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Cervantes-Salguero K, Freeley M, Gwyther REA, Jones DD, Chávez JL, Palma M. Single molecule DNA origami nanoarrays with controlled protein orientation. BIOPHYSICS REVIEWS 2022; 3:031401. [PMID: 38505279 PMCID: PMC10903486 DOI: 10.1063/5.0099294] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 07/20/2022] [Indexed: 03/21/2024]
Abstract
The nanoscale organization of functional (bio)molecules on solid substrates with nanoscale spatial resolution and single-molecule control-in both position and orientation-is of great interest for the development of next-generation (bio)molecular devices and assays. Herein, we report the fabrication of nanoarrays of individual proteins (and dyes) via the selective organization of DNA origami on nanopatterned surfaces and with controlled protein orientation. Nanoapertures in metal-coated glass substrates were patterned using focused ion beam lithography; 88% of the nanoapertures allowed immobilization of functionalized DNA origami structures. Photobleaching experiments of dye-functionalized DNA nanostructures indicated that 85% of the nanoapertures contain a single origami unit, with only 3% exhibiting double occupancy. Using a reprogrammed genetic code to engineer into a protein new chemistry to allow residue-specific linkage to an addressable ssDNA unit, we assembled orientation-controlled proteins functionalized to DNA origami structures; these were then organized in the arrays and exhibited single molecule traces. This strategy is of general applicability for the investigation of biomolecular events with single-molecule resolution in defined nanoarrays configurations and with orientational control of the (bio)molecule of interest.
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Affiliation(s)
- K. Cervantes-Salguero
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London, London, United Kingdom
| | - M. Freeley
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London, London, United Kingdom
| | - R. E. A. Gwyther
- Division of Molecular Biosciences, School of Biosciences, Main Building, Cardiff University, Cardiff, Wales, United Kingdom
| | - D. D. Jones
- Division of Molecular Biosciences, School of Biosciences, Main Building, Cardiff University, Cardiff, Wales, United Kingdom
| | - J. L. Chávez
- Air Force Research Laboratory, 711th Human Performance Wing, Wright Patterson Air Force Base, Dayton, Ohio 45433-7901, USA
| | - M. Palma
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London, London, United Kingdom
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2
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Riegert J, Töpel A, Schieren J, Coryn R, Dibenedetto S, Braunmiller D, Zajt K, Schalla C, Rütten S, Zenke M, Pich A, Sechi A. Guiding cell adhesion and motility by modulating cross-linking and topographic properties of microgel arrays. PLoS One 2021; 16:e0257495. [PMID: 34555082 PMCID: PMC8460069 DOI: 10.1371/journal.pone.0257495] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 09/02/2021] [Indexed: 12/14/2022] Open
Abstract
Biomaterial-driven modulation of cell adhesion and migration is a challenging aspect of tissue engineering. Here, we investigated the impact of surface-bound microgel arrays with variable geometry and adjustable cross-linking properties on cell adhesion and migration. We show that cell migration is inversely correlated with microgel array spacing, whereas directionality increases as array spacing increases. Focal adhesion dynamics is also modulated by microgel topography resulting in less dynamic focal adhesions on surface-bound microgels. Microgels also modulate the motility and adhesion of Sertoli cells used as a model for cell migration and adhesion. Both focal adhesion dynamics and speed are reduced on microgels. Interestingly, Gas2L1, a component of the cytoskeleton that mediates the interaction between microtubules and microfilaments, is dispensable for the regulation of cell adhesion and migration on microgels. Finally, increasing microgel cross-linking causes a clear reduction of focal adhesion turnover in Sertoli cells. These findings not only show that spacing and rigidity of surface-grafted microgels arrays can be effectively used to modulate cell adhesion and motility of diverse cellular systems, but they also form the basis for future developments in the fields of medicine and tissue engineering.
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Affiliation(s)
- Janine Riegert
- Dept. of Cell Biology, Institute of Biomedical Engineering, RWTH Aachen
University, Aachen, Germany
| | - Alexander Töpel
- 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
| | - Jana Schieren
- Dept. of Cell Biology, Institute of Biomedical Engineering, RWTH Aachen
University, Aachen, Germany
| | - Renee Coryn
- Dept. of Cell Biology, Institute of Biomedical Engineering, RWTH Aachen
University, Aachen, Germany
| | - Stella Dibenedetto
- Dept. of Cell Biology, Institute of Biomedical Engineering, RWTH Aachen
University, Aachen, Germany
| | - Dominik Braunmiller
- 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
| | - Kamil Zajt
- Dept. of Cell Biology, Institute of Biomedical Engineering, RWTH Aachen
University, Aachen, Germany
| | - Carmen Schalla
- Dept. of Cell Biology, Institute of Biomedical Engineering, RWTH Aachen
University, Aachen, Germany
| | - Stephan Rütten
- Electron Microscopy Facility, Institute of Pathology, RWTH Aachen
University, Aachen, Germany
| | - Martin Zenke
- Dept. of Cell Biology, Institute of Biomedical Engineering, RWTH Aachen
University, 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
| | - Antonio Sechi
- Dept. of Cell Biology, Institute of Biomedical Engineering, RWTH Aachen
University, Aachen, Germany
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Liu X, Liang X, Hu Y, Han L, Qu Q, Liu D, Guo J, Zeng Z, Bai H, Kwok RTK, Qin A, Lam JWY, Tang BZ. Catalyst-Free Spontaneous Polymerization with 100% Atom Economy: Facile Synthesis of Photoresponsive Polysulfonates with Multifunctionalities. JACS AU 2021; 1:344-353. [PMID: 34467298 PMCID: PMC8395608 DOI: 10.1021/jacsau.0c00100] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Indexed: 05/14/2023]
Abstract
Photoresponsive polymers have attracted extensive attention due to their tunable functionalities and advanced applications; thus, it is significant to develop facile in situ synthesis strategies, extend polymers family, and establish various applications for photoresponsive polymers. Herein, we develop a catalyst-free spontaneous polymerization of dihaloalkynes and disulfonic acids without photosensitive monomers for the in situ synthesis of photoresponsive polysulfonates at room temperature in air with 100% atom economy in high yields. The resulting polysulfonates could undergo visible photodegradation with strong photoacid generation, leading to various applications including dual-emissive or 3D photopatterning, and practical broad-spectrum antibacterial activity. The halogen-rich polysulfonates also exhibit a high and photoswitched refractive index and could undergo efficient postfunctionalizations to further expand the variety and functionality of photoresponsive heteroatom-containing polyesters.
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Affiliation(s)
- Xiaolin Liu
- Department
of Chemistry, Hong Kong Branch of Chinese National Engineering Research
Center for Tissue Restoration and Reconstruction, and Institute for
Advanced Study, The Hong Kong University
of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Xin Liang
- College
of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, Shandong 266109 China
| | - Yubing Hu
- Department
of Chemistry, Hong Kong Branch of Chinese National Engineering Research
Center for Tissue Restoration and Reconstruction, and Institute for
Advanced Study, The Hong Kong University
of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Lei Han
- Department
of Chemistry, Hong Kong Branch of Chinese National Engineering Research
Center for Tissue Restoration and Reconstruction, and Institute for
Advanced Study, The Hong Kong University
of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- College
of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, Shandong 266109 China
| | - Qing Qu
- Nano
Science and Technology Program and William Mong Institute of Nano
Science and Technology, The Hong Kong University
of Science and Technology, Clear
Water Bay, Hong Kong China
| | - Dongming Liu
- Center
for Aggregation-Induced Emission, SCUT-HKUST Joint Research Institute,
State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Jing Guo
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Zebing Zeng
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Haotian Bai
- Department
of Chemistry, Hong Kong Branch of Chinese National Engineering Research
Center for Tissue Restoration and Reconstruction, and Institute for
Advanced Study, The Hong Kong University
of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ryan T. K. Kwok
- Department
of Chemistry, Hong Kong Branch of Chinese National Engineering Research
Center for Tissue Restoration and Reconstruction, and Institute for
Advanced Study, The Hong Kong University
of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen
Research Institute, No.
9 Yuexing first RD, South Area, Hi-tech Park, Nanshan, Shenzhen 518057, China
| | - Anjun Qin
- Center
for Aggregation-Induced Emission, SCUT-HKUST Joint Research Institute,
State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Jacky W. Y. Lam
- Department
of Chemistry, Hong Kong Branch of Chinese National Engineering Research
Center for Tissue Restoration and Reconstruction, and Institute for
Advanced Study, The Hong Kong University
of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen
Research Institute, No.
9 Yuexing first RD, South Area, Hi-tech Park, Nanshan, Shenzhen 518057, China
| | - Ben Zhong Tang
- Department
of Chemistry, Hong Kong Branch of Chinese National Engineering Research
Center for Tissue Restoration and Reconstruction, and Institute for
Advanced Study, The Hong Kong University
of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen
Research Institute, No.
9 Yuexing first RD, South Area, Hi-tech Park, Nanshan, Shenzhen 518057, China
- Center
for Aggregation-Induced Emission, SCUT-HKUST Joint Research Institute,
State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
- AIE Institute, Guangzhou Development District, Huangpu, Guangzhou 510530, China
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6
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Fang L, Liu X, Xiang S, Liu W, Shen H, Li Z, Zhang K, Song W, Yang B. Large-scale Au nanoparticle cluster arrays with tunable particle numbers evolved from colloidal lithography. NANOTECHNOLOGY 2018; 29:405301. [PMID: 30010616 DOI: 10.1088/1361-6528/aad3a3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The assembly of metal nanoparticles (NPs) can regulate their plasmon resonance properties to pursue the best properties for applications. However, the controllable assembly of large-scale metal NP cluster arrays remains a significant challenge. This paper presents a novel strategy to prepare large-scale Au NP cluster arrays based on colloidal lithography and template-guided self-assembly technique. The NPs arrays are fabricated by introducing Au NPs onto the quaternized poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) brush templates via electrostatic interaction. The number of Au NPs in cluster can be arbitrarily tuned by changing the surface area of the polymer templates created by colloidal lithography, which resulted in tunable plasmonic properties. The prepared Au NP cluster arrays were used for surface enhanced Raman scattering (SERS) and the SERS properties of the Au NP cluster arrays were studied.
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Affiliation(s)
- Liping Fang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China. College of Chemistry and Environmental Science, Hebei University, Baoding 071002, People's Republic of China
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7
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Kumar R, Welle A, Becker F, Kopyeva I, Lahann J. Substrate-Independent Micropatterning of Polymer Brushes Based on Photolytic Deactivation of Chemical Vapor Deposition Based Surface-Initiated Atom-Transfer Radical Polymerization Initiator Films. ACS APPLIED MATERIALS & INTERFACES 2018; 10:31965-31976. [PMID: 30180547 DOI: 10.1021/acsami.8b11525] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Precise microscale arrangement of biomolecules and cells is essential for tissue engineering, microarray development, diagnostic sensors, and fundamental research in the biosciences. Biofunctional polymer brushes have attracted broad interest in these applications. However, patterning approaches to creating microstructured biointerfaces based on polymer brushes often involve tedious, expensive, and complicated procedures that are specifically designed for model substrates. We report a substrate-independent, facile, and scalable technique with which to prepare micropatterned biofunctional brushes with the ability to generate binary chemical patterns. Employing chemical vapor deposition (CVD) polymerization, a functionalized polymer coating decorated with 2-bromoisobutyryl groups that act as atom-transfer radical polymerization (ATRP) initiators was prepared and subsequently modified using UV light. The exposure of 2-bromoisobutyryl groups to UV light with wavelengths between 187 and 254 nm resulted in selective debromination, effectively eliminating the initiation of ATRP. In addition, when coatings incorporating both 2-bromoisobutyryl and primary amine groups were irradiated with UV light, the amines retained their functionality after UV treatment and could be conjugated to activated esters, facilitating binary chemical patterns. In contrast, polymer brushes were selectively grown from areas protected from UV treatment, as confirmed by atomic force microscopy, time-of-flight secondary ion mass spectrometry, and imaging ellipsometry. Furthermore, spatial control over biomolecular adhesion was achieved in three ways: (1) patterned nonfouling brushes resulted in nonspecific protein adsorption to areas not covered with polymer brushes; (2) patterned brushes decorated with active binding sides gave rise to specific protein immobilization on areas presenting polymer brushes; (3) and primary amines were co-patterned along with clickable polymer brushes bearing pendant alkyne groups, leading to bifunctional reactivity. Because this novel technique is independent of the original substrate's physicochemical properties, it can be extended to technologically relevant substrates such as polystyrene, polydimethylsiloxane, polyvinyl chloride, and steel. With further work, the photolytic deactivation of CVD-based initiator coatings promises to advance the utility of patterned biofunctional polymer brushes across a spectrum of biomedical applications.
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9
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Patterned surfaces for biological applications: A new platform using two dimensional structures as biomaterials. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2016.09.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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10
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Dehghani ES, Spencer ND, Ramakrishna SN, Benetti EM. Crosslinking Polymer Brushes with Ethylene Glycol-Containing Segments: Influence on Physicochemical and Antifouling Properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:10317-10327. [PMID: 27642809 DOI: 10.1021/acs.langmuir.6b02958] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The introduction of different types and concentrations of crosslinks within poly(hydroxyethyl methacrylate) (PHEMA) brushes influences their interfacial, physicochemical properties, ultimately governing their adsorption of proteins. PHEMA brushes and brush-hydrogels were synthesized by surface-initiated, atom-transfer radical polymerization (SI-ATRP) from HEMA, with and without the addition of di(ethylene glycol) dimethacrylate (DEGDMA) or tetra(ethylene glycol) dimethacrylate (TEGDMA) as crosslinkers. Linear (pure PHEMA) brushes show high hydration and low modulus and additionally provide an efficient barrier against nonspecific protein adsorption. In contrast, brush-hydrogels are stiffer and less hydrated, and the presence of crosslinks affects the entropy-driven, conformational barrier that hinders the surface interaction of biomolecules with brushes. This leads to the physisorption of proteins at low concentrations of short crosslinks. At higher contents of DEGDMA or in the presence of longer TEGDMA-based crosslinks, brush-hydrogels recover their antifouling properties due to the increase in interfacial water association by the higher concentration of ethylene glycol (EG) units.
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Affiliation(s)
- Ella S Dehghani
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich , Vladimir-Prelog-Weg 5, CH-8093 Zurich, Switzerland
| | - Nicholas D Spencer
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich , Vladimir-Prelog-Weg 5, CH-8093 Zurich, Switzerland
| | - Shivaprakash N Ramakrishna
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich , Vladimir-Prelog-Weg 5, CH-8093 Zurich, Switzerland
| | - Edmondo M Benetti
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich , Vladimir-Prelog-Weg 5, CH-8093 Zurich, Switzerland
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11
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Yang JC, Park JY. Polymeric Colloidal Nanostructures Fabricated via Highly Controlled Convective Assembly and Their Use for Molecular Imprinting. ACS APPLIED MATERIALS & INTERFACES 2016; 8:7381-7389. [PMID: 26938141 DOI: 10.1021/acsami.6b00375] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this work, the formation of various polystyrene (PS) colloidal structures on striped PS patterns is demonstrated based on a simple and novel convective assembly method that controls the electrostatic interactions between the PS colloidal particles and sodium dodecyl sulfate (SDS). Under the optimal conditions (different withdrawal speeds, channel dimensions, suspension concentrations, etc.), highly ordered structures such as highly close-packed, zigzag, and linear colloidal aggregates are observed. In addition, these colloidal arrangements are used for development of molecularly imprinted polymer (MIP) sensors with highly improved sensing properties. Using PDMS replicas, three hemispherical poly(methacrylic acid-ethylene glycol dimethacrylate) (poly(MAA-EGDMA)) MIP films, including planar MIP and non-imprinted polymer (NIP) films, are photopolymerized for detection of trace atrazine in an aqueous solution. From gravimetric quartz crystal microbalance (QCM) measurements, a non-close-packed MIP film exhibits highest sensing response (Δf = 932 Hz) to atrazine detection among hemispherical MIP films and shows 6.5-fold higher sensing response than the planar MIP film. In addition, the sensitivity of the MIP sensor is equivalent to -119 Hz/(mol L(-1)). From the ratio of slopes of the calibration curves for the hemispherical MIP and NIP films, the imprinting factor (If) is as high as 11.0. The hemispherical MIP film also shows excellent selectivity in comparison with the sensing responses of other analogous herbicides. As a result, this molecular surface imprinting using PS colloidal arrays is highly efficient for herbicide detection.
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Affiliation(s)
- Jin Chul Yang
- Department of Polymer Science and Engineering, Kyungpook National University , 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Jin Young Park
- Department of Polymer Science and Engineering, Kyungpook National University , 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
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12
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Single step neutravidin patterning: a lithographic approach for patterning proteins. Biomed Microdevices 2016; 18:29. [DOI: 10.1007/s10544-016-0053-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Liu W, Liu X, Ge P, Fang L, Xiang S, Zhao X, Shen H, Yang B. Hierarchical-Multiplex DNA Patterns Mediated by Polymer Brush Nanocone Arrays That Possess Potential Application for Specific DNA Sensing. ACS APPLIED MATERIALS & INTERFACES 2015; 7:24760-24771. [PMID: 26497053 DOI: 10.1021/acsami.5b07577] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This paper provides a facile and cost-efficient method to prepare single-strand DNA (ssDNA) nanocone arrays and hierarchical DNA patterns that were mediated by poly(2-hydroxyethyl methacrylate) (PHEMA) brush. The PHEMA brush nanocone arrays with different morphology and period were fabricated via colloidal lithography. The hierarchical structure was prepared through the combination of colloidal lithography and traditional photolithography. The DNA patterns were easily achieved via grafting the amino group modified ssDNA onto the side chain of polymer brush, and the anchored DNA maintained their reactivity. The as-prepared ssDNA nanocone arrays can be applied for target DNA sensing with the detection limit reaching 1.65 nM. Besides, with the help of introducing microfluidic ideology, the hierarchical-multiplex DNA patterns on the same substrate could be easily achieved with each kind of pattern possessing one kind of ssDNA, which are promising surfaces for the preparation of rapid, visible, and multiplex DNA sensors.
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Affiliation(s)
- Wendong Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
| | - Xueyao Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
| | - Peng Ge
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
| | - Liping Fang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
| | - Siyuan Xiang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
| | - Xiaohuan Zhao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
| | - Huaizhong Shen
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
| | - Bai Yang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
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Wolfesberger C, Wollhofen R, Buchegger B, Jacak J, Klar TA. Streptavidin functionalized polymer nanodots fabricated by visible light lithography. J Nanobiotechnology 2015; 13:27. [PMID: 25888763 PMCID: PMC4453224 DOI: 10.1186/s12951-015-0084-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Accepted: 03/05/2015] [Indexed: 11/25/2022] Open
Abstract
Background Two-photon polymerization, optionally combined with stimulated emission depletion (STED) lithography, allows two and three dimensional polymer fabrication with structure sizes and resolution below the diffraction limit. Structuring of polymers with photons, whose wavelength is within the visible range of the electromagnetic spectrum, gives new opportunities to a large field of applications e.g. in the field of biotechnology and tissue engineering. In order to create new biotechnological applications, versatile methods are needed to functionalize the polymeric structures. Results Here we report the creation of polymer-nanodots with high streptavidin (SA) affinity via two-photon polymerization (TPP). Controlling the size of the polymer dots allows for limiting the number of the SA molecules. TPP dots with a diameter of a few 100 nm show up to 100% streptavidin loading. We can show that most of the dots are loaded by one to two streptavidins on average. Attached streptavidin molecules remain functional and are capable to bind 0.7 biotin molecules on average. Conclusion The presented functionalized nanostructures may be used as platforms for a multitude of biological experimental setups. Nanoscopic well defined structures, capable of selective binding of streptavin proteins, used as linkers for other biotinylated biomolecules, may also find application in in-vitro sensing, like for example lab on chip devices with limited surface area.
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Affiliation(s)
- Clemens Wolfesberger
- Institute of Applied Physics, Johannes Kepler University Linz, Altenberger Str. 69, 4040, Linz, Austria. .,Department of Medical Engineering, Upper Austria University of Applied Sciences, Campus Linz, Garnisonstr. 21, 4020, Linz, Austria.
| | - Richard Wollhofen
- Institute of Applied Physics, Johannes Kepler University Linz, Altenberger Str. 69, 4040, Linz, Austria.
| | - Bianca Buchegger
- Institute of Applied Physics, Johannes Kepler University Linz, Altenberger Str. 69, 4040, Linz, Austria.
| | - Jaroslaw Jacak
- Institute of Applied Physics, Johannes Kepler University Linz, Altenberger Str. 69, 4040, Linz, Austria. .,Department of Medical Engineering, Upper Austria University of Applied Sciences, Campus Linz, Garnisonstr. 21, 4020, Linz, Austria.
| | - Thomas A Klar
- Institute of Applied Physics, Johannes Kepler University Linz, Altenberger Str. 69, 4040, Linz, Austria.
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15
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Patil R, Kiserow D, Genzer J. Creating surface patterns of polymer brushes by degrafting via tetrabutyl ammonium fluoride. RSC Adv 2015. [DOI: 10.1039/c5ra17000a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
We demonstrate the use of tetrabutyl ammonium fluoride (TBAF) for creating spatial patterns of poly(methyl methacrylate) (PMMA) brushes on a flat silica support by degrafting PMMA grafted chains from selected regions on the substrate.
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Affiliation(s)
- Rohan Patil
- Department of Chemical and Biomolecular Engineering
- North Carolina State University
- Raleigh
- USA
| | - Douglas Kiserow
- Department of Chemical and Biomolecular Engineering
- North Carolina State University
- Raleigh
- USA
- US Army Research Office
| | - Jan Genzer
- Department of Chemical and Biomolecular Engineering
- North Carolina State University
- Raleigh
- USA
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Jiang ZQ, Xue YX, Chen JL, Yu ZP, Liu N, Yin J, Zhu YY, Wu ZQ. One-Pot Synthesis of Brush Copolymers Bearing Stereoregular Helical Polyisocyanides as Side Chains through Tandem Catalysis. Macromolecules 2014. [DOI: 10.1021/ma502283f] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Zhi-Qiang Jiang
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Ya-Xin Xue
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Jia-Li Chen
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Zhi-Peng Yu
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Na Liu
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Jun Yin
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Yuan-Yuan Zhu
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
| | - Zong-Quan Wu
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
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Fang L, Li Y, Chen Z, Liu W, Zhang J, Xiang S, Shen H, Li Z, Yang B. Tunable polymer brush/Au NPs hybrid plasmonic arrays based on host-guest interaction. ACS APPLIED MATERIALS & INTERFACES 2014; 6:19951-19957. [PMID: 25347749 DOI: 10.1021/am505434u] [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
The fabrication of versatile gold nanoparticle (Au NP) arrays with tunable optical properties by a novel host-guest interaction are presented. The gold nanoparticles were incorporated into polymer brushes by host-guest interaction between β-cyclodextrin (β-CD) ligand of gold nanoparticles and dimethylamino group of poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA). The gold nanoparticle arrays were prepared through the template of PDMAEMA brush patterns which were fabricated combining colloidal lithography and surface-initiated atom-transfer radical polymerization (SI-ATRP). The structure parameters of gold nanoparticle patterns mediated by polymer brushes such as height, diameters, periods and distances, could be easily tuned by tailoring the etching time or size of colloidal spheres in the process of colloidal lithography. The change of optical properties induced by different gold nanoparticle structures was demonstrated. The direct utilization of PDMAEMA brushes as guest avoids a series of complicated modification process and the PDMAEMA brushes can be grafted on various substrates, which broaden its applications. The prepared gold naoparticle arrays are promising in applications of nanosensors, memory storage and surface enhanced spectroscopy.
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Affiliation(s)
- Liping Fang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, People's Republic of China
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Krishnamoorthy M, Hakobyan S, Ramstedt M, Gautrot JE. Surface-initiated polymer brushes in the biomedical field: applications in membrane science, biosensing, cell culture, regenerative medicine and antibacterial coatings. Chem Rev 2014; 114:10976-1026. [PMID: 25353708 DOI: 10.1021/cr500252u] [Citation(s) in RCA: 393] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Mahentha Krishnamoorthy
- Institute of Bioengineering and ‡School of Engineering and Materials Science, Queen Mary University of London , Mile End Road, London E1 4NS, United Kingdom
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Xie Z, Chen C, Zhou X, Gao T, Liu D, Miao Q, Zheng Z. Massively parallel patterning of complex 2D and 3D functional polymer brushes by polymer pen lithography. ACS APPLIED MATERIALS & INTERFACES 2014; 6:11955-11964. [PMID: 24417672 DOI: 10.1021/am405555e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report the first demonstration of centimeter-area serial patterning of complex 2D and 3D functional polymer brushes by high-throughput polymer pen lithography. Arbitrary 2D and 3D structures of poly(glycidyl methacrylate) (PGMA) brushes are fabricated over areas as large as 2 cm × 1 cm, with a remarkable throughput being 3 orders of magnitudes higher than the state-of-the-arts. Patterned PGMA brushes are further employed as resist for fabricating Au micro/nanostructures and hard molds for the subsequent replica molding of soft stamps. On the other hand, these 2D and 3D PGMA brushes are also utilized as robust and versatile platforms for the immobilization of bioactive molecules to form 2D and 3D patterned DNA oligonucleotide and protein chips. Therefore, this low-cost, yet high-throughput "bench-top" serial fabrication method can be readily applied to a wide range of fields including micro/nanofabrication, optics and electronics, smart surfaces, and biorelated studies.
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Affiliation(s)
- Zhuang Xie
- The Hong Kong Polytechnic University Shenzhen Research Institute , Shenzhen, China
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