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Farias-Mancilla B, Balestri A, Zhang J, Frielinghaus H, Berti D, Montis C, Destarac M, Schubert US, Guerrero-Sanchez C, Harrisson S, Lonetti B. Morphology and thermal transitions of self-assembled NIPAM-DMA copolymers in aqueous media depend on copolymer composition profile. J Colloid Interface Sci 2024; 662:99-108. [PMID: 38340518 DOI: 10.1016/j.jcis.2024.02.032] [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: 10/13/2023] [Revised: 01/18/2024] [Accepted: 02/04/2024] [Indexed: 02/12/2024]
Abstract
HYPOTHESIS There is a lack of understanding of the interplay between the copolymer composition profile and thermal transition observed in aqueous solutions of N-isopropyl acrylamide (NIPAM) copolymers, as well as the correlation between this transition and the formation and structure of copolymer self-assemblies. EXPERIMENTS For this purpose, we investigated the response of five copolymers with the same molar mass and chemical composition, but with different composition profile in aqueous solution against temperature. Using complementary analytical techniques, we probed structural properties at different length scales, from the molecular scale with Nuclear Magnetic Resonance (NMR) to the colloidal scale with Dynamic Light Scattering (DLS) and Small Angle Neutron Scattering (SANS). FINDINGS NMR and SANS investigations strengthen each other and allow a clear picture of the change of copolymer solubility and related copolymer self-assembly as a function of temperature. At the molecular scale, dehydrating NIPAM units drag N,N-dimethyl acrylamide (DMA) moieties with them in a gradual collapse of the copolymer chain; this induces a morphological transition of the self-assemblies from star-like nanostructures to crew-cut micelles. Interestingly, the transition spans a temperature range which depends on the monomer distribution profile in the copolymer chain, with the asymmetric triblock copolymer specimen revealing the broadest one. We show that the broad morphological transitions associated with gradient copolymers can be mimicked and even surpassed by the use of stepwise gradient (asymmetric) copolymers, which can be more easily and reproducibly synthesized than linear gradient copolymers.
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Affiliation(s)
- Barbara Farias-Mancilla
- Laboratoire Softmat, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France
| | - Arianna Balestri
- Department of Chemistry "Ugo Schiff", University of Florence and CSGI, Florence, Italy
| | - Junliang Zhang
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Jena, Germany
| | - Henrich Frielinghaus
- Forschungszentrum Jülich GmbH, Jülich Center for Neutron Science at Heinz Maier-Leibnitz Zentrum, Lichtenbergstrasse 1, 85747 Garching, Germany
| | - Debora Berti
- Department of Chemistry "Ugo Schiff", University of Florence and CSGI, Florence, Italy
| | - Costanza Montis
- Department of Chemistry "Ugo Schiff", University of Florence and CSGI, Florence, Italy
| | - Mathias Destarac
- Laboratoire Softmat, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France
| | - Ulrich S Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Jena, Germany
| | - Carlos Guerrero-Sanchez
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Jena, Germany; Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Jena, Germany.
| | - Simon Harrisson
- LCPO, CNRS/Bordeaux-INP/Université de Bordeaux, Pessac, France.
| | - Barbara Lonetti
- Laboratoire Softmat, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France.
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Icriverzi M, Florian PE, Bonciu A, Dumitrescu LN, Moldovan A, Pelinescu D, Ionescu R, Avram I, Munteanu CVA, Sima LE, Dinca V, Rusen L, Roseanu A. Hybrid bio-nanoporous peptide loaded-polymer platforms with anticancer and antibacterial activities. NANOSCALE ADVANCES 2024; 6:2038-2058. [PMID: 38633049 PMCID: PMC11019497 DOI: 10.1039/d3na00947e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 02/26/2024] [Indexed: 04/19/2024]
Abstract
In this study, hybrid bio-nanoporous peptides loaded onto poly(N-isopropylacrylamide-co-butylacrylate) (pNIPAM-co-BA) coatings were designed and obtained via matrix-assisted pulsed laser evaporation (MAPLE) technique. The incorporation of cationic peptides magainin (MG) and melittin (Mel) and their combination was tailored to target synergistic anticancer and antibacterial activities with low toxicity on normal mammalian cells. Atomic force microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy as well as contact angle and surface energy measurements revealed the successful and functional incorporation of both the peptides within porous polymeric nanolayers as well as surface modifications (i.e. variation in the pore size diameter, surface roughness, and wettability) after Mel, MG or Mel-MG incorporation compared to pNIPAM-co-BA. In vitro testing revealed the impairment of biofilm formation on all the hybrid coatings while testing with S. aureus, E. coli and P. aeruginosa. Moreover, MG was shown to modulate the effect of Mel in the combined Mel-MG extract formulation released via pNIPAM-platforms, thus significantly reducing cancer cell proliferation through apoptosis/necrosis as revealed by flow cytometry analysis performed in vitro on HEK293T, A375, B16F1 and B16F10 cells. To the best of our knowledge, Mel-MG combination entrapped in the pNIPAM-co-BA copolymer has not yet been reported as a new promising candidate with anticancer and antibacterial properties for improved utility in the biomedical field. Mel-MG incorporation compared to pNIPAM-co-BA in in vitro testing revealed the impairment of biofilm formation in all the hybrid formulations.
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Affiliation(s)
- Madalina Icriverzi
- Institute of Biochemistry of the Romanian Academy 060031 Bucharest Romania
| | | | - Anca Bonciu
- National Institute for Lasers, Plasma, and Radiation Physics 409 Atomistilor Street 077125 Magurele Romania
| | | | - Antoniu Moldovan
- National Institute for Lasers, Plasma, and Radiation Physics 409 Atomistilor Street 077125 Magurele Romania
| | - Diana Pelinescu
- Faculty of Biology, University of Bucharest, Department of Genetics Intrarea Portocalelor no. 1-3, Sector 6 Bucharest Romania
| | - Robertina Ionescu
- Faculty of Biology, University of Bucharest, Department of Genetics Intrarea Portocalelor no. 1-3, Sector 6 Bucharest Romania
| | - Ionela Avram
- Faculty of Biology, University of Bucharest, Department of Genetics Intrarea Portocalelor no. 1-3, Sector 6 Bucharest Romania
| | | | - Livia Elena Sima
- Institute of Biochemistry of the Romanian Academy 060031 Bucharest Romania
| | - Valentina Dinca
- National Institute for Lasers, Plasma, and Radiation Physics 409 Atomistilor Street 077125 Magurele Romania
| | - Laurentiu Rusen
- National Institute for Lasers, Plasma, and Radiation Physics 409 Atomistilor Street 077125 Magurele Romania
| | - Anca Roseanu
- Institute of Biochemistry of the Romanian Academy 060031 Bucharest Romania
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3
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Navrátilová T, Havlík M, Tatar A, Hricková K, Dolenský B. Silicas with Covalently Anchored Fluorosolvatochromic Dyes Suitable for Naked-Eye Detection of Colourless Compounds. Molecules 2024; 29:673. [PMID: 38338417 PMCID: PMC10856631 DOI: 10.3390/molecules29030673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 01/26/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024] Open
Abstract
In this work, two stilbene derivatives with different substituents on the phenolic core (phenyl and dimethoxyphenyl) were prepared. The fluorosolvatochromic response of their N-propylated derivatives was studied in a solution of twelve different solvents using UV-Vis absorption and fluorescence emission spectra. Both stilbazolium dyes showed a significant negative solvatochromic effect, with a hypsochromic shift in the visible absorption band of approximately 232 nm and 265 nm for phenyl and the dimethoxyphenyl derivative, respectively, when the solvent was changed from water to pyridine. The stilbene derivatives were subsequently N-alkylated with (3-iodopropyl)trimethoxysilane and covalently anchored to the silica surface. The fluorosolvatochromic response of the prepared silicas compared to N-propylated dyes was then evaluated colorimetrically under daylight and UV illumination. The fluorosolvatochromic behaviour of the anchored dyes was preserved on the silica surface; therefore, the modified silicas could be used for the visual detection of colourless liquids.
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Affiliation(s)
| | | | | | | | - Bohumil Dolenský
- Department of Analytical Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague, Czech Republic; (T.N.); (M.H.); (A.T.)
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Zhang K, Zhou Y, Moreno S, Schwarz S, Boye S, Voit B, Appelhans D. Reversible crowdedness of pH-responsive and host-guest active polymersomes: Mimicking µm-sized cell structures. J Colloid Interface Sci 2024; 654:1469-1482. [PMID: 37858368 DOI: 10.1016/j.jcis.2023.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/15/2023] [Accepted: 10/04/2023] [Indexed: 10/21/2023]
Abstract
The structure-function characteristics of isolated artificial organelles (AOs) in protocells are mainly known, but there are few reports on clustered or aggregated AOs. To imitate µm-sized complex and heterogeneous cell structures, approaches are needed that enable reversible changes in the aggregation state of colloidal structures in response to chemical, biological, and external stimuli. To construct adaptive organelle-like or cell-like reorganization characteristics, we present an advanced crosslinking strategy to fabricate clustered polymersomes as a platform based on host-guest interactions between azobenzene-containing polymersomes (Azo-Psomes) and a β-cyclodextrin-modified polymer (β-CD polymer) as a crosslinker. First, the reversible (dis)assembly of clustered Azo-Psomes is carried out by the alternating input of crosslinker and adamantane-PEG3000 as a decrosslinker. Moreover, cluster size dependence is demonstrated by environmental pH. These offer the controlled fabrication of various homogeneous and heterogeneous Azo-Psomes structures, including the size regulation and visualization of clustered AOs through a fluorescent enzymatic cascade reaction. Finally, a temperature-sensitive crosslinking agent with β-CD units can promote the coaggregation of Azo-Psomes mediated by temperature changes. Overall, these (co-)clustered Azo-Psomes and their successful transformation in AOs may provide new features for modelling biological systems for eukaryotic cells and systems biology.
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Affiliation(s)
- Kehu Zhang
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden 01069, Germany; Chair of Organic Chemistry of Polymers, Technische Universität Dresden, Dresden 01062, Germany
| | - Yang Zhou
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden 01069, Germany; Chair of Organic Chemistry of Polymers, Technische Universität Dresden, Dresden 01062, Germany
| | - Silvia Moreno
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden 01069, Germany.
| | - Simona Schwarz
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden 01069, Germany
| | - Susanne Boye
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden 01069, Germany
| | - Brigitte Voit
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden 01069, Germany; Chair of Organic Chemistry of Polymers, Technische Universität Dresden, Dresden 01062, Germany
| | - Dietmar Appelhans
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, Dresden 01069, Germany.
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5
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Umapathi R, Kumar K, Ghoreishian SM, Rani GM, Park SY, Huh YS, Venkatesu P. Effect of Imidazolium Nitrate Ionic Liquids on Conformational Changes of Poly( N-vinylcaprolactam). ACS OMEGA 2022; 7:39742-39749. [PMID: 36385857 PMCID: PMC9648054 DOI: 10.1021/acsomega.2c03650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
Detailed information about molecular interactions and conformational changes of polymeric components in the presence of ionic liquids (ILs) is essential for designing novel polymeric ionic liquid-based biomaterials. In biomaterials science and technology, thermoresponsive polymers (TRPs) are widely viewed as potential candidates for the fabrication of biorelated medical devices. Here, we synthesized thermoresponsive poly(N-vinyl-caprolactam) (PVCL) polymer and investigated the effects of imidazolium-based ILs (1-ethyl-3-methyl imidazolium nitrate and 1-butyl-3-methylimidazolium nitrate) with common anion and different cations on the phase transition behavior of PVCL aqueous solution. The impact of ILs on the phase transition behavior of PVCL was monitored by using UV-visible absorption spectra, steady-state fluorescence spectroscopy, thermal fluorescence spectroscopy, and temperature dependent dynamic light scattering. Results showed significant changes in the absorbance, molecular interactions, agglomeration, and coil to globule transition behaviors of PVCL in the presence of two ILs. PVCL aqueous solution showed significant conformational changes after the addition of ILs.
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Affiliation(s)
- Reddicherla Umapathi
- NanoBio
High-Tech Materials Research Center, Department of Biological Sciences
and Bioengineering, Inha University, Incheon 22212, Republic of Korea
| | - Krishan Kumar
- NanoBio
High-Tech Materials Research Center, Department of Biological Sciences
and Bioengineering, Inha University, Incheon 22212, Republic of Korea
- Department
of Chemistry, University of Delhi, Delhi 110 007, India
| | - Seyed Majid Ghoreishian
- NanoBio
High-Tech Materials Research Center, Department of Biological Sciences
and Bioengineering, Inha University, Incheon 22212, Republic of Korea
| | | | - So Young Park
- NanoBio
High-Tech Materials Research Center, Department of Biological Sciences
and Bioengineering, Inha University, Incheon 22212, Republic of Korea
| | - Yun Suk Huh
- NanoBio
High-Tech Materials Research Center, Department of Biological Sciences
and Bioengineering, Inha University, Incheon 22212, Republic of Korea
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6
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Liu YX, Zhong H, Li XR, Bao ZL, Cheng ZP, Zhang YJ, Li CX. Fabrication of attapulgite-based dual responsive composite hydrogel and its efficient adsorption for methyl violet. ENVIRONMENTAL TECHNOLOGY 2022; 43:1480-1492. [PMID: 33070707 DOI: 10.1080/09593330.2020.1838623] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 10/11/2020] [Indexed: 06/11/2023]
Abstract
In this work, attapulgite (ATP)-based dual sensitive poly (N-isopropylacrylamide-co-acrylic acid) composite hydrogel, P(NIPAM-co-AA)/ATP, was prepared by free radical polymerization. The prepared composite hydrogel was characterized via methods of scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), zeta potential analysis and Brunauer, Emmett, and Teller (BET) etc. The composite hydrogel showed pH and temperature sensitive behaviour, with lower critical solution temperature (LCST) of 35°C and highest swelling occurred at pH 8.0. The adsorption of methyl violet (MV) can be controlled by the hydrogel responsiveness, and 95.78% of MV can be removed at pH 8.0 and 35°C. The addition of a small amount of ATP (3 Wt%) can improve the swelling ratio and adsorption capacity. Kinetic analysis demonstrated that the experimental data were best fitted to the pseudo-second order model. Isotherm analysis showed that the equilibrium data followed Langmuir model with the adsorption capacity of 168.35 mg g-1. In addition, the composite hydrogel has high adsorption selectivity for cationic dyes, and MV-loaded hydrogel is easy to regenerate, which can be used for successive adsorption cycles. These results demonstrate that the composite hydrogel has potential application in dye wastewater treatment.
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Affiliation(s)
- Yi-Xin Liu
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, People's Republic of China
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry & Chemical Engineering, Huaiyin Normal University, Huaian, People's Republic of China
| | - Hui Zhong
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, People's Republic of China
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry & Chemical Engineering, Huaiyin Normal University, Huaian, People's Republic of China
| | - Xiao-Rong Li
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry & Chemical Engineering, Huaiyin Normal University, Huaian, People's Republic of China
| | - Zhuan-Li Bao
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry & Chemical Engineering, Huaiyin Normal University, Huaian, People's Republic of China
| | - Zhi-Peng Cheng
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry & Chemical Engineering, Huaiyin Normal University, Huaian, People's Republic of China
| | - Yu-Jie Zhang
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry & Chemical Engineering, Huaiyin Normal University, Huaian, People's Republic of China
| | - Chun-Xiang Li
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, People's Republic of China
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7
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Lin X, Kong M, Wu N, Gu Y, Qiu X, Chen X, Li Z, Feng W, Li F. Measurement of Temperature Distribution at the Nanoscale with Luminescent Probes Based on Lanthanide Nanoparticles and Quantum Dots. ACS APPLIED MATERIALS & INTERFACES 2020; 12:52393-52401. [PMID: 33170616 DOI: 10.1021/acsami.0c15697] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
It is very challenging to probe the temperature in a nanoscale because of the lack of detection technique. Temperature-sensitive luminescent probes at a nanoscale provide the possibility to solve this problem. Herein, we fabricated a model, which combined two kinds of temperature sensitive nanoprobes and gold nanoparticle heater within mesoporous silica nanoparticles. Upconverting nanoparticles and quantum dots located at different positions inside 110 nm nanoparticles reported different temperatures when the gold nanoparticles generated heat by 532 nm laser irradiation. The temperature difference between two probes with an average distance of 55 nm can reach about 30 °C. Our results prove that the temperature distribution at a nanoscale can be measured, and it will be noteworthy if a nano-heater is applied.
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Affiliation(s)
- Xue Lin
- Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, 2005 Songhu Road, Shanghai 200438, P.R. China
| | - Mengya Kong
- Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, 2005 Songhu Road, Shanghai 200438, P.R. China
| | - Na Wu
- Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, 2005 Songhu Road, Shanghai 200438, P.R. China
| | - Yuyang Gu
- Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, 2005 Songhu Road, Shanghai 200438, P.R. China
| | - Xiaochen Qiu
- Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, 2005 Songhu Road, Shanghai 200438, P.R. China
| | - Xinyu Chen
- Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, 2005 Songhu Road, Shanghai 200438, P.R. China
| | - Zhanxian Li
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P.R. China
| | - Wei Feng
- Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, 2005 Songhu Road, Shanghai 200438, P.R. China
| | - Fuyou Li
- Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, 2005 Songhu Road, Shanghai 200438, P.R. China
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Yin F, Behra JS, Beija M, Brûlet A, Fitremann J, Payré B, Gineste S, Destarac M, Lauth-de Viguerie N, Marty JD. Effect of the microstructure of n-butyl acrylate/N-isopropylacrylamide copolymers on their thermo-responsiveness, self-organization and gel properties in water. J Colloid Interface Sci 2020; 578:685-697. [PMID: 32559484 DOI: 10.1016/j.jcis.2020.06.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/30/2020] [Accepted: 06/01/2020] [Indexed: 11/28/2022]
Abstract
HYPOTHESIS Polymer composition, microstructure, molar mass, architecture… critically affect the properties of thermoresponsive polymers in aqueous media. EXPERIMENTS The behaviour of n-isopropylacrylamide and n-butyl acrylate-based copolymers of variable composition and structure (statistical, diblock or triblock) was studied in solution at different temperatures and concentrations with turbidimetry measurements, differential scanning calorimetry, electronic microscopy, rheology and scattering experiments. FINDINGS This study illustrates how it is possible through chemical engineering of the microstructure of amphiphilic thermoresponsive polymers to modulate significantly the self-assembly, morphological and mechanical properties of these materials in aqueous media. Statistical structures induced a strong decrease of cloud point temperature compared to block structures with similar composition. Moreover, block structures lead below the transition temperature to the formation of colloidal structures. Above the transition temperature, the formation of colloidal aggregates is observed at low concentrations, and at higher concentrations the formation of gels. Neutron scattering and light scattering measurements show that for a given composition diblock structures lead to smaller colloids and mesoglobules than their triblock counterparts. Moreover, diblock structures, compared to triblock analogs, allow the formation of gels that do not demix with time (no synaeresis) but that are softer than triblock gels.
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Affiliation(s)
- Fang Yin
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France
| | - Juliette S Behra
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France
| | - Mariana Beija
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France
| | - Annie Brûlet
- Université Paris-Saclay, CNRS, CEA, Laboratoire Léon Brillouin, CEA Saclay, F-91191 GIF/Yvette, France
| | - Juliette Fitremann
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France
| | - Bruno Payré
- CMEAB, IFR-BMT, Université de Toulouse, 133 route de Narbonne, 31062 Toulouse, France
| | - Stéphane Gineste
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France
| | - Mathias Destarac
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France
| | - Nancy Lauth-de Viguerie
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France.
| | - Jean-Daniel Marty
- IMRCP, UMR 5623, CNRS, Université de Toulouse, 118 route de Narbonne, F-31062 Toulouse, France.
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9
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Joshi SY, Deshmukh SA. A review of advancements in coarse-grained molecular dynamics simulations. MOLECULAR SIMULATION 2020. [DOI: 10.1080/08927022.2020.1828583] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Soumil Y. Joshi
- Department of Chemical Engineering, Virginia Tech, Blacksburg, VA, USA
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11
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Kisiel A, Kałuża D, Paterczyk B, Maksymiuk K, Michalska A. Quantifying plasticizer leakage from ion-selective membranes – a nanosponge approach. Analyst 2020; 145:2966-2974. [DOI: 10.1039/c9an02621e] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The spontaneous process of release of plasticizers from membranes typically used in ion-selective sensors is an effect which limits the lifetime of sensors and comes with a risk of safety hazards.
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Affiliation(s)
- Anna Kisiel
- Faculty of Chemistry
- University of Warsaw
- 02-093 Warsaw
- Poland
| | - Dawid Kałuża
- Faculty of Chemistry
- University of Warsaw
- 02-093 Warsaw
- Poland
| | - Bohdan Paterczyk
- Laboratory of Electron and Confocal Microscopy
- Faculty of Biology
- University of Warsaw
- 02-096 Warsaw
- Poland
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12
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Qin Y, Wang J, Wang F, Shen L, Zhou H, Sun H, Hao K, Song L, Zhou Z, Zhang C, Wu Y, Yang J. Purification and Characterization of a Secretory Alkaline Metalloprotease with Highly Potent Antiviral Activity from Serratia marcescens Strain S3. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:3168-3178. [PMID: 30799619 DOI: 10.1021/acs.jafc.8b06909] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
In this study we report a secretory protein that was purified from Serratia marcescens strain S3 isolated from soil from the tobacco rhizosphere. Subsequent mass spectrometry and annotation characterized the protein as secretory alkaline metalloprotease (SAMP). SAMP plays a crucial role in inhibiting Tobacco mosaic virus (TMV). Transmission electron microscopy (TEM), dynamic light scattering (DLS), confocal microscopy, and microscale thermophoresis (MST) were employed to investigate the anti-TMV mechanism of SAMP. Our results demonstrated that SAMP, as a hydrolytic metal protease, combined and hydrolyzed TMV coat proteins to destroy the virus particles. This study is the first to investigate the antiviral effects of a S. marcescens metalloprotease, and our finding suggests that S. marcescens-S3 may be agronomically useful as a disease-controlling factor active against Tobacco mosaic virus.
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Affiliation(s)
- Yuanxia Qin
- College of Plant Protection , Shenyang Agricultural University , Shenyang 110866 , P. R. China
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management , Tobacco Research Institute of Chinese Academy of Agricultural Sciences , Qingdao 266101 , P. R. China
| | - Jie Wang
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management , Tobacco Research Institute of Chinese Academy of Agricultural Sciences , Qingdao 266101 , P. R. China
| | - Fenglong Wang
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management , Tobacco Research Institute of Chinese Academy of Agricultural Sciences , Qingdao 266101 , P. R. China
| | - Lili Shen
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management , Tobacco Research Institute of Chinese Academy of Agricultural Sciences , Qingdao 266101 , P. R. China
| | - Haixiang Zhou
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management , Tobacco Research Institute of Chinese Academy of Agricultural Sciences , Qingdao 266101 , P. R. China
| | - Hangjun Sun
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management , Tobacco Research Institute of Chinese Academy of Agricultural Sciences , Qingdao 266101 , P. R. China
| | - Kaiqiang Hao
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management , Tobacco Research Institute of Chinese Academy of Agricultural Sciences , Qingdao 266101 , P. R. China
| | - Liyun Song
- College of Plant Protection , Shenyang Agricultural University , Shenyang 110866 , P. R. China
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management , Tobacco Research Institute of Chinese Academy of Agricultural Sciences , Qingdao 266101 , P. R. China
| | - Zhicheng Zhou
- Hunan Tobacco Science Institute , Changsha 410004 , P. R. China
| | - Chaoqun Zhang
- Jiangxi Institute of Tobacco Leaf Science , Nanchang 330025 , P. R. China
| | - Yuanhua Wu
- College of Plant Protection , Shenyang Agricultural University , Shenyang 110866 , P. R. China
| | - Jinguang Yang
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management , Tobacco Research Institute of Chinese Academy of Agricultural Sciences , Qingdao 266101 , P. R. China
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