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Mishra S, Ghosh A, Hansda B, Mondal TK, Biswas T, Das B, Roy D, Kumari P, Mondal S, Mandal B. Activation of Inert Supports for Enzyme(s) Immobilization Harnessing Biocatalytic Sustainability for Perennial Utilization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:18377-18406. [PMID: 39171729 DOI: 10.1021/acs.langmuir.4c00488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
Although Nature's evolution and intelligence have gifted humankind with noteworthy enzyme candidates to simplify complex reactions with ultrafast, overselective, effortless, mild biological reactions for millions of years, their availability at minute-scale, short-range time-temperature stability, and purification costs hardly justify recycling/or reuse. Covalent immobilization, particularly via multipoint bonds, prevents denaturing, maintains activities for long-range time, pH, and temperature, and makes catalysts available for repetitive usages; which attracts researchers and industries to bring more immobilized enzyme contenders in science and commercial progressions. Inert-support activation, the most crucial step, needs appropriate activators; under mild conditions, the activator's functional group(s) still present on the activated support rapidly couples the enzyme, preventing unfolding and keeping the active site alive. This review summarizes exciting experimental advances, from the 1950s until today, in the activation strategies of various inert supports with five different surface activators, the cyanogen bromide, the isocyanate/isothiocyanate, the glutaraldehyde, the carbodiimide (with or without N-hydroxysuccinimide (NHS)), and the diazo group, for the immobilization of diverse enzymes for broader applications. These activators under mild pH (7.5 ± 0.5) and temperature (27 ± 3 °C) and ordinary stirring witnessed support activation and enzyme coupling and put off unfolding, harnessing addressable activities (CNBr: 40 ± 10%; -N═C═O/-N═C═S: 32 ± 7%; GA: 70 ± 15%; CDI: 60 ± 10%; -N+≡N: 80 ± 15%), while underprivileged stability, longevity, and reusabilities keep future investigations alive.
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Affiliation(s)
- Shailja Mishra
- Analytical and Bio-analytical Laboratory, Department of Chemistry, Visva-Bharati, Santiniketan, West Bengal, India 731235
| | - Ankit Ghosh
- Analytical and Bio-analytical Laboratory, Department of Chemistry, Visva-Bharati, Santiniketan, West Bengal, India 731235
| | - Biswajit Hansda
- Analytical and Bio-analytical Laboratory, Department of Chemistry, Visva-Bharati, Santiniketan, West Bengal, India 731235
| | - Tanay K Mondal
- Analytical and Bio-analytical Laboratory, Department of Chemistry, Visva-Bharati, Santiniketan, West Bengal, India 731235
| | - Tirtha Biswas
- Analytical and Bio-analytical Laboratory, Department of Chemistry, Visva-Bharati, Santiniketan, West Bengal, India 731235
| | - Basudev Das
- Analytical and Bio-analytical Laboratory, Department of Chemistry, Visva-Bharati, Santiniketan, West Bengal, India 731235
| | - Dipika Roy
- Department of Chemistry, Jadavpur University, Main Campus 188, Raja S.C. Mallick Rd, Kolkata, West Bengal, India 700032
| | - Pallavi Kumari
- University Department of Chemistry, T.M.B.U., Bhagalpur, Bihar-812007, India
| | - Sneha Mondal
- Analytical and Bio-analytical Laboratory, Department of Chemistry, Visva-Bharati, Santiniketan, West Bengal, India 731235
| | - Bhabatosh Mandal
- Analytical and Bio-analytical Laboratory, Department of Chemistry, Visva-Bharati, Santiniketan, West Bengal, India 731235
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Shpun G, Markus A, Farah N, Zalevsky Z, Mandel Y. Adhesion of retinal cells to gold surfaces by biomimetic molecules. Front Cell Dev Biol 2024; 12:1438716. [PMID: 39263323 PMCID: PMC11387177 DOI: 10.3389/fcell.2024.1438716] [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: 05/26/2024] [Accepted: 08/15/2024] [Indexed: 09/13/2024] Open
Abstract
Background Neural cell-electrode coupling is crucial for effective neural and retinal prostheses. Enhancing this coupling can be achieved through surface modification and geometrical design to increase neuron-electrode proximity. In the current research, we focused on designing and studying various biomolecules as a method to elicit neural cell-electrode adhesion via cell-specific integrin mechanisms. Methods We designed extracellular matrix biomimetic molecules with different head sequences (RGD or YIGSR), structures (linear or cyclic), and spacer lengths (short or long). These molecules, anchored by a thiol (SH) group, were deposited onto gold surfaces at various concentrations. We assessed the modifications using contact angle measurements, fluorescence imaging, and X-ray Photoelectron Spectroscopy (XPS). We then analyzed the adhesion of retinal cells and HEK293 cells to the modified surfaces by measuring cell density, surface area, and focal adhesion spots, and examined changes in adhesion-related gene and integrin expression. Results Results showed that YIGSR biomolecules significantly enhanced retinal cell adhesion, regardless of spacer length. For HEK293 cells, RGD biomolecules were more effective, especially with cyclic RGD and long spacers. Both cell types showed increased expression of specific adhesion integrins and proteins like vinculin and PTK2; these results were in agreement with the adhesion studies, confirming the cell-specific interactions with modified surfaces. Conclusion This study highlights the importance of tailored biomolecules for improving neural cell adhesion to electrodes. By customizing biomolecules to foster specific and effective interactions with adhesion integrins, our study provides valuable insights for enhancing the integration and functionality of retinal prostheses and other neural implants.
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Affiliation(s)
- Gal Shpun
- The Alexander Kofkin Faculty of Engineering, Bar Ilan University, Ramat Gan, Israel
- School of Optometry and Visual Science, Faculty of Life Sciences, Bar Ilan University, Ramat Gan, Israel
- Bar Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar Ilan University, Ramat Gan, Israel
| | - Amos Markus
- School of Optometry and Visual Science, Faculty of Life Sciences, Bar Ilan University, Ramat Gan, Israel
- Bar Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar Ilan University, Ramat Gan, Israel
| | - Nairouz Farah
- School of Optometry and Visual Science, Faculty of Life Sciences, Bar Ilan University, Ramat Gan, Israel
- Bar Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar Ilan University, Ramat Gan, Israel
| | - Zeev Zalevsky
- The Alexander Kofkin Faculty of Engineering, Bar Ilan University, Ramat Gan, Israel
- Bar Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar Ilan University, Ramat Gan, Israel
| | - Yossi Mandel
- School of Optometry and Visual Science, Faculty of Life Sciences, Bar Ilan University, Ramat Gan, Israel
- Bar Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar Ilan University, Ramat Gan, Israel
- The Gonda Multidisciplinary Brain Research Centre, Bar-Ilan University, Ramat Gan, Israel
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Tudureanu R, Handrea-Dragan IM, Boca S, Botiz I. Insight and Recent Advances into the Role of Topography on the Cell Differentiation and Proliferation on Biopolymeric Surfaces. Int J Mol Sci 2022; 23:7731. [PMID: 35887079 PMCID: PMC9315624 DOI: 10.3390/ijms23147731] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/11/2022] [Accepted: 07/11/2022] [Indexed: 01/27/2023] Open
Abstract
It is well known that surface topography plays an important role in cell behavior, including adhesion, migration, orientation, elongation, proliferation and differentiation. Studying these cell functions is essential in order to better understand and control specific characteristics of the cells and thus to enhance their potential in various biomedical applications. This review proposes to investigate the extent to which various surface relief patterns, imprinted in biopolymer films or in polymeric films coated with biopolymers, by utilizing specific lithographic techniques, influence cell behavior and development. We aim to understand how characteristics such as shape, dimension or chemical functionality of surface relief patterns alter the orientation and elongation of cells, and thus, finally make their mark on the cell proliferation and differentiation. We infer that such an insight is a prerequisite for pushing forward the comprehension of the methodologies and technologies used in tissue engineering applications and products, including skin or bone implants and wound or fracture healing.
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Affiliation(s)
- Raluca Tudureanu
- Interdisciplinary Research Institute in Bio-Nano-Sciences, Babeș-Bolyai University, 400271 Cluj-Napoca, Romania; (R.T.); (I.M.H.-D.); (S.B.)
- Faculty of Physics, Babeș-Bolyai University, 400084 Cluj-Napoca, Romania
| | - Iuliana M. Handrea-Dragan
- Interdisciplinary Research Institute in Bio-Nano-Sciences, Babeș-Bolyai University, 400271 Cluj-Napoca, Romania; (R.T.); (I.M.H.-D.); (S.B.)
- Faculty of Physics, Babeș-Bolyai University, 400084 Cluj-Napoca, Romania
| | - Sanda Boca
- Interdisciplinary Research Institute in Bio-Nano-Sciences, Babeș-Bolyai University, 400271 Cluj-Napoca, Romania; (R.T.); (I.M.H.-D.); (S.B.)
| | - Ioan Botiz
- Interdisciplinary Research Institute in Bio-Nano-Sciences, Babeș-Bolyai University, 400271 Cluj-Napoca, Romania; (R.T.); (I.M.H.-D.); (S.B.)
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Mao M, He J, Li Z, Han K, Li D. Multi-directional cellular alignment in 3D guided by electrohydrodynamically-printed microlattices. Acta Biomater 2020; 101:141-151. [PMID: 31669696 DOI: 10.1016/j.actbio.2019.10.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 10/20/2019] [Accepted: 10/22/2019] [Indexed: 01/30/2023]
Abstract
Recapitulating aligned cellular architectures of native tissues in vitro is important to engineer artificial tissue analogs with desired biological functions. Here a novel strategy is presented to direct three-dimensional (3D) cellular alignment by embedding cell/collagen hydrogel into the predefined electrohydrodynamically-printed microlattices. The cell/collagen hydrogel, originally filled within the printed microlattices uniformly, was found to gradually develop into densely-populated and highly-aligned bands along the longitudinal direction of the printed microlattices. The cellular alignment was highly dependent on the height, spacing and orientation of the microlattices. The presented method was applicable to multiple cell types including primary cardiomyocytes and the gaps formed between the aligned bands and the lateral walls of the microlattice facilitated the subsequent seeding and rapid alignment of other cell types which enables to engineer anisotropic multicellular tissue constructs. The engineered cardiac patches expressed mature cardiomyocyte-specific phenotypes and exhibited synchronous contractive activities. Multilayer cellular alignment with varied orientation in 3D collagen hydrogel was successfully achieved by using electrohydrodynamically-printed microlattices with layer-specific orientations. This exploration offers a promising way to engineer complex 3D tissue constructs with predefined cellular alignments. STATEMENT OF SIGNIFICANCE: Fabrication of biomimetic highly-aligned complex cellular architectures has a great significance to recapitulate the unique mechanical and physiological functions of the engineered tissues (e.g., heart tissue, neuron, muscle). Here, we introduced a novel strategy to direct 3D cellular alignment by embedding cell/collagen hydrogel into the predefined electrohydrodynamically-printed microlattices without any external stimuli. The microscopical study of the dynamic alignment process of cells and collagen fibers contributed to exploring the mechanism of autonomous formation of highly-aligned cellular bands. Multilayer cellular alignment with varied orientation in 3D collagen hydrogel was successfully achieved by using the microlattices with layer-specific orientations, which showed a promising way to engineer complex 3D tissue constructs with predefined cellular alignments.
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Siloxane-functionalised surface patterns as templates for the ordered deposition of thin lamellar objects. Sci Rep 2019; 9:17952. [PMID: 31784635 PMCID: PMC6884528 DOI: 10.1038/s41598-019-54507-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 11/13/2019] [Indexed: 11/08/2022] Open
Abstract
A novel method is demonstrated for ordered deposition of thin lamellar objects from a liquid environment onto solid substrates by solid/fluid/solid-driven organisation. Surface functionalisation forms a template pattern that accumulates the lamellar objects by site-selective wetting of the target area without the need for a physical fluid containment. Contrary to conventional handling methods, no mechanical contact occurs, which facilitates the ordered deposition without wrinkles or ruptures. An additive and a subtractive process for the creation of such templates are presented. The subtractive process starts with the complete silanisation of the substrate in the vapour phase followed by site-selective oxygen plasma treatment of the siloxane film. The additive process uses microcontact printing to transfer the target pattern. Both processes are characterised by optical inspection of the wetting contours and it is found that site-selective plasma treatment shows a better pattern fidelity. The patterns obtained by site-selective plasma treatment are also subject to ToF-SIMS analysis and show good chemical contrast between hydrophilic and hydrophobic areas. The ordered deposition of lamellar objects by this new method is demonstrated for 60 nm thick ultramicrotome sections of epoxide resin on pre-patterned glass substrates.
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Yao X, Liu R, Liang X, Ding J. Critical Areas of Proliferation of Single Cells on Micropatterned Surfaces and Corresponding Cell Type Dependence. ACS APPLIED MATERIALS & INTERFACES 2019; 11:15366-15380. [PMID: 30964630 DOI: 10.1021/acsami.9b03780] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Material cues to influence cell proliferation are a fundamental issue in the fields of biomaterials, cell biology, tissue engineering, and regenerative medicine. This paper aims to investigate the proliferation of single mammal cells on micropatterned material surfaces. To this end, we prepared cell-adhesive circular microislands with 20 areas on the nonfouling background and systematically examined adhesion and proliferation behaviors of different kinds of single cells (primary stem and nonstem cells, cancer and normal cell lines) on micropatterns. On the basis of the analysis of experimental data, we found two critical areas about cell proliferation: (1) the critical spreading area of cells from almost no proliferation to confined proliferation, denoted as AP and (2) the critical spreading area of cells from confined proliferation to almost free proliferation, denoted as AFP. We further summarized the relative size relationship between these two critical areas and the characteristic areas of cell adhesion on both patterned and nonpatterned surfaces. While proliferation of single primary cells was affected by cell spreading, those cell lines, irrespective of normal and cancer cells, did not exhibit significant cell-spreading effects. As a result, this study reveals that proliferation of single cells is dependent upon spreading area, in particular for primary cells on material surfaces.
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Affiliation(s)
- Xiang Yao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200438 , People's Republic of China
| | - Ruili Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200438 , People's Republic of China
| | - Xiangyu Liang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200438 , People's Republic of China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200438 , People's Republic of China
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Roopesh Kumar L, Panduranga V, Vishwanatha TM, Shekharappa, Sureshbabu VV. Synthesis of thioureido peptidomimetics employing alkyl azides and dithiocarbamates. Org Biomol Chem 2019. [PMID: 29528353 DOI: 10.1039/c8ob00239h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
An unprecedented approach for the assembly of thioureido peptidomimetics is developed employing alkyl azides and dithiocarbamates. Dithiocarbamates react with alkyl azides with the liberation of N2 and elemental sulfur thereby leading to thiourea in a traceless manner. Thioureido peptidomimetics are thus furnished in good yields with no epimerization. This process is mild, free from the use of a base, scalable and step economic. The practicability of this methodology has been highlighted by the synthesis of N,N'-orthogonally protected thioureido peptidomimetics.
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Affiliation(s)
- L Roopesh Kumar
- Room No. 109, Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus, Dr. B. R. Ambedkar Veedhi, Bangalore University, Bangalore, 560001, India.
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Damia C, Marchat D, Lemoine C, Douard N, Chaleix V, Sol V, Larochette N, Logeart-Avramoglou D, Brie J, Champion E. Functionalization of phosphocalcic bioceramics for bone repair applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 95:343-354. [PMID: 30573258 DOI: 10.1016/j.msec.2018.01.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 09/18/2017] [Accepted: 01/28/2018] [Indexed: 01/05/2023]
Abstract
This work is devoted to the processing of bone morphogenetic protein (BMP-2) functionalized silicate substituted hydroxyapatite (SiHA) ceramic spheres. The motivation behind it is to develop injectable hydrogel/bioceramic composites for bone reconstruction applications. SiHA microspheres were shaped by spray drying and thoroughly characterized. The silicate substitution was used to provide preferred chemical sites at the ceramic surface for the covalent immobilization of BMP-2. In order to control the density and the release of the immobilized BMP-2, its grafting was performed via ethoxysilanes and polyethylene glycols. A method based on Kaiser's test was used to quantify the free amino groups of grafted organosilanes available at the ceramic surface for BMP-2 immobilization. The SiHA surface modification was investigated by means of X-ray photoelectron spectroscopy, Fourier transformed infrared spectroscopy and thermogravimetry coupled with mass spectrometry. The BMP-2 bioactivity was assessed, in vitro, by measuring the luciferase expression of a stably transfected C3H10 cell line (C3H10-BRE/Luc cells). The results provided evidence that the BMP-2 grafted onto SiHA spheres remained bioactive.
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Affiliation(s)
- Chantal Damia
- Univ. Limoges, CNRS, IRCER, UMR 7315, F-87000 Limoges, France.
| | - David Marchat
- Ecole Nationale Supérieure des Mines, CIS-EMSE, INSERM U1059, 158 cours Fauriel, F-42023 Saint-Etienne cedex 2, France
| | - Charly Lemoine
- Univ. Limoges, CNRS, IRCER, UMR 7315, F-87000 Limoges, France
| | - Nathalie Douard
- Ecole Nationale Supérieure des Mines, CIS-EMSE, INSERM U1059, 158 cours Fauriel, F-42023 Saint-Etienne cedex 2, France
| | | | - Vincent Sol
- Univ. Limoges, LCSN EA 1069, F-87000 Limoges, France
| | - Nathanaël Larochette
- Laboratory of Bioengineering and Bioimaging for Osteo-Articular tissues, UMR 7052, CNRS, Paris Diderot University, Sorbonne Paris Cité, Paris, France
| | - Delphine Logeart-Avramoglou
- Laboratory of Bioengineering and Bioimaging for Osteo-Articular tissues, UMR 7052, CNRS, Paris Diderot University, Sorbonne Paris Cité, Paris, France
| | - Joël Brie
- Univ. Limoges, CNRS, IRCER, UMR 7315, F-87000 Limoges, France; CHU Limoges, Service de Chirurgie Maxillo-Faciale, F-87000, Limoges, France
| | - Eric Champion
- Univ. Limoges, CNRS, IRCER, UMR 7315, F-87000 Limoges, France
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Bag SS, De S. Isothiocyanyl Alanine as a Synthetic Intermediate for the Synthesis of Thioureayl Alanines and Subsequent Aminotetrazolyl Alanines. J Org Chem 2017; 82:12276-12285. [PMID: 29065260 DOI: 10.1021/acs.joc.7b02103] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The synthesis of unnatural amino acids with small side-chain functionalities usable for further transformations is highly demanding for the expansion of the genetic code and other possible biotechnological applications. To this end, we wanted to report the utility of an unexplored unnatural amino acid, isothiocyanyl alanine (NCSAla = Ita), for the synthesis of another class of unnatural amino acids, thioureayl alanines (TUAla = Tua). The synthesis of a third class of unnatural amino acids, amino tetrazolyl alanines (ATzAla = Ata), in a very good yield was subsequently achieved utilizing thioureayl alanines. Thus, a variety of aliphatic- and aromatic-substituted thioureayl alanines and aromatic-substituted amino tetrazolyl alanines were successfully synthesized in good to excellent yields. The photophysical properties of three of the fluorescent unnatural amino acids from two classes were also studied and presented herein.
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Affiliation(s)
- Subhendu Sekhar Bag
- Bioorganic Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Guwahati 781039, India
| | - Suranjan De
- Bioorganic Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Guwahati 781039, India
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Ristori T, Vigliotti A, Baaijens FPT, Loerakker S, Deshpande VS. Prediction of Cell Alignment on Cyclically Strained Grooved Substrates. Biophys J 2017; 111:2274-2285. [PMID: 27851949 DOI: 10.1016/j.bpj.2016.09.052] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 09/13/2016] [Accepted: 09/28/2016] [Indexed: 11/27/2022] Open
Abstract
Cells respond to both mechanical and topographical stimuli by reorienting and reorganizing their cytoskeleton. Under certain conditions, such as for cells on cyclically stretched grooved substrates, the effects of these stimuli can be antagonistic. The biophysical processes that lead to the cellular reorientation resulting from such a competition are not clear yet. In this study, we hypothesized that mechanical cues and the diffusion of the intracellular signal produced by focal adhesions are determinants of the final cellular alignment. This hypothesis was investigated by means of a computational model, with the aim to simulate the (re)orientation of cells cultured on cyclically stretched grooved substrates. The computational results qualitatively agree with previous experimental studies, thereby supporting our hypothesis. Furthermore, cellular behavior resulting from experimental conditions different from the ones reported in the literature was simulated, which can contribute to the development of new experimental designs.
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Affiliation(s)
- Tommaso Ristori
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands; Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Andrea Vigliotti
- Innovative Materials Laboratory, Italian Aerospace Research Centre, Capua, Italy
| | - Frank P T Baaijens
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands; Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Sandra Loerakker
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands; Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands.
| | - Vikram S Deshpande
- Department of Engineering, University of Cambridge, Cambridge, United Kingdom
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Pallarola D, Platzman I, Bochen A, Cavalcanti-Adam EA, Axmann M, Kessler H, Geiger B, Spatz JP. Focal adhesion stabilization by enhanced integrin-cRGD binding affinity. ACTA ACUST UNITED AC 2017. [DOI: 10.1515/bnm-2016-0014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
AbstractIn this study we investigate the impact of ligand presentation by various molecular spacers on integrin-based focal adhesion formation. Gold nanoparticles (AuNPs) arranged in hexagonal patterns were biofunctionalized with the same ligand head group, cyclic Arg-Gly-Asp [
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12
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Wang Q, Huang H, Wei K, Zhao Y. Time-dependent combinatory effects of active mechanical loading and passive topographical cues on cell orientation. Biotechnol Bioeng 2016; 113:2191-201. [PMID: 27003791 DOI: 10.1002/bit.25981] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 03/14/2016] [Accepted: 03/15/2016] [Indexed: 02/02/2023]
Abstract
Mechanical stretching and topographical cues are both effective mechanical stimulations for regulating cell morphology, orientation, and behaviors. The competition of these two mechanical stimulations remains largely underexplored. Previous studies have suggested that a small cyclic mechanical strain is not able to reorient cells that have been pre-aligned by relatively large linear microstructures, but can reorient those pre-aligned by small linear micro/nanostructures if the characteristic dimension of these structures is below a certain threshold. Likewise, for micro/nanostructures with a given characteristic dimension, the strain must exceed a certain magnitude to overrule the topographic cues. There are however no in-depth investigations of such "thresholds" due to the lack of close examination of dynamic cell orientation during and shortly after the mechanical loading. In this study, the time-dependent combinatory effects of active and passive mechanical stimulations on cell orientation are investigated by developing a micromechanical stimulator. The results show that the cells pre-aligned by linear micro/nanostructures can be altered by cyclic in-plane strain, regardless of the structure size. During the loading, the micro/nanostructures can resist the reorientation effects by cyclic in-plane strain while the resistive capability (measured by the mean orientation angle change and the reorientation speed) increases with the increasing characteristic dimension. The micro/nanostructures also can recover the cell orientation after the cessation of cyclic in-plane strain, while the recovering capability increases with the characteristic dimension. The previously observed thresholds are largely dependent on the observation time points. In order to accurately evaluate the combinatory effects of the two mechanical stimulations, observations during the active loading with a short time interval or endpoint observations shortly after the loading are preferred. This study provides a microengineering solution to investigate the time-dependent combinatory effects of the active and passive mechanical stimulations and is expected to enhance our understanding of cell responses to complex mechanical environments. Biotechnol. Bioeng. 2016;113: 2191-2201. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Qian Wang
- Laboratory for Biomedical Microsystems, Department of Biomedical Engineering, The Ohio State University, 294 Bevis Hall, 1080 Carmack Road, Columbus, Ohio
| | - Hanyang Huang
- Laboratory for Biomedical Microsystems, Department of Biomedical Engineering, The Ohio State University, 294 Bevis Hall, 1080 Carmack Road, Columbus, Ohio
| | - Kang Wei
- Laboratory for Biomedical Microsystems, Department of Biomedical Engineering, The Ohio State University, 294 Bevis Hall, 1080 Carmack Road, Columbus, Ohio
| | - Yi Zhao
- Laboratory for Biomedical Microsystems, Department of Biomedical Engineering, The Ohio State University, 294 Bevis Hall, 1080 Carmack Road, Columbus, Ohio.
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Effects of substrate conductivity on cell morphogenesis and proliferation using tailored, atomic layer deposition-grown ZnO thin films. Sci Rep 2015; 5:9974. [PMID: 25897486 PMCID: PMC4404712 DOI: 10.1038/srep09974] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 03/24/2015] [Indexed: 01/08/2023] Open
Abstract
We demonstrate that ZnO films grown by atomic layer deposition (ALD) can be employed as a substrate to explore the effects of electrical conductivity on cell adhesion, proliferation, and morphogenesis. ZnO substrates with precisely tunable electrical conductivity were fabricated on glass substrates using ALD deposition. The electrical conductivity of the film increased linearly with increasing duration of the ZnO deposition cycle (thickness), whereas other physical characteristics, such as surface energy and roughness, tended to saturate at a certain value. Differences in conductivity dramatically affected the behavior of SF295 glioblastoma cells grown on ZnO films, with high conductivity (thick) ZnO films causing growth arrest and producing SF295 cell morphologies distinct from those cultured on insulating substrates. Based on simple electrostatic calculations, we propose that cells grown on highly conductive substrates may strongly adhere to the substrate without focal-adhesion complex formation, owing to the enhanced electrostatic interaction between cells and the substrate. Thus, the inactivation of focal adhesions leads to cell proliferation arrest. Taken together, the work presented here confirms that substrates with high conductivity disturb the cell-substrate interaction, producing cascading effects on cellular morphogenesis and disrupting proliferation, and suggests that ALD-grown ZnO offers a single-variable method for uniquely tailoring conductivity.
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Yu H, Mei S, Zhao L, Zhao M, Wang Y, Zhu H, Wang Y, Wu J, Cui C, Xu W, Peng S. RGD-peptides modifying dexamethasone: to enhance the anti-inflammatory efficacy and limit the risk of osteoporosis. MEDCHEMCOMM 2015. [DOI: 10.1039/c5md00215j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
RGD-peptides modifying dexamethasone can enhance the anti-inflammatory efficacy and limit the risk of osteoporosis.
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Affiliation(s)
- Hualong Yu
- Beijing area major laboratory of peptide and small molecular drugs
- Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China
- Beijing Laboratory of Biomedical Materials, College of Pharmaceutical Sciences
- of Capital Medical University
- Beijing 100069
| | - Shenghui Mei
- Beijing area major laboratory of peptide and small molecular drugs
- Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China
- Beijing Laboratory of Biomedical Materials, College of Pharmaceutical Sciences
- of Capital Medical University
- Beijing 100069
| | - Li Zhao
- School of Life Science
- Jiangxi Normal University of Science and Technology
- Nanchang
- China
| | - Ming Zhao
- Beijing area major laboratory of peptide and small molecular drugs
- Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China
- Beijing Laboratory of Biomedical Materials, College of Pharmaceutical Sciences
- of Capital Medical University
- Beijing 100069
| | - Yuji Wang
- Beijing area major laboratory of peptide and small molecular drugs
- Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China
- Beijing Laboratory of Biomedical Materials, College of Pharmaceutical Sciences
- of Capital Medical University
- Beijing 100069
| | - Haimei Zhu
- Beijing area major laboratory of peptide and small molecular drugs
- Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China
- Beijing Laboratory of Biomedical Materials, College of Pharmaceutical Sciences
- of Capital Medical University
- Beijing 100069
| | - Yaonan Wang
- Beijing area major laboratory of peptide and small molecular drugs
- Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China
- Beijing Laboratory of Biomedical Materials, College of Pharmaceutical Sciences
- of Capital Medical University
- Beijing 100069
| | - Jianhui Wu
- Beijing area major laboratory of peptide and small molecular drugs
- Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China
- Beijing Laboratory of Biomedical Materials, College of Pharmaceutical Sciences
- of Capital Medical University
- Beijing 100069
| | - Chunying Cui
- Beijing area major laboratory of peptide and small molecular drugs
- Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China
- Beijing Laboratory of Biomedical Materials, College of Pharmaceutical Sciences
- of Capital Medical University
- Beijing 100069
| | - Wenyun Xu
- Beijing area major laboratory of peptide and small molecular drugs
- Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China
- Beijing Laboratory of Biomedical Materials, College of Pharmaceutical Sciences
- of Capital Medical University
- Beijing 100069
| | - Shiqi Peng
- Beijing area major laboratory of peptide and small molecular drugs
- Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China
- Beijing Laboratory of Biomedical Materials, College of Pharmaceutical Sciences
- of Capital Medical University
- Beijing 100069
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15
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Li Y, Huang G, Zhang X, Wang L, Du Y, Lu TJ, Xu F. Engineering cell alignment in vitro. Biotechnol Adv 2014; 32:347-65. [DOI: 10.1016/j.biotechadv.2013.11.007] [Citation(s) in RCA: 171] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Revised: 11/16/2013] [Accepted: 11/17/2013] [Indexed: 01/03/2023]
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16
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Pallarola D, Bochen A, Boehm H, Rechenmacher F, Sobahi TR, Spatz JP, Kessler H. Interface Immobilization Chemistry of cRGD-based Peptides Regulates Integrin Mediated Cell Adhesion. ADVANCED FUNCTIONAL MATERIALS 2014; 24:943-956. [PMID: 25810710 PMCID: PMC4368046 DOI: 10.1002/adfm.201302411] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 08/28/2013] [Indexed: 05/29/2023]
Abstract
The interaction of specific surface receptors of the integrin family with different extracellular matrix-based ligands is of utmost importance for the cellular adhesion process. A ligand consists of an integrin-binding group, here cyclic RGDfX, a spacer molecule that lifts the integrin-binding group from the surface and a surface anchoring group. c(-RGDfX-) peptides are bound to gold nanoparticle structured surfaces via polyproline, polyethylene glycol or aminohexanoic acid containing spacers of different lengths. Although keeping the integrin-binding c(-RGDfX-) peptides constant for all compounds, changes of the ligand's spacer chemistry and length reveal significant differences in cell adhesion activation and focal adhesion formation. Polyproline-based peptides demonstrate improved cell adhesion kinetics and focal adhesion formation compared with common aminohexanoic acid or polyethylene glycol spacers. Binding activity can additionally be improved by applying ligands with two head groups, inducing a multimeric effect. This study gives insights into spacer-based differences in integrin-driven cell adhesion processes and remarkably highlights the polyproline-based spacers as suitable ligand-presenting templates for surface functionalization.
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Affiliation(s)
- Diego Pallarola
- Department of New Materials and Biosystems, Max Planck Institute for intelligent Systems Heisenbergstr. 3, 70569, Stuttgart, Germany ; Department of Biophysical Chemistry, University of Heidelberg 69120, Heidelberg, Germany
| | - Alexander Bochen
- Institute for Advanced Study and Center for Integrated Protein Science Department Chemie, Technische Universität München Lichtenbergstr. 4, 85747, Garching, Germany
| | - Heike Boehm
- Department of New Materials and Biosystems, Max Planck Institute for intelligent Systems Heisenbergstr. 3, 70569, Stuttgart, Germany ; Department of Biophysical Chemistry, University of Heidelberg 69120, Heidelberg, Germany ; CSF Biomaterials and Cellular Biophysics, Max Planck Institute for Intelligent Systems Heisenbergstr. 3, 70569, Stuttgart, Germany
| | - Florian Rechenmacher
- Institute for Advanced Study and Center for Integrated Protein Science Department Chemie, Technische Universität München Lichtenbergstr. 4, 85747, Garching, Germany
| | - Tariq R Sobahi
- Chemistry Department Faculty of Science, King Abdulaziz University P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Joachim P Spatz
- Department of New Materials and Biosystems, Max Planck Institute for intelligent Systems Heisenbergstr. 3, 70569, Stuttgart, Germany
| | - Horst Kessler
- Institute for Advanced Study and Center for Integrated Protein Science Department Chemie, Technische Universität München Lichtenbergstr. 4, 85747, Garching, Germany ; Chemistry Department Faculty of Science, King Abdulaziz University P.O. Box 80203, Jeddah 21589, Saudi Arabia
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17
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Yao X, Peng R, Ding J. Cell-material interactions revealed via material techniques of surface patterning. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:5257-5286. [PMID: 24038153 DOI: 10.1002/adma.201301762] [Citation(s) in RCA: 358] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 07/15/2013] [Indexed: 06/02/2023]
Abstract
Cell-material interactions constitute a key fundamental topic in biomaterials study. Various cell cues and matrix cues as well as soluble factors regulate cell behaviors on materials. These factors are coupled with each other as usual, and thus it is very difficult to unambiguously elucidate the role of each regulator. The recently developed material techniques of surface patterning afford unique ways to reveal the underlying science. This paper reviews the pertinent material techniques to fabricate patterns of microscale and nanoscale resolutions, and corresponding cell studies. Some issues are emphasized, such as cell localization on patterned surfaces of chemical contrast, and effects of cell shape, cell size, cell-cell contact, and seeding density on differentiation of stem cells. Material cues to regulate cell adhesion, cell differentiation and other cell events are further summed up. Effects of some physical properties, such as surface topography and matrix stiffness, on cell behaviors are also discussed; nanoscaled features of substrate surfaces to regulate cell fate are summarized as well. The pertinent work sheds new insight into the cell-material interactions, and is stimulating for biomaterial design in regenerative medicine, tissue engineering, and high-throughput detection, diagnosis, and drug screening.
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Affiliation(s)
- Xiang Yao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University, 200433, Shanghai, China
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18
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Jin S, Wang Y, Zhu H, Wang Y, Zhao S, Zhao M, Liu J, Wu J, Gao W, Peng S. Nanosized aspirin-Arg-Gly-Asp-Val: delivery of aspirin to thrombus by the target carrier Arg-Gly-Asp-Val tetrapeptide. ACS NANO 2013; 7:7664-73. [PMID: 23931063 DOI: 10.1021/nn402171v] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Resistance and nonresponse to aspirin dramatically decreases its therapeutic efficacy. To overcome this issue, a small-molecule thrombus-targeting drug delivery system, aspirin-Arg-Gly-Asp-Val (A-RGDV), is developed by covalently linking Arg-Gly-Asp-Val tetrapeptide with aspirin. The 2D ROESY NMR and ESI-MS spectra support a molecular model of an A-RGDV tetramer. Transmission electron microscopy images suggest that the tetramer spontaneously assembles to nanoparticles (ranging from 5 to 50 nm in diameter) in water. Scanning electron microscopy images and atomic force microscopy images indicate that the smaller nanoparticles of A-RGDV further assemble to bigger particles that are stable in rat blood. The delivery investigation implies that in rat blood A-RGDV is able to keep its molecular integrity, while in a thrombus it releases aspirin. The in vitro antiplatelet aggregation assay suggests that A-RGDV selectively inhibits arachidonic acid induced platelet aggregation. The mechanisms of action probably include releasing aspirin, modifying cyclic oxidase, and decreasing the expression of GPIIb/IIIa. The in vivo assay demonstrates that the effective antithrombotic dose of A-RGDV is 16700-fold lower than the nonresponsive dose of aspirin.
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Affiliation(s)
- Shaoming Jin
- College of Pharmaceutical Sciences, Capital Medical University , Beijing 100069, People's Republic of China
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19
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Inkjet-printed polyaniline patterns for exocytosed molecule detection from live cells. Talanta 2013; 105:333-9. [DOI: 10.1016/j.talanta.2012.10.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 10/13/2012] [Accepted: 10/15/2012] [Indexed: 12/23/2022]
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20
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Ladnorg T, Welle A, Heißler S, Wöll C, Gliemann H. Site-selective growth of surface-anchored metal-organic frameworks on self-assembled monolayer patterns prepared by AFM nanografting. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2013; 4:638-48. [PMID: 24205458 PMCID: PMC3817682 DOI: 10.3762/bjnano.4.71] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Accepted: 09/17/2013] [Indexed: 05/15/2023]
Abstract
Surface anchored metal-organic frameworks, SURMOFs, are highly porous materials, which can be grown on modified substrates as highly oriented, crystalline coatings by a quasi-epitaxial layer-by-layer method (liquid-phase epitaxy, or LPE). The chemical termination of the supporting substrate is crucial, because the most convenient method for substrate modification is the formation of a suitable self-assembled monolayer. The choice of a particular SAM also allows for control over the orientation of the SURMOF. Here, we demonstrate for the first time the site-selective growth of the SURMOF HKUST-1 on thiol-based self-assembled monolayers patterned by the nanografting technique, with an atomic force microscope as a structuring tool. Two different approaches were applied: The first one is based on 3-mercaptopropionic acid molecules which are grafted in a 1-decanethiolate SAM, which serves as a matrix for this nanolithography. The second approach uses 16-mercaptohexadecanoic acid, which is grafted in a matrix of an 1-octadecanethiolate SAM. In both cases a site-selective growth of the SURMOF is observed. In the latter case the roughness of the HKUST-1 is found to be significantly higher than for the 1-mercaptopropionic acid. The successful grafting process was verified by time-of-flight secondary ion mass spectrometry and atomic force microscopy. The SURMOF structures grown via LPE were investigated and characterized by atomic force microscopy and Fourier-transform infrared microscopy.
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Affiliation(s)
- Tatjana Ladnorg
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Alexander Welle
- Institute for Biological Interfaces 1 (IBG1), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Stefan Heißler
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Christof Wöll
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Hartmut Gliemann
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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21
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Effects of aspect ratios of stem cells on lineage commitments with and without induction media. Biomaterials 2012; 34:930-9. [PMID: 23140997 DOI: 10.1016/j.biomaterials.2012.10.052] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Accepted: 10/22/2012] [Indexed: 11/24/2022]
Abstract
The present study is aimed to examine the shape effect on lineage commitment of stem cells in growth medium free of external chemical induction factors. Aspect ratios (ARs) of cells were controlled by micropatterns with cell-adhesive microislands of AR 1, 2 and 8 on the potent nonfouling background of poly(ethylene glycol) hydrogels, and the single stem cells were well shaped for 19 days. Mesenchymal stem cells (MSCs) derived from rat bone marrow were cultured in osteogenic medium, adipogenic medium, mixed coinduction medium, and also growth medium; alkaline phosphatase (ALP) and oil droplets were employed as indicators of osteoblasts and adipocytes, respectively. Those indicators were well observed in all of three induction media as early as day 7, and also in growth medium at a longer culture time till day 13. While a significant monotonic decrease of adipogenesis was observed with the increase of AR, a non-monotonic change of osteogenesis was found with optimal AR about 2. The relative gene expressions further verified the above findings. As a result, cell shape itself is an inherent cue to regulate stem cell differentiation, let alone with or without external chemical induction factors. Such a shape effect disappeared upon addition of a microfilament inhibitor cytochalasin D or a Rho-associated protein kinase (ROCK) inhibitor Y-27632. So, formation of cytoskeleton is necessary for the shape effect, and the ROCK-pathway-related cell tension is responsible for the shape effect on the lineage commitment of stem cells even in growth medium.
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22
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Wohlrab S, Müller S, Schmidt A, Neubauer S, Kessler H, Leal-Egaña A, Scheibel T. Cell adhesion and proliferation on RGD-modified recombinant spider silk proteins. Biomaterials 2012; 33:6650-9. [DOI: 10.1016/j.biomaterials.2012.05.069] [Citation(s) in RCA: 142] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Accepted: 05/30/2012] [Indexed: 10/28/2022]
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23
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Peng R, Yao X, Cao B, Tang J, Ding J. The effect of culture conditions on the adipogenic and osteogenic inductions of mesenchymal stem cells on micropatterned surfaces. Biomaterials 2012; 33:6008-19. [DOI: 10.1016/j.biomaterials.2012.05.010] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Accepted: 05/05/2012] [Indexed: 11/29/2022]
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24
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Guo XD, Wiradharma N, Liu SQ, Zhang LJ, Khan M, Qian Y, Yang YY. Oligomerized alpha-helical KALA peptides with pendant arms bearing cell-adhesion, DNA-binding and endosome-buffering domains as efficient gene transfection vectors. Biomaterials 2012; 33:6284-91. [DOI: 10.1016/j.biomaterials.2012.05.033] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Accepted: 05/15/2012] [Indexed: 12/19/2022]
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25
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Zhou F, Li D, Wu Z, Song B, Yuan L, Chen H. Enhancing Specific Binding of L929 Fibroblasts: Effects of Multi-Scale Topography of GRGDY Peptide Modified Surfaces. Macromol Biosci 2012; 12:1391-400. [DOI: 10.1002/mabi.201200129] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2012] [Revised: 06/17/2012] [Indexed: 11/09/2022]
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26
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Peng R, Yao X, Ding J. Effect of cell anisotropy on differentiation of stem cells on micropatterned surfaces through the controlled single cell adhesion. Biomaterials 2011; 32:8048-57. [DOI: 10.1016/j.biomaterials.2011.07.035] [Citation(s) in RCA: 219] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Accepted: 07/11/2011] [Indexed: 10/17/2022]
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27
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Aggregation-enhanced fluorescence in PEGylated phospholipid nanomicelles for in vivo imaging. Biomaterials 2011; 32:5880-8. [DOI: 10.1016/j.biomaterials.2011.04.080] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2011] [Accepted: 04/26/2011] [Indexed: 11/21/2022]
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28
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Functional fibrils derived from the peptide TTR1-cycloRGDfK that target cell adhesion and spreading. Biomaterials 2011; 32:6099-110. [DOI: 10.1016/j.biomaterials.2011.05.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Accepted: 05/05/2011] [Indexed: 11/19/2022]
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29
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Huang WC, Yao CK, Liao JD, Lin CCK, Ju MS. Enhanced schwann cell adhesion and elongation on a topographically and chemically modified poly(L-lactic acid) film surface. J Biomed Mater Res A 2011; 99:158-65. [DOI: 10.1002/jbm.a.33090] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2010] [Revised: 01/15/2011] [Accepted: 02/03/2011] [Indexed: 01/24/2023]
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30
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Ng JF, Weil T, Jaenicke S. Cationized bovine serum albumin with pendant RGD groups forms efficient biocoatings for cell adhesion. J Biomed Mater Res B Appl Biomater 2011; 99:282-90. [DOI: 10.1002/jbm.b.31897] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Revised: 05/06/2011] [Accepted: 05/16/2011] [Indexed: 01/09/2023]
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31
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Yan C, Sun J, Ding J. Critical areas of cell adhesion on micropatterned surfaces. Biomaterials 2011; 32:3931-8. [PMID: 21356556 DOI: 10.1016/j.biomaterials.2011.01.078] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Accepted: 01/19/2011] [Indexed: 12/20/2022]
Abstract
The adhesive area is important to modulate cell behaviors on a substrate. This paper aims to semi-quantitatively examine the existence of the characteristic areas of cell adhesion on the level of individual cells. We prepared a series of micropatterned surfaces with adhesive microislands of various sizes on an adhesion-resistant background, and cultured cells of MC3T3-E1 (osteoblast), BMSC (bone mesenchymal stem cell) or NIH3T3 (fibroblast) on those modeled surfaces. We have defined seven characteristic areas of an adhesive microisland and confirmed that they are meaningful to describe cell adhesion behaviors. Those parameters are (1) the critical adhesion area from apoptosis to survival denoted as A∗ or A(c₁), (2) the critical area from adhesion of a single cell to adhesion of multiple cells (A(c₂)), (3) the basic area for one more cell to adhere (A(Δ)), (4) and (5) the characteristic areas of a microisland most probably occupied by one cell (A(peak₁) and two cells (A(peak₂)), (6) and (7) the characteristic areas of a microisland occupied by one cell (A(N₁)) or two cells (A(N₂)) on average. Besides the introduction of those basic parameters, the present paper demonstrates how to determine them experimentally. We further discussed the relationship between those characteristic areas and the spreading area on a non-patterned adhesive surface.
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Affiliation(s)
- Ce Yan
- Key Laboratory of Molecular Engineering of Polymers of Ministry of Education, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
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32
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Kafi MA, Kim TH, Yea CH, Kim H, Choi JW. Effects of nanopatterned RGD peptide layer on electrochemical detection of neural cell chip. Biosens Bioelectron 2010; 26:1359-65. [DOI: 10.1016/j.bios.2010.07.049] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Revised: 07/12/2010] [Accepted: 07/13/2010] [Indexed: 11/28/2022]
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33
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Didar TF, Tabrizian M. Adhesion based detection, sorting and enrichment of cells in microfluidic Lab-on-Chip devices. LAB ON A CHIP 2010; 10:3043-53. [PMID: 20877893 DOI: 10.1039/c0lc00130a] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The detection, isolation and sorting of cells are important tools in both clinical diagnostics and fundamental research. Advances in microfluidic cell sorting devices have enabled scientists to attain improved separation with comparative ease and considerable time savings. Despite the great potential of Lab-on-Chip cell sorting devices for targeting cells with desired specificity and selectivity, this field of research remains unexploited. The challenge resides in the detection techniques which has to be specific, fast, cost-effective, and implementable within the fabrication limitations of microchips. Adhesion-based microfluidic devices seem to be a reliable solution compared to the sophisticated detection techniques used in other microfluidic cell sorting systems. It provides the specificity in detection, label-free separation without requirement for a preprocessing step, and the possibility of targeting rare cell types. This review elaborates on recent advances in adhesion-based microfluidic devices for sorting, detection and enrichment of different cell lines, with a particular focus on selective adhesion of desired cells on surfaces modified with ligands specific to target cells. The effect of shear stress on cell adhesion in flow conditions is also discussed. Recently published applications of specific adhesive ligands and surface functionalization methods have been presented to further elucidate the advances in cell adhesive microfluidic devices.
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Affiliation(s)
- Tohid Fatanat Didar
- Biomedical Engineering Department, McGill University, Montreal, QC H3A 2B4, Canada
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34
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Alves NM, Pashkuleva I, Reis RL, Mano JF. Controlling cell behavior through the design of polymer surfaces. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2010; 6:2208-20. [PMID: 20848593 DOI: 10.1002/smll.201000233] [Citation(s) in RCA: 211] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Polymers have gained a remarkable place in the biomedical field as materials for the fabrication of various devices and for tissue engineering applications. The initial acceptance or rejection of an implantable device is dictated by the crosstalk of the material surface with the bioentities present in the physiological environment. Advances in microfabrication and nanotechnology offer new tools to investigate the complex signaling cascade induced by the components of the extracellular matrix and consequently allow cellular responses to be tailored through the mimicking of some elements of the signaling paths. Patterning methods and selective chemical modification schemes at different length scales can provide biocompatible surfaces that control cellular interactions on the micrometer and sub-micrometer scales on which cells are organized. In this review, the potential of chemically and topographically structured micro- and nanopolymer surfaces are discussed in hopes of a better understanding of cell-biomaterial interactions, including the recent use of biomimetic approaches or stimuli-responsive macromolecules. Additionally, the focus will be on how the knowledge obtained using these surfaces can be incorporated to design biocompatible materials for various biomedical applications, such as tissue engineering, implants, cell-based biosensors, diagnostic systems, and basic cell biology. The review focusses on the research carried out during the last decade.
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Affiliation(s)
- Natália M Alves
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue, Engineering and Regenerative Medicine, AvePark, 4806-909 Taipas, Guimarães, Portugal
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35
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Gou HL, Xu JJ, Xia XH, Chen HY. Air plasma assisting microcontact deprinting and printing for gold thin film and PDMS patterns. ACS APPLIED MATERIALS & INTERFACES 2010; 2:1324-1330. [PMID: 20402458 DOI: 10.1021/am100196z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
In this paper, we present a simple method to fabricate gold film patterns and PDMS patterns by air plasma assisting microcontact deprinting and printing transfer approaches. Chemical gold plating is employed instead of conventional metal evaporation or sputtering to obtain perfect gold film both on flat and topographic PDMS chips, and complicated SAM precoating is replaced by simple air plasma treatment to activate both the surface of gold film and PDMS. In this way, large area patterns of conductive gold film and PDMS patterns could be easily obtained on the elastomeric PDMS substrate. Both the chemical plating gold film and transferred gold film were of good electrochemical properties and similar hydrophilicity with smooth and conductive surface, which made it potentially useful in microfluidic devices and electronics. The gold transfer mechanism is discussed in detail. For typical applications, a cell patterning chip based on the gold pattern was developed to imply the interfacial property, and dielectrophoresis control of live cells was carried out with the patterned gold as interdigital electrodes to show the conductivity.
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Affiliation(s)
- Hong-Lei Gou
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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36
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Bai HJ, Gou HL, Xu JJ, Chen HY. Molding a silver nanoparticle template on polydimethylsiloxane to efficiently capture mammalian cells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:2924-2929. [PMID: 20141218 DOI: 10.1021/la902683x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Herein, a functional template made up of in situ synthesized silver nanoparticles (AgNPs) is prepared on polydimethylsiloxane (PDMS) for the spatial control of cell capture, where the residual Si-H groups in the PDMS matrix are used as reductants to reduce AgNO(3) for forming AgNPs. In virtue of microfluidic system, a one-dimensional array pattern of AgNPs is obtained easily. Further combining with plasma treatment, a two-dimensional array pattern of AgNPs could be achieved. The obtained PDMS-AgNPs composite is characterized in detail. The PDMS-AgNPs composite shows good antibacterial property in E. coli adhesion tests. The patterns possess hifi and high resolution (ca. 8 microm). Cell patterns with high efficiency and spatial selectivity are further formed with the aid of H-Arg-Gly-Asp-Cys-OH (RGDC) tetrapeptide which is grafted on the AgNPs template. Cells immobilized on the template show a good ability for adhesion, spreading, migration, and growth.
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Affiliation(s)
- Hai-Jing Bai
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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Petershans A, Lyapin A, Reichlmaier S, Kalinina S, Wedlich D, Gliemann H. TOF-SIMS analysis of structured surfaces biofunctionalized by a one-step coupling of a spacer-linked GRGDS peptide. J Colloid Interface Sci 2010; 341:30-7. [DOI: 10.1016/j.jcis.2009.09.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2009] [Revised: 09/09/2009] [Accepted: 09/10/2009] [Indexed: 10/20/2022]
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Sureshbabu VV, Naik SA, Hemantha HP, Narendra N, Das U, Guru Row TN. N-Urethane-Protected Amino Alkyl Isothiocyanates: Synthesis, Isolation, Characterization, and Application to the Synthesis of Thioureidopeptides. J Org Chem 2009; 74:5260-6. [DOI: 10.1021/jo900675s] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vommina V. Sureshbabu
- Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus, Bangalore University, Dr. B. R. Ambedkar Veedhi, Bangalore 560 001, India
| | - Shankar A. Naik
- Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus, Bangalore University, Dr. B. R. Ambedkar Veedhi, Bangalore 560 001, India
| | - H. P. Hemantha
- Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus, Bangalore University, Dr. B. R. Ambedkar Veedhi, Bangalore 560 001, India
| | - N. Narendra
- Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus, Bangalore University, Dr. B. R. Ambedkar Veedhi, Bangalore 560 001, India
| | - Ushati Das
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India
| | - Tayur N. Guru Row
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India
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Huang J, Gräter SV, Corbellini F, Rinck-Jahnke S, Bock E, Kemkemer R, Kessler H, Ding J, Spatz JP. Impact of order and disorder in RGD nanopatterns on cell adhesion. NANO LETTERS 2009; 9:1111-6. [PMID: 19206508 PMCID: PMC2669488 DOI: 10.1021/nl803548b] [Citation(s) in RCA: 281] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
We herein present a novel platform of well-controlled ordered and disordered nanopatterns positioned with a cyclic peptide of arginine-glycine-aspartic acid (RGD) on a bioinert poly(ethylene glycol) background, to study whether the nanoscopic order of spatial patterning of the integrin-specific ligands influences osteoblast adhesion. This is the first time that the nanoscale order of RGD ligand patterns was varied quantitatively, and tested for its impact on the adhesion of tissue cells. Our findings reveal that integrin clustering and such adhesion induced by RGD ligands is dependent on the local order of ligand arrangement on a substrate when the global average ligand spacing is larger than 70 nm; i.e., cell adhesion is "turned off" by RGD nanopattern order and "turned on" by the RGD nanopattern disorder if operating at this range of interligand spacing.
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Affiliation(s)
- Jinghuan Huang
- Key Laboratory of Molecular Engineering of Polymers of Ministry of Education, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
- Department of New Materials and Biosystems, Max Planck Institute for Metals Research, and Department of Biophysical Chemistry, University of Heidelberg, Heisenbergstrasse 3, D-70569 Stuttgart, Germany
| | - Stefan V. Gräter
- Department of New Materials and Biosystems, Max Planck Institute for Metals Research, and Department of Biophysical Chemistry, University of Heidelberg, Heisenbergstrasse 3, D-70569 Stuttgart, Germany
| | - Francesca Corbellini
- Department of New Materials and Biosystems, Max Planck Institute for Metals Research, and Department of Biophysical Chemistry, University of Heidelberg, Heisenbergstrasse 3, D-70569 Stuttgart, Germany
| | - Sabine Rinck-Jahnke
- Department of New Materials and Biosystems, Max Planck Institute for Metals Research, and Department of Biophysical Chemistry, University of Heidelberg, Heisenbergstrasse 3, D-70569 Stuttgart, Germany
| | - Eva Bock
- Department of New Materials and Biosystems, Max Planck Institute for Metals Research, and Department of Biophysical Chemistry, University of Heidelberg, Heisenbergstrasse 3, D-70569 Stuttgart, Germany
| | - Ralf Kemkemer
- Department of New Materials and Biosystems, Max Planck Institute for Metals Research, and Department of Biophysical Chemistry, University of Heidelberg, Heisenbergstrasse 3, D-70569 Stuttgart, Germany
| | - Horst Kessler
- Center of Integrated Protein Science Munich at the Technical University of Munich, Department Chemie, Technical University of Munich, Lichtenbergstrasse 4, D-85747 Garching, Germany
| | - Jiandong Ding
- Key Laboratory of Molecular Engineering of Polymers of Ministry of Education, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University, Shanghai 200433, China
- Corresponding authors: E-mail: (J.P. Spatz); (J. Ding)
| | - Joachim P. Spatz
- Department of New Materials and Biosystems, Max Planck Institute for Metals Research, and Department of Biophysical Chemistry, University of Heidelberg, Heisenbergstrasse 3, D-70569 Stuttgart, Germany
- Corresponding authors: E-mail: (J.P. Spatz); (J. Ding)
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Battistini L, Burreddu P, Carta P, Rassu G, Auzzas L, Curti C, Zanardi F, Manzoni L, Araldi EMV, Scolastico C, Casiraghi G. 4-Aminoproline-based arginine-glycine-aspartate integrin binders with exposed ligation points: practical in-solution synthesis, conjugation and binding affinity evaluation. Org Biomol Chem 2009; 7:4924-35. [DOI: 10.1039/b914836a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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