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Ashton MD, Cooper PA, Municoy S, Desimone MF, Cheneler D, Shnyder SD, Hardy JG. Controlled Bioactive Delivery Using Degradable Electroactive Polymers. Biomacromolecules 2022; 23:3031-3040. [PMID: 35748772 PMCID: PMC9277582 DOI: 10.1021/acs.biomac.2c00516] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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] [Indexed: 01/14/2023]
Abstract
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Biomaterials capable
of precisely controlling the delivery of agrochemicals/biologics/drugs/fragrances
have significant markets in the agriscience/healthcare industries.
Here, we report the development of degradable electroactive polymers
and their application for the controlled delivery of a clinically
relevant drug (the anti-inflammatory dexamethasone phosphate, DMP).
Electroactive copolymers composed of blocks of polycaprolactone (PCL)
and naturally occurring electroactive pyrrole oligomers (e.g., bilirubin,
biliverdin, and hemin) were prepared and solution-processed to produce
films (optionally doped with DMP). A combination of in silico/in vitro/in
vivo studies demonstrated the cytocompatibility of the polymers. The
release of DMP in response to the application of an electrical stimulus
was observed to be enhanced by ca. 10–30% relative to the passive
release from nonstimulated samples in vitro. Such stimuli-responsive
biomaterials have the potential for integration devices capable of
delivering a variety of molecules for technical/medical applications.
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Affiliation(s)
- Mark D Ashton
- Department of Chemistry, Faculty of Science and Technology, Lancaster University, Bailrigg, Lancaster LA1 4YB, U.K
| | - Patricia A Cooper
- Institute of Cancer Therapeutics, School of Pharmacy and Medical Sciences, Faculty of Life Sciences, University of Bradford, Bradford BD7 1DP, U.K
| | - Sofia Municoy
- Instituto de Química y Metabolismo del Fármaco (IQUIMEFA), Facultad de Farmacia y Bioquímica, Consejo Nacional de Investigaciones, Científicas y Técnicas (CONICET), Universidad de Buenos Aires, Junín 956, Piso 3° (1113), Buenos Aires 1113, Argentina
| | - Martin F Desimone
- Instituto de Química y Metabolismo del Fármaco (IQUIMEFA), Facultad de Farmacia y Bioquímica, Consejo Nacional de Investigaciones, Científicas y Técnicas (CONICET), Universidad de Buenos Aires, Junín 956, Piso 3° (1113), Buenos Aires 1113, Argentina
| | - David Cheneler
- Department of Engineering, Faculty of Science and Technology, Lancaster University, Bailrigg, Lancaster LA1 4YW, U.K.,Materials Science Institute, Lancaster University, Bailrigg, Lancaster LA1 4YB, U.K
| | - Steven D Shnyder
- Institute of Cancer Therapeutics, School of Pharmacy and Medical Sciences, Faculty of Life Sciences, University of Bradford, Bradford BD7 1DP, U.K
| | - John G Hardy
- Department of Chemistry, Faculty of Science and Technology, Lancaster University, Bailrigg, Lancaster LA1 4YB, U.K.,Materials Science Institute, Lancaster University, Bailrigg, Lancaster LA1 4YB, U.K
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Distler T, Polley C, Shi F, Schneidereit D, Ashton MD, Friedrich O, Kolb JF, Hardy JG, Detsch R, Seitz H, Boccaccini AR. Electrically Conductive and 3D-Printable Oxidized Alginate-Gelatin Polypyrrole:PSS Hydrogels for Tissue Engineering. Adv Healthc Mater 2021; 10:e2001876. [PMID: 33711199 DOI: 10.1002/adhm.202001876] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [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: 10/25/2020] [Revised: 01/26/2021] [Indexed: 02/06/2023]
Abstract
Electroactive hydrogels can be used to influence cell response and maturation by electrical stimulation. However, hydrogel formulations which are 3D printable, electroactive, cytocompatible, and allow cell adhesion, remain a challenge in the design of such stimuli-responsive biomaterials for tissue engineering. Here, a combination of pyrrole with a high gelatin-content oxidized alginate-gelatin (ADA-GEL) hydrogel is reported, offering 3D-printability of hydrogel precursors to prepare cytocompatible and electrically conductive hydrogel scaffolds. By oxidation of pyrrole, electroactive polypyrrole:polystyrenesulfonate (PPy:PSS) is synthesized inside the ADA-GEL matrix. The hydrogels are assessed regarding their electrical/mechanical properties, 3D-printability, and cytocompatibility. It is possible to prepare open-porous scaffolds via bioplotting which are electrically conductive and have a higher cell seeding efficiency in scaffold depth in comparison to flat 2D hydrogels, which is confirmed via multiphoton fluorescence microscopy. The formation of an interpenetrating polypyrrole matrix in the hydrogel matrix increases the conductivity and stiffness of the hydrogels, maintaining the capacity of the gels to promote cell adhesion and proliferation. The results demonstrate that a 3D-printable ADA-GEL can be rendered conductive (ADA-GEL-PPy:PSS), and that such hydrogel formulations have promise for cell therapies, in vitro cell culture, and electrical-stimulation assisted tissue engineering.
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Affiliation(s)
- Thomas Distler
- Institute of Biomaterials Department of Material Science and Engineering Friedrich‐Alexander‐University Erlangen‐Nuremberg Erlangen 91058 Germany
| | - Christian Polley
- Chair of Microfluidics Department of Mechanical Engineering University of Rostock Rostock 18059 Germany
| | - Fukun Shi
- Leibniz Institute for Plasma Science and Technology (INP) Greifswald 17489 Germany
| | - Dominik Schneidereit
- Institute of Medical Biotechnology Department of Chemical and Biological Engineering Erlangen 91052 Germany
| | - Mark. D. Ashton
- Department of Chemistry Faraday Building Lancaster University Lancaster Lancashire LA1 4YB UK
- Materials Science Institute Faraday Building Lancaster University Lancaster Lancashire LA1 4YB UK
| | - Oliver Friedrich
- Institute of Medical Biotechnology Department of Chemical and Biological Engineering Erlangen 91052 Germany
| | - Jürgen F. Kolb
- Leibniz Institute for Plasma Science and Technology (INP) Greifswald 17489 Germany
| | - John G. Hardy
- Department of Chemistry Faraday Building Lancaster University Lancaster Lancashire LA1 4YB UK
- Materials Science Institute Faraday Building Lancaster University Lancaster Lancashire LA1 4YB UK
| | - Rainer Detsch
- Institute of Biomaterials Department of Material Science and Engineering Friedrich‐Alexander‐University Erlangen‐Nuremberg Erlangen 91058 Germany
| | - Hermann Seitz
- Chair of Microfluidics Department of Mechanical Engineering University of Rostock Rostock 18059 Germany
| | - Aldo R. Boccaccini
- Institute of Biomaterials Department of Material Science and Engineering Friedrich‐Alexander‐University Erlangen‐Nuremberg Erlangen 91058 Germany
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Ashton MD, Appen IC, Firlak M, Stanhope NE, Schmidt CE, Eisenstadt WR, Hur B, Hardy JG. Wirelessly triggered bioactive molecule delivery from degradable electroactive polymer films. POLYM INT 2020. [DOI: 10.1002/pi.6089] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Mark D Ashton
- Department of Chemistry Lancaster University Lancaster UK
| | - Isabel C Appen
- Department of Chemistry Lancaster University Lancaster UK
| | - Melike Firlak
- Department of Chemistry Lancaster University Lancaster UK
- Department of Chemistry Gebze Technical University Kocaeli Turkey
| | | | - Christine E Schmidt
- J. Crayton Pruitt Family Department of Biomedical Engineering University of Florida, Biomedical Sciences Building JG‐53 Gainesville FL USA
| | - William R Eisenstadt
- Department of Electrical and Computer Engineering University of Florida, New Engineering Building Gainesville FL USA
| | - Byul Hur
- Department of Engineering Technology and Industrial Distribution Texas A&M University College Station TX USA
| | - John G Hardy
- Department of Chemistry Lancaster University Lancaster UK
- J. Crayton Pruitt Family Department of Biomedical Engineering University of Florida, Biomedical Sciences Building JG‐53 Gainesville FL USA
- Materials Science Institute, Lancaster University Lancaster UK
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