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Wang J, Yuan Y, Zhang S, Lu S, Han G, Bian M, huang L, Meng D, Su D, Xiao L, Xiao Y, Zhang J, Gong N, Jiang L. Remodeling of the Intra-Conduit Inflammatory Microenvironment to Improve Peripheral Nerve Regeneration with a Neuromechanical Matching Protein-Based Conduit. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2302988. [PMID: 38430538 PMCID: PMC11077661 DOI: 10.1002/advs.202302988] [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: 05/10/2023] [Revised: 12/22/2023] [Indexed: 03/04/2024]
Abstract
Peripheral nerve injury (PNI) remains a challenging area in regenerative medicine. Nerve guide conduit (NGC) transplantation is a common treatment for PNI, but the prognosis of NGC treatment is unsatisfactory due to 1) neuromechanical unmatching and 2) the intra-conduit inflammatory microenvironment (IME) resulting from Schwann cell pyroptosis and inflammatory-polarized macrophages. A neuromechanically matched NGC composed of regenerated silk fibroin (RSF) loaded with poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) (P:P) and dimethyl fumarate (DMF) are designed, which exhibits a matched elastic modulus (25.1 ± 3.5 MPa) for the peripheral nerve and the highest 80% elongation at break, better than most protein-based conduits. Moreover, the NGC can gradually regulate the intra-conduit IME by releasing DMF and monitoring sciatic nerve movements via piezoresistive sensing. The combination of NGC and electrical stimulation modulates the IME to support PNI regeneration by synergistically inhibiting Schwann cell pyroptosis and reducing inflammatory factor release, shifting macrophage polarization from the inflammatory M1 phenotype to the tissue regenerative M2 phenotype and resulting in functional recovery of neurons. In a rat sciatic nerve crush model, NGC promoted remyelination and functional and structural regeneration. Generally, the DMF/RSF/P:P conduit provides a new potential therapeutic approach to promote nerve repair in future clinical treatments.
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Affiliation(s)
- Jia‐Yi Wang
- Department of Orthopaedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
| | - Ya Yuan
- Department of Orthopaedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
- Department of RehabilitationZhongshan HospitalFudan UniversityShanghai200032China
| | - Shu‐Yan Zhang
- The Key Laboratory for Ultrafine Materials of Ministry of Education, Engineering Research Centre for Biomedical Materials of Ministry of EducationFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai200237China
| | - Shun‐Yi Lu
- Department of Orthopaedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
| | - Guan‐Jie Han
- Department of Orthopaedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
| | - Meng‐Xuan Bian
- Department of Orthopaedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
| | - Lei huang
- Department of Orthopaedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
| | - De‐Hua Meng
- Department of Orthopaedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
| | - Di‐Han Su
- Department of Orthopaedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
| | - Lan Xiao
- School of MechanicalMedical and Process EngineeringCentre for Biomedical TechnologiesQueensland University of TechnologyBrisbane4059Australia
- Australia‐China Centre for Tissue Engineering and Regenerative MedicineQueensland University of TechnologyBrisbane4059Australia
| | - Yin Xiao
- School of MechanicalMedical and Process EngineeringCentre for Biomedical TechnologiesQueensland University of TechnologyBrisbane4059Australia
- Australia‐China Centre for Tissue Engineering and Regenerative MedicineQueensland University of TechnologyBrisbane4059Australia
- School of Medicine and Dentistry & Menzies Health Institute QueenslandGriffith UniversityGold Coast4222Australia
| | - Jian Zhang
- Department of Orthopaedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
| | - Ning‐Ji Gong
- Department of EmergencyDepartment of OrthopedicsThe Second HospitalCheeloo College of MedicineShandong UniversityJinanShandong250033China
| | - Li‐Bo Jiang
- Department of Orthopaedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
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Pan J, Wang Z, Deng M, Zhang J, He H, Wang B, Liu X, Fu F. Construction of Janus structures on thin silk fabrics via misting for wet-thermal comfort and antimicrobial activity. J Colloid Interface Sci 2024; 656:587-596. [PMID: 37996256 DOI: 10.1016/j.jcis.2023.11.042] [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: 08/23/2023] [Revised: 11/02/2023] [Accepted: 11/07/2023] [Indexed: 11/25/2023]
Abstract
Owing to their small fiber diameter (10-15 μm), silk fabrics are always thin (32-90 g m-2). Therefore, construction of the Janus surfaces of silk fabrics that possess excellent multifunctionality remains a formidable challenge. Herein, first, silk fabrics were grafted using glycidyltrimethylammonium chloride to form a superhydrophilic surface (G-side). Then, a unilateral hydrophobic surface (O-side) was readily fabricated by mist coating octadecyltrichlorosilane-functionalized SiO2 nanoparticles (NPs) to produce hierarchical surface textures. To prevent NP penetration from the G-side to the O-side, a "fireproof isolation" method was employed. Consequently, Janus silk fabrics (JanSFs) bearing asymmetric wettability were prepared, and their wetting gradient could be conveniently regulated. With the mist time ranging from 4 to 7 min, the unidirectional transport index and efficiency of the unidirectional water transport increased and decreased by 13.2 and 10.4 times, respectively. Sweat could be effectively drained away from human skin to ensure that the skin was dry and comfortable. Compared with the surface temperature of the raw fabric, the raw fabric of JanSFs increased by 2.7 °C. Furthermore, the breathability of JanSF was negligibly affected, and the outer O-side of the JanSF showed substantial antibacterial activity. This study is important for designing JanSFs that exhibit unidirectional water transport.
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Affiliation(s)
- Jiana Pan
- School of Materials Science and Engineering and Institute of Composite Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zhengfeng Wang
- School of Materials Science and Engineering and Institute of Composite Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Mingxiu Deng
- School of Materials Science and Engineering and Institute of Composite Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jie Zhang
- School of Materials Science and Engineering and Institute of Composite Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Hongfan He
- School of Materials Science and Engineering and Institute of Composite Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Bing Wang
- School of Materials Science and Engineering and Institute of Composite Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China; Zhejiang Sci-Tech University Shengzhou Innovation Research Institute, China
| | - Xiangdong Liu
- School of Materials Science and Engineering and Institute of Composite Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China; Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province, Shaoxing University, Shaoxing 312000, China
| | - Feiya Fu
- School of Materials Science and Engineering and Institute of Composite Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China; Project Promotion Department, Zhejiang Provincial Innovation Center of Advanced Textile Technology, Shaoxing, China; Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province, Shaoxing University, Shaoxing 312000, China; Zhejiang Sci-Tech University Shengzhou Innovation Research Institute, China.
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Chelazzi D, Baglioni P. From Nanoparticles to Gels: A Breakthrough in Art Conservation Science. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:10744-10755. [PMID: 37487238 PMCID: PMC10413966 DOI: 10.1021/acs.langmuir.3c01324] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/04/2023] [Indexed: 07/26/2023]
Abstract
Cultural heritage is a crucial resource to increase our society's resilience. However, degradation processes, enhanced by environmental and anthropic risks, inevitably affect works of art, hindering their accessibility and socioeconomic value. In response, interfacial and colloidal chemistry has proposed valuable solutions over the past decades, overcoming the limitations of traditional restoration materials and granting cost- and time-effective remedial conservation of the endangered artifacts. Ranging from inorganic nanoparticles to hybrid composites and soft condensed matter (gels, microemulsions), a wide palette of colloidal systems has been made available to conservators worldwide, targeting the consolidation, cleaning, and protection of works of art. The effectiveness and versatility of the proposed solutions allow the safe and effective treatment of masterpieces belonging to different cultural and artistic productions, spanning from classic ages to the Renaissance and modern/contemporary art. Despite these advancements, the formulation of materials for the preservation of cultural heritage is still an open, exciting field, where recent requirements include coping with the imperatives of the Green Deal to foster the production of sustainable, low-toxicity, and environmentally friendly systems. This review gives a critical overview starting from pioneering works up to the latest advancements in colloidal systems for art conservation, a challenging topic where effective solutions can be transversal to multiple sectors even beyond cultural heritage preservation, from the pharmaceutical and food industry, to cosmetics, tissue engineering, and detergency.
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Affiliation(s)
- David Chelazzi
- Department
of Chemistry “Ugo Schiff” and CSGI, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Piero Baglioni
- CSGI, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
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Tunning the Microstructure and Mechanical Properties of Lyophilized Silk Scaffolds by Pre-freezing Treatment of Silk Hydrogel and Silk Solution. J Colloid Interface Sci 2022; 631:46-55. [DOI: 10.1016/j.jcis.2022.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/29/2022] [Accepted: 11/01/2022] [Indexed: 11/08/2022]
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Mechanical response and yielding transition of silk-fibroin and silk-fibroin/cellulose nanocrystals composite gels. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128121] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Cianci C, Chelazzi D, Poggi G, Modi F, Giorgi R, Laurati M. Hybrid fibroin-nanocellulose composites for the consolidation of aged and historical silk. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127944] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Casini A, Chelazzi D, Giorgi R. Jin Shofu Starch Nanoparticles for the Consolidation of Modern Paintings. ACS APPLIED MATERIALS & INTERFACES 2021; 13:37924-37936. [PMID: 34319093 DOI: 10.1021/acsami.1c11064] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Matte, porous, and weakly bound paint layers, typically found in modern/contemporary art, represent an unsolved conservation challenge. Current conservation practice relies on synthetic or natural adhesives that can alter dramatically the optical properties of paints. Alternatively, we propose a novel nanostructured consolidant based on starch, a renewable natural polymer. We synthesized starch nanoparticles (SNPs) to boost their penetration into the porous painted layers; upon solvent evaporation, the particles were expected to adhere to the pigments thanks to their large surface area and abundant -OH groups. The SNPs were formulated through a bottom-up approach, where gluten-removed Jin Shofu wheat starch was gelatinized and then precipitated in a nonsolvent. The low gelatinization temperature of wheat starch is likely key to favor disassembly in alkali and reassembly in the nonsolvent. The synthesis conditions can be tuned to obtain amorphous SNPs of ca. 50 nm with acceptable polydispersity. The particles swell in water to form nanosized gel-like fractal domains (as observed with cryogenic electron microscopy), formed by the organization of smaller units in polymer-rich and -deficient regions. Aqueous and hydroalcoholic particles' dispersions were assessed on aged ultramarine blue mock-ups that mimic degraded modern/contemporary paints. The consolidation effectiveness was evaluated with a specifically designed in-house protocol: the SNPs distribute across the paint section and strongly increase pigments' cohesion while preserving the original optical properties of the painted layer, as opposed to dispersions of bulk starch that simply accumulate on the paint surface, forming superficial glossy films. The Jin Shofu SNPS proved to be a new promising tool for the consolidation of weakened paintings, opening perspectives in the formulation and application of consolidants for modern and contemporary art.
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Affiliation(s)
- Andrea Casini
- Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, via della Lastruccia 3-Sesto Fiorentino, I-50019 Florence, Italy
| | - David Chelazzi
- Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, via della Lastruccia 3-Sesto Fiorentino, I-50019 Florence, Italy
| | - Rodorico Giorgi
- Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, via della Lastruccia 3-Sesto Fiorentino, I-50019 Florence, Italy
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Wyss CS, Karami P, Demongeot A, Bourban PE, Pioletti DP. Silk granular hydrogels self-reinforced with regenerated silk fibroin fibers. SOFT MATTER 2021; 17:7038-7046. [PMID: 34251015 DOI: 10.1039/d1sm00585e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Granular hydrogels with high stability, strength, and toughness are laborious to develop. Post-curing is often employed to bind microgels chemically and enhance mechanical properties. Here a unique strategy was investigated to maintain microgels together with a novel self-reinforced silk granular hydrogel composed of 10 wt% 20 kDa poly(ethylene glycol) dimethacrylate microgels and regenerated silk fibroin fibers. The principle is to use the swelling of microgels to concentrate the surrounding solution and regenerate silk fibroin in situ. Self-reinforcement is subsequently one of the added functions. We showed that silk fibroin in most compositions was homogeneously distributed and had successfully regenerated in situ around microgels, holding them together in a network-like structure. FTIR analysis revealed the presence of amorphous and crystalline silk fibroin, where 50% of the secondary structures could be assigned to strong β-sheets. Swelling ratios, i.e. 10-45 vol%, increased proportionally with the microgel content, suggesting that mainly microgels governed swelling. In contrast, the elastic modulus, i.e. 58-296 kPa, increased almost linearly with silk fibroin content. Moreover, we showed that the precursor could be injected and cast into a given shape. Viscous precursors of various compositions were also placed side by side to create mechanical gradients. Finally, it was demonstrated that silk granular hydrogel could successfully be synthesized with other microgels like gelatin methacryloyl. Silk granular hydrogels represent, therefore, a novel class of self-reinforced hydrogel structures with tunable swelling and elastic properties.
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Affiliation(s)
- Céline Samira Wyss
- Laboratory for Processing of Advanced Composites (LPAC), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland.
| | - Peyman Karami
- Laboratory of Biomechanical Orthopedics (LBO), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Adrien Demongeot
- Laboratory for Processing of Advanced Composites (LPAC), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland.
| | - Pierre-Etienne Bourban
- Laboratory for Processing of Advanced Composites (LPAC), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland.
| | - Dominique P Pioletti
- Laboratory of Biomechanical Orthopedics (LBO), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
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Baglioni P, Chelazzi D. How Science Can Contribute to the Remedial Conservation of Cultural Heritage. Chemistry 2021; 27:10798-10806. [PMID: 34014576 DOI: 10.1002/chem.202100675] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Indexed: 12/18/2022]
Abstract
Colloid science is contributing solutions to counteract the degradation of artifacts, favoring their transfer to future generations. Advanced materials such as nanoparticles, coatings, gels and microemulsions have been assessed in conservation, spanning from archeological sites to modern and contemporary art. We give an overview of the fundamental milestones and latest innovations in conservation science, targeting solutions and tools for remedial conservation based on green nanomaterials and hybrid systems. Future perspectives and outstanding challenges in this exciting field are then outlined.
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Affiliation(s)
- Piero Baglioni
- Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Italy.,Department of Nuclear Science and Engineering, Massachussetts Institute of Technology, Cambridge, MA 02139, USA
| | - David Chelazzi
- CSGI and Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Italy
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Baglioni M, Poggi G, Chelazzi D, Baglioni P. Advanced Materials in Cultural Heritage Conservation. Molecules 2021; 26:molecules26133967. [PMID: 34209620 PMCID: PMC8271397 DOI: 10.3390/molecules26133967] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/25/2021] [Indexed: 11/16/2022] Open
Abstract
Cultural Heritage is a crucial socioeconomic resource; yet, recurring degradation processes endanger its preservation. Serendipitous approaches in restoration practice need to be replaced by systematically addressing conservation issues through the development of advanced materials for the preservation of the artifacts. In the last few decades, materials and colloid science have provided valid solutions to counteract degradation, and we report here the main highlights in the formulation and application of materials and methodologies for the cleaning, protection and consolidation of works of art. Several types of artifacts are addressed, from murals to canvas paintings, metal objects, and paper artworks, comprising both classic and modern/contemporary art. Systems, such as nanoparticles, gels, nanostructured cleaning fluids, composites, and other functional materials, are reviewed. Future perspectives are also commented, outlining open issues and trends in this challenging and exciting field.
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