1
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Eivazzadeh-Keihan R, Mohammadi A, Aghamirza Moghim Aliabadi H, Kashtiaray A, Bani MS, Karimi AH, Maleki A, Mahdavi M. A novel ternary magnetic nanobiocomposite based on tragacanth-silk fibroin hydrogel for hyperthermia and biological properties. Sci Rep 2024; 14:8166. [PMID: 38589455 PMCID: PMC11002001 DOI: 10.1038/s41598-024-58770-9] [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] [Received: 07/01/2023] [Accepted: 04/03/2024] [Indexed: 04/10/2024] Open
Abstract
This study involves the development of a new nanocomposite material for use in biological applications. The nanocomposite was based on tragacanth hydrogel (TG), which was formed through cross-linking of Ca2+ ions with TG polymer chains. The utilization of TG hydrogel and silk fibroin as natural compounds has enhanced the biocompatibility, biodegradability, adhesion, and cell growth properties of the nanobiocomposite. This advancement makes the nanobiocomposite suitable for various biological applications, including drug delivery, wound healing, and tissue engineering. Additionally, Fe3O4 magnetic nanoparticles were synthesized in situ within the nanocomposite to enhance its hyperthermia efficiency. The presence of hydrophilic groups in all components of the nanobiocomposite allowed for good dispersion in water, which is an important factor in increasing the effectiveness of hyperthermia cancer therapy. Hemolysis and 3-(4,5 dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide assays were conducted to evaluate the safety and efficacy of the nanobiocomposite for in-vivo applications. Results showed that even at high concentrations, the nanobiocomposite had minimal hemolytic effects. Finally, the hyperthermia application of the hybrid scaffold was evaluated, with a maximum SAR value of 41.2 W/g measured in the first interval.
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Affiliation(s)
- Reza Eivazzadeh-Keihan
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran.
| | - Adibeh Mohammadi
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | | | - Amir Kashtiaray
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran
| | - Milad Salimi Bani
- Department of Biomedical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran
| | - Amir Hossein Karimi
- Mechanical Engineering Faculty, Isfahan University of Technology, Isfahan, Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran, 16846-13114, Iran.
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
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2
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Gutmann M, Reinhardt D, Seidensticker C, Raschig M, Hahn L, Moscaroli A, Behe M, Meinel L, Lühmann T. Matrix Metalloproteinase-Responsive Delivery of PEGylated Fibroblast Growth Factor 2. ACS Biomater Sci Eng 2024; 10:156-165. [PMID: 37988287 DOI: 10.1021/acsbiomaterials.3c01511] [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: 11/23/2023]
Abstract
Attachment of polyethylene glycol (PEG) chains is a common, well-studied, and Food and Drug Administration-approved method to address the pharmacokinetic challenges of therapeutic proteins. Occasionally, PEGylation impairs the activity of pharmacodynamics (PD). To overcome this problem, disease-relevant cleavable linkers between the polymer and the therapeutic protein can unleash full PD by de-PEGylating the protein at its target site. In this study, we engineered a matrix metalloproteinase (MMP)-responsive fibroblast growth factor 2 (FGF-2) mutant that was site-specifically extended with a PEG polymer chain. Using bioinspired strategies, the bioconjugate was designed to release the native protein at the desired structure/environment with preservation of the proliferative capacity in vitro on NIH3T3 cells. In vivo, hepatic exposure was diminished but not its renal distribution over time compared to unconjugated FGF-2. By releasing the growth factor from the PEG polymer in response to MMP cleavage, restored FGF-2 may enter hard-to-reach tissues and activate cell surface receptors or nuclear targets.
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Affiliation(s)
- Marcus Gutmann
- Institute of Pharmacy and Food Chemistry, University of Würzburg, DE-97074 Würzburg, Germany
| | - Debora Reinhardt
- Institute of Pharmacy and Food Chemistry, University of Würzburg, DE-97074 Würzburg, Germany
| | - Christian Seidensticker
- Medizinische Klinik und Poliklinik Für Innere Medizin II, Klinikum Rechts der Isar der TU München, Ismaninger Str. 22, 81675 Munich, Germany
| | - Martina Raschig
- Institute of Pharmacy and Food Chemistry, University of Würzburg, DE-97074 Würzburg, Germany
| | - Lukas Hahn
- Institute of Pharmacy and Food Chemistry, University of Würzburg, DE-97074 Würzburg, Germany
| | - Alessandra Moscaroli
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - Martin Behe
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - Lorenz Meinel
- Institute of Pharmacy and Food Chemistry, University of Würzburg, DE-97074 Würzburg, Germany
- Helmholtz Institute for RNA-Based Infection Research (HIRI), Helmholtz Center for Infection Research (HZI), DE-97080 Würzburg, Germany
| | - Tessa Lühmann
- Institute of Pharmacy and Food Chemistry, University of Würzburg, DE-97074 Würzburg, Germany
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3
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Matthew SL, Seib FP. Silk Bioconjugates: From Chemistry and Concept to Application. ACS Biomater Sci Eng 2024; 10:12-28. [PMID: 36706352 PMCID: PMC10777352 DOI: 10.1021/acsbiomaterials.2c01116] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 12/09/2022] [Indexed: 01/28/2023]
Abstract
Medical silks have captured global interest. While silk sutures have a long track record in humans, silk bioconjugates are still in preclinical development. This perspective examines key advances in silk bioconjugation, including the fabrication of silk-protein conjugates, bioconjugated silk particles, and bioconjugated substrates to enhance cell-material interactions in two and three dimensions. Many of these systems rely on chemical modification of the silk biopolymer, often using carbodiimide and reactive ester chemistries. However, recent progress in enzyme-mediated and click chemistries has expanded the molecular toolbox to enable biorthogonal, site-specific conjugation in a single step when combined with recombinant silk fibroin tagged with noncanonical amino acids. This perspective outlines key strategies available for chemical modification, compares the resulting silk conjugates to clinical benchmarks, and outlines open questions and areas that require more work. Overall, this assessment highlights a domain of new sunrise capabilities and development opportunities for silk bioconjugates that may ultimately offer new ways of delivering improved healthcare.
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Affiliation(s)
- Saphia
A. L. Matthew
- Strathclyde
Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, U.K.
| | - F. Philipp Seib
- Strathclyde
Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, U.K.
- Branch
Bioresources, Fraunhofer Institute for Molecular
Biology and Applied Ecology, Ohlebergsweg 12, 35392 Giessen, Germany
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4
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Yang L, Zhang Y, Xiao Z, Zhang W, Li L, Fan Y. Electrospun Polymeric Fibers Decorated with Silk Microcapsules via Encapsulation and Surface Immobilization for Drug Delivery. Macromol Biosci 2023; 23:e2300190. [PMID: 37483061 DOI: 10.1002/mabi.202300190] [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] [Received: 05/04/2023] [Revised: 07/13/2023] [Accepted: 07/20/2023] [Indexed: 07/25/2023]
Abstract
Hollow polymer microcapsules as drug carriers have the advantages of drug protection, storage, and controlled release. Microcapsules combined with tissue engineering scaffolds such as electrospun microfibers can enhance long-term local drug retention. However, the combination methods of microcapsules and fibers still need to be further explored. Here, different technical approaches to functionalize electrospun polycaprolactone (PCL) microfibers with silk fibroin (SF) microcapsules through encapsulation and surface immobilization are developed, including direct blending and emulsion electrospinning for encapsulation, as well as covalent and cleavable disulfide-linkage for surface immobilization. The results of "blending" approach show that silk microcapsules with different sizes could be uniformly encapsulated inside electrospun fibers without aggregation. To further reduce the use of organic solvents, the microcapsules in the aqueous phase can be uniformly distributed in the PCL organic phase and successfully electrospun into fibers using surfactant span-80. For surface immobilization, silk microcapsules are efficiently covalent binding to the surface of electrospun PCL fibers via click chemistry and exhibited noncytotoxic. Based on this method, with the incorporation of a disulfide bond, the linkages between microcapsule and fiber could be cleaved under reducing conditions. These microcapsule-electrospun fiber combination methods provide sufficient options for different drug delivery requirements.
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Affiliation(s)
- Lingbing Yang
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Yilin Zhang
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Zeyun Xiao
- Department of Pharmacy, Logistics University of People's Armed Police Forces, Tianjin, 300309, China
| | - Wenbo Zhang
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Linhao Li
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Yubo Fan
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
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5
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Falcucci T, Radke M, Sahoo JK, Hasturk O, Kaplan DL. Multifunctional silk vinyl sulfone-based hydrogel scaffolds for dynamic material-cell interactions. Biomaterials 2023; 300:122201. [PMID: 37348323 PMCID: PMC10366540 DOI: 10.1016/j.biomaterials.2023.122201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 06/24/2023]
Abstract
Biochemical and mechanical interactions between cells and the surrounding extracellular matrix influence cell behavior and fate. Mimicking these features in vitro has prompted the design and development of biomaterials, with continuing efforts to improve tailorable systems that also incorporate dynamic chemical functionalities. The majority of these chemistries have been incorporated into synthetic biomaterials, here we focus on modifications of silk protein with dynamic features achieved via enzymatic, "click", and photo-chemistries. The one-pot synthesis of vinyl sulfone modified silk (SilkVS) can be tuned to manipulate the degree of functionalization. The resultant modified protein-based material undergoes three different gelation mechanisms, enzymatic, "click", and light-induced, to generate hydrogels for in vitro cell culture. Further, the versatility of this chemical functionality is exploited to mimic cell-ECM interactions via the incorporation of bioactive peptides and proteins or by altering the mechanical properties of the material to guide cell behavior. SilkVS is well-suited for use in in vitro culture, providing a natural protein with both tunable biochemistry and mechanics.
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Affiliation(s)
- Thomas Falcucci
- Tufts University, Department of Biomedical Engineering, Medford, MA, USA
| | - Margaret Radke
- Tufts University, Department of Biomedical Engineering, Medford, MA, USA
| | | | - Onur Hasturk
- Tufts University, Department of Biomedical Engineering, Medford, MA, USA
| | - David L Kaplan
- Tufts University, Department of Biomedical Engineering, Medford, MA, USA.
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6
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Sahoo JK, Hasturk O, Falcucci T, Kaplan DL. Silk chemistry and biomedical material designs. Nat Rev Chem 2023; 7:302-318. [PMID: 37165164 DOI: 10.1038/s41570-023-00486-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2023] [Indexed: 05/12/2023]
Abstract
Silk fibroin has applications in different medical fields such as tissue engineering, regenerative medicine, drug delivery and medical devices. Advances in silk chemistry and biomaterial designs have yielded exciting tools for generating new silk-based materials and technologies. Selective chemistries can enhance or tune the features of silk, such as mechanics, biodegradability, processability and biological interactions, to address challenges in medically relevant materials (hydrogels, films, sponges and fibres). This Review details the design and utility of silk biomaterials for different applications, with particular focus on chemistry. This Review consists of three segments: silk protein fundamentals, silk chemistries and functionalization mechanisms. This is followed by a description of different crosslinking chemistries facilitating network formation, including the formation of composite biomaterials. Utility in the fields of tissue engineering, drug delivery, 3D printing, cell coatings, microfluidics and biosensors are highlighted. Looking to the future, we discuss silk biomaterial design strategies to continue to improve medical outcomes.
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Affiliation(s)
| | - Onur Hasturk
- Department of Biomedical Engineering, Tufts University, Medford, MA, USA
| | - Thomas Falcucci
- Department of Biomedical Engineering, Tufts University, Medford, MA, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA, USA.
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7
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Karimi F, Lau K, Kim HN, Och Z, Lim KS, Whitelock J, Lord M, Rnjak-Kovacina J. Surface Biofunctionalization of Silk Biomaterials Using Dityrosine Cross-Linking. ACS APPLIED MATERIALS & INTERFACES 2022; 14:31551-31566. [PMID: 35793155 DOI: 10.1021/acsami.2c03345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Biofunctionalization of silk biomaterial surfaces with extracellular matrix (ECM) molecules, cell binding peptides, or growth factors is important in a range of applications, including tissue engineering and development of implantable medical devices. Passive adsorption is the most common way to immobilize molecules of interest on preformed silk biomaterials but can lead to random molecular orientations and displacement from the surface, limiting their applications. Herein, we developed techniques for covalent immobilization of biomolecules using enzyme- or photoinitiated formation of dityrosine bonds between the molecule of interest and silk. Using recombinantly expressed domain V of the human basement membrane proteoglycan perlecan (rDV) as a model molecule, we demonstrated that rDV can be covalently immobilized via dityrosine cross-linking without the need to modify rDV or silk biomaterials. Dityrosine-based immobilization resulted in a different molecular orientation to passively absorbed rDV with less C- and N-terminal region exposure on the surface. Dityrosine-based immobilization supported functional rDV immobilization where immobilized rDV supported endothelial cell adhesion, spreading, migration, and proliferation. These results demonstrate the utility of dityrosine-based cross-linking in covalent immobilization of tyrosine-containing molecules on silk biomaterials in the absence of chemical modification, adding a simple and accessible technique to the silk biofunctionalization toolbox.
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Affiliation(s)
- Fatemeh Karimi
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Kieran Lau
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Ha Na Kim
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Zachary Och
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Khoon S Lim
- Light Activated Biomaterials (LAB) Group, Department of Orthopaedic Surgery and Musculoskeletal Medicine, University of Otago Christchurch, Christchurch 8011, New Zealand
| | - John Whitelock
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Megan Lord
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Jelena Rnjak-Kovacina
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
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8
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Hauptstein N, Pouyan P, Wittwer K, Cinar G, Scherf-Clavel O, Raschig M, Licha K, Lühmann T, Nischang I, Schubert US, Pfaller CK, Haag R, Meinel L. Polymer selection impacts the pharmaceutical profile of site-specifically conjugated Interferon-α2a. J Control Release 2022; 348:881-892. [PMID: 35764249 DOI: 10.1016/j.jconrel.2022.05.060] [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: 02/01/2022] [Revised: 04/12/2022] [Accepted: 05/15/2022] [Indexed: 12/15/2022]
Abstract
Conjugation of poly(ethylene glycol) (PEG) to biologics is a successful strategy to favorably impact the pharmacokinetics and efficacy of the resulting bioconjugate. We compare bioconjugates synthesized by strain-promoted azide-alkyne cycloaddition (SPAAC) using PEG and linear polyglycerol (LPG) of about 20 kDa or 40 kDa, respectively, with an azido functionalized human Interferon-α2a (IFN-α2a) mutant. Site-specific PEGylation and LPGylation resulted in IFN-α2a bioconjugates with improved in vitro potency compared to commercial Pegasys. LPGylated bioconjugates had faster disposition kinetics despite comparable hydrodynamic radii to their PEGylated analogues. Overall exposure of the PEGylated IFN-α2a with a 40 kDa polymer exceeded Pegasys, which, in return, was similar to the 40 kDa LPGylated conjugates. The study points to an expanded polymer design space through which the selected polymer class may result in a different distribution of the studied bioconjugates.
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Affiliation(s)
- Niklas Hauptstein
- Institute of Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Paria Pouyan
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Kevin Wittwer
- Paul-Ehrlich-Institute, Division of Veterinary Medicine, Paul-Ehrlich-Str. 51-59, 63225 Langen, Germany
| | - Gizem Cinar
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Oliver Scherf-Clavel
- Institute of Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Martina Raschig
- Institute of Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Kai Licha
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Tessa Lühmann
- Institute of Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Ivo Nischang
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Ulrich S Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Christian K Pfaller
- Paul-Ehrlich-Institute, Division of Veterinary Medicine, Paul-Ehrlich-Str. 51-59, 63225 Langen, Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Lorenz Meinel
- Institute of Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany; Helmholtz Institute for RNA-Based Infection Research (HIRI), 97080 Würzburg, Germany.
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9
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Hausken KG, Frevol RL, Dowdle KP, Young AN, Talusig JM, Holbrook CC, Rubin BK, Murphy AR. Quantitative Functionalization of the Tyrosine Residues in Silk Fibroin through an Amino‐Tyrosine Intermediate. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kian G. Hausken
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
| | - Romane L. Frevol
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
| | - Kimberly P. Dowdle
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
| | - Aleena N. Young
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
| | - Jeremy M. Talusig
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
| | - Carolynne C. Holbrook
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
| | - Benjamin K. Rubin
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
| | - Amanda R. Murphy
- Department of Chemistry Western Washington University 516 High St. Bellingham WA 98225‐9150 USA
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10
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Matthew SAL, Egan G, Witte K, Kaewchuchuen J, Phuagkhaopong S, Totten JD, Seib FP. Smart Silk Origami as Eco-sensors for Environmental Pollution. ACS APPLIED BIO MATERIALS 2022; 5:3658-3666. [PMID: 35575686 PMCID: PMC9382635 DOI: 10.1021/acsabm.2c00023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
![]()
Origami folding is
an easy, cost-effective, and scalable fabrication
method for changing a flat material into a complex 3D functional shape.
Here, we created semicrystalline silk films doped with iron oxide
particles by mold casting and annealing. The flat silk films could
be loaded with natural dyes and folded into 3D geometries using origami
principles following plasticization. They performed locomotion under
a magnetic field, were reusable, and displayed colorimetric stability.
The critical parameters for the design of the semi-autonomous silk
film, including ease of folding, shape preservation, and locomotion
in the presence of a magnetic field, were characterized, and pH detection
was achieved by eye and by digital image colorimetry with a response
time below 1 min. We demonstrate a practical application—a
battery-free origami silk boat—as a colorimetric sensor for
waterborne pollutants, which was reusable at least five times. This
work introduces silk eco-sensors and merges responsive actuation and
origami techniques.
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Affiliation(s)
- Saphia A. L. Matthew
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, GlasgowG4 0RE, U.K
| | - Gemma Egan
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, GlasgowG4 0RE, U.K
| | - Kimia Witte
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, GlasgowG4 0RE, U.K
| | - Jirada Kaewchuchuen
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, GlasgowG4 0RE, U.K
| | - Suttinee Phuagkhaopong
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, GlasgowG4 0RE, U.K
| | - John D. Totten
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, GlasgowG4 0RE, U.K
| | - F. Philipp Seib
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, GlasgowG4 0RE, U.K
- EPSRC Future Manufacturing Research Hub for Continuous Manufacturing and Advanced Crystallisation (CMAC), University of Strathclyde, Technology and Innovation Centre, 99 George Street, GlasgowG1 1RD, U.K
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11
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Lang G, Grill C, Scheibel T. Site-Specific Functionalization of Recombinant Spider Silk Janus Fibers. Angew Chem Int Ed Engl 2022; 61:e202115232. [PMID: 34986278 PMCID: PMC9303884 DOI: 10.1002/anie.202115232] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Indexed: 12/19/2022]
Abstract
Biotechnological production is a powerful tool to design materials with customized properties. The aim of this work was to apply designed spider silk proteins to produce Janus fibers with two different functional sides. First, functionalization was established through a cysteine‐modified silk protein, ntagCyseADF4(κ16). After fiber spinning, gold nanoparticles (AuNPs) were coupled via thiol‐ene click chemistry. Significantly reduced electrical resistivity indicated sufficient loading density of AuNPs on such fiber surfaces. Then, Janus fibers were electrospun in a side‐by‐side arrangement, with “non‐functional” eADF4(C16) on the one and “functional” ntagCyseADF4(κ16) on the other side. Post‐treatment was established to render silk fibers insoluble in water. Subsequent AuNP binding was highly selective on the ntagCyseADF4(κ16) side demonstrating the potential of such silk‐based systems to realize complex bifunctional structures with spatial resolutions in the nano scale.
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Affiliation(s)
- Gregor Lang
- Biopolymer Processing Group, University of Bayreuth, Ludwig-Thoma-Straße 36A, 95447, Bayreuth, Germany
| | - Carolin Grill
- Chair of Biomaterials, University of Bayreuth, TAO Gebäude, Prof.-Rüdiger-Bormann-Str. 1, 95447, Bayreuth, Germany
| | - Thomas Scheibel
- Chair of Biomaterials, University of Bayreuth, TAO Gebäude, Prof.-Rüdiger-Bormann-Str. 1, 95447, Bayreuth, Germany
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12
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Lang G, Grill C, Scheibel T. Site‐specific functionalization of recombinant spider silk Janus fibers. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gregor Lang
- Universität Bayreuth: Universitat Bayreuth Biopolymerprocessing GERMANY
| | - Carolin Grill
- Universität Bayreuth: Universitat Bayreuth Biomaterials GERMANY
| | - Thomas Scheibel
- University of Bayreuth Biomaterials Prof. Rüdiger Bormann Str. 1 95447 Bayreuth GERMANY
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13
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Bakhshandeh B, Nateghi SS, Gazani MM, Dehghani Z, Mohammadzadeh F. A review on advances in the applications of spider silk in biomedical issues. Int J Biol Macromol 2021; 192:258-271. [PMID: 34627845 DOI: 10.1016/j.ijbiomac.2021.09.201] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/25/2021] [Accepted: 09/29/2021] [Indexed: 01/09/2023]
Abstract
Spider silk, as one of the hardest natural and biocompatible substances with extraordinary strength and flexibility, have become an ideal option in various areas of science and have made their path onto the biomedical industry. Despite its growing popularity, the difficulties in the extraction of silks from spiders and farming them have made it unaffordable and almost impossible for industrial scale. Biotechnology helped production of spider silks recombinantly in different hosts and obtaining diverse morphologies out of them based on different processing and assembly procedures. Herein, the characteristics of these morphologies and their advantages and disadvantages are summarized. A detailed view about applications of recombinant silks in skin regeneration and cartilage, tendon, bone, teeth, cardiovascular, and neural tissues engineering are brought out, where there is a need for strong scaffolds to support cell growth. Likewise, spider silk proteins have applications as conduit constructs, medical sutures, and 3D printer bioinks. Other characteristics of spider silks, such as low immunogenicity, hydrophobicity, homogeneity, and adjustability, have attracted much attention in drug and gene delivery. Finally, the challenges and obstacles ahead for industrializing the production of spider silk proteins in sufficient quantities in biomedicine, along with solutions to overcome these barriers, are discussed.
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Affiliation(s)
- Behnaz Bakhshandeh
- Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran.
| | - Seyedeh Saba Nateghi
- Department of Microbiology, Faculty of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Mohammad Maddah Gazani
- Department of Microbiology, Faculty of Biology, College of Science, University of Tehran, Tehran, Iran; Department of Cellular and Molecular Biology, Faculty of Biology, College of Science, Tehran University, Tehran, Iran
| | - Zahra Dehghani
- Department of Cellular and Molecular Biology, Faculty of Biology, College of Science, Tehran University, Tehran, Iran
| | - Fatemeh Mohammadzadeh
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
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14
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Agostinacchio F, Maniglio D, Callone E, Migliaresi C, Dirè S, Motta A. A novel and selective silk fibroin fragmentation method. SOFT MATTER 2021; 17:6863-6872. [PMID: 34227640 DOI: 10.1039/d1sm00566a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In the tissue-engineering field silk fibroin can be tailored to the target applications by modifying its secondary structure and molecular weight, and functionalizing the molecule with specific active groups linked to the amino acid side chains. To better tune the silk fibroin molecular weight and structural properties, we propose the creation of a lower molecular weight fibroin-derived material through a selective and tunable enzymatic attack on the fibroin chain. Cleavage at specific amino acid sites leads to precise silk fibroin fragmentation and, thus, lower molecular weight materials whose length and properties can be tuned with the enzyme concentration. The cleavage increased the presence of free amino groups, hence reactivity, and aqueous solutions of the resulting polymer remained stable for up to seven days. Films of fragmented fibroin were prepared and characterized, demonstrating that the fragmentation did not affect β-sheet formation after methanol treatment, but differences were detected after the water-vapor annealing process, confirmed by structural and thermal analyses. The adopted fragmentation method is fast, controllable and precise, allowing the creation of a silk-derived material class that is stable in water, with a tunable molecular weight and secondary structure rearrangements, and is thus a versatile tool for the further tunability and modulation of bioengineered constructs.
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Affiliation(s)
- Francesca Agostinacchio
- Department of Industrial Engineering, University of Trento, via Sommarive 9, Trento, Italy. and BIOTech Research Center, European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Trento, via delle Regole 101, Trento, Italy
| | - Devid Maniglio
- Department of Industrial Engineering, University of Trento, via Sommarive 9, Trento, Italy. and BIOTech Research Center, European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Trento, via delle Regole 101, Trento, Italy
| | - Emanuela Callone
- Department of Industrial Engineering, University of Trento, via Sommarive 9, Trento, Italy. and Department of Industrial Engineering, "Klaus Müller" Magnetic Resonance Laboratory, University of Trento, Via Sommarive 9, 38123 Trento, Italy
| | - Claudio Migliaresi
- Department of Industrial Engineering, University of Trento, via Sommarive 9, Trento, Italy. and BIOTech Research Center, European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Trento, via delle Regole 101, Trento, Italy
| | - Sandra Dirè
- Department of Industrial Engineering, University of Trento, via Sommarive 9, Trento, Italy. and Department of Industrial Engineering, "Klaus Müller" Magnetic Resonance Laboratory, University of Trento, Via Sommarive 9, 38123 Trento, Italy
| | - Antonella Motta
- Department of Industrial Engineering, University of Trento, via Sommarive 9, Trento, Italy. and BIOTech Research Center, European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Trento, via delle Regole 101, Trento, Italy
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15
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Whittall DR, Baker KV, Breitling R, Takano E. Host Systems for the Production of Recombinant Spider Silk. Trends Biotechnol 2021; 39:560-573. [PMID: 33051051 DOI: 10.1016/j.tibtech.2020.09.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/16/2020] [Accepted: 09/17/2020] [Indexed: 11/18/2022]
Abstract
Spider silk is renowned for its impressive mechanical properties. It is one of the strongest known biomaterials, possessing mechanical properties that outmatch both steel and Kevlar. However, the farming of spiders for their silk is unfeasible. Consequently, production of recombinant spider silk proteins (spidroins) in more amenable hosts is an exciting field of research. For large-scale production to be viable, a heterologous silk production system that is both highly efficient and cost effective is essential. Genes encoding recombinant spidroin have been expressed in bacterial, yeast, insect, and mammalian cells, in addition to many other platforms. This review discusses the recent advances in exploiting an increasingly diverse range of host platforms in the heterologous production of recombinant spidroins.
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Affiliation(s)
- Dominic R Whittall
- Manchester Institute of Biotechnology, Manchester Synthetic Biology Research Centre SYNBIOCHEM, Department of Chemistry, The University of Manchester, Manchester, M1 7DN, UK
| | - Katherine V Baker
- Manchester Institute of Biotechnology, Manchester Synthetic Biology Research Centre SYNBIOCHEM, Department of Chemistry, The University of Manchester, Manchester, M1 7DN, UK
| | - Rainer Breitling
- Manchester Institute of Biotechnology, Manchester Synthetic Biology Research Centre SYNBIOCHEM, Department of Chemistry, The University of Manchester, Manchester, M1 7DN, UK
| | - Eriko Takano
- Manchester Institute of Biotechnology, Manchester Synthetic Biology Research Centre SYNBIOCHEM, Department of Chemistry, The University of Manchester, Manchester, M1 7DN, UK.
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16
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Tully M, Wedepohl S, Kutifa D, Weise C, Licha K, Schirner M, Haag R. Prolonged activity of exenatide: Detailed comparison of Site-specific linear polyglycerol- and poly(ethylene glycol)-conjugates. Eur J Pharm Biopharm 2021; 164:105-113. [PMID: 33957224 DOI: 10.1016/j.ejpb.2021.04.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/15/2021] [Accepted: 04/26/2021] [Indexed: 12/23/2022]
Abstract
Exenatide is a small therapeutic peptide being currently used in clinic for the treatment of diabetes mellitus type II, however, displaying a short blood circulation time which makes two daily injections necessary. Covalent polymer modification of a protein is a well-known approach to overcome this limitation, resulting in steric shielding, an increased size and therefore a longer circulation half-life. In this study, we employed site-selective C-terminal polymer ligation of exenatide via copper-catalyzed azide-alkyne-cycloaddition (CuAAC) to yield 1:1-conjugates of either poly(ethylene glycol) (PEG) or linear polyglycerol (LPG) of different molecular weights. Our goal was to compare the impact of the two polymers on size, structure and activity of exenatide on the in vitro and in vivo level. Both polymers did not alter the secondary structure of exenatide and expectedly increased its hydrodynamic size, where the LPG-versions of exenatide showed slightly smaller values than their PEG-analogs of same molecular weight. Upon conjugation, GLP-1 receptor activation was diminished, however, still enabled maximum receptor response at slightly higher concentrations. Exenatide modified with a 40 kDa LPG (Ex-40-LPG) showed significant reduction of the blood glucose level in diabetic mice for up to 72 h, which was comparable to its PEG-analog, but 9-fold longer than native exenatide (8 h).
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Affiliation(s)
- Michael Tully
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustr. 3, 14195 Berlin, Germany
| | - Stefanie Wedepohl
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustr. 3, 14195 Berlin, Germany
| | - Daniel Kutifa
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustr. 3, 14195 Berlin, Germany
| | - Christoph Weise
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustr. 3, 14195 Berlin, Germany
| | - Kai Licha
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustr. 3, 14195 Berlin, Germany
| | - Michael Schirner
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustr. 3, 14195 Berlin, Germany
| | - Rainer Haag
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Takustr. 3, 14195 Berlin, Germany.
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17
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Cell membrane-biomimetic coating via click-mediated liposome fusion for mitigating the foreign-body reaction. Biomaterials 2021; 271:120768. [PMID: 33812321 DOI: 10.1016/j.biomaterials.2021.120768] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 03/02/2021] [Accepted: 03/15/2021] [Indexed: 12/19/2022]
Abstract
The foreign-body reaction (FBR) caused by the implantation of synthetic polymer scaffolds seriously affects tissue-biomaterial integration and tissue repair. To address this issue, we developed a cell membrane-biomimetic coating formed by "click"-mediated liposome immobilization and fusion on the surface of electrospun fibers to mitigate the FBR. Utilization of electrospun polystyrene microfibrous scaffold as a model matrix, we deposited azide-incorporated silk fibroin on the surface of the fibers by the layer-by-layer assembly, finally, covalently modified with clickable liposomes via copper-free SPAAC click reaction. Compared with physical adsorption, liposomes click covalently binding can quickly fuse to form lipid film and maintain fluidity, which also improved liposome stability in vitro and in vivo. Molecular dynamics simulation proved that "click" improves the binding rate and strength of liposome to silk substrate. Importantly, histological observation and in vivo fluorescent probes imaging showed that liposome-functionalized electrospun fibers had negligible characteristics of the FBR and were accompanied by many infiltrated host cells and new blood vessels. We believe that the promotion of macrophage polarization toward a pro-regenerative phenotype plays an important role in vascularization. This bioinspired strategy paves the way for utilizing cell membrane biomimetic coating to resist the FBR and promote tissue-scaffold integration.
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18
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Song Y, Li L, Zhao W, Qian Y, Dong L, Fang Y, Yang L, Fan Y. Surface modification of electrospun fibers with mechano-growth factor for mitigating the foreign-body reaction. Bioact Mater 2021; 6:2983-2998. [PMID: 33732968 PMCID: PMC7930508 DOI: 10.1016/j.bioactmat.2021.02.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/31/2021] [Accepted: 02/16/2021] [Indexed: 12/24/2022] Open
Abstract
The implantation of synthetic polymeric scaffolds induced foreign-body reaction (FBR) seriously influence the wound healing and impair functionality recovery. A novel short peptide, mechano-growth factor (MGF), was introduced in this study to modify an electrospun polycaprolactone (PCL) fibrous scaffold to direct the macrophage phenotype transition and mitigate the FBR. In vitro studies discovered the cell signal transduction mechanism of MGF regulates the macrophage polarization via the expression of related genes and proteins. We found that macrophages response the MGF stimuli via endocytosis, then MGF promotes the histone acetylation and upregulates the STAT6 expression to direct an anti-inflammatory phenotype transition. Subsequently, an immunoregulatory electrospun PCL fibrous scaffold was modified by silk fibroin (SF) single-component layer-by-layer assembly, and the SF was decorated with MGF via click chemistry. Macrophages seeded on scaffold to identify the function of MGF modified scaffold in directing macrophage polarization in vitro. Parallelly, rat subcutaneous implantation model and rat tendon adhesion model were performed to detect the immunomodulatory ability of the MGF-modified scaffold in vivo. The results demonstrate that MGF-modified scaffold is beneficial to the transformation of macrophages to M2 phenotype in vitro. More importantly, MGF-functionalized scaffold can inhibit the FBR at the subcutaneous tissue and prevent tissue adhesion.
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Affiliation(s)
- Yang Song
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, PR China.,Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing, 400030, PR China.,Department of Bioengineering, University of California, Los Angeles, CA, 90095, USA
| | - Linhao Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, PR China
| | - Weikang Zhao
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Yuna Qian
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, PR China
| | - Lili Dong
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing, 400030, PR China
| | - Yunnan Fang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, PR China
| | - Li Yang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, PR China.,Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing, 400030, PR China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, PR China
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19
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Santi S, Mancini I, Dirè S, Callone E, Speranza G, Pugno N, Migliaresi C, Motta A. A Bio-inspired Multifunctionalized Silk Fibroin. ACS Biomater Sci Eng 2021; 7:507-516. [PMID: 33476122 DOI: 10.1021/acsbiomaterials.0c01567] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A bio-inspired multifunctionalized silk fibroin (BMS) was synthesized in order to mimic the interaction of nidogen with the type IV collagen and laminin of basement membranes. The designed BMS consists of a motif of laminin α-chain-derived, called IK peptide, and type IV collagen covalently bound to the silk fibroin (SF) by using EDC/NHS coupling and a Cu-free click chemistry reaction, respectively. Silk fibroin was chosen as the main component of the BMS because it is versatile and biocompatible, induces an in vivo favorable bioresponse, and moreover can be functionalized with different methods. The chemical structure of BMS was analyzed by using X-ray photoelectron spectroscopy, attenuated total reflection-Fourier transform infrared, cross-polarization magic angle spinning nuclear magnetic resonance techniques, and colorimetric assay. The SF and BMS solutions were cross-linked by sonication to form hydrogels or casted to make films in order to evaluate and compare the early adhesion and viability of MRC5 cells. BMS hydrogels were also characterized by rheological and thermal analyses.
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Affiliation(s)
- Sofia Santi
- Department of Industrial Engineering, University of Trento, via Sommarive 9, 38123 Trento, Italy.,BIOTech Research Center, University of Trento, via delle Regole 101, 38123 Trento, Italy
| | - Ines Mancini
- Laboratory of Bioorganic Chemistry, Department of Physics, University of Trento, via Sommarive 14, 38123 Trento, Italy
| | - Sandra Dirè
- Department of Industrial Engineering, University of Trento, via Sommarive 9, 38123 Trento, Italy.,"Klaus Mueller" Magnetic Resonance Laboratory, Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy
| | - Emanuela Callone
- Department of Industrial Engineering, University of Trento, via Sommarive 9, 38123 Trento, Italy.,"Klaus Mueller" Magnetic Resonance Laboratory, Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy
| | - Giorgio Speranza
- Department of Industrial Engineering, University of Trento, via Sommarive 9, 38123 Trento, Italy.,FBK-irst, Via Sommarive 18, Povo, 38123 Trento, Italy.,IFN - CNR, CSMFO Lab. & FBK CMM, via alla Cascata, 56/C Povo, 38123 Trento, Italy
| | - Nicola Pugno
- Laboratory of Bio-Inspired, Bionic, Nano, Meta Materials & Mechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, 38123 Trento, Italy.,School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, E1-4NS London, United Kingdom
| | - Claudio Migliaresi
- Department of Industrial Engineering, University of Trento, via Sommarive 9, 38123 Trento, Italy.,BIOTech Research Center, University of Trento, via delle Regole 101, 38123 Trento, Italy
| | - Antonella Motta
- Department of Industrial Engineering, University of Trento, via Sommarive 9, 38123 Trento, Italy.,BIOTech Research Center, University of Trento, via delle Regole 101, 38123 Trento, Italy
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20
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Sogawa H, Korawit T, Masunaga H, Numata K. Silk/Natural Rubber (NR) and 3,4-Dihydroxyphenylalanine (DOPA)-Modified Silk/NR Composites: Synthesis, Secondary Structure, and Mechanical Properties. Molecules 2020; 25:E235. [PMID: 31935972 PMCID: PMC6982767 DOI: 10.3390/molecules25010235] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 12/26/2019] [Accepted: 01/02/2020] [Indexed: 11/16/2022] Open
Abstract
Silk composites with natural rubber (NR) were prepared by mixing degummed silk and NR latex solutions. A significant enhancement of the mechanical properties was confirmed for silk/NR composites compared to a NR-only product, indicating that silk can be applied as an effective reinforcement for rubber materials. Attenuated total reflection Fourier transform infrared (ATR-FTIR) and wide-angle X-ray diffraction (WAXD) analysis revealed that a β-sheet structure was formed in the NR matrix by increasing the silk content above 20 wt%. Then, 3,4-dihydroxyphenylalanine (DOPA)-modified silk was also blended with NR to give a DOPA-silk/NR composite, which showed superior mechanical properties to those of the unmodified silk-based composite. Not only the chemical structure but also the dominant secondary structure of silk in the composite was changed after DOPA modification. It was concluded that both the efficient adhesion property of DOPA residue and the secondary structure change improved the compatibility of silk and NR, resulting in the enhanced mechanical properties of the formed composite. The knowledge obtained herein should contribute to the development of the fabrication of novel silk-based elastic materials.
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Affiliation(s)
- Hiromitsu Sogawa
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, 2-1, Saitama, Wako 351-0198, Japan; (H.S.); (T.K.)
| | - Treratanakulwongs Korawit
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, 2-1, Saitama, Wako 351-0198, Japan; (H.S.); (T.K.)
| | - Hiroyasu Masunaga
- Materials Structure Group I, Research & Utilization Division, Japan Synchrotron Radiation Research Institute, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan;
| | - Keiji Numata
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, 2-1, Saitama, Wako 351-0198, Japan; (H.S.); (T.K.)
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21
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Lühmann T, Gutmann M, Moscaroli A, Raschig M, Béhé M, Meinel L. Biodistribution of Site-Specific PEGylated Fibroblast Growth Factor-2. ACS Biomater Sci Eng 2019; 6:425-432. [PMID: 33463203 DOI: 10.1021/acsbiomaterials.9b01248] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Fibroblast growth factor 2 (FGF-2) is a small 18 kDa protein with clinical potential for ischemic heart disease, wound healing, and spinal cord injury. However, the therapeutic potential of systemic FGF-2 administration is challenged by its fast elimination. Therefore, we deployed genetic codon expansion to integrate an azide functionality to the FGF-2 N-terminus, which was site-directly decorated with poly(ethylene glycol) (PEG) through bioorthogonal strain-promoted azide-alkyne cycloaddition (SPAAC). PEGylated FGF-2 was as bioactive as wild-type FGF-2 as demonstrated by cell proliferation and Erk phosphorylation of fibroblasts. The PEGylated FGF-2 conjugate was radiolabeled with [111In] Indium cation ([111In]In3+) to study its biodistribution through noninvasive imaging by single-photon emission computed tomography (SPECT) and by quantitative activity analysis of the respective organs in healthy mice. This study details the biodistribution pattern of site-specific PEGylated FGF-2 in tissues after intravenous (iv) administration compared to the unconjugated protein. Low accumulation of the PEGylated FGF-2 variant in the kidney and the liver was demonstrated, whereas specific uptake of PEGylated FGF-2 into the retina was significantly diminished. In conclusion, site-specific PEGylation of FGF-2 by SPAAC resulted in a superior outcome for the synthesis yield and in conjugates with excellent biological performances with a gain of half-life but reduced tissue access in vivo.
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Affiliation(s)
- Tessa Lühmann
- Institute for Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Marcus Gutmann
- Institute for Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Alessandra Moscaroli
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - Martina Raschig
- Institute for Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Martin Béhé
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - Lorenz Meinel
- Institute for Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
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22
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Kuang D, Jiang F, Wu F, Kaur K, Ghosh S, Kundu SC, Lu S. Highly elastomeric photocurable silk hydrogels. Int J Biol Macromol 2019; 134:838-845. [PMID: 31103592 DOI: 10.1016/j.ijbiomac.2019.05.068] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 05/10/2019] [Accepted: 05/10/2019] [Indexed: 11/26/2022]
Abstract
A photocurable silk fibroin hydrogel is prepared, for the first time, using natural silk protein fibroin and biophotosensitizer riboflavin. Riboflavin is excited by ultraviolet light to generate a triplet state which is transferred to produce active oxygen radicals with singlet oxygen as the main component. Active oxygen radicals can induce chemical cross-linking of amino-, phenol- and other groups in the silk fibroin macromolecules to form a photocurable hydrogel. The different biophysical characterizations of the gelation of this modified fibroin protein solution were studied by using Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, microplate reader and texture analyzer. The aggregate structures, surface morphologies, mechanical properties, light transmission and degradation properties of the gel were studied. The investigations showed that the silk fibroin/riboflavin hydrogels predominantly have random coils or alpha helix structures. These gels show resilience up to 90% after 80% compression and a light transmission of up to 97%. The cell culture experiment exhibits that the hydrogel has a satisfactory cytocompatibility.
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Affiliation(s)
- Dajiang Kuang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, People's Republic of China
| | - Fujian Jiang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, People's Republic of China
| | - Feng Wu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, People's Republic of China
| | - Kulwinder Kaur
- Regenerative Engineering Laboratory, Department of Textile Technology, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Sourabh Ghosh
- Regenerative Engineering Laboratory, Department of Textile Technology, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Subhas C Kundu
- 3Bs Research Group, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark - 4805-017 Barco, Guimaraes, Portugal
| | - Shenzhou Lu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, People's Republic of China.
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23
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Hang Y, Ma J, Li S, Zhang X, Liu B, Ding Z, Lu Q, Chen H, Kaplan DL. Structure–Chemical Modification Relationships with Silk Materials. ACS Biomater Sci Eng 2019; 5:2762-2768. [DOI: 10.1021/acsbiomaterials.9b00369] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yingjie Hang
- College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| | - Jie Ma
- Department of Burns, Gansu Provincial Hospital, Lanzhou 730000, People’s Republic of China
| | - Siyuan Li
- College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| | - Xiaoyi Zhang
- National Engineering Laboratory for Modern Silk, Soochow University, Suzhou 215123, People’s Republic of China
| | - Bing Liu
- College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| | - Zhaozhao Ding
- National Engineering Laboratory for Modern Silk, Soochow University, Suzhou 215123, People’s Republic of China
| | - Qiang Lu
- College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
- National Engineering Laboratory for Modern Silk, Soochow University, Suzhou 215123, People’s Republic of China
| | - Hong Chen
- College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
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24
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Qian Y, Li L, Song Y, Dong L, Chen P, Li X, Cai K, Germershaus O, Yang L, Fan Y. Surface modification of nanofibrous matrices via layer-by-layer functionalized silk assembly for mitigating the foreign body reaction. Biomaterials 2018; 164:22-37. [DOI: 10.1016/j.biomaterials.2018.02.038] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 02/13/2018] [Accepted: 02/19/2018] [Indexed: 12/30/2022]
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25
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Kuang D, Wu F, Yin Z, Zhu T, Xing T, Kundu SC, Lu S. Silk Fibroin/Polyvinyl Pyrrolidone Interpenetrating Polymer Network Hydrogels. Polymers (Basel) 2018; 10:E153. [PMID: 30966189 PMCID: PMC6414898 DOI: 10.3390/polym10020153] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 02/02/2018] [Accepted: 02/04/2018] [Indexed: 01/02/2023] Open
Abstract
Silk fibroin hydrogel is an ideal model as biomaterial matrix due to its excellent biocompatibility and used in the field of medical polymer materials. Nevertheless, native fibroin hydrogels show poor transparency and resilience. To settle these drawbacks, an interpenetrating network (IPN) of hydrogels are synthesized with changing ratios of silk fibroin/N-Vinyl-2-pyrrolidonemixtures that crosslink by H₂O₂ and horseradish peroxidase. Interpenetrating polymer network structure can shorten the gel time and the pure fibroin solution gel time for more than a week. This is mainly due to conformation from the random coil to the β-sheet structure changes of fibroin. Moreover, the light transmittance of IPN hydrogel can be as high as more than 97% and maintain a level of 90% within a week. The hydrogel, which mainly consists of random coil, the apertures inside can be up to 200 μm. Elastic modulus increases during the process of gelation. The gel has nearly 95% resilience under the compression of 70% eventually, which is much higher than native fibroin gel. The results suggest that the present IPN hydrogels have excellent mechanical properties and excellent transparency.
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Affiliation(s)
- Dajiang Kuang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China.
| | - Feng Wu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China.
| | - Zhuping Yin
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China.
| | - Tian Zhu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China.
| | - Tieling Xing
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China.
| | - Subhas C Kundu
- 3Bs Research Group, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Barco, 4805-017 Guimaraes, Portugal.
| | - Shenzhou Lu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China.
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26
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Braun AC, Gutmann M, Lühmann T, Meinel L. Bioorthogonal strategies for site-directed decoration of biomaterials with therapeutic proteins. J Control Release 2018; 273:68-85. [PMID: 29360478 DOI: 10.1016/j.jconrel.2018.01.018] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 01/16/2018] [Accepted: 01/17/2018] [Indexed: 01/04/2023]
Abstract
Emerging strategies targeting site-specific protein modifications allow for unprecedented selectivity, fast kinetics and mild reaction conditions with high yield. These advances open exciting novel possibilities for the effective bioorthogonal decoration of biomaterials with therapeutic proteins. Site-specificity is particularly important to the therapeutics' end and translated by targeting specific functional groups or introducing new functional groups into the therapeutic at predefined positions. Biomimetic strategies are designed for modification of therapeutics emulating enzymatic strategies found in Nature. These strategies are suitable for a diverse range of applications - not only for protein-polymer conjugation, particle decoration and surface immobilization, but also for the decoration of complex biomaterials and the synthesis of bioresponsive drug delivery systems. This article reviews latest chemical and enzymatic strategies for the biorthogonal decoration of biomaterials with therapeutic proteins and inter-positioned linker structures. Finally, the numerous reports at the interface of biomaterials, linkers, and therapeutic protein decoration are integrated into practical advice for design considerations intended to support the selection of productive ligation strategies.
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Affiliation(s)
- Alexandra C Braun
- Institute for Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, DE-97074 Würzburg, Germany
| | - Marcus Gutmann
- Institute for Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, DE-97074 Würzburg, Germany
| | - Tessa Lühmann
- Institute for Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, DE-97074 Würzburg, Germany
| | - Lorenz Meinel
- Institute for Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, DE-97074 Würzburg, Germany.
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27
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Raynal L, Allardyce BJ, Wang X, Dilley RJ, Rajkhowa R, Henderson LC. Facile and versatile solid state surface modification of silk fibroin membranes using click chemistry. J Mater Chem B 2018; 6:8037-8042. [PMID: 32254922 DOI: 10.1039/c8tb02508h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reported is a fast and versatile protocol to surface modify pre-cast silk membranes targeting tyrosine residues.
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Affiliation(s)
- Laetitia Raynal
- Deakin University
- Institute for Frontier Materials
- Waurn Ponds Campus
- Geelong
- Australia
| | | | - Xungai Wang
- Deakin University
- Institute for Frontier Materials
- Waurn Ponds Campus
- Geelong
- Australia
| | | | - Rangam Rajkhowa
- Deakin University
- Institute for Frontier Materials
- Waurn Ponds Campus
- Geelong
- Australia
| | - Luke C. Henderson
- Deakin University
- Institute for Frontier Materials
- Waurn Ponds Campus
- Geelong
- Australia
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28
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Wu G, Song P, Zhang D, Liu Z, Li L, Huang H, Zhao H, Wang N, Zhu Y. Robust composite silk fibers pulled out of silkworms directly fed with nanoparticles. Int J Biol Macromol 2017. [PMID: 28625835 DOI: 10.1016/j.ijbiomac.2017.06.069] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
This paper reports the impacts of direct feeding silkworms with different nanoparticles (Cu, Fe, and TiO2) on the morphology, structures, and mechanical properties of the resulting silk fiber (SF). The contents of the Cu nanoparticles were 38 times higher in the posterior silk glands and only 2-3 times higher in the SF and in the middle silk glands compared with the controlled groups. Significant changes of the surface morphology, structures, and diameter of the Cu nanoparticle fed SF have been observed, which are attributed to a slight SF protein reconstruction or conformational change in the mixture of silk fibroin and sericin in the silk glands. The resulting Cu-containing SF exhibits good tensile strength of 360MPa and reaches a strain of 38%, which are 89% and 36% higher than those of the natural SF. This study offers a new green strategy for the easy modification to achieve robust composite SF.
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Affiliation(s)
- GuoHua Wu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212018, PR China; College of Biotechnology and Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, 212018, PR China.
| | - Peng Song
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212018, PR China
| | - DongYang Zhang
- College of Biotechnology and Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, 212018, PR China
| | - ZeYu Liu
- College of Biotechnology and Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, 212018, PR China
| | - Long Li
- College of Biotechnology and Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, 212018, PR China
| | - HuiMing Huang
- Institute of Biomechanics and Medical Engineering, Tsinghua University, Beijing 100084, PR China
| | - HongPing Zhao
- Institute of Biomechanics and Medical Engineering, Tsinghua University, Beijing 100084, PR China.
| | - NanNan Wang
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
| | - YanQiu Zhu
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK.
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29
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Chen D, Yin Z, Wu F, Fu H, Kundu SC, Lu S. Orientational behaviors of silk fibroin hydrogels. J Appl Polym Sci 2017. [DOI: 10.1002/app.45050] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Daqi Chen
- National Engineering Laboratory for Modern Silk; College of Textile and Clothing Engineering, Soochow University; Suzhou 215123 China
| | - Zhuping Yin
- National Engineering Laboratory for Modern Silk; College of Textile and Clothing Engineering, Soochow University; Suzhou 215123 China
| | - Feng Wu
- National Engineering Laboratory for Modern Silk; College of Textile and Clothing Engineering, Soochow University; Suzhou 215123 China
| | - Hua Fu
- National Engineering Laboratory for Modern Silk; College of Textile and Clothing Engineering, Soochow University; Suzhou 215123 China
| | - Subhas C. Kundu
- Department of Biotechnology; Indian Institute of Technology Kharagpur; West Bengal 721302 India
- 3Bs Research Group; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho; AvePark 4805-017 Barco Guimaraes Portugal
| | - Shenzhou Lu
- National Engineering Laboratory for Modern Silk; College of Textile and Clothing Engineering, Soochow University; Suzhou 215123 China
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30
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Sevim S, Ozer S, Jones G, Wurzel J, Feng L, Fakhraee A, Shamsudhin N, Ergeneman O, Pellicer E, Sort J, Pané S, Nelson BJ, Torun H, Lühmann T. Nanomechanics on FGF-2 and Heparin Reveal Slip Bond Characteristics with pH Dependency. ACS Biomater Sci Eng 2017; 3:1000-1007. [DOI: 10.1021/acsbiomaterials.6b00723] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Semih Sevim
- Department
of Electrical and Electronics Engineering, Bogazici University, Bebek 34342 Istanbul, Turkey
| | - Sevil Ozer
- Department
of Electrical and Electronics Engineering, Bogazici University, Bebek 34342 Istanbul, Turkey
| | - Gabriel Jones
- Institute
of Pharmacy and Food Chemistry, University of Würzburg, Am
Hubland, 97074 Würzburg, Germany
| | - Joel Wurzel
- Institute
of Pharmacy and Food Chemistry, University of Würzburg, Am
Hubland, 97074 Würzburg, Germany
| | - Luying Feng
- Department
of Electrical and Electronics Engineering, Bogazici University, Bebek 34342 Istanbul, Turkey
| | - Arielle Fakhraee
- Aeon Scientific AG, Schlieren, Rütistrasse 12, 8952 Zurich, Switzerland
| | - Naveen Shamsudhin
- Multi
Scale Robotics Lab, Institute of Robotics and Intelligent Systems, ETH Zurich, Tannenstrasse 3, 8092 Zurich, Switzerland
| | - Olgaç Ergeneman
- Multi
Scale Robotics Lab, Institute of Robotics and Intelligent Systems, ETH Zurich, Tannenstrasse 3, 8092 Zurich, Switzerland
| | - Eva Pellicer
- Departament
de Física, Facultat de Ciències, Universitat Autònoma de Barcelona, Torre C5 par-2, 08193 Bellaterra, Spain
| | - Jordi Sort
- Departament
de Física, Facultat de Ciències, Universitat Autònoma de Barcelona, Torre C5 par-2, 08193 Bellaterra, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Ps. Lluís Companys 23, 08010 Barcelona, Spain
| | - Salvador Pané
- Multi
Scale Robotics Lab, Institute of Robotics and Intelligent Systems, ETH Zurich, Tannenstrasse 3, 8092 Zurich, Switzerland
| | - Bradley J. Nelson
- Multi
Scale Robotics Lab, Institute of Robotics and Intelligent Systems, ETH Zurich, Tannenstrasse 3, 8092 Zurich, Switzerland
| | - Hamdi Torun
- Department
of Electrical and Electronics Engineering, Bogazici University, Bebek 34342 Istanbul, Turkey
| | - Tessa Lühmann
- Institute
of Pharmacy and Food Chemistry, University of Würzburg, Am
Hubland, 97074 Würzburg, Germany
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31
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Moscaroli A, Jones G, Lühmann T, Meinel L, Wälti S, Blanc A, Fischer E, Hilbert M, Schibli R, Béhé M. Radiolabeled 111In-FGF-2 Is Suitable for In Vitro/Ex Vivo Evaluations and In Vivo Imaging. Mol Pharm 2017; 14:639-648. [PMID: 28221043 DOI: 10.1021/acs.molpharmaceut.6b00913] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Fibroblast growth factor-2 (FGF-2) is a potent modulator of cell growth and regulation, with improper FGF-2 signaling being involved in impaired responses to injury or even cancer. Therefore, the exploitation of FGF-2 as a therapeutic drives the prerequisite for effective insight into drug disposition kinetics. In this article, we present an 111In-radiolabeled FGF-2 derivative for noninvasive imaging in small animals deploying single photon emission tomography (SPECT). 111In-FGF-2 is equally well suitable for in vitro and ex vivo investigations as 125I-FGF-2. Furthermore, 111In-FGF-2 permits the performance of in vivo imaging, for example for the analysis of FGF-2 containing pharmaceutical formulations in developmental or preclinical stages. 111In-FGF-2 had affinity for the low-molecular-weight heparin enoxaparin identical to that of unlabeled FGF-2 (Kd: 0.6 ± 0.07 μM and 0.33 ± 0.03 μM, respectively) as assessed by isothermal titration calorimetry. The binding of 111In-FGF-2 to heparan sulfate proteoglycans (HPSGs) and the biological activity were comparable to those of unlabeled FGF-2, with EC50 values of 12 ± 2 pM and 25 ± 6 pM, respectively. In vivo biodistribution in healthy nude mice indicated a predominant accumulation of 111In-FGF-2 in filtering organs and minor uptake in the retina and the salivary and pituitary glands, which was confirmed by SPECT imaging. Therefore, 111In-FGF-2 is a valid tracer for future noninvasive animal imaging of FGF-2 in pharmaceutical development.
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Affiliation(s)
- Alessandra Moscaroli
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute , 5232 Villigen PSI, Switzerland
| | - Gabriel Jones
- Institute for Pharmacy and Food Chemistry, University of Wurzburg , 97074 Wurzburg, Germany
| | - Tessa Lühmann
- Institute for Pharmacy and Food Chemistry, University of Wurzburg , 97074 Wurzburg, Germany
| | - Lorenz Meinel
- Institute for Pharmacy and Food Chemistry, University of Wurzburg , 97074 Wurzburg, Germany
| | - Stephanie Wälti
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich , 8092 Zurich, Switzerland
| | - Alain Blanc
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute , 5232 Villigen PSI, Switzerland
| | - Eliane Fischer
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute , 5232 Villigen PSI, Switzerland
| | - Manuel Hilbert
- Laboratory of Biomolecular Research, Department of Biology and Chemistry, Paul Scherrer Institute , 5232 Villigen PSI, Switzerland
| | - Roger Schibli
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute , 5232 Villigen PSI, Switzerland.,Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich , 8092 Zurich, Switzerland
| | - Martin Béhé
- Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institute , 5232 Villigen PSI, Switzerland
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32
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Lühmann T, Schmidt M, Leiske MN, Spieler V, Majdanski TC, Grube M, Hartlieb M, Nischang I, Schubert S, Schubert US, Meinel L. Site-Specific POxylation of Interleukin-4. ACS Biomater Sci Eng 2017; 3:304-312. [DOI: 10.1021/acsbiomaterials.6b00578] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tessa Lühmann
- Institute
of Pharmacy and Food Chemistry, University of Würzburg, Am
Hubland, DE-97074 Würzburg, Germany
| | - Marcel Schmidt
- Institute
of Pharmacy and Food Chemistry, University of Würzburg, Am
Hubland, DE-97074 Würzburg, Germany
| | - Meike N. Leiske
- Institute of Organic and Macromolecular Chemistry [IOMC], Friedrich Schiller University Jena, Humboldtstrasse 10, DE-07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, DE-07743 Jena, Germany
| | - Valerie Spieler
- Institute
of Pharmacy and Food Chemistry, University of Würzburg, Am
Hubland, DE-97074 Würzburg, Germany
| | - Tobias C. Majdanski
- Institute of Organic and Macromolecular Chemistry [IOMC], Friedrich Schiller University Jena, Humboldtstrasse 10, DE-07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, DE-07743 Jena, Germany
| | - Mandy Grube
- Institute of Organic and Macromolecular Chemistry [IOMC], Friedrich Schiller University Jena, Humboldtstrasse 10, DE-07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, DE-07743 Jena, Germany
| | - Matthias Hartlieb
- Institute of Organic and Macromolecular Chemistry [IOMC], Friedrich Schiller University Jena, Humboldtstrasse 10, DE-07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, DE-07743 Jena, Germany
| | - Ivo Nischang
- Institute of Organic and Macromolecular Chemistry [IOMC], Friedrich Schiller University Jena, Humboldtstrasse 10, DE-07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, DE-07743 Jena, Germany
| | - Stephanie Schubert
- Jena
Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, DE-07743 Jena, Germany
- Department
of Pharmaceutical Technology, Friedrich Schiller University Jena, Otto-Schott-Strasse 41, DE-07747 Jena, Germany
| | - Ulrich S. Schubert
- Institute of Organic and Macromolecular Chemistry [IOMC], Friedrich Schiller University Jena, Humboldtstrasse 10, DE-07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, DE-07743 Jena, Germany
| | - Lorenz Meinel
- Institute
of Pharmacy and Food Chemistry, University of Würzburg, Am
Hubland, DE-97074 Würzburg, Germany
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33
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Lühmann T, Spieler V, Werner V, Ludwig MG, Fiebig J, Mueller TD, Meinel L. Interleukin-4-Clicked Surfaces Drive M2 Macrophage Polarization. Chembiochem 2016; 17:2123-2128. [DOI: 10.1002/cbic.201600480] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Indexed: 01/27/2023]
Affiliation(s)
- Tessa Lühmann
- Institute for Pharmacy and Food Chemistry; University of Würzburg; Am Hubland 97074 Würzburg Germany
| | - Valerie Spieler
- Institute for Pharmacy and Food Chemistry; University of Würzburg; Am Hubland 97074 Würzburg Germany
| | - Vera Werner
- Institute for Pharmacy and Food Chemistry; University of Würzburg; Am Hubland 97074 Würzburg Germany
| | | | - Juliane Fiebig
- Lehrstuhl für Botanik I Molekulare Pflanzenphysik und Biophysik; University of Würzburg; Julius-von-Sachs-Platz 2 97082 Würzburg Germany
| | - Thomas D. Mueller
- Lehrstuhl für Botanik I Molekulare Pflanzenphysik und Biophysik; University of Würzburg; Julius-von-Sachs-Platz 2 97082 Würzburg Germany
| | - Lorenz Meinel
- Institute for Pharmacy and Food Chemistry; University of Würzburg; Am Hubland 97074 Würzburg Germany
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34
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Wandrey G, Wurzel J, Hoffmann K, Ladner T, Büchs J, Meinel L, Lühmann T. Probing unnatural amino acid integration into enhanced green fluorescent protein by genetic code expansion with a high-throughput screening platform. J Biol Eng 2016; 10:11. [PMID: 27733867 PMCID: PMC5045631 DOI: 10.1186/s13036-016-0031-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 09/14/2016] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Genetic code expansion has developed into an elegant tool to incorporate unnatural amino acids (uAA) at predefined sites in the protein backbone in response to an amber codon. However, recombinant production and yield of uAA comprising proteins are challenged due to the additional translation machinery required for uAA incorporation. RESULTS We developed a microtiter plate-based high-throughput monitoring system (HTMS) to study and optimize uAA integration in the model protein enhanced green fluorescence protein (eGFP). Two uAA, propargyl-L-lysine (Plk) and (S)-2-amino-6-((2-azidoethoxy) carbonylamino) hexanoic acid (Alk), were incorporated at the same site into eGFP co-expressing the native PylRS/tRNAPylCUA pair originating from Methanosarcina barkeri in E. coli. The site-specific uAA functionalization was confirmed by LC-MS/MS analysis. uAA-eGFP production and biomass growth in parallelized E. coli cultivations was correlated to (i) uAA concentration and the (ii) time of uAA addition to the expression medium as well as to induction parameters including the (iii) time and (iv) amount of IPTG supplementation. The online measurements of the HTMS were consolidated by end point-detection using standard enzyme-linked immunosorbent procedures. CONCLUSION The developed HTMS is powerful tool for parallelized and rapid screening. In light of uAA integration, future applications may include parallelized screening of different PylRS/tRNAPylCUA pairs as well as further optimization of culture conditions.
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Affiliation(s)
- Georg Wandrey
- AVT, Biochemical Engineering, RWTH Aachen University, Aachen, 52074 Germany
| | - Joel Wurzel
- Institute for Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, Würzburg, 97074 Germany
| | - Kyra Hoffmann
- AVT, Biochemical Engineering, RWTH Aachen University, Aachen, 52074 Germany
| | - Tobias Ladner
- AVT, Biochemical Engineering, RWTH Aachen University, Aachen, 52074 Germany
| | - Jochen Büchs
- AVT, Biochemical Engineering, RWTH Aachen University, Aachen, 52074 Germany
| | - Lorenz Meinel
- Institute for Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, Würzburg, 97074 Germany
| | - Tessa Lühmann
- Institute for Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, Würzburg, 97074 Germany
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35
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Matrix Metalloproteinase Responsive Delivery of Myostatin Inhibitors. Pharm Res 2016; 34:58-72. [DOI: 10.1007/s11095-016-2038-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Accepted: 09/06/2016] [Indexed: 12/21/2022]
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36
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Ming J, Li M, Han Y, Chen Y, Li H, Zuo B, Pan F. Novel two-step method to form silk fibroin fibrous hydrogel. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 59:185-192. [DOI: 10.1016/j.msec.2015.10.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Revised: 09/07/2015] [Accepted: 10/05/2015] [Indexed: 10/22/2022]
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37
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Teramoto H, Nakajima KI, Kojima K. Azide-Incorporated Clickable Silk Fibroin Materials with the Ability to Photopattern. ACS Biomater Sci Eng 2016; 2:251-258. [DOI: 10.1021/acsbiomaterials.5b00469] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Hidetoshi Teramoto
- Genetically Modified Organism
Research Center, National Institute of Agrobiological Sciences (NIAS), 1-2
Ohwashi, Tsukuba, Ibaraki 305-8634, Japan
| | - Ken-ichi Nakajima
- Genetically Modified Organism
Research Center, National Institute of Agrobiological Sciences (NIAS), 1-2
Ohwashi, Tsukuba, Ibaraki 305-8634, Japan
| | - Katsura Kojima
- Genetically Modified Organism
Research Center, National Institute of Agrobiological Sciences (NIAS), 1-2
Ohwashi, Tsukuba, Ibaraki 305-8634, Japan
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38
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Zhang F, Guang S, Ke F, Li J, Xu H. Facile preparation and properties of multifunctional polyacetylene via highly efficient click chemistry. RSC Adv 2016. [DOI: 10.1039/c5ra21049f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of novel multifunctional polyacetylenes bearing oxadiazole and azo groups as molecular pendants were designed and synthesizedviahighly effective click chemistry.
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Affiliation(s)
- Fayin Zhang
- The State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Materials Science and Engineering
- Donghua University
- Shanghai 201620
- China
| | - Shanyi Guang
- College of Chemistry and Bioengineering
- Donghua University
- Shanghai 201620
- China
| | - Fuyou Ke
- The State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Materials Science and Engineering
- Donghua University
- Shanghai 201620
- China
| | - Jing Li
- The State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Materials Science and Engineering
- Donghua University
- Shanghai 201620
- China
| | - Hongyao Xu
- The State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Materials Science and Engineering
- Donghua University
- Shanghai 201620
- China
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39
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Li AB, Kluge JA, Guziewicz NA, Omenetto FG, Kaplan DL. Silk-based stabilization of biomacromolecules. J Control Release 2015; 219:416-430. [PMID: 26403801 PMCID: PMC4656123 DOI: 10.1016/j.jconrel.2015.09.037] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 09/19/2015] [Indexed: 11/26/2022]
Abstract
Silk fibroin is a high molecular weight amphiphilic protein that self-assembles into robust biomaterials with remarkable properties including stabilization of biologicals and tunable release kinetics correlated to processing conditions. Cells, antibiotics,monoclonal antibodies and peptides, among other biologics, have been encapsulated in silk using various processing approaches and material formats. The mechanistic basis for the entrapment and stabilization features, along with insights into the modulation of release of the entrained compounds from silks will be reviewed with a focus on stabilization of bioactive molecules.
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Affiliation(s)
- Adrian B Li
- Department of Chemical and Biological Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Jonathan A Kluge
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Nicholas A Guziewicz
- Drug Product Technologies, Amgen, 1 Amgen Center Drive, Thousand Oaks, CA 91320, USA
| | - Fiorenzo G Omenetto
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - David L Kaplan
- Department of Chemical and Biological Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA; Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA.
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40
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Lühmann T, Jones G, Gutmann M, Rybak JC, Nickel J, Rubini M, Meinel L. Bio-orthogonal Immobilization of Fibroblast Growth Factor 2 for Spatial Controlled Cell Proliferation. ACS Biomater Sci Eng 2015; 1:740-746. [DOI: 10.1021/acsbiomaterials.5b00236] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tessa Lühmann
- Institute
of Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, 97074 Wuerzburg, Germany
| | - Gabriel Jones
- Institute
of Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, 97074 Wuerzburg, Germany
| | - Marcus Gutmann
- Institute
of Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, 97074 Wuerzburg, Germany
| | - Jens-Christoph Rybak
- Institute
of Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, 97074 Wuerzburg, Germany
| | - Joachim Nickel
- Chair
of Tissue Engineering and Regenerative Medicine, University Hospital of Wuerzburg, Roentgenring 11, 97070 Wuerzburg Germany
- Translational
Center “Regenerative Therapies in Oncology and Musculoskeletal
Diseases” Wuerzburg, Branch of the Fraunhofer Institute Interfacial Engineering and Biotechnology (IGB), Wuerzburg, Germany
| | - Marina Rubini
- Institute
of Organic Chemistry, University of Konstanz, Konstanz, Germany
| | - Lorenz Meinel
- Institute
of Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, 97074 Wuerzburg, Germany
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41
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Schultz I, Vollmers F, Lühmann T, Rybak JC, Wittmann R, Stank K, Steckel H, Kardziev B, Schmidt M, Högger P, Meinel L. Pulmonary Insulin-like Growth Factor I Delivery from Trehalose and Silk-Fibroin Microparticles. ACS Biomater Sci Eng 2015. [DOI: 10.1021/ab500101c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Isabel Schultz
- Institute
for Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, DE-97074 Wuerzburg, Germany
| | - Frederic Vollmers
- Institute
for Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, DE-97074 Wuerzburg, Germany
| | - Tessa Lühmann
- Institute
for Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, DE-97074 Wuerzburg, Germany
| | - Jens-Christoph Rybak
- Institute
for Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, DE-97074 Wuerzburg, Germany
| | - Ronja Wittmann
- Institute
for Pharmacy, University of Kiel, Grasweg 9a, DE-24118 Kiel, Germany
| | - Katharina Stank
- Institute
for Pharmacy, University of Kiel, Grasweg 9a, DE-24118 Kiel, Germany
| | - Hartwig Steckel
- Institute
for Pharmacy, University of Kiel, Grasweg 9a, DE-24118 Kiel, Germany
| | | | - Michael Schmidt
- Medical
Clinic and Polyclinic I, University of Wuerzburg, DE-97080, Germany
| | - Petra Högger
- Institute
for Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, DE-97074 Wuerzburg, Germany
| | - Lorenz Meinel
- Institute
for Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, DE-97074 Wuerzburg, Germany
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Sagnella A, Zambianchi M, Durso M, Posati T, Del Rio A, Donnadio A, Mazzanti A, Pistone A, Ruani G, Zamboni R, Benfenati V, Melucci M. APTES mediated modular modification of regenerated silk fibroin in a water solution. RSC Adv 2015. [DOI: 10.1039/c5ra10016j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Chemical modification of regenerated silk fibroin was achieved by exploiting (3-aminopropyl)triethoxysilane acting simultaneously as solvent, carrier in water, grafter of an hydrophobic fluorescent molecule and reinforcing agent.
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Affiliation(s)
| | - Massimo Zambianchi
- Consiglio Nazionale delle Ricerche
- Istituto per la Sintesi Organica e la Fotoreattività (CNR-ISOF)
- 40129 Bologna
- Italy
| | - Margherita Durso
- Consiglio Nazionale delle Ricerche
- Istituto per la Sintesi Organica e la Fotoreattività (CNR-ISOF)
- 40129 Bologna
- Italy
| | - Tamara Posati
- Consiglio Nazionale delle Ricerche
- Istituto per la Sintesi Organica e la Fotoreattività (CNR-ISOF)
- 40129 Bologna
- Italy
| | - Alberto Del Rio
- Consiglio Nazionale delle Ricerche
- Istituto per la Sintesi Organica e la Fotoreattività (CNR-ISOF)
- 40129 Bologna
- Italy
| | - Anna Donnadio
- Dipartimento di Chimica
- University of Perugia
- 06123 Perugia
- Italy
| | - Andrea Mazzanti
- Dipartimento di Chimica Industriale “Toso Montanari”
- University of Bologna
- I-40136 – Bologna
- Italy
| | - Assunta Pistone
- Consiglio Nazionale delle Ricerche
- Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN)
- 40129 Bologna
- Italy
| | - Giampiero Ruani
- Consiglio Nazionale delle Ricerche
- Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN)
- 40129 Bologna
- Italy
| | - Roberto Zamboni
- Consiglio Nazionale delle Ricerche
- Istituto per la Sintesi Organica e la Fotoreattività (CNR-ISOF)
- 40129 Bologna
- Italy
| | - Valentina Benfenati
- Consiglio Nazionale delle Ricerche
- Istituto per la Sintesi Organica e la Fotoreattività (CNR-ISOF)
- 40129 Bologna
- Italy
| | - Manuela Melucci
- Consiglio Nazionale delle Ricerche
- Istituto per la Sintesi Organica e la Fotoreattività (CNR-ISOF)
- 40129 Bologna
- Italy
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43
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Silk fibroin layer-by-layer microcapsules for localized gene delivery. Biomaterials 2014; 35:7929-39. [DOI: 10.1016/j.biomaterials.2014.05.062] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 05/21/2014] [Indexed: 12/23/2022]
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44
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Silk fibroin/collagen and silk fibroin/chitosan blended three-dimensional scaffolds for tissue engineering. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY 2014; 25:243-9. [DOI: 10.1007/s00590-014-1515-z] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 07/16/2014] [Indexed: 11/25/2022]
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