1
|
Kratochvíl J, Asor R, Helmi S, Struwe WB, Kukura P. Lifting the Concentration Limit of Mass Photometry by PEG Nanopatterning. NANO LETTERS 2024; 24:10032-10039. [PMID: 38950386 PMCID: PMC11342371 DOI: 10.1021/acs.nanolett.4c01667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 07/03/2024]
Abstract
Mass photometry (MP) is a rapidly growing optical technique for label-free mass measurement of single biomolecules in solution. The underlying measurement principle provides numerous advantages over ensemble-based methods but has been limited to low analyte concentrations due to the need to uniquely and accurately quantify the binding of individual molecules to the measurement surface, which results in diffraction-limited spots. Here, we combine nanoparticle lithography with surface PEGylation to substantially lower surface binding, resulting in a 2 orders of magnitude improvement in the upper concentration limit associated with mass photometry. We demonstrate the facile tunability of degree of passivation, enabling measurements at increased analyte concentrations. These advances provide access to protein-protein interactions in the high nanomolar to low micromolar range, substantially expanding the application space of mass photometry.
Collapse
Affiliation(s)
- Jiří Kratochvíl
- The
Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, U.K.
- Physical
and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, U.K.
| | - Roi Asor
- The
Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, U.K.
- Physical
and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, U.K.
| | - Seham Helmi
- The
Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, U.K.
- Physical
and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, U.K.
| | - Weston B. Struwe
- The
Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, U.K.
- Department
of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, U.K.
| | - Philipp Kukura
- The
Kavli Institute for Nanoscience Discovery, University of Oxford, Dorothy Crowfoot Hodgkin Building, South Parks Road, Oxford OX1 3QU, U.K.
- Physical
and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, U.K.
| |
Collapse
|
2
|
E-cadherin mediated cell-biomaterial interaction reduces migration of keratinocytes in-vitro. Colloids Surf B Biointerfaces 2019; 180:326-333. [DOI: 10.1016/j.colsurfb.2019.04.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 03/15/2019] [Accepted: 04/04/2019] [Indexed: 12/12/2022]
|
3
|
Brassat K, Ramakrishnan S, Bürger J, Hanke M, Doostdar M, Lindner JKN, Grundmeier G, Keller A. On the Adsorption of DNA Origami Nanostructures in Nanohole Arrays. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:14757-14765. [PMID: 29754490 DOI: 10.1021/acs.langmuir.8b00793] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
DNA origami nanostructures are versatile substrates for the controlled arrangement of molecular capture sites with nanometer precision and thus have many promising applications in single-molecule bioanalysis. Here, we investigate the adsorption of DNA origami nanostructures in nanohole arrays which represent an important class of biosensors and may benefit from the incorporation of DNA origami-based molecular probes. Nanoholes with well-defined diameter that enable the adsorption of single DNA origami triangles are fabricated in Au films on Si wafers by nanosphere lithography. The efficiency of directed DNA origami adsorption on the exposed SiO2 areas at the bottoms of the nanoholes is evaluated in dependence of various parameters, i.e., Mg2+ and DNA origami concentrations, buffer strength, adsorption time, and nanohole diameter. We observe that the buffer strength has a surprisingly strong effect on DNA origami adsorption in the nanoholes and that multiple DNA origami triangles with 120 nm edge length can adsorb in nanoholes as small as 120 nm in diameter. We attribute the latter observation to the low lateral mobility of once adsorbed DNA origami on the SiO2 surface, in combination with parasitic adsorption to the Au film. Although parasitic adsorption can be suppressed by modifying the Au film with a hydrophobic self-assembled monolayer, the limited surface mobility of the adsorbed DNA origami still leads to poor localization accuracy in the nanoholes and results in many DNA origami crossing the boundary to the Au film even under optimized conditions. We discuss possible ways to minimize this effect by varying the composition of the adsorption buffer, employing different fabrication conditions, or using other substrate materials for nanohole array fabrication.
Collapse
|
4
|
Kajisa T, Yanagimoto Y, Saito A, Sakata T. Biocompatible Poly(catecholamine)-Film Electrode for Potentiometric Cell Sensing. ACS Sens 2018; 3:476-483. [PMID: 29359919 DOI: 10.1021/acssensors.7b00897] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Surface-coated poly(catecholamine) (pCA) films have attracted attention as biomaterial interfaces owing to their biocompatible and physicochemical characteristics. In this paper, we report that pCA-film-coated electrodes are useful for potentiometric biosensing devices. Four different types of pCA film, l-dopa, dopamine, norepinephrine, and epinephrine, with thicknesses in the range of 7-27 nm were electropolymerized by oxidation on Au electrodes by using cyclic voltammetry. By using the pCA-film electrodes, the pH responsivities were found to be 39.3-47.7 mV/pH within the pH range of 1.68 to 10.01 on the basis of the equilibrium reaction with hydrogen ions and the functional groups of the pCAs. The pCA films suppressed nonspecific signals generated by other ions (Na+, K+, Ca2+) and proteins such as albumin. Thus, the pCA-film electrodes can be used in pH-sensitive and pH-selective biosensors. HeLa cells were cultivated on the surface of the pCA-film electrodes to monitor cellular activities. The surface potential of the pCA-film electrodes changed markedly because of cellular activity; therefore, the change in the hydrogen ion concentration around the cell/pCA-film interface could be monitored in real time. This was caused by carbon dioxide or lactic acid that is generated by cellular respiration and dissolves in the culture medium, resulting in the change of hydrogen concentration. pCA-film electrodes are suitable for use in biocompatible and pH-responsive biosensors, enabling the more selective detection of biological phenomena.
Collapse
Affiliation(s)
- Taira Kajisa
- PROVIGATE
Inc., Entrepreneur Plaza, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yoshiyuki Yanagimoto
- PROVIGATE
Inc., Entrepreneur Plaza, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Akiko Saito
- Department
of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Toshiya Sakata
- Department
of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| |
Collapse
|
5
|
Zheng W, Fan H, Wang L, Jin Z. Oxidative Self-Polymerization of Dopamine in an Acidic Environment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:11671-11677. [PMID: 26442969 DOI: 10.1021/acs.langmuir.5b02757] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A weak alkaline condition (pH > 8) is a general requirement for oxidative self-polymerization of dopamine. Here, we first demonstrated the generation of polydopamine in an acidic environment via a hydrothermal method. The pH scope of self-polymerization of dopamine is extended to pH ∼ 1 in a hydrothermal process. Polydopamine generated via a hydrothermal method shows similar chemical features and radical scavenging activity with that generated in a basic environment.
Collapse
Affiliation(s)
- Weichao Zheng
- Department of Chemistry, Renmin University of China , Beijing 100872, People's Republic of China
| | - Hailong Fan
- Department of Chemistry, Renmin University of China , Beijing 100872, People's Republic of China
| | - Le Wang
- Department of Chemistry, Renmin University of China , Beijing 100872, People's Republic of China
| | - Zhaoxia Jin
- Department of Chemistry, Renmin University of China , Beijing 100872, People's Republic of China
| |
Collapse
|
6
|
Physicochemical perspective on "polydopamine" and "poly(catecholamine)" films for their applications in biomaterial coatings. Biointerphases 2015; 9:030801. [PMID: 25280841 DOI: 10.1116/1.4875115] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Bioinspired poly(catecholamine) based coatings, mostly "polydopamine," were conceived based on the chemistry used by mussels to adhere strongly to the surface of stones and wood in water and to remain attached to their substrates even under conditions of strong shear stresses. These kinds of films can in turn be easily modified with a plethora of molecules and inorganic (nano)materials. This review shows that poly(catecholamine) based coatings are an ideal film forming method for applications in the field of biomaterials. It is written from a physicochemical and a materials science perspective and discusses optical, chemical, electrochemical, and mechanical properties of polydopamine films. It further demonstrates that a better understanding of the polydopamine film deposition mechanism is warranted to improve the properties of these coatings even further.
Collapse
|
7
|
Wang G, Liu Y, Huang X, Di D. Adsorption of Quercetin, Kaempferol and Luteolin on Surface-Modified Polytetrafluoroethylene Films. ADSORPT SCI TECHNOL 2015. [DOI: 10.1260/0263-6174.33.5.487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
- Gaohong Wang
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanjuan Liu
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xinyi Huang
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Lanzhou 730000, China
| | - Duolong Di
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Lanzhou 730000, China
| |
Collapse
|
8
|
Wang PY, Bennetsen DT, Foss M, Ameringer T, Thissen H, Kingshott P. Modulation of human mesenchymal stem cell behavior on ordered tantalum nanotopographies fabricated using colloidal lithography and glancing angle deposition. ACS APPLIED MATERIALS & INTERFACES 2015; 7:4979-4989. [PMID: 25664369 DOI: 10.1021/acsami.5b00107] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Ordered surface nanostructures have attracted much attention in biotechnology and biomedical engineering because of their potential to modulate cell-surface interactions in a controllable manner. However, the ability to fabricate large area ordered nanostructures is limited because of high costs and low speed of fabrication. Here, we have fabricated ordered nanostructures with large surface areas (1.5 × 1.5 cm(2)) using a combination of facile techniques including colloidal self-assembly, colloidal lithography and glancing angle deposition (GLAD). Polystyrene (722 nm) colloids were self-assembled into a hexagonally close-packed (hcp) crystal array at the water-air interface, transferred on a biocompatible tantalum (Ta) surface and used as a mask to generate an ordered Ta pattern. The Ta was deposited by sputter coating through the crystal mask creating approximately 60-nm-high feature sizes. The feature size was further increased by approximately 200-nm-height respectively using GLAD, resulting in the fabrication of four different surfaces (FLAT, Ta60, GLAD100, and GLAD200). Cell adhesion, proliferation, and osteogenic differentiation of primary human adipose-derived stem cells (hADSCs) were studied on these ordered nanostructures for up to 2 weeks. Our results suggested that cell spreading, focal adhesion formation, and filopodia extension of hADSCs were inhibited on the GLAD surfaces, while the growth rate was similar between each surface. Immunostaining for type I collagen (COL1) and osteocalcin (OC) showed that there was higher osteogenic components deposited on the GLAD surfaces compared to the Ta60 and FLAT surfaces after 1 week of osteogenic culture. After 2 weeks of osteogenic culture, alkaline phosphatase (ALP) activity and the amount of calcium was higher on the GLAD surfaces. In addition, osteoblast-like cells were confluent on Ta60 and FLAT surfaces, whereas the GLAD surfaces were not fully covered suggesting that the cell-cell interactions are stronger than cell-substrate interactions on GLAD surfaces. Visible extracellular matrix deposits decorated the porous surface can be found on the GLAD surfaces. Depth profiling of surface components using a new Ar cluster source and X-ray photoelectron spectroscopy (XPS) showed that deposited extracellular matrix on GLAD surfaces is rich in nitrogen. The fabricated ordered surface nanotopographies have potential to be applied in diverse fields, and demonstrate that the behavior of human stem cells can be directed on these ordered nanotopographies, providing new knowledge for applications in biomaterials and tissue engineering.
Collapse
Affiliation(s)
- Peng-Yuan Wang
- Industrial Research Institute Swinburne (IRIS) and Department of Chemistry and Biotechnology, Swinburne University of Technology , Hawthorn, 3122 Victoria, Australia
| | | | | | | | | | | |
Collapse
|
9
|
Yu X, Fan H, Liu Y, Shi Z, Jin Z. Characterization of carbonized polydopamine nanoparticles suggests ordered supramolecular structure of polydopamine. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:5497-505. [PMID: 24773501 DOI: 10.1021/la500225v] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Polydopamine is not only a multifunctional biopolymer with promising optoelectronic properties but it is also a versatile coating platform for different surfaces. The structure and formation of polydopamine is an active area of research. Some studies have supposed that polydopamine is composed of covalently bonded dihydroxyindole, indoledione, and dopamine units, but others proposed that noncovalent self-assembly contributes to polydopamine formation as well. However, it is difficult to directly find the details of supramolecular structure of polydopamine via self-assembly. In this study, we first report the graphite-like nanostructure observed in the carbonized polydopamine nanoparticles in nitrogen (or argon) environment at 800 °C. Raman characterization, which presents the typical D band and G band, confirmed the existence of graphite-like nanostructures. Our observation provides clear evidence for a layered-stacking supramolecular structure of polydopamine. Particularly, the size of graphite-like domains is similar to that of disk-shaped aggregates hypothesized in previous study about the polymerization of 5,6-dihydroxyindole [ Biomacromolecules 2012 , 13 , 2379 ]. Analysis of the hierarchical structure of polydopamine helps us understand its formation.
Collapse
Affiliation(s)
- Xiang Yu
- Department of Chemistry, Renmin University of China , Beijing 100872, P. R. China
| | | | | | | | | |
Collapse
|
10
|
|
11
|
|
12
|
Liu Y, Ai K, Lu L. Polydopamine and Its Derivative Materials: Synthesis and Promising Applications in Energy, Environmental, and Biomedical Fields. Chem Rev 2014; 114:5057-115. [DOI: 10.1021/cr400407a] [Citation(s) in RCA: 3219] [Impact Index Per Article: 321.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yanlan Liu
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- Chinese Academy of Sciences, Beijing 100039, People’s Republic of China
| | - Kelong Ai
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Lehui Lu
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| |
Collapse
|
13
|
Guardingo M, Esplandiu MJ, Ruiz-Molina D. Synthesis of polydopamine at the femtoliter scale and confined fabrication of Ag nanoparticles on surfaces. Chem Commun (Camb) 2014; 50:12548-51. [DOI: 10.1039/c4cc02500h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polydopamine is synthesized in confined femtolitre sized droplets and used as green nanoreactors to fabricate Ag nanoparticles on surfaces.
Collapse
Affiliation(s)
- M. Guardingo
- Centro de Investigacion en Nanociencia y Nanotecnología (CIN2-CSIC) and Institut Catala de Nanociencia i Nanotecnologia (ICN2)
- , Spain
- CSIC - Consejo Superior de Investigaciones Cientificas
- Barcelona, Spain
| | - M. J. Esplandiu
- Centro de Investigacion en Nanociencia y Nanotecnología (CIN2-CSIC) and Institut Catala de Nanociencia i Nanotecnologia (ICN2)
- , Spain
- CSIC - Consejo Superior de Investigaciones Cientificas
- Barcelona, Spain
| | - D. Ruiz-Molina
- Centro de Investigacion en Nanociencia y Nanotecnología (CIN2-CSIC) and Institut Catala de Nanociencia i Nanotecnologia (ICN2)
- , Spain
- CSIC - Consejo Superior de Investigaciones Cientificas
- Barcelona, Spain
| |
Collapse
|
14
|
Beckwith KM, Sikorski P. Patterned cell arrays and patterned co-cultures on polydopamine-modified poly(vinyl alcohol) hydrogels. Biofabrication 2013; 5:045009. [DOI: 10.1088/1758-5082/5/4/045009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
15
|
Malainou A, Tsougeni K, Ellinas K, Petrou PS, Constantoudis V, Sarantopoulou E, Awsiuk K, Bernasik A, Budkowski A, Markou A, Panagiotopoulos I, Kakabakos SE, Gogolides E, Tserepi A. Plasma-Assisted Nanoscale Protein Patterning on Si Substrates via Colloidal Lithography. J Phys Chem A 2013; 117:13743-51. [DOI: 10.1021/jp407810x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Malainou
- Department of Microelectronics, Institute of Advanced Materials, Physicochemical Process, Nanotechnology & Microsystems, NCSR “Demokritos”, 15310 Aghia Paraskevi, Attiki, Greece
| | - K. Tsougeni
- Department of Microelectronics, Institute of Advanced Materials, Physicochemical Process, Nanotechnology & Microsystems, NCSR “Demokritos”, 15310 Aghia Paraskevi, Attiki, Greece
| | - K. Ellinas
- Department of Microelectronics, Institute of Advanced Materials, Physicochemical Process, Nanotechnology & Microsystems, NCSR “Demokritos”, 15310 Aghia Paraskevi, Attiki, Greece
| | - P. S. Petrou
- Immunoassay/Immunosensors Laboratory, Institute of Nuclear and Radiological Sciences & Technology, Energy & Safety, NCSR “Demokritos”, 15310 Aghia Paraskevi, Attiki, Greece
| | - V. Constantoudis
- Department of Microelectronics, Institute of Advanced Materials, Physicochemical Process, Nanotechnology & Microsystems, NCSR “Demokritos”, 15310 Aghia Paraskevi, Attiki, Greece
| | - E. Sarantopoulou
- National Hellenic Research Foundation, Theoretical and Physical Chemistry Institute, 11635, Athens, Greece
| | - K. Awsiuk
- M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
| | - A. Bernasik
- M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
| | - A. Budkowski
- M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
| | - A. Markou
- Department
of Materials Science and Engineering, University of Ioannina, Greece
| | - I. Panagiotopoulos
- Department
of Materials Science and Engineering, University of Ioannina, Greece
| | - S. E. Kakabakos
- Immunoassay/Immunosensors Laboratory, Institute of Nuclear and Radiological Sciences & Technology, Energy & Safety, NCSR “Demokritos”, 15310 Aghia Paraskevi, Attiki, Greece
| | - E. Gogolides
- Department of Microelectronics, Institute of Advanced Materials, Physicochemical Process, Nanotechnology & Microsystems, NCSR “Demokritos”, 15310 Aghia Paraskevi, Attiki, Greece
| | - A. Tserepi
- Department of Microelectronics, Institute of Advanced Materials, Physicochemical Process, Nanotechnology & Microsystems, NCSR “Demokritos”, 15310 Aghia Paraskevi, Attiki, Greece
| |
Collapse
|
16
|
Teo BM, van der Westen R, Hosta-Rigau L, Städler B. Cell response to PEGylated poly(dopamine) coated liposomes considering shear stress. Biochim Biophys Acta Gen Subj 2013; 1830:4838-47. [DOI: 10.1016/j.bbagen.2013.06.022] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 06/06/2013] [Accepted: 06/17/2013] [Indexed: 12/13/2022]
|
17
|
Zhang Y, Teo BM, Postma A, Ercole F, Ogaki R, Zhu M, Städler B. Highly-Branched Poly(N-isopropylacrylamide) as a Component in Poly(dopamine) Films. J Phys Chem B 2013; 117:10504-12. [DOI: 10.1021/jp407106z] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yan Zhang
- State
Key Laboratory for Modification of Chemical Fibers and Polymer Materials,
College of Material Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
- iNANO
Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark
| | - Boon M. Teo
- iNANO
Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark
| | - Almar Postma
- Ian
Wark Laboratory, CSIRO Materials Science and Engineering, Bayview
Avenue, Clayton, Victoria 3168, Australia
| | - Francesca Ercole
- Department
of Materials Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Ryosuke Ogaki
- iNANO
Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark
| | - Meifang Zhu
- State
Key Laboratory for Modification of Chemical Fibers and Polymer Materials,
College of Material Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
| | - Brigitte Städler
- iNANO
Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark
| |
Collapse
|
18
|
Pi F, Dillard P, Limozin L, Charrier A, Sengupta K. Nanometric protein-patch arrays on glass and polydimethylsiloxane for cell adhesion studies. NANO LETTERS 2013; 13:3372-8. [PMID: 23808889 DOI: 10.1021/nl401696m] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
We present a simple cost-effective benchtop protocol to functionalize glass and polydimethylsiloxane (PDMS) with nanometric protein patches for cell adhesion studies. Evaporation masks, covering macroscopic areas on glass, were made using improved strategies for self-assembly of colloidal microbeads which then served as templates for creating the protein patch arrays via the intermediate steps of organo-aminosilane deposition and polyethylene-glycol grafting. The diameter of the patches could be varied down to about 80 nm. The glass substrates were used for advanced optical imaging of T-lymphocytes to explore adhesion by reflection interference contrast microscopy and the possible colocalization of T-cell receptor microclusters and the activating protein patches by total internal reflection fluorescence microscopy. The selectively functionalized glass could also serve as template for transferring the protein nanopatches to the surface of a soft elastomer. We demonstrated successful reverse contact printing onto the surface of thin layers of PDMS with stiffness ranging from 30 KPa to 3 MPa.
Collapse
Affiliation(s)
- Fuwei Pi
- Aix-Marseille Université , CNRS, CINaM UMR 7325, 13288 Marseille, France
| | | | | | | | | |
Collapse
|
19
|
Saito Y, Kawano T, Shimomura M, Yabu H. Fabrication of Mussel-Inspired Highly Adhesive Honeycomb Films Containing Catechol Groups and Their Applications for Substrate-Independent Porous Templates. Macromol Rapid Commun 2013; 34:630-4. [DOI: 10.1002/marc.201200839] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2012] [Revised: 02/04/2013] [Indexed: 11/06/2022]
|
20
|
Lynge ME, Teo BM, Laursen MB, Zhang Y, Städler B. Cargo delivery to adhering myoblast cells from liposome-containing poly(dopamine) composite coatings. Biomater Sci 2013; 1:1181-1192. [DOI: 10.1039/c3bm60107b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
21
|
Ma H, Gao P, Zhang Y, Fan D, Li G, Du B, Wei Q. Engineering microstructured porous films for multiple applications via mussel-inspired surface coating. RSC Adv 2013. [DOI: 10.1039/c3ra44812f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|