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Parveen S, Basu M, Chowdhury P, Dhara T, DasGupta S, Das S, Dasgupta S. Surface modification of polydimethylsiloxane by the cataractous eye protein isolate. Int J Biol Macromol 2024; 260:129470. [PMID: 38237817 DOI: 10.1016/j.ijbiomac.2024.129470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 01/05/2024] [Accepted: 01/11/2024] [Indexed: 01/27/2024]
Abstract
Polydimethylsiloxane (PDMS), even though widely used in microfluidic applications, its hydrophobic nature restricts its utility in some cases. To address this, PDMS may be used in conjunction with a hydrophilic material. Herein, the PDMS surface is modified by plasma treatment followed by cross-linking with the cataractous eye protein isolate (CEPI). CEPI-PDMS composites are prepared at three pH and the effects of CEPI on the chemical, physical, and electrical properties of PDMS are extensively investigated. The cross-linking between PDMS and the protein are confirmed by FTIR, and the contact angle measurements indicate the improved hydrophilic nature of the composite films as compared to PDMS. Atomic Force Microscopy results demonstrate that the surface roughness is enhanced by the incorporation of the protein and is a function of the pH. The effective elastic modulus of the composites is improved by the incorporation of protein into the PDMS matrix. Measurements of the dielectric properties of these composites indicate that they behave as capacitors at lower frequency range while demonstrating resistive characteristics at higher frequency. These composites provide preliminary ideas in developing flexible devices for potential applications in diverse areas such as energy storage materials, and thermo-elective wireless switching devices.
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Affiliation(s)
- Sultana Parveen
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Mainak Basu
- Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Prasun Chowdhury
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Trina Dhara
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Sunando DasGupta
- Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India; Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
| | - Soumen Das
- Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India; School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, India
| | - Swagata Dasgupta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India.
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Siddique A, Pause I, Narayan S, Kruse L, Stark RW. Endothelialization of PDMS-based microfluidic devices under high shear stress conditions. Colloids Surf B Biointerfaces 2020; 197:111394. [PMID: 33075662 DOI: 10.1016/j.colsurfb.2020.111394] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 09/02/2020] [Accepted: 09/28/2020] [Indexed: 10/23/2022]
Abstract
Microfluidic systems made out of polydimethylsiloxane (PDMS) offer a platform to mimic vascular flow conditions in model systems at well-defined shear stresses. However, extracellular matrix (ECM) proteins that are physisorbed on the PDMS are not reliably attached under high shear stress conditions, which makes long-term experiments difficult. To overcome this limitation, we functionalized PDMS surfaces with 3-aminopropyltriethoxysilane (APTES) by using different surface activation methods to develop a stable linkage between the PDMS surface and collagen, which served as a model ECM protein. The stability of the protein coating inside the microfluidic devices was evaluated in perfusion experiments with phosphate-buffered saline (PBS) at 10-40 dynes/cm2 wall shear stress. To assess the stability of cell adhesion, endothelial cells were grown in a multi-shear device over a shear stress range of 20-150 dynes/cm2. Cells on the APTES-mediated collagen coating were stable over the entire shear stress range in PBS (pH 9) for 48 h. The results suggest that at high pH values, the electrostatic interaction between APTES-coated surfaces and collagen molecules offer a very promising tool to modify PDMS-based microfluidic devices for long-term endothelialization under high shear stress conditions.
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Affiliation(s)
- Asma Siddique
- Physics of Surfaces, Institute of Materials Science, Technische Universität Darmstadt, Alarich-Weiss-Str. 16, 64287, Darmstadt, Germany
| | - Isabelle Pause
- Physics of Surfaces, Institute of Materials Science, Technische Universität Darmstadt, Alarich-Weiss-Str. 16, 64287, Darmstadt, Germany
| | - Suman Narayan
- Physics of Surfaces, Institute of Materials Science, Technische Universität Darmstadt, Alarich-Weiss-Str. 16, 64287, Darmstadt, Germany
| | - Larissa Kruse
- Macromolecular Chemistry and Paper Chemistry, Department of Chemistry, Technische Universität Darmstadt, Alarich-Weiss-Str. 4, 64287, Darmstadt, Germany
| | - Robert W Stark
- Physics of Surfaces, Institute of Materials Science, Technische Universität Darmstadt, Alarich-Weiss-Str. 16, 64287, Darmstadt, Germany.
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Martin J, Martinez J, Mehdi A, Subra G. Silicone grafted bioactive peptides and their applications. Curr Opin Chem Biol 2019; 52:125-35. [DOI: 10.1016/j.cbpa.2019.06.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/14/2019] [Accepted: 06/17/2019] [Indexed: 11/17/2022]
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Zarate-Triviño DG, Pool H, Vergara-Castañeda H, Elizalde-Peña EA, Vallejo-Becerra V, Villaseñor F, Prokhorov E, Gough J, Garcia-Gaitan B, Luna-Barcenas G. (Chitosan-g-glycidyl methacrylate)-collagen II scaffold for cartilage regeneration. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2019.1655749] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Diana G. Zarate-Triviño
- Cinvestav-Querétaro, Querétaro, Mexico
- Departmento de Biología, Universidad Autónoma de Nuevo León, Nuevo León, Monterrey, México
| | | | - Hayde Vergara-Castañeda
- Departamento de Investigación Biomédica, Facultad de Medicina, Universidad Autónoma de Querétaro, Querétaro, Qro, México
| | - Eduardo A. Elizalde-Peña
- División de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Querétaro, Qro, Mexico
| | - Vanessa Vallejo-Becerra
- División de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Querétaro, Qro, Mexico
| | - Francisco Villaseñor
- Departamento de Ingeniería Bioquímica, Instituto Tecnológico de Celaya, Celaya, Gto, México
| | | | - Julie Gough
- Materials Engineering, School of Materials, The University of Manchester, Manchester, UK
| | - Beatriz Garcia-Gaitan
- Division de Estudios de Posgrado e Investigacion, Instituto Tecnologico de Toluca, Estado de México, Metepec, Mexico
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Tong MH, Huang N, Ngan AHW, Du Y, Chan BP. Preferential sensing and response to microenvironment stiffness of human dermal fibroblast cultured on protein micropatterns fabricated by 3D multiphoton biofabrication. Sci Rep 2017; 7:12402. [PMID: 28963517 DOI: 10.1038/s41598-017-12604-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 08/31/2017] [Indexed: 11/12/2022] Open
Abstract
While cells are known to sense and respond to their niche including the matrix and the mechanical microenvironment, whether they preferentially sense and react to the stiffness of their microenvironment regardless of its intrinsic material properties is unknown. In this work, protein micropillar arrays with independently controllable stiffness via alterations in pillar height and elastic modulus via laser power used during photochemical cross-linking, were fabricated using a recently developed multiphoton-based 3D protein micro-patterning technology. Human dermal fibroblasts were cultured on these micropillar arrays and the specific interactions between cells and the protein micropatterns particularly on the formation and maturation of the cell-matrix adhesions, were investigated via immunofluorescence staining of the major molecular markers of the adhesions and the measurement of their cluster size, respectively. Our results showed that the cluster size of focal adhesions increased as the stiffness of the micropillar arrays increased, but it was insensitive to the elastic modulus of the protein micropillars that is one of the intrinsic material properties. This finding provides evidence to the notion that cells preferentially sense and react to the stiffness, but not the elastic modulus of their microenvironment.
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Siddique A, Meckel T, Stark RW, Narayan S. Improved cell adhesion under shear stress in PDMS microfluidic devices. Colloids Surf B Biointerfaces 2017; 150:456-464. [DOI: 10.1016/j.colsurfb.2016.11.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Revised: 11/06/2016] [Accepted: 11/07/2016] [Indexed: 12/01/2022]
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Blit PH, Battiston KG, Woodhouse KA, Santerre JP. Surface immobilization of elastin-like polypeptides using fluorinated surface modifying additives. J Biomed Mater Res A 2011; 96:648-62. [DOI: 10.1002/jbm.a.33022] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2010] [Revised: 11/08/2010] [Accepted: 12/01/2010] [Indexed: 11/09/2022]
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Abstract
We present many examples of surface engineered polymeric biomaterials with nanosize modified layers, controlled protein adsorption, and cellular interactions potentially applicable for tissue and/or blood contacting devices, scaffolds for cell culture and tissue engineering, biosensors, biological microchips as well as approaches to their preparation.
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Moraes C, Kagoma YK, Beca BM, Tonelli-Zasarsky RLM, Sun Y, Simmons CA. Integrating polyurethane culture substrates into poly(dimethylsiloxane) microdevices. Biomaterials 2009; 30:5241-50. [PMID: 19545891 DOI: 10.1016/j.biomaterials.2009.05.066] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2009] [Accepted: 05/25/2009] [Indexed: 10/20/2022]
Abstract
Poly(dimethylsiloxane) (PDMS)-based microdevices have enabled rapid, high-throughput assessment of cellular response to precisely controlled microenvironmental stimuli, including chemical, matrix and mechanical factors. However, the use of PDMS as a culture substrate precludes long-term culture and may significantly impact cell response. Here we describe a method to integrate polyurethane (PU), a well-studied and clinically relevant biomaterial, into the PDMS multilayer microfabrication process, enabling the exploration of long-term cellular response on alternative substrates in microdevices. To demonstrate the utility of these hybrid microdevices for cell culture, we compared initial cell adhesion, cell spreading, and maintenance of protein patterns on PU and PDMS substrates. Initial cell adhesion and cell spreading after three days were comparable between collagen-coated PDMS and PU substrates (with or without collagen coating), but significantly lower on native PDMS substrates. However, for longer culture durations (> or = 6 days), cell spreading and protein adhesion on PU substrates was significantly better than that on PDMS substrates, and comparable to that on tissue culture-treated polystyrene. Thus, the use of a generic polyurethane substrate in microdevices enables longer-term cell culture than is possible with PDMS substrates. More generally, this technique can improve the impact and applicability of microdevice-based research by facilitating the use of alternate, relevant biomaterials while maintaining the advantages of using PDMS for microdevice fabrication.
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Affiliation(s)
- Christopher Moraes
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario M5S 3G8, Canada
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