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Thermal stability of ordered multi-particle layers of long-chain phosphonate-modified nanodiamond with superior heat-resistance. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.08.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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2
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Gamarra A, Muñoz-Guerra S, Martínez de Ilarduya A, Thérien-Aubin H, Landfester K. Comblike Ionic Complexes of Hyaluronic Acid and Alkanoylcholine Surfactants as a Platform for Drug Delivery Systems. Biomacromolecules 2018; 19:3669-3681. [PMID: 30037226 DOI: 10.1021/acs.biomac.8b00783] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nontoxic alkanoylcholine soaps ( nACh) were synthesized from choline and fatty acids with numbers of carbons n equal to 12, 14, 16, and 18, the latter including both saturated and 9- cis unsaturated alkanoyl chains. Coupling of nACh with hyaluronic acid (HyA) rendered comblike ionic complexes nACh·HyA that were non-water-soluble. The complexes were thermally stable up to temperatures above 200 °C but readily degraded by water, in particular when hyaluronidases were present in the aqueous medium. In the solid state, these complexes were self-assembled in a biphasic layered structure in which the surfactant and the polysaccharide phases were alternating regularly with a periodicity dependent on the length of the alkanoyl chain. The paraffinic phase was found to be crystallized in saturated complexes with n ≥ 14, but only 18ACh·HyA showed reversible melting crystallization when subjected to cyclic heating-cooling treatment. Nanoparticles with diameters in the 50-150 nm range were prepared by ionotropic gelation from unbalanced 18ACh·HyA complexes with surfactant:HyA ratios of 0.5 and 0.25. These nanoparticles were also structured in layers, swelled slowly in water, and shown to be noncytotoxic in in vitro assays against macrophages cells. It was also shown that the anticancer drug doxorubicin was efficiently encapsulated in both films and NPs of 18ACh·HyA, and its release was shown to be almost linear and complete after one day of incubation in physiological medium. The nACh·HyA complexes constitute a highly promising biocompatible/biodegradable platform for the design of systems suitable for drug transport and targeting delivery in anticancer chemotherapy.
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Affiliation(s)
- Ana Gamarra
- Universitat Politècnica de Catalunya, ETSEIB, Diagonal 647 , 08028 Barcelona , Spain
| | | | | | | | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10 , 55128 Mainz , Germany
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Antibacterial Films Made of Ionic Complexes of Poly(γ-glutamic acid) and Ethyl Lauroyl Arginate. Polymers (Basel) 2017; 10:polym10010021. [PMID: 30966055 PMCID: PMC6414889 DOI: 10.3390/polym10010021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 12/15/2017] [Accepted: 12/20/2017] [Indexed: 11/21/2022] Open
Abstract
The biocide agent LAE (ethyl αN-lauroyl l-arginate chloride) was coupled with poly(γ-glutamic acid) (PGGA) to form stable ionic complexes with LAE:PGGA ratios of 1 and 0.5. The nanostructure adopted by these complexes and its response to thermal changes were examined in detail by Differential scanning calorimetry (DSC) and X-ray diffraction (XRD) using synchrotron radiation in real time. A layered biphasic structure with LAE filling the space between the polypeptidic sheets was adopted in these complexes. The complexes were stable up to above 250 °C, non-water soluble, and were able to form consistent transparent films. The release of LAE from the complexes upon incubation in aqueous buffer was examined and found to depend on both pH and complex composition. The antibacterial activity of films made of these complexes against Gram-positive (L. monocytogenes and S. aureus) and Gram-negative (E. coli and S. enterica) bacteria was preliminary evaluated and was found to be very high against the formers and only moderate against the later. The bactericide activity displayed by the LAE·PGGA complexes was directly related with the amount of LAE that was released from the film to the environment.
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Chen J, Li M, He W, Tao Y, Wang X. Facile Organocatalyzed Synthesis of Poly(ε-lysine) under Mild Conditions. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b02331] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jinlong Chen
- Key Laboratory of Polymer Ecomaterials,
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, China
| | - Maosheng Li
- Key Laboratory of Polymer Ecomaterials,
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, China
| | - Wenjing He
- Key Laboratory of Polymer Ecomaterials,
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, China
| | - Youhua Tao
- Key Laboratory of Polymer Ecomaterials,
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, China
| | - Xianhong Wang
- Key Laboratory of Polymer Ecomaterials,
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, China
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Gamarra A, Martínez de Ilarduya A, Vives M, Morató J, Muñoz-Guerra S. Ionic complexes of poly(γ-glutamic acid) with alkyltrimethylphosphonium surfactants. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.03.065] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Hofman AH, ten Brinke G, Loos K. Hierarchical structure formation in supramolecular comb-shaped block copolymers. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.08.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hofman AH, Chen Y, ten Brinke G, Loos K. Interaction Strength in Poly(4-vinylpyridine)–n-Alkylphenol Supramolecular Comb-Shaped Copolymers. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00141] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Anton H. Hofman
- Department of Polymer Chemistry,
Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Yexing Chen
- Department of Polymer Chemistry,
Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Gerrit ten Brinke
- Department of Polymer Chemistry,
Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Katja Loos
- Department of Polymer Chemistry,
Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Hofman AH, Reza M, Ruokolainen J, ten Brinke G, Loos K. Hierarchical Self-Assembly of Symmetric Supramolecular Double-Comb Diblock Copolymers: a Comb Density Study. Macromolecules 2014. [DOI: 10.1021/ma501257x] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Anton H. Hofman
- Department
of Polymer Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Mehedi Reza
- Department
of Applied Physics, Aalto University, P.O. Box 11100, FI-00076 Aalto, Finland
| | - Janne Ruokolainen
- Department
of Applied Physics, Aalto University, P.O. Box 11100, FI-00076 Aalto, Finland
| | - Gerrit ten Brinke
- Department
of Polymer Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Katja Loos
- Department
of Polymer Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Tolentino A, Alla A, Martínez de Ilarduya A, Muñoz-Guerra S. Complexes of polyglutamic acid and long-chain alkanoylcholines: Nanoparticle formation and drug release. Int J Biol Macromol 2014; 66:346-53. [DOI: 10.1016/j.ijbiomac.2014.02.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Revised: 02/17/2014] [Accepted: 02/19/2014] [Indexed: 10/25/2022]
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10
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Tolentino A, Alla A, Martínez de Ilarduya A, Font-Bardía M, León S, Muñoz-Guerra S. Thermal behavior of long-chain alkanoylcholine soaps. RSC Adv 2014. [DOI: 10.1039/c3ra47049k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Long-chain alkanoylcholines prepared from fatty acids adopt a diversity of thermally interconvertible phases made of a bilayered structure with alkanoyl chains crystallized or interdigitated in a more or less extent depending on temperature and alkanoyl chain length.
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Affiliation(s)
- Ainhoa Tolentino
- Departament d'Enginyeria Química
- Universitat Politècnica de Catalunya
- ETSEIB
- Barcelona 08028, Spain
| | - Abdelilah Alla
- Departament d'Enginyeria Química
- Universitat Politècnica de Catalunya
- ETSEIB
- Barcelona 08028, Spain
| | | | - Mercè Font-Bardía
- Centre Cientific i Tecnològic (CCiTUB)
- Universitat de Barcelona
- Barcelona 08028, Spain
| | - Salvador León
- Departmento de Ingeniería Química
- Universidad Politécnica de Madrid
- ETSIIM
- Madrid 28006, Spain
| | - Sebastián Muñoz-Guerra
- Departament d'Enginyeria Química
- Universitat Politècnica de Catalunya
- ETSEIB
- Barcelona 08028, Spain
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