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Inoue Y, Kim Y, Hasegawa H, Yoshida Y, Sakakibara K, Tsujii Y. A novel electrochemical biosensing method with double-layered polymer brush modified electrode. Colloids Surf B Biointerfaces 2023; 222:113105. [PMID: 36566689 DOI: 10.1016/j.colsurfb.2022.113105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/02/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022]
Abstract
We developed a novel electrochemical biosensor electrode that has a potential to reduce background noise for which we constructed an original conductive substrate modified with a double-layered polymer brush structure that is water impermeable and can control biomolecules adsorption/desorption. In this study, a hydrophobic poly(tert-butyl methacrylate) brush layer was prepared on a gold electrode, and then, the tert-butyl group near the outermost surface was dissociated by the acid treatment to obtain a hydrophilic carboxy group, thereby fabricating a conductive substrate with the double-layered polymer brush structure. Formation of the double-layered polymer brush structure was indicated by surface wettability and optical analyses. The potential difference and hydrogen ion concentration, which is a typical parameter of the surrounding environment, were linearly correlated with the gold electrode having a double-layered polymer brush structure with carboxyl groups. However, there was no correlation on gold electrodes with self-assembled monolayers presenting carboxy groups. It is considered that the pH responsiveness of the carboxy groups on the outermost surface could be exhibited remarkably because the charge state in the vicinity of the surface became constant due to the hydrophobic polymer brush layer having a certain thickness. The target DNA could be captured more efficiently at the probe DNA-immobilized electrode with the double-layered polymer brush structure than when using COOH-SAM. This is the first report of the application of the double-layered polymer brush structure for the electrochemical biosensing, and it will be an excellent surface modification method to reduce background noise.
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Affiliation(s)
- Yuuki Inoue
- LG Japan Lab Inc., LG Yokohama Innovation Center 7F, 1-2-13, Takashima, Nishi-ku, Yokohama-shi, Kanagawa 220-0011, Japan.
| | - Yeji Kim
- LG Japan Lab Inc., LG Yokohama Innovation Center 7F, 1-2-13, Takashima, Nishi-ku, Yokohama-shi, Kanagawa 220-0011, Japan
| | - Hijiri Hasegawa
- LG Japan Lab Inc., LG Yokohama Innovation Center 7F, 1-2-13, Takashima, Nishi-ku, Yokohama-shi, Kanagawa 220-0011, Japan
| | - Yasukazu Yoshida
- LG Japan Lab Inc., LG Yokohama Innovation Center 7F, 1-2-13, Takashima, Nishi-ku, Yokohama-shi, Kanagawa 220-0011, Japan
| | - Keita Sakakibara
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Yoshinobu Tsujii
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan.
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2
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Dhingra S, Gaur V, Bhattacharya J, Saha S. Photoinduced micropatterning on biodegradable aliphatic polyester surfaces for anchoring dual brushes and its application in bacteria and cell patterning. J Mater Chem B 2022; 11:83-98. [PMID: 36226487 DOI: 10.1039/d2tb01477g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
In view of intrinsic challenges encountered in surface patterning on actual biomaterials such as the ones based on biodegradable polymers, we have demonstrated an innovative strategy to create micro-patterns on the surface of tartaric acid based aliphatic polyester P (poly(hexamethylene 2,3-O-isoprpylidentartarate)) without significant loss of its molecular weight. Around 10 wt% PAG (photoacid generator, 2-(4-methoxystyryl)-4,6-bis(trichloromethyl)-1,3,5-triazine) was purposefully encapsulated in a polyester matrix comprising of P and PLA (polylactide) at a ratio of 5 : 95. With the help of a photomask, selective areas of the matrix were exposed to UV radiation at 395 nm for 25 min to trigger the acid release from PAG entrapped unmasked areas for generating hydroxyl functionality that was later converted to an ATRP (atom transfer radical polymerization) initiating moiety on the irradiated domain of P. In subsequent steps, spatio-selective surface modification by surface initiated ATRP was carried out to generate an alternate pattern of polyPEGMA (poly(ethylene glycol)methyl ether methacrylate) and polyDMAPS (poly(3-dimethyl-(methacryloyloxyethyl)ammonium propane sulfonate)) brushes on the matrix. The patterned surface modified with dual brushes was found to be antifouling in nature (rejection of >97% of proteins). Strikingly, an alternate pattern of live bacterial cells (E. coli and S. aureus) was evident and a relatively high population of bacteria was found on the polyPEGMA brush modified domain. However, a complete reverse pattern was visible in the case of L929 mouse fibroblast cells, i.e., cells were found to predominantly adhere to and proliferate on the zwitterionic brush modified surface. An attempt was made to discuss a plausible mechanism of selective cell adhesion on the zwitterionic brush domain. This novel strategy employed on the biodegradable polymer surface provides an easy and straightforward way to micro-pattern various cells, bacteria, etc. on biodegradable substrates which hold great potential to function as biochips, diagnostics, bacteria/cell microarrays, etc.
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Affiliation(s)
- Shaifali Dhingra
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, India.
| | - Vidit Gaur
- Centre for Biomedical Engineering, Indian Institute of Technology Delhi, India
| | | | - Sampa Saha
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, India.
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3
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Martínez-Miguel M, Castellote-Borrell M, Köber M, Kyvik AR, Tomsen-Melero J, Vargas-Nadal G, Muñoz J, Pulido D, Cristóbal-Lecina E, Passemard S, Royo M, Mas-Torrent M, Veciana J, Giannotti MI, Guasch J, Ventosa N, Ratera I. Hierarchical Quatsome-RGD Nanoarchitectonic Surfaces for Enhanced Integrin-Mediated Cell Adhesion. ACS APPLIED MATERIALS & INTERFACES 2022; 14:48179-48193. [PMID: 36251059 PMCID: PMC9614722 DOI: 10.1021/acsami.2c10497] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
The synthesis and study of the tripeptide Arg-Gly-Asp (RGD), the binding site of different extracellular matrix proteins, e.g., fibronectin and vitronectin, has allowed the production of a wide range of cell adhesive surfaces. Although the surface density and spacing of the RGD peptide at the nanoscale have already shown a significant influence on cell adhesion, the impact of its hierarchical nanostructure is still rather unexplored. Accordingly, a versatile colloidal system named quatsomes, based on fluid nanovesicles formed by the self-assembling of cholesterol and surfactant molecules, has been devised as a novel template to achieve hierarchical nanostructures of the RGD peptide. To this end, RGD was anchored on the vesicle's fluid membrane of quatsomes, and the RGD-functionalized nanovesicles were covalently anchored to planar gold surfaces, forming a state of quasi-suspension, through a long poly(ethylene glycol) (PEG) chain with a thiol termination. An underlying self-assembled monolayer (SAM) of a shorter PEG was introduced for vesicle stabilization and to avoid unspecific cell adhesion. In comparison with substrates featuring a homogeneous distribution of RGD peptides, the resulting hierarchical nanoarchitectonic dramatically enhanced cell adhesion, despite lower overall RGD molecules on the surface. The new versatile platform was thoroughly characterized using a multitechnique approach, proving its enhanced performance. These findings open new methods for the hierarchical immobilization of biomolecules on surfaces using quatsomes as a robust and novel tissue engineering strategy.
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Affiliation(s)
- Marc Martínez-Miguel
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra 08193, Spain
- Biomedical
Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
| | | | - Mariana Köber
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra 08193, Spain
- Biomedical
Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
| | - Adriana R. Kyvik
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra 08193, Spain
- Biomedical
Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
| | - Judit Tomsen-Melero
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra 08193, Spain
- Biomedical
Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
| | - Guillem Vargas-Nadal
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra 08193, Spain
| | - Jose Muñoz
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra 08193, Spain
| | - Daniel Pulido
- Biomedical
Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
- Unidad
de Péptidos, UB, Unidad asociada
al CSIC por el IQAC, Barcelona 08028, Spain
| | - Edgar Cristóbal-Lecina
- Biomedical
Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
- Unidad
de Péptidos, UB, Unidad asociada
al CSIC por el IQAC, Barcelona 08028, Spain
| | - Solène Passemard
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra 08193, Spain
| | - Miriam Royo
- Biomedical
Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
- Institut
de Química Avançada de Catalunya (IQAC−CSIC), Barcelona 08034, Spain
| | - Marta Mas-Torrent
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra 08193, Spain
- Biomedical
Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
| | - Jaume Veciana
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra 08193, Spain
- Biomedical
Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
| | - Marina I. Giannotti
- Biomedical
Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
- Nanoprobes
and Nanoswitches group, Institute for Bioengineering of Catalonia
(IBEC), The Barcelona Institute of Science
and Technology (BIST), Barcelona 08028, Spain
- Departament
de Ciència dels Materials i Química Física, Universitat de Barcelona, Barcelona 08028, Spain
| | - Judith Guasch
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra 08193, Spain
- Biomedical
Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
- Dynamic Biomimetics
for Cancer Immunotherapy, Max Planck Partner
Group, ICMAB-CSIC, Campus UAB, Bellaterra 08193, Spain
| | - Nora Ventosa
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra 08193, Spain
- Biomedical
Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
| | - Imma Ratera
- Institut
de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra 08193, Spain
- Biomedical
Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
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Ishihara K, Fukazawa K. Cell-membrane-inspired polymers for constructing biointerfaces with efficient molecular recognition. J Mater Chem B 2022; 10:3397-3419. [PMID: 35389394 DOI: 10.1039/d2tb00242f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Fabrication of devices that accurately recognize, detect, and separate target molecules from mixtures is a crucial aspect of biotechnology for applications in medical, pharmaceutical, and food sciences. This technology has also been recently applied in solving environmental and energy-related problems. In molecular recognition, biomolecules are typically complexed with a substrate, and specific molecules from a mixture are recognized, captured, and reacted. To increase sensitivity and efficiency, the activity of the biomolecules used for capture should be maintained, and non-specific reactions on the surface should be prevented. This review summarizes polymeric materials that are used for constructing biointerfaces. Precise molecular recognition occurring at the surface of cell membranes is fundamental to sustaining life; therefore, materials that mimic the structure and properties of this particular surface are emphasized in this article. The requirements for biointerfaces to eliminate nonspecific interactions of biomolecules are described. In particular, the major issue of protein adsorption on biointerfaces is discussed by focusing on the structure of water near the interface from a thermodynamic viewpoint; moreover, the structure of polymer molecules that control the water structure is considered. Methodologies enabling stable formation of these interfaces on material surfaces are also presented.
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Affiliation(s)
- Kazuhiko Ishihara
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| | - Kyoko Fukazawa
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
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5
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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.
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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
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6
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Kim Y, Inoue Y, Hasegawa H, Yoshida Y, Sakata T. In Situ Electrical Monitoring of Methylated DNA Based on Its Conformational Change to G-Quadruplex Using a Solution-Gated Field-Effect Transistor. Anal Chem 2021; 93:16709-16717. [PMID: 34859677 DOI: 10.1021/acs.analchem.1c04466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Methylated DNA is not only a diagnostic but also a prognostic biomarker for early-stage cancer. However, sodium bisulfite sequencing as a "gold standard" method for detection of methylation markers has some drawbacks such as its time-consuming and labor-intensive procedures. Therefore, simple and reliable methods are required to analyze DNA sequences with or without methylated residues. Herein, we propose a simple and direct method for detecting DNA methylation through its conformation transition to G-quadruplex using a solution-gated field-effect transistor (SG-FET) without using labeled materials. The BCL-2 gene, which is involved in the development of various human tumors, contains G-rich segments and undergoes a conformational change to G-quadruplex depending on the K+ concentration. Stacked G-quadruplex strands move close to the SG-FET sensor surface, resulting in large electrical signals based on intrinsic molecular charges. In addition, a dense hydrophilic polymer brush is grafted using surface-initiated atom transfer radical polymerization onto the SG-FET sensor surface to reduce electrical noise based on nonspecific adsorption of interfering species. In particular, control of the polymer brush thickness induces electrical signals based on DNA molecular charges in the diffusion layer, according to the Debye length limit. A platform based on the SG-FET sensor with a well-defined polymer brush is suitable for in situ monitoring of methylated DNA and realizes a point-of-care device with a high signal-to-noise ratio and without the requirement for additional processes such as bisulfite conversion and polymerase chain reaction.
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Affiliation(s)
- Yeji Kim
- Advanced Technology Research Dept., LG Japan Lab Inc., Glass Cube Shinagawa, 4-13-14 Higashi Shinagawa, Shinagawa-ku, Tokyo 140-0002, Japan
| | - Yuuki Inoue
- Advanced Technology Research Dept., LG Japan Lab Inc., Glass Cube Shinagawa, 4-13-14 Higashi Shinagawa, Shinagawa-ku, Tokyo 140-0002, Japan
| | - Hijiri Hasegawa
- Advanced Technology Research Dept., LG Japan Lab Inc., Glass Cube Shinagawa, 4-13-14 Higashi Shinagawa, Shinagawa-ku, Tokyo 140-0002, Japan
| | | | - Toshiya Sakata
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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7
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Anthi J, Kolivoška V, Holubová B, Vaisocherová-Lísalová H. Probing polymer brushes with electrochemical impedance spectroscopy: a mini review. Biomater Sci 2021; 9:7379-7391. [PMID: 34693954 DOI: 10.1039/d1bm01330k] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Polymer brushes are frequently used as surface-tethered antifouling layers in biosensors to improve sensor surface-analyte recognition in the presence of abundant non-target molecules in complex biological samples by suppressing nonspecific interactions. However, because brushes are complex systems highly responsive to changes in their surrounding environment, studying their properties remains a challenge. Electrochemical impedance spectroscopy (EIS) is an emerging method in this context. In this mini review, we aim to elucidate the potential of EIS for investigating the physicochemical properties and structural aspects of polymer brushes. The application of EIS in brush-based biosensors is also discussed. Most common principles employed in these biosensors are presented, as well as interpretation of EIS data obtained in such setups. Overall, we demonstrate that the EIS-polymer brush pairing has a considerable potential for providing new insights into brush functionalities and designing highly sensitive and specific biosensors.
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Affiliation(s)
- Judita Anthi
- Institute of Physics of the CAS, Na Slovance 2, 182 21 Prague, Czech Republic. .,Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 3, 16628 Prague, Czech Republic
| | - Viliam Kolivoška
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3, 182 23 Prague, Czech Republic.
| | - Barbora Holubová
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 3, 16628 Prague, Czech Republic
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8
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The impact of antifouling layers in fabricating bioactive surfaces. Acta Biomater 2021; 126:45-62. [PMID: 33727195 DOI: 10.1016/j.actbio.2021.03.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 02/18/2021] [Accepted: 03/09/2021] [Indexed: 12/18/2022]
Abstract
Bioactive surfaces modified with functional peptides are critical for both fundamental research and practical application of implant materials and tissue repair. However, when bioactive molecules are tethered on biomaterial surfaces, their functions can be compromised due to unwanted fouling (mainly nonspecific protein adsorption and cell adhesion). In recent years, researchers have continuously studied antifouling strategies to obtain low background noise and effectively present the function of bioactive molecules. In this review, we describe several commonly used antifouling strategies and analyzed their advantages and drawbacks. Among these strategies, antifouling molecules are widely used to construct the antifouling layer of various bioactive surfaces. Subsequently, we summarize various structures of antifouling molecules and their surface grafting methods and characteristics. Application of these functionalized surfaces in microarray, biosensors, and implants are also introduced. Finally, we discuss the primary challenges associated with antifouling layers in fabricating bioactive surfaces and provide prospects for the future development of this field. STATEMENT OF SIGNIFICANCE: The nonspecific protein adsorption and cell adhesion will cause unwanted background "noise" on the surface of biological materials and detecting devices and compromise the performance of functional molecules and, therefore, impair the performance of materials and the sensitivity of devices. In addition, the selection of antifouling surfaces with proper chain length and high grafting density is also of great importance and requires further studies. Otherwise, the surface-tethered bioactive molecules may not function in their optimal status or even fail to display their functions. Based on these two critical issues, we summarize antifouling molecules with different structures, variable grafting methods, and diverse applications in biomaterials and biomedical devices reported in literature. Overall, we expect to shed some light on choosing the appropriate antifouling molecules in fabricating bioactive surfaces.
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Ge Q, Wang X, Luo Y, Zheng X, Ma L. E7-Modified Substrates to Promote Adhesion and Maintain Stemness of Mesenchymal Stem Cells. Macromol Biosci 2021; 21:e2000384. [PMID: 33480478 DOI: 10.1002/mabi.202000384] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/21/2020] [Indexed: 11/10/2022]
Abstract
Mesenchymal stem cells (MSCs) have drawn great attention in clinical applications due to the self-renewal ability, multi-differentiation potential, and low immunogenicity. However, there are challenges in the ex vivo expansion of MSCs, including low efficiency, stemness loss, and safety. Therefore, it is crucial to construct a substrate that can show an alterable affinity to MSCs, and induce efficient cell expansion with minimal stemness loss. In this study, EPLQLKM (E7)-modified substrates with tunable E7 densities are fabricated on PEGylated substrates. The PEG layer with an average thickness of 1.7 nm shows good antifouling ability. E7-modified substrates have an improving effect on adhesion and spreading of the rat bone marrow-derived mesenchymal stem cells (rBMSCs), along with the increase of E7 densities. rBMSCs on E7-modified substrates maintain the stem cell phenotypes, and shows robust proliferation and multilineage differentiation, especially on the substrates with high E7 densities. In summary, this study provides a novel strategy of E7 functionalization to promote adhesion and maintain stemness of MSCs, which holds great potentials in the functionalization of microcarriers for the expansion of MSCs.
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Affiliation(s)
- Qunzi Ge
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Xuemei Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yu Luo
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Xiaowen Zheng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Lie Ma
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
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10
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Song J, Jia X, Ariga K. Interfacial nanoarchitectonics for responsive cellular biosystems. Mater Today Bio 2020; 8:100075. [PMID: 33024954 PMCID: PMC7529844 DOI: 10.1016/j.mtbio.2020.100075] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 08/26/2020] [Accepted: 08/28/2020] [Indexed: 01/08/2023] Open
Abstract
The living cell can be regarded as an ideal functional material system in which many functional systems are working together with high efficiency and specificity mostly under mild ambient conditions. Fabrication of living cell-like functional materials is regarded as one of the final goals of the nanoarchitectonics approach. In this short review article, material-based approaches for regulation of living cell behaviors by external stimuli are discussed. Nanoarchitectonics strategies on cell regulation by various external inputs are first exemplified. Recent approaches on cell regulation with interfacial nanoarchitectonics are also discussed in two extreme cases using a very hard interface with nanoarchitected carbon arrays and a fluidic interface of the liquid-liquid interface. Importance of interfacial nanoarchitectonics in controlling living cells by mechanical and supramolecular stimuli from the interfaces is demonstrated.
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Affiliation(s)
- Jingwen Song
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8561, Japan
| | - Xiaofang Jia
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, 305-0044, Japan
| | - Katsuhiko Ariga
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8561, Japan
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, 305-0044, Japan
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11
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Ishihara K, Ito M, Fukazawa K, Inoue Y. Interface of Phospholipid Polymer Grafting Layers to Analyze Functions of Immobilized Oligopeptides Involved in Cell Adhesion. ACS Biomater Sci Eng 2020; 6:3984-3993. [PMID: 33463330 DOI: 10.1021/acsbiomaterials.0c00518] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The aim of this study was to design a material surface for use in the analysis of the behavior of biomolecules at the interface of direct cell contact. A superhydrophilic surface was prepared with poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC), which was grafted onto a substrate with controlled polymer chain density. An arginine-glycine-aspartic acid (RGD) peptide was immobilized at the surface of the polymer graft surface (PMPC-RGD surface). Initial adhesion of the cells to this substrate was observed. The PMPC-RGD surface could enable cell adhesion only through RGD peptide-integrin interactions. The density and movability of the RGD peptide at the terminal of the graft PMPC chain and the orientation of the RGD peptide affected the density of adherent cells. Thus, the PMPC graft surface may be a good candidate for a new platform with the ability to immobilize biomolecules to a defined position and enable accurate analysis of their effects on cells.
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Ding Y, Yuan Z, Liu P, Cai K, Liu R. Fabrication of strontium-incorporated protein supramolecular nanofilm on titanium substrates for promoting osteogenesis. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 111:110851. [DOI: 10.1016/j.msec.2020.110851] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 02/25/2020] [Accepted: 03/12/2020] [Indexed: 02/06/2023]
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Ross-Naylor JA, Mijajlovic M, Biggs MJ. Energy Landscapes of a Pair of Adsorbed Peptides. J Phys Chem B 2020; 124:2401-2409. [PMID: 32125854 DOI: 10.1021/acs.jpcb.0c00859] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The wide relevance of peptide adsorption in natural and synthetic contexts means it has attracted much attention. Molecular dynamics (MD) simulation has been widely used in these endeavors. Much of this has focused on single peptides due to the computational effort required to capture the rare events that characterize their adsorption. This focus is, however, of limited practical relevance as in reality, most systems of interest operate in the nondilute regime where peptides will interact with other adsorbed peptides. As an alternative to MD simulation, we have used energy landscape mapping (ELM) to investigate two met-enkephalin molecules adsorbed at a gas/graphite interface. Major conformations of the adsorbed peptides and the connecting transition states are elucidated along with the associated energy barriers and rates of exchange. The last of these makes clear that MD simulations are currently of limited use in probing the co-adsorption of two peptides, let alone more. The constant volume heat capacity as a function of temperature is also presented. Overall, this study represents a significant step toward characterizing peptide adsorption beyond the dilute limit.
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Affiliation(s)
- James A Ross-Naylor
- School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Milan Mijajlovic
- School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Mark J Biggs
- College of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, United Kingdom
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Oai K, Inoue Y, Nakao A, Fukazawa K, Ishihara K. Antibacterial effect of nanometer‐size grafted layer of quaternary ammonium polymer on poly(ether ether ketone) substrate. J Appl Polym Sci 2020. [DOI: 10.1002/app.49088] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Keiko Oai
- Department of Materials Engineering, School of EngineeringThe University of Tokyo Tokyo Japan
| | - Yuuki Inoue
- Department of Materials Engineering, School of EngineeringThe University of Tokyo Tokyo Japan
| | | | - Kyoko Fukazawa
- Department of Materials Engineering, School of EngineeringThe University of Tokyo Tokyo Japan
| | - Kazuhiko Ishihara
- Department of Materials Engineering, School of EngineeringThe University of Tokyo Tokyo Japan
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Sakakibara K, Nishiumi K, Shimoaka T, Hasegawa T, Tsujii Y. pMAIRS Analysis on Chain-End Functionalization of Densely Grafted, Concentrated Polymer Brushes. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Keita Sakakibara
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Kosuke Nishiumi
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Takafumi Shimoaka
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Takeshi Hasegawa
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Yoshinobu Tsujii
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
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Totani M, Liu L, Matsuno H, Tanaka K. Design of a star-like hyperbranched polymer having hydrophilic arms for anti-biofouling coating. J Mater Chem B 2019; 7:1045-1049. [PMID: 32254771 DOI: 10.1039/c8tb03104e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A star-like hyperbranched polymer having hydrophilic poly(ethyleneoxide acrylate) arms (HB-PEO9A) was prepared by a core-first method based on atom transfer radical polymerization. The PEO9A layer coated on a solid substrate was dissolved by water, and effectively inhibited protein adsorption and cell adhesion.
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Affiliation(s)
- Masayasu Totani
- Department of Applied Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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Baggerman J, Smulders MMJ, Zuilhof H. Romantic Surfaces: A Systematic Overview of Stable, Biospecific, and Antifouling Zwitterionic Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1072-1084. [PMID: 30620199 PMCID: PMC6365910 DOI: 10.1021/acs.langmuir.8b03360] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 11/10/2018] [Indexed: 05/21/2023]
Abstract
This Feature Article focuses on recent advances in the bioconjugation of surface-bound zwitterionic polymers for biospecific antifouling surfaces. Various approaches for the functionalization of antifouling zwitterionic polymers are systematically investigated, such as chain-end and side-chain functionalization. Side-chain functionalization methods can be further classified as those that are achieved through homopolymerization of custom-synthesized zwitterionic monomers equipped with reactive groups, or those that are achieved via synthesis of random or block copolymers combining different monomers with antifouling functionality and others with reactive groups. Several of the pros and cons of these approaches are outlined and discussed. Finally, some perspective and future directions of research are presented toward long-term stable, generically repelling surfaces that strongly and specifically adhere to a single component in a complex mixture.
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Affiliation(s)
- Jacob Baggerman
- Laboratory
of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Maarten M. J. Smulders
- Laboratory
of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Han Zuilhof
- Laboratory
of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
- School
of Pharmaceutical Sciences and Technology, Tianjin University, 92 Weijin Road, Tianjin 300350, People’s Republic of China
- Department
of Chemical and Materials Engineering, King
Abdulaziz University, 21589 Jeddah, Saudi Arabia
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