1
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Shirk BD, Heichel DL, Eccles LE, Rodgers LI, Lateef AH, Burke KA, Stoppel WL. Modifying Naturally Occurring, Nonmammalian-Sourced Biopolymers for Biomedical Applications. ACS Biomater Sci Eng 2024. [PMID: 39259773 DOI: 10.1021/acsbiomaterials.4c00689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2024]
Abstract
Natural biopolymers have a rich history, with many uses across the fields of healthcare and medicine, including formulations for wound dressings, surgical implants, tissue culture substrates, and drug delivery vehicles. Yet, synthetic-based materials have been more successful in translation due to precise control and regulation achievable during manufacturing. However, there is a renewed interest in natural biopolymers, which offer a diverse landscape of architecture, sustainable sourcing, functional groups, and properties that synthetic counterparts cannot fully replicate as processing and sourcing of these materials has improved. Proteins and polysaccharides derived from various sources (crustaceans, plants, insects, etc.) are highlighted in this review. We discuss the common types of polysaccharide and protein biopolymers used in healthcare and medicine, highlighting methods and strategies to alter structures and intra- and interchain interactions to engineer specific functions, products, or materials. We focus on biopolymers obtained from natural, nonmammalian sources, including silk fibroins, alginates, chitosans, chitins, mucins, keratins, and resilins, while discussing strategies to improve upon their innate properties and sourcing standardization to expand their clinical uses and relevance. Emphasis will be placed on methods that preserve the structural integrity and native biological functions of the biopolymers and their makers. We will conclude by discussing the untapped potential of new technologies to manipulate native biopolymers while controlling their secondary and tertiary structures, offering a perspective on advancing biopolymer utility in novel applications within biomedical engineering, advanced manufacturing, and tissue engineering.
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Affiliation(s)
- Bryce D Shirk
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Danielle L Heichel
- Department of Chemical Engineering, University of Connecticut, Storrs, Connecticut 06269-3222, United States
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136, United States
| | - Lauren E Eccles
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Liam I Rodgers
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Ali H Lateef
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Kelly A Burke
- Department of Chemical Engineering, University of Connecticut, Storrs, Connecticut 06269-3222, United States
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136, United States
| | - Whitney L Stoppel
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, United States
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
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2
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Agostinacchio F, Fitzpatrick V, Dirè S, Kaplan DL, Motta A. Silk fibroin-based inks for in situ 3D printing using a double crosslinking process. Bioact Mater 2024; 35:122-134. [PMID: 38312518 PMCID: PMC10837071 DOI: 10.1016/j.bioactmat.2024.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/16/2024] [Accepted: 01/16/2024] [Indexed: 02/06/2024] Open
Abstract
The shortage of tissues and organs for transplantation is an urgent clinical concern. In situ 3D printing is an advanced 3D printing technique aimed at printing the new tissue or organ directly in the patient. The ink for this process is central to the outcomes, and must meet specific requirements such as rapid gelation, shape integrity, stability over time, and adhesion to surrounding healthy tissues. Among natural materials, silk fibroin exhibits fascinating properties that have made it widely studied in tissue engineering and regenerative medicine. However, further improvements in silk fibroin inks are needed to match the requirements for in situ 3D printing. In the present study, silk fibroin-based inks were developed for in situ applications by exploiting covalent crosslinking process consisting of a pre-photo-crosslinking prior to printing and in situ enzymatic crosslinking. Two different silk fibroin molecular weights were characterized and the synergistic effect of the covalent bonds with shear forces enhanced the shift in silk secondary structure toward β-sheets, thus, rapid stabilization. These hydrogels exhibited good mechanical properties, stability over time, and resistance to enzymatic degradation over 14 days, with no significant changes over time in their secondary structure and swelling behavior. Additionally, adhesion to tissues in vitro was demonstrated.
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Affiliation(s)
- Francesca Agostinacchio
- National Interuniversity Consortium of Material Science and Technology, Florence, Italy
- BIOtech Research Center and European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Department of Industrial Engineering, University of Trento, Trento, Italy
| | - Vincent Fitzpatrick
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Sandra Dirè
- Materials Chemistry Group & “Klaus Müller” Magnetic Resonance Laboratory, Department of Industrial Engineering, University of Trento, Trento, Italy
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Antonella Motta
- BIOtech Research Center and European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Department of Industrial Engineering, University of Trento, Trento, Italy
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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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Sakunpongpitiporn P, Morarad R, Naeowong W, Niamlang S, Sirivat A. Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) as an insulin carrier in silk fibroin hydrogels for transdermal delivery via iontophoresis. RSC Adv 2024; 14:1549-1562. [PMID: 38179091 PMCID: PMC10763702 DOI: 10.1039/d3ra06857a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 12/16/2023] [Indexed: 01/06/2024] Open
Abstract
In this study, silk fibroin (SF) was utilized as the starting material to fabricate physically crosslinked hydrogels. Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) was synthesized and characterized as a drug carrier, with insulin as the model drug. PEDOT:PSS, with a high electrical conductivity of 1666 ± 49 S cm-1, interacted with insulin molecules via electrostatic interaction by replacing the dopant PSS molecules. Insulin-loaded PEDOT:PSS embedded in the SF hydrogel resulted in an increase in the degree of swelling, pore size, and mesh size of the hydrogel. In the in vitro release and release-permeation experiments, the amounts of insulin release and release-permeation were investigated using a modified Franz diffusion cell, under the effects of SF concentrations, electric fields, and pH values. The amounts of insulin release and release-permeation from the pristine SF hydrogel and the PEDOT:PSS/SF hydrogel followed the power laws with the scaling exponents close to 0.5, indicating the Fickian diffusion or the concentration gradient. Under electric fields, with or without PEDOT:PSS used as the drug carrier, the insulin amount and diffusion coefficient were shown to increase with the increasing electric field due to the electro-repulsive forces between the cathode and insulin molecules and SF chains, electroosmosis, and SF matrix swelling. The SF hydrogel and PEDOT:PSS as the drug carrier are demonstrated herein as new components in the transdermal delivery system for the iontophoretically controlled insulin basal release applicable to diabetes patients.
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Affiliation(s)
- Phimchanok Sakunpongpitiporn
- The Conductive and Electroactive Polymers Research Unit, The Petroleum and Petrochemical College, Chulalongkorn University Bangkok 10330 Thailand
| | - Rawita Morarad
- The Conductive and Electroactive Polymers Research Unit, The Petroleum and Petrochemical College, Chulalongkorn University Bangkok 10330 Thailand
| | - Witthawat Naeowong
- Division of Perioperative and Ambulatory Medicine, Department of Medicine, Faculty of Medicine, Chulalongkorn University Bangkok 10330 Thailand
| | - Sumonman Niamlang
- Department of Materials and Metallurgical Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi Pathumthani 12110 Thailand
| | - Anuvat Sirivat
- The Conductive and Electroactive Polymers Research Unit, The Petroleum and Petrochemical College, Chulalongkorn University Bangkok 10330 Thailand
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5
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Sandau KC, Arrigali EM, Serban BA, Serban MA. Colorimetric Properties of Bombyx mori Silk Fibroin. ACS Biomater Sci Eng 2023; 9:6623-6631. [PMID: 37931249 DOI: 10.1021/acsbiomaterials.3c00794] [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: 11/08/2023]
Abstract
Recent reports highlighted several novel applications for the Bombyx mori silk fibroin (SF), as edible coatings for the preservation of food freshness, smart labels, or packaging materials. This study complements these reports and additionally describes the colorimetric sensing properties of the natural protein that could be explored to enhance the practical value of such applications. Our data show that in response to pH changes, reconstituted SF is able to undergo visible color changes that correlate with the intensity of the stimuli, regardless of its physical format or physical cross-linking state. The intensity of the developed color was proportional to the extent of the protein's hydrolytic degradation. We also found that these pH-driven color changes were reversible and interchangeable, with colorless samples at neutral pH, purple in acidic environments, and yellow under basic conditions. Our mechanistic studies identified tryptophan as being responsible for these colorimetric responses, which could be further intensified by the presence of ionized tyrosine functionalities. In addition, we determined that SF's sensing properties also applied to ultraviolet light exposure. Finally, we showed that the innate sensing capabilities of activated SF can be enhanced via the covalent incorporation of additional tryptophan into the protein. Overall, our results further support the utility of SF for sensing applications.
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Affiliation(s)
- Kolton C Sandau
- Department of Biomedical and Pharmaceutical Sciences, University of Montana, Missoula, Montana 59812, United States
- Montana Biotechnology Center (BIOTECH), University of Montana, Missoula, Montana 59812, United States
| | - Elizabeth M Arrigali
- Department of Biomedical and Pharmaceutical Sciences, University of Montana, Missoula, Montana 59812, United States
- Montana Biotechnology Center (BIOTECH), University of Montana, Missoula, Montana 59812, United States
| | - Bogdan A Serban
- Department of Biomedical and Pharmaceutical Sciences, University of Montana, Missoula, Montana 59812, United States
- Montana Biotechnology Center (BIOTECH), University of Montana, Missoula, Montana 59812, United States
| | - Monica A Serban
- Department of Biomedical and Pharmaceutical Sciences, University of Montana, Missoula, Montana 59812, United States
- Montana Biotechnology Center (BIOTECH), University of Montana, Missoula, Montana 59812, United States
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6
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Kim BJ, Bonacchini GE, Ostrovsky-Snider NA, Omenetto FG. Bimodal Gating Mechanism in Hybrid Thin-Film Transistors Based on Dynamically Reconfigurable Nanoscale Biopolymer Interfaces. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2302062. [PMID: 37640508 DOI: 10.1002/adma.202302062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 07/02/2023] [Indexed: 08/31/2023]
Abstract
In recent years, increased control over naturally derived structural protein formulations and their self-assembly has enabled the application of high-resolution manufacturing techniques to silk-based materials, leading to bioactive interfaces with unprecedented miniaturized formats and functionalities. Here, a hybrid biopolymer-semiconductor device, obtained by integrating nanoscale silk layers in a well-established class of inorganic field-effect transistors (silk-FETs), is presented. The devices offer two distinct modes of operation-either traditional field-effect or electrolyte-gated-enabled by the precisely controlled thickness, morphology, and biochemistry of the integrated silk layers. The different operational modes are selectively accessed by dynamically modulating the free-water content within the nanoscale protein layer from the vapor phase. The utility of these hybrid devices is illustrated in a highly sensitive and ultrafast breath sensor, highlighting the opportunities offered by the integration of nanoscale biomaterial interfaces in conjunction with traditional semiconductor devices, enabling functional outcomes at the intersection between the worlds of microelectronics and biology.
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Affiliation(s)
- Beom Joon Kim
- Silklab, Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | | | | | - Fiorenzo G Omenetto
- Silklab, Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
- Department of Electrical and Computer Engineering, Tufts University, Medford, MA, 02155, USA
- Department of Physics, Tufts University, Medford, MA, 02155, USA
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7
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Wang D, Chen Z, Li M, Hou Z, Zhan C, Zheng Q, Wang D, Wang X, Cheng M, Hu W, Dong B, Shi F, Sitti M. Bioinspired rotary flight of light-driven composite films. Nat Commun 2023; 14:5070. [PMID: 37604907 PMCID: PMC10442326 DOI: 10.1038/s41467-023-40827-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 08/11/2023] [Indexed: 08/23/2023] Open
Abstract
Light-driven actuators have great potential in different types of applications. However, it is still challenging to apply them in flying devices owing to their slow response, small deflection and force output and low frequency response. Herein, inspired by the structure of vine maple seeds, we report a helicopter-like rotary flying photoactuator (in response to 0.6 W/cm2 near-infrared (NIR) light) with ultrafast rotation (~7200 revolutions per minute) and rapid response (~650 ms). This photoactuator is operated based on a fundamentally different mechanism that depends on the synergistic interactions between the photothermal graphene and the hygroscopic agar/silk fibroin components, the subsequent aerodynamically favorable airscrew formation, the jet propulsion, and the aerodynamics-based flying. The soft helicopter-like photoactuator exhibits controlled flight and steering behaviors, making it promising for applications in soft robotics and other miniature devices.
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Affiliation(s)
- Dan Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials & Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, China
- State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials & Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Zhaomin Chen
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials & Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Mingtong Li
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569, Stuttgart, Germany
| | - Zhen Hou
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials & Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Changsong Zhan
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials & Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Qijun Zheng
- Department of Chemical Engineering, Monash University, Clayton, VIC, 3800, Australia
| | - Dalei Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials & Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Xin Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials & Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Mengjiao Cheng
- State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials & Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Wenqi Hu
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569, Stuttgart, Germany
| | - Bin Dong
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials & Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, China.
| | - Feng Shi
- State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials & Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Metin Sitti
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569, Stuttgart, Germany.
- Institute for Biomedical Engineering, ETH Zürich, 8092, Zürich, Switzerland.
- School of Medicine and College of Engineering, Koç University, 34450, Istanbul, Turkey.
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8
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Veit JGS, Weidow M, Serban MA. A versatile, bioengineered skin reconstruction device designed for use in austere environments. Front Bioeng Biotechnol 2023; 11:1208322. [PMID: 37362212 PMCID: PMC10285514 DOI: 10.3389/fbioe.2023.1208322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 05/31/2023] [Indexed: 06/28/2023] Open
Abstract
Austere environments in which access to medical facilities, medical personnel, or even water and electricity is limited or unavailable pose unique challenges for medical device product design. Currently existing skin substitutes are severely inadequate for the treatment of severe burns, chronic wounds, battlefield injuries, or work-related injuries in resource-limited settings. For such settings, an ideal device should be biocompatible, bioresorbable, promote tissue healing, not require trained medical personnel for deployment and use, and should enable topical drug delivery. As proof of concept for such a device, silk fibroin and an antioxidant hyaluronic acid derivative were chosen as primary constituents. The final formulation was selected to optimize tensile strength while retaining mechanical compliance and protection from reactive oxygen species (ROS). The ultimate tensile strength of the device was 438.0 KPa. Viability of dermal fibroblasts challenged with ROS-generating menadione decreased to 49.7% of control, which was rescued by pre-treatment with the hyaluronic acid derivative to 85.0% of control. The final device formulation was also tested in a standardized, validated, in vitro skin irritation test which revealed no tissue damage or statistical difference from control. Improved topical drug delivery was achieved via an integrated silk fibroin microneedle array and selective device processing to generate crosslinked/through pores. The final device including these features showed a 223% increase in small molecule epidermal permeation relative to the control. Scaffold porosity and microneedle integrity before and after application were confirmed by electron microscopy. Next, the device was designed to be self-adherent to enable deployment without the need of traditional fixation methods. Device tissue adhesive strength (12.0 MPa) was evaluated and shown to be comparable to a commercial adhesive surgical drape (12.9 MPa) and superior to an over-the-counter liquid bandage (4.1 MPa). Finally, the device's wound healing potential was assessed in an in vitro full-thickness skin wound model which showed promising device integration into the tissue and cellular migration into and above the device. Overall, these results suggest that this prototype, specifically designed for use in austere environments, is mechanically robust, is cytocompatible, protects from ROS damage, is self-adherent without traditional fixation methods, and promotes tissue repair.
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Affiliation(s)
- Joachim G. S. Veit
- Serban Lab, Department of Biomedical and Pharmaceutical Sciences, University of Montana, Missoula, MT, United States
- Montana Biotechnology Center (BIOTECH), University of Montana, Missoula, MT, United States
| | - Morgan Weidow
- Serban Lab, Department of Biomedical and Pharmaceutical Sciences, University of Montana, Missoula, MT, United States
| | - Monica A. Serban
- Serban Lab, Department of Biomedical and Pharmaceutical Sciences, University of Montana, Missoula, MT, United States
- Montana Biotechnology Center (BIOTECH), University of Montana, Missoula, MT, United States
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9
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Jiang K, Wu Q, Chen Y, Fan D, Chu F. A high-performance bio-based adhesive comprising soybean meal, silk fibroin, and tannic acid inspired by marine organisms. Int J Biol Macromol 2023:125095. [PMID: 37245746 DOI: 10.1016/j.ijbiomac.2023.125095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 05/10/2023] [Accepted: 05/23/2023] [Indexed: 05/30/2023]
Abstract
The sustainable development of high-performance bio-based adhesives is both important and challenging for the wood industry. Herein, inspired by the hydrophobic property of barnacle cement protein and the adhesive property of mussel adhesion protein, a water-resistant bio-based adhesive was developed from silk fibroin (SF) rich in hydrophobic β-sheet structures and tannic acid (TA) rich in catechol groups as reinforcing components and soybean meal molecules rich in reactive groups as substrates. SF and soybean meal molecules formed a water-resistant tough structure through a multiple cross-linking network including covalent bonds, hydrogen bonds, and dynamic borate ester bonds constructed by TA and borax. The wet bond strength for the developed adhesive achieved 1.20 MPa, exhibiting its excellent application capabilities in humid environments. The storage period of the developed adhesive (72 h) was 3 times that of pure soybean meal adhesive owing to the enhanced mold resistance of the adhesive by TA. Furthermore, the developed adhesive demonstrated excellent biodegradability (45.45 % weight loss in 30 days) and flame retardancy (limiting oxygen index of 30.1 %). Overall, this environmental and efficient biomimetic strategy provides a promising and feasible route to develop high-performance bio-based adhesives.
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Affiliation(s)
- Ke Jiang
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
| | - Qiao Wu
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
| | - Yuan Chen
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
| | - Dongbin Fan
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China.
| | - Fuxiang Chu
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China.
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10
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Li Q, Bai F, Sun J, Zhou X, Yuan W, Lin J, Zhang KQ, Li G, Liu Z. Bubble-blowing-inspired sub-micron thick freestanding silk films for programmable electronics. NANOSCALE 2023; 15:3796-3804. [PMID: 36648031 DOI: 10.1039/d2nr05490f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Thin film electronics that are capable of deforming and interfacing with nonplanar surfaces have attracted widespread interest in wearable motion detection or physiological signal recording due to their light weight, low stiffness, and high conformality. However, it is still a challenge to fabricate freestanding thin film substrates or matrices with only sub-micron thickness in a simple way, especially for those materials with metastable conformations, like regenerated silk protein. Herein, we developed a dip-coating method for the fabrication of sub-micron thick freestanding silk films inspired by blowing soap bubbles. Using a closed-loop frame to dip-coat in a concentrated silk fibroin aqueous solution, the substrate-free silk films with a thickness as low as hundreds of nanometres (∼150 nm) can be easily obtained after solvent evaporation. The silk films have extremely smooth surfaces (Rq < 3 nm) and can be tailored with different geometric shapes. The naturally dried silk films possess random coil dominated uncrystallized secondary structures, exhibiting high modulation ability and adaptability, which can be conformally attached on wrinkled skin or wrapped on human hair. Considering the methodological advantages and the unique properties of the obtained sub-micron thick silk films, several thin film based programmable electronics including transient/durable circuits, skin electrodes, transferred skin light-emitting devices and injectable electronics are successfully demonstrated after being deposited with gold or conducting polymer layers. This research provides a new avenue for preparing freestanding thin polymer films, showing great promise for developing thin film electronics in wearable and biomedical applications.
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Affiliation(s)
- Qingsong Li
- CAS Key Laboratory of Human-Machine Intelligence-Synergy Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen 518055, China.
| | - Fengjiao Bai
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China.
| | - Jing Sun
- CAS Key Laboratory of Human-Machine Intelligence-Synergy Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen 518055, China.
| | - Xiaomeng Zhou
- CAS Key Laboratory of Human-Machine Intelligence-Synergy Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen 518055, China.
| | - Wei Yuan
- Printable Electronics Research Centre, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, China
| | - Jin Lin
- CAS Key Laboratory of Human-Machine Intelligence-Synergy Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen 518055, China.
| | - Ke-Qin Zhang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China.
| | - Guanglin Li
- CAS Key Laboratory of Human-Machine Intelligence-Synergy Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen 518055, China.
| | - Zhiyuan Liu
- CAS Key Laboratory of Human-Machine Intelligence-Synergy Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen 518055, China.
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11
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Emonson NS, Randall JD, Allardyce BJ, Stanfield MK, Dharmasiri B, Stojcevski F, Henderson LC. Promoting Silk Fibroin Adhesion to Stainless Steel Surfaces by Interface Tailoring. Chempluschem 2023; 88:e202200335. [PMID: 36449627 DOI: 10.1002/cplu.202200335] [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: 09/28/2022] [Revised: 11/07/2022] [Indexed: 11/11/2022]
Abstract
Bonding dissimilar materials has been a persistent challenge for decades. This paper presents a method to modify a stainless steel surface (316 L), routinely used in medical applications to enable the significant adhesion of a biopolymer (silk fibroin). The metallic surface was first covalently grafting with polyacrylamide, to enable a hydrogen bonding compatible surface. The polymerisation was initiated via the irreversible electrochemical reduction of a 4-nitrobenzene diazonium salt (20 mM), in the presence of an acrylamide monomer (1 M) at progressively faster scan rates (0.01 V/s to 1 V/s). Examination of the modified samples by FT-IR was consistent with successful surface modification, via observations of the acrylamide carbonyl (1600-1650 cm-1 ) was observed, with more intense peaks correlating to slower scan rates. Similar observations were made with respect to increasing surface polarity, assessed by water contact angle. Reductions of >60° were observed for the grafted surfaces, relative to the unmodified control materials, indicating a surface able to undergo significant hydrogen bonding. The adhesion of silk to the metallic surface was quantified using a lap shear test, effectively using silk fibroin as an adhesive. Adhesion improvements of 5-7-fold, from 4.1 MPa to 29.3 MPa per gram of silk fibroin, were observed for the treated samples, highlighting the beneficial effect of this surface treatment. The methods developed in this work can be transferred to any metallic (or conductive) surface and can be tailored to complement any desired interface.
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Affiliation(s)
- Nicholas S Emonson
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria, 3216, Australia
| | - James D Randall
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria, 3216, Australia
| | - Benjamin J Allardyce
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria, 3216, Australia
| | - Melissa K Stanfield
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria, 3216, Australia
| | - Bhagya Dharmasiri
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria, 3216, Australia
| | - Filip Stojcevski
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria, 3216, Australia
| | - Luke C Henderson
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria, 3216, Australia
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12
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Choi W, Jun T, Lee M, Park K, Choi M, Jung S, Cha JK, Kwon JS, Jin Y, Lee S, Ryu DY, Hong J. Regulation of the Inevitable Water-Responsivity of Silk Fibroin Biopolymer by Polar Amino Acid Activation. ACS NANO 2022; 16:17274-17288. [PMID: 36129365 DOI: 10.1021/acsnano.2c07971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In nature, water is vital for maintaining homeostasis. Particularly, organisms (e.g., plant leaf, bird feather) exploit water fluidics for motions. Hydration-adaptive crystallization is the representative water-responsive actuation of biopolymers. This crystallization has inspired the development of intelligent human-robot interfaces. At the same time, it hinders the consistent adhesion of tissue adhesive. As hydration-adaptive crystallization is inevitable, the on-demand control of crystallization is desirable in the innovative biopolymeric biomedical systems. To this end, this study developed an amino acid-based technology to artificially up- or down-regulate the inevitable crystallization of silk fibroin. A case II diffusion model was constructed, and it revealed that the activity of polar amino acid is related to crystallization kinetics. Furthermore, the water dynamics study suggested that active amino acid stabilizes crystallization-triggering water molecules. As a proof-of-concept, we verified that a 30% increase in the activity of serine resulted in a 50% decrease in the crystallization rate. Furthermore, the active amino acid-based suppression of hydration-adaptive crystallization enabled the silk fibroin to keep its robust adhesion (approximately 160 kJ m-3) by reducing the water-induced loss of adhesive force. The proposed silk fibroin was demonstrated as a stable tissue adhesive applied on ex vivo porcine mandible tissue. This amino acid-based regulation of hydration-adaptive crystallization will pioneer next-generation biopolymer-based healthcare.
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Affiliation(s)
- Woojin Choi
- Department of Chemical and Biomolecular Engineering, College of Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Taesuk Jun
- Department of Chemical and Biomolecular Engineering, College of Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Milae Lee
- Department of Chemical and Biomolecular Engineering, College of Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Kyungtae Park
- Department of Chemical and Biomolecular Engineering, College of Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Moonhyun Choi
- Department of Chemical and Biomolecular Engineering, College of Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Sungwon Jung
- Department of Chemical and Biomolecular Engineering, College of Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jae-Kook Cha
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, 03722, Republic of Korea
| | - Jae-Sung Kwon
- Department and Research Institute of Dental Biomaterials and Bioengineering and BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, 03722, Republic of Korea
| | - Youngho Jin
- Agency for Defense Development, Chem-Bio Technology Center, Yuseong-Gu, Daejeon, 34186, Republic of Korea
| | - Sangmin Lee
- School of Mechanical Engineering, Chung-ang University, 84, Heukseok-ro, Dongjak-gu, Seoul, 06974, Republic of Korea
| | - Du Yeol Ryu
- Department of Chemical and Biomolecular Engineering, College of Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jinkee Hong
- Department of Chemical and Biomolecular Engineering, College of Engineering, Yonsei University, Seoul, 03722, Republic of Korea
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13
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Arrigali EM, Serban MA. Development and Characterization of a Topically Deliverable Prophylactic Against Oxidative Damage in Cochlear Cells. Front Pharmacol 2022; 13:907516. [PMID: 35754472 PMCID: PMC9226984 DOI: 10.3389/fphar.2022.907516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/23/2022] [Indexed: 11/17/2022] Open
Abstract
Hearing loss affects roughly 466 million people worldwide. While the causes of hearing loss are diverse, mechanistically, inflammation and oxidative stress have been identified as major players in hearing loss regardless of pathogenesis. Treatment options remain extremely limited and there is currently no FDA approved drug therapy. Studies indicate that antioxidants such as d-Methionine have shown some protective effects; however, these studies involved systemic or invasive localized delivery methods and highlighted the need for the development of minimally invasive localized therapeutic approaches. Described herein is the development of an antioxidant-conjugated system that shows prophylactic potential against oxidative damage and appears suitable for topical delivery. Specifically, our covalent conjugate of hyaluronan with d-Methionine shows cytocompatibility and protection from oxidative stress in two mouse cochlear cell lines (HEI-OC1 and SV-k1). Mechanistically, the data indicate that the protective effects of the conjugate are due to the hyaluronan-mediated cellular internalization of the antioxidant. Most notably, the conjugate can efficiently permeate through an in vitro round window membrane model without the loss of the attached antioxidant, for subsequent delivery of the therapeutic cargo to the hearing sensory cells. Collectively these findings show that the novel conjugate could be a potential topical preventive agent against hearing loss.
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Affiliation(s)
- Elizabeth M Arrigali
- Pharmaceutical Sciences and Drug Design Program, Department of Biomedical and Pharmaceutical Sciences, University of Montana, Missoula, MT, United States
| | - Monica A Serban
- Pharmaceutical Sciences and Drug Design Program, Department of Biomedical and Pharmaceutical Sciences, University of Montana, Missoula, MT, United States.,Montana Biotechnology Center, University of Montana, Missoula, MT, United States
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14
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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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15
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Watanabe T, Terada K, Takemura S, Masunaga H, Tsuchiya K, Lamprou A, Numata K. Chemoenzymatic Polymerization of l-Serine Ethyl Ester in Aqueous Media without Side-Group Protection. ACS POLYMERS AU 2022; 2:147-156. [PMID: 36855524 PMCID: PMC9954318 DOI: 10.1021/acspolymersau.1c00052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Poly(l-serine) (polySer) has tremendous potential as a polypeptide-based functional material due to the utility of the hydroxyl group on its side chain; however, tedious protection/deprotection of the hydroxyl groups is required for its synthesis. In this study, polySer was synthesized by the chemoenzymatic polymerization (CEP) of l-serine ethyl ester (Ser-OEt) or l-serine methyl ester (Ser-OMe) using papain as a catalyst in an aqueous medium. The CEP of Ser-OEt proceeded at basic pH ranging from 7.5 to 9.5 and resulted in the maximum precipitate yield of polySer at an optimized pH of 8.5. A series of peaks detected by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry revealed that the formed precipitate consisted of polySer with a degree of polymerization ranging from 5 to 22. Moreover, infrared spectroscopy, circular dichroism spectroscopy, and synchrotron wide-angle X-ray diffraction measurements indicated that the obtained polySer formed a β-sheet/strand structure. This is the first time the synthesis of polySer was realized by CEP in aqueous solution without protecting the hydroxyl group of the Ser monomer.
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Affiliation(s)
- Takumi Watanabe
- Department
of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto Daigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kayo Terada
- Department
of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto Daigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Shogo Takemura
- Department
of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto Daigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Hiroyasu Masunaga
- Japan
Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Kousuke Tsuchiya
- Department
of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto Daigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan,Biomacromolecules
Research Team, RIKEN Center for Sustainable
Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan,
| | - Alexandros Lamprou
- Innovation
Campus Asia Pacific (Shanghai), BASF Advanced
Chemicals Co., Ltd., No 300, Jiangxinsha Road, Pudong, Shanghai 200137, P.R. China
| | - Keiji Numata
- Department
of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto Daigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan,Biomacromolecules
Research Team, RIKEN Center for Sustainable
Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan,
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16
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Bon S, Chiesa I, Degli Esposti M, Morselli D, Fabbri P, De Maria C, Morabito A, Coletta R, Calamai M, Pavone FS, Tonin R, Morrone A, Giorgi G, Valentini L. Carbon Nanotubes/Regenerated Silk Composite as a Three-Dimensional Printable Bio-Adhesive Ink with Self-Powering Properties. ACS APPLIED MATERIALS & INTERFACES 2021; 13:21007-21017. [PMID: 33934601 PMCID: PMC8153539 DOI: 10.1021/acsami.1c03288] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 04/18/2021] [Indexed: 05/21/2023]
Abstract
In this study, regenerated silk (RS) obtained from Bombyx Mori cocoons is compounded with carboxyl-functionalized carbon nanotubes (f-CNTs) in an aqueous environment for the fabrication of functional bio-adhesives. Molecular interactions between RS and carboxyl groups of CNTs result in structural increase of the β-sheet formation, obtaining a resistant adhesive suitable for a wet biological substrate. Moreover, the functionalization of CNTs promotes their dispersion in RS, thus enabling the production of films with controlled electrical conductivity. The practical utility of such a property is demonstrated through the fabrication of a piezoelectric device implanted in a rat to monitor the breathing in vivo and to be used as a self-powered system. Finally, RS/f-CNTs were used as a printable biomaterial ink to three dimensionally print bilayer hollow tubular structures composed of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and RS. Initial tests carried out by seeding and growing human skin fibroblasts demonstrated that the 3D printed bilayer hollow cylindrical structures offer a suitable surface for the seeded cells to attach and proliferate. In general, the herein proposed RS/f-CNT composite serves as a versatile material for solvent-free dispersion processing and 3D printing, thus paving a new approach to prepare multifunctional materials with potential applications of great interest in sealing biological substrates and implantable devices for regenerative medicine.
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Affiliation(s)
- Silvia
Bittolo Bon
- Dipartimento
di Ingegneria Civile e Ambientale, Università
degli Studi di Perugia, Strada di Pentima 4, Terni 05100, Italy
- Italian
Consortium for Science and Technology of Materials (INSTM), Via Giusti 9, Firenze 50121, Italy
| | - Irene Chiesa
- Department
of Ingegneria dell’Informazione and Research Center E. Piaggio, University of Pisa, Largo Lucio Lazzarino 1, Pisa 56122, Italy
| | - Micaela Degli Esposti
- Italian
Consortium for Science and Technology of Materials (INSTM), Via Giusti 9, Firenze 50121, Italy
- Department
of Civil Chemical, Environmental and Materials Engineering (DICAM), Università; di Bologna, Via Terracini 28, Bologna 40131, Italy
| | - Davide Morselli
- Italian
Consortium for Science and Technology of Materials (INSTM), Via Giusti 9, Firenze 50121, Italy
- Department
of Civil Chemical, Environmental and Materials Engineering (DICAM), Università; di Bologna, Via Terracini 28, Bologna 40131, Italy
| | - Paola Fabbri
- Italian
Consortium for Science and Technology of Materials (INSTM), Via Giusti 9, Firenze 50121, Italy
- Department
of Civil Chemical, Environmental and Materials Engineering (DICAM), Università; di Bologna, Via Terracini 28, Bologna 40131, Italy
| | - Carmelo De Maria
- Department
of Ingegneria dell’Informazione and Research Center E. Piaggio, University of Pisa, Largo Lucio Lazzarino 1, Pisa 56122, Italy
| | - Antonino Morabito
- Department
of Pediatric Surgery, Meyer Children’s
Hospital, Viale Pieraccini
24, Firenze 50139, Italy
- Dipartimento
Neuroscienze, Psicologia, Area del Farmaco e della Salute del Bambino
NEUROFARBA, Università degli Studi
di Firenze, Viale Pieraccini
6, Firenze 50121, Italy
| | - Riccardo Coletta
- Department
of Pediatric Surgery, Meyer Children’s
Hospital, Viale Pieraccini
24, Firenze 50139, Italy
- School
of Health and Society, University of Salford, Salford M5 4WT, United Kingdom
| | - Martino Calamai
- European
Laboratory for Non-linear Spectroscopy (LENS), University of Florence, Sesto
Fiorentino (FI) 50129, Italy
- National
Institute of Optics -National Research Council (CNR-INO), Sesto Fiorentino (FI) 50129, Italy
| | - Francesco Saverio Pavone
- European
Laboratory for Non-linear Spectroscopy (LENS), University of Florence, Sesto
Fiorentino (FI) 50129, Italy
- Department
of Physics, University of Florence, Sesto Fiorentino (FI) 50121, Italy
| | - Rodolfo Tonin
- Molecular
and Cell Biology Laboratory, Paediatric Neurology Unit
and Laboratories, Neuroscience Department, Meyer Children’s Hospital, Firenze 50139, Italy
| | - Amelia Morrone
- Dipartimento
Neuroscienze, Psicologia, Area del Farmaco e della Salute del Bambino
NEUROFARBA, Università degli Studi
di Firenze, Viale Pieraccini
6, Firenze 50121, Italy
- Molecular
and Cell Biology Laboratory, Paediatric Neurology Unit
and Laboratories, Neuroscience Department, Meyer Children’s Hospital, Firenze 50139, Italy
| | - Giacomo Giorgi
- Dipartimento di Ingegneria Civile e Ambientale (DICA), Università degli Studi di Perugia, Via G. Duranti 93, Perugia 06125, Italy
- CNR-SCITEC, Perugia I-06123, Italy
| | - Luca Valentini
- Dipartimento
di Ingegneria Civile e Ambientale, Università
degli Studi di Perugia, Strada di Pentima 4, Terni 05100, Italy
- Italian
Consortium for Science and Technology of Materials (INSTM), Via Giusti 9, Firenze 50121, Italy
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17
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Wulandari E, Budhisatria R, Soeriyadi AH, Willcox M, Boyer C, Wong EHH. Releasable antimicrobial polymer-silk coatings for combating multidrug-resistant bacteria. Polym Chem 2021. [DOI: 10.1039/d1py01219c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Controlled release of synthetic cationic antimicrobial polymers from silk-based coating for preventing bacterial biofilm formation on the surface and for killing planktonic bacteria cells.
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Affiliation(s)
- Erna Wulandari
- Australian Centre for NanoMedicine (ACN), School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW 2052, Australia
| | - Rachel Budhisatria
- Mochtar Riady Institute of Nanotechnology (MRIN), Banten 15810, Indonesia
| | | | - Mark Willcox
- School of Optometry and Vision Science, University of New South Wales (UNSW), Sydney, NSW 2052, Australia
| | - Cyrille Boyer
- Australian Centre for NanoMedicine (ACN), School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW 2052, Australia
| | - Edgar H. H. Wong
- Australian Centre for NanoMedicine (ACN), School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW 2052, Australia
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18
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Wang Z, Serban BA, Serban MA. Recombinant Silk Fibroin Crystalline Regions as Biomaterial Alternatives to the Full-Length Protein. ACS Biomater Sci Eng 2020; 6:7004-7010. [PMID: 33320632 DOI: 10.1021/acsbiomaterials.0c01103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Silk fibroin is a natural polymer with a unique repetitive structure that translates to extraordinary properties in terms of processability and mechanical properties. The Bombyx mori silk has a molecular weight of ∼415 kDa and consists of a light chain and a heavy chain. Its heavy chain is organized into 12 crystalline domains. Each of these crystalline domains contains subdomains of ∼70 amino acid containing blocks. It is well understood that the heavy chain of the protein is responsible for its processing versatility and excellent mechanical properties; however, the need for the high number of monomeric repeating units is unclear, and the individual properties of crystalline regions compared to those of the full-length protein are not understood. The work described herein assessed the possibility of using recombinant crystalline regions as alternative biomaterials for applications such as tissue adhesives. Our results indicate that while the two tested substructures do not fully recapitulate the native silk fibroin's properties, they appear to be a suitable alternative for the production of silk-based medical adhesives.
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Affiliation(s)
- Zifan Wang
- Center for Biomolecular Structure and Dynamics, and Division of Biological Sciences, University of Montana, Missoula, Montana 59812, United States
| | - Bogdan A Serban
- Department of Biomedical and Pharmaceutical Sciences, University of Montana, Missoula, Montana 59812, United States
| | - Monica A Serban
- Department of Biomedical and Pharmaceutical Sciences, University of Montana, Missoula, Montana 59812, United States.,Department of Chemistry and Biochemistry, University of Montana, Missoula, Montana 59812, United States
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19
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Serban BA, Shi K, Alverson JB, Hoody J, Priestley ND, Park AH, Serban MA. Single Application Cold-Chain Independent Drug Delivery System for Outer Ear Infections. ACS Biomater Sci Eng 2020; 6:5969-5978. [PMID: 33299928 PMCID: PMC7720692 DOI: 10.1021/acsbiomaterials.0c01223] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Outer ear infections (OE) affect millions of people annually with significant associated healthcare costs. Incorrect administration or non-compliance with the treatment regimen can lead to infection persistence, recurrence, antibiotic resistance, and in severe cases aggravation to malignant otitis externa. Such issues are particularly pertinent for military personnel, patients in nursing homes, the geriatric population, for patients with head or hand tremors and for those with limited or no access to proper healthcare. With the intent of using traditional material science principles to deconvolute material design while increasing relevance and efficacy, we developed a single application, cold-chain independent thixotropic drug delivery system. This can be easily applied into the ear as a liquid, then gels to deliver effective concentrations of antibiotics against bacterial strains commonly associated with OE. The system maintains thixotropic properties over several stress/no stress cycles, shows negligible swelling and temperature dependence, and does not impact the minimum inhibitory concentration or bactericidal effects of relevant antibiotics. Moreover, the thixogels are biocompatible and are well tolerated in the ear. This drug delivery system can readily translate into a user-friendly product, could improve compliance via a single application by the diagnosing health care provider, is expected to effectively treat OE and minimize the development of antibiotic resistance, infection recurrence or exacerbation.
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Affiliation(s)
- Bogdan A. Serban
- Department of Biomedical and Pharmaceutical Sciences, University of Montana, Missoula, MT 59812, USA
| | - Kevin Shi
- Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Utah, Salt Lake City, UT 84113, USA
| | - Jeremy B. Alverson
- Department of Chemistry and Biochemistry, University of Montana, Missoula, MT 59812, USA
| | - John Hoody
- Department of Chemistry and Biochemistry, University of Montana, Missoula, MT 59812, USA
| | - Nigel D. Priestley
- Department of Chemistry and Biochemistry, University of Montana, Missoula, MT 59812, USA
| | - Albert H. Park
- Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Utah, Salt Lake City, UT 84113, USA
| | - Monica A. Serban
- Department of Biomedical and Pharmaceutical Sciences, University of Montana, Missoula, MT 59812, USA
- Department of Chemistry and Biochemistry, University of Montana, Missoula, MT 59812, USA
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20
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Emonson NS, Eyckens DJ, Allardyce BJ, Hendlmeier A, Stanfield MK, Soulsby LC, Stojcevski F, Henderson LC. Using In Situ Polymerization to Increase Puncture Resistance and Induce Reversible Formability in Silk Membranes. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E2252. [PMID: 32422884 PMCID: PMC7287606 DOI: 10.3390/ma13102252] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/08/2020] [Accepted: 05/11/2020] [Indexed: 11/17/2022]
Abstract
Silk fibroin is an excellent biopolymer for application in a variety of areas, such as textiles, medicine, composites and as a novel material for additive manufacturing. In this work, silk membranes were surface modified by in situ polymerization of aqueous acrylic acid, initiated by the reduction of various aryldiazonium salts with vitamin C. Treatment times of 20 min gave membranes which possessed increased tensile strength, tensile modulus, and showed significant increased resistance to needle puncture (+131%), relative to 'untreated' standards. Most interestingly, the treated silk membranes were able to be reversibly formed into various shapes via the hydration and plasticizing of the surface bound poly(acrylic acid), by simply steaming the modified membranes. These membranes and their unique properties have potential applications in advanced textiles, and as medical materials.
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Affiliation(s)
| | | | | | | | | | | | - Filip Stojcevski
- Carbon Nexus, Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia; (N.S.E.); (D.J.E.); (B.J.A.); (A.H.); (M.K.S.); (L.C.S.)
| | - Luke C. Henderson
- Carbon Nexus, Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia; (N.S.E.); (D.J.E.); (B.J.A.); (A.H.); (M.K.S.); (L.C.S.)
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21
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Heichel DL, Burke KA. Enhancing the Carboxylation Efficiency of Silk Fibroin through the Disruption of Noncovalent Interactions. Bioconjug Chem 2020; 31:1307-1312. [PMID: 32378886 DOI: 10.1021/acs.bioconjchem.0c00168] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Silk fibroin is a semicrystalline protein used as a renewable polymer source and as a biomaterial platform, but existing methods to synthetically modify fibroin suffer from low efficiencies that can limit the protein's utility. This work reports on a mild synthesis that results in a 2-fold increase in carboxylation through the disruption of noncovalent interactions during the reaction. Importantly, silk fibroin maintains its ability to form β-sheets that are critical for tailoring mechanical and degradation properties, as well as for rendering solid constructs (e.g., films and scaffolds) insoluble in water. Increasing carboxyl functionalization affords control over protein charge, which permits tailoring the loading and release of small molecules using electrostatic interactions. Disruption of noncovalent interactions during aqueous carbodiimide coupling also significantly enhances conjugation efficiency of molecules containing primary amine groups, thus enabling high degrees of functionalization with biological molecules, such as proteins and peptides, for biomaterial applications.
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Affiliation(s)
- Danielle L Heichel
- Polymer Program, Institute of Materials Science, University of Connecticut, 97 North Eagleville Road Unit 3136, Storrs, Connecticut 06269-3136, United States
| | - Kelly A Burke
- Polymer Program, Institute of Materials Science, University of Connecticut, 97 North Eagleville Road Unit 3136, Storrs, Connecticut 06269-3136, United States.,Department of Chemical and Biomolecular Engineering, University of Connecticut, 191 Auditorium Road Unit 3222, Storrs, Connecticut 06269-3222, United States.,Department of Biomedical Engineering, University of Connecticut, 260 Glenbrook Road Unit 3247, Storrs, Connecticut 06269-3247, United States
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