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Cortes Ruiz MF, Brusentsev Y, Lindström SB, Xu C, Wågberg L. Shape-recovering nanocellulose networks: Preparation, characterization and modeling. Carbohydr Polym 2023; 315:120950. [PMID: 37230608 DOI: 10.1016/j.carbpol.2023.120950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/20/2023] [Accepted: 04/22/2023] [Indexed: 05/27/2023]
Abstract
Development of strong cellulose nanofibril (CNF) networks for advanced applications, such as in the biomedical field, is of high importance owing to the biocompatible nature and plant-based origin of cellulose nanofibrils. Nevertheless, lack of mechanical strength and complex synthesis methods hinder the application of these materials in areas where both toughness and manufacturing simplicity are required. In this work, we introduce a facile method for the synthesis of a low solid content (< 2 wt%), covalently crosslinked CNF hydrogel where Poly (N-isopropylacrylamide) (NIPAM) chains are utilized as crosslinks between the nanofibrils. The resulting networks have the capability to fully recover the shape in which they were formed after various drying and rewetting cycles. Characterization of the hydrogel and its constitutive components was performed using X-ray scattering, rheological investigations and uniaxial testing in compression. Influence of covalent crosslinks was compared with networks crosslinked by the addition of CaCl2. Among other things the results show that the mechanical properties of the hydrogels can be tuned by controlling the ionic strength of the surrounding medium. Finally, a mathematical model was developed based on the experimental results, which describes and predicts to a decent degree the large-deformation, elastoplastic behavior, and fracture of these networks.
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Affiliation(s)
- Maria F Cortes Ruiz
- Fiber Technology Division, Fiber and Polymer Technology Department, KTH Royal Institute of Technology, 114 28 Stockholm, Sweden; Wallenberg Wood Science Center, Fiber and Polymer Technology Department, KTH Royal Institute of Technology, 114 28 Stockholm, Sweden
| | - Yury Brusentsev
- Laboratory of Natural Materials Technology, Åbo Akademi University, 20500 Åbo, Finland
| | | | - Chunlin Xu
- Laboratory of Natural Materials Technology, Åbo Akademi University, 20500 Åbo, Finland
| | - Lars Wågberg
- Fiber Technology Division, Fiber and Polymer Technology Department, KTH Royal Institute of Technology, 114 28 Stockholm, Sweden; Wallenberg Wood Science Center, Fiber and Polymer Technology Department, KTH Royal Institute of Technology, 114 28 Stockholm, Sweden.
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Brusentsev Y, Yang P, King AWT, Cheng F, Cortes Ruiz MF, Eriksson JE, Kilpeläinen I, Willför S, Xu C, Wågberg L, Wang X. Photocross-Linkable and Shape-Memory Biomaterial Hydrogel Based on Methacrylated Cellulose Nanofibres. Biomacromolecules 2023; 24:3835-3845. [PMID: 37527286 PMCID: PMC10428165 DOI: 10.1021/acs.biomac.3c00476] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 07/17/2023] [Indexed: 08/03/2023]
Abstract
In the context of three-dimensional (3D) cell culture and tissue engineering, 3D printing is a powerful tool for customizing in vitro 3D cell culture models that are critical for understanding the cell-matrix and cell-cell interactions. Cellulose nanofibril (CNF) hydrogels are emerging in constructing scaffolds able to imitate tissue in a microenvironment. A direct modification of the methacryloyl (MA) group onto CNF is an appealing approach to synthesize photocross-linkable building blocks in formulating CNF-based bioinks for light-assisted 3D printing; however, it faces the challenge of the low efficiency of heterogenous surface modification. Here, a multistep approach yields CNF methacrylate (CNF-MA) with a decent degree of substitution while maintaining a highly dispersible CNF hydrogel, and CNF-MA is further formulated and copolymerized with monomeric acrylamide (AA) to form a super transparent hydrogel with tuneable mechanical strength (compression modulus, approximately 5-15 kPa). The resulting photocurable hydrogel shows good printability in direct ink writing and good cytocompatibility with HeLa and human dermal fibroblast cell lines. Moreover, the hydrogel reswells in water and expands to all directions to restore its original dimension after being air-dried, with further enhanced mechanical properties, for example, Young's modulus of a 1.1% CNF-MA/1% PAA hydrogel after reswelling in water increases to 10.3 kPa from 5.5 kPa.
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Affiliation(s)
- Yury Brusentsev
- Laboratory
of Natural Materials Technology, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Henrikinkatu 2, 20500 Turku, Finland
| | - Peiru Yang
- Turku
Bioscience Centre, University of Turku and
Åbo Akademi University, Tykistökatu 6, 20520 Turku, Finland
- Cell
Biology, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6, 20520 Turku, Finland
| | - Alistair W. T. King
- Chemistry
Department, University of Helsinki, Yliopistonkatu 3, 00014 Helsinki, Finland
| | - Fang Cheng
- School
of Pharmaceutical Sciences (Shenzhen), Shenzhen
Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Maria F. Cortes Ruiz
- Department
of Fibre and Polymer Technology, Division of Fibre Technology, KTH Royal Institute of Technology, Teknikringen 56-58, 100 44 Stockholm, Sweden
- Department
of Fibre and Polymer Technology, Wallenberg Wood Science Centre, KTH Royal Institute of Technology, Teknikringen 56-58, 100 44 Stockholm, Sweden
| | - John E. Eriksson
- Turku
Bioscience Centre, University of Turku and
Åbo Akademi University, Tykistökatu 6, 20520 Turku, Finland
- Cell
Biology, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6, 20520 Turku, Finland
| | - Ilkka Kilpeläinen
- Chemistry
Department, University of Helsinki, Yliopistonkatu 3, 00014 Helsinki, Finland
| | - Stefan Willför
- Laboratory
of Natural Materials Technology, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Henrikinkatu 2, 20500 Turku, Finland
| | - Chunlin Xu
- Laboratory
of Natural Materials Technology, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Henrikinkatu 2, 20500 Turku, Finland
| | - Lars Wågberg
- Department
of Fibre and Polymer Technology, Division of Fibre Technology, KTH Royal Institute of Technology, Teknikringen 56-58, 100 44 Stockholm, Sweden
- Department
of Fibre and Polymer Technology, Wallenberg Wood Science Centre, KTH Royal Institute of Technology, Teknikringen 56-58, 100 44 Stockholm, Sweden
| | - Xiaoju Wang
- Laboratory
of Natural Materials Technology, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Henrikinkatu 2, 20500 Turku, Finland
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Senthilkumar R, Brusentsev Y, Paul P, Marimuthu P, Cheng F, Eklund PC, Eriksson JE. Synthesis and Evaluation of Anisomelic acid-like Compounds for the Treatment of HPV-Mediated Carcinomas. Sci Rep 2019; 9:20295. [PMID: 31889069 PMCID: PMC6937315 DOI: 10.1038/s41598-019-56410-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 12/11/2019] [Indexed: 12/30/2022] Open
Abstract
The vast majority of cervical and 75% of oropharyngeal carcinomas are triggered by infection with a type of high-risk oncogenic human papillomavirus (HPV). It is well-known that E6 and E7 oncoproteins are critical for viral-induced cancer, and hence, they represent valuable targets for therapeutic intervention in HPV-mediated cancers. Our earlier research on the cembranoid, anisomelic acid (AA) showed that, AA has the potential to induce apoptosis in HPV cells by the depletion of E6 and E7 oncoproteins. The present study describes the structure-activity relationship and the evaluation of synthetic AA like compounds, i.e simplified cembranoid-like structures, as HPV inhibitors against some papilloma cell lines. Both from experimental and computational results, we observed that these compounds induced apoptosis by the same E6/E7-based mechanism as AA, but at earlier time points, thus being far more effective than AA. Further, the data indicated that only part of the structure of AA is required for the molecular action. Based on these results, we identified some novel and potential compounds for specific treatment of HPV-associated carcinomas.
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Affiliation(s)
- Rajendran Senthilkumar
- Johan Gadolin Process Chemistry Centre, Åbo Akademi University, c/o Laboratory of Organic Chemistry, Biskopsgatan 8, 20500, Turku, Finland.,Cell Biology, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6A, 20520, Turku, Finland.,Turku Centre for Biotechnology, Åbo Akademi University and University of Turku, Tykistökatu 6A, 20520, Turku, Finland
| | - Yury Brusentsev
- Johan Gadolin Process Chemistry Centre, Åbo Akademi University, c/o Laboratory of Organic Chemistry, Biskopsgatan 8, 20500, Turku, Finland
| | - Preethy Paul
- Cell Biology, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6A, 20520, Turku, Finland.,Turku Centre for Biotechnology, Åbo Akademi University and University of Turku, Tykistökatu 6A, 20520, Turku, Finland
| | - Parthiban Marimuthu
- Structural Bioinformatics Laboratory, Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6A, 20520, Turku, Finland
| | - Fang Cheng
- Cell Biology, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6A, 20520, Turku, Finland.,School of pharmaceutical sciences (Shenzhen), Sun Yat-sen University, 518107, Shenzhen, China
| | - Patrik C Eklund
- Johan Gadolin Process Chemistry Centre, Åbo Akademi University, c/o Laboratory of Organic Chemistry, Biskopsgatan 8, 20500, Turku, Finland.
| | - John Elias Eriksson
- Cell Biology, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6A, 20520, Turku, Finland.,Turku Centre for Biotechnology, Åbo Akademi University and University of Turku, Tykistökatu 6A, 20520, Turku, Finland
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Tirri T, Aubert M, Aziz H, Brusentsev Y, Pawelec W, Wilén CE. Sulfenamides in synergistic combination with halogen free flame retardants in polypropylene. Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.03.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Abstract
Numerous oxidative transformations of lignan structures have been reported in the literature. In this paper we present an overview on the current findings in the field. The focus is put on transformations targeting a specific structure, a specific reaction, or an interconversion of the lignan skeleton. Oxidative transformations related to biosynthesis, antioxidant measurements, and total syntheses are mostly excluded. Non-metal mediated as well as metal mediated oxidations are reported, and mechanisms based on hydrogen abstractions, epoxidations, hydroxylations, and radical reactions are discussed for the transformation and interconversion of lignan structures. Enzymatic oxidations, photooxidation, and electrochemical oxidations are also briefly reported.
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Affiliation(s)
- Patrik A Runeberg
- Johan Gadolin Process Chemistry Center, Åbo Akademi University, Piispankatu 8, 20500 Turku, Finland.
| | - Yury Brusentsev
- Johan Gadolin Process Chemistry Center, Åbo Akademi University, Piispankatu 8, 20500 Turku, Finland.
| | - Sabine M K Rendon
- Johan Gadolin Process Chemistry Center, Åbo Akademi University, Piispankatu 8, 20500 Turku, Finland.
| | - Patrik C Eklund
- Johan Gadolin Process Chemistry Center, Åbo Akademi University, Piispankatu 8, 20500 Turku, Finland.
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Eklund P, Brusentsev Y. Synthesis of Chiral Phosphorous and Phosphoric Acid Derivatives from the Lignans Matairesinol and Conidendrin. Synlett 2016. [DOI: 10.1055/s-0035-1562605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Affiliation(s)
- Patrik Eklund
- Laboratory of Organic Chemistry, Åbo Akademi University
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Brusentsev Y, Sandberg T, Hotokka M, Sjöholm R, Eklund P. Synthesis and structural analysis of sterically hindered chiral 1,4-diol ligands derived from the lignan hydroxymatairesinol. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.12.066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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