1
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Siani A, Infante-Teixeira L, d'Arcy R, Roberts IV, El Mohtadi F, Donno R, Tirelli N. Polysulfide nanoparticles inhibit fibroblast-to-myofibroblast transition via extracellular ROS scavenging and have potential anti-fibrotic properties. BIOMATERIALS ADVANCES 2023; 153:213537. [PMID: 37406516 DOI: 10.1016/j.bioadv.2023.213537] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 06/06/2023] [Accepted: 06/22/2023] [Indexed: 07/07/2023]
Abstract
This paper is about the effects of reactive oxygen species (ROS) - and of their nanoparticle-mediated extracellular removal - in the TGF-β1-induced differentiation of fibroblasts (human dermal fibroblasts - HDFa) to more contractile myofibroblasts, and in the maintenance of this phenotype. Here, poly(propylene sulfide) (PPS) nanoparticles have been employed on 2D and 3D in vitro models, showing extremely low toxicity and undergoing negligible internalization, thereby ensuring an extracellular-only action. Firstly, PPS nanoparticles abrogated ROS-mediated downstream molecular events such as glutathione oxidation, NF-κB activation, and heme oxidase-1 (HMOX) overexpression. Secondly, PPS nanoparticles were also capable to inhibit, prevent and reverse the TGF-β1-induced upregulation of key biomechanical elements, such as ED-a fibronectin (EF-A FN) and alpha-smooth muscle actin (α-SMA), respectively markers of protomyofibroblastic and of myofibroblastic differentiation. We also confirmed that ROS alone are ineffective promoters of the myofibroblastic transition, although their presence contributes to its stabilization. Finally, the particles also countered TGF-β1-induced matrix- and tissue-level phenomena, e.g., the upregulation of collagen type 1, the development of aberrant collagen type 1/3 ratios and the contracture of HDFa 3D-seeded fibrin constructs. In short, experimental data at molecular, cellular and tissue levels show a significant potential in the use of PPS nanoparticles as anti-fibrotic agents.
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Affiliation(s)
- Alessandro Siani
- Division of Pharmacy and Optometry, School of Health Sciences, Stopford Building, The University of Manchester, Manchester M13 9PL, UK
| | - Lorena Infante-Teixeira
- Laboratory of Polymers and Biomaterials, Fondazione Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Richard d'Arcy
- Division of Pharmacy and Optometry, School of Health Sciences, Stopford Building, The University of Manchester, Manchester M13 9PL, UK; Laboratory of Polymers and Biomaterials, Fondazione Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy.
| | - Iwan V Roberts
- Division of Pharmacy and Optometry, School of Health Sciences, Stopford Building, The University of Manchester, Manchester M13 9PL, UK
| | - Farah El Mohtadi
- Division of Pharmacy and Optometry, School of Health Sciences, Stopford Building, The University of Manchester, Manchester M13 9PL, UK
| | - Roberto Donno
- Laboratory of Polymers and Biomaterials, Fondazione Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Nicola Tirelli
- Division of Pharmacy and Optometry, School of Health Sciences, Stopford Building, The University of Manchester, Manchester M13 9PL, UK; Laboratory of Polymers and Biomaterials, Fondazione Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy.
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2
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Le Luyer S, Guégan P, Illy N. Episulfide Anionic Ring-Opening Polymerization Initiated by Alcohols and Primary Amines in the Presence of γ-Thiolactones. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00431] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Simon Le Luyer
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 place Jussieu, F-75005 Paris, France
| | - Philippe Guégan
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 place Jussieu, F-75005 Paris, France
| | - Nicolas Illy
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 place Jussieu, F-75005 Paris, France
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3
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Zhang Y, Wang T, Bai J, You W. Repurposing Mitsunobu Reactions as a Generic Approach toward Polyethylene Derivatives. ACS Macro Lett 2022; 11:33-38. [PMID: 35574803 DOI: 10.1021/acsmacrolett.1c00689] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Broad scope of functionality and controllable degree of functionalization are intriguing goals for the development of polar-group-functionalized polyethylene materials. Herein, we propose a generic strategy of using widely available starting materials (i.e., poly(ethylene-co-vinyl acetate), EVA) and mild Mitsunobu functionalization conditions to prepare over 30 polyethylene derivatives. No noble transition metal catalysts (e.g., Ru, Mo, Pd, etc.) or corrosive/explosive reagents (e.g., HBr, NaN3, C2H4, H2, etc.) are used in the synthesis, while functional groups such as azide, aldehyde, norbornene, and thiol can be easily installed, with tunable content as high as 18 mol %. Using this practical method, we successfully prepared polyethylene-derivatized membranes with excellent antimicrobial and fluorescent properties.
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Affiliation(s)
- Yin Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Ting Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Jing Bai
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Wei You
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
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4
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Purohit VB, Pięta M, Pietrasik J, Plummer CM. Recent advances in the ring-opening polymerization of sulfur-containing monomers. Polym Chem 2022. [DOI: 10.1039/d2py00831a] [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
Inspired by the broad range of applications for sulfur-containing polymers, this article presents an overview regarding various ROP technologies (ROP/rROP/ROMP) which cement the importance of sulfur-containing monomers in modern polymer chemistry.
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Affiliation(s)
- Vishal B. Purohit
- International Centre for Research on Innovative Biobased Materials (ICRI-BioM)—International Research Agenda, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
| | - Marlena Pięta
- International Centre for Research on Innovative Biobased Materials (ICRI-BioM)—International Research Agenda, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
| | - Joanna Pietrasik
- Institute of Polymer and Dye Technology, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
| | - Christopher M. Plummer
- International Centre for Research on Innovative Biobased Materials (ICRI-BioM)—International Research Agenda, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
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5
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Scoponi G, Francini N, Paradiso V, Donno R, Gennari A, d’Arcy R, Capacchione C, Athanassiou A, Tirelli N. Versatile Preparation of Branched Polylactides by Low-Temperature, Organocatalytic Ring-Opening Polymerization in N-Methylpyrrolidone and Their Surface Degradation Behavior. Macromolecules 2021; 54:9482-9495. [PMID: 34720189 PMCID: PMC8552446 DOI: 10.1021/acs.macromol.1c01503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/16/2021] [Indexed: 11/28/2022]
Abstract
We describe how the organocatalytic, 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU)-based lactide ring-opening polymerization can be effectively performed in a very polar solvent, N-methylpyrrolidone (NMP). Due to a low ceiling temperature, this "living" mechanism has been unreported to date, but we here demonstrate that through a combination of low temperature and repeated monomer additions (starve-fed process), this mechanism enables the generation of a plethora of multifunctional homo- and (stereo)block-poly(lactide)s (PLAs) with exquisite control of the molecular weight dispersity (typically Đ < 1.1) and topology (from linear through 4-, 6-, or 8-armed stars and up to ∼140 armed combs). They are scarcely obtainable or inaccessible through more classical synthetic methods due to the poor solubility of multifunctional initiators (polyols) in most organic solvents and monomer melts. In these precisely designed structures, branching significantly altered the nature of the materials' hydrolytic degradation, allowing them to acquire a pronounced surface character (as opposed to the bulk degradation of linear polymers). Finally, we have assessed the amenability of this method to in situ block copolymerization by using the tacticity of PLLA blocks in PLLA-b-PDLLA versus PDLLA-b-PLLA (L-LA polymerized before or after DL-LA) as a sensitive method to detect (stereochemical) defects.
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Affiliation(s)
- Giulia Scoponi
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- DIBRIS, University of Genova, Via Opera Pia 13, 16145 Genova, Italy
| | - Nora Francini
- Laboratory
of Polymers Biomaterials, Istituto Italiano
di Tecnologia, Via Morego
30, 16163 Genoa, Italy
| | - Veronica Paradiso
- Department
of Chemistry and Biology “Adolfo Zambelli”, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
| | - Roberto Donno
- Laboratory
of Polymers Biomaterials, Istituto Italiano
di Tecnologia, Via Morego
30, 16163 Genoa, Italy
| | - Arianna Gennari
- Laboratory
of Polymers Biomaterials, Istituto Italiano
di Tecnologia, Via Morego
30, 16163 Genoa, Italy
| | - Richard d’Arcy
- Laboratory
of Polymers Biomaterials, Istituto Italiano
di Tecnologia, Via Morego
30, 16163 Genoa, Italy
| | - Carmine Capacchione
- Department
of Chemistry and Biology “Adolfo Zambelli”, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
| | | | - Nicola Tirelli
- Laboratory
of Polymers Biomaterials, Istituto Italiano
di Tecnologia, Via Morego
30, 16163 Genoa, Italy
- School
of Health Sciences, University of Manchester, Oxford Road, M13 9PL Manchester, U.K.
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6
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Infante Teixeira L, Landfester K, Thérien-Aubin H. Selective Oxidation of Polysulfide Latexes to Produce Polysulfoxide and Polysulfone in a Waterborne Environment. Macromolecules 2021; 54:3659-3667. [PMID: 34083842 PMCID: PMC8161668 DOI: 10.1021/acs.macromol.1c00382] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/28/2021] [Indexed: 11/27/2022]
Abstract
Polymers containing sulfur centers with high oxidation states in the main chain, polysulfoxide and polysulfone, display desirable properties such as thermomechanical and chemical stability. To circumvent their challenging direct synthesis, methods based on the oxidation of a parent polysulfide have been developed but are plagued by uncontrolled reactions, leading either to ill-defined mixtures of polysulfoxides and polysulfones or to polysulfones with reduced degrees of polymerization due to overoxidation of the polymer. We developed an alternative method to produce well-defined polysulfoxide and polysulfone in a waterborne colloidal emulsion using different oxidants to control the oxidation state of sulfur in the final materials. The direct oxidation of water-based polysulfide latexes avoided the use of volatile organic solvents and allowed for the control of the oxidation state of the sulfur atoms. Oxidation of parent polysulfides by tert-butyl hydroperoxide led to the production of pure polysulfoxides, even after 70 days of reaction time. Additionally, hydrogen peroxide produced both species through the course of the reaction but yielded fully converted polysulfones after 24 h. By employing mild oxidants, our approach controlled the oxidation state of the sulfur atoms in the final sulfur-containing polymer and prevented any overoxidation, thus ensuring the integrity of the polymer chains and colloidal stability of the system. We also verified the selectivity, versatility, and robustness of the method by applying it to polysulfides of different chemical compositions and structures. The universality demonstrated by this method makes it a powerful yet simple platform for the design of sulfur-containing polymers and nanoparticles.
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Affiliation(s)
| | - Katharina Landfester
- Max Planck Institute for
Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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7
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Geven M, d'Arcy R, Turhan ZY, El-Mohtadi F, Alshamsan A, Tirelli N. Sulfur-based oxidation-responsive polymers. Chemistry, (chemically selective) responsiveness and biomedical applications. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110387] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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8
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Cook A, Decuzzi P. Harnessing Endogenous Stimuli for Responsive Materials in Theranostics. ACS NANO 2021; 15:2068-2098. [PMID: 33555171 PMCID: PMC7905878 DOI: 10.1021/acsnano.0c09115] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 02/02/2021] [Indexed: 05/04/2023]
Abstract
Materials that respond to endogenous stimuli are being leveraged to enhance spatiotemporal control in a range of biomedical applications from drug delivery to diagnostic tools. The design of materials that undergo morphological or chemical changes in response to specific biological cues or pathologies will be an important area of research for improving efficacies of existing therapies and imaging agents, while also being promising for developing personalized theranostic systems. Internal stimuli-responsive systems can be engineered across length scales from nanometers to macroscopic and can respond to endogenous signals such as enzymes, pH, glucose, ATP, hypoxia, redox signals, and nucleic acids by incorporating synthetic bio-inspired moieties or natural building blocks. This Review will summarize response mechanisms and fabrication strategies used in internal stimuli-responsive materials with a focus on drug delivery and imaging for a broad range of pathologies, including cancer, diabetes, vascular disorders, inflammation, and microbial infections. We will also discuss observed challenges, future research directions, and clinical translation aspects of these responsive materials.
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Affiliation(s)
- Alexander
B. Cook
- Laboratory of Nanotechnology
for Precision Medicine, Istituto Italiano
di Tecnologia, Via Morego
30, 16163 Genova, Italy
| | - Paolo Decuzzi
- Laboratory of Nanotechnology
for Precision Medicine, Istituto Italiano
di Tecnologia, Via Morego
30, 16163 Genova, Italy
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9
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El Mohtadi F, d’Arcy R, Burke J, Rios De La Rosa JM, Gennari A, Marotta R, Francini N, Donno R, Tirelli N. “Tandem” Nanomedicine Approach against Osteoclastogenesis: Polysulfide Micelles Synergically Scavenge ROS and Release Rapamycin. Biomacromolecules 2019; 21:305-318. [DOI: 10.1021/acs.biomac.9b01348] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Farah El Mohtadi
- Division of Pharmacy and Optometry, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Richard d’Arcy
- Laboratory of Polymers and Biomaterials, Fondazione Istituto Italiano di Tecnologia, 16163 Genova, Italy
| | - Jason Burke
- Division of Pharmacy and Optometry, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Julio M. Rios De La Rosa
- Division of Pharmacy and Optometry, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Arianna Gennari
- Laboratory of Polymers and Biomaterials, Fondazione Istituto Italiano di Tecnologia, 16163 Genova, Italy
| | - Roberto Marotta
- Electron Microscopy Facility, Fondazione Istituto Italiano di Tecnologia, 16163 Genova, Italy
| | - Nora Francini
- Laboratory of Polymers and Biomaterials, Fondazione Istituto Italiano di Tecnologia, 16163 Genova, Italy
| | - Roberto Donno
- Laboratory of Polymers and Biomaterials, Fondazione Istituto Italiano di Tecnologia, 16163 Genova, Italy
| | - Nicola Tirelli
- Division of Pharmacy and Optometry, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
- Laboratory of Polymers and Biomaterials, Fondazione Istituto Italiano di Tecnologia, 16163 Genova, Italy
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10
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Pérez-Camargo RA, d’Arcy R, Iturrospe A, Arbe A, Tirelli N, Müller AJ. Influence of Chain Primary Structure and Topology (Branching) on Crystallization and Thermal Properties: The Case of Polysulfides. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02659] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Ricardo A. Pérez-Camargo
- POLYMAT and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
| | - Richard d’Arcy
- Division of Pharmacy & Optometry, University of Manchester, Manchester, M13 9PT, U.K
- Laboratory of Polymers and Biomaterials, Fondazione Istituto Italiano di Tecnologia, 16163 Genova, Italy
| | - Amaia Iturrospe
- Centro de Física de Materiales (CFM) (CSIC-UPV/EHU) - Materials Physics Center (MPC), Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
| | - Arantxa Arbe
- Centro de Física de Materiales (CFM) (CSIC-UPV/EHU) - Materials Physics Center (MPC), Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
| | - Nicola Tirelli
- Division of Pharmacy & Optometry, University of Manchester, Manchester, M13 9PT, U.K
- Laboratory of Polymers and Biomaterials, Fondazione Istituto Italiano di Tecnologia, 16163 Genova, Italy
| | - Alejandro J. Müller
- POLYMAT and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
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11
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El-Mohtadi F, d'Arcy R, Tirelli N. Oxidation-Responsive Materials: Biological Rationale, State of the Art, Multiple Responsiveness, and Open Issues. Macromol Rapid Commun 2018; 40:e1800699. [DOI: 10.1002/marc.201800699] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/13/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Farah El-Mohtadi
- Division of Pharmacy and Optometry; School of Health Sciences; Faculty of Biology; Medicine, and Health; The University of Manchester; Manchester M13 9PT UK
| | - Richard d'Arcy
- Laboratory of Polymers and Biomaterials; Fondazione Istituto Italiano di Tecnologia; 16163 Genova Italy
| | - Nicola Tirelli
- Division of Pharmacy and Optometry; School of Health Sciences; Faculty of Biology; Medicine, and Health; The University of Manchester; Manchester M13 9PT UK
- Laboratory of Polymers and Biomaterials; Fondazione Istituto Italiano di Tecnologia; 16163 Genova Italy
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12
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Kosakowska KA, Casey BK, Kurtz SL, Lawson LB, Grayson SM. Evaluation of Amphiphilic Star/Linear–Dendritic Polymer Reverse Micelles for Transdermal Drug Delivery: Directing Carrier Properties by Tailoring Core versus Peripheral Branching. Biomacromolecules 2018; 19:3163-3176. [DOI: 10.1021/acs.biomac.8b00680] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Karolina A. Kosakowska
- Department of Chemistry, School of Science and Engineering, Tulane University, New Orleans Louisiana 70118, United States
- Bioinnovation PhD Program, School of Science and Engineering, Tulane University, New Orleans Louisiana 70118, United States
| | - Brittany K. Casey
- Department of Chemistry, School of Science and Engineering, Tulane University, New Orleans Louisiana 70118, United States
| | - Samantha L. Kurtz
- Department of Microbiology and Immunology, School of Medicine, Tulane University, New Orleans Louisiana 70112, United States
- Bioinnovation PhD Program, School of Science and Engineering, Tulane University, New Orleans Louisiana 70118, United States
| | - Louise B. Lawson
- Department of Microbiology and Immunology, School of Medicine, Tulane University, New Orleans Louisiana 70112, United States
| | - Scott M. Grayson
- Department of Chemistry, School of Science and Engineering, Tulane University, New Orleans Louisiana 70118, United States
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13
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Yu L, Yang Y, Du FS, Li ZC. ROS-Responsive Chalcogen-Containing Polycarbonates for Photodynamic Therapy. Biomacromolecules 2018; 19:2182-2193. [PMID: 29669209 DOI: 10.1021/acs.biomac.8b00271] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Reactive oxygen species (ROS)-responsive polymers have attracted attention for their potential in photodynamic therapy. Herein, we report the ROS-responsive aliphatic polycarbonates prepared by the ring-opening polymerization (ROP) of three six-membered cyclic carbonate monomers with ethyl selenide, phenyl selenide or ethyl telluride groups. Under catalysis of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), all three monomers underwent the controlled anionic ROP, showing a feature of equilibrium polymerization due to the bulky effect of 5,5-disubstituents. With PEG macroinitiator, three series amphiphilic block copolymers were prepared. They could form spherical nanoparticles of ∼100 nm, which were stable in neutral phosphate buffer but dissociated rapidly under triggering of H2O2. We studied the H2O2-induced oxidation profiles of selenide- or telluride-containing small molecules by 1H NMR and revealed the factors that affect the oxidation kinetics and products. On this basis, the oxidative degradation mechanism of the copolymer nanoparticles has been clarified. Under the same oxidative condition, the telluride-containing nanoparticle degraded with the fastest rate while the phenyl selenide-based one degraded most slowly. These ROS-responsive nanoparticles could load photosensitizer chlorin e6 (Ce6) and anticancer drug doxorubicin (DOX). Under red light irradiation, Ce6-sensitized production of 1O2 that triggered the degradation of nanoparticles, resulting in an accelerated payload release. In vitro cytotoxicity assays demonstrate that the nanoparticles coloaded with DOX and Ce6 exhibited a synergistic cell-killing effect to MCF-7 cells, representing a novel responsive nanoplatform for PDT and/or chemotherapy.
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Affiliation(s)
- Li Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Department of Polymer Science and Engineering, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Yue Yang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Department of Polymer Science and Engineering, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Fu-Sheng Du
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Department of Polymer Science and Engineering, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Zi-Chen Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Department of Polymer Science and Engineering, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
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14
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Tarasova OA, Nedolya NA, Trofimov BA. Synthesis of glycidyl propargyl ether. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2017. [DOI: 10.1134/s1070428017110227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Yang DP, Oo MNNL, Deen GR, Li Z, Loh XJ. Nano-Star-Shaped Polymers for Drug Delivery Applications. Macromol Rapid Commun 2017; 38. [PMID: 28895248 DOI: 10.1002/marc.201700410] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 06/28/2017] [Indexed: 12/19/2022]
Abstract
With the advancement of polymer engineering, complex star-shaped polymer architectures can be synthesized with ease, bringing about a host of unique properties and applications. The polymer arms can be functionalized with different chemical groups to fine-tune the response behavior or be endowed with targeting ligands or stimuli responsive moieties to control its physicochemical behavior and self-organization in solution. Rheological properties of these solutions can be modulated, which also facilitates the control of the diffusion of the drug from these star-based nanocarriers. However, these star-shaped polymers designed for drug delivery are still in a very early stage of development. Due to the sheer diversity of macromolecules that can take on the star architectures and the various combinations of functional groups that can be cross-linked together, there remain many structure-property relationships which have yet to be fully established. This review aims to provide an introductory perspective on the basic synthetic methods of star-shaped polymers, the properties which can be controlled by the unique architecture, and also recent advances in drug delivery applications related to these star candidates.
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Affiliation(s)
- Da-Peng Yang
- College of Chemical Engineering & Materials Science, Quanzhou Normal University, Quanzhou, 362000, China
| | - Ma Nwe Nwe Linn Oo
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive Singapore, Singapore, 637459, Singapore
| | - Gulam Roshan Deen
- Soft Materials Laboratory, Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University, Singapore, 637459, Singapore
| | - Zibiao Li
- Institute of Materials Research and Engineering (IMRE), A*STAR, 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering (IMRE), A*STAR, 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore.,Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117576, Singapore
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16
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Aoyagi N, Endo T. A Catalyst-Free and Chemoselective Synthesis of Episulfides from Epoxides in 2,3-Butanediol without Formation of Poly(episulfide)s. ChemistrySelect 2017. [DOI: 10.1002/slct.201700583] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Naoto Aoyagi
- Molecular Engineering Institute; Kindai University; 11-6 Kayanomori, Iizuka Fukuoka 820-8555 Japan
| | - Takeshi Endo
- Molecular Engineering Institute; Kindai University; 11-6 Kayanomori, Iizuka Fukuoka 820-8555 Japan
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