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D'Onofrio I, De Giorgio G, Sajapin R, Vurro D, Liboà A, Dembech E, Trevisi G, Botti M, Galstyan V, Tarabella G, D'Angelo P. Inhalable drug-loaded silk fibroin carriers for pulmonary drug delivery. RSC Adv 2024; 14:27288-27297. [PMID: 39219844 PMCID: PMC11362913 DOI: 10.1039/d4ra03324h] [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: 05/06/2024] [Accepted: 08/03/2024] [Indexed: 09/04/2024] Open
Abstract
The design and development of engineered micro and nano-carriers offering superior therapeutic performance compared to traditional delivery forms, are crucial in pharmaceutical research. Aerosolization and inhalation of carriers with improved solubility/stability of insoluble drugs, has huge potential for targeted drug delivery (DD) in various pulmonary diseases. Indeed, dedicated carriers must meet specific dimensional rules for proper lung delivery. Particles between 2-10 μm in size are normally deposited in the tracheobronchial region, while particles of 0.5-2 μm may be properly deposited in the alveoli. In this work, we report the development of inhalable nanostructured carries made of a 'green' bio-inspired polymer from aqueous solutions, i.e. silk fibroin (SF), efficiently loaded with a hydrophobic drug, i.e. the thyroid hormone levothyroxine (L-T4), a drug for the treatment of idiopathic pulmonary fibrosis. The aim is to optimize a standard method for the synthesis of SF-based nanocarriers with controlled size and shape, where a fine control of their geometrical properties is aimed at efficiently controlling the pulmonary DD. L-T4 loaded SF particles were synthesized through a one-pot co-precipitation method. Optimized systems were determined by varying the chemo-physical parameters during the synthesis. Ethylenediaminetetraacetic acid (EDTA) was used to remove CaCO3 cores. The proposed synthesis routes have led to two SF structures, whose structural heterogeneity and nanostructured morphology have been demonstrated using fluorescence microscopy, DLS, SEM and EDX. Two systems with varying shape and size have been obtained: (i) a flat disk-like SF structure with an irregular surface and an in-plane length of about 1-2 μm; (ii) solid SF nanospheres, obtained using ethylene glycol as additive, showing two size populations (main diameters of 0.5 μm and 1.7 μm). Solid nanospherical systems, in particular, show a tendency to arrange into agglomerates that, when loosely bound into smaller particles, can facilitate the delivery at the alveoli. Both formulations exhibited similar drug loading efficiencies, evaluated by HPLC analysis. However, SF nanospheres showed greater in vitro drug release after 24 hours. The demonstrated control over the characteristics imparted to the proposed DD systems may be critical to select the most suitable size/shape to achieve high rates of delivery to the appropriate lung compartment.
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Affiliation(s)
- Ilenia D'Onofrio
- Institute of Materials for Electronics and Magnetism, IMEM-CNR P.co Area delle Scienze 37/A 43124 Parma Italy
- Graduate School in Science and Technologies of Materials, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma Parco Area delle Scienze, 11/A 43121 Parma Italy
| | - Giuseppe De Giorgio
- Institute of Materials for Electronics and Magnetism, IMEM-CNR P.co Area delle Scienze 37/A 43124 Parma Italy
| | - Roman Sajapin
- Institute of Materials for Electronics and Magnetism, IMEM-CNR P.co Area delle Scienze 37/A 43124 Parma Italy
| | - Davide Vurro
- Institute of Materials for Electronics and Magnetism, IMEM-CNR P.co Area delle Scienze 37/A 43124 Parma Italy
| | - Aris Liboà
- Institute of Materials for Electronics and Magnetism, IMEM-CNR P.co Area delle Scienze 37/A 43124 Parma Italy
- Graduate School in Science and Technologies of Materials, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma Parco Area delle Scienze, 11/A 43121 Parma Italy
| | - Elena Dembech
- Institute of Materials for Electronics and Magnetism, IMEM-CNR P.co Area delle Scienze 37/A 43124 Parma Italy
| | - Giovanna Trevisi
- Institute of Materials for Electronics and Magnetism, IMEM-CNR P.co Area delle Scienze 37/A 43124 Parma Italy
| | - Maddalena Botti
- Institute of Materials for Electronics and Magnetism, IMEM-CNR P.co Area delle Scienze 37/A 43124 Parma Italy
- Department of Veterinary Medical Sciences, University of Parma Via del Taglio, 10 43121 Parma Italy
| | - Vardan Galstyan
- Institute of Materials for Electronics and Magnetism, IMEM-CNR P.co Area delle Scienze 37/A 43124 Parma Italy
- Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia Via Vivarelli 10 41125 Modena Italy
| | - Giuseppe Tarabella
- Institute of Materials for Electronics and Magnetism, IMEM-CNR P.co Area delle Scienze 37/A 43124 Parma Italy
| | - Pasquale D'Angelo
- Institute of Materials for Electronics and Magnetism, IMEM-CNR P.co Area delle Scienze 37/A 43124 Parma Italy
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Osawa S, Iwaide S, Kobayashi K, Oba R, Murakami T. Studies on the potential risk of amyloidosis from exposure to cultured fibril from silk fibroin. Biomed Phys Eng Express 2024; 10:055008. [PMID: 38959872 DOI: 10.1088/2057-1976/ad5e86] [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: 04/17/2024] [Accepted: 07/03/2024] [Indexed: 07/05/2024]
Abstract
Amyloid A (AA) amyloidosis is induced by administering amyloid fibrils to animals under inflammatory conditions. Silk fibroin (SF), the main component of silk threads, forms amyloid-like fibrils and has been previously reported to induce AA amyloidosis in mice. In this study, SF was cultured in ethanol solution, and after confirming fibril formation through thioflavin T assay, Congo red assay, and observation under electron microscopy, cultured SF ethanol solutions were administered to mice via various routes to investigate the induction of target organs and amyloidosis. As a result, cultured SF ethanol solutions were confirmed to reach the lungs and spleen, but no amyloid deposition was observed. While SF forms amyloid-like fibril structures through cultivation in ethanol solution, its amyloid-enhancing factor (AEF) activity is considered low in mice.
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Affiliation(s)
- Satomi Osawa
- Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Susumu Iwaide
- Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Kyoko Kobayashi
- Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Ryohei Oba
- Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Tomoaki Murakami
- Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
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3
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Song Y, Hu C, Wang Z, Wang L. Silk-based wearable devices for health monitoring and medical treatment. iScience 2024; 27:109604. [PMID: 38628962 PMCID: PMC11019284 DOI: 10.1016/j.isci.2024.109604] [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] [Indexed: 04/19/2024] Open
Abstract
Previous works have focused on enhancing the tensile properties, mechanical flexibility, biocompatibility, and biodegradability of wearable devices for real-time and continuous health management. Silk proteins, including silk fibroin (SF) and sericin, show great advantages in wearable devices due to their natural biodegradability, excellent biocompatibility, and low fabrication cost. Moreover, these silk proteins possess great potential for functionalization and are being explored as promising candidates for multifunctional wearable devices with sensory capabilities and therapeutic purposes. This review introduces current advancements in silk-based constituents used in the assembly of wearable sensors and adhesives for detecting essential physiological indicators, including metabolites in body fluids, body temperature, electrocardiogram (ECG), electromyogram (EMG), pulse, and respiration. SF and sericin play vital roles in addressing issues related to discomfort reduction, signal fidelity improvement, as well as facilitating medical treatment. These developments signify a transition from hospital-centered healthcare toward individual-centered health monitoring and on-demand therapeutic interventions.
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Affiliation(s)
- Yu Song
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Hubei Key Laboratory of Regenerative Medicine and Multi-disciplinary Translational Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Chuting Hu
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Hubei Key Laboratory of Regenerative Medicine and Multi-disciplinary Translational Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zheng Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Hubei Key Laboratory of Regenerative Medicine and Multi-disciplinary Translational Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lin Wang
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Hubei Key Laboratory of Regenerative Medicine and Multi-disciplinary Translational Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Hubei Provincial Engineering Research Center of Clinical Laboratory and Active Health Smart Equipment, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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Qi X, Wang Y, Yu H, Liu R, Leppert A, Zheng Z, Zhong X, Jin Z, Wang H, Li X, Wang X, Landreh M, A Morozova-Roche L, Johansson J, Xiong S, Iashchishyn I, Chen G. Spider Silk Protein Forms Amyloid-Like Nanofibrils through a Non-Nucleation-Dependent Polymerization Mechanism. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2304031. [PMID: 37455347 DOI: 10.1002/smll.202304031] [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: 05/13/2023] [Revised: 06/29/2023] [Indexed: 07/18/2023]
Abstract
Amyloid fibrils-nanoscale fibrillar aggregates with high levels of order-are pathogenic in some today incurable human diseases; however, there are also many physiologically functioning amyloids in nature. The process of amyloid formation is typically nucleation-elongation-dependent, as exemplified by the pathogenic amyloid-β peptide (Aβ) that is associated with Alzheimer's disease. Spider silk, one of the toughest biomaterials, shares characteristics with amyloid. In this study, it is shown that forming amyloid-like nanofibrils is an inherent property preserved by various spider silk proteins (spidroins). Both spidroins and Aβ capped by spidroin N- and C-terminal domains, can assemble into macroscopic spider silk-like fibers that consist of straight nanofibrils parallel to the fiber axis as observed in native spider silk. While Aβ forms amyloid nanofibrils through a nucleation-dependent pathway and exhibits strong cytotoxicity and seeding effects, spidroins spontaneously and rapidly form amyloid-like nanofibrils via a non-nucleation-dependent polymerization pathway that involves lateral packing of fibrils. Spidroin nanofibrils share amyloid-like properties but lack strong cytotoxicity and the ability to self-seed or cross-seed human amyloidogenic peptides. These results suggest that spidroins´ unique primary structures have evolved to allow functional properties of amyloid, and at the same time direct their fibrillization pathways to avoid formation of cytotoxic intermediates.
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Affiliation(s)
- Xingmei Qi
- The Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Yu Wang
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, 14157, Sweden
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin, 150040, China
| | - Hairui Yu
- The Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Ruifang Liu
- The Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Axel Leppert
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Solna, 17165, Sweden
| | - Zihan Zheng
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, 14157, Sweden
- Department of Pharmacology, Xi'an Jiaotong University, Shaanxi, 710061, China
| | - Xueying Zhong
- School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Biomedical Engineering and Health Systems, KTH Royal Institute of Technology, Huddinge, 14152, Sweden
| | - Zhen Jin
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, 14157, Sweden
- Department of Pharmacology, Xi'an Jiaotong University, Shaanxi, 710061, China
| | - Han Wang
- The Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Xiaoli Li
- Department of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, China
| | - Xiuzhe Wang
- Department of Neurology, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Michael Landreh
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Solna, 17165, Sweden
| | | | - Jan Johansson
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, 14157, Sweden
| | - Sidong Xiong
- The Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Igor Iashchishyn
- Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, 90187, Sweden
| | - Gefei Chen
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, 14157, Sweden
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5
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Abd-Elbaki MKM, Ragab TM, Ismael NER, Khalil ASG. Robust, self-adhesive and anti-bacterial silk-based LIG electrodes for electrophysiological monitoring. RSC Adv 2023; 13:31704-31719. [PMID: 37908662 PMCID: PMC10613951 DOI: 10.1039/d3ra05730e] [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: 08/22/2023] [Accepted: 10/23/2023] [Indexed: 11/02/2023] Open
Abstract
Flexible wearable electrodes have been extensively used for obtaining electrophysiological signals towards smart health monitoring and disease diagnosis. Here, low-cost, and non-conductive silk fabric (SF) have been processed into highly conductive laser induced graphene (LIG) electrodes while maintaining the original structure of SF. A CO2-pulsed laser was utilized to produce LIG-SF with controlled sheet resistance and mechanical properties. Laser processing of SFs under optimized conditions yielded LIG-SF electrodes with a high degree of homogeneity on both, top and bottom layers. Silk fibroin/Ca2+ adhesive layers effectively promoted the adhesive, anti-bacterial properties and provided a conformal contact of LIG-SF electrodes with human skin. Compared with conventional Ag/AgCl electrodes, LIG-SF electrodes possesses a much lower contact impedance in contact with human skin enabling highly stable electrophysiological signals recording. The applicability of adhesive LIG-SF electrodes to acquire electrocardiogram (ECG) signals was investigated. ECG signals recordings of adhesive LIG-SF electrodes showed excellent performance compared to conventional Ag/AgCl electrodes at intense body movements while running at different speeds for up to 9 km over a duration of 24 h. Therefore, our proposed adhesive LIG-SF electrodes can be applied for long-term personalized healthcare monitoring and sports management applications.
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Affiliation(s)
| | - Tamer Mosaad Ragab
- Department of Cardiology, Faculty of Medicine, Fayoum University 63514 Fayoum Egypt
| | - Naglaa E R Ismael
- Zoology Department, Faculty of Science, Fayoum University 63514 Fayoum Egypt
| | - Ahmed S G Khalil
- Physics Department, Environmental and Smart Technology Group, Faculty of Science, Fayoum University 63514 Fayoum Egypt
- Institute of Basic and Applied Sciences, Faculty of Engineering, Egypt-Japan University of Science and Technology (E-JUST) 179 New Borg El-Arab City Egypt
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Chen N, Jin W, Gao H, Hong J, Sun L, Yao J, Chen X, Chen J, Chen S, Shao Z. Sequential intervention of anti-inflammatory and osteogenesis with silk fibroin coated polyethylene terephthalate artificial ligaments for anterior cruciate ligament reconstruction. J Mater Chem B 2023; 11:8281-8290. [PMID: 37584321 DOI: 10.1039/d3tb00911d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
Graft-host integration after the anterior cruciate ligament (ACL) reconstruction sequentially follows the prognosis from the inflammation period to the regeneration period. However, due to insufficient bioactivity, polyethylene terephthalate (PET) artificial ligaments often require a long period for graft-host integration. To improve graft-host integration, sequential therapy targeting multifactor is widely advocated. In this study, a multilayer regenerated silk fibroin (RSF) coating loaded with heparin and bone morphogenetic protein binding peptide (BBP) for differentiated release was introduced on the surface of the PET artificial ligament by a stepwise deposition method. The drug release profiles of heparin and BBP on the coated PET artificial ligament indicated the features of differential drug release, i.e., with heparin in the outermost layer releasing a significant amount (more than 60%) during the first 5 days while BBP in the inner layer only releasing a small amount (ca. 30%) within 1 week without burst release. Based on the isometric ACL reconstruction model of rabbits, such drug-loaded RSF coating was verified to be able to modulate the early inflammatory response and promote the maturation of the graft in the articular cavity, meanwhile, it provided a continuous and stable signal of osteogenic induction to improve graft-bone integration. Thus, sequential intervention with heparin and BBP proved to be a reliable combination, and multifunctional RSF-coated PET artificial ligaments hold great potential for improving the clinical efficacy of ACL reconstruction.
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Affiliation(s)
- Ni Chen
- State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Advanced Materials and Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
| | - Wenhe Jin
- Sports Medicine Insititute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, 12 Middle Wulumuqi Road, Shanghai, 200040, China.
| | - Han Gao
- Sports Medicine Insititute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, 12 Middle Wulumuqi Road, Shanghai, 200040, China.
| | - Jiachan Hong
- State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Advanced Materials and Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
| | - Luyi Sun
- Sports Medicine Insititute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, 12 Middle Wulumuqi Road, Shanghai, 200040, China.
| | - Jinrong Yao
- State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Advanced Materials and Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
| | - Xin Chen
- State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Advanced Materials and Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
| | - Jun Chen
- Sports Medicine Insititute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, 12 Middle Wulumuqi Road, Shanghai, 200040, China.
| | - Shiyi Chen
- Sports Medicine Insititute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, 12 Middle Wulumuqi Road, Shanghai, 200040, China.
| | - Zhengzhong Shao
- State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Advanced Materials and Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
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Gao Z, Mansor MH, Winder N, Demiral S, Maclnnes J, Zhao X, Muthana M. Microfluidic-Assisted ZIF-Silk-Polydopamine Nanoparticles as Promising Drug Carriers for Breast Cancer Therapy. Pharmaceutics 2023; 15:1811. [PMID: 37513998 PMCID: PMC10384305 DOI: 10.3390/pharmaceutics15071811] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/06/2023] [Accepted: 06/20/2023] [Indexed: 07/30/2023] Open
Abstract
Metal-organic frameworks (MOFs) are heralded as potential nanoplatforms for biomedical applications. Zeolitic imidazolate framework-8 (ZIF-8), as one of the most well known MOFs, has been widely applied as a drug delivery carrier for cancer therapy. However, the application of ZIF-8 nanoparticles as a therapeutic agent has been hindered by the challenge of how to control the release behaviour of anti-cancer zinc ions to cancer cells. In this paper, we designed microfluidic-assisted core-shell ZIF-8 nanoparticles modified with silk fibroin (SF) and polydopamine (PDA) for sustained release of zinc ions and curcumin (CUR) and tested these in vitro in various human breast cancer cells. We report that microfluidic rapid mixing is an efficient method to precisely control the proportion of ZIF-8, SF, PDA, and CUR in the nanoparticles by simply adjusting total flow rates (from 1 to 50 mL/min) and flow rate ratios. Owing to sufficient and rapid mixing during microfluidic-assisted nanoprecipitation, our designer CUR@ZIF-SF-PDA nanoparticles had a desired particle size of 170 nm with a narrow size distribution (PDI: 0.08), which is much smaller than nanoparticles produced using traditional magnetic stirrer mixing method (over 1000 nm). Moreover, a properly coated SF layer successfully enhanced the capability of ZIF-8 as a reservoir of zinc ions. Meanwhile, the self-etching reaction between ZIF-8 and PDA naturally induced a pH-responsive release of zinc ions and CUR to a therapeutic level in the MDA-MB-231, SK-BR-3, and MCF-7 breast cancer cell lines, resulting in a high cellular uptake efficiency, cytotoxicity, and cell cycle arrest. More importantly, the high biocompatibility of designed CUR@ZIF-SF-PDA nanoparticles remained low in cytotoxicity on AD-293 non-cancer cells. We demonstrate the potential of prepared CUR@ZIF-SF-PDA nanoparticles as promising carriers for the controlled release of CUR and zinc ions in breast cancer therapy.
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Affiliation(s)
- Zijian Gao
- Department of Oncology and Metabolism, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, UK
| | - Muhamad Hawari Mansor
- Department of Oncology and Metabolism, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, UK
| | - Natalie Winder
- Department of Oncology and Metabolism, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, UK
| | - Secil Demiral
- Department of Oncology and Metabolism, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, UK
| | - Jordan Maclnnes
- Department of Chemical and Biological Engineering, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, UK
| | - Xiubo Zhao
- Department of Chemical and Biological Engineering, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, UK
- School of Pharmacy, Changzhou University, Changzhou 213164, China
| | - Munitta Muthana
- Department of Oncology and Metabolism, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, UK
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Bari E, Di Gravina GM, Scocozza F, Perteghella S, Frongia B, Tengattini S, Segale L, Torre ML, Conti M. Silk Fibroin Bioink for 3D Printing in Tissue Regeneration: Controlled Release of MSC extracellular Vesicles. Pharmaceutics 2023; 15:pharmaceutics15020383. [PMID: 36839705 PMCID: PMC9959026 DOI: 10.3390/pharmaceutics15020383] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/16/2023] [Accepted: 01/20/2023] [Indexed: 01/24/2023] Open
Abstract
Sodium alginate (SA)-based hydrogels are often employed as bioink for three-dimensional (3D) scaffold bioprinting. They offer a suitable environment for cell proliferation and differentiation during tissue regeneration and also control the release of growth factors and mesenchymal stem cell secretome, which is useful for scaffold biointegration. However, such hydrogels show poor mechanical properties, fast-release kinetics, and low biological performance, hampering their successful clinical application. In this work, silk fibroin (SF), a protein with excellent biomechanical properties frequently used for controlled drug release, was blended with SA to obtain improved bioink and scaffold properties. Firstly, we produced a printable SA solution containing SF capable of the conformational change from Silk I (random coil) to Silk II (β-sheet): this transition is a fundamental condition to improve the scaffold's mechanical properties. Then, the SA-SF blends' printability and shape fidelity were demonstrated, and mechanical characterization of the printed hydrogels was performed: SF significantly increased compressive elastic modulus, while no influence on tensile response was detected. Finally, the release profile of Lyosecretome-a freeze-dried formulation of MSC-secretome containing extracellular vesicles (EV)-from scaffolds was determined: SF not only dramatically slowed the EV release rate, but also modified the kinetics and mechanism release with respect to the baseline of SA hydrogel. Overall, these results lay the foundation for the development of SA-SF bioinks with modulable mechanical and EV-release properties, and their application in 3D scaffold printing.
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Affiliation(s)
- Elia Bari
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2/3, 28100 Novara, Italy
- Correspondence:
| | - Giulia Maria Di Gravina
- Department of Industrial and Information Engineering, University of Pavia, Via Ferrata 5, 27100 Pavia, Italy
| | - Franca Scocozza
- Department of Civil Engineering and Architecture, University of Pavia, Via Ferrata 3, 27100 Pavia, Italy
| | - Sara Perteghella
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
- PharmaExceed s.r.l., Piazza Castello 19, 27100 Pavia, Italy
| | - Benedetta Frongia
- Department of Civil Engineering and Architecture, University of Pavia, Via Ferrata 3, 27100 Pavia, Italy
| | - Sara Tengattini
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Lorena Segale
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2/3, 28100 Novara, Italy
| | - Maria Luisa Torre
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Largo Donegani 2/3, 28100 Novara, Italy
- PharmaExceed s.r.l., Piazza Castello 19, 27100 Pavia, Italy
| | - Michele Conti
- Department of Civil Engineering and Architecture, University of Pavia, Via Ferrata 3, 27100 Pavia, Italy
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Wang XR, Meng ZY, Wang XF, Cai WL, Liu K, Wang D. Silk Nanofibril-Palygorskite Composite Membranes for Efficient Removal of Anionic Dyes. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:247. [PMID: 36678001 PMCID: PMC9864787 DOI: 10.3390/nano13020247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 12/27/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
To develop membrane materials with good performance for water purification that are green and low cost, this work reports an organic-inorganic composite membrane composed of silk nanofibrils (SNFs) and palygorskite (PGS). To improve the stability of the the composite membrane, genipin was used as a crosslinking agent to induce the conformational transition of SNF chains from random coils to β-sheets, reducing the swelling and hydrolysis of the membrane. The separation performance can be adjusted by tailoring the component ratio of the nanomaterial. The results showed that these membranes can effectively remove anionic dyes from water, and they exhibit excellent water permeability. The SNF-based membrane had strong mechanical and separation properties, and the PGS could tune the structure of composite membranes to enhance their permeability, so this green composite membrane has good prospects in water treatment and purification applications.
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Affiliation(s)
- Xu-rui Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Zhe-yi Meng
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Xue-fen Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Wei-long Cai
- Qingyuan Innovation Laboratory, Quanzhou 362801, China
| | - Ke Liu
- Key Laboratory of Textile Fiber and Products, Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials and Application, Wuhan Textile University, Wuhan 430200, China
| | - Dong Wang
- Key Laboratory of Textile Fiber and Products, Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials and Application, Wuhan Textile University, Wuhan 430200, China
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10
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Yu B, Li Y, Lin Y, Zhu Y, Hao T, Wu Y, Sun Z, Yang X, Xu H. Research progress of natural silk fibroin and the appplication for drug delivery in chemotherapies. Front Pharmacol 2023; 13:1071868. [PMID: 36686706 PMCID: PMC9845586 DOI: 10.3389/fphar.2022.1071868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 12/14/2022] [Indexed: 01/05/2023] Open
Abstract
Silk fibroin has been widely used in biological fields due to its biocompatibility, mechanical properties, biodegradability, and safety. Recently, silk fibroin as a drug carrier was developed rapidly and achieved remarkable progress in cancer treatment. The silk fibroin-based delivery system could effectively kill tumor cells without significant side effects and drug resistance. However, few studies have been reported on silk fibroin delivery systems for antitumor therapy. The advancement of silk fibroin-based drug delivery systems research and its applications in cancer therapy are highlighted in this study. The properties, applications, private opinions, and future prospects of silk fibroin carriers are discussed to understand better the development of anti-cancer drug delivery systems, which may also contribute to advancing silk fibroin innovation.
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Affiliation(s)
- Bin Yu
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Yantai University, Yantai, China
| | - Yanli Li
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Yantai University, Yantai, China,Department of Pharmacy, Binzhou Hospital of Traditional Chinese Medicine, Binzhou, China
| | - Yuxian Lin
- Department of Pharmacy, Wenzhou People’s Hospital of The Third Affiliated Hospital of Shanghai University, The Third Clinical Institute Affiliated To Wenzhou Medical University, Wenzhou, China
| | - Yuanying Zhu
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Yantai University, Yantai, China
| | - Teng Hao
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Yantai University, Yantai, China
| | - Yan Wu
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Yantai University, Yantai, China
| | - Zheng Sun
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Yantai University, Yantai, China
| | - Xin Yang
- School of Chemistry and Chemical Engineering, Yantai University, Yantai, China,*Correspondence: Xin Yang, ; Hui Xu,
| | - Hui Xu
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Yantai University, Yantai, China,*Correspondence: Xin Yang, ; Hui Xu,
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11
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Park B, Ramesh SK, Rhee SW, Kim J. Synthesis of hollow fibroin using calcium carbonate as a template. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Byeongho Park
- Department of Chemistry Kongju National University Gongju South Korea
| | - Siva Kumar Ramesh
- Department of Chemistry Kongju National University Gongju South Korea
| | - Seog Woo Rhee
- Department of Chemistry Kongju National University Gongju South Korea
| | - Jinkwon Kim
- Department of Chemistry Kongju National University Gongju South Korea
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12
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Patel M, Singh SP, Dubey DK. In‐silico investigations of dynamic mechanical behavior of
Bombyx mori
silk fibroin nanostructure under cyclic deformations and associated molecular mechanisms. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mrinal Patel
- Mechanical Engineering Department Indian Institute of Technology Delhi New Delhi India
| | - Satinder Paul Singh
- Mechanical Engineering Department Indian Institute of Technology Delhi New Delhi India
| | - Devendra K. Dubey
- Mechanical Engineering Department Indian Institute of Technology Delhi New Delhi India
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13
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Mehdi M, Jiang W, Zeng Q, Thebo KH, Kim IS, Khatri Z, Wang H, Hu J, Zhang KQ. Regenerated Silk Nanofibers for Robust and Cyclic Adsorption-Desorption on Anionic Dyes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:6376-6386. [PMID: 35561306 DOI: 10.1021/acs.langmuir.2c00314] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In recent years, adsorption-based membranes have been widely investigated to remove and separate textile pollutants. However, cyclic adsorption-desorption to reuse a single adsorbent and clear scientific evidence for the adsorption-desorption mechanism remains challenging. Herein, silk nanofibers were used to assess the adsorption potential for the typical anionic dyes from an aqueous medium, and they show great potential toward the removal of acid dyes from the aqueous solution with an adsorption rate of ∼98% in a 1 min interaction. Further, we measured the filtration proficiency of a silk nanofiber membrane in order to propose a continuous mechanism for the removal of acid blue dye, and a complete rejection was observed with a maximum permeability rate of ∼360 ± 5 L·m-2·h-1. The Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy studies demonstrate that this fast adsorption occurs due to multiple interactions between the dye molecule and the adsorbent substrate. The as-prepared material also shows remarkable results in desorption. A 50-time cycle exhibits complete adsorption and desorption ability, which not only facilitates high removal aptitude but also produces less solid waste than other conventional adsorbents. Additionally, fluorescent 2-bromo-2-methyl-propionic acid (abbreviated as EtOxPY)-silk nanofibers can facilitate to illustrate a clear adsorption and desorption mechanism. Therefore, the above-prescribed results make electrospun silk nanofibers a suitable choice for removing anionic dyes in real-time applications.
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Affiliation(s)
- Mujahid Mehdi
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Wangkai Jiang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Qingping Zeng
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Khalid Hussain Thebo
- Institute of Metal Research, Chinese Academy of Sciences, 2 Wenhua Road, Shenyang 110016, China
| | - Ick-Soo Kim
- Nano Fusion Technology Research Group, Division of Frontier Fibers, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Tokida 3-15-1, Ueda, Nagano Prefecture 386-8567, Japan
| | - Zeeshan Khatri
- Center of Excellence in Nanotechnology and Materials, Mehran University of Engineering and Technology, Jamshoro 76060, Pakistan
| | - Huifen Wang
- Shanghai Institute of Spacecraft Equipment, 251 Huaning Road, Minhang, Shanghai 200240, China
| | - Jianchen Hu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Ke-Qin Zhang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
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14
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Lu M, Wu M, Huang Y, Yao J, Shao Z, Chen X. Animal protein-plant protein composite nanospheres for dual-drug loading and synergistic cancer therapy. J Mater Chem B 2022; 10:3798-3807. [PMID: 35416829 DOI: 10.1039/d2tb00368f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The co-delivery of multiple drugs using one drug carrier is a viable strategy to optimize drug dosage and reduce the side effects in chemotherapy. Herein, a hydrophilic animal protein (silk fibroin) and a hydrophobic plant protein (zein) were selected for preparing a composite drug carrier. Adapting our previously developed method for the preparation of regenerated silk fibroin (RSF) nanospheres, we prepared RSF/zein nanospheres that displayed an interesting structure including a single central hole. The particle size of the RSF/zein nanospheres was regulated from 150 to 460 nm by varying the preparation conditions, implying that such a drug carrier is suitable for both intravenous administration and lymphatic chemotherapy. Two anti-cancer drugs with different target sites, paclitaxel (PTX) and curcumin (CUR), were selected for the preparation of dual-drug-loaded CUR/PTX@RSF/zein nanospheres. Both drugs achieved a high loading capacity in the RSF/zein nanospheres, i.e., 8.2% for PTX and 12.1% for CUR. Subsequently, the encapsulated PTX and CUR were released from the RSF/zein nanospheres in a sustained manner for at least 7 days. Importantly, these dual-drug-loaded RSF/zein nanospheres exhibited a considerable synergistic therapeutic effect, showing more efficient suppression of in vitro cancer cell growth than free PTX or CUR, a combination of free PTX and CUR, or single-drug-loaded nanospheres. Therefore, the CUR/PTX@RSF/zein nanospheres developed in this study hold great potential for combination chemotherapy in future clinical applications.
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Affiliation(s)
- Minqi Lu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital & School of Stomatology, Laboratory of Advanced Materials, Fudan University, Shanghai, 200433, People's Republic of China.
| | - Mi Wu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital & School of Stomatology, Laboratory of Advanced Materials, Fudan University, Shanghai, 200433, People's Republic of China.
| | - Yufang Huang
- Department of Materials Science, Fudan University, Shanghai, 200433, People's Republic of China
| | - Jinrong Yao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital & School of Stomatology, Laboratory of Advanced Materials, Fudan University, Shanghai, 200433, People's Republic of China.
| | - Zhengzhong Shao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital & School of Stomatology, Laboratory of Advanced Materials, Fudan University, Shanghai, 200433, People's Republic of China.
| | - Xin Chen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital & School of Stomatology, Laboratory of Advanced Materials, Fudan University, Shanghai, 200433, People's Republic of China.
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15
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Lu X, Sun Y, Han M, Chen D, Wang A, Sun K. Silk fibroin double-layer microneedles for the encapsulation and controlled release of triptorelin. Int J Pharm 2021; 613:121433. [PMID: 34968682 DOI: 10.1016/j.ijpharm.2021.121433] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 12/07/2021] [Accepted: 12/23/2021] [Indexed: 11/27/2022]
Abstract
A double-layer silk fibroin microneedles (SF-MNs) was proposed for the transdermal delivery of triptorelin. Two-step pouring and centrifugation were employed to prepare SF-MNs. Triptorelin was wrapped in MNs in the form of microcrystals with a size of ∼1 μm. β-sheet nanocrystals (the secondary structure of silk fibroin) were adjusted in content by methanol-vapor treatment to manipulate the characteristics of SF-MNs prepared with two concentrations of silk fibroin. The mechanical strength of MNs was measured and analyzed in proportion to the β-sheet content. The triptorelin in MNs could be released sustainedly in phosphate-buffered saline for 168 h, and the release amount decreased with increasing β-sheet content. The Ritger-Peppas equation was employed to fit the release data. A linear decreasing relationship was observed between the diffusion coefficient and increased β-sheet content. After administration to rats, SF-MNs exhibited long-term testosterone inhibition and maintained castration levels for ≥7 d. Manipulable mechanical properties and release behavior combined with biocompatibility and biodegradability render SF-MNs as viable long-term transdermal delivery devices for triptorelin.
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Affiliation(s)
- Xiaoyan Lu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, China
| | - Yiying Sun
- Shandong International Biotechnology Park Development Co., Ltd., Yantai 264670, China
| | - Meishan Han
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, China
| | - Daoyuan Chen
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, China
| | - Aiping Wang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, China
| | - Kaoxiang Sun
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, China.
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16
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Qu J, Feng P, Zhu Q, Ren Y, Li B. Study on the Effect of Stretching on the Strength of Natural Silk Based on Different Feeding Methods. ACS Biomater Sci Eng 2021; 8:100-108. [PMID: 34918508 DOI: 10.1021/acsbiomaterials.1c01256] [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: 12/21/2022]
Abstract
Silk is an important biological protein fiber, which has been widely developed and used in textile and biomedical fields due to its excellent mechanical properties and good biocompatibility. Strength is an important indicator that determines the value and use of silk. Although investigations have been made on the mechanical properties of silkworm silks and their dependence relationship with the microstructures, the variation of silk strength formed in the process of silkworm spinning has not been reported. By feeding the same strain of silkworms with mulberry leaves, mulberry leaves + artificial feed, and artificial feed, silks with three filament sizes were obtained, respectively. The tensile test results showed that the strength and filament size of silk are inversely proportional. The structure and fibrosis process of different-strength silks were analyzed. The results showed that, compared with ordinary silk, the β-sheet and crystallinity content of high-strength silk is higher, indicating that its fibrosis process is more sufficient. We proposed that the stretched degree of silk protein determines its structure and properties. During the spinning process of individual silkworms, the secretion of silk protein is not stable, which will cause changes in the stretched degree. The measurement results of the intraindividual stretched degree and strength verified that the degree of stretch determines the strength of the silk. This study not only provides a deeper understanding of the properties of silk protein but also is of interest for the design and development of advanced biomimetic silk materials.
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Affiliation(s)
- Jianwei Qu
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, P. R. China
| | - Piao Feng
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, P. R. China
| | - Qingyu Zhu
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, P. R. China
| | - Yuying Ren
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, P. R. China
| | - Bing Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, P. R. China.,Sericulture Institute of Soochow University, Suzhou, Jiangsu 215123, P. R. China
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17
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Effect of pH on the Conformational Transition of Silk Fibroin in Aqueous Solution Monitored by Thioflavin-T Fluorescence. J Fluoresc 2021; 32:389-395. [PMID: 34855073 DOI: 10.1007/s10895-021-02841-x] [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: 07/09/2021] [Accepted: 10/20/2021] [Indexed: 10/19/2022]
Abstract
In this work, the potential application of the fluorescence dye Thioflavin-T (ThT), which can specifically bind to amyloid, as a powerful tool for monitoring secondary structural transitions of silk fibroin (SF) induced by pH in low solution concentrations was examined. Results showed that ThT emission intensities substantially increased when pH decreased from 6.8 to 4.8. This increase may be ascribed to conformational transitions from random coil to β-sheet. The morphology and secondary structure of SF were also investigated via TEM, AFM and circular dichroism spectroscopy. The information obtained herein can be utilized not only for the development of convenient and efficient noninvasive method for monitoring the assembly behavior of SF in aqueous solution but also for in vitro fluorescence imaging.
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18
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Shu T, Cui J, Lv Z, Cao L, Ren J, Ling S. Moderate conformational transition promotes the formation of a self-reinforced highly oriented silk fibroin network structure. SOFT MATTER 2021; 17:9576-9586. [PMID: 34642721 DOI: 10.1039/d1sm01120k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A highly oriented molecular network structure (HOMNS) is a common and favorable design in natural and regenerated silks to achieve self-reinforcement of the material. However, the fundamental issues related to the formation of the HOMNS in silk fibroin materials and its influence on mechanical performance have not yet been addressed. By combining experimental characterization and molecular dynamics simulation, this work revealed that moderate conformational transition of silk fibroin promoted the formation of a low-density crosslinking molecular network among proteins. Such a molecular network is beneficial to further rearrangement of amorphous proteins in subsequent processing to form HOMNS. Here, a structure was confirmed that can strengthen the materials several times compared with the same material without HOMNS. These investigations improved the in-depth understanding of the fundamental questions related to the silk fibroin assembly, revealed their crucial structural remodeling, and paved the way for new fabrication strategies of mechanical-enhanced silk fibroin materials.
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Affiliation(s)
- Ting Shu
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China.
| | - Jing Cui
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China.
| | - Zhuochen Lv
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China.
| | - Leitao Cao
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China.
| | - Jing Ren
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China.
| | - Shengjie Ling
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China.
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19
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Xu X, Ren Z, Zhang M, Ma L. Enzymatic degradability and release properties of graphene oxide/silk fibroin nanocomposite films. J Appl Polym Sci 2021. [DOI: 10.1002/app.51173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiafan Xu
- School of Chemistry and Chemical Engineering Guangxi University Nanning P. R. China
| | - Zilong Ren
- School of Chemistry and Chemical Engineering Guangxi University Nanning P. R. China
| | - Meiqi Zhang
- School of Chemistry and Chemical Engineering Guangxi University Nanning P. R. China
| | - Lin Ma
- School of Chemistry and Chemical Engineering Guangxi University Nanning P. R. China
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20
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Lan D, Liu Z, Zhou J, Xu M, Li Z, Dai F. Preparation and characterization of silk fibroin/polyethylene oxide nanofiber membranes with antibacterial activity. J Biomed Mater Res A 2021; 110:287-297. [PMID: 34369644 DOI: 10.1002/jbm.a.37285] [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: 07/27/2020] [Revised: 07/17/2021] [Accepted: 07/21/2021] [Indexed: 01/13/2023]
Abstract
Bacterial infection is among the most common diseases that threaten human health. Antibiotics are effective in treating bacterial infections. However, the overuse of antibiotics will lead to an increase in bacterial resistance. To reduce the overuse of antibiotics and improve the effective use of antibiotics through slow release, silk fibroin (SF)/polyethylene oxide (PEO) nanofiber membranes with different SF and PEO proportions were prepared by electrospinning. The ecofriendly solvent ethanol solution was used for electrospinning for better protection of antibiotic activity. The SEM showed that the surface of SF/PEO (2:8) and SF/PEO (3:7) was smoother and more uniform. With the increase of SF content, the thermal stability and hydrophilicity of SF/PEO nanofiber membranes were improved. The SF/PEO (3:7) nanofiber membrane had the best mechanical property and its maximum stress and strain were 4.6 1 ± 0.24 MPa and 16.36 ± 0.41%, respectively. Based on these good properties, SF/PEO (3:7) nanofiber membrane was chosen for loading and releasing gentamicin sulfate (GS). The fabricated (GS)/SF/PEO (3:7) nanofiber membrane exhibited good release efficiency and showed the good antibacterial activity against Staphylococcus aureus and Escherichia coli. These investigations indicated the GS/SF/PEO (3:7) nanofiber membrane (GS/SF/PEO) has a great potential for application in antibacterial materials.
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Affiliation(s)
- Dongwei Lan
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China.,Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of sericulture, textile and biomass sciences, Southwest University, Chongqing, China
| | - Zulan Liu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China.,Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of sericulture, textile and biomass sciences, Southwest University, Chongqing, China
| | - Jiale Zhou
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China.,Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of sericulture, textile and biomass sciences, Southwest University, Chongqing, China
| | - Mengting Xu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China.,Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of sericulture, textile and biomass sciences, Southwest University, Chongqing, China
| | - Zhi Li
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China.,Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of sericulture, textile and biomass sciences, Southwest University, Chongqing, China
| | - Fangyin Dai
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China.,Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of sericulture, textile and biomass sciences, Southwest University, Chongqing, China.,Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing, China
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21
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Prakash NJ, Mane PP, George SM, Kandasubramanian B. Silk Fibroin As an Immobilization Matrix for Sensing Applications. ACS Biomater Sci Eng 2021; 7:2015-2042. [PMID: 33861079 DOI: 10.1021/acsbiomaterials.1c00080] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The development of flexible, biocompatible, and environment-friendly sensors has attracted a significant amount of scientific interest for the past few decades. Among all the natural materials, silk fibroin (SF), due to its tunable biodegradability, biocompatibility, ease of processing, presence of functional groups, and controllable dimensions, has opened up opportunities for immobilizing multitudinous biomolecules and conformability to the skin, among other attractive opportunities. The silk fibroins also offer good physical properties, such as superior toughness and tensile strength. The sensors made of SF as an immobilization matrix have demonstrated excellent analytical performance, sensing even at low concentrations. The significant advantage of silk fibroins is the presence of functional groups along with a controllable conformation transition that enables immobilization of receptor molecules using silk fibroins as an immobilization matrix enables us to entrap the receptor molecules without using any chemical reagents. This review encompasses a detailed discussion on sensors, the advantages of using silk fibroins as an immobilization matrix for various receptors, their applications, and the future research scope in this state-of-the-art technology based upon the explorable applications for silk fibroin-based sensors.
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Affiliation(s)
- Niranjana Jaya Prakash
- Nano Texturing Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology (DU), Ministry of Defence, Girinagar, Pune-411025, Maharashtra, India
| | - Prathamesh Parshuram Mane
- Department of Fibers and Textiles Processing Technology, Institute of Chemical Technology, Mumbai-400019, India
| | - Suchi Mercy George
- Nano Texturing Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology (DU), Ministry of Defence, Girinagar, Pune-411025, Maharashtra, India
| | - Balasubramanian Kandasubramanian
- Nano Texturing Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology (DU), Ministry of Defence, Girinagar, Pune-411025, Maharashtra, India
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22
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Lv Z, Shu T, Ren J, Cao L, Pei Y, Shao Z, Ling S. Mechanism of Mechanical Training-Induced Self-Reinforced Viscoelastic Behavior of Highly Hydrated Silk Materials. Biomacromolecules 2021; 22:2189-2196. [PMID: 33852291 DOI: 10.1021/acs.biomac.1c00263] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Mechanical training is an operation where a sample is cyclically stretched in a solvent. It is accepted as an effective strategy to strengthen and stiffen the highly hydrated silk materials (HHSMs). However, the detailed reinforcement mechanism of the process still remains to be understood. Herein, this process is studied by the integration of experimental characterization and theoretical analysis. The results from time-resolved Fourier transform infrared spectroscopy and real-time birefringent characterization reveal that the silk proteins rapidly formed a molecular cross-linking network (MCN) during the mechanical training. The cross-links were the β-sheet nanocrystals generated from the conformation transition of silk proteins. With the progress in mechanical training, these MCNs gradually remodeled to a highly oriented molecular network structure. The final structure of the silk proteins in HHSMs is highly similar to the structural organization of silk proteins in the natural animal silk. The training process significantly improved the mechanical strength and modulus of the material. With regards to the dynamic behavior of conformation transition and MCN orientation, the structural evaluation of silk proteins during mechanical training was divided into three distinct stages, namely, the MCN-forming stage, MCN-orienting stage, and oriented-MCN stage. Such division is in complete agreement with the three-stage viscoelastic behavior observed in the cyclic loading and unloading tests. Hence, a five-parameter viscoelastic model has been established to elucidate the structure-property relationship of these three stages. This work improves in-depth understanding of the fundamental issues related to structure-property relationships of HHSMs and thus provides inspiration and guidance in the design of soft silk functional materials.
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Affiliation(s)
- Zhuochen Lv
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
| | - Ting Shu
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
| | - Jing Ren
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
| | - Leitao Cao
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
| | - Ying Pei
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Zhengzhong Shao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, China
| | - Shengjie Ling
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
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23
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Li F, Wang X, Chen L, Li Z, Zhang T, Wang T. Efficient development of silk fibroin membranes on liquid surface for potential use in biomedical materials. Int J Biol Macromol 2021; 182:237-243. [PMID: 33836192 DOI: 10.1016/j.ijbiomac.2021.04.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/22/2021] [Accepted: 04/03/2021] [Indexed: 01/11/2023]
Abstract
Silk fibroin (SF) protein is versatile for the application of biomaterials due to its excellent mechanical properties, biocompatibility and biodegradability. However, the efficient way to fabricate SF membranes with special structure is still challenging. Here, we develop an efficient and simple way to create SF membranes on the liquid (i.e. subphase) surface. It is essential to prepare highly concentrated SF solution with low surface tension by dissolving the degummed SF powders in 6% (w/v) LiBr/methanol solution by one step. 95 wt% polyethylene glycol (PEG) 200 and 30 wt% (NH4)2SO4 are the subphases, on which the SF solution spreads quickly, generating nonporous and microporous SF membranes (SFM-1 and SFM-2), respectively. PEG 200 causes more ordered molecular packing (β-sheets) in SFM-1. While Fast diffusion and denaturation of SF on (NH4)2SO4 solution lead to the formation of microporous, water-unstable membrane SFM-2. Both membranes have good transparency, hydrophilicty, and mechanical properties. To fabricate antibacterial biomaterials, we design a composite membrane by SFM-1 and SFM-2 sandwiching a layer of hydroxypropyl trimethylammonium chloride chitosan (HACC) to provide antibacterial functions. The sandwich membrane has good cell viability and antibacterial properties, showing potential use for biomedical materials.
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Affiliation(s)
- Fei Li
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Xin Wang
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Lei Chen
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China; SKL of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China.
| | - Zhi Li
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Tonghua Zhang
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China
| | - Tao Wang
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing 400715, China.
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24
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Shu T, Zheng K, Zhang Z, Ren J, Wang Z, Pei Y, Yeo J, Gu GX, Ling S. Birefringent Silk Fibroin Hydrogel Constructed via Binary Solvent-Exchange-Induced Self-Assembly. Biomacromolecules 2021; 22:1955-1965. [PMID: 33646768 DOI: 10.1021/acs.biomac.1c00065] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Birefringent hydrogels have a strong potential for applications in biomedicine and optics as they can modulate the optical and mechanical anisotropy in confined two-dimensional geometries. However, production of birefringent hydrogels with hierarchical structures, mechanical properties, and biorelated behavior that are analogous to biological tissues is still challenging. Starting from the silk fibroin (SF)-ionic liquid solution system, this study aimed to rationally design a "binary solvent-exchange-induced self-assembly (BSEISA)" strategy to produce birefringent SF hydrogels (SFHs). In this method, the conformational transition rate of SF can be effectively controlled by the exchange rate of the binary solvents. Therefore, this method provides the possibility of controlling the conformation and orientation of SF. Molecular simulations confirmed that methanol is more effective in driving β-sheet formation than other often used solvents, such as formic acid and water. The formed β-sheets act as the physical cross-links that connect disparate protein chains, thereby forming continuous and stable three-dimensional (3D) hydrogel networks. The resultant BSEISA-SFHs are transparent and birefringent with mechanical characteristics similar to those of soft biological tissues, such as lens and cartilage. Interestingly, our results revealed that the evolution of experimental birefringent fringes perfectly matched the changes in stress distribution predicted using finite element analysis. Owing to the unique birefringence of BSEISA-SFHs, together with the advantages in mechanical performance, these hydrogels are anticipated to act as good tissue surrogates for understanding the mechanical response of biological tissues.
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Affiliation(s)
- Ting Shu
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
| | - Ke Zheng
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China.,Biomass Molecular Engineering Center and Department of Materials Science and Engineering, School of Forestry and Landscape Architecture, Anhui Agricultural University, 130 West Changjiang Road, Hefei, Anhui 230036, China
| | - Zhizhou Zhang
- Department of Mechanical Engineering, University of California, Berkeley, California 94720, United States
| | - Jing Ren
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
| | - Zhengjun Wang
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
| | - Ying Pei
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Jingjie Yeo
- J2 Lab for Engineering Living Materials, Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Grace X Gu
- Department of Mechanical Engineering, University of California, Berkeley, California 94720, United States
| | - Shengjie Ling
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
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25
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Lee S, Kim SH, Jo Y, Ju W, Kim H, Kweon H. Conformation Transition Kinetics of Silk Fibroin in Aqueous Solution Explored Using Circular Dichroism Spectroscopy. ChemistrySelect 2021. [DOI: 10.1002/slct.202004180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sora Lee
- Sericultural and Apicultural Materials Division National Institute of Agricultural Science, RDA Wanju-gun 55365, Republic of Korea
| | - Soo Hyun Kim
- Sericultural and Apicultural Materials Division National Institute of Agricultural Science, RDA Wanju-gun 55365, Republic of Korea
| | - You‐Young Jo
- Sericultural and Apicultural Materials Division National Institute of Agricultural Science, RDA Wanju-gun 55365, Republic of Korea
| | - Wan‐Taek Ju
- Sericultural and Apicultural Materials Division National Institute of Agricultural Science, RDA Wanju-gun 55365, Republic of Korea
| | - Hyun‐Bok Kim
- Sericultural and Apicultural Materials Division National Institute of Agricultural Science, RDA Wanju-gun 55365, Republic of Korea
| | - HaeYong Kweon
- Sericultural and Apicultural Materials Division National Institute of Agricultural Science, RDA Wanju-gun 55365, Republic of Korea
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26
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Zhang X, Ries ME, Hine PJ. Time-Temperature Superposition of the Dissolution of Silk Fibers in the Ionic Liquid 1-Ethyl-3-methylimidazolium Acetate. Biomacromolecules 2021; 22:1091-1101. [PMID: 33560832 DOI: 10.1021/acs.biomac.0c01467] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This study investigated the dissolution of silk multifilament fibers in the ionic liquid 1-ethyl-3-methylimidazolium acetate. The dissolution process was found to create a silk composite fiber, comprising undissolved silk multifilaments surrounded by a coagulated silk matrix. The dissolution procedure was carried out for a range of temperatures and times. The resulting composite fibers were studied using a combination of optical microscopy, wide-angle X-ray diffraction (XRD), and tensile testing. An azimuthal (α) XRD scan enabled the orientation of the composite silk filaments to be quantified through a second Legendre polynomial function (P2). The P2 results could be shifted to construct a single master curve using time-temperature superposition (TTS). The shifting factors were found to have an Arrhenius behavior with an activation energy of 138 ± 13 kJ/mol. Using a simple rule of mixtures, the P2 measurements were used to calculate the dissolved silk matrix volume fraction (Vm), which also displayed TTS forming a single master curve with an activation energy of 139 ± 15 kJ/mol. The tensile Young's modulus of each silk composite filament was measured, and these results similarly formed a master curve with an activation energy of 116 ± 12 kJ/mol.
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Affiliation(s)
- Xin Zhang
- Soft Matter Physics Research Group, School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Michael E Ries
- Soft Matter Physics Research Group, School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Peter J Hine
- Soft Matter Physics Research Group, School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom
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27
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Pierantoni L, Ribeiro VP, Costa L, Pina S, da Silva Morais A, Silva-Correia J, Kundu SC, Motta A, Reis RL, Oliveira JM. Horseradish Peroxidase-Crosslinked Calcium-Containing Silk Fibroin Hydrogels as Artificial Matrices for Bone Cancer Research. Macromol Biosci 2021; 21:e2000425. [PMID: 33522095 DOI: 10.1002/mabi.202000425] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/08/2021] [Indexed: 12/11/2022]
Abstract
Hydrogels, being capable of mimicking the extracellular matrix composition of tissues, are greatly used as artificial matrices in tissue engineering applications. In this study, the generation of horseradish peroxidase (HRP)-crosslinked silk fibroin (SF) hydrogels, using calcium peroxide as oxidizer is reported. The proposed fast forming calcium-containing SF hydrogels spontaneously undergo SF conformational changes from random coil to β-sheet during time, exhibiting ionic, and pH stimuli responsiveness. In vitro response shows calcium-containing SF hydrogels' encapsulation properties and their ability to promote SaOs-2 tumor cells death after 10 days of culturing, upon complete β-sheet conformation transition. Calcium-containing SF hydrogels' angiogenic potential investigated in an in ovo chick chorioallantoic membrane (CAM) assay, show a high number of converging blood vessels as compared to the negative control, although no endothelial cells infiltration is observed. The in vivo response evaluated in subcutaneous implantation in CD1 and nude NCD1 mice shows that calcium-containing SF hydrogels are stable up to 6 weeks after implantation. However, an increased number of dead cells are also present in the surrounding tissue. The results suggest the potential of calcium-containing SF hydrogels to be used as novel in situ therapeutics for bone cancer treatment applications, particularly to osteosarcoma.
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Affiliation(s)
- Lara Pierantoni
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, Barco, Guimarães, 4805-017, Portugal.,ICVS/3B's - PT Government Associated Laboratory, Braga/, Guimarães, Portugal
| | - Viviana P Ribeiro
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, Barco, Guimarães, 4805-017, Portugal.,ICVS/3B's - PT Government Associated Laboratory, Braga/, Guimarães, Portugal
| | - Lígia Costa
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, Barco, Guimarães, 4805-017, Portugal.,ICVS/3B's - PT Government Associated Laboratory, Braga/, Guimarães, Portugal
| | - Sandra Pina
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, Barco, Guimarães, 4805-017, Portugal.,ICVS/3B's - PT Government Associated Laboratory, Braga/, Guimarães, Portugal
| | - Alain da Silva Morais
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, Barco, Guimarães, 4805-017, Portugal.,ICVS/3B's - PT Government Associated Laboratory, Braga/, Guimarães, Portugal
| | - Joana Silva-Correia
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, Barco, Guimarães, 4805-017, Portugal.,ICVS/3B's - PT Government Associated Laboratory, Braga/, Guimarães, Portugal
| | - Subhas C Kundu
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, Barco, Guimarães, 4805-017, Portugal.,ICVS/3B's - PT Government Associated Laboratory, Braga/, Guimarães, Portugal
| | - Antonella Motta
- Department of Industrial Engineering, and BIOtech Research Center, University of Trento, Trento, 38123, Italy.,European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Trento Unit, Trento, 38123, Italy
| | - Rui L Reis
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, Barco, Guimarães, 4805-017, Portugal.,ICVS/3B's - PT Government Associated Laboratory, Braga/, Guimarães, Portugal
| | - Joaquim M Oliveira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Zona Industrial da Gandra, Barco, Guimarães, 4805-017, Portugal.,ICVS/3B's - PT Government Associated Laboratory, Braga/, Guimarães, Portugal
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28
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Zhang C, Wang X, Fan S, Lan P, Cao C, Zhang Y. Silk fibroin/reduced graphene oxide composite mats with enhanced mechanical properties and conductivity for tissue engineering. Colloids Surf B Biointerfaces 2021; 197:111444. [DOI: 10.1016/j.colsurfb.2020.111444] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/15/2020] [Accepted: 10/28/2020] [Indexed: 12/24/2022]
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29
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Xiao Y, Liu Y, Zhang W, Qi P, Ren J, Pei Y, Ling S. Formation, Structure, and Mechanical Performance of Silk Nanofibrils Produced by Heat-Induced Self-Assembly. Macromol Rapid Commun 2020; 42:e2000435. [PMID: 33196127 DOI: 10.1002/marc.202000435] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/29/2020] [Indexed: 12/25/2022]
Abstract
The heat-induced self-assembly of silk fibroin (SF) is studied by combing fluorescence assessment, infrared nanospectroscopy, wide-angle X-ray scattering, and Derjaguin-Muller-Toporov coupled with atomic force microscopy. Several fundamental issues regarding the formation, structure, and mechanical performance of silk nanofibrils (SNFs) under heat-induced self-assembly are discussed. Accordingly, SF in aqueous solution is rod-like in shape and not micellar. The formation of SNFs occurs through nucleation-dependent aggregation, but the assembly period is variable and irregular. SF shows inherent fractal growth, and this trend is critical for the short-term assembly. The long-term assembly of SF, however, mainly involves an elongation growth process. SNFs produced by different methods, such as ethanol treatment and heat incubation, have similar secondary structure and mechanical properties. These investigations improve the in-depth understanding of fundamental issues related to self-assembly of SNFs, and thus provide inspiration and guidance in designing of silk nanomaterials.
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Affiliation(s)
- Yuelong Xiao
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Yawen Liu
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China
| | - Wenwen Zhang
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China
| | - Ping Qi
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China
| | - Jing Ren
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China
| | - Ying Pei
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Shengjie Ling
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China
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30
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Qu J, Dai M, Ye W, Fang Y, Bian D, Su W, Li F, Sun H, Wei J, Li B. Study on the effect of graphene oxide (GO) feeding on silk properties based on segmented precise measurement. J Mech Behav Biomed Mater 2020; 113:104147. [PMID: 33096450 DOI: 10.1016/j.jmbbm.2020.104147] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/24/2020] [Accepted: 10/14/2020] [Indexed: 11/18/2022]
Abstract
Silk is widely used in the biomedical field (e.g., surgical sutures) for its excellent mechanical properties and biocompatibility. The properties of silk can be further enhanced by a multitude of methods, including nano particle feeding, which is convenient and green. Generally, the filament length of a silkworm cocoon ranges from 1300 to 1700 m. Despite the fact that the filament size, a key factor affecting the mechanical properties of silk, varies along the length, evaluation of strengthened silk by segment and the specific distribution along the length has not been reported. Therefore, in the present study, we fed silkworms with graphene oxide-sprayed mulberry leaves and evaluated the silk properties segment by segment. The silk's strength and elongation were significantly enhanced, with more α-helical/random coils and thicker mesophase regions. Specifically, the silk from 2‰ GO-treated group had higher strength in the first 60% of the length, whereas the silk from 1‰ GO-treated group was stronger in the last 40% of the length. Notably, the silk from 1‰ GO-treated group had the highest strength and Young's modulus in the last 20% of the length, indicating that this segment is more suitable for use as a surgical suture. Our findings demonstrate that different silk segments offer a great range of desirable assets, and the feasibility to select a specific segment with the desired properties for a specific application.
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Affiliation(s)
- Jianwei Qu
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - Minli Dai
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - Wentao Ye
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - Yilong Fang
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - Dandan Bian
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - Wujie Su
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - Fanchi Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - Haina Sun
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - Jing Wei
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China
| | - Bing Li
- School of Basic Medicine and Biological Sciences, Soochow University, Suzhou, Jiangsu 215123, PR China; Sericulture Institute of Soochow University, Suzhou, Jiangsu 215123, PR China.
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31
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Dunderdale GJ, Davidson SJ, Ryan AJ, Mykhaylyk OO. Flow-induced crystallisation of polymers from aqueous solution. Nat Commun 2020; 11:3372. [PMID: 32632091 PMCID: PMC7338548 DOI: 10.1038/s41467-020-17167-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 06/16/2020] [Indexed: 11/21/2022] Open
Abstract
Synthetic polymers are thoroughly embedded in the modern society and their consumption grows annually. Efficient routes to their production and processing have never been more important. In this respect, silk protein fibrillation is superior to conventional polymer processing, not only by achieving outstanding physical properties of materials, such as high tensile strength and toughness, but also improved process energy efficiency. Natural silk solidifies in response to flow of the liquid using conformation-dependent intermolecular interactions to desolvate (denature) protein chains. This mechanism is reproduced here by an aqueous poly(ethylene oxide) (PEO) solution, which solidifies at ambient conditions when subjected to flow. The transition requires that an energy threshold is exceeded by the flow conditions, which disrupts a protective hydration shell around polymer molecules, releasing them from a metastable state into the thermodynamically favoured crystalline state. This mechanism requires vastly lower energy inputs and demonstrates an alternative route for polymer processing.
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Affiliation(s)
- Gary J Dunderdale
- Department of Chemistry, The University of Sheffield, Sheffield, S3 7HF, UK
| | - Sarah J Davidson
- Department of Chemistry, The University of Sheffield, Sheffield, S3 7HF, UK
- Croda International Plc, Snaith, Goole, DN14 9AA, UK
| | - Anthony J Ryan
- Department of Chemistry, The University of Sheffield, Sheffield, S3 7HF, UK
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32
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Anh Tuan H, Hirai S, Inoue S, A. H. Mohammed A, Akioka S, Ngo Trinh T. Fabrication of Silk Resin with High Bending Properties by Hot-Pressing and Subsequent Hot-Rolling. MATERIALS 2020; 13:ma13122716. [PMID: 32549228 PMCID: PMC7345461 DOI: 10.3390/ma13122716] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 04/23/2020] [Accepted: 04/28/2020] [Indexed: 02/01/2023]
Abstract
This research reports the processability and mechanical properties of silk resins prepared by hot-pressing followed by hot-rolling and then analyzes their thermal and structural properties. The results show that regenerated silk (RS) resins are better suited for hot-rolling than Eri and Bombyx mori silk resins (untreated silk). When hot-rolling at 160 °C with a 50% of reduction ratio, maximum bending strength and Young’s modulus of RS resin reaches 192 MPa and 10.2 GPa, respectively, after pretreatment by immersion in 40 vol% ethanol, and 229 MPa and 12.5 GPa, respectively, after pretreatment by immersion in boiling water. Increased strength of the material is attributed to the increased content of aggregated strands and intramolecular linking of β sheets (attenuated total reflectance Fourier-transform infrared spectroscopy) and higher crystallinity (X-ray diffraction analysis). After hot-pressing and hot-rolling, RS resins have a stable decomposition temperature (297 °C).
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Affiliation(s)
- Hoang Anh Tuan
- Research Center for Environmentally Friendly Materials Engineering, Muroran Institute of Technology, 27–1 Mizumoto, Muroran 050–8585, Japan; (S.I.); (A.A.H.M.); (S.A.)
- Technology and Alloys of casting Department, Research Institute of Technology for Machinery, Vietnam Engine and Agricultural Machinery Corporation-Joint Stock Company, No 25 Vu Ngoc Phan, Hanoi 100000, Vietnam
- Correspondence: (H.A.T.); (S.H.)
| | - Shinji Hirai
- Research Center for Environmentally Friendly Materials Engineering, Muroran Institute of Technology, 27–1 Mizumoto, Muroran 050–8585, Japan; (S.I.); (A.A.H.M.); (S.A.)
- Correspondence: (H.A.T.); (S.H.)
| | - Shota Inoue
- Research Center for Environmentally Friendly Materials Engineering, Muroran Institute of Technology, 27–1 Mizumoto, Muroran 050–8585, Japan; (S.I.); (A.A.H.M.); (S.A.)
| | - Alharbi A. H. Mohammed
- Research Center for Environmentally Friendly Materials Engineering, Muroran Institute of Technology, 27–1 Mizumoto, Muroran 050–8585, Japan; (S.I.); (A.A.H.M.); (S.A.)
| | - Shota Akioka
- Research Center for Environmentally Friendly Materials Engineering, Muroran Institute of Technology, 27–1 Mizumoto, Muroran 050–8585, Japan; (S.I.); (A.A.H.M.); (S.A.)
| | - Tung Ngo Trinh
- Function Polymers and Nano Materials Laboratory, Institute of Chemistry, Vietnam Academy of Science and Technology, No.08 Hoang Quoc Viet, Hanoi 100000, Vietnam;
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33
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Solomun JI, Totten JD, Wongpinyochit T, Florence AJ, Seib FP. Manual Versus Microfluidic-Assisted Nanoparticle Manufacture: Impact of Silk Fibroin Stock on Nanoparticle Characteristics. ACS Biomater Sci Eng 2020; 6:2796-2804. [PMID: 32582839 PMCID: PMC7304816 DOI: 10.1021/acsbiomaterials.0c00202] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 04/06/2020] [Indexed: 01/06/2023]
Abstract
Silk has a long track record of clinical use in the human body, and new formulations, including silk nanoparticles, continue to reveal the promise of this natural biopolymer for healthcare applications. Native silk fibroin can be isolated directly from the silk gland, but generating sufficient material for routine studies is difficult. Consequently, silk fibroin, typically extracted from cocoons, serves as the source for nanoparticle formation. This silk requires extensive processing (e.g., degumming, dissolution, etc.) to yield a hypoallergenic aqueous silk stock, but the impact of processing on nanoparticle production and characteristics is largely unknown. Here, manual and microfluidic-assisted silk nanoparticle manufacturing from 60- and 90-min degummed silk yielded consistent particle sizes (100.9-114.1 nm) with low polydispersity. However, the zeta potential was significantly lower (P < 0.05) for microfluidic-manufactured nanoparticles (-28 to -29 mV) than for manually produced nanoparticles (-39 to -43 mV). Molecular weight analysis showed a nanoparticle composition similar to that of the silk fibroin starting stock. Reducing the molecular weight of silk fibroin reduced the particle size for degumming times ≤30 min, whereas increasing the molecular weight polydispersity improved the nanoparticle homogeneity. Prolonged degumming (>30 min) had no significant effect on particle attributes. Overall, the results showed that silk fibroin processing directly impacts nanoparticle characteristics.
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Affiliation(s)
- Jana I. Solomun
- Strathclyde
Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, G4 0RE Glasgow, U.K.
- Jena
Center for Soft Matter (JCSM), Friedrich-Schiller-University, Philosophenweg 7, 07743 Jena, Germany
| | - John D. Totten
- Strathclyde
Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, G4 0RE Glasgow, U.K.
- EPSRC
Future Manufacturing Research Hub for Continuous Manufacturing and
Advanced Crystallisation (CMAC), University
of Strathclyde, Technology and Innovation Centre, 99 George Street, G1 1RD Glasgow, U.K.
| | - Thidarat Wongpinyochit
- Strathclyde
Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, G4 0RE Glasgow, U.K.
| | - Alastair J. Florence
- Strathclyde
Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, G4 0RE Glasgow, U.K.
- EPSRC
Future Manufacturing Research Hub for Continuous Manufacturing and
Advanced Crystallisation (CMAC), University
of Strathclyde, Technology and Innovation Centre, 99 George Street, G1 1RD Glasgow, U.K.
| | - F. Philipp Seib
- Strathclyde
Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, G4 0RE Glasgow, U.K.
- EPSRC
Future Manufacturing Research Hub for Continuous Manufacturing and
Advanced Crystallisation (CMAC), University
of Strathclyde, Technology and Innovation Centre, 99 George Street, G1 1RD Glasgow, U.K.
- Leibniz
Institute of Polymer Research Dresden, Max
Bergmann Center of Biomaterials Dresden, Hohe Strasse 6, 01069 Dresden, Germany
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Patel M, Dubey DK, Singh SP. Phenomenological models of Bombyx mori silk fibroin and their mechanical behavior using molecular dynamics simulations. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 108:110414. [DOI: 10.1016/j.msec.2019.110414] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 10/31/2019] [Accepted: 11/07/2019] [Indexed: 11/26/2022]
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Xiao M, Lv S. Self-Assembled Regenerated Silk Fibroin Microsphere-Embedded Fe 3O 4 Magnetic Nanoparticles for Immobilization of Zymolyase. ACS OMEGA 2019; 4:21612-21619. [PMID: 31867558 PMCID: PMC6921612 DOI: 10.1021/acsomega.9b03491] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 11/20/2019] [Indexed: 05/17/2023]
Abstract
Cytoplasm of Saccharomyces cerevisiae yeast cells contains a significant amount of desired intracellular products for both industrial utility and academic research. To recover intracellular compounds, it is necessary to break the yeast cells with high efficiency, which, under certain circumstances, requires the use of the lytic enzyme zymolyase to completely digest the cell walls. A promising strategy for zymolyase immobilization on silk fibroin (SF) was developed. SF/Fe3O4 magnetic microspheres (MMs) were constructed by solvent (ethanol)-induced self-assembly of SF surrounding Fe3O4 magnetic nanoparticles (MNs), which were synthesized by a coprecipitation method. Zymolyase was covalently bonded on the surface of the SF/Fe3O4 MMs by a photochemical cross-linking method to produce robust biocatalysts of zymolyase/SF/Fe3O4. The chemical, magnetic, and morphological properties of the MM supports and the immobilized zymolyase were investigated. Enzymolysis results demonstrated that the immobilized zymolyase showed good activity and stability for digesting yeast cell walls, and the biocatalyst can be readily recycled through convenient magnetic separation for reuse. At the optimum pH = 7.5, the immobilized zymolyase maintained 84% of the activity of the free zymolyase and retained 41% of its initial activity after four times of reuse. At unfavorable acidic pH = 4, the immobilized zymolyase retained 81% of its initial activity, while the free zymolyase showed no significant activity. Consequently, the SF/Fe3O4 MMs exhibit superior performance in terms of immobilizing enzymes, which have a good prospect in the biological application.
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Affiliation(s)
- Menglin Xiao
- State Key Laboratory of Organic-Inorganic
Composite Materials, Beijing University
of Chemical Technology, 15 BeisanhuanDong Road, Chaoyang District, Beijing 100029, China
| | - Shanshan Lv
- State Key Laboratory of Organic-Inorganic
Composite Materials, Beijing University
of Chemical Technology, 15 BeisanhuanDong Road, Chaoyang District, Beijing 100029, China
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36
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Qiu W, Patil A, Hu F, Liu XY. Hierarchical Structure of Silk Materials Versus Mechanical Performance and Mesoscopic Engineering Principles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1903948. [PMID: 31657136 DOI: 10.1002/smll.201903948] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 09/27/2019] [Indexed: 05/21/2023]
Abstract
A comprehensive review on the five levels of hierarchical structures of silk materials and the correlation with macroscopic properties/performance of the silk materials, that is, the toughness, strain-stiffening, etc., is presented. It follows that the crystalline binding force turns out to be very important in the stabilization of silk materials, while the β-crystallite networks or nanofibrils and the interactions among helical nanofibrils are two of the most essential structural elements, which to a large extent determine the macroscopic performance of various forms of silk materials. In this context, the characteristic structural factors such as the orientation, size, and density of β-crystallites are very crucial. It is revealed that the formation of these structural elements is mainly controlled by the intermolecular nucleation of β-crystallites. Consequently, the rational design and reconstruction of silk materials can be implemented by controlling the molecular nucleation via applying sheering force and seeding (i.e., with carbon nanotubes). In general, the knowledge of the correlation between hierarchical structures and performance provides an understanding of the structural reasons behind the fascinating behaviors of silk materials.
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Affiliation(s)
- Wu Qiu
- Research Institution for Biomimetics and Soft Matter, Fujian Key Provincial Laboratory for Soft Functional Materials Research, College of Physical Science and Technology & College of Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Aniruddha Patil
- Research Institution for Biomimetics and Soft Matter, Fujian Key Provincial Laboratory for Soft Functional Materials Research, College of Physical Science and Technology & College of Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Fan Hu
- Research Institution for Biomimetics and Soft Matter, Fujian Key Provincial Laboratory for Soft Functional Materials Research, College of Physical Science and Technology & College of Materials, Xiamen University, Xiamen, 361005, P. R. China
- Advanced Soft Matter Group, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, Delft, 2629 HZ, The Netherlands
| | - Xiang Yang Liu
- Research Institution for Biomimetics and Soft Matter, Fujian Key Provincial Laboratory for Soft Functional Materials Research, College of Physical Science and Technology & College of Materials, Xiamen University, Xiamen, 361005, P. R. China
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117542, Singapore
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37
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Xue Y, Wang F, Torculas M, Lofland S, Hu X. Formic Acid Regenerated Mori, Tussah, Eri, Thai, and Muga Silk Materials: Mechanism of Self-Assembly. ACS Biomater Sci Eng 2019; 5:6361-6373. [PMID: 33417811 DOI: 10.1021/acsbiomaterials.9b00577] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Flexible and water-insoluble regenerated silk materials have caught considerable interest due to their mechanical properties and numerous potential applications in medical fields. In this study, regenerated Mori (China), Thai, Eri, Muga, and Tussah silk films were prepared by a formic acid-calcium chloride (FA) method, and their structures, morphologies, and other physical properties were comparatively studied through Fourier transform infrared spectroscopy (FTIR), wide-angle X-ray scattering (WAXS), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and thermogravimetric analysis (TGA). FTIR results demonstrated that the secondary structures of those five types of silk films are different from those of their respective natural silk fibers, whose structures are dominated by stacked rigid intermolecular β-sheet crystals. Instead, intramolecular β-sheet structures were found to dominate these silk films made by FA method, as confirmed by WAXS. We propose that silk I-like structures with intramolecular β-sheets lead to water insolubility and mechanical flexibility. This comparative study offers a new pathway to understanding the tunable properties of silk-based biomaterials.
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Affiliation(s)
| | - Fang Wang
- Center of Analysis and Testing, Nanjing Normal University, Nanjing 210023, China
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38
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Zhong J, Liu Y, Ren J, Tang Y, Qi Z, Zhou X, Chen X, Shao Z, Chen M, Kaplan DL, Ling S. Understanding Secondary Structures of Silk Materials via Micro- and Nano-Infrared Spectroscopies. ACS Biomater Sci Eng 2019; 5:3161-3183. [PMID: 33405510 DOI: 10.1021/acsbiomaterials.9b00305] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The secondary structures (also termed conformations) of silk fibroin (SF) in animal silk fibers and regenerated SF materials are critical in determining mechanical performance and function of the materials. In order to understand the structure-mechanics-function relationships of silk materials, a variety of advanced infrared spectroscopic techniques, such as micro-infrared spectroscopies (micro-IR spectroscopies for short), synchrotron micro-IR spectroscopy, and nano-infrared spectroscopies (nano-IR spectroscopies for short), have been used to determine the conformations of SF in silk materials. These IR spectroscopic methods provide a useful toolkit to understand conformations and conformational transitions of SF in various silk materials with spatial resolution from the nano-scale to the micro-scale. In this Review, we first summarize progress in understanding the structure and structure-mechanics relationships of silk materials. We then discuss the state-of-the-art micro- and nano-IR spectroscopic techniques used for silk materials characterization. We also provide a systematic discussion of the strategies to collect high-quality spectra and the methods to analyze these spectra. Finally, we demonstrate the challenges and directions for future exploration of silk-based materials with IR spectroscopies.
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Affiliation(s)
- Jiajia Zhong
- National Facility for Protein Science in Shanghai, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Yawen Liu
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
| | - Jing Ren
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
| | - Yuzhao Tang
- National Facility for Protein Science in Shanghai, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Zeming Qi
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Xiaojie Zhou
- National Facility for Protein Science in Shanghai, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Xin Chen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, China
| | - Zhengzhong Shao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Laboratory of Advanced Materials, Fudan University, Shanghai 200433, China
| | - Min Chen
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Shengjie Ling
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
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39
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Yavuz B, Zeki J, Taylor J, Harrington K, Coburn JM, Ikegaki N, Kaplan DL, Chiu B. Silk Reservoirs for Local Delivery of Cisplatin for Neuroblastoma Treatment: In Vitro and In Vivo Evaluations. J Pharm Sci 2019; 108:2748-2755. [PMID: 30905702 DOI: 10.1016/j.xphs.2019.03.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 03/12/2019] [Accepted: 03/14/2019] [Indexed: 10/27/2022]
Abstract
Neuroblastoma is the most common extracranial childhood tumor, and current treatment requires surgical resection and multidrug chemotherapy. Local, perioperative delivery of chemotherapeutics is a promising treatment method for solid tumors that require surgical removal. In this study, we have aimed to develop a controlled-release implant system to deliver cisplatin in tumor or tumor resection area. Silk fibroin, a biodegradable, nonimmunogenic biopolymer was used to encapsulate different doses of cisplatin in a reservoir system. The physical integrity of the reservoirs was characterized by evaluating the crystalline structure of silk secondary structure using FTIR spectroscopy. The in vitro release of cisplatin was evaluated in phosphate-buffered saline at 37°C, and the reservoirs were able to release the drug up to 30 days. The cytotoxicity of cisplatin and cisplatin reservoirs were tested on KELLY cells. Cytotoxicity data showed 3.2 μg/mL cisplatin was required to kill 50% of the cell population, and the released cisplatin from the silk reservoirs showed significant cytotoxicity up to 21 days. Intratumoral implantation of silk reservoirs into an orthotopic neuroblastoma mouse model decreased tumor growth significantly when compared with control subjects. These results suggest that silk reservoirs are promising carriers for cisplatin delivery to the tumor site.
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Affiliation(s)
- Burcin Yavuz
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155
| | - Jasmine Zeki
- Department of Surgery, Stanford University, Stanford, California 94305
| | - Jordan Taylor
- Department of Surgery, Stanford University, Stanford, California 94305
| | - Kristin Harrington
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155
| | - Jeannine M Coburn
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155; Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts 01609
| | - Naohiko Ikegaki
- Department of Anatomy and Cell Biology, University of Illinois at Chicago, Chicago, Illinois 60612
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155.
| | - Bill Chiu
- Department of Surgery, Stanford University, Stanford, California 94305.
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40
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Mitropoulos AN, Burpo FJ, Nguyen CK, Nagelli EA, Ryu MY, Wang J, Sims RK, Woronowicz K, Wickiser JK. Noble Metal Composite Porous Silk Fibroin Aerogel Fibers. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E894. [PMID: 30889793 PMCID: PMC6470705 DOI: 10.3390/ma12060894] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/05/2019] [Accepted: 03/11/2019] [Indexed: 12/12/2022]
Abstract
Nobel metal composite aerogel fibers made from flexible and porous biopolymers offer a wide range of applications, such as in catalysis and sensing, by functionalizing the nanostructure. However, producing these composite aerogels in a defined shape is challenging for many protein-based biopolymers, especially ones that are not fibrous proteins. Here, we present the synthesis of silk fibroin composite aerogel fibers up to 2 cm in length and a diameter of ~300 μm decorated with noble metal nanoparticles. Lyophilized silk fibroin dissolved in hexafluoro-2-propanol (HFIP) was cast in silicon tubes and physically crosslinked with ethanol to produce porous silk gels. Composite silk aerogel fibers with noble metals were created by equilibrating the gels in noble metal salt solutions reduced with sodium borohydride, followed by supercritical drying. These porous aerogel fibers provide a platform for incorporating noble metals into silk fibroin materials, while also providing a new method to produce porous silk fibers. Noble metal silk aerogel fibers can be used for biological sensing and energy storage applications.
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Affiliation(s)
- Alexander N Mitropoulos
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA.
- Department of Mathematical Sciences, United States Military Academy, West Point, NY 10996, USA.
| | - F John Burpo
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA.
| | - Chi K Nguyen
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA.
| | - Enoch A Nagelli
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA.
| | - Madeline Y Ryu
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA.
| | - Jenny Wang
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA.
| | - R Kenneth Sims
- Department of Civil and Mechanical Engineering, United States Military Academy, West Point, NY 10996, USA.
| | - Kamil Woronowicz
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA.
| | - J Kenneth Wickiser
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA.
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41
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Modulation of aggregation of silk fibroin by synergistic effect of the complex of curcumin and β-cyclodextrin. BIOCHIMICA ET BIOPHYSICA ACTA. PROTEINS AND PROTEOMICS 2019; 1867:416-425. [PMID: 30677520 DOI: 10.1016/j.bbapap.2019.01.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 12/14/2018] [Accepted: 01/18/2019] [Indexed: 02/07/2023]
Abstract
Amyloid aggregation has been associated with numerous human pathological diseases. A recent study has demonstrated that silk fibroin intermittently endorses amyloidogenesis in vivo. In the current study, we explored the propensity of silk fibroin to undergo amyloid-like aggregation and its prevention using an optimized concoction of curcumin with β-cyclodextrin. Aggregation of silk fibroin resulted in the formation of fibrils with a diameter of ~3.2 nm. However, addition of the optimized concentration of curcumin and β-cyclodextrin to silk fibroin inhibited aggregation and preserved the random coil conformation even under aggregation inducing conditions, as demonstrated by CD and FTIR spectroscopy. Benzene rings of curcumin interact with the aromatic residues of fibroin via hydrophobic interactions. However, β-cyclodextrin preferentially interacts with the non-polar residues, which are the core components for nucleation dependent protein aggregation. The present study demonstrates the ability of the concoction of curcumin and β-cyclodextrin in tuning the self assembly process of fibroin. It also provides a platform to explore the assembly process of nano-fibril and hierarchical structures in vitro along with a novel insight for designing clinically relevant silk-based functional biomaterials.
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42
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Tallian C, Rumpler V, Skopek L, Russmayer H, Steiger MG, Vielnascher R, Weinberger S, Pellis A, Vecchiato S, Guebitz GM. Glutathione from recovered glucose as ingredient in antioxidant nanocapsules for triggered flavor delivery. J Mater Chem B 2019. [DOI: 10.1039/c9tb00473d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Glucose recovered via enzymatic hydrolysis of rayon fibers was used for glutathione production by S. cerevisiae. Glutathione was used in combination with HSA and silk fibroin for ultrasound assisted nanocapsules production. Triggered release of flavor substances and antioxidant properties of the nanocapsules was demonstrated.
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Affiliation(s)
- Claudia Tallian
- University of Natural Resources and Life Sciences
- Vienna (BOKU)
- Institute for Environmental Biotechnology
- Department for Agrobiotechnology (IFA-Tulln)
- 3430 Tulln an der Donau
| | - Vanessa Rumpler
- University of Natural Resources and Life Sciences
- Vienna (BOKU)
- Institute for Environmental Biotechnology
- Department for Agrobiotechnology (IFA-Tulln)
- 3430 Tulln an der Donau
| | - Lukas Skopek
- Austrian Centre of Industrial Biotechnology
- 3430 Tulln an der Donau
- Austria
| | - Hannes Russmayer
- University of Natural Resources and Life Sciences
- Department of Biotechnology
- 1190 Vienna
- Austria
| | - Matthias G. Steiger
- Austrian Centre of Industrial Biotechnology
- 3430 Tulln an der Donau
- Austria
- University of Natural Resources and Life Sciences
- Department of Biotechnology
| | - Robert Vielnascher
- University of Natural Resources and Life Sciences
- Vienna (BOKU)
- Institute for Environmental Biotechnology
- Department for Agrobiotechnology (IFA-Tulln)
- 3430 Tulln an der Donau
| | - Simone Weinberger
- University of Natural Resources and Life Sciences
- Vienna (BOKU)
- Institute for Environmental Biotechnology
- Department for Agrobiotechnology (IFA-Tulln)
- 3430 Tulln an der Donau
| | - Alessandro Pellis
- University of York
- Department of Chemistry
- Green Chemistry Centre of Excellence
- Heslington
- UK
| | - Sara Vecchiato
- Austrian Centre of Industrial Biotechnology
- 3430 Tulln an der Donau
- Austria
| | - Georg M. Guebitz
- University of Natural Resources and Life Sciences
- Vienna (BOKU)
- Institute for Environmental Biotechnology
- Department for Agrobiotechnology (IFA-Tulln)
- 3430 Tulln an der Donau
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43
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Aghaei-Ghareh-Bolagh B, Guan J, Wang Y, Martin AD, Dawson R, Mithieux SM, Weiss AS. Optically robust, highly permeable and elastic protein films that support dual cornea cell types. Biomaterials 2019; 188:50-62. [DOI: 10.1016/j.biomaterials.2018.10.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/26/2018] [Accepted: 10/07/2018] [Indexed: 10/28/2022]
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Yao M, Su D, Wang W, Chen X, Shao Z. Fabrication of Air-Stable and Conductive Silk Fibroin Gels. ACS APPLIED MATERIALS & INTERFACES 2018; 10:38466-38475. [PMID: 30280569 DOI: 10.1021/acsami.8b14521] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Owing to their promising applications in flexible electronics, researchers have extensively explored flexible and conductive gels. However, these gels have unsatisfactory strength and flexibility as well as easily dry in air. Herein, a rationally designed robust regenerated silk fibroin (RSF)-based gel with significant flexibility and strength, favorable conductivity, and excellent air stability is fabricated by inducing the conformation transition of RSF from random coil to β-sheet in ionic liquid (IL)/water mixtures. We found that such RSF-based gels have a unique homogeneous network structure of RSF nanofibers, which is likely formed because of evenly distributed cross-links dominated by small-sized β-sheet domains created during the conformation transition of RSF. Although the unique homogeneous nanostructure/network contributes toward improving the mechanical properties of these gels, it also provides pathways for ionic transport to help the gels preserve high conductivity of ILs. The prepared RSF-based gels display a remarkable air stability and reversible loss/absorption water capability in a wide humidity range environment primarily because of the distinguished combination of the IL and water. Therefore, the novel RSF-based gels hold a great potential in various applications as multifunctional, flexible, conductive materials, which are dispensed with encapsulation.
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Affiliation(s)
- Meng Yao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials , Fudan University , Shanghai 200433 , P. R. China
| | - Dihan Su
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials , Fudan University , Shanghai 200433 , P. R. China
| | - Wenqi Wang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials , Fudan University , Shanghai 200433 , P. R. China
| | - Xin Chen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials , Fudan University , Shanghai 200433 , P. R. China
| | - Zhengzhong Shao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials , Fudan University , Shanghai 200433 , P. R. China
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45
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Zheng X, Zhao M, Zhang H, Fan S, Shao H, Hu X, Zhang Y. Intrinsically Fluorescent Silks from Silkworms Fed with Rare-Earth Upconverting Phosphors. ACS Biomater Sci Eng 2018; 4:4021-4027. [DOI: 10.1021/acsbiomaterials.8b00986] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xiaoting Zheng
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P.R. China
| | - Menglu Zhao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P.R. China
| | - Huihui Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P.R. China
- The Key Laboratory of High-Performance Fibers and Product, Ministry of Education, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P.R. China
| | - Suna Fan
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P.R. China
| | - Huili Shao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P.R. China
| | - Xuechao Hu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P.R. China
| | - Yaopeng Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P.R. China
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Tallian C, Herrero-Rollett A, Stadler K, Vielnascher R, Wieland K, Weihs AM, Pellis A, Teuschl AH, Lendl B, Amenitsch H, Guebitz GM. Structural insights into pH-responsive drug release of self-assembling human serum albumin-silk fibroin nanocapsules. Eur J Pharm Biopharm 2018; 133:176-187. [PMID: 30291964 DOI: 10.1016/j.ejpb.2018.10.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 09/05/2018] [Accepted: 10/01/2018] [Indexed: 12/22/2022]
Abstract
Inflammation processes are associated with significant decreases in tissue or lysosomal pH from 7.4 to 4, a fact that argues for the application of pH-responsive drug delivery systems. However, for their design and optimization a full understanding of the release mechanism is crucial. In this study we investigated the pH-depending drug release mechanism and the influence of silk fibroin (SF) concentration and SF degradation degree of human serum albumin (HSA)-SF nanocapsules. Sonochemically produced nanocapsules were investigated regarding particle size, colloidal stability, protein encapsulation, thermal stability and drug loading properties. Particles of the monodisperse phase showed average hydrodynamic radii between 438 and 888 nm as measured by DLS and AFM and a zeta potential of -11.12 ± 3.27 mV. Together with DSC results this indicated the successful production of stable nanocapsules. ATR-FTIR analysis demonstrated that SF had a positive effect on particle formation and stability due to induced beta-sheet formation and enhanced crosslinking. The pH-responsive release was found to depend on the SF concentration. In in-vitro release studies, HSA-SF nanocapsules composed of 50% SF showed an increased pH-responsive release for all tested model substances (Rhodamine B, Crystal Violet and Evans Blue) and methotrexate at the lowered pH of 4.5 to pH 5.4, while HSA capsules without SF did not show any pH-responsive drug release. Mechanistic studies using confocal laser scanning microscopy (CLSM) and small angle X-ray scattering (SAXS) analyses showed that increases in particle porosity and decreases in particle densities are directly linked to pH-responsive release properties. Therefore, the pH-responsive release mechanism was identified as diffusion controlled in a novel and unique approach by linking scattering results with in-vitro studies. Finally, cytotoxicity studies using the human monocytic THP-1 cell line indicated non-toxic behavior of the drug loaded nanocapsules when applied in a concentration of 62.5 µg mL-1. Based on the obtained release properties of HSA-SF nanocapsules formulations and the results of in-vitro MTT assays, formulations containing 50% SF showed the highest requirements arguing for future in vivo experiments and application in the treatment of inflammatory diseases.
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Affiliation(s)
- Claudia Tallian
- Institute of Environmental Biotechnology, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Straße 20, 3430 Tulln an der Donau, Austria
| | - Alexandra Herrero-Rollett
- Institute of Environmental Biotechnology, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Straße 20, 3430 Tulln an der Donau, Austria.
| | - Karina Stadler
- Institute of Environmental Biotechnology, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Straße 20, 3430 Tulln an der Donau, Austria
| | - Robert Vielnascher
- Institute of Environmental Biotechnology, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Straße 20, 3430 Tulln an der Donau, Austria; ACIB - Austrian Centre of Industrial Biotechnology, Konrad-Lorenz-Straße 20, 3430 Tulln an der Donau, Austria
| | - Karin Wieland
- Institute of Chemical Technologies and Analytics, Division of Analytical Chemistry, Vienna University of Technology, Getreidemarkt 9/164 AC, 1060 Vienna, Austria
| | - Anna M Weihs
- Department of Biochemical Engineering, University of Applied Sciences Technikum Wien, 1200 Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Alessandro Pellis
- Institute of Environmental Biotechnology, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Straße 20, 3430 Tulln an der Donau, Austria; Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Andreas H Teuschl
- Department of Biochemical Engineering, University of Applied Sciences Technikum Wien, 1200 Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Bernhard Lendl
- Institute of Chemical Technologies and Analytics, Division of Analytical Chemistry, Vienna University of Technology, Getreidemarkt 9/164 AC, 1060 Vienna, Austria
| | - Heinz Amenitsch
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9/IV, 8010 Graz, Austria
| | - Georg M Guebitz
- Institute of Environmental Biotechnology, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Straße 20, 3430 Tulln an der Donau, Austria; ACIB - Austrian Centre of Industrial Biotechnology, Konrad-Lorenz-Straße 20, 3430 Tulln an der Donau, Austria.
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47
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Ling S, Chen W, Fan Y, Zheng K, Jin K, Yu H, Buehler MJ, Kaplan DL. Biopolymer nanofibrils: structure, modeling, preparation, and applications. Prog Polym Sci 2018; 85:1-56. [PMID: 31915410 PMCID: PMC6948189 DOI: 10.1016/j.progpolymsci.2018.06.004] [Citation(s) in RCA: 168] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Biopolymer nanofibrils exhibit exceptional mechanical properties with a unique combination of strength and toughness, while also presenting biological functions that interact with the surrounding environment. These features of biopolymer nanofibrils profit from their hierarchical structures that spun angstrom to hundreds of nanometer scales. To maintain these unique structural features and to directly utilize these natural supramolecular assemblies, a variety of new methods have been developed to produce biopolymer nanofibrils. In particular, cellulose nanofibrils (CNFs), chitin nanofibrils (ChNFs), silk nanofibrils (SNFs) and collagen nanofibrils (CoNFs), as the four most abundant biopolymer nanofibrils on earth, have been the focus of research in recent years due to their renewable features, wide availability, low-cost, biocompatibility, and biodegradability. A series of top-down and bottom-up strategies have been accessed to exfoliate and regenerate these nanofibrils for versatile advanced applications. In this review, we first summarize the structures of biopolymer nanofibrils in nature and outline their related computational models with the aim of disclosing fundamental structure-property relationships in biological materials. Then, we discuss the underlying methods used for the preparation of CNFs, ChNFs, SNF and CoNFs, and discuss emerging applications for these biopolymer nanofibrils.
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Affiliation(s)
- Shengjie Ling
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Wenshuai Chen
- Key Laboratory of Bio-based Material Science & Technology, Ministry of Education, Northeast Forestry University, Harbin, China
| | - Yimin Fan
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Ke Zheng
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Kai Jin
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Haipeng Yu
- Key Laboratory of Bio-based Material Science & Technology, Ministry of Education, Northeast Forestry University, Harbin, China
| | - Markus J. Buehler
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
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48
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Yan M, Ma X, Yang Y, Wang X, Cheong WC, Chen Z, Xu X, Huang Y, Wang S, Lian C, Li Y. Biofabrication Strategy for Functional Fabrics. NANO LETTERS 2018; 18:6017-6021. [PMID: 30084642 DOI: 10.1021/acs.nanolett.8b02905] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Functional fabrics with various unique properties are necessary for making fantastic superior costumes just like a superhero suit in Marvel Comics, which are not only dreams of boys but also emerging textiles to facilitate human life. On the basis of the inspiration of a phenomenon in an extracurricular experiment for kids, we develop a biofabrication strategy to endow silk textiles with various unique physical and chemical properties of functional nanomaterials, where the functional textiles are weaved using silk spun by silkworms that are fed with functional nanomaterials. To confirm the feasibility of this strategy, a photoluminescent plain weave was prepared successfully via feeding biocompatible luminescent nanoparticles to Bombyx mori silkworms. As the functional nanomaterials are enclosed in the silkfibers, the given special properties will be permanent for further application. Considering the wondrous diversity of properties that a variety of nanomaterials possesses may be given to silk fabric, it is promising to see various miraculous costumes in the coming future.
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Affiliation(s)
- Muyu Yan
- Department of Chemistry, School of Science , Beijing Jiaotong University , Beijing 100044 , China
| | - Xiaohong Ma
- College of Textiles and Garments , Hebei University of Science and Technology , Shijiazhuang 050018 , China
| | - Yijun Yang
- Department of Chemistry, School of Science , Beijing Jiaotong University , Beijing 100044 , China
| | - Xi Wang
- Department of Chemistry, School of Science , Beijing Jiaotong University , Beijing 100044 , China
| | - Weng-Chon Cheong
- Department of Chemistry , Tsinghua University , Beijing 100084 , China
| | - Zhenhong Chen
- College of Textiles and Garments , Hebei University of Science and Technology , Shijiazhuang 050018 , China
| | - Xianghui Xu
- College of Materials Science and Engineering , Nanjing Tech University , Nanjing 210009 , China
| | - Yanjie Huang
- South China National Centre of Metrology , Guangdong Institute of Metrology , Guangzhou 510405 , China
| | - Shuo Wang
- College of Textiles and Garments , Hebei University of Science and Technology , Shijiazhuang 050018 , China
| | - Chao Lian
- Department of Chemistry, School of Science , Beijing Jiaotong University , Beijing 100044 , China
| | - Yadong Li
- Department of Chemistry , Tsinghua University , Beijing 100084 , China
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Dubey P, Ghosh S, Banerjee S. WITHDRAWN: Synergistic Effect of Curcumin and β-cyclodextrin on Inhibition of Silk Fibroin Self Assembly. Arch Biochem Biophys 2018:S0003-9861(18)30514-9. [PMID: 30145114 DOI: 10.1016/j.abb.2018.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 08/12/2018] [Accepted: 08/21/2018] [Indexed: 11/21/2022]
Affiliation(s)
- Priyanka Dubey
- Department of Textile Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Sourabh Ghosh
- Department of Textile Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Sauradipta Banerjee
- Department of Textile Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
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50
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Thai silk fibroin gelation process enhancing by monohydric and polyhydric alcohols. Int J Biol Macromol 2018; 118:1726-1735. [PMID: 30017976 DOI: 10.1016/j.ijbiomac.2018.07.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/04/2018] [Accepted: 07/05/2018] [Indexed: 02/06/2023]
Abstract
Silk fibroin hydrogel is an interesting natural material in various biomedical applications. However, the self-assembled gelation takes a long time. In this work, different alcohol types are used as gelation enhancers for aqueous silk fibroin solution. Monohydric alcohols having carbon chain length from C1 to C4 and polyhydric alcohols with the number of mono- to tri- hydroxyl groups were used as the enhancers which are effective for rapid gelation. The addition of monohydric alcohol distinctively reduced the gelation time, comparing to the polyhydric alcohol. The gelation process is directly dependent on the polarity of alcohol and hydrophobicity. The alcohol mediated gelation imparts strong viscoelastic property and enhanced compressive modulus of resulting hydrogels. This is due to the effective formation of self-assembled beta sheet network of the silk fibroin chains facilitates the gelation process.
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