free Bioreactor Culture of Human Mesenchymal Stromal Cells on Chemically Defined Microcarriers. ACS Biomater Sci Eng 2021; 7:617-625. [PMID: 33448784 DOI: 10.1021/acsbiomaterials.0c00663] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Human mesenchymal stromal cells (hMSC), also called mesenchymal stem cells, are adult cells that have demonstrated their potential in therapeutic applications, highlighted by their ability to differentiate down different lineages, modulate the immune system, and produce biologics. There is a pressing need for scalable culture systems for hMSC due to the large number of cells needed for clinical applications. Most current methods for expanding hMSC fail to provide a reproducible cell product in clinically required cell numbers without the use of serum-containing media or harsh enzymes. In this work, we apply a tailorable, thin, synthetic polymer coating-poly(poly(ethylene glycol) methyl ether methacrylate-ran-vinyl dimethyl azlactone-ran-glycidyl methacrylate) (P(PEGMEMA-r-VDM-r-GMA), PVG)-to the surface of commercially available polystyrene (PS) microcarriers to create chemically defined three-dimensional (3D) surfaces for large-scale cell expansion. These chemically defined microcarriers provide a reproducible surface that does not rely on the adsorption of xenogeneic serum proteins to mediate cell adhesion, enabling their use in xeno-free culture systems. Specifically, this work demonstrates the improved adhesion of hMSC to coated microcarriers over PS microcarriers in xeno-free media and describes their use in a readily scalable, bioreactor-based culture system. Additionally, these surfaces resist the adsorption of media-borne and cell-produced proteins, which result in integrin-mediated cell adhesion throughout the culture period. This feature allows the cells to be efficiently passaged from the microcarrier using a chemical chelating agent (ethylenediaminetetraacetic acid (EDTA)) in the absence of cleavage enzymes, an improvement over other microcarrier products in the field. Bioreactor culture of hMSC on these microcarriers enabled the production of hMSC over 4 days from a scalable, xeno-free environment.
Collapse
Affiliation(s)
- John D Krutty
- Department of Materials Science and Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States
| | - Kevin Koesser
- Department of Biomedical Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States
| | - Stephen Schwartz
- Department of Biomedical Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States
| | - Junsu Yun
- Department of Materials Science and Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States
| | - William L Murphy
- Department of Materials Science and Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States.,Department of Biomedical Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States.,Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States
| | - Padma Gopalan
- Department of Materials Science and Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States.,Department of Biomedical Engineering, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States.,Department of Chemistry, University of Wisconsin-Madison, 1500 University Avenue, Madison, Wisconsin 53706, United States
| |
Collapse
|
9
|
Le NNT, Liu TL, Johnston J, Krutty JD, Templeton KM, Harms V, Dias A, Le H, Gopalan P, Murphy WL. Customized hydrogel substrates for serum-free expansion of functional hMSCs. Biomater Sci 2020; 8:3819-3829. [PMID: 32543628 PMCID: PMC7436193 DOI: 10.1039/d0bm00540a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
We describe a screening approach to identify customized substrates for serum-free human mesenchymal stromal cell (hMSC) culture. In particular, we combine a biomaterials screening approach with design of experiments (DOE) and multivariate analysis (MVA) to understand the effects of substrate stiffness, substrate adhesivity, and media composition on hMSC behavior in vitro. This approach enabled identification of poly(ethylene glycol)-based and integrin binding hydrogel substrate compositions that supported functional hMSC expansion in multiple serum-containing and serum-free media, as well as the expansion of MSCs from multiple, distinct sources. The identified substrates were compatible with standard thaw, seed, and harvest protocols. Finally, we used MVA on the screening data to reveal the importance of serum and substrate stiffness on hMSC expansion, highlighting the need for customized cell culture substrates in optimal hMSC biomanufacturing processes.
Collapse
Affiliation(s)
- Ngoc Nhi T Le
- Materials Science Program, University of Wisconsin-Madison, Madison, WI, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
An S, Kim H, Kim M, Kim S. Photoinduced Modulation of Polymeric Interfacial Behavior Controlling Thin-Film Block Copolymer Wetting. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:3046-3056. [PMID: 32151131 DOI: 10.1021/acs.langmuir.0c00266] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The tunable surface-wetting properties of photosensitive random copolymer mats were used to spatially control the orientations of thin-film block copolymer (BCP) structures. A photosensitive mat was produced via thermal treatment on spin-coated random copolymers of poly(styrene-ran-2-nitrobenzyl methacrylate-ran-glycidyl methacrylate), synthesized via reversible-deactivation radical polymerization. The degree of UV-induced deprotection of the nitrobenzyl esters in the mat was precisely controlled through the amount of UV-irradiation energy imparted to the mat. The resulting polarity switching of the constituents collectively altered the interfacial wetting properties of the mat, and the tunability allowed lamellar or cylinder-forming poly(styrene-b-methyl methacrylate) BCP thin films, applied over the mat, to change the domain orientation from perpendicular to parallel at proper UV exposures. UV irradiation passing through a photomask was capable of generating defined regions of BCP domains with targeted orientations.
Collapse
Affiliation(s)
- Sol An
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Korea
| | - Heein Kim
- Department of Polymer Science and Engineering, Inha University, Incheon 22212, Korea
| | - Myungwoong Kim
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Korea
| | - Sangwon Kim
- Department of Polymer Science and Engineering, Inha University, Incheon 22212, Korea
| |
Collapse
|
11
|
Peng H, Rübsam K, Hu C, Jakob F, Schwaneberg U, Pich A. Stimuli-Responsive Poly( N-Vinyllactams) with Glycidyl Side Groups: Synthesis, Characterization, and Conjugation with Enzymes. Biomacromolecules 2019; 20:992-1006. [PMID: 30608144 DOI: 10.1021/acs.biomac.8b01608] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Herein we report the synthesis of new reactive stimuli-responsive polymers by RAFT copolymerization of glycidyl methacrylate and three cyclic N-vinyllactam derivatives. The copolymerization process was thoroughly investigated and the influence of the steric hindrance originating from the monomer structure of cyclic N-vinyllactams on the polymerization process and the properties of obtained copolymers were studied. A series of water-soluble copolymers with variable chemical composition, controlled molecular weight and narrow dispersity ( Đ) were synthesized and their properties are systematically investigated. Experimentally determined cloud points for different copolymers in aqueous solutions indicate shift of lower critical solution temperature (LCST) to lower values with the increase of GMA content in copolymers and increase of the lactam ring size. The obtained reactive stimuli-responsive copolymers can be efficiently used for encapsulation of cellulase in water-in-oil emulsions forming biohybrid nanogels. The enzymes entrapped in nanogels demonstrated significantly improved resistance against harsh store conditions, chaotropic agents, and organic solvents.
Collapse
Affiliation(s)
- Huan Peng
- Functional and Interactive Polymers, Institute of Technical and Macromolecular Chemistry , RWTH Aachen University , Aachen , Germany.,DWI Leibniz Institute for Interactive Materials e.V. , Aachen , Germany
| | - Kristin Rübsam
- DWI Leibniz Institute for Interactive Materials e.V. , Aachen , Germany
| | - Chaolei Hu
- Functional and Interactive Polymers, Institute of Technical and Macromolecular Chemistry , RWTH Aachen University , Aachen , Germany.,DWI Leibniz Institute for Interactive Materials e.V. , Aachen , Germany
| | - Felix Jakob
- Institute for Biotechnology , RWTH Aachen University , Aachen , Germany.,DWI Leibniz Institute for Interactive Materials e.V. , Aachen , Germany
| | - Ulrich Schwaneberg
- Institute for Biotechnology , RWTH Aachen University , Aachen , Germany.,DWI Leibniz Institute for Interactive Materials e.V. , Aachen , Germany
| | - Andrij Pich
- Functional and Interactive Polymers, Institute of Technical and Macromolecular Chemistry , RWTH Aachen University , Aachen , Germany.,DWI Leibniz Institute for Interactive Materials e.V. , Aachen , Germany
| |
Collapse
|
12
|
Krutty JD, Dias AD, Yun J, Murphy WL, Gopalan P. Synthetic, Chemically Defined Polymer-Coated Microcarriers for the Expansion of Human Mesenchymal Stem Cells. Macromol Biosci 2018; 19:e1800299. [PMID: 30565870 DOI: 10.1002/mabi.201800299] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 10/12/2018] [Indexed: 12/20/2022]
Abstract
Mesenchymal stem cells (MSC), also called marrow stromal cells, are adult cells that have attracted interest for their potential uses in therapeutic applications. There is a pressing need for scalable culture systems due to the large number of cells needed for clinical treatments. Here, a tailorable thin polymer coating-poly(poly(ethylene glycol) methyl ether methacrylate-ran-vinyl dimethyl azlactone-ran-glycidyl methacrylate) [P(PEGMEMA-r-VDM-r-GMA); PVG]-to the surface of commercially available polystyrene and glass microcarriers to create chemically defined surfaces for large-scale cell expansion is applied. These chemically defined microcarriers create a reproducible surface that does not rely on the adsorption of xenogenic serum proteins to mediate cell adhesion. Specifically, this coating method anchors PVG copolymer through ring opening nucleophilic attack by amine residues on poly-l-lysine that is pre-adsorbed to the surface of microcarriers. Importantly, this anchoring reaction preserves the monomer VDM reactivity for subsequent functionalization with an integrin-specific Arg-Gly-Asp peptide to enable cell adhesion and expansion via a one-step reaction in aqueous media. MSCs cultured on PVG-coated microcarriers achieve sixfold expansion-similar to the expansion achieved on PS microcarriers-and retain their ability to differentiate after harvesting.
Collapse
Affiliation(s)
- John D Krutty
- Department of Biomedical Engineering, University of Wisconsin-Madison, 1550 Engineering Dr., 53706, USA
| | - Andrew D Dias
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 1685 Highland Ave., 53705, USA
| | - Junsu Yun
- Department of Materials Science and Engineering, University of Wisconsin-Madison, 1509 University Ave., 53706, USA
| | - William L Murphy
- Department of Biomedical Engineering, University of Wisconsin-Madison, 1550 Engineering Dr., 53706, USA.,Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 1685 Highland Ave., 53705, USA.,Department of Materials Science and Engineering, University of Wisconsin-Madison, 1509 University Ave., 53706, USA
| | - Padma Gopalan
- Department of Biomedical Engineering, University of Wisconsin-Madison, 1550 Engineering Dr., 53706, USA.,Department of Materials Science and Engineering, University of Wisconsin-Madison, 1509 University Ave., 53706, USA.,Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., 53706, USA
| |
Collapse
|
13
|
Lee H, An S, Kim S, Jeon B, Kim M, Kim IS. Readily Functionalizable and Stabilizable Polymeric Particles with Controlled Size and Morphology by Electrospray. Sci Rep 2018; 8:15725. [PMID: 30356115 PMCID: PMC6200772 DOI: 10.1038/s41598-018-34124-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 10/10/2018] [Indexed: 11/09/2022] Open
Abstract
Electrospraying is an effective and facile technique for the production of micro- or nanoparticles with tailored sizes, shapes, morphologies, and microstructures. We synthesized functionalizable poly(styrene-random-glycidyl methacrylate) copolymers and used them to fabricate microparticles via the electrospray technique. The sizes and morphologies of the electrosprayed particles are controlled by altering the process parameters (feed rate and applied voltage), and the composition and thermodynamic properties of the polymer (i.e., compatibility of the polymer with the solvent). We further investigated modifying the surfaces of the electrosprayed particles with 3-mercaptopropionic acid by a simple and efficient thiol-epoxy "click" reaction as a proof-of-concept demonstration that desired functionality can be introduced onto the surfaces of these particles; the outcome was confirmed by various spectroscopic techniques. In addition, the epoxides within the particles easily undergo crosslinking reactions, enabling further effective particle stabilization. The results reveal that the structure and properties of the polymer can be used to fine-tune the structural parameters of the electrosprayed particles, such as their sizes and morphologies, which opens up the possibility of imparting a variety of desired chemical functionalities into the structures of stable organic materials via post-electrospray modification processes.
Collapse
Affiliation(s)
- Hoik Lee
- Nano Fusion Technology Research Group, Division of Frontier Fibers, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Tokida 3-15-1, Ueda, Nagano, 386-8567, Japan
| | - Sol An
- Department of Chemistry and Chemical Engineering, Inha University, Incheon, 22212, Korea
| | - Sukjoo Kim
- Nano Fusion Technology Research Group, Division of Frontier Fibers, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Tokida 3-15-1, Ueda, Nagano, 386-8567, Japan
| | - Bokyoung Jeon
- Department of Chemistry and Chemical Engineering, Inha University, Incheon, 22212, Korea
| | - Myungwoong Kim
- Department of Chemistry and Chemical Engineering, Inha University, Incheon, 22212, Korea.
| | - Ick Soo Kim
- Nano Fusion Technology Research Group, Division of Frontier Fibers, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Tokida 3-15-1, Ueda, Nagano, 386-8567, Japan.
| |
Collapse
|
14
|
Ozcelik B, Ho KKK, Glattauer V, Willcox M, Kumar N, Thissen H. Poly(ethylene glycol)-Based Coatings Combining Low-Biofouling and Quorum-Sensing Inhibiting Properties to Reduce Bacterial Colonization. ACS Biomater Sci Eng 2016; 3:78-87. [DOI: 10.1021/acsbiomaterials.6b00579] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Berkay Ozcelik
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Clayton, Victoria 3168, Australia
| | | | - Veronica Glattauer
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Clayton, Victoria 3168, Australia
| | | | | | - Helmut Thissen
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Clayton, Victoria 3168, Australia
| |
Collapse
|
15
|
Ozcelik B, Chen R, Glattauer V, Kumar N, Willcox M, Thissen H. Crosslinked Platform Coatings Incorporating Bioactive Signals for the Control of Biointerfacial Interactions. Macromol Biosci 2016; 17. [DOI: 10.1002/mabi.201600315] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 09/01/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Berkay Ozcelik
- Commonwealth Scientific and Industrial Research Organisation (CSIRO); Clayton VIC 3168 Australia
| | - Renxun Chen
- School of Chemistry; University of New South Wales; Sydney NSW 2052 Australia
| | - Veronica Glattauer
- Commonwealth Scientific and Industrial Research Organisation (CSIRO); Clayton VIC 3168 Australia
| | - Naresh Kumar
- School of Chemistry; University of New South Wales; Sydney NSW 2052 Australia
| | - MarkD.P. Willcox
- School of Optometry and Vision Science; University of New South Wales; Sydney NSW 2052 Australia
| | - Helmut Thissen
- Commonwealth Scientific and Industrial Research Organisation (CSIRO); Clayton VIC 3168 Australia
| |
Collapse
|
16
|
Krutty JD, Schmitt SK, Gopalan P, Murphy WL. Surface functionalization and dynamics of polymeric cell culture substrates. Curr Opin Biotechnol 2016; 40:164-169. [PMID: 27314835 PMCID: PMC6893855 DOI: 10.1016/j.copbio.2016.05.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 05/12/2016] [Accepted: 05/23/2016] [Indexed: 12/15/2022]
Abstract
The promise of growing tissues to replace or improve the function of failing ones, a practice often referred to as regenerative medicine, has been driven in recent years by the development of stem cells and cell lines. Stem cells are typically cultured outside the body to increase cell number or differentiate the cells into mature cell types. In order to maximize the regenerative potential of these cells, there is a need to understand cell-material interactions that direct cell behavior and cell-material dynamics. Most synthetic surfaces used for growth and differentiation of cells in the lab are impractical and cost prohibitive in clinical labs. This review focuses on the modification of low cost polymer substrates that are already widely used for cell culture so that they may be used to control and understand cell-material interactions. In addition, we discuss the ability of cells to exert dynamic control over the microenvironment leading to a more complex, less controlled surface.
Collapse
Affiliation(s)
- John D Krutty
- Department of Biomedical Engineering, University of Wisconsin-Madison, 53706, USA
| | - Samantha K Schmitt
- Department of Materials Science and Engineering, University of Wisconsin-Madison, 53706, USA
| | - Padma Gopalan
- Department of Materials Science and Engineering, University of Wisconsin-Madison, 53706, USA; Department of Chemistry, University of Wisconsin-Madison, 53706, USA
| | - William L Murphy
- Department of Biomedical Engineering, University of Wisconsin-Madison, 53706, USA; Department of Materials Science and Engineering, University of Wisconsin-Madison, 53706, USA; Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 53706, USA.
| |
Collapse
|
17
|
Le NNT, Zorn S, Schmitt SK, Gopalan P, Murphy WL. Hydrogel arrays formed via differential wettability patterning enable combinatorial screening of stem cell behavior. Acta Biomater 2016; 34:93-103. [PMID: 26386315 PMCID: PMC4794413 DOI: 10.1016/j.actbio.2015.09.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 09/03/2015] [Accepted: 09/15/2015] [Indexed: 01/12/2023]
Abstract
Here, we have developed a novel method for forming hydrogel arrays using surfaces patterned with differential wettability. Our method for benchtop array formation is suitable for enhanced-throughput, combinatorial screening of biochemical and biophysical cues from chemically defined cell culture substrates. We demonstrated the ability to generate these arrays without the need for liquid handling systems and screened the combinatorial effects of substrate stiffness and immobilized cell adhesion peptide concentration on human mesenchymal stem cell (hMSC) behavior during short-term 2-dimensional cell culture. Regardless of substrate stiffness, hMSC initial cell attachment, spreading, and proliferation were linearly correlated with immobilized CRGDS peptide concentration. Increasing substrate stiffness also resulted in increased hMSC initial cell attachment, spreading, and proliferation; however, examination of the combinatorial effects of CRGDS peptide concentration and substrate stiffness revealed potential interplay between these distinct substrate signals. Maximal hMSC proliferation seen on substrates with either high stiffness or high CRGDS peptide concentration suggests that some baseline level of cytoskeletal tension was required for hMSC proliferation on hydrogel substrates and that multiple substrate signals could be engineered to work in synergy to promote mechanosensing and regulate cell behavior. STATEMENT OF SIGNIFICANCE Our novel array formation method using surfaces patterned with differential wettability offers the advantages of benchtop array formation for 2-dimensional cell cultures and enhanced-throughput screening without the need for liquid handling systems. Hydrogel arrays formed via our method are suitable for screening the influence of chemical (e.g. cell adhesive ligands) and physical (stiffness, size, shape, and thickness) substrate properties on stem cell behavior. The arrays are also fully compatible with commercially available micro-array add-on systems, which allows for simultaneous control of the insoluble and soluble cell culture environment. This study used hydrogel arrays to demonstrate that synergy between cell adhesion and mechanosensing can be used to regulate hMSC behavior.
Collapse
Affiliation(s)
- Ngoc Nhi T Le
- Materials Science Program, University of Wisconsin-Madison, Madison, WI, USA
| | - Stefan Zorn
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Samantha K Schmitt
- Materials Science Program, University of Wisconsin-Madison, Madison, WI, USA
| | - Padma Gopalan
- Materials Science Program, University of Wisconsin-Madison, Madison, WI, USA; Department of Material Science and Engineering, University of Wisconsin-Madison, Madison, WI, USA; Department of Chemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - William L Murphy
- Materials Science Program, University of Wisconsin-Madison, Madison, WI, USA; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA; Department of Material Science and Engineering, University of Wisconsin-Madison, Madison, WI, USA; Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, USA.
| |
Collapse
|
18
|
Schmitt SK, Trebatoski DJ, Krutty JD, Xie AW, Rollins B, Murphy WL, Gopalan P. Peptide Conjugation to a Polymer Coating via Native Chemical Ligation of Azlactones for Cell Culture. Biomacromolecules 2016; 17:1040-7. [PMID: 26835552 PMCID: PMC5172394 DOI: 10.1021/acs.biomac.5b01682] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Conjugation of biomolecules for stable presentation is an essential step toward reliable chemically defined platforms for cell culture studies. In this work, we describe the formation of a stable and site-specific amide bond via the coupling of a cysteine terminated peptide at low concentration to an azlactone containing copolymer coating. A copolymer of polyethylene glycol methyl ether methacrylate-ran-vinyl azlactone-ran-glycidyl methacrylate P(PEGMEMA-r-VDM-r-GMA) was used to form a thin coating (20-30 nm) on silicon and polycarbonate substrates. The formation and stability of coating-peptide bonds for peptides containing free thiols and amines were quantified by X-ray photoelectron spectroscopy (XPS) after exposure to cell culture conditions. Peptides containing a thiol as the only nucleophile coupled via a thioester bond; however, the bond was labile under cell culture conditions and almost all the bound peptides were displaced from the surface over a period of 2 days. Coupling with N-terminal primary amine peptides resulted in the formation of an amide bond with low efficiency (<20%). In contrast, peptides containing an N-terminal cysteine, which contain both nucleophiles (free thiol and amine) in close proximity, bound with 67% efficiency under neutral pH, and were stable under the same conditions for 2 weeks. Control studies confirm that the stable amide formation was a result of an intramolecular rearrangement through a N-acyl intermediate that resembles native chemical ligation. Through a combination of XPS and cell culture studies, we show that the cysteine terminated peptides undergo a native chemical ligation process at low peptide concentration in aqueous media, short reaction time, and at room temperature resulting in the stable presentation of peptides beyond 2 weeks for cell culture studies.
Collapse
Affiliation(s)
- Samantha K. Schmitt
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - David J. Trebatoski
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - John D. Krutty
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Angela W. Xie
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Benjamin Rollins
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - William L. Murphy
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Padma Gopalan
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| |
Collapse
|
19
|
Mukherjee S, Mukherjee A, Bhagi-Damodaran A, Mukherjee M, Lu Y, Dey A. A biosynthetic model of cytochrome c oxidase as an electrocatalyst for oxygen reduction. Nat Commun 2015; 6:8467. [PMID: 26455726 PMCID: PMC4633646 DOI: 10.1038/ncomms9467] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 08/24/2015] [Indexed: 12/30/2022] Open
Abstract
Creating an artificial functional mimic of the mitochondrial enzyme cytochrome c oxidase (CcO) has been a long-term goal of the scientific community as such a mimic will not only add to our fundamental understanding of how CcO works but may also pave the way for efficient electrocatalysts for oxygen reduction in hydrogen/oxygen fuel cells. Here we develop an electrocatalyst for reducing oxygen to water under ambient conditions. We use site-directed mutants of myoglobin, where both the distal Cu and the redox-active tyrosine residue present in CcO are modelled. In situ Raman spectroscopy shows that this catalyst features very fast electron transfer rates, facile oxygen binding and O-O bond lysis. An electron transfer shunt from the electrode circumvents the slow dissociation of a ferric hydroxide species, which slows down native CcO (bovine 500 s(-1)), allowing electrocatalytic oxygen reduction rates of 5,000 s(-1) for these biosynthetic models.
Collapse
Affiliation(s)
- Sohini Mukherjee
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A&2B Raja SC Mullick Road, Jadavpur Kolkata 700032, India
| | - Arnab Mukherjee
- Department of Chemistry, University of Illinois at Urbana-Champaign, Champaign, Illinois 61801, USA
| | - Ambika Bhagi-Damodaran
- Department of Chemistry, University of Illinois at Urbana-Champaign, Champaign, Illinois 61801, USA
| | - Manjistha Mukherjee
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A&2B Raja SC Mullick Road, Jadavpur Kolkata 700032, India
| | - Yi Lu
- Department of Chemistry, University of Illinois at Urbana-Champaign, Champaign, Illinois 61801, USA
| | - Abhishek Dey
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A&2B Raja SC Mullick Road, Jadavpur Kolkata 700032, India
| |
Collapse
|
20
|
From Self-Assembled Monolayers to Coatings: Advances in the Synthesis and Nanobio Applications of Polymer Brushes. Polymers (Basel) 2015. [DOI: 10.3390/polym7071346] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
|
21
|
Schmitt SK, Xie AW, Ghassemi RM, Trebatoski DJ, Murphy WL, Gopalan P. Polyethylene Glycol Coatings on Plastic Substrates for Chemically Defined Stem Cell Culture. Adv Healthc Mater 2015; 4:1555-64. [PMID: 25995154 PMCID: PMC5172397 DOI: 10.1002/adhm.201500191] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 04/26/2015] [Indexed: 01/13/2023]
Abstract
Human mesenchymal stem cells (hMSCs) are a widely available and clinically relevant cell type with a host of applications in regenerative medicine. Current clinical expansion methods can lead to selective changes in hMSC phenotype potentially resulting from relatively undefined cell culture surfaces. Chemically defined synthetic surfaces can aid in understanding the influence of cell-material interactions on stem cell behavior. Here, a thin copolymer coating for hMSC culture on plastic substrates is developed. The random copolymer is synthesized by living free radical polymerization and characterized in solution before application to the substrate, ensuring a homogeneous coating and limiting the sample-to-sample variations. The ability to coat multiple substrate types and cover large surface areas is reported. Arg-Gly-Asp-containing peptides are incorporated into the coating under aqueous conditions via their lysine or cysteine side chains, resulting in amide and thioester linkages, respectively. Stability studies show amide linkages to be stable and thioester linkages to be labile under standard serum-containing culture conditions. In addition, chemically defined passaging of hMSCs using only ethylenediaminetetraacetic acid on polystyrene dishes is shown. After passage, the hMSCs can be seeded back onto the same plate, indicating potential reusability of the coating.
Collapse
Affiliation(s)
- Samantha K Schmitt
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Angela W Xie
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Raha M Ghassemi
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - David J Trebatoski
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - William L Murphy
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Padma Gopalan
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| |
Collapse
|
22
|
Chen X, Shang H, Cao S, Tan H, Li J. A zwitterionic surface with general cell-adhesive and protein-resistant properties. RSC Adv 2015. [DOI: 10.1039/c5ra16883j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A choline phosphate functionalized surface is proved to have general cell-adhesive and protein-resistant properties, which give it potential for biomaterials.
Collapse
Affiliation(s)
- Xingyu Chen
- College of Polymer Science and Engineering
- Sichuan University
- China
| | - Hui Shang
- College of Polymer Science and Engineering
- Sichuan University
- China
| | - Shuqin Cao
- College of Polymer Science and Engineering
- Sichuan University
- China
| | - Hong Tan
- College of Polymer Science and Engineering
- Sichuan University
- China
| | - Jianshu Li
- College of Polymer Science and Engineering
- Sichuan University
- China
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
| |
Collapse
|
23
|
Chen C, Xu P, Li X. Regioselective patterning of multiple SAMs and applications in surface-guided smart microfluidics. ACS APPLIED MATERIALS & INTERFACES 2014; 6:21961-21969. [PMID: 25438296 DOI: 10.1021/am508120s] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A top-down nanofabrication technology is developed to integrate multiple SAMs (self-assembled monolayers) into regioselective patterns. With ultraviolet light exposure through regioselectively hollowed hard mask, an existing SAM at designated microregions can be removed and a dissimilar kind of SAM can be regrown there. By repeating the photolithography-like process cycle, diverse kinds of SAM building blocks can be laid out as a desired pattern in one microfluidic channel. In order to ensure high quality of the surface modifications, the SAMs are vapor-phase deposited before the channel is closed by a bonding process. For the first time the technique makes it possible to integrate three or more kinds of SAMs in one microchannel. The technique is very useful for multiplex surface functionalization of microfluidic chips where different segments of a microfluidic channel need to be individually modified with different SAMs or into arrayed pattern for surface-guided fluidic properties like hydrophobicity/philicity and/or oleophobicity/philicity, etc. The technique has been well validated by experimental demonstration of various surface-directed flow-guiding functions. By modifying a microchannel surface into an arrayed pattern of multi-SAM "two-tone" stripe array, surface-guiding-induced 3D swirling flow is generated in a microfluidic channel that experimentally exhibits quick oil/water mixing and high-efficiency oil-to-water chemical extraction.
Collapse
Affiliation(s)
- Chuanzhao Chen
- State Key Lab of Transducer Technology, and, Science Technology on Micro-system Lab, Shanghai Institute of Micro-system and Information Technology, Chinese Academy of Sciences , 865 Changning Road, Shanghai 200050, China
| | | | | |
Collapse
|
24
|
Kim BR, Nguyen TBL, Min YK, Lee BT. In vitro and in vivo studies of BMP-2-loaded PCL-gelatin-BCP electrospun scaffolds. Tissue Eng Part A 2014; 20:3279-89. [PMID: 24935525 PMCID: PMC4259169 DOI: 10.1089/ten.tea.2014.0081] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 05/28/2014] [Indexed: 01/06/2023] Open
Abstract
To confirm the effect of recombinant human bone morphogenetic protein-2 (BMP-2) for bone regeneration, BMP-2-loaded polycaprolactone (PCL)-gelatin (Gel)-biphasic calcium phosphate (BCP) fibrous scaffolds were fabricated using the electrospinning method. The electrospinning process to incorporate BCP nanoparticles into the PCL-Gel scaffolds yielded an extracellular matrix-like microstructure that was a hybrid system composed of nano- and micro-sized fibers. BMP-2 was homogeneously loaded on the PCL-Gel-BCP scaffolds for enhanced induction of bone growth. BMP-2 was initially released at high levels, and then showed sustained release behavior for 31 days. Compared with the PCL-Gel-BCP scaffold, the BMP-2-loaded PCL-Gel-BCP scaffold showed improved cell proliferation and cell adhesion behavior. Both scaffold types were implanted in rat skull defects for 4 and 8 weeks to evaluate the biological response under physiological conditions. Remarkable bone regeneration was observed in the BMP-2/PCL-Gel-BCP group. These results suggest that BMP-2-loaded PCL-Gel-BCP scaffolds should be considered for potential bone tissue engineering applications.
Collapse
Affiliation(s)
- Bo-Ram Kim
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - Thuy Ba Linh Nguyen
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
- Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - Young-Ki Min
- Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
- Department of Physiology, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - Byong-Taek Lee
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
- Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| |
Collapse
|
25
|
Bai L, Tan L, Chen L, Liu S, Wang Y. Preparation and characterizations of poly(2-methyl-2-oxazoline) based antifouling coating by thermally induced immobilization. J Mater Chem B 2014; 2:7785-7794. [DOI: 10.1039/c4tb01383b] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Poly[(2-methyl-2-oxazoline)-random-glycidylmethacrylate] was immobilized on a silicon/glass surface via a simple annealing procedure to obtain a covalent and cross-linked antifouling coating.
Collapse
Affiliation(s)
- Longchao Bai
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026, P. R. China
| | - Lin Tan
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026, P. R. China
| | - Lijuan Chen
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026, P. R. China
| | - Songtao Liu
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026, P. R. China
| | - Yanmei Wang
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026, P. R. China
| |
Collapse
|
26
|
Sweat DP, Kim M, Yu X, Gopalan P. A single-component inimer containing cross-linkable ultrathin polymer coating for dense polymer brush growth. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:3805-3812. [PMID: 23425347 DOI: 10.1021/la305060z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We have developed a highly versatile universal approach to grow polymer brushes from a variety of substrates with high grafting density by using a single-component system. We describe a random copolymer which consists of an inimer, p-(2-bromoisobutyloylmethyl)styrene (BiBMS), copolymerized with glycidyl methacrylate (GMA) synthesized by reversible addition-fragmentation chain-transfer (RAFT) polymerization. Thermal cross-linking created a mat that was stable during long exposure in organic solvent even with sonication or during Soxhlet extraction. The absolute bromine density was determined via X-ray photoelectron spectroscopy (XPS) to be 1.86 ± 0.12 Br atoms/nm(3). The ratio of experimental density to calculated absolute initiator density suggests that ~25% of the bromine is lost during cross-linking. Surface-initiated ATRP (SI-ATRP) was used to grow PMMA brushes on the substrate with sacrificial initiator in solution. The brushes were characterized by ellipsometry, XPS, and atomic force microscopy (AFM) to determine thickness, composition, and homogeneity. By correlating the molecular weight of polymer grown in solution with the brush layer thickness, a high grafting density of 0.80 ± 0.06 chains/nm(2) was calculated. By synthesizing the copolymer before cross-linking on the substrate, this single-component approach avoids any issues with blend miscibility as might be present for a multicomponent curable mixture, while resulting in high chain density on a range of substrates.
Collapse
Affiliation(s)
- Daniel P Sweat
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, USA
| | | | | | | |
Collapse
|
27
|
Bandyopadhyay S, Mukherjee S, Dey A. Modular synthesis, spectroscopic characterization and in situ functionalization using “click” chemistry of azide terminated amide containing self-assembled monolayers. RSC Adv 2013. [DOI: 10.1039/c3ra43415j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|