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Brito J, Moon J, Hlushko R, Aliakseyeu A, Andrianov AK, Sukhishvili SA. Engineering Degradation Rate of Polyphosphazene-Based Layer-by-Layer Polymer Coatings. J Funct Biomater 2024; 15:26. [PMID: 38391879 PMCID: PMC10889497 DOI: 10.3390/jfb15020026] [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: 12/10/2023] [Revised: 01/13/2024] [Accepted: 01/21/2024] [Indexed: 02/24/2024] Open
Abstract
Degradable layer-by-layer (LbL) polymeric coatings have distinct advantages over traditional biomedical coatings due to their precision of assembly, versatile inclusion of bioactive molecules, and conformality to the complex architectures of implantable devices. However, controlling the degradation rate while achieving biocompatibility has remained a challenge. This work employs polyphosphazenes as promising candidates for film assembly due to their inherent biocompatibility, tunability of chemical composition, and the buffering capability of degradation products. The degradation of pyrrolidone-functionalized polyphosphazenes was monitored in solution, complexes and LbL coatings (with tannic acid), providing the first to our knowledge comparison of solution-state degradation to solid-state LbL degradation. In all cases, the rate of degradation accelerated in acidic conditions. Importantly, the tunability of the degradation rate of polyphosphazene-based LbL films was achieved by varying film assembly conditions. Specifically, by slightly increasing the ionization of tannic acid (near neutral pH), we introduce electrostatic "defects" to the hydrogen-bonded pairs that accelerate film degradation. Finally, we show that replacing the pyrrolidone side group with a carboxylic acid moiety greatly reduces the degradation rate of the LbL coatings. In practical applications, these coatings have the versatility to serve as biocompatible platforms for various biomedical applications and controlled release systems.
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Affiliation(s)
- Jordan Brito
- Department of Materials Science & Engineering, Texas A&M University, College Station, TX 77840, USA
| | - Junho Moon
- Department of Materials Science & Engineering, Texas A&M University, College Station, TX 77840, USA
| | - Raman Hlushko
- Institute for Bioscience and Biotechnology Research, University of Maryland, Rockville, MD 20850, USA
| | - Aliaksei Aliakseyeu
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Alexander K Andrianov
- Institute for Bioscience and Biotechnology Research, University of Maryland, Rockville, MD 20850, USA
| | - Svetlana A Sukhishvili
- Department of Materials Science & Engineering, Texas A&M University, College Station, TX 77840, USA
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Kumar N, Ghosh B, Kumar A, Koley R, Dhara S, Chattopadhyay S. Multilayered “SMART” hydrogel systems for on-site drug delivery applications. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.104111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Cordeiro RA, Serra A, Coelho JF, Faneca H. Poly(β-amino ester)-based gene delivery systems: From discovery to therapeutic applications. J Control Release 2019; 310:155-187. [DOI: 10.1016/j.jconrel.2019.08.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 08/22/2019] [Accepted: 08/23/2019] [Indexed: 12/29/2022]
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Alford A, Tucker B, Kozlovskaya V, Chen J, Gupta N, Caviedes R, Gearhart J, Graves D, Kharlampieva E. Encapsulation and Ultrasound-Triggered Release of G-Quadruplex DNA in Multilayer Hydrogel Microcapsules. Polymers (Basel) 2018; 10:E1342. [PMID: 30961267 PMCID: PMC6401949 DOI: 10.3390/polym10121342] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 11/30/2018] [Accepted: 12/03/2018] [Indexed: 01/01/2023] Open
Abstract
Nucleic acid therapeutics have the potential to be the most effective disease treatment strategy due to their intrinsic precision and selectivity for coding highly specific biological processes. However, freely administered nucleic acids of any type are quickly destroyed or rendered inert by a host of defense mechanisms in the body. In this work, we address the challenge of using nucleic acids as drugs by preparing stimuli responsive poly(methacrylic acid)/poly(N-vinylpyrrolidone) (PMAA/PVPON)n multilayer hydrogel capsules loaded with ~7 kDa G-quadruplex DNA. The capsules are shown to release their DNA cargo on demand in response to both enzymatic and ultrasound (US)-triggered degradation. The unique structure adopted by the G-quadruplex is essential to its biological function and we show that the controlled release from the microcapsules preserves the basket conformation of the oligonucleotide used in our studies. We also show that the (PMAA/PVPON) multilayer hydrogel capsules can encapsulate and release ~450 kDa double stranded DNA. The encapsulation and release approaches for both oligonucleotides in multilayer hydrogel microcapsules developed here can be applied to create methodologies for new therapeutic strategies involving the controlled delivery of sensitive biomolecules. Our study provides a promising methodology for the design of effective carriers for DNA vaccines and medicines for a wide range of immunotherapies, cancer therapy and/or tissue regeneration therapies in the future.
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Affiliation(s)
- Aaron Alford
- Department of Chemistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Brenna Tucker
- Department of Chemistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Veronika Kozlovskaya
- Department of Chemistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Jun Chen
- Department of Chemistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Nirzari Gupta
- Department of Chemistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Racquel Caviedes
- Department of Chemistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Jenna Gearhart
- Department of Chemistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - David Graves
- Department of Chemistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Eugenia Kharlampieva
- Department of Chemistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
- Center of Nanoscale Materials and Biointegration, Birmingham, AL 35294, USA.
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Winther AK, Fejerskov B, ter Meer M, Jensen NB, Dillion R, Schaffer JE, Chandrawati R, Stevens MM, Schultze Kool LJ, Simonsen U, Zelikin AN. Enzyme Prodrug Therapy Achieves Site-Specific, Personalized Physiological Responses to the Locally Produced Nitric Oxide. ACS APPLIED MATERIALS & INTERFACES 2018; 10:10741-10751. [PMID: 29570264 PMCID: PMC5887086 DOI: 10.1021/acsami.8b01658] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 03/15/2018] [Indexed: 05/23/2023]
Abstract
Nitric oxide (NO) is a highly potent but short-lived endogenous radical with a wide spectrum of physiological activities. In this work, we developed an enzymatic approach to the site-specific synthesis of NO mediated by biocatalytic surface coatings. Multilayered polyelectrolyte films were optimized as host compartments for the immobilized β-galactosidase (β-Gal) enzyme through a screen of eight polycations and eight polyanions. The lead composition was used to achieve localized production of NO through the addition of β-Gal-NONOate, a prodrug that releases NO following enzymatic bioconversion. The resulting coatings afforded physiologically relevant flux of NO matching that of the healthy human endothelium. The antiproliferative effect due to the synthesized NO in cell culture was site-specific: within a multiwell dish with freely shared media and nutrients, a 10-fold inhibition of cell growth was achieved on top of the biocatalytic coatings compared to the immediately adjacent enzyme-free microwells. The physiological effect of NO produced via the enzyme prodrug therapy was validated ex vivo in isolated arteries through the measurement of vasodilation. Biocatalytic coatings were deposited on wires produced using alloys used in clinical practice and successfully mediated a NONOate concentration-dependent vasodilation in the small arteries of rats. The results of this study present an exciting opportunity to manufacture implantable biomaterials with physiological responses controlled to the desired level for personalized treatment.
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Affiliation(s)
- Anna K. Winther
- Department
of Chemistry, Department of Biomedicine, and iNano Interdisciplinary Nanoscience Centre, Aarhus University, Aarhus 8000, Denmark
| | - Betina Fejerskov
- Department
of Chemistry, Department of Biomedicine, and iNano Interdisciplinary Nanoscience Centre, Aarhus University, Aarhus 8000, Denmark
| | - Marja ter Meer
- Department of Radiology and Nuclear Medicine 766, Radboud University Medical Center, Nijmegen 6525, The Netherlands
| | - Najah B.S. Jensen
- Department
of Chemistry, Department of Biomedicine, and iNano Interdisciplinary Nanoscience Centre, Aarhus University, Aarhus 8000, Denmark
| | - Ross Dillion
- Fort Wayne Metals, Research and Development, Fort Wayne 46809, Indiana, United States
| | - Jeremy E. Schaffer
- Fort Wayne Metals, Research and Development, Fort Wayne 46809, Indiana, United States
| | - Rona Chandrawati
- Department
of Materials, Department of Bioengineering, and Institute of Biomedical
Engineering, Imperial College London, London SW7 2AZ, U.K.
| | - Molly M. Stevens
- Department
of Materials, Department of Bioengineering, and Institute of Biomedical
Engineering, Imperial College London, London SW7 2AZ, U.K.
| | - Leo J. Schultze Kool
- Department of Radiology and Nuclear Medicine 766, Radboud University Medical Center, Nijmegen 6525, The Netherlands
| | - Ulf Simonsen
- Department
of Chemistry, Department of Biomedicine, and iNano Interdisciplinary Nanoscience Centre, Aarhus University, Aarhus 8000, Denmark
| | - Alexander N. Zelikin
- Department
of Chemistry, Department of Biomedicine, and iNano Interdisciplinary Nanoscience Centre, Aarhus University, Aarhus 8000, Denmark
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Pahal S, Gakhar R, Raichur AM, Varma MM. Polyelectrolyte multilayers for bio-applications: recent advancements. IET Nanobiotechnol 2017; 11:903-908. [PMID: 29155388 PMCID: PMC8676474 DOI: 10.1049/iet-nbt.2017.0007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 06/09/2017] [Accepted: 07/17/2017] [Indexed: 11/25/2023] Open
Abstract
The synergistic relationship between structure and the bulk properties of polyelectrolyte multilayer (PEM) films has generated tremendous interest in their application for loading and release of bioactive species. Layer-by-layer assembly is the simplest, cost effective process for fabrication of such PEMs films, leading to one of the most widely accepted platforms for incorporating biological molecules with nanometre precision. The bulk reservoir properties of PEM films render them a potential candidate for applications such as biosensing, drug delivery and tissue engineering. Various biomolecules such as proteins, DNA, RNA or other desired molecules can be incorporated into the PEM stack via electrostatic interactions and various other secondary interactions such as hydrophobic interactions. The location and availability of the biological molecules within the PEM stack mediates its applicability in various fields of biomedical engineering such as programmed drug delivery. The development of advanced technologies for biomedical applications using PEM films has seen rapid progress recently. This review briefly summarises the recent successes of PEM being utilised for diverse bio-applications.
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Affiliation(s)
- Suman Pahal
- Centre for Nano Science and Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Ruchi Gakhar
- Department of Engineering Physics, University of Wisconsin, Madison, WI 53706, USA
| | - Ashok M Raichur
- Nanotechnology and Water Sustainability Unit, University of South Africa, Florida 1710, Johannesburg, South Africa
| | - Manoj M Varma
- Centre for Nano Science and Engineering, Indian Institute of Science, Bangalore 560012, India.
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Whitehead KA. Introduction to the BioTM special issue "Nucleic Acid Delivery: Enabling the Drugs of Tomorrow". Bioeng Transl Med 2016; 1:119-120. [PMID: 29313010 PMCID: PMC5675082 DOI: 10.1002/btm2.10039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 09/26/2016] [Indexed: 11/10/2022] Open
Affiliation(s)
- Kathryn A Whitehead
- Depts. of Chemical Engineering and Biomedical Engineering Carnegie Mellon University Pittsburgh PA 15213
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