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Lentz S, Trossmann VT, Borkner CB, Beyersdorfer V, Rottmar M, Scheibel T. Structure-Property Relationship Based on the Amino Acid Composition of Recombinant Spider Silk Proteins for Potential Biomedical Applications. ACS APPLIED MATERIALS & INTERFACES 2022; 14:31751-31766. [PMID: 35786828 DOI: 10.1021/acsami.2c09590] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Improving biomaterials by engineering application-specific and adjustable properties is of increasing interest. Most of the commonly available materials fulfill the mechanical and physical requirements of relevant biomedical applications, but they lack biological functionality, including biocompatibility and prevention of microbial infestation. Thus, research has focused on customizable, application-specific, and modifiable surface coatings to cope with the limitations of existing biomaterials. In the case of adjustable degradation and configurable interaction with body fluids and cells, these coatings enlarge the applicability of the underlying biomaterials. Silks are interesting coating materials, e.g., for implants, since they exhibit excellent biocompatibility and mechanical properties. Herein, we present putative implant coatings made of five engineered recombinant spider silk proteins derived from the European garden spider Araneus diadematus fibroins (ADF), differing in amino acid sequence and charge. We analyzed the influence of the underlying amino acid composition on wetting behavior, blood compatibility, biodegradability, serum protein adsorption, and cell adhesion. The outcome of the comparison indicates that spider silk coatings can be engineered for explicit biomedical applications.
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Affiliation(s)
- Sarah Lentz
- Lehrstuhl Biomaterialien, Fakultät für Ingenieurwissenschaften, Universität Bayreuth, Rüdiger-Bormann-Str. 1, 95447 Bayreuth, Germany
| | - Vanessa T Trossmann
- Lehrstuhl Biomaterialien, Fakultät für Ingenieurwissenschaften, Universität Bayreuth, Rüdiger-Bormann-Str. 1, 95447 Bayreuth, Germany
| | - Christian B Borkner
- Lehrstuhl Biomaterialien, Fakultät für Ingenieurwissenschaften, Universität Bayreuth, Rüdiger-Bormann-Str. 1, 95447 Bayreuth, Germany
| | - Vivien Beyersdorfer
- Lehrstuhl Biomaterialien, Fakultät für Ingenieurwissenschaften, Universität Bayreuth, Rüdiger-Bormann-Str. 1, 95447 Bayreuth, Germany
| | - Markus Rottmar
- Laboratory for Materials-Biology Interactions, Empa Swiss Federal Laboratories for Materials Science and Technology, CH-9014 St. Gallen, Switzerland
| | - Thomas Scheibel
- Lehrstuhl Biomaterialien, Fakultät für Ingenieurwissenschaften, Universität Bayreuth, Rüdiger-Bormann-Str. 1, 95447 Bayreuth, Germany
- Bayerisches Polymerinstitut (BPI), Bayreuther Zentrum für Kolloide und Grenzflächen (BZKG), Bayreuther Zentrum für Molekulare Biowissenschaften (BZMB), Bayreuther Materialzentrum (BayMAT), Universität Bayreuth, Universitätsstr. 30, 95440 Bayreuth, Germany
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Fernández-Hernán JP, López AJ, Torres B, Martínez-Campos E, Matykina E, Rams J. Anticorrosion and Cytocompatibility Assessment of Graphene-Doped Hybrid Silica and Plasma Electrolytic Oxidation Coatings for Biomedical Applications. ACS Biomater Sci Eng 2021; 7:5861-5877. [PMID: 34748311 PMCID: PMC8939847 DOI: 10.1021/acsbiomaterials.1c00326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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Magnesium AZ31 alloy substrates were
coated with different coatings,
including sol–gel silica-reinforced with graphene nanoplatelets,
sol–gel silica, plasma electrolytic oxidation (PEO), and combinations
of them, to improve cytocompatibility and control the corrosion rate.
Electrochemical corrosion tests, as well as hydrogen evolution tests,
were carried out using Hanks’ solution as the electrolyte to
assess the anticorrosion behavior of the different coating systems
in a simulated body fluid. Preliminary cytocompatibility assessment
of the different coating systems was carried out by measuring the
metabolic activity, deoxyribonucleic acid quantification, and the
cell growth of premyoblastic C2C12-GFP cell cultures on the surface
of the different coating systems. Anticorrosion behavior and cytocompatibility
were improved with the application of the different coating systems.
The use of combined PEO + SG and PEO + SG/GNP coatings significantly
decreased the degradation of the specimens. The monolayer sol–gel
coatings, with and without GNPs, presented the best cytocompatibility
improvement.
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Affiliation(s)
- Juan P Fernández-Hernán
- Departamento de Matemática Aplicada, Ciencia e Ingeniería de Materiales y Tecnología Electrónica, ESCET, Universidad Rey Juan Carlos, C/Tulipán s/n, 28933 Móstoles, Spain
| | - Antonio J López
- Departamento de Matemática Aplicada, Ciencia e Ingeniería de Materiales y Tecnología Electrónica, ESCET, Universidad Rey Juan Carlos, C/Tulipán s/n, 28933 Móstoles, Spain
| | - Belén Torres
- Departamento de Matemática Aplicada, Ciencia e Ingeniería de Materiales y Tecnología Electrónica, ESCET, Universidad Rey Juan Carlos, C/Tulipán s/n, 28933 Móstoles, Spain
| | - Enrique Martínez-Campos
- Instituto de estudios biofuncionales, ICTP-CSIC, Universidad Complutense, Paseo Juan XXIII No 1, 28045 Madrid, Spain
| | - Endzhe Matykina
- Departamento de Ingeniería Química y de Materiales, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
| | - Joaquín Rams
- Departamento de Matemática Aplicada, Ciencia e Ingeniería de Materiales y Tecnología Electrónica, ESCET, Universidad Rey Juan Carlos, C/Tulipán s/n, 28933 Móstoles, Spain
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Abstract
Nanotechnology has gained an increased interest in several different areas of biotechnology including the drug delivery via nanofibers. Self-assembly, phase separation and electrospinning can all be used to successfully generate nanofibers with sizes well within the range of those of the fibers present in the native extracellular matrix (50-500 nm). In this article, the authors introduced the most popular applications of nanofibers related to the delivery of antimicrobial agents for infectious diseases. To date, only a few in-vivo studies are available at present to demonstrate its clinical potential; most of the studies are of exploratory nature and rely mostly on in-vitro experiments. Therefore, further advancement in the production and clinical performance of drug-loaded nanofibrous matrices seems necessary.
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Affiliation(s)
- Dave Wei-Chih Chen
- Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Shih-Jung Liu
- Department of Mechanical Engineering, Chang Gung University, Tao-Yuan, Taiwan
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Mueller B, Koch D, Lutz R, Schlegel KA, Treccani L, Rezwan K. A novel one-pot process for near-net-shape fabrication of open-porous resorbable hydroxyapatite/protein composites and in vivo assessment. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 42:137-45. [PMID: 25063103 DOI: 10.1016/j.msec.2014.05.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 04/29/2014] [Accepted: 05/13/2014] [Indexed: 01/25/2023]
Abstract
We present a mild one-pot freeze gelation process for fabricating near-net, complex-shaped hydroxyapatite scaffolds and to directly incorporate active proteins during scaffold processing. In particular, the direct protein incorporation enables a simultaneous adjustment and control of scaffold microstructure, porosity, resorbability and enhancement of initial mechanical and handling stability. Two proteins, serum albumin and lysozyme, are selected and their effect on scaffold stability and microstructure investigated by biaxial strength tests, electron microscopy, and mercury intrusion porosimetry. The resulting hydroxyapatite/protein composites feature adjustable porosities from 50% to 70% and a mechanical strength ranging from 2 to 6 MPa comparable to that of human spongiosa without any sintering step. Scaffold degradation behaviour and protein release are assessed by in vitro studies. A preliminary in vivo assessment of scaffold biocompatibility and resorption behaviour in adult domestic pigs is discussed. After implantation, composites were resorbed up to 50% after only 4 weeks and up to 65% after 8 weeks. In addition, 14% new bone formation after 4 weeks and 37% after 8 weeks were detected. All these investigations demonstrate the outstanding suitability of the one-pot-process to create, in a customisable and reliable way, biocompatible scaffolds with sufficient mechanical strength for handling and surgical insertion, and for potential use as biodegradable bone substitutes and versatile platform for local drug delivery.
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Affiliation(s)
- Berit Mueller
- University of Bremen, Advanced Ceramics, Am Biologischen Garten 2, 28359 Bremen, Germany.
| | - Dietmar Koch
- German Aerospace Center, Ceramic Composite Structures, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany.
| | - Rainer Lutz
- University of Erlangen-Nuremberg, Department of Oral and Maxillofacial Surgery, Glueckstrasse 11, 91054 Erlangen, Germany.
| | - Karl A Schlegel
- University of Erlangen-Nuremberg, Department of Oral and Maxillofacial Surgery, Glueckstrasse 11, 91054 Erlangen, Germany.
| | - Laura Treccani
- University of Bremen, Advanced Ceramics, Am Biologischen Garten 2, 28359 Bremen, Germany.
| | - Kurosch Rezwan
- University of Bremen, Advanced Ceramics, Am Biologischen Garten 2, 28359 Bremen, Germany.
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Fatnassi M, Tourné-Péteilh C, Mineva T, Devoisselle JM, Gaveau P, Fayon F, Alonso B. Drug nano-domains in spray-dried ibuprofen-silica microspheres. Phys Chem Chem Phys 2012; 14:12285-94. [PMID: 22868488 DOI: 10.1039/c2cp42092a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Silica microspheres encapsulating ibuprofen in separated domains at the nanometre scale are formed by spray-drying and sol-gel processes. A detailed (1)H and (13)C NMR study of these microspheres shows that ibuprofen molecules are mobile and are interacting through hydrogen bonds with other ibuprofen molecules. (1)H magnetisation exchange NMR experiments were employed to characterize the size of the ibuprofen domains at the nanometre scale. These domains are solely formed by ibuprofen, and their diameters are estimated to be ∼40 nm in agreement with TEM observations. The nature and formation of these particular texture and drug dispersion are discussed.
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Affiliation(s)
- Mohamed Fatnassi
- Institut Charles Gerhardt de Montpellier, ICGM-MACS, UMR 5253 CNRS-ENSCM-UM2-UM1, 8 rue de l'Ecole Normale, 34296 Montpellier cedex 5, France
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Recent progress in inorganic and composite coatings with bactericidal capability for orthopaedic applications. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2010; 7:22-39. [PMID: 21050895 DOI: 10.1016/j.nano.2010.10.005] [Citation(s) in RCA: 199] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2009] [Revised: 10/10/2010] [Accepted: 10/20/2010] [Indexed: 02/07/2023]
Abstract
UNLABELLED This review covers the most recent developments of inorganic and organic-inorganic composite coatings for orthopedic implants, providing the interface with living tissue and with potential for drug delivery to combat infections. Conventional systemic delivery of drugs is an inefficient procedure that may cause toxicity and may require a patient's hospitalization for monitoring. Local delivery of antibiotics and other bioactive molecules maximizes their effect where they are required, reduces potential systemic toxicity and increases timeliness and cost efficiency. In addition, local delivery has broad applications in combating infection-related diseases. Polymeric coatings may present some disadvantages. These disadvantages include limited chemical stability, local inflammatory reactions, uncontrolled drug-release kinetics, late thrombosis and restenosis. As a result, embedding of bioactive compounds and biomolecules within inorganic coatings (bioceramics, bioactive glasses) is attracting significant attention. Recently nanoceramics have attracted interest because surface nanostructuring allows for improved cellular adhesion, enhances osteoblast proliferation and differentiation, and increases biomineralization. Organic-inorganic composite coatings, which combine biopolymers and bioactive ceramics that mimick bone structure to induce biomineralization, with the addition of biomolecules, represent alternative systems and ideal materials for "smart" implants. In this review, emphasis is placed on materials and processing techniques developed to advance the therapeutic use of biomolecules-eluting coatings, based on nanostructured ceramics. One part of this report is dedicated to inorganic and composite coatings with antibacterial functionality. FROM THE CLINICAL EDITOR Inorganic and composite nanotechnology-based coating methods have recently been developed for orthopedic applications, with the main goal to provide bactericide and other enhanced properties, which may result in reduced need for pharmaceutical interventions and overall more cost effective orthopedic procedures. This review discusses key aspects of the above developments.
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Mahltig B, Swaboda C, Roessler A, Böttcher H. Functionalising wood by nanosol application. ACTA ACUST UNITED AC 2008. [DOI: 10.1039/b718903f] [Citation(s) in RCA: 134] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Pollmann K, Merroun M, Raff J, Hennig C, Selenska-Pobell S. Manufacturing and characterization of Pd nanoparticles formed on immobilized bacterial cells. Lett Appl Microbiol 2006; 43:39-45. [PMID: 16834719 DOI: 10.1111/j.1472-765x.2006.01919.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS To fabricate and analyse Pd nanoparticles on immobilized bacterial cells. METHODS AND RESULTS Biological ceramic composites (biocers) were used as a template to produce Pd(0) nanoparticles. The metal-binding cells of the uranium mining waste pile isolate, Bacillus sphaericus JG-A12 were used as a biological component of the biocers and immobilized by using sol-gel technology. Vegetative cells and surface-layer proteins of this strain are known to bind high amounts of Pd(II) that can be reduced to Pd(0) particles by the addition of a reducing agent. Sorption of Pd(II) by the biocers from a metal complex solution was studied by inductively coupled plasma mass spectroscopy analyses. After embedding into sol-gel ceramics, the cells retained their Pd(II)-binding capability. Pd(0) nanoclusters were produced by the addition of hydrogen as reducing agent after the sorption of Pd(II). The interactions of Pd(0) with the biocers and the formed Pd(0) nanoparticles were investigated by extended X-ray absorption fine structure spectroscopy. The particles had a size of 0.6-0.8 nm. CONCLUSIONS Bacterial cells that were immobilized by embedding into sol-gel ceramics were used as a template to produce Pd nanoclusters of a size smaller than 1 nm. These particles possess interesting physical and chemical properties. SIGNIFICANCE AND IMPACT OF THE STUDY The use of embedded bacterial cells as template enabled the fabrication of immobilized Pd(0) nanoparticles. These particles are highly interesting for technical applications, such as the development of novel catalysts.
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Affiliation(s)
- K Pollmann
- Institute of Radiochemistry, Forschungszentrum Rossendorf, Dresden, Germany.
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Pollmann K, Raff J, Merroun M, Fahmy K, Selenska-Pobell S. Metal binding by bacteria from uranium mining waste piles and its technological applications. Biotechnol Adv 2006; 24:58-68. [PMID: 16005595 DOI: 10.1016/j.biotechadv.2005.06.002] [Citation(s) in RCA: 123] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2005] [Accepted: 06/15/2005] [Indexed: 11/29/2022]
Abstract
Uranium mining waste piles, heavily polluted with radionuclides and other toxic metals, are a reservoir for bacteria that have evolved special strategies to survive in these extreme environments. Understanding the mechanisms of bacterial adaptation may enable the development of novel bioremediation strategies and other technological applications. Cell isolates of Bacillus sphaericus JG-A12 from a uranium mining waste pile in Germany are able to accumulate high amounts of toxic metals such as U, Cu, Pb, Al, and Cd as well as precious metals. Some of these metals, i.e. U, Cu, Pd(II), Pt(II) and Au(III), are also bound by the highly orderd paracrystalline proteinaceous surface layer (S-layer) that envelopes the cells of this strain. These special capabilities of the cells and the S-layer proteins of B. sphaericus JG-A12 are highly interesting for the clean-up of uranium contaminated waste waters, for the recovery of precious metals from electronic wastes, and for the production of metal nanoclusters. The fabricated nanoparticles are promising for the development of novel catalysts. This work reviews the molecular biology of the S-layer of the strain JG-A12 and the S-layer dependent interactions of the bacterial cells with metals. It presents future perspectives for their application in bioremediation and nanotechnology.
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Affiliation(s)
- K Pollmann
- Institute of Radiochemistry, Dresden, Germany.
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Pioselli B, Bettati S, Mozzarelli A. Confinement and crowding effects on tryptophan synthase alpha2beta2 complex. FEBS Lett 2005; 579:2197-202. [PMID: 15811341 DOI: 10.1016/j.febslet.2005.03.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2004] [Revised: 02/07/2005] [Accepted: 03/04/2005] [Indexed: 11/25/2022]
Abstract
Biological molecules experience in vivo a highly crowded environment. The investigation of the functional properties of the tryptophan synthase alpha(2)beta(2) complex either entrapped in wet nanoporous silica gels or in the presence of the crowding agents dextran 70 and ficoll 70 indicates that the rates of the conformational transitions associated to catalysis and regulation are reduced, and an open and less catalytically active conformation is stabilized.
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Affiliation(s)
- Barbara Pioselli
- Department of Biochemistry and Molecular Biology, University of Parma, 43100 Parma, Italy
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Haufe H, Thron A, Fiedler D, Mahltig B, Böttcher H. Biocidal nanosol coatings. ACTA ACUST UNITED AC 2005. [DOI: 10.1007/bf02699708] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mahltig B, Haufe H, Böttcher H. Functionalisation of textiles by inorganic sol–gel coatings. ACTA ACUST UNITED AC 2005. [DOI: 10.1039/b505177k] [Citation(s) in RCA: 292] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Böttcher H, Soltmann U, Mertig M, Pompe W. Biocers: ceramics with incorporated microorganisms for biocatalytic, biosorptive and functional materials development. ACTA ACUST UNITED AC 2004. [DOI: 10.1039/b401724b] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Jin W, Brennan JD. Properties and applications of proteins encapsulated within sol–gel derived materials. Anal Chim Acta 2002. [DOI: 10.1016/s0003-2670(02)00229-5] [Citation(s) in RCA: 416] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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