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Nguyen KD, Dejean S, Nottelet B, Gautrot JE. Mechanical Evaluation of Hydrogel-Elastomer Interfaces Generated through Thiol-Ene Coupling. ACS APPLIED POLYMER MATERIALS 2023; 5:1364-1373. [PMID: 36817337 PMCID: PMC9926487 DOI: 10.1021/acsapm.2c01878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 01/06/2023] [Indexed: 06/18/2023]
Abstract
The formation of hybrid hydrogel-elastomer scaffolds is an attractive strategy for the formation of tissue engineering constructs and microfabricated platforms for advanced in vitro models. The emergence of thiol-ene coupling, in particular radical-based, for the engineering of cell-instructive hydrogels and the design of elastomers raises the possibility of mechanically integrating these structures without relying on the introduction of additional chemical moieties. However, the bonding of hydrogels (thiol-ene radical or more classic acrylate/methacrylate radical-based) to thiol-ene elastomers and alkene-functional elastomers has not been characterized in detail. In this study, we quantify the tensile mechanical properties of hybrid hydrogel samples formed of two elastomers bonded to a hydrogel material. We examine the impact of radical thiol-ene coupling on the crosslinking of both elastomers (silicone or polyesters) and hydrogels (based on thiol-ene crosslinking or diacrylate chemistry) and on the mechanics and failure behavior of the resulting hybrids. This study demonstrates the strong bonding of thiol-ene hydrogels to alkene-presenting elastomers with a range of chemistries, including silicones and polyesters. Overall, thiol-ene coupling appears as an attractive tool for the generation of strong, mechanically integrated, hybrid structures for a broad range of applications.
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Affiliation(s)
- Khai D.
Q. Nguyen
- Institute
of Bioengineering, Queen Mary, University
of London, Mile End Road, London E1 4NS, U.K.
- School
of Engineering and Materials Science, Queen
Mary, University of London, Mile End Road, London E1 4NS, U.K.
| | - Stéphane Dejean
- Polymers
for Health and Biomaterials, IBMM, Univ
Montpellier, CNRS, ENSCM, 34293 Montpellier, France
| | - Benjamin Nottelet
- Polymers
for Health and Biomaterials, IBMM, Univ
Montpellier, CNRS, ENSCM, 34293 Montpellier, France
| | - Julien E. Gautrot
- Institute
of Bioengineering, Queen Mary, University
of London, Mile End Road, London E1 4NS, U.K.
- School
of Engineering and Materials Science, Queen
Mary, University of London, Mile End Road, London E1 4NS, U.K.
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2
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Poly(Lactic Acid)-Based Graft Copolymers: Syntheses Strategies and Improvement of Properties for Biomedical and Environmentally Friendly Applications: A Review. Molecules 2022; 27:molecules27134135. [PMID: 35807380 PMCID: PMC9268542 DOI: 10.3390/molecules27134135] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 06/23/2022] [Accepted: 06/23/2022] [Indexed: 11/16/2022] Open
Abstract
As a potential replacement for petroleum-based plastics, biodegradable bio-based polymers such as poly(lactic acid) (PLA) have received much attention in recent years. PLA is a biodegradable polymer with major applications in packaging and medicine. Unfortunately, PLA is less flexible and has less impact resistance than petroleum-based plastics. To improve the mechanical properties of PLA, PLA-based blends are very often used, but the outcome does not meet expectations because of the non-compatibility of the polymer blends. From a chemical point of view, the use of graft copolymers as a compatibilizer with a PLA backbone bearing side chains is an interesting option for improving the compatibility of these blends, which remains challenging. This review article reports on the various graft copolymers based on a PLA backbone and their syntheses following two chemical strategies: the synthesis and polymerization of modified lactide or direct chemical post-polymerization modification of PLA. The main applications of these PLA graft copolymers in the environmental and biomedical fields are presented.
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3
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Beyond the Dilemmas: Design of PLA-PEG Assemblies Based on pH-Reversible Boronic Ester for the Synchronous PEG De-Shielding and Ligand Presentation to Hepatocytes. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12094225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A new polymeric construct is proposed as a starting material for a liver-targeted delivery system in the present communication. The polymeric material has been designed to be sensitive to pH variations and potentially loaded with hydrophobic antitumoral agents. It is based on one of the most used copolymers in the field of nanomedicine: PEG-PLA. The latter, usually obtained by polymerization of lactic acid on the hydroxyl-terminated polyether, is assembled by the pH-reversible condensation between a phenylboronic acid-ended methoxy PEG 2000 (MeO-PEG2000-PBA) and a galactose-capped PLA of 1–10 kDa (PLA-Gal). Our approach is based on the strategic assumption that would allow a new ligand presentation strategy in which Gal is both a structural element for the stimulus-responsive PEG de-shielding and the targeting moiety. Indeed, Gal has a vicinal diol able to form a reversible boronate ester with a B(OH) 2 residue, which is cleavable at the acidic pH of the tumor microenvironment, and it is also recognized by the asialoglycoprotein receptor, which is hyper-expressed on the membrane of hepatocytes. The functionalization of the two blocks is presented here, and they are characterized using NMR, FTIR, and GPC. The analytical evaluation of the ability of the boronated PEG and Gal to condense in a pH sensible way completes the study.
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4
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Kalelkar PP, Geng Z, Cox B, Finn MG, Collard DM. Surface-initiated atom-transfer radical polymerization (SI-ATRP) of bactericidal polymer brushes on poly(lactic acid) surfaces. Colloids Surf B Biointerfaces 2021; 211:112242. [PMID: 34929482 DOI: 10.1016/j.colsurfb.2021.112242] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 10/21/2021] [Accepted: 11/19/2021] [Indexed: 11/19/2022]
Abstract
We have modified the surface of poly(lactic acid) (PLA) by bromination in the presence of N-bromosuccinimide (NBS) under UV irradiation. This new approach to impart functionality to the surface does not effect the bulk of the material. Brominated PLA surfaces served as initiators for atom-transfer radical polymerization (SI-ATRP) of 2-(methacryloyloxy)ethyl]trimethylammonium chloride, a quaternary ammonium methacrylate (QMA). Grafting of poly(QMA) brushes rendered PLA films hydrophilic and these films displayed a three-order of magnitude increase in antimicrobial efficacy against Gram-negative bacteria such as Escherichia coli as compared to unmodified PLA. The two-step strategy described here to modify PLA surface represents a useful route to modified PLA materials for biomedical and antimicrobial packaging applications.
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Affiliation(s)
- Pranav P Kalelkar
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Zhishuai Geng
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Bronson Cox
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - M G Finn
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - David M Collard
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA.
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5
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Niu Y, Li S, Zhang J, Wan W, He Z, Liu J, Liu K, Ren S, Ge L, Du X, Gu Z. Static-Dynamic Fluorescence Patterns Based on Photodynamic Disulfide Reactions for Versatile Information Storage. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2102224. [PMID: 34310021 DOI: 10.1002/smll.202102224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/27/2021] [Indexed: 06/13/2023]
Abstract
Dynamic fluorescence patterns with variable output in response to external stimulus can make the current information storage technologies more flexible and intelligent. Yet it remains a great challenge to create such dynamic patterns because of the complicated synthesis process, high cost, limited stability, and biocompatibility of the functional fluorophores. Herein, a facile approach is presented for creating dynamic fluorescence patterns using the photodynamic surface chemistry based on disulfide bonds. By this method, high-resolution (≈20 µm) multicolor dynamic fluorescence patterns that are low-cost and dynamically rewritable can be easily fabricated using classical fluorophores such as fluorescein, rhodamine, and dansyl acid. Owing to the spatio-temporal controllability of light, the fluorescence patterns can be partly or entirely erased/rewritten on demand, and complex gray-level fluorescence images with increased information capacity can be easily generated. The obtained fluorescence patterns exhibit little changes after storing in air and solvent environments for 100 days, demonstrating their high stability. In addition, static patterns can also be created on the same disulfide surface using irreversible disulfide-ene chemistry, to selectively control the dynamicity of the generated fluorescence patterns. The authors show the successful application of this strategy on information protection and transformation.
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Affiliation(s)
- Yanfang Niu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Sen Li
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Junning Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Wang Wan
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Zhenzhu He
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Jun Liu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Keliang Liu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Sainan Ren
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Liqin Ge
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Xin Du
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Zhongze Gu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
- Institute of Biomaterials and Medical Devices (Suzhou), Southeast University, Suzhou, 215000, China
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6
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Xu Y, Wang H, Zhang M, Zhang J, Yan W. Plasmon-Enhanced Antibacterial Activity of Chiral Gold Nanoparticles and In Vivo Therapeutic Effect. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1621. [PMID: 34205616 PMCID: PMC8233931 DOI: 10.3390/nano11061621] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 06/09/2021] [Accepted: 06/15/2021] [Indexed: 01/19/2023]
Abstract
d-cysteine (d-cys) has been demonstrated to possess an extraordinary antibacterial activity because of its unique steric configuration. However, inefficient antibacterial properties seriously hinder its wide applications. Here, cysteine-functionalized gold nanoparticles (d-/l-Au NPs) were prepared by loading d-/l-cysteine on the surface of gold nanoparticles for the effective inhibition of Escherichia coli (E. coli) in vitro and in vivo, and the effects on the intestinal microflora in mice were explored during the treatment of E. coli infection in the gut. We found that the antibacterial activity of d-/l-Au NPs was more than 2-3 times higher than pure d-cysteine, l-cysteine and Au NPs. Compared with l-Au NPs, d-Au NPs showed the stronger antibacterial activity, which was related to its unique steric configuration. Chiral Au NPs showed stronger destructive effects on cell membrane compared to other groups, which further leads to the leakage of the cytoplasm and bacterial cell death. The in vivo antibacterial experiment illustrated that d-Au NPs displayed impressive antibacterial activity in the treatment of E. coli-infected mice comparable to kanamycin, whereas they could not affect the balance of intestinal microflora. This work is of great significance in the development of an effective chiral antibacterial agent.
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Affiliation(s)
| | | | | | | | - Wenjing Yan
- National Center of Meat Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; (Y.X.); (H.W.); (M.Z.); (J.Z.)
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7
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Ghosh R, Malhotra M, Sathe RR, Jayakannan M. Biodegradable Polymer Theranostic Fluorescent Nanoprobe for Direct Visualization and Quantitative Determination of Antimicrobial Activity. Biomacromolecules 2020; 21:2896-2912. [PMID: 32539360 DOI: 10.1021/acs.biomac.0c00653] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We report a biodegradable fluorescent theranostic nanoprobe design strategy for simultaneous visualization and quantitative determination of antibacterial activity for the treatment of bacterial infections. Cationic-charged polycaprolactone (PCL) was tailor-made through ring-opening polymerization methodology, and it was self-assembled into well-defined tiny 5.0 ± 0.1 nm aqueous nanoparticles (NPs) having a zeta potential of +45 mV. Excellent bactericidal activity at 10.0 ng/mL concentration was accomplished in Gram-negative bacterium Escherichia coli (E. coli) while maintaining their nonhemolytic nature in mice red blood cells (RBC) and their nontoxic trend in wild-type mouse embryonic fibroblast cells with a selectivity index of >104. Electron microscopic studies are evident of the E. coli membrane disruption mechanism by the cationic NP with respect to their high selectivity for antibacterial activity. Anionic biomarker 8-hydroxy-pyrene-1,3,6-trisulfonic acid (HPTS) was loaded in the cationic PCL NP via electrostatic interaction to yield a new fluorescent theranostic nanoprobe to accomplish both therapeutics and diagnostics together in a single nanosystem. The theranostic NP was readily degradable by a bacteria-secreted lipase enzyme as well as by lysosomal esterase enzymes at the intracellular compartments in <12 h and support their suitability for biomedical application. In the absence of bactericidal activity, the theranostic nanoprobe functions exclusively as a biomarker to exhibit strong green-fluorescent signals in live E. coli. Once it became active, the theranostic probe induces membrane disruption on E. coli, which enabled the costaining of nuclei by red fluorescent propidium iodide. As a result, live and dead bacteria could be visualized via green and orange signals (merging of red+green), respectively, during the course of the antibacterial activity by the theranostic probe. This has enabled the development of a new image-based fluorescence assay to directly visualize and quantitatively estimate the real-time antibacterial activity. Time-dependent bactericidal activity was coupled with selective photoexcitation in a confocal microscope to demonstrate the proof-of-concept of the working principle of a theranostic probe in E. coli. This new theranostic nanoprobe creates a new platform for the simultaneous probing and treating of bacterial infections in a single nanodesign, which is very useful for a long-term impact in healthcare applications.
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8
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Kalelkar PP, Geng Z, Finn MG, Collard DM. Azide-Substituted Polylactide: A Biodegradable Substrate for Antimicrobial Materials via Click Chemistry Attachment of Quaternary Ammonium Groups. Biomacromolecules 2019; 20:3366-3374. [DOI: 10.1021/acs.biomac.9b00504] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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9
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Combining Inulin Multifunctional Polycation and Magnetic Nanoparticles: Redox-Responsive siRNA-Loaded Systems for Magnetofection. Polymers (Basel) 2019; 11:polym11050889. [PMID: 31096623 PMCID: PMC6571810 DOI: 10.3390/polym11050889] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 05/03/2019] [Accepted: 05/09/2019] [Indexed: 11/16/2022] Open
Abstract
Superparamagnetic Iron Oxide Nanoparticles (SPIONs) are recognized as one of the most promising agents for theranostic applications. Among methods designed for siRNA delivery, magnetofection, that is, nucleic acid cell uptake under the influence of a magnetic field acting on magnetic nucleic acid vectors, is emerging as a unique approach to combining advantages such as strong improvement of the kinetics of the delivery process and the possibility of localizing nucleic acid delivery to an area where the magnetic field is applied. This paper reports on the preparation of siRNA loaded magnetoplexes—named ICD@SS@SPIONs/siRNA—by controlled crosslinking, in the presence of SPIONs, of the polycation INU-C-DETA, synthesized starting from the polysaccharide inulin by grafting diethylenetriamine and cystamine molecules. The obtained ICD@SS@SPIONs/siRNA have suitable chemical-physical characteristics to be employed for iv administration and are also able to release siRNA in a redox-triggered manner thanks to intracellular glutathione (GSH) mediated reduction of disulphide bridges formed during the crosslinking process. Moreover, ICD@SS@SPIONs/siRNA are able to produce magnetic targeting in vitro on breast cancer cells, without appreciable cyto- and hemo-toxic effects, in a wide range of concentrations. Finally, protein binding to nanoparticles revealed that obtained systems are potentially longer circulating and applicable as a smart multifunctional agents for cancer therapy.
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10
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Awada H, Al Samad A, Laurencin D, Gilbert R, Dumail X, El Jundi A, Bethry A, Pomrenke R, Johnson C, Lemaire L, Franconi F, Félix G, Larionova J, Guari Y, Nottelet B. Controlled Anchoring of Iron Oxide Nanoparticles on Polymeric Nanofibers: Easy Access to Core@Shell Organic-Inorganic Nanocomposites for Magneto-Scaffolds. ACS APPLIED MATERIALS & INTERFACES 2019; 11:9519-9529. [PMID: 30729776 DOI: 10.1021/acsami.8b19099] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Composites combining superparamagnetic iron oxide nanoparticles (SPIONs) and polymers are largely present in modern (bio)materials. However, although SPIONs embedded in polymer matrices are classically reported, the mechanical and degradation properties of the polymer scaffold are impacted by the SPIONs. Therefore, the controlled anchoring of SPIONs onto polymer surfaces is still a major challenge. Herein, we propose an efficient strategy for the direct and uniform anchoring of SPIONs on the surface of functionalized-polylactide (PLA) nanofibers via a simple free ligand exchange procedure to design PLA@SPIONs core@shell nanocomposites. The resulting PLA@SPIONs hybrid biomaterials are characterized by electron microscopy (scanning electron microscopy and transmission electron microscopy) and energy-dispersive X-ray spectroscopy analysis to probe the morphology and detect elements present at the organic-inorganic interface, respectively. A monolayer of SPIONs with a complete and homogeneous coverage is observed on the surface of PLA nanofibers. Magnetization experiments show that magnetic properties of the nanoparticles are well preserved after their grafting on the PLA fibers and that the size of the nanoparticles does not change. The absence of cytotoxicity, combined with a high sensitivity of detection in magnetic resonance imaging both in vitro and in vivo, makes these hybrid nanocomposites attractive for the development of magnetic biomaterials for biomedical applications.
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Affiliation(s)
- Hussein Awada
- IBMM, Université de Montpellier, CNRS, ENSCM , Montpellier , France
- ICGM, Université de Montpellier, CNRS, ENSCM , Montpellier , France
| | - Assala Al Samad
- IBMM, Université de Montpellier, CNRS, ENSCM , Montpellier , France
| | | | - Ryan Gilbert
- Department of Biomedical Engineering, Center for Biotechnology & Interdisciplinary Studies , Rensselaer Polytechnic Institute , Troy , New York 12180 , United States
| | - Xavier Dumail
- ICGM, Université de Montpellier, CNRS, ENSCM , Montpellier , France
| | - Ayman El Jundi
- IBMM, Université de Montpellier, CNRS, ENSCM , Montpellier , France
| | - Audrey Bethry
- IBMM, Université de Montpellier, CNRS, ENSCM , Montpellier , France
| | - Rebecca Pomrenke
- Department of Biomedical Engineering, Center for Biotechnology & Interdisciplinary Studies , Rensselaer Polytechnic Institute , Troy , New York 12180 , United States
| | - Christopher Johnson
- Department of Biomedical Engineering, Center for Biotechnology & Interdisciplinary Studies , Rensselaer Polytechnic Institute , Troy , New York 12180 , United States
| | - Laurent Lemaire
- Micro & Nanomédecines Translationnelles-MINT, UNIV Angers, INSERM U1066, CNRS UMR 6021 , Angers , France
- PRISM Plate-Forme de Recherche en Imagerie et Spectroscopie Multi-Modales, PRISM-Icat , Angers , France
| | - Florence Franconi
- Micro & Nanomédecines Translationnelles-MINT, UNIV Angers, INSERM U1066, CNRS UMR 6021 , Angers , France
- PRISM Plate-Forme de Recherche en Imagerie et Spectroscopie Multi-Modales, PRISM-Icat , Angers , France
| | - Gautier Félix
- ICGM, Université de Montpellier, CNRS, ENSCM , Montpellier , France
| | - Joulia Larionova
- ICGM, Université de Montpellier, CNRS, ENSCM , Montpellier , France
| | - Yannick Guari
- ICGM, Université de Montpellier, CNRS, ENSCM , Montpellier , France
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11
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Gay S, Lefebvre G, Bonnin M, Nottelet B, Boury F, Gibaud A, Calvignac B. PLA scaffolds production from Thermally Induced Phase Separation: Effect of process parameters and development of an environmentally improved route assisted by supercritical carbon dioxide. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2018.02.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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12
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KAN K, AJIRO H, AKASHI M. Chain End Modification of Polylactide Biomaterials and Investigation of Their Polymer-Polymer Interaction. KOBUNSHI RONBUNSHU 2018. [DOI: 10.1295/koron.2017-0059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kai KAN
- Institute for Research Initiatives, Division for Research Strategy, Nara Institute of Science and Technology
- Graduate School of Materials Science, Nara Institute of Science and Technology
| | - Hiroharu AJIRO
- Institute for Research Initiatives, Division for Research Strategy, Nara Institute of Science and Technology
- Graduate School of Materials Science, Nara Institute of Science and Technology
- JST, PRESTO
| | - Mitsuru AKASHI
- Graduate School of Frontier Biosciences, Osaka University
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13
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Kalelkar PP, Collard DM. Thiol-substituted copolylactide: synthesis, characterization and post-polymerization modification using thiol–ene chemistry. Polym Chem 2018. [DOI: 10.1039/c7py01930k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A copolylactide that is substituted with pendent thiol groups (thiol-PL) undergoes coupling with a variety of electrophiles under mild conditions via thiol–ene addition.
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Affiliation(s)
- Pranav P. Kalelkar
- School of Chemistry and Biochemistry
- Georgia Institute of Technology
- Atlanta
- USA
| | - David M. Collard
- School of Chemistry and Biochemistry
- Georgia Institute of Technology
- Atlanta
- USA
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14
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Yavvari PS, Gupta S, Arora D, Nandicoori VK, Srivastava A, Bajaj A. Clathrin-Independent Killing of Intracellular Mycobacteria and Biofilm Disruptions Using Synthetic Antimicrobial Polymers. Biomacromolecules 2017; 18:2024-2033. [DOI: 10.1021/acs.biomac.7b00106] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Prabhu S. Yavvari
- Department
of Chemistry, Indian Institute of Science Education and Research, Bhopal By-pass Road, Bhopal-462066, Madhya Pradesh, India
| | - Siddhi Gupta
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, Third Milestone Faridabad-Gurgaon Expressway, NCR Biotech Cluster, Faridabad-121001, Haryana, India
| | - Divya Arora
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, Delhi-110067, India
| | - Vinay K. Nandicoori
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, Delhi-110067, India
| | - Aasheesh Srivastava
- Department
of Chemistry, Indian Institute of Science Education and Research, Bhopal By-pass Road, Bhopal-462066, Madhya Pradesh, India
| | - Avinash Bajaj
- Laboratory
of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, Third Milestone Faridabad-Gurgaon Expressway, NCR Biotech Cluster, Faridabad-121001, Haryana, India
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15
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Concellón A, Asín L, González-Lana S, de la Fuente JM, Sánchez-Somolinos C, Piñol M, Oriol L. Photopolymers based on ethynyl-functionalized degradable polylactides by thiol-yne ‘Click Chemistry’. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.04.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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16
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Lang M, Schade A, Bräse S. Synthesis of three-dimensional porous hyper-crosslinked polymers via thiol-yne reaction. Beilstein J Org Chem 2017; 12:2570-2576. [PMID: 28144326 PMCID: PMC5238528 DOI: 10.3762/bjoc.12.252] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 11/15/2016] [Indexed: 01/24/2023] Open
Abstract
Herein we report the syntheses of two porous hyper-crosslinked polymers (HCPs) via thiol–yne reaction with rigid tetrahedral and pseudo-octahedral core structures. Sorption measurements with nitrogen gas at 77 K revealed BET-surface areas up to 650 m²/g. Those networks also showed a high thermal stability as well as insolubility in common organic solvents.
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Affiliation(s)
- Mathias Lang
- Institute of Organic Chemistry, Karlsruhe Institute of Technology - Campus South, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Alexandra Schade
- Institute of Organic Chemistry, Karlsruhe Institute of Technology - Campus South, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Stefan Bräse
- Institute of Organic Chemistry, Karlsruhe Institute of Technology - Campus South, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany; Institute of Toxicology and Genetics, Karlsruhe Institute of Technology - Campus North, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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17
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Vijayan VM, Shenoy SJ, Victor SP, Muthu J. Stimulus responsive nanogel with innate near IR fluorescent capability for drug delivery and bioimaging. Colloids Surf B Biointerfaces 2016; 146:84-96. [PMID: 27262258 DOI: 10.1016/j.colsurfb.2016.05.059] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 05/05/2016] [Accepted: 05/19/2016] [Indexed: 01/30/2023]
Abstract
A brighter, non toxic and biocompatible optical imaging agent is one of the major quests of biomedical research. Here in, we report a photoluminescent comacromer [PEG-poly(propylene fumarate)-citric acid-glycine] and novel stimulus (pH) responsive nanogel endowed with excitation wavelength dependent fluorescence (EDF) for combined drug delivery and bioimaging applications. The comacromer when excited at different wavelengths in visible region from 400nm to 640nm exhibits fluorescent emissions from 510nm to 718nm in aqueous condition. It has high Stokes shift (120nm), fluorescent lifetime (7 nanoseconds) and quantum yield (50%). The nanogel, C-PLM-NG, prepared with this photoluminescent comacromer and N,N-dimethyl amino ethylmethacrylate (DMEMA) has spherical morphology with particle size around 100nm and 180nm at pH 7.4 (physiological) and 5.5 (intracellular acidic condition of cancer cells) respectively. The studies on fluorescence characteristics of C-PLM NG in aqueous condition reveal large red-shift with emissions from 523nm to 700nm for excitations from 460nm to 600nm ascertaining the EDF characteristics. Imaging the near IR emission with excitation at 535nm was accomplished using cut-off filters. The nanogel undergoes pH responsive swelling and releases around 50% doxorubicin (DOX) at pH 5.5 in comparison with 15% observed at pH 7.4. The studies on in vitro cytotoxicity with MTT assay and hemolysis revealed that the present nanogel is non-toxic. The DOX-loaded C-PLM-NG encapsulated in Hela cells induces lysis of cancer cells. The inherent EDF characteristics associated with C-PLM NG enable cellular imaging of Hela cells. The studies on biodistribution and clearance mechanism of C-PLM-NG from the body of mice reveal bioimaging capability and safety of the present nanogel. This is the first report on a polymeric nanogel with innate near IR emissions for bioimaging applications.
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Affiliation(s)
- Vineeth M Vijayan
- Sree Chitra Tirunal Institute for Medical Sciences and Technology, Polymer Science Division, BMT Wing, Thiruvananthapuram 695012, Kerala, India
| | - Sachin J Shenoy
- Sree Chitra Tirunal Institute for Medical Sciences and Technology, Division of In vivo models and Testing, BMT Wing, Thiruvananthapuram 695012, Kerala, India
| | - Sunita P Victor
- Sree Chitra Tirunal Institute for Medical Sciences and Technology, Polymer Science Division, BMT Wing, Thiruvananthapuram 695012, Kerala, India
| | - Jayabalan Muthu
- Sree Chitra Tirunal Institute for Medical Sciences and Technology, Polymer Science Division, BMT Wing, Thiruvananthapuram 695012, Kerala, India.
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18
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Ajiro H, Ito S, Kan K, Akashi M. Catechin-Modified Polylactide Stereocomplex at Chain End Improved Antibiobacterial Property. Macromol Biosci 2016; 16:694-704. [PMID: 26789009 DOI: 10.1002/mabi.201500398] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Revised: 11/18/2015] [Indexed: 12/31/2022]
Abstract
Using different type of initiators, the antibacterial moieties are introduced at the chain end of poly(L,L-lactide) (PLLA) and poly(D,D-lactide) (PDLA), and the thermal properties are simultaneously improved using the stereocomplex approach. The physical interaction of polymers and antibacterial compounds is investigated. The double bonds at the chain end are utilized for the interaction of silver ion; however, the silver ions are not detected after stereocomplexation of PLLA and PDLA. On the other hand, catechin (CT) is selected as an initiator precursor of lactide polymerization, protecting the phenolic hydroxyl groups. The linear PLLA and PDLA are obtained by the initiator, resulting in CT conjugated PLAs at the chain end groups after deprotection of phenolic hydroxyl groups. The antibacterial properties are determined by proliferation tests of staphylococcus aureus. The results suggest that the antibacterial properties of CT modified PLAs are derived from the original CT parts.
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Affiliation(s)
- Hiroharu Ajiro
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan.,Institute for Research Initiatives, Division for Research Strategy, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan.,JST PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan.,Department of Applied Chemistry, Osaka University, 2-1, Yamada-oka, Suita, 565-0871, Japan.,The Center for Advanced Medical Engineering and Informatics, Osaka University, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Shogo Ito
- Department of Applied Chemistry, Osaka University, 2-1, Yamada-oka, Suita, 565-0871, Japan
| | - Kai Kan
- Institute for Research Initiatives, Division for Research Strategy, Nara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara, 630-0192, Japan
| | - Mitsuru Akashi
- Department of Applied Chemistry, Osaka University, 2-1, Yamada-oka, Suita, 565-0871, Japan.,The Center for Advanced Medical Engineering and Informatics, Osaka University, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan.,Graduate School of Frontier Biosciences, Osaka University, 2-1 Yamada-oka, Suita, 565-0871, Japan
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19
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Mauro N, Campora S, Adamo G, Scialabba C, Ghersi G, Giammona G. Polyaminoacid–doxorubicin prodrug micelles as highly selective therapeutics for targeted cancer therapy. RSC Adv 2016. [DOI: 10.1039/c6ra14935a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An amphiphilic copolymer carrying high-dose doxorubicin (21% on a weight basis), PHEA–EDA–P,C–Doxo, was prepared by coupling doxorubicin with a biocompatible polyaminoacid through a pH-sensitive spacer.
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Affiliation(s)
- N. Mauro
- Laboratory of Biocompatible Polymers
- Department of Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF)
- University of Palermo
- 32 90123 Palermo
- Italy
| | - S. Campora
- Department of Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF)
- University of Palermo
- 16 90128 Palermo
- Italy
| | - G. Adamo
- Department of Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF)
- University of Palermo
- 16 90128 Palermo
- Italy
| | - C. Scialabba
- Laboratory of Biocompatible Polymers
- Department of Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF)
- University of Palermo
- 32 90123 Palermo
- Italy
| | - G. Ghersi
- Department of Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF)
- University of Palermo
- 16 90128 Palermo
- Italy
| | - G. Giammona
- Laboratory of Biocompatible Polymers
- Department of Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF)
- University of Palermo
- 32 90123 Palermo
- Italy
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20
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Chen J, Ge J, Guo B, Gao K, Ma PX. Nanofibrous polylactide composite scaffolds with electroactivity and sustained release capacity for tissue engineering. J Mater Chem B 2016; 4:2477-2485. [DOI: 10.1039/c5tb02703a] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A conveniently fabricated electroactive nanofibrous composite scaffold serves as a sustained drug release system and promotes myoblast differentiation.
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Affiliation(s)
- Jing Chen
- Frontier Institute of Science and Technology, and State Key Laboratory for Mechanical Behavior of Materials
- Xi'an Jiaotong University
- Xi'an
- China
- Xi'an Modern Chemistry Research Institute
| | - Juan Ge
- Frontier Institute of Science and Technology, and State Key Laboratory for Mechanical Behavior of Materials
- Xi'an Jiaotong University
- Xi'an
- China
| | - Baolin Guo
- Frontier Institute of Science and Technology, and State Key Laboratory for Mechanical Behavior of Materials
- Xi'an Jiaotong University
- Xi'an
- China
| | - Kun Gao
- State Key Laboratory for Manufacturing Engineering
- Xi'an Jiaotong University
- Xi'an
- China
| | - Peter X. Ma
- Frontier Institute of Science and Technology, and State Key Laboratory for Mechanical Behavior of Materials
- Xi'an Jiaotong University
- Xi'an
- China
- Department of Biomedical Engineering
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21
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Nottelet B, Darcos V, Coudane J. Aliphatic polyesters for medical imaging and theranostic applications. Eur J Pharm Biopharm 2015; 97:350-70. [DOI: 10.1016/j.ejpb.2015.06.023] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 06/12/2015] [Accepted: 06/13/2015] [Indexed: 01/04/2023]
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22
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Al Samad A, Bakkour Y, Fanny C, El Omar F, Coudane J, Nottelet B. From nanospheres to micelles: simple control of PCL-g-PEG copolymers’ amphiphilicity through thiol–yne photografting. Polym Chem 2015. [DOI: 10.1039/c5py00391a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A unique combination of polyester post-polymerization modification and photoradical thiol–yne addition is reported for the synthesis of amphiphilic degradable graft copolymers with controlled compositions, used to prepare micelles or nanospheres.
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Affiliation(s)
- Assala Al Samad
- Institute of Biomolecules Max Mousseron (IBMM – CNRS UMR 5247)
- Department of Artificial Biopolymers – University of Montpellier
- France
- Laboratory of Applied Chemistry
- Doctoral School of Sciences and Technology
| | - Youssef Bakkour
- Laboratory of Applied Chemistry
- Doctoral School of Sciences and Technology
- Lebanese University
- Lebanon
| | - Coumes Fanny
- Institute of Biomolecules Max Mousseron (IBMM – CNRS UMR 5247)
- Department of Artificial Biopolymers – University of Montpellier
- France
| | - Fawaz El Omar
- Laboratory of Applied Chemistry
- Doctoral School of Sciences and Technology
- Lebanese University
- Lebanon
| | - Jean Coudane
- Institute of Biomolecules Max Mousseron (IBMM – CNRS UMR 5247)
- Department of Artificial Biopolymers – University of Montpellier
- France
| | - Benjamin Nottelet
- Institute of Biomolecules Max Mousseron (IBMM – CNRS UMR 5247)
- Department of Artificial Biopolymers – University of Montpellier
- France
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