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Rashad A, Grøndahl M, Heggset EB, Mustafa K, Syverud K. Responses of Rat Mesenchymal Stromal Cells to Nanocellulose with Different Functional Groups. ACS APPLIED BIO MATERIALS 2023; 6:987-998. [PMID: 36763504 PMCID: PMC10031564 DOI: 10.1021/acsabm.2c00794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Cellulose nanofibrils (CNFs) are multiscale hydrophilic biocompatible polysaccharide materials derived from wood and plants. TEMPO-mediated oxidation of CNFs (TO-CNF) turns some of the primary hydroxyl groups to carboxylate and aldehyde groups. Unlike carboxylic functional groups, there is little or no information about the biological role of the aldehyde groups on the surface of wood-based CNFs. In this work, we replaced the aldehyde groups in the TO-CNF samples with carboxyl groups by another oxidation treatment (TO-O-CNF) or with primary alcohols with terminal hydroxyl groups by a reduction reaction (TO-R-CNF). Rat mesenchymal stem/stromal cells (MSCs) derived from bone marrow were seeded on polystyrene tissue culture plates (TCP) coated with CNFs with and without aldehyde groups. TCP and TCP coated with bacterial nanocellulose (BNC) were used as control groups. Protein adsorption measurements demonstrated that more proteins were adsorbed from cell culture media on all CNF surfaces compared to BNC. Live/dead and lactate dehydrogenase assays confirmed that all nanocellulose biomaterials supported excellent cell viability. Interestingly, TO-R-CNF samples, which have no aldehyde groups, showed better cell spreading than BNC and comparable results to TCP. Unlike TO-O-CNF surfaces, which have no aldehyde groups either, TO-R-CNF stimulated cells, in osteogenic medium, to have higher alkaline phosphatase activity and to form more biomineralization than TCP and TO-CNF groups. These findings indicate that the presence of aldehyde groups (280 ± 14 μmol/g) on the surface of TEMPO-oxidized CNFs might have little or no effect on attachment, proliferation, and osteogenic differentiation of MSCs.
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Affiliation(s)
- Ahmad Rashad
- Center of Translational Oral Research (TOR), Department of Clinical Dentistry, University of Bergen, Bergen 5009, Norway
| | - Martha Grøndahl
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology, Trondheim 7491, Norway
| | | | - Kamal Mustafa
- Center of Translational Oral Research (TOR), Department of Clinical Dentistry, University of Bergen, Bergen 5009, Norway
| | - Kristin Syverud
- RISE PFI, Trondheim 7491, Norway
- Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway
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He J, Steffen JH, Thulstrup PW, Pedersen JN, Sauerland MB, Otzen DE, Hawkins CL, Gourdon P, Davies MJ, Hägglund P. Anastellin impacts on the processing of extracellular matrix fibronectin and stimulates release of cytokines from coronary artery smooth muscle cells. Sci Rep 2022; 12:22051. [PMID: 36543832 PMCID: PMC9772232 DOI: 10.1038/s41598-022-26359-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022] Open
Abstract
Anastellin, a recombinant protein fragment from the first type III module of fibronectin, mimics a partially unfolded intermediate implicated in the assembly of fibronectin fibrils. Anastellin influences the structure of fibronectin and initiates in vitro fibrillation, yielding "superfibronectin", a polymer with enhanced cell-adhesive properties. This ability is absent in an anastellin double mutant, L37AY40A. Here we demonstrate that both wild-type and L37AY40A anastellin affect fibronectin processing within the extracellular matrix (ECM) of smooth muscle cells. Fibronectin fibrils are diminished in the ECM from cells treated with anastellin, but are partially rescued by supplementation with plasma fibronectin in cell media. Proteomic analyses reveal that anastellin also impacts on the processing of other ECM proteins, with increased collagen and decreased laminin detected in media from cells exposed to wild-type anastellin. Moreover, both anastellin forms stimulate release of inflammatory cytokines, including interleukin 6. At the molecular level, L37AY40A does not exhibit major perturbations of structural features relative to wild-type anastellin, though the mutant showed differences in heparin binding characteristics. These findings indicate that wild-type and L37AY40A anastellin share similar molecular features but elicit slightly different, but partially overlapping, responses in smooth muscle cells resulting in altered secretion of cytokines and proteins involved in ECM processing.
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Affiliation(s)
- Jianfei He
- grid.5254.60000 0001 0674 042XDepartment of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jonas Hyld Steffen
- grid.5254.60000 0001 0674 042XDepartment of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Peter Waaben Thulstrup
- grid.5254.60000 0001 0674 042XDepartment of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | - Jannik Nedergaard Pedersen
- grid.7048.b0000 0001 1956 2722Interdisciplinary Nanoscience Center (iNANO), Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark ,grid.432104.0Present Address: Arla Foods Ingredients Group P/S, Sønderupvej 26, 6920 Videbæk, Denmark
| | - Max B. Sauerland
- grid.5254.60000 0001 0674 042XDepartment of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Daniel E. Otzen
- grid.7048.b0000 0001 1956 2722Interdisciplinary Nanoscience Center (iNANO), Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Clare L. Hawkins
- grid.5254.60000 0001 0674 042XDepartment of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Pontus Gourdon
- grid.5254.60000 0001 0674 042XDepartment of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Michael J. Davies
- grid.5254.60000 0001 0674 042XDepartment of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Per Hägglund
- grid.5254.60000 0001 0674 042XDepartment of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
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Huang Z, Wang G, Yang B, Li P, Yang T, Wu Y, Yang X, Liu J, Li J. Mechanism of ketotifen fumarate inhibiting renal calcium oxalate stone formation in SD rats. Biomed Pharmacother 2022; 151:113147. [PMID: 35643070 DOI: 10.1016/j.biopha.2022.113147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/02/2022] [Accepted: 05/15/2022] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVES To investigate the inhibitory effect of ketotifen fumarate (KFA), a mast cell membrane stabilizer, on renal calcium oxalate stone (CaOx) formation and its possible molecular mechanism. METHODS We used the Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) database for functional and pathway enrichment analyses of osteopontin (OPN), CD44 and fibronectin (FN). Blood biochemistry, reactive oxygen species ratio (ROS), mast cells, proteins (CD44, OPN and FN) and OPN receptor integrin family genes were detected by ELISA, flow cytometry, immunohistochemistry and RT-QPCR, respectively. RESULTS The crystal area of CaOx in the KFA and Control group was significantly smaller than that in the Model group. The number of activated mast cells, the expression levels of OPN and CD44 in the Control and KFA groups were significantly lower than those in the Model group, and the percentage of ROS in the KFA group was also significantly lower than that in the Model group. The mRNA expression levels of ITGB1, ITGA9, ITGAV and ITGA4 genes in the prominent OPN receptor integrin family increased significantly in the Model group. CONCLUSIONS Ketotifen can effectively inhibit the crystal formation of CaOx and reduce the inflammatory response of tissue in SD rats. The mechanism may be to reduce the infiltration and activation of mast cells in renal tissue and down-regulate the expression of OPN, CD44 and FN in renal tubules and renal interstitium. And affect the synthesis of integrins (ITGA9, ITGA4, ITGAV, ITGB1, ITGB3 and ITGB5) and ROS.
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Affiliation(s)
- Ziye Huang
- The Department of Urology, The Second Affiliated Hospital of Kunming Medical University, No. 374 Dian-Mian Avenue, Kunming, Yunnan 650101, PR China
| | - Guang Wang
- The Department of Urology, The Second Affiliated Hospital of Kunming Medical University, No. 374 Dian-Mian Avenue, Kunming, Yunnan 650101, PR China
| | - Bowei Yang
- The Department of Urology, The Second Affiliated Hospital of Kunming Medical University, No. 374 Dian-Mian Avenue, Kunming, Yunnan 650101, PR China
| | - Pei Li
- The Department of Urology, The Second Affiliated Hospital of Kunming Medical University, No. 374 Dian-Mian Avenue, Kunming, Yunnan 650101, PR China
| | - Tongxin Yang
- The Department of Urology, The Second Affiliated Hospital of Kunming Medical University, No. 374 Dian-Mian Avenue, Kunming, Yunnan 650101, PR China
| | - Yuyun Wu
- The Department of Urology, The Second Affiliated Hospital of Kunming Medical University, No. 374 Dian-Mian Avenue, Kunming, Yunnan 650101, PR China
| | - Xing Yang
- The Department of Urology, The Second Affiliated Hospital of Kunming Medical University, No. 374 Dian-Mian Avenue, Kunming, Yunnan 650101, PR China
| | - Jianhe Liu
- The Department of Urology, The Second Affiliated Hospital of Kunming Medical University, No. 374 Dian-Mian Avenue, Kunming, Yunnan 650101, PR China.
| | - Jiongming Li
- The Department of Urology, The Second Affiliated Hospital of Kunming Medical University, No. 374 Dian-Mian Avenue, Kunming, Yunnan 650101, PR China.
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Warning LA, Zhang Q, Baiyasi R, Landes CF, Link S. Nanoscale Surface-Induced Unfolding of Single Fibronectin Is Restricted by Serum Albumin Crowding. J Phys Chem Lett 2020; 11:1170-1177. [PMID: 31967479 DOI: 10.1021/acs.jpclett.9b03446] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Understanding nanoscale protein conformational changes at solid-liquid interfaces is critical for predicting how proteins will impact the performance of biomaterials in vivo. Crowding is an important contributor to conformational stability. Here we apply single-molecule high resolution imaging with photobleaching to directly measure dye-conjugated fibronectin's unfolding in varying conditions of crowding with human serum albumin on aminosilanized glass. Using this approach, we identify serum albumin's crowding mechanism. We find that fibronectin achieves larger degrees of unfolding when not crowded by coadsorbed serum albumin. Serum albumin does not as effectively constrict fibronectin's conformation if it is sequentially, rather than simultaneously, introduced, suggesting that serum albumin's crowding mechanism is dependent on its ability to sterically block fibronectin's unfolding during the process of adsorption. Because fibronectin's conformation is dependent on interfacial macromolecular crowding under in vitro conditions, it is important to consider the role of in vivo crowding on protein activity.
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Protein adsorption dynamics to polymer surfaces revisited-A multisystems approach. Biointerphases 2019; 14:051005. [PMID: 31578069 DOI: 10.1116/1.5121249] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Performance and safety of materials in contact with living matter are determined by sequential and competitive protein adsorption. However, cause and consequences of these processes remain hard to be generalized and predicted. In a new attempt to address that challenge, the authors compared and analyzed the protein adsorption and displacement on various thoroughly characterized polymer substrates using a combination of surface-sensitive techniques. A multiple linear regression approach was applied to model the dependence of protein adsorption, desorption, and exchange dynamics on protein and surface characteristics. While the analysis confirmed that protein properties primarily govern the observed adsorption and retention phenomena and hydrophobicity as well as surface charge are the most relevant polymer surface properties, the authors have identified several protein-surface combinations that deviate from these patterns and deserve further investigation.
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Tuccitto N, Messina GML, Li-Destri G, Wietecka A, Marletta G. Chelating Surfaces for Oriented Human Serum Albumin Molecules. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:3354-3362. [PMID: 30741553 DOI: 10.1021/acs.langmuir.9b00068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Protein immobilization in a specific conformation or orientation at an interface is influenced by specific interactions with the outer layer of the surface. A strategy to build-up a complex construct which is able to orient protein molecules, based on metal-cation chelation processes, is reported. The proposed methodology implies the formation of a mercaptoundecanoic acid monolayer on a gold surface that is activated to attach covalently the tripeptide glycyl-l-histidyl-l-lysine (GHK) on the surface, whose sites are then employed to chelate copper ions, providing a selective platform for the orientation of human serum albumin (HSA) molecules. The protein adsorption process on GHK and GHK-Cu(II)-complex surfaces was monitored by the in situ quartz crystal microbalance with dissipation monitoring (QCM-D) and force spectroscopy technique. The changes in frequency and dissipation factor as well as the D- f plots from QCM-D measurements help to characterize the changes in the protein conformation and are confirmed by force curve spectroscopy results. An improved kinetic model, based on random sequential adsorption with variable protein footprints, has been developed to predict and simulate the experimentally found HSA average surface coverage onto the GHK and GHK-Cu(II)-complex surfaces.
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Affiliation(s)
- N Tuccitto
- Laboratory for Molecular Surfaces and Nanotechnology (LAMSUN), Department of Chemical Sciences , University of Catania and CSGI , Viale Andrea Doria 6 , 95125 Catania , Italy
| | - G M L Messina
- Laboratory for Molecular Surfaces and Nanotechnology (LAMSUN), Department of Chemical Sciences , University of Catania and CSGI , Viale Andrea Doria 6 , 95125 Catania , Italy
| | - G Li-Destri
- Laboratory for Molecular Surfaces and Nanotechnology (LAMSUN), Department of Chemical Sciences , University of Catania and CSGI , Viale Andrea Doria 6 , 95125 Catania , Italy
| | - A Wietecka
- Laboratory for Molecular Surfaces and Nanotechnology (LAMSUN), Department of Chemical Sciences , University of Catania and CSGI , Viale Andrea Doria 6 , 95125 Catania , Italy
- Faculty of Chemistry , Adam Mickiewicz University in Poznan , Umultowska 89b , PL-61-614 Poznan , Poland
| | - G Marletta
- Laboratory for Molecular Surfaces and Nanotechnology (LAMSUN), Department of Chemical Sciences , University of Catania and CSGI , Viale Andrea Doria 6 , 95125 Catania , Italy
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7
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Fernández-Montes Moraleda B, San Román J, Rodríguez-Lorenzo LM. Adsorption and conformational modification of fibronectin and fibrinogen adsorbed on hydroxyapatite. A QCM-D study. J Biomed Mater Res A 2016; 104:2585-94. [PMID: 27254464 DOI: 10.1002/jbm.a.35802] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 03/11/2016] [Accepted: 03/16/2016] [Indexed: 01/06/2023]
Abstract
Hydroxyapatite is a bioactive ceramic frequently used for bone engineering/replacement. One of the parameters that influence the biological response to implanted materials is the conformation of the first adsorbed protein layer. In this work, the adsorption and conformational changes of two fibroid serum proteins; fibronectin and fibrinogen adsorbed onto four different hydroxyapatite powders are studied with a Quartz Crystal Microbalance with Dissipation (QCM-D). Each of the calcined apatites adsorbs less protein than their corresponding synthesized samples. Adsorption on synthesized samples yields always an extended conformation whereas a reorganization of the layer is observed for the calcined samples. Fg acquires a "Side on" conformation in all the samples at the beginning of the experiment except for one of the synthesized samples where an "End-on" conformation is obtained during the whole experiment. The Extended conformation is the active conformation for Fn. This conformation is favored by apatites with large specific surface area (SSA) and on highly concentrated media. Apatite surface features should be considered in the selection or design of materials for bone regeneration, since it is possible to control the conformation mode of attachment of Fn and Fg by an appropriate selection of them. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 2585-2594, 2016.
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Affiliation(s)
- Belén Fernández-Montes Moraleda
- Biomaterials Group, ICTP-CSIC, Juan De La Cierva, 3, Madrid, 28006, Spain.,Networking Biomedical Research Centre in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Zaragoza, Spain
| | - Julio San Román
- Biomaterials Group, ICTP-CSIC, Juan De La Cierva, 3, Madrid, 28006, Spain.,Networking Biomedical Research Centre in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Zaragoza, Spain
| | - Luís M Rodríguez-Lorenzo
- Biomaterials Group, ICTP-CSIC, Juan De La Cierva, 3, Madrid, 28006, Spain.,Networking Biomedical Research Centre in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Zaragoza, Spain
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8
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Preferential adsorption of cell adhesive proteins from complex media on self-assembled monolayers and its effect on subsequent cell adhesion. Acta Biomater 2015; 26:72-81. [PMID: 26306676 DOI: 10.1016/j.actbio.2015.08.033] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 06/30/2015] [Accepted: 08/21/2015] [Indexed: 11/21/2022]
Abstract
We examined the effect of surface chemistry on adsorption of fibronectin (Fn) and vitronectin (Vn) and subsequent cell adhesion, employing self-assembled monolayers (SAMs) of alkanethiols carrying terminal methyl (CH3), hydroxyl groups (OH), carboxylic acid (COOH), and amine (NH2). More Fn and Vn adsorbed to COOH- and NH2-SAMs than to CH3- and OH-SAMs from a mixture with bovine serum albumin (BSA) and from 2% fetal bovine serum. Adhesion of human umbilical vein endothelial cells (HUVECs) on CH3- and OH-SAMs preadsorbed with Fn and BSA decreased with decreasing adsorbed Fn; however, HUVECs adhered to COOH- and NH2-SAMs even in the presence of BSA at 1000-fold more than Fn in a mixture because of the preferential adsorption of Fn and/or displacement of preadsorbed BSA with Fn and Vn in a serum-containing medium. SAMs coated with a mixture of Vn and BSA exhibited adhesion of HUVECs regardless of surface functional groups. A well-organized focal adhesion complex and actin stress fibers were observed only for COOH- and NH2-SAMs when SAMs were preadsorbed with Vn and BSA. These results suggest that COOH- and NH2-SAMs allow for both cell adhesion and cell spreading because of the high density of cell-binding domains derived from adsorbed Vn. STATEMENT OF SIGNIFICANCE Adsorption of cell adhesive proteins including fibronectin (Fn) and vitronectin (Vn) plays an important role in cell adhesion to artificial materials. However, for the development of biomaterials that contact with biological fluids, it is important to understand adsorption of Fn and Vn in complex media containing many kinds of proteins. Here, we focused on adsorption of Fn and Vn from complex media including mixed solution with albumin and fetal bovine serum, and its role on cell adhesion using self-assembled monolayers (SAMs). Our result demonstrates that SAMs carrying carboxylic acid or amine allow for both cell adhesion and cell spreading because of preferentially adsorbed Vn. The result provides insights into surface design of cell culture substrates and tissue engineering scaffolds.
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9
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Delivopoulos E, Ouberai MM, Coffey PD, Swann MJ, Shakesheff KM, Welland ME. Serum protein layers on parylene-C and silicon oxide: effect on cell adhesion. Colloids Surf B Biointerfaces 2014; 126:169-77. [PMID: 25555155 PMCID: PMC4342411 DOI: 10.1016/j.colsurfb.2014.12.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 12/09/2014] [Accepted: 12/09/2014] [Indexed: 11/17/2022]
Abstract
We studied how cell adhesion is affected by serum protein adsorbed on parylene-C. Serum proteins form distinct layers when adsorbed onto parylene-C or silicon oxide. Biosensing technique elucidates contrasting protein layer densities and thicknesses. Fibronectin supports cell adhesion on both surfaces. Albumin outcompetes fibronectin on parylene-C and vice versa on silicon oxide.
Among the range of materials used in bioengineering, parylene-C has been used in combination with silicon oxide and in presence of the serum proteins, in cell patterning. However, the structural properties of adsorbed serum proteins on these substrates still remain elusive. In this study, we use an optical biosensing technique to decipher the properties of fibronectin (Fn) and serum albumin adsorbed on parylene-C and silicon oxide substrates. Our results show the formation of layers with distinct structural and adhesive properties. Thin, dense layers are formed on parylene-C, whereas thicker, more diffuse layers are formed on silicon oxide. These results suggest that Fn acquires a compact structure on parylene-C and a more extended structure on silicon oxide. Nonetheless, parylene-C and silicon oxide substrates coated with Fn host cell populations that exhibit focal adhesion complexes and good cell attachment. Albumin adopts a deformed structure on parylene-C and a globular structure on silicon oxide, and does not support significant cell attachment on either surface. Interestingly, the co-incubation of Fn and albumin at the ratio found in serum, results in the preferential adsorption of albumin on parylene-C and Fn on silicon oxide. This finding is supported by the exclusive formation of focal adhesion complexes in differentiated mouse embryonic stem cells (CGR8), cultured on Fn/albumin coated silicon oxide, but not on parylene-C. The detailed information provided in this study on the distinct properties of layers of serum proteins on substrates such as parylene-C and silicon oxide is highly significant in developing methods for cell patterning.
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Affiliation(s)
- Evangelos Delivopoulos
- Nanoscience Centre, Department of Engineering, University of Cambridge, Cambridge CB3 0FF, UK; School of Systems Engineering, University of Reading, Reading RG6 6AY, UK
| | - Myriam M Ouberai
- Nanoscience Centre, Department of Engineering, University of Cambridge, Cambridge CB3 0FF, UK.
| | - Paul D Coffey
- School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Marcus J Swann
- Farfield, Biolin Scientific, 62 Wellington Road South, Stockport SK1 3SU, Cheshire, UK
| | - Kevin M Shakesheff
- School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Mark E Welland
- Nanoscience Centre, Department of Engineering, University of Cambridge, Cambridge CB3 0FF, UK
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Vyner MC, Li A, Amsden BG. The effect of poly(trimethylene carbonate) molecular weight on macrophage behavior and enzyme adsorption and conformation. Biomaterials 2014; 35:9041-8. [DOI: 10.1016/j.biomaterials.2014.07.023] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 07/18/2014] [Indexed: 10/24/2022]
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11
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Sun M, Deng J, Tang Z, Wu J, Li D, Chen H, Gao C. A correlation study of protein adsorption and cell behaviors on substrates with different densities of PEG chains. Colloids Surf B Biointerfaces 2014; 122:134-142. [DOI: 10.1016/j.colsurfb.2014.06.041] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 06/03/2014] [Accepted: 06/19/2014] [Indexed: 11/16/2022]
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12
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Impact of selective fibronectin nanoconfinement on human dental pulp stem cells. Colloids Surf B Biointerfaces 2014; 123:39-48. [PMID: 25200204 DOI: 10.1016/j.colsurfb.2014.08.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 07/15/2014] [Accepted: 08/10/2014] [Indexed: 01/30/2023]
Abstract
In this study, it was aimed to investigate the combinatory effect of biophysical and biochemical factors on human dental pulp stem cells' (hDPSCs) behavior. For this purpose, well-defined nanotopography of nanowells with two different pitch size of 109 nm and 341 nm were prepared on polyhydroxymethylsiloxane (PHMS) by using colloidal particles nanofabrication. The nanopatterned PHMS surfaces (PHMS/109 and PHMS/341) were subsequently used for fibronectin (Fn) adsorption. With this approach, nanotopographical details were combined with biochemical signals from Fn. Depending upon the size of cavities created by the nanowells, Fn molecules followed a site-selective adsorption. While they adsorbed both inside and outside the nanowells of PHMS/341, they preferred to adsorb outside the cavities of PHMS/109 surfaces. Human dental pulp stem cells were cultured on nanopatterned PHMS with or without Fn adsorption in the presence and absence of serum. Scanning electron microscopy and fluorescence microscopy analyses showed the interaction of cells was dependent on nanotopography size especially in serum-free medium. Furthermore, hDPSCs' morphology and cytoskeletal organization changed in correlation with preferential Fn adsorption. On Fn adsorbed PHMS/109 surfaces, cells displayed stretched bundles whereas, they showed extensive spreading and followed the Fn adsorbed sites inside the cavities of PHMS/341 surfaces. The observed effects are interpreted in terms of the preferential exposure of different Fn epitopes occurring on PHMS/109 and PHMS/341 as a consequence of the different hydrophilic/hydrophobic adsorbing surface.
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Bhushan B, Schricker SR. A review of block copolymer-based biomaterials that control protein and cell interactions. J Biomed Mater Res A 2013; 102:2467-80. [PMID: 23893878 DOI: 10.1002/jbm.a.34887] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 07/11/2013] [Accepted: 07/17/2013] [Indexed: 11/07/2022]
Abstract
Block copolymers posses the ability to phase separate into micro and nanoscale patterns resulting in nonhomogeneous surfaces and solids. This nonhomogeneity has been harnessed to improve mechanical properties, control degradation, and add functionality to biomaterials. The ability of block copolymers to generate a wide variety of surface chemistries and morphologies can also be harnessed to control protein adsorption, protein conformation, and cell adhesion. Proteins and cells will respond to periodically structured surfaces, so block copolymers have a great deal of potential as biomaterials. This review will explore the ability of block copolymers to control specific biological responses such as cell adhesion, protein adsorption and conformation, parameters that govern the overall host response to a material. In addition, some of the specific applications of block copolymer, antithrombogenic materials and their ability to pattern proteins, will be discussed.
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Affiliation(s)
- Bharat Bhushan
- Nanoprobe Laboratory for Bio- and Nanotechnology and Biomimetics, The Ohio State University, Columbus, Ohio, 43210
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Giamblanco N, Martines E, Marletta G. Laminin adsorption on nanostructures: switching the molecular orientation by local curvature changes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:8335-8342. [PMID: 23742648 DOI: 10.1021/la304644z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This work addresses the influence that the nanometric features of biologically relevant surfaces have on the conformation and properties of adsorbed laminin. It was observed that the adsorption kinetics and the nanomorphology of laminin were affected by the change in local curvature of chemically homogeneous nanostructured surfaces. The nanostructured surfaces were prepared by exploiting the self-assembly process of carboxylated polystyrene NPs, with diameters of 45, 109, and 209 nm, onto a polyelectrolyte multilayer formed by alternate deposition of poly(acrylic acid) and poly(allylamine hydrochloride) on gold. The anchored polymeric NPs were finally coated with a homogeneous layer of poly(allylamine hydrochloride), providing three surfaces with different nanometric local curvature. Atomic force microscopy was employed to characterize the relevant morphological parameters of the nanostructured surfaces. Quartz crystal microbalance with dissipation monitoring was employed to determine the adsorbed mass of laminin as well as its adsorption rate as a function of the local surface curvature. A model is proposed to explain the higher and faster laminin adsorption on surfaces with lower local curvature, where a switching of laminin anchoring orientation from a side-on to an end-on geometry can be predicted by a simple curvature-dependent parameter, γ, connecting the average nanostructure height h and the macromolecule radius of gyration R(g). The results provide a framework to understand the dependence of biomolecule orientation on local nanostructure.
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Affiliation(s)
- Nicoletta Giamblanco
- Laboratory for Molecular Surfaces and Nanotechnology (LAMSUN), Dipartimento di Scienze Chimiche, Università di Catania and CSGI, Viale A. Doria 6, 95125 Catania, Italy
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Maciel J, Oliveira MI, Gonçalves RM, Barbosa MA. The effect of adsorbed fibronectin and osteopontin on macrophage adhesion and morphology on hydrophilic and hydrophobic model surfaces. Acta Biomater 2012; 8:3669-77. [PMID: 22705043 DOI: 10.1016/j.actbio.2012.06.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Revised: 05/08/2012] [Accepted: 06/07/2012] [Indexed: 12/11/2022]
Abstract
Macrophages play a crucial role in the host response to biomaterials. Here we investigated the effect of adsorbed fibronectin (FN) and osteopontin (OPN), two important proteins for tissue repair, on macrophage adhesion and morphology. Since cell-biomaterial interactions are modulated via proteins adsorbed onto biomaterial surfaces, FN and OPN were adsorbed on model self-assembled monolayers (SAMs) of alkanethiols on gold with different functional terminal groups (CH(3), OH and tetra(ethylene-glycol)). The initial interaction of inflammatory cells with a biomaterial is crucial for the ensuing phases of an inflammatory reaction. For this reason short-term cultures of primary human macrophages were performed. To account for the competitive adsorption of other proteins serum was added to the culture medium and the effect compared with serum-free medium cultures. In the presence of serum hydrophilic surfaces increased macrophage adhesion. In particular, FN induced a higher cell density, while OPN tended to decrease it. In serum-free medium cell adhesion was greater on hydrophobic surfaces, except for OPN-coated SAMs. Importantly, FN no longer enhanced macrophage adhesion, while OPN maintained its inhibitory effect. Cell polarization studies indicated that macrophage morphology variations induced by surface chemistry are overcome by pre-adsorbed OPN. Taken together our results show that in the presence of serum macrophage adhesion is promoted by FN hydrophilic surfaces, but impaired on OPN-coated surfaces. The effects of inhibited macrophage adhesion on macrophage fusion, and its relevance to the initial stages of the inflammatory response to biomaterials are discussed.
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Affiliation(s)
- J Maciel
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
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16
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Min X, Tang M, Jiao Y, Zhou C. The Correlation between Fibronectin Adsorption and Fibroblast Cell Behaviors on Chitosan/Poly(
ϵ
-Caprolactone) Blend Films. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 23:1421-35. [DOI: 10.1163/092050611x582858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Xiang Min
- a Department of Materials Science and Engineering , Jinan University , Guangzhou , 510632 , P. R. China
- b Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Jinan University , Guangzhou , 510632 , P. R. China
| | - Minjian Tang
- a Department of Materials Science and Engineering , Jinan University , Guangzhou , 510632 , P. R. China
- b Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Jinan University , Guangzhou , 510632 , P. R. China
| | - Yanpeng Jiao
- a Department of Materials Science and Engineering , Jinan University , Guangzhou , 510632 , P. R. China
- b Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Jinan University , Guangzhou , 510632 , P. R. China
| | - Changren Zhou
- a Department of Materials Science and Engineering , Jinan University , Guangzhou , 510632 , P. R. China
- b Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Jinan University , Guangzhou , 510632 , P. R. China
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17
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Palacio MLB, Schricker SR, Bhushan B. Block copolymer arrangement and composition effects on protein conformation using atomic force microscope-based antigen-antibody adhesion. J Biomed Mater Res A 2012; 100:978-88. [PMID: 22278846 DOI: 10.1002/jbm.a.34033] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Accepted: 12/05/2011] [Indexed: 01/08/2023]
Abstract
The conformational changes of fibronectin (FN) deposited on various block copolymers where one block is composed of poly(methyl methacrylate) (PMMA) and the other block is either poly(acrylic acid) (PAA) or poly(2-hydroxyethyl methacrylate) (PHEMA) were investigated using a functionalized atomic force microscope (AFM) tip. The tip was modified with an antibody sensitive to the exposure of the arginine-glycine-aspartic acid (RGD) groups in FN. By studying the adhesive interactions between the antibody and the proteins adsorbed on the block copolymer surface and phase imaging, it was found that the triblock copolymers PAA-b-PMMA-b-PAA and PMMA-b-PHEMA-b-PMMA, which both have large domain sizes, are conducive to the exposure of the FN RGD groups on the surface. On the basis of these results, it is concluded that the surface chemistry as well as the nanomorphology dictated by the block copolymer arrangement could both tune protein conformation and orientation and optimize cell adhesion to the biomaterial surface.
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Affiliation(s)
- M L B Palacio
- Nanoprobe Laboratory for Bio- & Nanotechnology and Biomimetics, The Ohio State University, Columbus, Ohio 43210, USA
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18
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Application of quartz crystal microbalance with dissipation monitoring technology for studying interactions of poxviral proteins with their ligands. Methods Mol Biol 2012; 890:289-303. [PMID: 22688774 DOI: 10.1007/978-1-61779-876-4_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Poxviruses are one of the most complex of animal viruses and encode for over 150 proteins. The interactions of many of the poxviral-encoded proteins with host proteins, as well as with other proteins, such as transcription complexes, have been well characterized at the qualitative level. Some have also been characterized quantitatively by two hybrid systems and surface plasmon resonance approaches. Presented here is an alternative approach that can enable the understanding of complex interactions with multiple ligands. The example given is that of vaccinia virus complement control protein (VCP). The complement system forms the first line of defense against microorganisms and a failure to appropriately regulate it is implicated in many inflammatory disorders, such as traumatic brain injury, Alzheimer's disease (AD), and rheumatoid arthritis. The complement component C3 is central to the complement activation. Complement regulatory proteins, capable of binding to the central complement component C3, may therefore effectively be employed for the treatment and prevention of these disorders. There are many biochemical and/or immunoassays available to study the interaction of proteins with complement components. However, protocols for many of them are time consuming, and not all assays are useful for multiple screening. In addition, most of these assays may not give information regarding the nature of binding, the number of molecules interacting with the complement component C3, as well as kinetics of binding. Some of the assays may require labeling which may induce changes in protein confirmation. We report a protocol for an assay based on quartz crystal microbalance with dissipation monitoring (QCM-D) technology, which can effectively be employed to study poxviral proteins for their ability to interact with their ligand. A protocol was developed in our laboratories to study the interaction of VCP with the complement component C3 using Q-sense (D-300), equipment based on QCM-D technology. The protocol can also be used as a prototype for studying both proteins and small-sized compounds (for use as anti-poxvirals) for their ability to interact with and/or inhibit the activity of their ligands.
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Palacio MLB, Schricker SR, Bhushan B. Protein conformation changes on block copolymer surfaces detected by antibody-functionalized atomic force microscope tips. J Biomed Mater Res A 2011; 100:18-25. [PMID: 21972205 DOI: 10.1002/jbm.a.33219] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2011] [Revised: 07/29/2011] [Accepted: 08/01/2011] [Indexed: 12/12/2022]
Abstract
Conformational changes of fibronectin (Fn) deposited on poly(methyl methacrylate) and poly(acrylic acid) block copolymers with identical chemical compositions were detected using an antibody-functionalized atomic force microscope (AFM) tip. Based on the antibody-protein adhesive force maps and phase imaging, it was found that the nanomorphology of the triblock copolymer is conducive to the exposure of the arginine-glycine-aspartic acid (RGD) groups in Fn. For the first time, X-ray photoelectron spectroscopy was used to elucidate surface chemical composition and confirm AFM results. The findings demonstrate that block copolymer nanomorphology can be used to regulate protein conformation and potentially cellular response.
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Affiliation(s)
- Manuel L B Palacio
- Nanoprobe Laboratory for Bio- & Nanotechnology and Biomimetics, The Ohio State University, Columbus, Ohio 43210, USA
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Ren X, Wu Y, Cheng Y, Ma H, Wei S. Fibronectin and bone morphogenetic protein-2-decorated poly(OEGMA-r-HEMA) brushes promote osseointegration of titanium surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:12069-12073. [PMID: 21888364 DOI: 10.1021/la202438u] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
To be better used as medical implants in orthopedic and dental clinical applications, titanium and titanium-based alloys need to be capable of inducing osteogenesis. Here we describe a method that allows the facile decoration of titanium surfaces to impart an osteogenesis capacity. A Ti surface was first deposited on a poly(OEGMA-r-HEMA) film using surface-initiated atom-transfer radical polymerization (SI-ATRP) with the further step of carboxylation. The modified surfaces were resistant to cell adhesion. Fibronectin (FN) and recombinant human bone morphogenetic protein-2 (rhBMP-2) were further immobilized onto p(OEGMA-r-HEMA) matrices. Our results demonstrate that the FN- and rhBMP-2-conjugated polymer surfaces could induce the adhesion of MC3T3 cells on Ti surfaces. Moreover, the protein-tethered surface exhibited enhanced cell differentiation in terms of alkaline phosphatase activity compared to that of the pristine Ti surface at similar cell proliferation rates. This research establishes a simple modification method of Ti surfaces via Ti-thiolate self-assembled monolayers (SAMs) and SI-ATRP and identifies a dual-functional Ti surface that combines antifouling and osseointegration promotion.
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Affiliation(s)
- Xiaoshuai Ren
- Center for Biomedical Materials and Tissue Engineering, Academy for Advanced Interdisciplinary Studies, School and Hospital of Stomatology, Peking University, 100871 Beijing, PR China
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