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Sonzogni A, Cabrera G, Lupi G, Gugliotta L, Gonzalez V, Marcipar I, Minari R. Film Forming Nanogels for Needle-free Transdermal Vaccination. Macromol Biosci 2022; 22:e2100515. [PMID: 35388617 DOI: 10.1002/mabi.202100515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 03/21/2022] [Indexed: 11/06/2022]
Abstract
Transcutaneous immunization (TCI) provides a valuable alternative approach to conventional vaccination because of the high accessibility and the exceptional immunological characteristics of the skin, but its application is limited by the low permeability of the stratum corneum. Although nanogels (NGs) have proven to enhance skin penetration of macromolecules with minimum damage, their use in TCI remains almost unexplored. In this context, this article evaluates the performance of novel film forming NGs (FF-NGs) as TCI. This TCI platform consists of NGs with multilobular morphology that positively combines the properties of crosslinked poly(N-vinylcaprolactam), like thermoresponsiveness and the ability to load and release a cargo, with the film forming capacity of low Tg lobes. FF-NGs and formed films were characterized at different levels. Formed films show to be able to uniformly load an antigenic protein and release it with a profile depending on the temperature and on their FF-NGs content. In-vivo studies have demonstrated that FF-NGs promote the penetration of not only an antigenic protein but also an adjuvant until the immunocompetent area of skin, generating an adjuvant-dependent specific immune response. Finally, this study provides a successful proof of concept that FF-NGs could be a powerful tool for transcutaneous release of complex formulations. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ana Sonzogni
- Group of Polymers and Polymerization Reactors, INTEC (Universidad Nacional del Litoral-CONICET), Santa Fe, Argentina
| | - Gabriel Cabrera
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Giuliana Lupi
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Luis Gugliotta
- Group of Polymers and Polymerization Reactors, INTEC (Universidad Nacional del Litoral-CONICET), Santa Fe, Argentina.,Facultad de Ingeniería Química (Universidad Nacional del Litoral), Santa Fe, Argentina
| | - Verónica Gonzalez
- Group of Polymers and Polymerization Reactors, INTEC (Universidad Nacional del Litoral-CONICET), Santa Fe, Argentina.,Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Iván Marcipar
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Roque Minari
- Group of Polymers and Polymerization Reactors, INTEC (Universidad Nacional del Litoral-CONICET), Santa Fe, Argentina.,Facultad de Ingeniería Química (Universidad Nacional del Litoral), Santa Fe, Argentina
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Shrivastava S, Das A. Interaction between ethoxylated emulsifiers and propylene glycol based solvents: Gelation and rheology study. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123905] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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3
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Galembeck F. From Aqueous Dispersions to Functional Materials: Capillarity and Electrostatic Adhesion. CHEM REC 2018; 18:1054-1064. [DOI: 10.1002/tcr.201700048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 01/16/2018] [Indexed: 01/28/2023]
Affiliation(s)
- Fernando Galembeck
- Institute of Chemistry; University of Campinas; 13083-970 Campinas SP Brazil
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Wahdat H, Hirth C, Johannsmann D, Gerst M, Rückel M, Adams J. Film Formation of Pressure-Sensitive Adhesives (PSAs) Studied with Förster Resonance Energy Transfer (FRET) and Scattering Intensity. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00423] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hares Wahdat
- Institute of Physical Chemistry, Clausthal University of Technology, D-38678 Clausthal-Zellerfeld, Germany
| | - Christopher Hirth
- Institute of Physical Chemistry, Clausthal University of Technology, D-38678 Clausthal-Zellerfeld, Germany
| | - Diethelm Johannsmann
- Institute of Physical Chemistry, Clausthal University of Technology, D-38678 Clausthal-Zellerfeld, Germany
| | - Matthias Gerst
- Advanced Materials & Systems Research, BASF SE, D-67056 Ludwigshafen, Germany
| | - Markus Rückel
- Advanced Materials & Systems Research, BASF SE, D-67056 Ludwigshafen, Germany
| | - Jörg Adams
- Institute of Physical Chemistry, Clausthal University of Technology, D-38678 Clausthal-Zellerfeld, Germany
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XIAO J, FORAY G, MASENELLI-VARLOT K. Analysis of liquid suspensions using scanning electron microscopy in transmission: estimation of the water film thickness using Monte-Carlo simulations. J Microsc 2017; 269:151-160. [DOI: 10.1111/jmi.12619] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 07/07/2017] [Accepted: 07/30/2017] [Indexed: 11/30/2022]
Affiliation(s)
- J. XIAO
- INSA-Lyon, CNRS UMR 5510; Univ Lyon, MATEIS; F-69621 Villeurbanne France
| | - G. FORAY
- INSA-Lyon, CNRS UMR 5510; Univ Lyon, MATEIS; F-69621 Villeurbanne France
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Perret A, Foray G, Masenelli-Varlot K, Maire E, Yrieix B. Study of the surfactant role in latex-aerogel systems by scanning transmission electron microscopy on aqueous suspensions. J Microsc 2017; 269:3-13. [PMID: 28700079 DOI: 10.1111/jmi.12603] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 06/20/2017] [Accepted: 06/22/2017] [Indexed: 01/10/2023]
Abstract
For insulation applications, boards thinner than 2 cm are under design with specific thermal conductivities lower than 15 mW m-1 K-1 . This requires binding slightly hydrophobic aerogels which are highly nanoporous granular materials. To reach this step and ensure insulation board durability at the building scale, it is compulsory to design, characterise and analyse the microstructure at the nanoscale. It is indeed necessary to understand how the solid material is formed from a liquid suspension. This issue is addressed in this paper through wet-STEM experiments carried out in an Environmental Scanning Electron Microscope (ESEM). Latex-surfactant binary blends and latex-surfactant-aerogel ternary systems are studied, with two different surfactants of very different chemical structures. Image analysis is used to distinguish the different components and get quantitative morphological parameters which describe the sample architecture. The evolution of such morphological parameters during water evaporation permits a good understanding of the role of the surfactant.
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Affiliation(s)
- A Perret
- Univ Lyon, INSA-Lyon, UCBL, MATEIS, CNRS UMR5510, F-69621, Villeurbanne, France
| | - G Foray
- Univ Lyon, INSA-Lyon, UCBL, MATEIS, CNRS UMR5510, F-69621, Villeurbanne, France
| | - K Masenelli-Varlot
- Univ Lyon, INSA-Lyon, UCBL, MATEIS, CNRS UMR5510, F-69621, Villeurbanne, France
| | - E Maire
- Univ Lyon, INSA-Lyon, UCBL, MATEIS, CNRS UMR5510, F-69621, Villeurbanne, France
| | - B Yrieix
- EDF R&D, MMC, Avenue des Renardières - Ecuelles -77818 MORET SUR LOING, Cedex, France
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Li P, Nian F, Zhang M, Shen M, Dai Y, Pang H, Liao B. Siloxane-modified polyacrylate low-residual pressure-sensitive adhesive with high peeling strength. J Appl Polym Sci 2016. [DOI: 10.1002/app.42975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pengjuan Li
- Key Laboratory of Cellulose and Lignocelluloses Chemistry; Guangzhou Institute of Chemistry, Chinese Academy of Sciences, 368 Xingke Rd, Tianhe District; Guangzhou 510650 China
- University of Chinese Academy of Sciences, 19 Yuquan Rd, Shijingshan District; Beijing 100049 China
| | - Fuwei Nian
- Key Laboratory of Cellulose and Lignocelluloses Chemistry; Guangzhou Institute of Chemistry, Chinese Academy of Sciences, 368 Xingke Rd, Tianhe District; Guangzhou 510650 China
- University of Chinese Academy of Sciences, 19 Yuquan Rd, Shijingshan District; Beijing 100049 China
| | - Min Zhang
- Foshan University, 15 Jiangwan Rd, Chancheng District, Foshan, 528000; Foshan China
| | - Minmin Shen
- Key Laboratory of Cellulose and Lignocelluloses Chemistry; Guangzhou Institute of Chemistry, Chinese Academy of Sciences, 368 Xingke Rd, Tianhe District; Guangzhou 510650 China
| | - Yongqiang Dai
- Key Laboratory of Cellulose and Lignocelluloses Chemistry; Guangzhou Institute of Chemistry, Chinese Academy of Sciences, 368 Xingke Rd, Tianhe District; Guangzhou 510650 China
- University of Chinese Academy of Sciences, 19 Yuquan Rd, Shijingshan District; Beijing 100049 China
| | - Hao Pang
- Key Laboratory of Cellulose and Lignocelluloses Chemistry; Guangzhou Institute of Chemistry, Chinese Academy of Sciences, 368 Xingke Rd, Tianhe District; Guangzhou 510650 China
- Guangzhou Guangzhou Institute of Chemistry Green Building Materials Academy, 368 Xingke Rd, Tianhe District; Guangzhou 510650 China
| | - Bing Liao
- Key Laboratory of Cellulose and Lignocelluloses Chemistry; Guangzhou Institute of Chemistry, Chinese Academy of Sciences, 368 Xingke Rd, Tianhe District; Guangzhou 510650 China
- Guangzhou Guangzhou Institute of Chemistry Green Building Materials Academy, 368 Xingke Rd, Tianhe District; Guangzhou 510650 China
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Staniewicz L, Donald AM, Stokes DJ, Thomson N, Sivaniah E, Grant A, Bulmer D, Khan A. The application of STEM and in situ controlled dehydration to bacterial systems using ESEM. SCANNING 2012; 34:237-246. [PMID: 22689513 DOI: 10.1002/sca.21000] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Accepted: 10/19/2011] [Indexed: 06/01/2023]
Abstract
Transmission imaging with an environmental scanning electron microscope (ESEM) (Wet STEM) is a recent development in the field of electron microscopy, combining the simple preparation inherent to ESEM work with an alternate form of contrast available through a STEM detector. Because the technique is relatively new, there is little information available on how best to apply this technique and which samples it is best suited for. This work is a description of the sample preparation and microscopy employed by the authors for imaging bacteria with Wet STEM (scanning transmission electron microscopy). Three different bacterial samples will be presented in this study: first, used as a model system, is Escherichia coli for which the contrast mechanisms of STEM are demonstrated along with the visual effects of a dehydration-induced collapse. This collapse, although clearly in some sense artifactual, is thought to lead to structurally meaningful morphological information. Second, Wet STEM is applied to two distinct bacterial systems to demonstrate the novel types of information accessible by this approach: the plastic-producing Cupriavidus necator along with wild-type and ΔmreC knockout mutants of Salmonella enterica serovar Typhimurium. Cupriavidus necator is shown to exhibit clear internal differences between bacteria with and without plastic granules, while the ΔmreC mutant of S. Typhimurium has an internal morphology distinct from that of the wild type.
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Affiliation(s)
- Lech Staniewicz
- Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
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Arnold C, Klein G, Maaloum M, Ernstsson M, Larsson A, Marie P, Holl Y. Surfactant distribution in waterborne acrylic films. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2010.11.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Wang T, de las Heras Alarcón C, Goikoetxea M, Beristain I, Paulis M, Barandiaran MJ, Asua JM, Keddie JL. Cross-linked network development in compatibilized alkyd/acrylic hybrid latex films for the creation of hard coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:14323-14333. [PMID: 20704338 DOI: 10.1021/la102392x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Hybrids made from an alkyd resin and an acrylic copolymer can potentially combine the desired properties of each component. Alkyd/acrylic hybrid latex particles were synthesized via miniemulsion polymerization and used to create films at room temperature. Comparisons of the alkyd auto-oxidative cross-linking rates and the associated network development are made between two alkyd resins (with differing levels of hydrophilicity as measured by their acid numbers). The effects of increasing the compatibilization between the alkyd and the acrylic phase via functionalization with glycidyl methacrylate (GMA) are investigated. Magnetic resonance profiling and microindentation measurements reveal that film hardening occurs much faster in a GMA-functionalized alkyd hybrid than in the standard hybrid. The film's hardness increases by a factor of 4 over a 5-day period. The rate of cross-linking is significantly slower in nonfunctionalized alkyd hybrid films and when the more hydrophilic alkyd resin is used. Tensile deformation of the hybrid latex films reveals the effects of GMA functionalization and drier concentration in creating a denser cross-linked network. Modeling of the tensile deformation behavior of the hybrid films used a combination of the upper convected Maxwell model (to describe the viscoelastic component) and the Gent model (to describe the elastic component). The modeling provides a correlation between the cross-linked network formation and the resulting mechanical properties.
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Affiliation(s)
- Tao Wang
- Department of Physics and Surrey Materials Institute, University of Surrey, Guildford GU2 7XH, UK
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