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Ghosh A, Bera AK, Singh V, Basu S, Pati F. Bioprinting of anisotropic functional corneal stroma using mechanically robust multi-material bioink based on decellularized cornea matrix. BIOMATERIALS ADVANCES 2024; 165:214007. [PMID: 39216318 DOI: 10.1016/j.bioadv.2024.214007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 07/08/2024] [Accepted: 08/23/2024] [Indexed: 09/04/2024]
Abstract
Corneal scarring is a common cause of blindness, affecting millions globally each year. A huge gap between the demand and supply of donor tissue currently limits corneal transplantation, the only definitive therapy for patients with corneal scarring. To overcome this challenge, researchers have harnessed the efficacy of 3D bioprinting to fabricate artificial corneal stromal constructs. With all the different bioinks available, the decellularized corneal matrix-based bioprinted construct can fulfill the required biological functionality but is limited by the lack of mechanical stiffness. Additionally, from a biophysical standpoint, it is necessary for an ideal corneal substitute to mimic the anisotropy of the cornea from the central optic zone to the surrounding periphery. In this study, we enhanced the mechanical robustness of decellularized cornea matrix (DCM) hydrogel by blending it with another natural polymer, sonicated silk fibroin solution in a defined ratio. Although hybrid hydrogel has an increased complex modulus than DCM hydrogel, it has a lower in vitro degradation rate and increased opaqueness due to the presence of crystalline beta-sheet conformation within the hydrogel. Therefore, we used this multi-material bioink-based approach to fabricate a corneal stromal equivalent where the outer peripheral corneal rim was printed with a mechanically robust polymeric blend of DCM and sonicated silk fibroin and the central optic zone was printed with only DCM. The bioprinted corneal stroma thus maintained its structural integrity and did not break when lifted with forceps. The two different bioinks were encapsulated with human limbus-derived mesenchymal stem cells (hLMSC) individually and 3D bioprinted in different patterns (concentric and parallel) to attain a native-like structure in terms of architecture and transparency. Thus, the bilayer cornea constructs maintained high cell viability and expressed keratocyte core proteins indicating optimal functionality. This approach helped to gain insight into bioprinting corneas with heterogeneous mechanical property without disturbing the structural clarity of the central optic zone.
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Affiliation(s)
- Anwesha Ghosh
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India
| | - Ashis Kumar Bera
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India
| | - Vivek Singh
- Centre Ocular Regeneration, Prof. Brien Holden Eye Research Centre L.V. Prasad Eye Institute, Hyderabad 500034, Telangana, India
| | - Sayan Basu
- Centre Ocular Regeneration, Prof. Brien Holden Eye Research Centre L.V. Prasad Eye Institute, Hyderabad 500034, Telangana, India
| | - Falguni Pati
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India.
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Wong K, Tan XH, Li J, Hui JHP, Goh JCH. An In Vitro Macrophage Response Study of Silk Fibroin and Silk Fibroin/Nano-Hydroxyapatite Scaffolds for Tissue Regeneration Application. ACS Biomater Sci Eng 2024. [PMID: 39381957 DOI: 10.1021/acsbiomaterials.4c00976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2024]
Abstract
In recent years, silk fibroin (SF) has been incorporated with low crystallinity nanohydroxyapatite (nHA) as a scaffold for various tissue regeneration applications due to the mechanical strength of SF and osteoconductive properties of nHA. However, currently, there is a lack of understanding of the immune response toward the degradation products of SF with nHA composite after implantation. It is known that particulate fragments from the degradation of a biomaterial can trigger an immune response. As the scaffold is made of degradable materials, the degradation products may contribute to the inflammation. Therefore, in this study, the effects of the enzymatic degradation of the SF/nHA scaffold on macrophage response were investigated in comparison to the control SF scaffold. Since the degradation products of a scaffold can influence macrophage polarization, it can be hypothesized that as the SF and SF/nHA scaffolds were degraded in vitro using protease XIV solution, the degradation products can contribute to the polarization of THP-1-derived macrophages from pro-inflammatory M1 to anti-inflammatory M2 phenotype. The results demonstrated that the initial (day 1) degradation products of the SF/nHA scaffold elicited a pro-inflammatory response, while the latter (day 24) degradation products of the SF/nHA scaffold elicited an anti-inflammatory response. Moreover, the degradation products from the SF scaffold elicited a higher anti-inflammatory response due to the faster degradation of the SF scaffold and a higher amino acid concentration in the degradation solution. Hence, this paper can help elucidate the contributory effects of the degradation products of SF and SF/nHA scaffolds on macrophage response and provide greater insights into designing silk-based biomaterials with tunable degradation rates that can modulate macrophage response for future tissue regeneration applications.
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Affiliation(s)
- Kallista Wong
- Department of Biomedical Engineering, Department of Orthopaedic Surgery, National University of Singapore 15 Kent Ridge Crescent, E7-06-03, Singapore 119276, Singapore
| | - Xuan Hao Tan
- Department of Biomedical Engineering, Department of Orthopaedic Surgery, National University of Singapore 15 Kent Ridge Crescent, E7-06-03, Singapore 119276, Singapore
| | - Jun Li
- Department of Biomedical Engineering, Department of Orthopaedic Surgery, National University of Singapore 15 Kent Ridge Crescent, E7-06-03, Singapore 119276, Singapore
| | - James Hoi Po Hui
- Department of Biomedical Engineering, Department of Orthopaedic Surgery, National University of Singapore 15 Kent Ridge Crescent, E7-06-03, Singapore 119276, Singapore
| | - James Cho Hong Goh
- Department of Biomedical Engineering, Department of Orthopaedic Surgery, National University of Singapore 15 Kent Ridge Crescent, E7-06-03, Singapore 119276, Singapore
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Ming Y, He X, Zhao Z, Meng X, Zhu Y, Tan H, Yang G, Hu Y, Zheng L. Nanocarrier-Assisted Delivery of Berberine Promotes Diabetic Alveolar Bone Regeneration by Scavenging ROS and Improving Mitochondrial Dysfunction. Int J Nanomedicine 2024; 19:10263-10282. [PMID: 39399826 PMCID: PMC11471107 DOI: 10.2147/ijn.s475320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 09/15/2024] [Indexed: 10/15/2024] Open
Abstract
Purpose Oxidative stress and mitochondrial dysfunction are potential contributors to the compromised tissue regeneration capacity of alveolar bone in diabetic patients. Berberine, an active plant alkaloid, exhibits multiple pharmacological effects including antioxidation, blood glucose- and blood lipid-lowering properties. However, it remains uncertain whether berberine can improve impaired osteogenesis in type 2 diabetes mellitus (T2DM), and its poor solubility and oral bioavailability also constrain its applications in bone regeneration. Thus, our study aimed to probe the effects of berberine on bone marrow stem cells (BMSCs) in a diabetic microenvironment, with a greater emphasis on developing a suitable nano-delivery system for berberine and assessing its capability to repair diabetic alveolar bone defects. Methods Firstly, BMSCs were exposed to berberine within a high glucose and palmitate (HG+PA) environment. Reactive oxygen species levels, mitochondrial membrane potential, ATP generation, cell apoptosis, and osteogenic potential were subsequently assessed. Next, we explored the regulatory mechanism of autophagy flux in the positive effects of berberine. Furthermore, a nanocarrier based on emulsion electrospinning for sustained local delivery of berberine (Ber@SF/PCL) was established. We assessed its capacity to enhance bone healing in the alveolar bone defect of T2DM rats through micro-computed tomography and histology analysis. Results Berberine treatment could inhibit reactive oxygen species overproduction, mitochondrial dysfunction, apoptosis, and improve osteogenesis differentiation by restoring autophagy flux under HG+PA conditions. Notably, Ber@SF/PCL electrospun nanofibrous membrane with excellent physicochemical properties and good biological safety had the potential to promote alveolar bone remodeling in T2DM rats. Conclusion Our study shed new lights into the protective role of berberine on BMSCs under T2DM microenvironment. Furthermore, berberine-loaded composite electrospun membrane may serve as a promising approach for regenerating alveolar bone in diabetic patients.
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Affiliation(s)
- Ye Ming
- College of Stomatology, Chongqing Medical University, Chongqing, People’s Republic of China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, People’s Republic of China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, People’s Republic of China
| | - Xinyi He
- College of Stomatology, Chongqing Medical University, Chongqing, People’s Republic of China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, People’s Republic of China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, People’s Republic of China
| | - Zhenxing Zhao
- College of Stomatology, Chongqing Medical University, Chongqing, People’s Republic of China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, People’s Republic of China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, People’s Republic of China
| | - Xuehuan Meng
- College of Stomatology, Chongqing Medical University, Chongqing, People’s Republic of China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, People’s Republic of China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, People’s Republic of China
| | - Ye Zhu
- College of Stomatology, Chongqing Medical University, Chongqing, People’s Republic of China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, People’s Republic of China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, People’s Republic of China
| | - Hao Tan
- College of Stomatology, Chongqing Medical University, Chongqing, People’s Republic of China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, People’s Republic of China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, People’s Republic of China
| | - Guoyin Yang
- College of Stomatology, Chongqing Medical University, Chongqing, People’s Republic of China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, People’s Republic of China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, People’s Republic of China
| | - Yun Hu
- College of Stomatology, Chongqing Medical University, Chongqing, People’s Republic of China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, People’s Republic of China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, People’s Republic of China
| | - Leilei Zheng
- College of Stomatology, Chongqing Medical University, Chongqing, People’s Republic of China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, People’s Republic of China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, People’s Republic of China
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4
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Moussa SM, Mahmoud SS, Aly EM, Talaat MS. Bio-spectroscopic analysis of corneal structural alterations in dry eye disease: A study of collagen, co-enzymes, lipids, and proteins with emphasis on phytotherapy intervention. Int J Biol Macromol 2024; 280:136010. [PMID: 39326615 DOI: 10.1016/j.ijbiomac.2024.136010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2024] [Revised: 09/06/2024] [Accepted: 09/23/2024] [Indexed: 09/28/2024]
Abstract
Dry eye disease (DED) stands as a prevalent cause for ophthalmology consultations, securing the third position following refractive errors and cataracts. Moreover, the likelihood of experiencing DED escalates with advancing age. In this experimental study corneal tissue alterations due to DED were investigated over different periods by applying both infrared and synchronous fluorescence spectroscopy. The potential effects of instillation of pomegranate and green tea water extracts as green-friendly treatment modalities were also evaluated. The obtained results collectively indicate that DED affects the OH bearing constituents (collagen, glycosaminoglycans, and proteoglycans) of cornea leading to changes in protein secondary structure and the collagen fibrils. Additionally, enhanced dehydrated environment, and reduced energetic/metabolic state, as indicated by co-enzymes, was observed. Phyto-therapeutic administration can contain these alterations with enhanced energetic/metabolic state and increased hydration environment. In conclusion, instillation of green tea extract can protect/restore the collagen fibrils and its potential effects, in general, exceeds that of pomegranate extract.
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Affiliation(s)
- Shaimaa M Moussa
- Physics department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Sherif S Mahmoud
- Biophysics and Laser Science Unit, Research Institute of Ophthalmology, Giza, Egypt.
| | - Eman M Aly
- Biophysics and Laser Science Unit, Research Institute of Ophthalmology, Giza, Egypt
| | - Mona S Talaat
- Physics department, Faculty of Science, Ain Shams University, Cairo, Egypt
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5
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Liang X, Guo S, Kuang X, Wan X, Liu L, Zhang F, Jiang G, Cong H, He H, Tan SC. Recent advancements and perspectives on processable natural biopolymers: Cellulose, chitosan, eggshell membrane, and silk fibroin. Sci Bull (Beijing) 2024:S2095-9273(24)00603-0. [PMID: 39244421 DOI: 10.1016/j.scib.2024.08.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 07/12/2024] [Accepted: 08/20/2024] [Indexed: 09/09/2024]
Abstract
With the rapid development of the global economy and the continuous consumption of fossil resources, sustainable and biodegradable natural biomass has garnered extensive attention as a promising substitute for synthetic polymers. Due to their hierarchical and nanoscale structures, natural biopolymers exhibit remarkable mechanical properties, along with excellent innate biocompatibility and biodegradability, demonstrating significant potential in various application scenarios. Among these biopolymers, proteins and polysaccharides are the most commonly studied due to their low cost, abundance, and ease of use. However, the direct processing/conversion of proteins and polysaccharides into their final products has been a long-standing challenge due to their natural morphology and compositions. In this review, we emphasize the importance of processing natural biopolymers into high-value-added products through sustainable and cost-effective methods. We begin with the extraction of four types of natural biopolymers: cellulose, chitosan, eggshell membrane, and silk fibroin. The processing and post-functionalization strategies for these natural biopolymers are then highlighted. Alongside their unique structures, the versatile potential applications of these processable natural biopolymers in biomedical engineering, biosensors, environmental engineering, and energy applications are illustrated. Finally, we provide a summary and future outlook on processable natural biopolymers, underscoring the significance of converting natural biopolymers into valuable biomaterial platforms.
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Affiliation(s)
- Xinhua Liang
- Engineering Research Center for Knitting Technology (Ministry of Education), Jiangnan University, Wuxi 214122, China
| | - Shuai Guo
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117574, Singapore
| | - Xiaoju Kuang
- Engineering Research Center for Knitting Technology (Ministry of Education), Jiangnan University, Wuxi 214122, China
| | - Xiaoqian Wan
- Engineering Research Center for Knitting Technology (Ministry of Education), Jiangnan University, Wuxi 214122, China
| | - Lu Liu
- Engineering Research Center for Knitting Technology (Ministry of Education), Jiangnan University, Wuxi 214122, China
| | - Fei Zhang
- Department of Sport Medicine, The Ninth People's Hospital affiliated to Soochow University, Wuxi 215200, China
| | - Gaoming Jiang
- Engineering Research Center for Knitting Technology (Ministry of Education), Jiangnan University, Wuxi 214122, China
| | - Honglian Cong
- Engineering Research Center for Knitting Technology (Ministry of Education), Jiangnan University, Wuxi 214122, China
| | - Haijun He
- Engineering Research Center for Knitting Technology (Ministry of Education), Jiangnan University, Wuxi 214122, China.
| | - Swee Ching Tan
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117574, Singapore.
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6
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Sun Y, Ma L, Wei T, Zheng M, Mao C, Yang M, Shuai Y. Green, Low-carbon Silk-based Materials in Water Treatment: Current State and Future Trends. CHEMSUSCHEM 2024; 17:e202301549. [PMID: 38298106 DOI: 10.1002/cssc.202301549] [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: 10/30/2023] [Revised: 01/04/2024] [Accepted: 01/29/2024] [Indexed: 02/02/2024]
Abstract
The improper and inadequate treatment of industrial, agricultural, and household wastewater exerts substantial pressure on the existing ecosystem and poses a serious threat to the health of both humans and animals. To address these issues, different types of materials have been employed to eradicate detrimental pollutants from wastewater and facilitate the reuse of water resources. Nevertheless, owing to the challenges associated with the degradation of these traditional materials post-use and their incompatibility with the environment, natural biopolymers have garnered considerable interest. Silk protein, as a biomacromolecule, exhibits advantageous characteristics including environmental friendliness, low carbon emissions, biodegradability, sustainability, and biocompatibility. Considering recent research findings, this comprehensive review outlines the structure and properties of silk proteins and offers a detailed overview of the manufacturing techniques employed in the production of silk-based materials (SBMs) spanning different forms. Furthermore, it conducts an in-depth analysis of the state-of-the-art SBMs for water treatment purposes, encompassing adsorption, catalysis, water disinfection, desalination, and biosensing. The review highlights the potential of SBMs in addressing the challenges of wastewater treatment and provides valuable insights into prospective avenues for further research.
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Affiliation(s)
- Yuxu Sun
- Key Laboratory of Silkworm and Bee Resource Utilization and Innovation of Zhejiang Province, Institute of Applied Bioresource Research, College of Animal Science, Zhejiang University, 310058, Hangzhou, China
| | - Lantian Ma
- Key Laboratory of Silkworm and Bee Resource Utilization and Innovation of Zhejiang Province, Institute of Applied Bioresource Research, College of Animal Science, Zhejiang University, 310058, Hangzhou, China
| | - Tiancheng Wei
- Key Laboratory of Silkworm and Bee Resource Utilization and Innovation of Zhejiang Province, Institute of Applied Bioresource Research, College of Animal Science, Zhejiang University, 310058, Hangzhou, China
| | - Meidan Zheng
- Key Laboratory of Silkworm and Bee Resource Utilization and Innovation of Zhejiang Province, Institute of Applied Bioresource Research, College of Animal Science, Zhejiang University, 310058, Hangzhou, China
| | - Chuanbin Mao
- School of Materials Science and Engineering, Zhejiang University, 310027, Hangzhou, Zhejiang, P. R. China
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Sha Tin, 999077, Hong Kong SAR, P. R.China
| | - Mingying Yang
- Key Laboratory of Silkworm and Bee Resource Utilization and Innovation of Zhejiang Province, Institute of Applied Bioresource Research, College of Animal Science, Zhejiang University, 310058, Hangzhou, China
| | - Yajun Shuai
- Key Laboratory of Silkworm and Bee Resource Utilization and Innovation of Zhejiang Province, Institute of Applied Bioresource Research, College of Animal Science, Zhejiang University, 310058, Hangzhou, China
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Agostinacchio F, Fitzpatrick V, Dirè S, Kaplan DL, Motta A. Silk fibroin-based inks for in situ 3D printing using a double crosslinking process. Bioact Mater 2024; 35:122-134. [PMID: 38312518 PMCID: PMC10837071 DOI: 10.1016/j.bioactmat.2024.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/16/2024] [Accepted: 01/16/2024] [Indexed: 02/06/2024] Open
Abstract
The shortage of tissues and organs for transplantation is an urgent clinical concern. In situ 3D printing is an advanced 3D printing technique aimed at printing the new tissue or organ directly in the patient. The ink for this process is central to the outcomes, and must meet specific requirements such as rapid gelation, shape integrity, stability over time, and adhesion to surrounding healthy tissues. Among natural materials, silk fibroin exhibits fascinating properties that have made it widely studied in tissue engineering and regenerative medicine. However, further improvements in silk fibroin inks are needed to match the requirements for in situ 3D printing. In the present study, silk fibroin-based inks were developed for in situ applications by exploiting covalent crosslinking process consisting of a pre-photo-crosslinking prior to printing and in situ enzymatic crosslinking. Two different silk fibroin molecular weights were characterized and the synergistic effect of the covalent bonds with shear forces enhanced the shift in silk secondary structure toward β-sheets, thus, rapid stabilization. These hydrogels exhibited good mechanical properties, stability over time, and resistance to enzymatic degradation over 14 days, with no significant changes over time in their secondary structure and swelling behavior. Additionally, adhesion to tissues in vitro was demonstrated.
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Affiliation(s)
- Francesca Agostinacchio
- National Interuniversity Consortium of Material Science and Technology, Florence, Italy
- BIOtech Research Center and European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Department of Industrial Engineering, University of Trento, Trento, Italy
| | - Vincent Fitzpatrick
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Sandra Dirè
- Materials Chemistry Group & “Klaus Müller” Magnetic Resonance Laboratory, Department of Industrial Engineering, University of Trento, Trento, Italy
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Antonella Motta
- BIOtech Research Center and European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Department of Industrial Engineering, University of Trento, Trento, Italy
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8
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Xu L, Wu C, Lay Yap P, Losic D, Zhu J, Yang Y, Qiao S, Ma L, Zhang Y, Wang H. Recent advances of silk fibroin materials: From molecular modification and matrix enhancement to possible encapsulation-related functional food applications. Food Chem 2024; 438:137964. [PMID: 37976879 DOI: 10.1016/j.foodchem.2023.137964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 11/07/2023] [Accepted: 11/09/2023] [Indexed: 11/19/2023]
Abstract
Silk fibroin materials are emergingly explored for food applications due to their inherent properties including safe oral consumption, biocompatibility, gelatinization, antioxidant performance, and mechanical properties. However, silk fibroin possesses drawbacks like brittleness owing to its inherent specific composition and structure, which limit their applications in this field. This review discusses current progress about molecular modification methods on silk fibroin such as extraction, blending, self-assembly, enzymatic catalysis, etc., to address these limitations and improve their physical/chemical properties. It also summarizes matrix enhancement strategies including freeze drying, spray drying, electrospinning/electrospraying, microfluidic spinning/wheel spinning, desolvation and supercritical fluid, to generate nano-, submicron-, micron-, or bulk-scale materials. It finally highlights the food applications of silk fibroin materials, including nutraceutical improvement, emulsions, enzyme immobilization and 3D/4D printing. This review also provides insights on potential opportunities (like safe modification, toxicity risk evaluation, and digestion conditions) and possibilities (like digital additive manufacturing) in functional food industry.
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Affiliation(s)
- Liang Xu
- College of Food Science, Southwest University, Chongqing 400715, PR China; Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chongqing 400715, PR China; Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, PR China; Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Chongqing 400715, PR China; Key Laboratory of Condiment Supervision Technology for State Market Regulation, Chongqing 400715, PR China
| | - Chaoyang Wu
- College of Food Science, Southwest University, Chongqing 400715, PR China
| | - Pei Lay Yap
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia; ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia; ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Juncheng Zhu
- College of Food Science, Southwest University, Chongqing 400715, PR China
| | - Yuxin Yang
- College of Food Science, Southwest University, Chongqing 400715, PR China
| | - Shihao Qiao
- College of Food Science, Southwest University, Chongqing 400715, PR China
| | - Liang Ma
- College of Food Science, Southwest University, Chongqing 400715, PR China
| | - Yuhao Zhang
- College of Food Science, Southwest University, Chongqing 400715, PR China; Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chongqing 400715, PR China; Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, PR China; Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Chongqing 400715, PR China; Key Laboratory of Condiment Supervision Technology for State Market Regulation, Chongqing 400715, PR China.
| | - Hongxia Wang
- College of Food Science, Southwest University, Chongqing 400715, PR China; Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chongqing 400715, PR China; Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, PR China; Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Chongqing 400715, PR China; Key Laboratory of Condiment Supervision Technology for State Market Regulation, Chongqing 400715, PR China.
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9
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Wu J, Cortes KAF, Li C, Wang Y, Guo C, Momenzadeh K, Yeritsyan D, Hanna P, Lechtig A, Nazarian A, Lin SJ, Kaplan DL. Tuning the Biodegradation Rate of Silk Materials via Embedded Enzymes. ACS Biomater Sci Eng 2024; 10:2607-2615. [PMID: 38478959 DOI: 10.1021/acsbiomaterials.3c01758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Conventional thinking when designing biodegradable materials and devices is to tune the intrinsic properties and morphological features of the material to regulate their degradation rate, modulating traditional factors such as molecular weight and crystallinity. Since regenerated silk protein can be directly thermoplastically molded to generate robust dense silk plastic-like materials, this approach afforded a new tool to control silk degradation by enabling the mixing of a silk-degrading protease into bulk silk material prior to thermoplastic processing. Here we demonstrate the preparation of these silk-based devices with embedded silk-degrading protease to modulate the degradation based on the internal presence of the enzyme to support silk degradation, as opposed to the traditional surface degradation for silk materials. The degradability of these silk devices with and without embedded protease XIV was assessed both in vitro and in vivo. Ultimately, this new process approach provides direct control of the degradation lifetime of the devices, empowered through internal digestion via water-activated proteases entrained and stabilized during the thermoplastic process.
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Affiliation(s)
- Junqi Wu
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Kareen A Fajardo Cortes
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Chunmei Li
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Yushu Wang
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Chengchen Guo
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Kaveh Momenzadeh
- Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, 330 Brookline Ave., RN 115, Boston, Massachusetts 02215, United States
| | - Diana Yeritsyan
- Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, 330 Brookline Ave., RN 115, Boston, Massachusetts 02215, United States
| | - Philip Hanna
- Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, 330 Brookline Ave., RN 115, Boston, Massachusetts 02215, United States
| | - Aron Lechtig
- Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, 330 Brookline Ave., RN 115, Boston, Massachusetts 02215, United States
| | - Ara Nazarian
- Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, 330 Brookline Ave., RN 115, Boston, Massachusetts 02215, United States
| | - Samuel J Lin
- Divisions of Plastic Surgery and Otolaryngology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, United States
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
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10
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Qin D, Wang M, Cheng W, Chen J, Wang F, Sun J, Ma C, Zhang Y, Zhang H, Li H, Liu K, Li J. Spidroin-mimetic Engineered Protein Fibers with High Toughness and Minimized Batch-to-batch Variations through β-sheets Co-assembly. Angew Chem Int Ed Engl 2024; 63:e202400595. [PMID: 38321642 DOI: 10.1002/anie.202400595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/05/2024] [Accepted: 02/05/2024] [Indexed: 02/08/2024]
Abstract
Synthetic spidroin fibers have not yet attained the same level of toughness and stability as natural spider silks due to the complexity of composition and hierarchical structure. Particularly, understanding the intricate interactions between spidroin components in spider fiber is still elusive. Herein, we report modular design and preparation of spidroin-mimetic fibers composed of a conservative C-terminus spidroin module, two different natural β-sheets modules, and a non-spidroin random-coil module. The resulting fibers exhibit a toughness of ~200 MJ/m3, reaching the highest value among the reported artificial spider silks. The interactions between two components of recombinant spidroins facilitate the intermolecular co-assembly of β-sheets, thereby enhancing the mechanical strength and reducing batch-to-batch variability in the dual-component spidroin fibers. Additionally, the dual-component spidroin fibers offer potential applications in implantable or even edible devices. Therefore, our work presents a generic strategy to develop high-performance protein fibers for diverse translations in different scenarios.
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Affiliation(s)
- Dawen Qin
- School of Chemical Engineering and Technology, Hebei University of Technology, 300130, Tianjin, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Mengyao Wang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Wenhao Cheng
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Jing Chen
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Fan Wang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
| | - Jing Sun
- School of Chemistry and Molecular Engineering, Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, 200241, Shanghai, China
| | - Chao Ma
- Engineering Research Center of Advanced Rare Earth Materials of the Ministry of Education, Department of Chemistry, Tsinghua University, 100084, Beijing, China
| | - Yingying Zhang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, 100084, Beijing, China
| | - Hongjie Zhang
- Engineering Research Center of Advanced Rare Earth Materials of the Ministry of Education, Department of Chemistry, Tsinghua University, 100084, Beijing, China
| | - Huanrong Li
- School of Chemical Engineering and Technology, Hebei University of Technology, 300130, Tianjin, China
| | - Kai Liu
- Engineering Research Center of Advanced Rare Earth Materials of the Ministry of Education, Department of Chemistry, Tsinghua University, 100084, Beijing, China
| | - Jingjing Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China
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11
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Shi R, Wang F, Fu Q, Zeng P, Chen G, Chen Z. Molecular mechanism analysis of apoptosis induced by silk fibroin peptides. Int J Biol Macromol 2024; 264:130687. [PMID: 38462112 DOI: 10.1016/j.ijbiomac.2024.130687] [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: 01/09/2024] [Revised: 03/01/2024] [Accepted: 03/05/2024] [Indexed: 03/12/2024]
Abstract
Silk fibroin derived from silkworm cocoons exhibits excellent mechanical properties, good biocompatibility, and low immunogenicity. Previous studies showed that silk fibroin had an inhibitory effect on cells, suppressing proliferation and inducing apoptosis. However, the source of the toxicity and the mechanism of apoptosis induction are still unclear. In this study, we hypothesized that the toxicity of silk fibroin might originate from the crystalline region of the heavy chain of silk fibroin. We then verified the hypothesis and the specific induction mechanism. A target peptide segment was obtained from α-chymotrypsin. The potentially toxic mixture of silk fibroin peptides (SFPs) was separated by ion exchange, and the toxicity was tested by an MTT assay. The results showed that SFPs obtained after 4 h of enzymatic hydrolysis had significant cytotoxicity, and SFPs with isoelectric points of 4.0-6.8 (SFPα II) had a significant inhibitory effect on cell growth. LC-MS/MS analysis showed that SFPα II contained a large number of glycine-rich and alanine-rich repetitive sequence polypeptides from the heavy-chain crystallization region. A series of experiments showed that SFPα II mediated cell death through the apoptotic pathway by decreasing the expression of Bcl-2 protein and increasing the expression of Bax protein. SFPα II mainly affected the p53 pathway and the AMPK signaling pathway in HepG2 cells. SFPα II may indirectly increase the expression of Cers2 by inhibiting the phosphorylation of EGFR, which activated apoptotic signaling in the cellular mitochondrial pathway and inhibited the Akt/NF-κB pathway by increasing the expression of PPP2R2A.
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Affiliation(s)
- Ruyu Shi
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Fuping Wang
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Qiang Fu
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Peng Zeng
- The Seventh People's Hospital of Chongqing, Chongqing 400054, China
| | - Guobao Chen
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Zhongmin Chen
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China.
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12
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Zhang J, Wang L, Xu C, Cao Y, Liu S, Reis RL, Kundu SC, Yang X, Xiao B, Duan L. Transparent silk fibroin film-facilitated infected-wound healing through antibacterial, improved fibroblast adhesion and immune modulation. J Mater Chem B 2024; 12:475-488. [PMID: 38099432 DOI: 10.1039/d3tb02146g] [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: 01/05/2024]
Abstract
The clinical application of regenerated silk fibroin (RSF) films for wound treatment is restricted by its undesirable mechanical properties and lack of antibacterial activity. Herein, different pluronic polymers were introduced to optimize their mechanical properties and the RSF film with 2.5% pluronic F127 (RSFPF127) stood out to address the above issues owing to its satisfactory mechanical properties, hydrophilicity, and transmittance. Diverse antibacterial agents (curcumin, Ag nanoparticles, and antimicrobial peptide KR-12) were separately encapsulated in RSFPF127 to endow it with antibacterial activity. In vitro experiments revealed that the medicated RSFPF127 could persistently release drugs and had desirable bioactivities toward killing bacteria, promoting fibroblast adhesion, and modulating macrophage polarization. In vivo experiments revealed that medicated RSFPF127 not only eradicated methicillin-resistant Staphylococcus aureus in the wound area and inhibited inflammatory responses, but also facilitated angiogenesis and re-epithelialization, regardless of the types of antibacterial agents, thus accelerating the recovery of infected wounds. These results demonstrate that RSFPF127 is an ideal matrix platform to load different types of drugs for application as wound dressings.
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Affiliation(s)
- Jiamei Zhang
- State Key Laboratory of Resource Insects, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Beibei, Chongqing 400715, China.
| | - Lingshuang Wang
- State Key Laboratory of Resource Insects, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Beibei, Chongqing 400715, China.
| | - Cheng Xu
- State Key Laboratory of Resource Insects, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Beibei, Chongqing 400715, China.
| | - Yingui Cao
- State Key Laboratory of Resource Insects, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Beibei, Chongqing 400715, China.
| | - Shengsheng Liu
- State Key Laboratory of Resource Insects, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Beibei, Chongqing 400715, China.
| | - Rui L Reis
- 3Bs Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Barco 4805-017, Guimaraes, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Subhas C Kundu
- 3Bs Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Barco 4805-017, Guimaraes, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Xiao Yang
- State Key Laboratory of Resource Insects, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Beibei, Chongqing 400715, China.
| | - Bo Xiao
- State Key Laboratory of Resource Insects, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Beibei, Chongqing 400715, China.
| | - Lian Duan
- State Key Laboratory of Resource Insects, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Beibei, Chongqing 400715, China.
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13
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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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14
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Presley KF, Falcucci T, Shaidani S, Fitzpatrick V, Barry J, Ly JT, Dalton MJ, Grusenmeyer TA, Kaplan DL. Engineered porosity for tissue-integrating, bioresorbable lifetime-based phosphorescent oxygen sensors. Biomaterials 2023; 301:122286. [PMID: 37643490 DOI: 10.1016/j.biomaterials.2023.122286] [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: 02/21/2023] [Revised: 08/05/2023] [Accepted: 08/18/2023] [Indexed: 08/31/2023]
Abstract
Versatile silk protein-based material formats were studied to demonstrate bioresorbable, implantable optical oxygen sensors that can integrate with the surrounding tissues. The ability to continuously monitor tissue oxygenation in vivo is desired for a range of medical applications. Silk was chosen as the matrix material due to its excellent biocompatibility, its unique chemistry that facilitates interactions with chromophores, and the potential to tune degradation time without altering chemical composition. A phosphorescent Pd (II) benzoporphyrin chromophore was incorporated to impart oxygen sensitivity. Organic solvent-based processing methods using 1,1,1,3,3,3-hexafluoro-2-propanol were used to fabricate: 1) silk-chromophore films with varied thickness and 2) silk-chromophore sponges with interconnected porosity. All compositions were biocompatible and exhibited photophysical properties with oxygen sensitivities (i.e., Stern-Volmer quenching rate constants of 2.7-3.2 × 104 M-1) useful for monitoring physiological tissue oxygen levels and for detecting deviations from normal behavior (e.g., hyperoxia). The potential to tune degradation time without significantly impacting photophysical properties was successfully demonstrated. Furthermore, the ability to consistently monitor tissue oxygenation in vivo was established via a multi-week rodent study. Histological assessments indicated successful tissue integration for the sponges, and this material format responded more quickly to various oxygen challenges than the film samples.
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Affiliation(s)
- Kayla F Presley
- Air Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, Wright-Patterson AFB, Ohio, 45433, United States; UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH, 45432, United States.
| | - Thomas Falcucci
- Tufts University, Biomedical Engineering, 4 Colby Street, Medford, MA, 02155, United States
| | - Sawnaz Shaidani
- Tufts University, Biomedical Engineering, 4 Colby Street, Medford, MA, 02155, United States
| | - Vincent Fitzpatrick
- Tufts University, Biomedical Engineering, 4 Colby Street, Medford, MA, 02155, United States
| | - Jonah Barry
- Tufts University, Biomedical Engineering, 4 Colby Street, Medford, MA, 02155, United States
| | - Jack T Ly
- Air Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, Wright-Patterson AFB, Ohio, 45433, United States; UES, Inc., 4401 Dayton-Xenia Road, Dayton, OH, 45432, United States
| | - Matthew J Dalton
- Air Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, Wright-Patterson AFB, Ohio, 45433, United States
| | - Tod A Grusenmeyer
- Air Force Research Laboratory, Materials and Manufacturing Directorate, 2179 12th Street, Wright-Patterson AFB, Ohio, 45433, United States.
| | - David L Kaplan
- Tufts University, Biomedical Engineering, 4 Colby Street, Medford, MA, 02155, United States.
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15
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Ali M, Bathaei MJ, Istif E, Karimi SNH, Beker L. Biodegradable Piezoelectric Polymers: Recent Advancements in Materials and Applications. Adv Healthc Mater 2023; 12:e2300318. [PMID: 37235849 PMCID: PMC11469082 DOI: 10.1002/adhm.202300318] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 05/21/2023] [Indexed: 05/28/2023]
Abstract
Recent materials, microfabrication, and biotechnology improvements have introduced numerous exciting bioelectronic devices based on piezoelectric materials. There is an intriguing evolution from conventional unrecyclable materials to biodegradable, green, and biocompatible functional materials. As a fundamental electromechanical coupling material in numerous applications, novel piezoelectric materials with a feature of degradability and desired electrical and mechanical properties are being developed for future wearable and implantable bioelectronics. These bioelectronics can be easily integrated with biological systems for applications, including sensing physiological signals, diagnosing medical problems, opening the blood-brain barrier, and stimulating healing or tissue growth. Therefore, the generation of piezoelectricity from natural and synthetic bioresorbable polymers has drawn great attention in the research field. Herein, the significant and recent advancements in biodegradable piezoelectric materials, including natural and synthetic polymers, their principles, advanced applications, and challenges for medical uses, are reviewed thoroughly. The degradation methods of these piezoelectric materials through in vitro and in vivo studies are also investigated. These improvements in biodegradable piezoelectric materials and microsystems could enable new applications in the biomedical field. In the end, potential research opportunities regarding the practical applications are pointed out that might be significant for new materials research.
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Affiliation(s)
- Mohsin Ali
- Department of Biomedical Sciences and EngineeringKoç UniversityRumelifeneri YoluSarıyerIstanbul34450Turkey
| | - Mohammad Javad Bathaei
- Department of Biomedical Sciences and EngineeringKoç UniversityRumelifeneri YoluSarıyerIstanbul34450Turkey
| | - Emin Istif
- Department of Mechanical EngineeringKoç UniversityRumelifeneri YoluSarıyerIstanbul34450Turkey
- Faculty of Engineering and Natural SciencesKadir Has UniversityCibaliIstanbul34083Turkey
| | - Seyed Nasir Hosseini Karimi
- Koç University Research Center for Translational Research (KUTTAM)Rumelifeneri YoluSarıyerIstanbul34450Turkey
| | - Levent Beker
- Department of Biomedical Sciences and EngineeringKoç UniversityRumelifeneri YoluSarıyerIstanbul34450Turkey
- Department of Mechanical EngineeringKoç UniversityRumelifeneri YoluSarıyerIstanbul34450Turkey
- Koç University Research Center for Translational Research (KUTTAM)Rumelifeneri YoluSarıyerIstanbul34450Turkey
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16
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Roblin NV, DeBari MK, Shefter SL, Iizuka E, Abbott RD. Development of a More Environmentally Friendly Silk Fibroin Scaffold for Soft Tissue Applications. J Funct Biomater 2023; 14:jfb14040230. [PMID: 37103320 PMCID: PMC10143335 DOI: 10.3390/jfb14040230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/12/2023] [Accepted: 04/14/2023] [Indexed: 04/28/2023] Open
Abstract
A push for environmentally friendly approaches to biomaterials fabrication has emerged from growing conservational concerns in recent years. Different stages in silk fibroin scaffold production, including sodium carbonate (Na2CO3)-based degumming and 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP)-based fabrication, have drawn attention for their associated environmental concerns. Environmentally friendly alternatives have been proposed for each processing stage; however, an integrated green fibroin scaffold approach has not been characterized or used for soft tissue applications. Here, we show that the combination of sodium hydroxide (NaOH) as a substitute degumming agent with the popular "aqueous-based" alternative silk fibroin gelation method yields fibroin scaffolds with comparable properties to traditional Na2CO3-degummed aqueous-based scaffolds. The more environmentally friendly scaffolds were found to have comparable protein structure, morphology, compressive modulus, and degradation kinetics, with increased porosity and cell seeding density relative to traditional scaffolds. Human adipose-derived stem cells showed high viability after three days of culture while seeded in each scaffold type, with uniform cell attachment to pore walls. Adipocytes from human whole adipose tissue seeded into scaffolds were found to have similar levels of lipolytic and metabolic function between conditions, in addition to a healthy unilocular morphology. Results indicate that our more environmentally friendly methodology for silk scaffold production is a viable alternative and well suited to soft tissue applications.
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Affiliation(s)
- Nathan V Roblin
- Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Megan K DeBari
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Sandra L Shefter
- Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Erica Iizuka
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Rosalyn D Abbott
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
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17
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Choi J, Sahoo JK, Hasturk O, Falcucci T, Yao Y, Kaplan DL. Instantaneous Formation of Silk Protein Aerosols and Fibers with a Portable Spray Device Under Ambient Conditions. ADVANCED MATERIALS TECHNOLOGIES 2023; 8:2201392. [PMID: 37635855 PMCID: PMC10456984 DOI: 10.1002/admt.202201392] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Indexed: 08/29/2023]
Abstract
A variety of artificial silk spinning approaches have been attempted to mimic the natural spinning process found in silkworms and spiders, yet instantaneous silk fiber formation with hierarchical structure under physiological and ambient conditions without post-treatment procedures remains unaddressed. Here, we report a new strategy to fabricate silk protein-based aerosols and silk fibers instantaneously (< 1 s) in situ using a simple, portable, spray device, avoiding complicated and costly advanced manufacturing techniques. The key to success is the instantaneous conformational transition of silk fibroin from random coil to β-sheet right before spraying by mixing silk and polyethylene glycol (PEG) solutions in the spray device, allowing aerosols and silk fibers to be sprayed in situ, with further control achieved via the molecular weight of silk. The spinning process of the spray device is based on the use of green solvents, i.e., all steps of instant conformational transition of silk fibroin are carried out in aqueous conditions or with buffers at ambient conditions, in combination with shear and elongational flow caused by the hydraulic pressure generated in the spray container. The system supports a portable and user-friendly system that could be used for drug delivery carriers, wound coating materials and rapid silk fiber conformal coatings on surfaces.
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Affiliation(s)
- Jaewon Choi
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, USA; Department of Polymer Science and Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Jugal Kishore Sahoo
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, USA
| | - Onur Hasturk
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, USA
| | - Thomas Falcucci
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, USA
| | - Ya Yao
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, USA
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18
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A Comprehensive Review on Silk Fibroin as a Persuasive Biomaterial for Bone Tissue Engineering. Int J Mol Sci 2023; 24:ijms24032660. [PMID: 36768980 PMCID: PMC9917095 DOI: 10.3390/ijms24032660] [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: 12/30/2022] [Revised: 01/25/2023] [Accepted: 01/28/2023] [Indexed: 02/02/2023] Open
Abstract
Bone tissue engineering (BTE) utilizes a special mix of scaffolds, cells, and bioactive factors to regulate the microenvironment of bone regeneration and form a three-dimensional bone simulation structure to regenerate bone tissue. Silk fibroin (SF) is perhaps the most encouraging material for BTE given its tunable mechanical properties, controllable biodegradability, and excellent biocompatibility. Numerous studies have confirmed the significance of SF for stimulating bone formation. In this review, we start by introducing the structure and characteristics of SF. After that, the immunological mechanism of SF for osteogenesis is summarized, and various forms of SF biomaterials and the latest development prospects of SF in BTE are emphatically introduced. Biomaterials based on SF have great potential in bone tissue engineering, and this review will serve as a resource for future design and research.
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19
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Franco AR, Pirraco R, Fernandes EM, Rodrigues F, Leonor IB, Kaplan DL, Reis RL. Untangling the biological and inflammatory behavior of silk-like sutures In vivo. Biomaterials 2022; 290:121829. [DOI: 10.1016/j.biomaterials.2022.121829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 09/13/2022] [Accepted: 09/24/2022] [Indexed: 11/02/2022]
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20
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Bucciarelli A, Motta A. Use of Bombyx mori silk fibroin in tissue engineering: From cocoons to medical devices, challenges, and future perspectives. BIOMATERIALS ADVANCES 2022; 139:212982. [PMID: 35882138 DOI: 10.1016/j.bioadv.2022.212982] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/07/2022] [Accepted: 06/08/2022] [Indexed: 05/26/2023]
Abstract
Silk fibroin has become a prominent material in tissue engineering (TE) over the last 20 years with almost 10,000 published works spanning in all the TE applications, from skeleton to neuronal regeneration. Fibroin is an extremely versatile biopolymer that, due to its ease of processing, has enabled the development of an entire plethora of materials whose properties and architectures can be tailored to suit target applications. Although the research and development of fibroin TE materials and devices is mature, apart from sutures, only a few medical products made of fibroin are used in the clinical routines. <40 clinical trials of Bombyx mori silk-related products have been reported by the FDA and few of them resulted in a commercialized device. In this review, after explaining the structure and properties of silk fibroin, we provide an overview of both fibroin constructs existing in the literature and fibroin devices used in clinic. Through the comparison of these two categories, we identified the burning issues faced by fibroin products during their translation to the market. Two main aspects will be considered. The first is the standardization of production processes, which leads both to the standardization of the characteristics of the issued device and the correct assessment of its failure. The second is the FDA regulations, which allow new devices to be marketed through the 510(k) clearance by demonstrating their equivalence to a commercialized medical product. The history of some fibroin medical devices will be taken as a case study. Finally, we will outline a roadmap outlining what actions we believe are needed to bring fibroin products to the market.
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Affiliation(s)
- Alessio Bucciarelli
- CNR nanotech, National Council of Research, University Campus Ecotekne, Via Monteroni, 73100 Lecce, Italy.
| | - Antonella Motta
- BIOtech research centre and European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Department of Industrial Engineering, University of Trento, Via delle Regole 101, 38123 Trento, Italy.
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21
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Rosli NE, Ali MSM, Kamarudin NHA, Masomian M, Latip W, Saadon S, Rahman RNZRA. Structure Prediction and Characterization of Thermostable Aldehyde Dehydrogenase from Newly Isolated Anoxybacillus geothermalis Strain D9. Microorganisms 2022; 10:microorganisms10071444. [PMID: 35889163 PMCID: PMC9322625 DOI: 10.3390/microorganisms10071444] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 07/04/2022] [Accepted: 07/08/2022] [Indexed: 11/16/2022] Open
Abstract
In nature, aldehyde dehydrogenase (ALDH) is widely distributed and mainly involved in the oxidation of aldehydes. Thermostability is one of the key features for industrial enzymes. The ability of enzymes to withstand a high operating temperature offers many advantages, including enhancing productivity in industries. This study was conducted to understand the structural and biochemical features of ALDH from thermophilic bacterium, Anoxybacillus geothermalis strain D9. The 3D structure of A. geothermalis ALDH was predicted by YASARA software and composed of 24.3% β-sheet located at the center core region. The gene, which encodes 504 amino acids with a molecular weight of ~56 kDa, was cloned into pET51b(+) and expressed in E.coli Transetta (DE3). The purified A. geothermalis ALDH showed remarkable thermostability with optimum temperature at 60 °C and stable at 70 °C for 1 h. The melting point of the A. geothermalis ALDH is at 65.9 °C. Metal ions such as Fe3+ ions inhibited the enzyme activity, while Li+ and Mg2+ enhanced by 38.83% and 105.83%, respectively. Additionally, this enzyme showed tolerance to most non-polar organic solvents tested (xylene, n-dedocane, n-tetradecane, n-hexadecane) in a concentration of 25% v/v. These findings have generally improved the understanding of thermostable A. geothermalis ALDH so it can be widely used in the industry.
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Affiliation(s)
- Nur Ezzati Rosli
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia; (N.E.R.); (M.S.M.A.); (N.H.A.K.); (M.M.); (W.L.); (S.S.)
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Science, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia
| | - Mohd Shukuri Mohamad Ali
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia; (N.E.R.); (M.S.M.A.); (N.H.A.K.); (M.M.); (W.L.); (S.S.)
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Science, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia
| | - Nor Hafizah Ahmad Kamarudin
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia; (N.E.R.); (M.S.M.A.); (N.H.A.K.); (M.M.); (W.L.); (S.S.)
- Centre of Foundation Studies for Agricultural Sciences, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia
| | - Malihe Masomian
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia; (N.E.R.); (M.S.M.A.); (N.H.A.K.); (M.M.); (W.L.); (S.S.)
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Science, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia
| | - Wahhida Latip
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia; (N.E.R.); (M.S.M.A.); (N.H.A.K.); (M.M.); (W.L.); (S.S.)
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Science, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia
| | - Shazleen Saadon
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia; (N.E.R.); (M.S.M.A.); (N.H.A.K.); (M.M.); (W.L.); (S.S.)
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Science, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia
- Department of Hydrocarbon Recovery Technology, PETRONAS Research Sdn Bhd, Lot 3288 & 3299, Off Jalan Ayer Hitam, Kawasan Institusi Bangi, Bandar Baru Bangi 43000, Malaysia
| | - Raja Noor Zaliha Raja Abd Rahman
- Enzyme and Microbial Technology Research Centre, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia; (N.E.R.); (M.S.M.A.); (N.H.A.K.); (M.M.); (W.L.); (S.S.)
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Science, Universiti Putra Malaysia (UPM), Serdang 43400, Malaysia
- Correspondence: ; Tel.: +60-192760708
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22
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Titanium or Biodegradable Osteosynthesis in Maxillofacial Surgery? In Vitro and In Vivo Performances. Polymers (Basel) 2022; 14:polym14142782. [PMID: 35890557 PMCID: PMC9316877 DOI: 10.3390/polym14142782] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/30/2022] [Accepted: 07/02/2022] [Indexed: 02/06/2023] Open
Abstract
Osteosynthesis systems are used to fixate bone segments in maxillofacial surgery. Titanium osteosynthesis systems are currently the gold standard. However, the disadvantages result in symptomatic removal in up to 40% of cases. Biodegradable osteosynthesis systems, composed of degradable polymers, could reduce the need for removal of osteosynthesis systems while avoiding the aforementioned disadvantages of titanium osteosyntheses. However, disadvantages of biodegradable systems include decreased mechanical properties and possible foreign body reactions. In this review, the literature that focused on the in vitro and in vivo performances of biodegradable and titanium osteosyntheses is discussed. The focus was on factors underlying the favorable clinical outcome of osteosyntheses, including the degradation characteristics of biodegradable osteosyntheses and the host response they elicit. Furthermore, recommendations for clinical usage and future research are given. Based on the available (clinical) evidence, biodegradable copolymeric osteosyntheses are a viable alternative to titanium osteosyntheses when applied to treat maxillofacial trauma, with similar efficacy and significantly lower symptomatic osteosynthesis removal. For orthognathic surgery, biodegradable copolymeric osteosyntheses are a valid alternative to titanium osteosyntheses, but a longer operation time is needed. An osteosynthesis system composed of an amorphous copolymer, preferably using ultrasound welding with well-contoured shapes and sufficient mechanical properties, has the greatest potential as a biocompatible biodegradable copolymeric osteosynthesis system. Future research should focus on surface modifications (e.g., nanogel coatings) and novel biodegradable materials (e.g., magnesium alloys and silk) to address the disadvantages of current osteosynthesis systems.
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23
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Silk Fibroin-Based Biomaterials for Tissue Engineering Applications. Molecules 2022; 27:molecules27092757. [PMID: 35566110 PMCID: PMC9103528 DOI: 10.3390/molecules27092757] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/08/2022] [Accepted: 04/21/2022] [Indexed: 12/21/2022] Open
Abstract
Tissue engineering (TE) involves the combination of cells with scaffolding materials and appropriate growth factors in order to regenerate or replace damaged and degenerated tissues and organs. The scaffold materials serve as templates for tissue formation and play a vital role in TE. Among scaffold materials, silk fibroin (SF), a naturally occurring protein, has attracted great attention in TE applications due to its excellent mechanical properties, biodegradability, biocompatibility, and bio-absorbability. SF is usually dissolved in an aqueous solution and can be easily reconstituted into different forms, including films, mats, hydrogels, and sponges, through various fabrication techniques, including spin coating, electrospinning, freeze drying, and supercritical CO2-assisted drying. Furthermore, to facilitate the fabrication of more complex SF-based scaffolds, high-precision techniques such as micro-patterning and bio-printing have been explored in recent years. These processes contribute to the diversity of surface area, mean pore size, porosity, and mechanical properties of different silk fibroin scaffolds and can be used in various TE applications to provide appropriate morphological and mechanical properties. This review introduces the physicochemical and mechanical properties of SF and looks into a range of SF-based scaffolds that have recently been developed. The typical applications of SF-based scaffolds for TE of bone, cartilage, teeth and mandible tissue, cartilage, skeletal muscle, and vascular tissue are highlighted and discussed followed by a discussion of issues to be addressed in future studies.
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Benecke L, Chen Z, Zeidler-Rentzsch I, von Witzleben M, Bornitz M, Zahnert T, Neudert M, Cherif C, Aibibu D. Development of electrospun, biomimetic tympanic membrane implants with tunable mechanical and oscillatory properties for myringoplasty. Biomater Sci 2022; 10:2287-2301. [PMID: 35363238 DOI: 10.1039/d1bm01815a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Most commonly, autologous grafts are used in tympanic membrane (TM) reconstruction. However, apart from the limited availability and the increased surgical risk, they cannot replicate the full functionality of the human TM properly. Hence, biomimetic synthetic TM implants have been developed in our project to overcome these drawbacks. These innovative TM implants are made from synthetic biopolymer polycaprolactone (PCL) and silk fibroin (SF) by electrospinning technology. Static and dynamic experiments have shown that the mechanical and oscillatory behavior of the TM implants can be tuned by adjusting the solution concentration, the SF and PCL mixing ratio and the electrospinning parameters. In addition, candidates for TM implants could have comparable acousto-mechanical properties to human TMs. Finally, these candidates were further validated in in vitro experiments by performing TM reconstruction in human cadaver temporal bones. The reconstructed TM with SF-PCL blend membranes fully recovered the acoustic vibration when the perforation was smaller than 50%. Furthermore, the handling, medium adhesion and transparency of the developed TM implants were similar to those of human TMs.
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Affiliation(s)
- Lukas Benecke
- Technische Universität Dresden, Faculty of Mechanical Science and Engineering, Institute of Textile Machinery and High Performance Material Technology, Breitscheidstraße 78, 01237 Dresden, Germany.
| | - Zhaoyu Chen
- Technische Universität Dresden, Carl Gustav Carus Faculty of Medicine, Department of Otorhinolaryngology, Head and Neck Surgery, Ear Research Center Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Ines Zeidler-Rentzsch
- Technische Universität Dresden, Carl Gustav Carus Faculty of Medicine, Department of Otorhinolaryngology, Head and Neck Surgery, Ear Research Center Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Max von Witzleben
- Technische Universität Dresden, Carl Gustav Carus Faculty of Medicine, Center for Translational Bone, Joint and Soft Tissue Research, Fetscherstraße 74, 01307 Dresden, Germany
| | - Matthias Bornitz
- Technische Universität Dresden, Carl Gustav Carus Faculty of Medicine, Department of Otorhinolaryngology, Head and Neck Surgery, Ear Research Center Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Thomas Zahnert
- Technische Universität Dresden, Carl Gustav Carus Faculty of Medicine, Department of Otorhinolaryngology, Head and Neck Surgery, Ear Research Center Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Marcus Neudert
- Technische Universität Dresden, Carl Gustav Carus Faculty of Medicine, Department of Otorhinolaryngology, Head and Neck Surgery, Ear Research Center Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Chokri Cherif
- Technische Universität Dresden, Faculty of Mechanical Science and Engineering, Institute of Textile Machinery and High Performance Material Technology, Breitscheidstraße 78, 01237 Dresden, Germany.
| | - Dilbar Aibibu
- Technische Universität Dresden, Faculty of Mechanical Science and Engineering, Institute of Textile Machinery and High Performance Material Technology, Breitscheidstraße 78, 01237 Dresden, Germany.
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25
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Torsahakul C, Israsena N, Khramchantuk S, Ratanavaraporn J, Dhitavat S, Rodprasert W, Nantavisai S, Sawangmake C. Bio-fabrication of stem-cell-incorporated corneal epithelial and stromal equivalents from silk fibroin and gelatin-based biomaterial for canine corneal regeneration. PLoS One 2022; 17:e0263141. [PMID: 35120168 PMCID: PMC8815981 DOI: 10.1371/journal.pone.0263141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 01/12/2022] [Indexed: 01/15/2023] Open
Abstract
Corneal grafts are the imperative clinical treatment for canine corneal blindness. To serve the growing demand, this study aimed to generate tissue-engineered canine cornea in part of the corneal epithelium and underlying stroma based on canine limbal epithelial stem cells (cLESCs) seeded silk fibroin/gelatin (SF/G) film and canine corneal stromal stem cells (cCSSCs) seeded SF/G scaffold, respectively. Both cell types were successfully isolated by collagenase I. SF/G corneal films and stromal scaffolds served as the prospective substrates for cLESCs and cCSSCs by promoting cell adhesion, cell viability, and cell proliferation. The results revealed the upregulation of tumor protein P63 (P63) and ATP-binding cassette super-family G member 2 (Abcg2) of cLESCs as well as Keratocan (Kera), Lumican (Lum), aldehyde dehydrogenase 3 family member A1 (Aldh3a1) and Aquaporin 1 (Aqp1) of differentiated keratocytes. Moreover, immunohistochemistry illustrated the positive staining of tumor protein P63 (P63), aldehyde dehydrogenase 3 family member A1 (Aldh3a1), lumican (Lum) and collagen I (Col-I), which are considerable for native cornea. This study manifested a feasible platform to construct tissue-engineered canine cornea for functional grafts and positively contributed to the body of knowledge related to canine corneal stem cells.
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Affiliation(s)
- Chutirat Torsahakul
- Graduate program in Veterinary Bioscience, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Nipan Israsena
- Stem Cell and Cell Therapy Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Supaporn Khramchantuk
- Excellence Center for Stem Cell and Cell Therapy, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
| | - Juthamas Ratanavaraporn
- Biomedical Engineering Program, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
- Biomedical Engineering Research Center, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
- Biomedical Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
| | - Sirakarnt Dhitavat
- Biochemistry Unit, Department of Physiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Watchareewan Rodprasert
- Veterinary Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Sirirat Nantavisai
- Veterinary Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Academic Affairs, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Chenphop Sawangmake
- Veterinary Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Department of Pharmacology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence for Regenerative Dentistry (CERD), Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
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26
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Li C, Wu J, Shi H, Xia Z, Sahoo JK, Yeo J, Kaplan DL. Fiber-Based Biopolymer Processing as a Route toward Sustainability. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2105196. [PMID: 34647374 PMCID: PMC8741650 DOI: 10.1002/adma.202105196] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/04/2021] [Indexed: 05/02/2023]
Abstract
Some of the most abundant biomass on earth is sequestered in fibrous biopolymers like cellulose, chitin, and silk. These types of natural materials offer unique and striking mechanical and functional features that have driven strong interest in their utility for a range of applications, while also matching environmental sustainability needs. However, these material systems are challenging to process in cost-competitive ways to compete with synthetic plastics due to the limited options for thermal processing. This results in the dominance of solution-based processing for fibrous biopolymers, which presents challenges for scaling, cost, and consistency in outcomes. However, new opportunities to utilize thermal processing with these types of biopolymers, as well as fibrillation approaches, can drive renewed opportunities to bridge this gap between synthetic plastic processing and fibrous biopolymers, while also holding sustainability goals as critical to long-term successful outcomes.
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Affiliation(s)
- Chunmei Li
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Junqi Wu
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Haoyuan Shi
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca NY 14853, USA
| | - Zhiyu Xia
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Jugal Kishore Sahoo
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Jingjie Yeo
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca NY 14853, USA
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
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27
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Liu X, Sun Y, Chen B, Li Y, Zhu P, Wang P, Yan S, Li Y, Yang F, Gu N. Novel magnetic silk fibroin scaffolds with delayed degradation for potential long-distance vascular repair. Bioact Mater 2022; 7:126-143. [PMID: 34466722 PMCID: PMC8379427 DOI: 10.1016/j.bioactmat.2021.04.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 01/09/2023] Open
Abstract
Although with the good biological properties, silk fibroin (SF) is immensely restrained in long-distance vascular defect repair due to its relatively fast degradation and inferior mechanical properties. It is necessary to construct a multifunctional composite scaffold based on SF. In this study, a novel magnetic SF scaffold (MSFCs) was prepared by an improved infiltration method. Compared with SF scaffold (SFC), MSFCs were found to have better crystallinity, magnetocaloric properties, and mechanical strength, which was ascribed to the rational introduction of iron-based magnetic nanoparticles (MNPs). Moreover, in vivo and in vitro experiments demonstrated that the degradation of MSFCs was significantly extended. The mechanism of delayed degradation was correlated with the dual effect that was the newly formed hydrogen bonds between SFC and MNPs and the complexing to tyrosine (Try) to inhibit hydrolase by internal iron atoms. Besides, the β-crystallization of protein in MSFCs was increased with the rise of iron concentration, proving the beneficial effect after MNPS doped. Furthermore, although macrophages could phagocytose the released MNPs, it did not affect their function, and even a reasonable level might cause some cytokines to be upregulated. Finally, in vitro and in vivo studies demonstrated that MSFCs showed excellent biocompatibility and the growth promotion effect on CD34-labeled vascular endothelial cells (VECs). In conclusion, we confirm that the doping of MNPs can significantly reduce the degradation of SFC and thus provide an innovative perspective of multifunctional biocomposites for tissue engineering.
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Affiliation(s)
- Xin Liu
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, PR China
| | - Yuxiang Sun
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, PR China
| | - Bo Chen
- Materials Science and Devices Institute, Suzhou University of Science and Technology, 1 Kerui Road, Suzhou, 215009, PR China
| | - Yan Li
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, PR China
| | - Peng Zhu
- State Key Laboratory of Quality Research in Chinese Medicines, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, 999078, PR China
| | - Peng Wang
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, PR China
| | - Sen Yan
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, PR China
| | - Yao Li
- College of Social Sciences, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - Fang Yang
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, PR China
| | - Ning Gu
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, PR China
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28
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Chen M, Qin J, Lu S, Zhang F, Zuo B. Robust Nanofiber Mats Exfoliated From Tussah Silk for Potential Biomedical Applications. Front Bioeng Biotechnol 2021; 9:746016. [PMID: 34926415 PMCID: PMC8677428 DOI: 10.3389/fbioe.2021.746016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 11/08/2021] [Indexed: 02/05/2023] Open
Abstract
Nanofibers as elements for bioscaffolds are pushing the development of tissue engineering. In this study, tussah silk was mechanically disintegrated into nanofibers dispersed in aqueous solution which was cast to generate tussah silk fibroin (TSF) nanofiber mats. The effect of treatment time on the morphology, structure, and mechanical properties of nanofiber mats was examined. SEM indicated decreasing diameter of the nanofiber with shearing time, and the diameter of the nanofiber was 139.7 nm after 30 min treatment. These nanofiber mats exhibited excellent mechanical properties; the breaking strength increased from 26.31 to 72.68 MPa with the decrease of fiber diameter from 196.5 to 139.7 nm. The particulate debris was observed on protease XIV degraded nanofiber mats, and the weight loss was greater than 10% after 30 days in vitro degradation. The cell compatibility experiment confirmed adhesion and spreading of NIH-3T3 cells and enhanced cell proliferation on TSF nanofiber mats compared to that on Bombyx mori silk nanofiber mats. In conclusion, results indicate that TSF nanofiber mats prepared in this study are mechanically robust, slow biodegradable, and biocompatible materials, and have promising application in regenerative medicine.
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Affiliation(s)
- Ming Chen
- The Affiliated Stomatological Hospital of Soochow University, Suzhou Stomatological Hospital, Suzhou, China
- College of Textile and Clothing Engineering, Soochow University, National Engineering Laboratory for Modern Silk, Suzhou, China
| | - Jianzhong Qin
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, China
- State Key Laboratory of Biotherapy, West China Hospital, West China Medicine School, Sichuan University, Chengdu, China
| | - Shijun Lu
- The Affiliated Stomatological Hospital of Soochow University, Suzhou Stomatological Hospital, Suzhou, China
| | - Feng Zhang
- College of Textile and Clothing Engineering, Soochow University, National Engineering Laboratory for Modern Silk, Suzhou, China
| | - Baoqi Zuo
- College of Textile and Clothing Engineering, Soochow University, National Engineering Laboratory for Modern Silk, Suzhou, China
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29
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Florczak A, Deptuch T, Kucharczyk K, Dams-Kozlowska H. Systemic and Local Silk-Based Drug Delivery Systems for Cancer Therapy. Cancers (Basel) 2021; 13:5389. [PMID: 34771557 PMCID: PMC8582423 DOI: 10.3390/cancers13215389] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/22/2021] [Accepted: 10/25/2021] [Indexed: 12/26/2022] Open
Abstract
For years, surgery, radiotherapy, and chemotherapy have been the gold standards to treat cancer, although continuing research has sought a more effective approach. While advances can be seen in the development of anticancer drugs, the tools that can improve their delivery remain a challenge. As anticancer drugs can affect the entire body, the control of their distribution is desirable to prevent systemic toxicity. The application of a suitable drug delivery platform may resolve this problem. Among other materials, silks offer many advantageous properties, including biodegradability, biocompatibility, and the possibility of obtaining a variety of morphological structures. These characteristics allow the exploration of silk for biomedical applications and as a platform for drug delivery. We have reviewed silk structures that can be used for local and systemic drug delivery for use in cancer therapy. After a short description of the most studied silks, we discuss the advantages of using silk for drug delivery. The tables summarize the descriptions of silk structures for the local and systemic transport of anticancer drugs. The most popular techniques for silk particle preparation are presented. Further prospects for using silk as a drug carrier are considered. The application of various silk biomaterials can improve cancer treatment by the controllable delivery of chemotherapeutics, immunotherapeutics, photosensitizers, hormones, nucleotherapeutics, targeted therapeutics (e.g., kinase inhibitors), and inorganic nanoparticles, among others.
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Affiliation(s)
- Anna Florczak
- Department of Cancer Immunology, Poznan University of Medical Sciences, 61-866 Poznan, Poland; (A.F.); (T.D.); (K.K.)
- Department of Diagnostics and Cancer Immunology, Greater Poland Cancer Centre, 61-866 Poznan, Poland
| | - Tomasz Deptuch
- Department of Cancer Immunology, Poznan University of Medical Sciences, 61-866 Poznan, Poland; (A.F.); (T.D.); (K.K.)
- Department of Diagnostics and Cancer Immunology, Greater Poland Cancer Centre, 61-866 Poznan, Poland
| | - Kamil Kucharczyk
- Department of Cancer Immunology, Poznan University of Medical Sciences, 61-866 Poznan, Poland; (A.F.); (T.D.); (K.K.)
- Department of Diagnostics and Cancer Immunology, Greater Poland Cancer Centre, 61-866 Poznan, Poland
| | - Hanna Dams-Kozlowska
- Department of Cancer Immunology, Poznan University of Medical Sciences, 61-866 Poznan, Poland; (A.F.); (T.D.); (K.K.)
- Department of Diagnostics and Cancer Immunology, Greater Poland Cancer Centre, 61-866 Poznan, Poland
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30
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Abstract
Silk fibroin has been explored as a suitable biomaterial due to its biocompatibility, tunable degradability, low toxicity, and mechanical properties. To harness silk fibroin's innate properties, it is purified from native silkworm cocoons by removing proteins and debris that have the potential to cause inflammatory responses. Typically, within the purification and fabrication steps, chemical solvents, energy-intensive equipment, and large quantities of water are used to reverse engineer silk fibroin into an aqueous solution and then process into the final material format. Gentler, green methods for extraction and fabrication have been developed that reduce or remove the need for harmful chemical additives and energy-inefficient equipment while still producing mechanically robust biomaterials. This review will focus on the alternative green processing and fabrication methods that have proven useful in creating silk fibroin materials for a range of applications including consumer and medical materials.
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Affiliation(s)
- Megan K DeBari
- Materials Science and Engineering Department, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Claude I King
- Biomedical Engineering Department, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Tahlia A Altgold
- Materials Science and Engineering Department, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.,Biomedical Engineering Department, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Rosalyn D Abbott
- Biomedical Engineering Department, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
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31
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Gupta SS, Mishra V, Mukherjee MD, Saini P, Ranjan KR. Amino acid derived biopolymers: Recent advances and biomedical applications. Int J Biol Macromol 2021; 188:542-567. [PMID: 34384802 DOI: 10.1016/j.ijbiomac.2021.08.036] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 08/04/2021] [Accepted: 08/04/2021] [Indexed: 01/19/2023]
Abstract
Over the past few years, amino acids (AA) have emerged as promising biomaterials for the synthesis of functional polymers. Owing to the diversity of functional groups in amino acids, various polymerization methods may be used to make a wide range of well-defined functional amino-acid/peptide-based optically active polymers with varying polymer lengths, compositions, and designs. When incorporated with chirality and self-assembly, they offer a wide range of applications and are particularly appealing in the field of drug delivery, tissue engineering, and biosensing. There are several classes of these polymers that include polyamides (PA), polyesters (PE), poly(ester-amide)s (PEA)s, polyurethanes (PU)s, poly(depsipeptide)s (PDP)s, etc. They offer the ability to control functionality, conjugation, crosslinking, stimuli responsiveness, and tuneable mechanical/thermal properties. In this review, we present the recent advancements in the synthesis strategies for obtaining these amino acid-derived bio-macromolecules, their self-assembly properties, and the wealth of prevalent applications.
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Affiliation(s)
| | - Vivek Mishra
- Amity Institute of Click Chemistry Research and Studies, Amity University Uttar Pradesh, NOIDA, India.
| | | | | | - Kumar Rakesh Ranjan
- Amity Institute of Applied Sciences, Amity University Uttar Pradesh, NOIDA, India.
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32
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Jameson JF, Pacheco MO, Butler JE, Stoppel WL. Estimating Kinetic Rate Parameters for Enzymatic Degradation of Lyophilized Silk Fibroin Sponges. Front Bioeng Biotechnol 2021; 9:664306. [PMID: 34295878 PMCID: PMC8290342 DOI: 10.3389/fbioe.2021.664306] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 05/31/2021] [Indexed: 11/25/2022] Open
Abstract
Sponge-like biomaterials formed from silk fibroin are promising as degradable materials in clinical applications due to their controllable breakdown into simple amino acids or small peptides in vivo. Silk fibroin, isolated from Bombyx mori silkworm cocoons, can be used to form sponge-like materials with a variety of tunable parameters including the elastic modulus, porosity and pore size, and level of nanocrystalline domains. These parameters can be independently tuned during formulation resulting in a wide parameter space and set of final materials. Determining the mechanism and rate constants for biomaterial degradation of these tunable silk materials would allow scientists to evaluate and predict the biomaterial performance for the large array of tissue engineering applications and patient ailments a priori. We first measured in vitro degradation rates of silk sponges using common protein-degrading enzymes such as Proteinase K and Protease XIV. The concentration of the enzyme in solution was varied (1, 0.1, 0.01 U/mL) along with one silk sponge formulation parameter: the level of crystallinity within the sponge. Additionally, two experimental degradation methods were evaluated, termed continuous and discrete degradation methods. Silk concentration, polymer chain length and scaffold pore size were held constant during experimentation and kinetic parameter estimation. Experimentally, we observed that the enzyme itself, enzyme concentration within the bulk solution, and the sponge fabrication water annealing time were the major experimental parameters dictating silk sponge degradation in our experimental design. We fit the experimental data to two models, a Michaelis-Menten kinetic model and a modified first order kinetic model. Weighted, non-linear least squares analysis was used to determine the parameters from the data sets and Monte-Carlo simulations were utilized to obtain estimates of the error. We found that modified first order reaction kinetics fit the time-dependent degradation of lyophilized silk sponges and we obtained first order-like rate constants. These results represent the first investigations into determining kinetic parameters to predict lyophilized silk sponge degradation rates and can be a tool for future mathematical representations of silk biomaterial degradation.
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Affiliation(s)
- Julie F Jameson
- Department of Chemical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL, United States
| | - Marisa O Pacheco
- Department of Chemical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL, United States
| | - Jason E Butler
- Department of Chemical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL, United States
| | - Whitney L Stoppel
- Department of Chemical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL, United States
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33
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Deptuch T, Florczak A, Lewandowska A, Leporowska E, Penderecka K, Marszalek A, Mackiewicz A, Dams-Kozlowska H. MS1-type bioengineered spider silk nanoparticles do not exhibit toxicity in an in vivo mouse model. Nanomedicine (Lond) 2021; 16:1553-1565. [PMID: 34165326 DOI: 10.2217/nnm-2021-0029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background: Due to factors such as silk sequence, purification, degradation, morphology and functionalization, each silk variant should be individually tested for potential toxicity. Aim: In vivo toxicological evaluation of the previously characterized bioengineered H2.1MS1 spider silk particles that can deliver chemotherapeutics to human epidermal growth factor receptor 2-positive breast cancer. Materials & methods: Silk nanoparticles (H2.1MS1 and control MS1) were administered intravenously to mice, and then the organismal response was assessed. Several parameters of acute and subchronic toxicity were analyzed, including animal mortality and behavior, nanosphere biodistribution, and histopathological analysis of internal organs. Also, the complete blood count, as well as the concentration of biochemical parameters and cytokines in the serum, were examined. Results & conclusion: No toxicity of the systemically administrated silk nanosphere was observed, indicating their potential application in biomedicine.
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Affiliation(s)
- Tomasz Deptuch
- Chair of Medical Biotechnology, Poznan University of Medical Sciences, 15 Garbary St, 61-866, Poznan, Poland.,Department of Diagnostics & Cancer Immunology, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland
| | - Anna Florczak
- Chair of Medical Biotechnology, Poznan University of Medical Sciences, 15 Garbary St, 61-866, Poznan, Poland.,Department of Diagnostics & Cancer Immunology, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland
| | - Anna Lewandowska
- Department of Tumor Pathology, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland.,Department of Tumor Pathology & Prophylaxis, Poznan University of Medical Sciences, 15 Garbary St, 61-866, Poznan, Poland
| | - Ewa Leporowska
- Department of Laboratory Diagnostics, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland
| | - Karolina Penderecka
- Chair of Medical Biotechnology, Poznan University of Medical Sciences, 15 Garbary St, 61-866, Poznan, Poland.,Department of Diagnostics & Cancer Immunology, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland
| | - Andrzej Marszalek
- Department of Tumor Pathology, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland.,Department of Tumor Pathology & Prophylaxis, Poznan University of Medical Sciences, 15 Garbary St, 61-866, Poznan, Poland
| | - Andrzej Mackiewicz
- Chair of Medical Biotechnology, Poznan University of Medical Sciences, 15 Garbary St, 61-866, Poznan, Poland.,Department of Diagnostics & Cancer Immunology, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland
| | - Hanna Dams-Kozlowska
- Chair of Medical Biotechnology, Poznan University of Medical Sciences, 15 Garbary St, 61-866, Poznan, Poland.,Department of Diagnostics & Cancer Immunology, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland
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34
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Ding Z, Cheng W, Mia MS, Lu Q. Silk Biomaterials for Bone Tissue Engineering. Macromol Biosci 2021; 21:e2100153. [PMID: 34117836 DOI: 10.1002/mabi.202100153] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/17/2021] [Indexed: 12/14/2022]
Abstract
Silk is a natural fibrous polymer with application potential in regenerative medicine. Increasing interest remains for silk materials in bone tissue engineering due to their characteristics in biocompatibility, biodegradability and mechanical properties. Plenty of the in vitro and in vivo studies confirmed the advantages of silk in accelerating bone regeneration. Silk is processed into scaffolds, hydrogels, and films to facilitate different bone regenerative applications. Bioactive factors such as growth factors and drugs, and stem cells are introduced to silk-based matrices to create friendly and osteogenic microenvironments, directing cell behaviors and bone regeneration. The recent progress in silk-based bone biomaterials is discussed and focused on different fabrication and functionalization methods related to osteogenesis. The challenges and potential targets of silk bone materials are highlighted to evaluate the future development of silk-based bone materials.
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Affiliation(s)
- Zhaozhao Ding
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
| | - Weinan Cheng
- Department of Orthopedics, The First Affiliated Hospital of Xiamen University, Xiamen, 361000, P. R. China
| | - Md Shipan Mia
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
| | - Qiang Lu
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, P. R. China
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35
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Reddy SS, Pal S, Ghosh S, Prabhakaran EN. Hydrogen Bond Surrogate-Constrained Dynamic Antiparallel β-Sheets. Chembiochem 2021; 22:2111-2115. [PMID: 33751754 DOI: 10.1002/cbic.202100028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/05/2021] [Indexed: 11/06/2022]
Abstract
Antiparallel β-sheets are important secondary structures within proteins that equilibrate with random-coil states; however, little is known about the exact dynamics of this process. Here, the first dynamic β-sheet models that mimic this equilibrium have been designed by using an H-bond surrogate that introduces constraint and torque into a tertiary amide bond. 2D NMR data sufficiently reveal the structure, kinetics, and thermodynamics of the folding process, thereby leading the way to similar analysis in isolated biologically relevant β-sheets.
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Affiliation(s)
- Sravanthi S Reddy
- Department of Organic Chemistry, Indian Institution of Science, 560 012, Bangalore, Karnataka, India
| | - Sunit Pal
- Department of Organic Chemistry, Indian Institution of Science, 560 012, Bangalore, Karnataka, India
| | - Sudip Ghosh
- Department of Organic Chemistry, Indian Institution of Science, 560 012, Bangalore, Karnataka, India
| | - Erode N Prabhakaran
- Department of Organic Chemistry, Indian Institution of Science, 560 012, Bangalore, Karnataka, India
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36
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Zhao M, Qi Z, Tao X, Newkirk C, Hu X, Lu S. Chemical, Thermal, Time, and Enzymatic Stability of Silk Materials with Silk I Structure. Int J Mol Sci 2021; 22:ijms22084136. [PMID: 33923636 PMCID: PMC8073524 DOI: 10.3390/ijms22084136] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 04/10/2021] [Accepted: 04/13/2021] [Indexed: 02/07/2023] Open
Abstract
The crystalline structure of silk fibroin Silk I is generally considered to be a metastable structure; however, there is no definite conclusion under what circumstances this crystalline structure is stable or the crystal form will change. In this study, silk fibroin solution was prepared from B. Mori silkworm cocoons, and a combined method of freeze-crystallization and freeze-drying at different temperatures was used to obtain stable Silk I crystalline material and uncrystallized silk material, respectively. Different concentrations of methanol and ethanol were used to soak the two materials with different time periods to investigate the effect of immersion treatments on the crystalline structure of silk fibroin materials. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman scattering spectroscopy (Raman), Scanning electron microscope (SEM), and Thermogravimetric analysis (TGA) were used to characterize the structure of silk fibroin before and after the treatments. The results showed that, after immersion treatments, uncrystallized silk fibroin material with random coil structure was transformed into Silk II crystal structure, while the silk material with dominated Silk I crystal structure showed good long-term stability without obvious transition to Silk II crystal structure. α-chymotrypsin biodegradation study showed that the crystalline structure of silk fibroin Silk I materials is enzymatically degradable with a much lower rate compared to uncrystallized silk materials. The crystalline structure of Silk I materials demonstrate a good long-term stability, endurance to alcohol sterilization without structural changes, and can be applied to many emerging fields, such as biomedical materials, sustainable materials, and biosensors.
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Affiliation(s)
- Meihui Zhao
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China; (M.Z.); (Z.Q.); (X.T.)
| | - Zhenzhen Qi
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China; (M.Z.); (Z.Q.); (X.T.)
| | - Xiaosheng Tao
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China; (M.Z.); (Z.Q.); (X.T.)
| | - Chad Newkirk
- Department of Physics and Astronomy, Rowan University, Glassboro, NJ 08028, USA;
- Department of Molecular and Cellular Biosciences, Rowan University, Glassboro, NJ 08028, USA
| | - Xiao Hu
- Department of Physics and Astronomy, Rowan University, Glassboro, NJ 08028, USA;
- Department of Molecular and Cellular Biosciences, Rowan University, Glassboro, NJ 08028, USA
- Correspondence: (X.H.); (S.L.)
| | - Shenzhou Lu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China; (M.Z.); (Z.Q.); (X.T.)
- Correspondence: (X.H.); (S.L.)
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37
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D’Souza AR, Necelis MR, Kulesha A, Caputo GA, Makhlynets OV. Beneficial Impacts of Incorporating the Non-Natural Amino Acid Azulenyl-Alanine into the Trp-Rich Antimicrobial Peptide buCATHL4B. Biomolecules 2021; 11:421. [PMID: 33809374 PMCID: PMC8001250 DOI: 10.3390/biom11030421] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/01/2021] [Accepted: 03/09/2021] [Indexed: 12/15/2022] Open
Abstract
Antimicrobial peptides (AMPs) present a promising scaffold for the development of potent antimicrobial agents. Substitution of tryptophan by non-natural amino acid Azulenyl-Alanine (AzAla) would allow studying the mechanism of action of AMPs by using unique properties of this amino acid, such as ability to be excited separately from tryptophan in a multi-Trp AMPs and environmental insensitivity. In this work, we investigate the effect of Trp→AzAla substitution in antimicrobial peptide buCATHL4B (contains three Trp side chains). We found that antimicrobial and bactericidal activity of the original peptide was preserved, while cytocompatibility with human cells and proteolytic stability was improved. We envision that AzAla will find applications as a tool for studies of the mechanism of action of AMPs. In addition, incorporation of this non-natural amino acid into AMP sequences could enhance their application properties.
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Affiliation(s)
- Areetha R. D’Souza
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY 13244, USA; (A.R.D.); (A.K.)
| | - Matthew R. Necelis
- Department of Chemistry & Biochemistry, Rowan University, Glassboro, NJ 08028, USA; (M.R.N.); (G.A.C.)
| | - Alona Kulesha
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY 13244, USA; (A.R.D.); (A.K.)
| | - Gregory A. Caputo
- Department of Chemistry & Biochemistry, Rowan University, Glassboro, NJ 08028, USA; (M.R.N.); (G.A.C.)
- Department of Molecular & Cellular Biosciences, Rowan University, Glassboro, NJ 08028, USA
| | - Olga V. Makhlynets
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY 13244, USA; (A.R.D.); (A.K.)
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38
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Tomoda BT, Pacheco MS, Abranches YB, Viganó J, Perrechil F, De Moraes MA. Assessing the Influence of Dyes Physico-Chemical Properties on Incorporation and Release Kinetics in Silk Fibroin Matrices. Polymers (Basel) 2021; 13:polym13050798. [PMID: 33807825 PMCID: PMC7961930 DOI: 10.3390/polym13050798] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/26/2021] [Accepted: 03/01/2021] [Indexed: 01/18/2023] Open
Abstract
Silk fibroin (SF) is a promising and versatile biodegradable protein for biomedical applications. This study aimed to develop a prolonged release device by incorporating SF microparticles containing dyes into SF hydrogels. The influence of dyes on incorporation and release kinetics in SF based devices were evaluated regarding their hydrophilicity, molar mass, and cationic/anionic character. Hydrophobic and cationic dyes presented high encapsulation efficiency, probably related to electrostatic and hydrophobic interactions with SF. The addition of SF microparticles in SF hydrogels was an effective method to prolong the release, increasing the release time by 10-fold.
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39
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Uddin MG, Allardyce BJ, Rashida N, Rajkhowa R. Mechanical, structural and biodegradation characteristics of fibrillated silk fibres and papers. Int J Biol Macromol 2021; 179:20-32. [PMID: 33667557 DOI: 10.1016/j.ijbiomac.2021.02.211] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/16/2021] [Accepted: 02/27/2021] [Indexed: 11/15/2022]
Abstract
We characterised fibres and papers of microfibrillated silk from Bombyx mori produced by mechanical and enzymatic process. Milling increased the specific surface area of fibres from 1.5 to 8.5 m2/g and that enzymatic pre-treatment increased it further to 16.5 m2/g. These fibrils produced a uniform, significantly strong (tenacity 55 Nm/g) and stiff (Young's modulus > 2 GPa) papers. Enzymatic pre-treatment did not reduce molecular weight and tensile strength of papers but significantly improved fibrillation. Silk remained highly crystalline throughout the fibrillation process. Protease biodegradation was more rapid after fibrillation. Biodegradation was impacted by structural change due to enzymatic pre-treatment during the fibrillation. Biodegraded silk had much higher thermal degradation temperature. The unique combination of high strength, slow yet predicable degradation and controllable wicking properties make the materials ideally suited to biomedical and healthcare applications.
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Affiliation(s)
- Mohammad Gias Uddin
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia
| | | | - Nigar Rashida
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia
| | - Rangam Rajkhowa
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia.
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40
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Farokhi M, Aleemardani M, Solouk A, Mirzadeh H, Teuschl AH, Redl H. Crosslinking strategies for silk fibroin hydrogels: promising biomedical materials. Biomed Mater 2021; 16:022004. [PMID: 33594992 DOI: 10.1088/1748-605x/abb615] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Due to their strong biomimetic potential, silk fibroin (SF) hydrogels are impressive candidates for tissue engineering, due to their tunable mechanical properties, biocompatibility, low immunotoxicity, controllable biodegradability, and a remarkable capacity for biomaterial modification and the realization of a specific molecular structure. The fundamental chemical and physical structure of SF allows its structure to be altered using various crosslinking strategies. The established crosslinking methods enable the formation of three-dimensional (3D) networks under physiological conditions. There are different chemical and physical crosslinking mechanisms available for the generation of SF hydrogels (SFHs). These methods, either chemical or physical, change the structure of SF and improve its mechanical stability, although each method has its advantages and disadvantages. While chemical crosslinking agents guarantee the mechanical strength of SFH through the generation of covalent bonds, they could cause some toxicity, and their usage is not compatible with a cell-friendly technology. On the other hand, physical crosslinking approaches have been implemented in the absence of chemical solvents by the induction of β-sheet conformation in the SF structure. Unfortunately, it is not easy to control the shape and properties of SFHs when using this method. The current review discusses the different crosslinking mechanisms of SFH in detail, in order to support the development of engineered SFHs for biomedical applications.
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Affiliation(s)
- Maryam Farokhi
- Biomedical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran. Maryam Farokhi and Mina Aleemardani contributed equally
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41
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Lee D, Park D, Kim I, Lee SW, Lee W, Hwang KS, Lee JH, Lee G, Yoon DS. Plasmonic nanoparticle amyloid corona for screening Aβ oligomeric aggregate-degrading drugs. Nat Commun 2021; 12:639. [PMID: 33504788 PMCID: PMC7840768 DOI: 10.1038/s41467-020-20611-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 11/30/2020] [Indexed: 12/12/2022] Open
Abstract
The generation of toxic amyloid β (Aβ) oligomers is a central feature of the onset and progression of Alzheimer's disease (AD). Drug discoveries for Aβ oligomer degradation have been hampered by the difficulty of Aβ oligomer purification and a lack of screening tools. Here, we report a plasmonic nanoparticle amyloid corona (PNAC) for quantifying the efficacy of Aβ oligomeric aggregate-degrading drugs. Our strategy is to monitor the drug-induced degradation of oligomeric aggregates by analyzing the colorimetric responses of PNACs. To test our strategy, we use Aβ-degrading proteases (protease XIV and MMP-9) and subsequently various small-molecule substances that have shown benefits in the treatment of AD. We demonstrate that this strategy with PNAC can identify effective drugs for eliminating oligomeric aggregates. Thus, this approach presents an appealing opportunity to reduce attrition problems in drug discovery for AD treatment.
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Affiliation(s)
- Dongtak Lee
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea
| | - Dongsung Park
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, Kyung Hee University, Seoul, 02447, South Korea
| | - Insu Kim
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea
| | - Sang Won Lee
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea
| | - Wonseok Lee
- Department of Control and Instrumentation Engineering, Korea University, Sejong, 30019, South Korea
| | - Kyo Seon Hwang
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, Kyung Hee University, Seoul, 02447, South Korea
| | - Jeong Hoon Lee
- Department of Electrical Engineering, Kwangwoon University, Seoul, 01897, South Korea.
| | - Gyudo Lee
- Department of Biotechnology and Bioinformatics, Korea University, Sejong, 30019, South Korea.
- Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology, Korea University, Sejong, 30019, South Korea.
| | - Dae Sung Yoon
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea.
- Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, South Korea.
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42
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Tanaka T, Abe Y, Cheng CJ, Tanaka R, Naito A, Asakura T. Development of Small-Diameter Elastin-Silk Fibroin Vascular Grafts. Front Bioeng Biotechnol 2021; 8:622220. [PMID: 33585421 PMCID: PMC7874157 DOI: 10.3389/fbioe.2020.622220] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 12/15/2020] [Indexed: 11/13/2022] Open
Abstract
Globally, increasing mortality from cardiovascular disease has become a problem in recent years. Vascular replacement has been used as a treatment for these diseases, but with blood vessels <6 mm in diameter, existing vascular grafts made of synthetic polymers can be occluded by thrombus formation or intimal hyperplasia. Therefore, the development of new artificial vascular grafts is desirable. In this study, we developed an elastin (EL)-silk fibroin (SF) double-raschel knitted vascular graft 1.5 mm in diameter. Water-soluble EL was prepared from insoluble EL by hydrolysis with oxalic acid. Compared to SF, EL was less likely to adhere to platelets, while vascular endothelial cells were three times more likely to adhere. SF artificial blood vessels densely packed with porous EL were fabricated, and these prevented the leakage of blood from the graft during implantation, while the migration of cells after implantation was promoted. Several kinds of 13C solid-state NMR spectra were observed with the EL-SF grafts in dry and hydrated states. It was noted that the EL molecules in the graft had very high mobility in the hydrated state. The EL-SF grafts were implanted into the abdominal aorta of rats to evaluate their patency and remodeling ability. No adverse reactions, such as bleeding at the time of implantation or disconnection of the sutured ends, were observed in the implanted grafts, and all were patent at the time of extraction. In addition, vascular endothelial cells were present on the graft's luminal surface 2 weeks after implantation. Therefore, we conclude that EL-SF artificial vascular grafts may be useful where small-diameter grafts are required.
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Affiliation(s)
- Takashi Tanaka
- Department of Veterinary Surgery, Tokyo University of Agriculture & Technology, Fuchu, Japan
| | - Yasuyuki Abe
- Department of Biotechnology, Tokyo University of Agriculture & Technology, Koganei, Japan
| | - Chieh-Jen Cheng
- Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Fujisawa, Japan
| | - Ryo Tanaka
- Department of Veterinary Surgery, Tokyo University of Agriculture & Technology, Fuchu, Japan
| | - Akira Naito
- Department of Biotechnology, Tokyo University of Agriculture & Technology, Koganei, Japan
| | - Tetsuo Asakura
- Department of Biotechnology, Tokyo University of Agriculture & Technology, Koganei, Japan
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43
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Biggi S, Bassani GA, Vincoli V, Peroni D, Bonaldo V, Biagiotti M, Belli R, Alessandrino A, Biasini E, Freddi G. Characterization of Physical, Mechanical, and Biological Properties of SilkBridge Nerve Conduit after Enzymatic Hydrolysis. ACS APPLIED BIO MATERIALS 2020; 3:8361-8374. [PMID: 35019608 DOI: 10.1021/acsabm.0c00613] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The in vitro degradation profile and the cytotoxicity of the degradation products of a silk fibroin (SF)-based nerve conduit (SilkBridge), with a complex three-layered wall architecture comprising both native and regenerated (electrospun) fibers, are reported. The bacterial protease type XIV from Streptomyces griseus was used as a hydrolytic agent at three different enzyme/substrate ratios (1:8, 1:80, and 1:800 w/w) to account for the different susceptibility to degradation of the native and regenerated components. The incubation time was extended up to 91 days. At fixed time points, the remaining device, the insoluble debris, and the incubation buffers containing soluble degradation products were separated and analyzed. The electrospun fibers forming the inner and outer layers of the conduit wall were almost completely degraded within 10 days of incubation at an enzyme/substrate ratio of 1:80 w/w. The progression of degradation was highlighted by the emergence of zones of erosion and discontinuity along the electrospun fibers, weakening of the electrospun layers, and decrease in resistance to compressive stress. Native SF microfibers forming the middle layer of the conduit wall displayed a higher resistance to enzymatic degradation. When incubated at an enzyme/substrate ratio of 1:8 w/w, the weight decreased gradually over the incubation time as a consequence of fiber erosion and fragmentation. Analogously, the tensile properties markedly decreased. Both spectroscopic and thermal analyses confirmed the gradual increase in the crystalline character of the fibers. The incubation buffers containing the soluble degradation products were subjected to cytotoxicity testing with human HEK293 cells and mouse neuroblastoma N2a cells. No detrimental effects on cell viability were observed, suggesting that the degradation products do not retain any toxic property. Finally, the mass spectrometry analysis of degradation products showed that the SF polypeptides recovered in the incubation buffers were representative of the aminoacidic sequence of the fibroin light chain and of the highly repetitive fibroin heavy chain, indicating that virtually the entire sequence of the fibroin protein constituent of SilkBridge was degraded.
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Affiliation(s)
- Silvia Biggi
- Dulbecco Telethon Laboratory of Prions and Amyloids, Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Via Sommarive 9, 38123 Povo, TN, Italy
| | | | | | - Daniele Peroni
- Mass Spectrometry (MS) Core Facility, Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Via Sommarive 9, 38123 Povo, TN, Italy
| | - Valerio Bonaldo
- Dulbecco Telethon Laboratory of Prions and Amyloids, Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Via Sommarive 9, 38123 Povo, TN, Italy
| | - Marco Biagiotti
- Silk Biomaterials Srl, Via Cavour 2, 22074 Lomazzo, Co, Italy
| | - Romina Belli
- Mass Spectrometry (MS) Core Facility, Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Via Sommarive 9, 38123 Povo, TN, Italy
| | | | - Emiliano Biasini
- Dulbecco Telethon Laboratory of Prions and Amyloids, Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Via Sommarive 9, 38123 Povo, TN, Italy
| | - Giuliano Freddi
- Silk Biomaterials Srl, Via Cavour 2, 22074 Lomazzo, Co, Italy
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Mu X, Sahoo JK, Cebe P, Kaplan DL. Photo-Crosslinked Silk Fibroin for 3D Printing. Polymers (Basel) 2020; 12:E2936. [PMID: 33316890 PMCID: PMC7763742 DOI: 10.3390/polym12122936] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/04/2020] [Accepted: 12/07/2020] [Indexed: 12/14/2022] Open
Abstract
Silk fibroin in material formats provides robust mechanical properties, and thus is a promising protein for 3D printing inks for a range of applications, including tissue engineering, bioelectronics, and bio-optics. Among the various crosslinking mechanisms, photo-crosslinking is particularly useful for 3D printing with silk fibroin inks due to the rapid kinetics, tunable crosslinking dynamics, light-assisted shape control, and the option to use visible light as a biocompatible processing condition. Multiple photo-crosslinking approaches have been applied to native or chemically modified silk fibroin, including photo-oxidation and free radical methacrylate polymerization. The molecular characteristics of silk fibroin, i.e., conformational polymorphism, provide a unique method for crosslinking and microfabrication via light. The molecular design features of silk fibroin inks and the exploitation of photo-crosslinking mechanisms suggest the exciting potential for meeting many biomedical needs in the future.
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Affiliation(s)
- Xuan Mu
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA; (X.M.); (J.K.S.)
| | - Jugal Kishore Sahoo
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA; (X.M.); (J.K.S.)
| | - Peggy Cebe
- Department of Physics and Astronomy, Tufts University, Medford, MA 02155, USA;
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA; (X.M.); (J.K.S.)
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Pham DT, Tiyaboonchai W. Fibroin nanoparticles: a promising drug delivery system. Drug Deliv 2020; 27:431-448. [PMID: 32157919 PMCID: PMC7144220 DOI: 10.1080/10717544.2020.1736208] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 02/20/2020] [Accepted: 02/25/2020] [Indexed: 01/13/2023] Open
Abstract
Fibroin is a dominant silk protein that possesses ideal properties as a biomaterial for drug delivery. Recently, the development of fibroin nanoparticles (FNPs) for various biomedical applications has been extensively studied. Due to their versatility and chemical modifiability, FNPs can encapsulate different types of therapeutic compounds, including small and big molecules, proteins, enzymes, vaccines, and genetic materials. Moreover, FNPs are able to be administered both parenterally and non-parenterally. This review summaries basic information on the silk and fibroin origin and characteristics, followed by the up-to-date data on the FNPs preparation and characterization methods. In addition, their medical applications as a drug delivery system are in-depth explored based on several administrative routes of parenteral, oral, transdermal, ocular, orthopedic, and respiratory. Finally, the challenges and suggested solutions, as well as the future outlooks of these systems are discussed.
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Affiliation(s)
- Duy Toan Pham
- Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand
| | - Waree Tiyaboonchai
- Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, The Center of Excellence for Innovation in Chemistry (PERCH-CIC), Mahidol University, Salaya, Thailand
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46
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Mu X, Fitzpatrick V, Kaplan DL. From Silk Spinning to 3D Printing: Polymer Manufacturing using Directed Hierarchical Molecular Assembly. Adv Healthc Mater 2020; 9:e1901552. [PMID: 32109007 PMCID: PMC7415583 DOI: 10.1002/adhm.201901552] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 12/18/2019] [Indexed: 12/25/2022]
Abstract
Silk spinning offers an evolution-based manufacturing strategy for industrial polymer manufacturing, yet remains largely inaccessible as the manufacturing mechanisms in biological and synthetic systems, especially at the molecular level, are fundamentally different. The appealing characteristics of silk spinning include the sustainable sourcing of the protein material, the all-aqueous processing into fibers, and the unique material properties of silks in various formats. Substantial progress has been made to mimic silk spinning in artificial manufacturing processes, despite the gap between natural and artificial systems. This report emphasizes the universal spinning conditions utilized by both spiders and silkworms to generate silk fibers in nature, as a scientific and technical framework for directing molecular assembly into high-performance structures. The preparation of regenerated silk feedstocks and mimicking native spinning conditions in artificial manufacturing are discussed, as is progress and challenges in fiber spinning and 3D printing of silk-composites. Silk spinning is a biomimetic model for advanced and sustainable artificial polymer manufacturing, offering benefits in biomedical applications for tissue scaffolds and implantable devices.
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Affiliation(s)
- Xuan Mu
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Vincent Fitzpatrick
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
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Abstract
AbstractStructural proteins, including silk fibroins, play an important role in shaping the skeletons and structures of cells, tissues, and organisms. The amino acid sequences of structural proteins often show characteristic features, such as a repeating tandem motif, that are notably different from those of functional proteins such as enzymes and antibodies. In recent years, materials composed of or containing structural proteins have been studied and developed as biomedical, apparel, and structural materials. This review outlines the definition of structural proteins, methods for characterizing structural proteins as polymeric materials, and potential applications.
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48
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Abstract
As a biomaterial, silk presents unique features with a combination of excellent mechanical properties, biocompatibility, and biodegradability. The biodegradability aspects of silk biomaterials, especially with options to control the rate from short (days) to long (years) time frames in vivo, make this protein-based biopolymer a good candidate for developing biodegradable devices used for tissue repairs and tissue engineering, as well as medical device implants. Silk materials, including native silk fibers and a broad spectrum of regenerated silk materials, have been investigated in vitro and in vivo to demonstrate degradation by proteolytic enzymes. In this Review, we summarize the findings on these studies on the enzymatic degradation of Bombyx mori (B. mori) silk materials. We also present a discussion on the factors that dictate the degradation properties of silk materials. Finally, in future perspectives, we highlight some key challenges and potential directions toward the future study of the degradation of silk materials.
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Affiliation(s)
- Chengchen Guo
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155 USA
| | - Chunmei Li
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155 USA
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155 USA
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Gore PM, Naebe M, Wang X, Kandasubramanian B. Silk fibres exhibiting biodegradability & superhydrophobicity for recovery of petroleum oils from oily wastewater. JOURNAL OF HAZARDOUS MATERIALS 2020; 389:121823. [PMID: 31859169 DOI: 10.1016/j.jhazmat.2019.121823] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 11/21/2019] [Accepted: 12/03/2019] [Indexed: 05/06/2023]
Abstract
Present study reports superhydrophobic-oleophilic, environment-friendly, & biodegradable silk material derived from Bombyx mori silkworm, for practical oil-water separation and oil recovery applications. In this study, raw silk fibers were degummed using water and Na2CO3 (at 100 °C), for removal of outer gummy sericin protein layer, which was confirmed using FTIR & FE-SEM analysis. The water & Na2CO3 degummed silk fibers showed superhydrophobicity with water contact angles (WCA) of 153° & 158°, respectively, demonstrating Wenzel & Cassi-Baxter states. Degummed silk fibers showed superoleophilicity (OCA∼0°) towards petroleum oils like Petrol, Diesel, & Engine oil. The water & Na2CO3 degummed silk fibers showed oil-water separation efficiencies of 95 % & 87.5 %, respectively. Both degummed silk fibers showed more than 50 % efficiency till 10 separation cycles. Further, raw & degummed silk fibers showed an environmental biocompatibility, by their biodegradation under in-house developed biotic de-compost culture consisting of biodegrading micro-organisms. Their analysis showed that biotic de-compost culture rendered biodegradation weight loss of 11 % and 18 %, respectively, in 35 days. Successive results showed that, degummed silk fibers can be effectively utilized for practical oil-water separation, and further, they can be environmentally biodegraded, thereby mitigating their waste generation and disposal problem.
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Affiliation(s)
- Prakash M Gore
- Institute for Frontier Materials, Deakin University, Warun Ponds Campus, Geelong 3220, Victoria, Australia; Nano Surface Texturing Lab, Department of Metallurgical & Materials Engineering, Defence Institute of Advanced Technology (DU), Ministry of Defence, Girinagar, Pune 411025, India
| | - Minoo Naebe
- Institute for Frontier Materials, Deakin University, Warun Ponds Campus, Geelong 3220, Victoria, Australia
| | - Xungai Wang
- Institute for Frontier Materials, Deakin University, Warun Ponds Campus, Geelong 3220, Victoria, Australia
| | - Balasubramanian Kandasubramanian
- Nano Surface Texturing Lab, Department of Metallurgical & Materials Engineering, Defence Institute of Advanced Technology (DU), Ministry of Defence, Girinagar, Pune 411025, India.
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50
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Sogawa H, Nakano K, Tateishi A, Tajima K, Numata K. Surface Analysis of Native Spider Draglines by FE-SEM and XPS. Front Bioeng Biotechnol 2020; 8:231. [PMID: 32266250 PMCID: PMC7099578 DOI: 10.3389/fbioe.2020.00231] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Accepted: 03/05/2020] [Indexed: 11/13/2022] Open
Abstract
Although the physical and biological functions of the skin layer of spider dragline have been studied and partially clarified, the morphology and elemental contents of the skin layer of silk fibers have not been investigated in detail to date. Here, the surface of Nephila clavata spider dragline was evaluated by field emission scanning electron microscopy (FE-SEM) and X-ray photoelectron spectroscopy (XPS) to obtain clear surface morphological and molecular information. The FE-SEM images of the spider dragline indicate that the spider dragline forms a bundle of microfibrils. This hierarchical structure might induce faint fibrilar and network-like patterns on the surface of the dragline. XPS analysis revealed the presence of Na, P, and S, which are reasonably explained by considering the biological components of the major ampullate gland of spiders. The results obtained here are preliminary but will be important to consider the molecular transition of silk proteins to form excellent hierarchical structures during the spider dragline spinning process.
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Affiliation(s)
- Hiromitsu Sogawa
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, Saitama, Japan
| | - Kyohei Nakano
- Emergent Functional Polymers Research Team, RIKEN Center for Emergent Matter Science, Saitama, Japan
| | - Ayaka Tateishi
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, Saitama, Japan
| | - Keisuke Tajima
- Emergent Functional Polymers Research Team, RIKEN Center for Emergent Matter Science, Saitama, Japan
| | - Keiji Numata
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, Saitama, Japan
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