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Mclean B, Ratcliffe J, Parker BJ, Field EH, Hughes SJ, Cutter SW, Iseppi KJ, Cameron NR, Binger KJ, Reynolds NP. Composite Bioprinted Hydrogels Containing Porous Polymer Microparticles Provide Tailorable Mechanical Properties for 3D Cell Culture. Biomacromolecules 2024; 25:829-837. [PMID: 38173238 DOI: 10.1021/acs.biomac.3c01013] [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 mechanical and architectural properties of the three-dimensional (3D) tissue microenvironment can have large impacts on cellular behavior and phenotype, providing cells with specialized functions dependent on their location. This is especially apparent in macrophage biology where the function of tissue resident macrophages is highly specialized to their location. 3D bioprinting provides a convenient method of fabricating biomaterials that mimic specific tissue architectures. If these printable materials also possess tunable mechanical properties, they would be highly attractive for the study of macrophage behavior in different tissues. Currently, it is difficult to achieve mechanical tunability without sacrificing printability, scaffold porosity, and a loss in cell viability. Here, we have designed composite printable biomaterials composed of traditional hydrogels [nanofibrillar cellulose (cellulose) or methacrylated gelatin (gelMA)] mixed with porous polymeric high internal phase emulsion (polyHIPE) microparticles. By varying the ratio of polyHIPEs to hydrogel, we fabricate composite hydrogels that mimic the mechanical properties of the neural tissue (0.1-0.5 kPa), liver (1 kPa), lungs (5 kPa), and skin (10 kPa) while maintaining good levels of biocompatibility to a macrophage cell line.
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Affiliation(s)
- Bonnie Mclean
- Department of Biochemistry & Chemistry, La Trobe Institute for Molecular Sciences, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Julian Ratcliffe
- Bioimaging Platform, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Bradyn J Parker
- Department of Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Emily H Field
- Department of Biochemistry & Chemistry, La Trobe Institute for Molecular Sciences, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Sarah J Hughes
- Department of Biochemistry & Chemistry, La Trobe Institute for Molecular Sciences, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Sean W Cutter
- Department of Biochemistry & Chemistry, La Trobe Institute for Molecular Sciences, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Kyle J Iseppi
- Department of Biochemistry & Chemistry, La Trobe Institute for Molecular Sciences, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Neil R Cameron
- Department of Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia
- School of Engineering, University of Warwick, Coventry CV4 7AL, U.K
| | - Katrina J Binger
- Department of Biochemistry & Chemistry, La Trobe Institute for Molecular Sciences, La Trobe University, Bundoora, Victoria 3086, Australia
- Department of Immunology and Pathology, Alfred Medical Research and Education Precinct, Central Clinical School, Monash University, Melbourne, Victoria 3004, Australia
| | - Nicholas P Reynolds
- Department of Biochemistry & Chemistry, La Trobe Institute for Molecular Sciences, La Trobe University, Bundoora, Victoria 3086, Australia
- Department of Chemistry and Biotechnology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
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Thomas JA, Hinton ZR, Korley LTJ. Peptide-polyurea hybrids: a platform for tunable, thermally-stable, and injectable hydrogels. SOFT MATTER 2023; 19:7912-7922. [PMID: 37706333 PMCID: PMC10615840 DOI: 10.1039/d3sm00780d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
Drawing inspiration from natural systems, such as the highly segmented structures found in silk fibroin, is an important strategy when designing strong, yet dynamic biomaterials. Polymer-peptide hybrids aim to incorporate the benefits of hierarchical polypeptide structures into synthetic platforms that are promising materials for hydrogel systems due to aspects such as their biocompatibility and structural tunability. In this work, we demonstrated the utility of poly(ethylene glycol) (PEG) peptide-polyurea hybrids as self-assembled hydrogels. Specifically, poly(ε-carbobenzyloxy-L-lysine)-b-PEG-b-poly(ε-carbobenzyloxy-L-lysine) and poly(β-benzyl-L-aspartate)-b-PEG-b-poly(β-benzyl-L-aspartate) triblock copolymers were used as the soft segments in linear peptide-polyurea (PPU) hybrids. We systematically examined the effect of peptide secondary structure and peptide segment length on hydrogelation, microstructure, and rheological properties of our PPU hydrogels. Polymers containing α-helical secondary structures resulted in rapid gelation upon the addition of water, as driven by hierarchical assembly of the peptide segments. Peptide segment length dictated gel strength and resistance to deformation via complex relationships. Simulated injection experiments demonstrated that PPU hydrogels recover their original gel network within 10 s of cessation of high shear. Finally, we showed that PPU hydrogels remain solid-like within the range of 10 to 80 °C; however, a unique softening transition occurs at temperatures corresponding to slight melting of secondary structures. Overall, this bioinspired PPU hybrid platform provides opportunities to design synthetic, bioinspired polymers for hydrogels with tunable microstructure and mechanics for a wide range of thermal and injection-based applications.
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Affiliation(s)
- Jessica A Thomas
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA.
| | - Zachary R Hinton
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA.
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA
| | - LaShanda T J Korley
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA.
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA
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Evans CW, Ho D, Marlow JB, King JJ, Hee C, Wong LN, Atkin R, Smith NM, Warr GG, Norret M, Iyer KS. Intracellular Communication between Synthetic Macromolecules. J Am Chem Soc 2022; 144:14112-14120. [PMID: 35901278 DOI: 10.1021/jacs.2c02793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Non-viral delivery is an important strategy for selective and efficient gene therapy, immunization, and RNA interference, which overcomes problems of genotoxicity and inherent immunogenicity associated with viral vectors. Liposomes and polymers are compelling candidates as carriers for intracellular, non-viral delivery, but maximal efficiencies of around 1% have been reported for the most advanced non-viral carriers. Here, we develop a library of dendronized bottlebrush polymers with controlled defects, displaying a level of precision surpassed only by biological molecules like DNA, RNA, and proteins. We test concurrent and competitive delivery of DNA and show for the first time that, while intracellular communication is thought to be an exclusively biomolecular phenomenon, such communication between synthetic macromolecular complexes can also take place. Our findings challenge the assumption that delivery agents behave as bystanders that enable transfection by passive intracellular release of genetic cargo and improve upon coarse strategies in intracellular carrier design lacking control over polymer sequence, architecture, and composition, leading to a hit-or-miss outcome. Understanding the communication that takes place between macromolecules will help improve the design of non-viral delivery agents and facilitate translation of genome engineering, vaccines, and nucleic acid-based therapies.
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Affiliation(s)
- Cameron W Evans
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Diwei Ho
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Joshua B Marlow
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Jessica J King
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Charmaine Hee
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Lucas N Wong
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Rob Atkin
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Nicole M Smith
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Gregory G Warr
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Marck Norret
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - K Swaminathan Iyer
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
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Xu X, Bizmark N, Christie KSS, Datta SS, Ren ZJ, Priestley RD. Thermoresponsive Polymers for Water Treatment and Collection. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c01502] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Emam HE, Shaheen TI. Design of a dual pH and temperature responsive hydrogel based on esterified cellulose nanocrystals for potential drug release. Carbohydr Polym 2022; 278:118925. [PMID: 34973743 DOI: 10.1016/j.carbpol.2021.118925] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 11/16/2021] [Accepted: 11/18/2021] [Indexed: 12/19/2022]
Abstract
In this study, new stimuli - responsive hybrid hydrogels were achieved via succinylated cellulose nanocrystals (Su-CNC). The innovation was concerned with the inclusion of Su-CNC, at different degree of substitution (DS), into hydrogel network to render it pH and thermo-responsive characters through free radical polymerization reaction with poly(N-isopropylacrylamide) (PNIPAm). The prepared hydrogel was also examined for the in vitro release of Famotidine at different pH values. As clearly evident from the results, all the hydrogels prepared with different DS of Su-CNC, which were nominated as Su-CNC / PNIPAm (1-3), showed a high response to temperature change since their swelling behavior and hydrophilicity were decreased at 35 °C and upwards. This led to the more hydrophobicity character and thus the hydrogel shrinkage occurred. On the other hand, at pH 6, the hydrogels exhibited a significant Equilibrium Swelling Ratio (ESR) attaining 18.1, 17.3 and 16.8 (g/g) for Su-CNC / PNIPAm (1-3), respectively. However, Su-CNC / PNIPAm 2 hydrogel showed a significant response to the pH change from 8 to 2 which was advised to be selected as a potential pH responsive hydrogel for the in vitro Famotidine release.
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Affiliation(s)
- Hossam E Emam
- Department of Pretreatment and Finishing of Cellulosic based Textiles, Institute of Textile Research and Technology, National Research Centre, Scopus affiliation ID 60014618, 33 EL Buhouth St., Dokki, Giza 12622, Egypt.
| | - Tharwat I Shaheen
- Department of Pretreatment and Finishing of Cellulosic based Textiles, Institute of Textile Research and Technology, National Research Centre, Scopus affiliation ID 60014618, 33 EL Buhouth St., Dokki, Giza 12622, Egypt.
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Martorell S, Maquieira Á, Tortajada-Genaro LA. A genosensor for detecting single-point mutations in dendron chips after blocked recombinase polymerase amplification. Analyst 2022; 147:2180-2188. [DOI: 10.1039/d2an00160h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dendron–probe conjugates were effectively immobilized on chip surfaces, improving assay sensitivity and simplifying coupling reactions. Combined with an isothermal amplification, the array method accurately detects single-base changes.
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Affiliation(s)
- Sara Martorell
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain
- Unidad Mixta UPV-La Fe, Nanomedicine and Sensors, IIS La Fe, Valencia, Spain
| | - Ángel Maquieira
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain
- Unidad Mixta UPV-La Fe, Nanomedicine and Sensors, IIS La Fe, Valencia, Spain
- Chemistry department, Universitat Politècnica de València, Valencia, Spain
| | - Luis A. Tortajada-Genaro
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain
- Unidad Mixta UPV-La Fe, Nanomedicine and Sensors, IIS La Fe, Valencia, Spain
- Chemistry department, Universitat Politècnica de València, Valencia, Spain
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Chopra M, Sgro A, Norret M, Blancafort P, Iyer KS, Evans CW. A peptide-functionalised dendronised polymer for selective transfection in human liver cancer cells. NEW J CHEM 2021. [DOI: 10.1039/d1nj01566d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A dendronised polymer functionalised with SP94 targeting peptide achieves highly selective transient transfection of liver cancer cells over normal non-transformed hepatocytes.
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Affiliation(s)
- Meenu Chopra
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
| | - Agustin Sgro
- The Harry Perkins Institute of Medical Research, 6 Verdun St, Nedlands, WA 6009, Australia
- School of Human Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
| | - Marck Norret
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
| | - Pilar Blancafort
- The Harry Perkins Institute of Medical Research, 6 Verdun St, Nedlands, WA 6009, Australia
- School of Human Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
| | - K. Swaminathan Iyer
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
| | - Cameron W. Evans
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
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