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Mohamad Ali B, Yu Z, Tao Z, Zhang T, Wang L, He C, Zhang H, Wang J. TEMPO-Grafted Polystyrene/Polymethacrylate Organosiloxane Janus Nanohybrids as Efficient Pickering Interfacial Catalyst for Selective Aerobic Oxidation of Cinnamyl Alcohol. ACS Appl Mater Interfaces 2024. [PMID: 38624155 DOI: 10.1021/acsami.4c00645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
The novel 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) groups immobilized on functional polymers or nanoparticles emerged as potential Pickering interfacial catalysts (PICs) for effective catalysis in biphasic systems. In this study, a snowman-shaped Janus-structured polymer with TEMPO-anchored nanohybrid particles (SM-JPP-TEMPO) was prepared and employed as a potential PIC in the Anelli-Montanari system for the selective oxidation of alcohol. The amphiphilic character of SM-JPP-TEMPO particles plays a dual role as an emulsifier and catalyst in the Pickering emulsion. As a result, it enables smaller droplets (102 μm) at the water-in-oil (W/O) interface and reduces the interfacial tension from 26.58 to 17.38 mN/m, which improves the stability of the Pickering emulsion system. This constructed Pickering emulsion microreactor offers a larger interface contact area and shortens the mass transfer distance of the substrate of cinnamyl alcohol, which significantly enhances the catalytic conversion at the Anelli-Montanari oxidation system, thus achieving remarkable conversion efficiency of (92.3%) with excellent selectivity (99%) in static (stirring-free) condition. It was found that the Janus nanohybrid catalyst (SM-JPP-TEMPO) enhanced 1.29-fold catalytic efficiency compared to the TEMPO grafted spherical polystyrene nanoparticle (PS-NPs-TEMPO) catalyst (72%). Moreover, after seven consecutive cycles, the Janus nanocatalyst (SM-JPP-TEMPO) maintained the conversion significantly. Hence, these results collectively highlight that the amphiphilic SM-JPP-TEMPO catalyst provides an efficient and eco-friendly strategy for the intensification of liquid-liquid biphasic reaction systems for potential applications in industries.
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Affiliation(s)
- Badusha Mohamad Ali
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Ziqi Yu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Zhengyuan Tao
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Tangxin Zhang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Lei Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Chenbing He
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Hao Zhang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Jianli Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, PR China
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Son SH, Jung YJ, Koo HY, Choi WS. Amphiphilic Magnetic Particles Dispersed in Water and Oil for the Removal of Hydrophilic and Hydrophobic Microplastics. ACS Appl Mater Interfaces 2024. [PMID: 38597322 DOI: 10.1021/acsami.3c19398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
The study explores the synthesis and versatile properties of amphiphilic magnetic particles (AMPs) achieved through sequential coatings. Modulating the hydrophobic content in the synthesis process allows for the formation of hydrophilic, amphiphilic, and hydrophobic magnetic particles, with stable AMPs synthesis achieved at a ratio of hydrophilic to hydrophobic portions of approximately 71 to 29%. These AMPs exhibited outstanding dispersion in both oil and water within an oil/water mixture. Polyethylenimine in the AMP primarily enhances the removal of hydrophilic microparticles and facilitates dispersion in water. On the other hand, octadecylamine is specifically designed for the effective elimination of hydrophobic microparticles and their dispersion in oil. AMPs demonstrated effective removal capabilities for both hydrophilic and hydrophobic microparticles in water as well as hydrophobic microparticles in 100% oil. Our approach is also suited for eliminating hydrophobic microparticles dispersed in small quantities of oil floating on large bodies of water in real-world situations.
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Affiliation(s)
- Su Hyeon Son
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseodaero, Yuseong-gu, Daejeon 305-719, Republic of Korea
| | - Young Ju Jung
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseodaero, Yuseong-gu, Daejeon 305-719, Republic of Korea
| | - Hye Young Koo
- Functional Composite Materials Research Center, Korea Institute of Science and Technology (KIST), Jeonbuk Institute of Advanced Composite Materials, Wanju-gun, Jeollabuk-do 55324, Republic of Korea
| | - Won San Choi
- Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseodaero, Yuseong-gu, Daejeon 305-719, Republic of Korea
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Lu A, Li S. Polysaccharides as a Hydrophilic Building Block of Amphiphilic Block Copolymers for the Conception of Nanocarriers. Pharmaceutics 2024; 16:467. [PMID: 38675130 PMCID: PMC11054713 DOI: 10.3390/pharmaceutics16040467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/19/2024] [Accepted: 03/21/2024] [Indexed: 04/28/2024] Open
Abstract
Polysaccharides are gaining increasing attention for their relevance in the production of sustainable materials. In the domain of biomaterials, polysaccharides play an important role as hydrophilic components in the design of amphiphilic block copolymers for the development of drug delivery systems, in particular nanocarriers due to their outstanding biocompatibility, biodegradability, and structural versatility. The presence of a reducing end in polysaccharide chains allows for the synthesis of polysaccharide-based block copolymers. Compared with polysaccharide-based graft copolymers, the structure of block copolymers can be more precisely controlled. In this review, the synthesis methods of polysaccharide-based amphiphilic block copolymers are discussed in detail, taking into consideration the structural characteristics of polysaccharides. Various synthetic approaches, including reductive amination, oxime ligation, and other chain-end modification reactions, are explored. This review also focuses on the advantages of polysaccharides as hydrophilic blocks in polymeric nanocarriers. The structure and unique properties of different polysaccharides such as cellulose, hyaluronic acid, chitosan, alginate, and dextran are described along with examples of their applications as hydrophilic segments in the synthesis of amphiphilic copolymers to construct nanocarriers for sustained drug delivery.
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Affiliation(s)
- Aijing Lu
- NMPA Key Laboratory for Quality Research and Control of Tissue Regenerative Biomaterial & NMPA Research Base of Regulatory Science for Medical Devices, Institute of Regulatory Science for Medical Devices, Sichuan University, Chengdu 610064, China;
| | - Suming Li
- Institut Européen des Membranes, UMR CNRS 5635, Université de Montpellier, 34095 Montpellier, France
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Xie QY, Chen Y, Li CJ, Zhang JB, Cao XJ, Lu J. Ionizable copolymer functionalized magnetic nanocomposite as an adsorbent for boosting the extraction selectivity of aristolochic acids. J Food Drug Anal 2024; 32:65-78. [PMID: 38526591 PMCID: PMC10962652 DOI: 10.38212/2224-6614.3493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 12/19/2023] [Indexed: 03/26/2024] Open
Abstract
Aristolochic acid nephropathy (AAN) has drawn increasing public attention. Organic anion transporters (OATs) are considered to be responsible for mediating nephrotoxicity of aristolochic acids (AAs), as AAs are typical OAT1 substrates that exhibit anionic properties and contain one hydrophobic domain. Inspired by the OAT1 three-dimensional structure or substrate/protein interactions involved in transport, we designed a magnetic polymeric hybrid, mimicking the effect of basic and aromatic residues of OAT1, for efficient enriching aristolochic acid I (AA I) and aristolochic acid II (AA II) in Traditional Chinese patent medicines (TCPM). N, N-dimethylaminopropyl acrylamide (DMAPAm) was used as a cationic monomer and copolymerized with divinylbenzene (DVB) onto the surface of monodisperse magnetic nanoparticles (denoted as MNs@SiO2T-DvbDam). The magnetic polymer hybrid demonstrated high selectivity and capacity for AAs, which was mainly attributed to (1) electrostatic interactions from the cationic or basic moiety of DMAPAm and (2) the hydrophobic and π-π stacking interactions from the aromatic ring of DVB. Additionally, the surface of the hybrid exhibited amphiphilic property according to the ionization of DMAPAm, thus improving the compatibility of the adsorbent with the aqueous sample matrix. This strategy was proven to be robust in the analysis of real drug samples, which was characterized by a good linearity, high recovery and satisfactory reusability. This work confirmed that the proposed tool could be a promising candidate for enhancing the extraction selectivity of AAs in Traditional Chinese medicines (TCM).
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Affiliation(s)
- Qi-Yue Xie
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR
China
| | - Yang Chen
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR
China
| | - Chang-Jun Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR
China
| | - Jia-Bin Zhang
- Suzhou CretBiotech Ltd., 99 Jinji Lake Avenue, Suzhou, 215123 PR
China
| | - Xiu-Jun Cao
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR
China
| | - Jun Lu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR
China
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Eftekhari-Sis B, Amirpour N, Naderahmadian A, Zirak M, Janeta M, Mahmoudi G. Amphiphilic Azo-Functionalized Polyhedral Oligomeric Silsesquioxane; Synthesis and Photo-Switched Efficient Phase Transfer via Host-Guest Encapsulation. Chempluschem 2023:e202300628. [PMID: 38153180 DOI: 10.1002/cplu.202300628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/07/2023] [Accepted: 12/28/2023] [Indexed: 12/29/2023]
Abstract
A new amphiphilic azo-functionalized polyhedral oligomeric silsesquioxane (POSS) derivative was synthesized by functionalizing octa(3-aminopropyl)silsesquioxane (OAS-POSS) with 4-((4-(dodecyloxy)phenyl)diazenyl)benzoic acid, affording a hydrophilic amino POSS head and hydrophobic dodecyl tail with a diphenyl-azo connector. Prepared amphiphilic azo-functionalized POSS (azo-POSS) exhibited high ability for encapsulation and transferring cationic dyes into the organic phase by vigorously mixing with aqueous solutions of each dye. The photo-controlled encapsulating properties of the synthesized phase transfer reagent was studied using cationic dyes, such as methylene blue (MB), crystal violet (CV) and thymol blue in acidic conditions. Results showed more than 95 % encapsulation of MB. However, no considerable encapsulation was shown in the case of anionic dyes such as eriochrome black T (EBT) and thymol blue in alkaline solutions. By trans/cis isomerization of the azo moiety of the phase transfer reagent by UV irradiation (365 nm), the amount of dye encapsulation was decreased, which could be attributed to the formation of cis isomer that led to the folding of the dodecyl alkyl tail on the POSS moiety, and therefore prevent to lay the 3-aminopropyl moieties of POSS head to the water/DCM interface to adsorb and encapsulate MB molecules.
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Affiliation(s)
- Bagher Eftekhari-Sis
- Department of Chemistry, University of Maragheh, Golshahr, P.O.Box, 55181-83111, Maragheh, Iran
| | - Nasim Amirpour
- Department of Chemistry, University of Maragheh, Golshahr, P.O.Box, 55181-83111, Maragheh, Iran
| | - Aylar Naderahmadian
- Department of Chemistry, University of Maragheh, Golshahr, P.O.Box, 55181-83111, Maragheh, Iran
| | - Maryam Zirak
- Department of Chemistry, Payame Noor University, Tehran, Iran
| | - Mateusz Janeta
- Faculty of Chemistry, University of Wrocław F., Joliot-Curie 14, 50-383, Wrocław
| | - Ghodrat Mahmoudi
- Department of Chemistry, University of Maragheh, Golshahr, P.O.Box, 55181-83111, Maragheh, Iran
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Iqbal S, Zaman M, Waqar MA, Sarwar HS, Jamshaid M. Vesicular approach of cubosomes, its components, preparation techniques, evaluation and their appraisal for targeting cancer cells. J Liposome Res 2023:1-17. [PMID: 37873797 DOI: 10.1080/08982104.2023.2272643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Cancer has been characterized by abnormal and uncontrolled proliferation of cells. Majority of drugs given through chemotherapy produce unwanted and adverse effects of chemotherapeutic agents to the other healthy cells and tissues of body. Various nanocarriers have now been considered for treatment of cancer. Among various nanocarriers, cubosomes are the nano sized dispersions that have drawn interest of researchers recently. Cubosomes are defined as dispersions of colloidal nature containing cubic crystalline liquid formations in aqueous medium in presence of suitable surfactant molecules. The unique capacity to encapsulate lipophilic, hydrophilic, and amphiphilic compounds inside their structure distinguishes them among others. Top- down method and hydrotrope method are most often employed methods for cubosomes preparation. Cubosomes can be characterized by Polarized light microscopy Photon correlation spectroscopy X-ray scattering (SAXS), Transmission electron microscopy and various stability studies. Cubic lipid nanoparticles have a very stable cubic structure that enables slower dissociation rate, increased retention and site-specific delivery of drugs. Cubosomes containing extracts of cornelian cherry for boosting anti-cancerous effects in cancer of colorectal cells by preventing against GIT destruction. When applied for skin cancer, cubosomes have shown to be having enhanced permeation of the drug. In liver cancer, increased bioavailability of drug was observed via cubosomes. This current review elaborates the advancement of cubosomes and their effective role in the treatment of cancer. This review aims to describe vesicular approach of cubosomes, its composition and method of preparation, characterization tests as well as elaborates various applications of cubosomes in cancer.
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Affiliation(s)
- Sehrish Iqbal
- Faculty of Pharmaceutical Sciences, University of Central Punjab, Lahore, Pakistan
| | - Muhammad Zaman
- Faculty of Pharmaceutical Sciences, University of Central Punjab, Lahore, Pakistan
| | - Muhammad Ahsan Waqar
- Faculty of Pharmaceutical Sciences, University of Central Punjab, Lahore, Pakistan
| | - Hafiz Shoaib Sarwar
- Faculty of Pharmaceutical Sciences, University of Central Punjab, Lahore, Pakistan
| | - Muhammad Jamshaid
- Faculty of Pharmaceutical Sciences, University of Central Punjab, Lahore, Pakistan
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Viola M, Migliorini C, Ziarelli F, Viel S, Cencetti C, Di Risola D, Mosca L, Masuelli L, Matricardi P, Di Meo C. Polyacrylate-Cholesterol Amphiphilic Derivative: Formulation Development and Scale-up for Health Care Applications. J Funct Biomater 2023; 14:482. [PMID: 37754896 PMCID: PMC10532428 DOI: 10.3390/jfb14090482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 09/12/2023] [Accepted: 09/15/2023] [Indexed: 09/28/2023] Open
Abstract
The novel amphiphilic polyacrylate grafted with cholesterol moieties, PAAbCH, previously synthesized, was deeply characterized and investigated in the lab and on a pre-industrial scale. Solid-state NMR analysis confirmed the polymer structure, and several water-based pharmaceutical and cosmetic products were developed. In particular, stable oil/water emulsions with vegetable oils, squalene, and ceramides were prepared, as well as hydrophilic medicated films loaded with diclofenac, providing a prolonged drug release. PAAbCH also formed polyelectrolyte hydrogel complexes with chitosan, both at the macro- and nano-scale. The results demonstrate that this polymer has promising potential as an innovative excipient, acting as a solubility enhancer, viscosity enhancer, and emulsifying agent with an easy scale-up transfer process.
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Affiliation(s)
- Marco Viola
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, 00185 Rome, Italy; (M.V.); (C.M.); (P.M.)
| | - Claudia Migliorini
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, 00185 Rome, Italy; (M.V.); (C.M.); (P.M.)
| | - Fabio Ziarelli
- Aix-Marseille Université, CNRS, Centrale Méditerranée, Fédération Sciences Chimiques Marseille, 13013 Marseille, France;
| | - Stéphane Viel
- Aix-Marseille Université, CNRS, Institut de Chimie Radicalaire, 13013 Marseille, France;
- Institut Universitaire de France, 75005 Paris, France
| | | | - Daniel Di Risola
- Department of Biochemical Sciences “A. Rossi Fanelli”, Sapienza University of Rome, 00185 Rome, Italy; (D.D.R.); (L.M.)
| | - Luciana Mosca
- Department of Biochemical Sciences “A. Rossi Fanelli”, Sapienza University of Rome, 00185 Rome, Italy; (D.D.R.); (L.M.)
| | - Laura Masuelli
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy;
| | - Pietro Matricardi
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, 00185 Rome, Italy; (M.V.); (C.M.); (P.M.)
| | - Chiara Di Meo
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, 00185 Rome, Italy; (M.V.); (C.M.); (P.M.)
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Kordkatooli E, Bacha K, Villaume S, Dorey S, Monboisse JC, Brassart-Pasco S, Mbakidi JP, Bouquillon S. L-Rhamnose and Phenolic Esters-Based Monocatenar and Bolaform Amphiphiles: Eco-Compatible Synthesis and Determination of Their Antioxidant, Eliciting and Cytotoxic Properties. Molecules 2023; 28:5154. [PMID: 37446816 DOI: 10.3390/molecules28135154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/13/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
Symmetrical and dissymmetrical bolaforms were prepared with good to high yields from unsaturated L-rhamnosides and phenolic esters (ferulic, phloretic, coumaric, sinapic and caffeic) using two eco-compatible synthetic strategies involving glycosylation, enzymatic synthesis and cross-metathesis under microwave activation. The plant-eliciting activity of these new compounds was investigated in Arabidopsis model plants. We found that the monocatenar rhamnosides and bolaforms activate the plant immune system with a response depending on the carbon chain length and the nature of the hydrophilic heads. Their respective antioxidant activities were also evaluated, as well as their cytotoxic properties on dermal cells for cosmetic uses. We showed that phenolic ester-based compounds present good antioxidant activities and that their cytotoxicity is low. These properties are also dependent on the carbon chains used.
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Affiliation(s)
- Emad Kordkatooli
- Molecular Chemistry Reims Institute UMR CNRS 7312, Reims Champagne-Ardenne University, Boîte n° 44, B.P. 1039, 51687 Reims, France
| | - Katia Bacha
- Molecular Chemistry Reims Institute UMR CNRS 7312, Reims Champagne-Ardenne University, Boîte n° 44, B.P. 1039, 51687 Reims, France
| | - Sandra Villaume
- RIBP-USC INRAE 1488, Université de Reims Champagne-Ardenne Reims, 51100 Reims, France
| | - Stephan Dorey
- RIBP-USC INRAE 1488, Université de Reims Champagne-Ardenne Reims, 51100 Reims, France
| | - Jean-Claude Monboisse
- Laboratoire de Biochimie Médicale et de Biologie Moléculaire, UMR CNRS/URCA 7369-Reims Champagne Ardenne University, UFR Médecine, 51 Rue Cognacq Jay, 51095 Reims, France
| | - Sylvie Brassart-Pasco
- Laboratoire de Biochimie Médicale et de Biologie Moléculaire, UMR CNRS/URCA 7369-Reims Champagne Ardenne University, UFR Médecine, 51 Rue Cognacq Jay, 51095 Reims, France
| | - Jean-Pierre Mbakidi
- Molecular Chemistry Reims Institute UMR CNRS 7312, Reims Champagne-Ardenne University, Boîte n° 44, B.P. 1039, 51687 Reims, France
| | - Sandrine Bouquillon
- Molecular Chemistry Reims Institute UMR CNRS 7312, Reims Champagne-Ardenne University, Boîte n° 44, B.P. 1039, 51687 Reims, France
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Hou X, Huang B, Zhou L, Liu S, Kong J, He C. An Amphiphilic Entangled Network Design Towards Ultratough Hydrogels. Adv Mater 2023:e2301532. [PMID: 37197803 DOI: 10.1002/adma.202301532] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 05/08/2023] [Indexed: 05/19/2023]
Abstract
Hydrogels find important roles in biomedicine, wearable electronics and soft robotics, but their mechanical properties are often unsatisfactory. Conventional tough hydrogel designs are based on hydrophilic networks with sacrificial bonds, while incorporation of hydrophobic polymers into hydrogels is less well understood. In this work, we demonstrate a hydrogel toughening strategy by introducing a hydrophobic polymer as reinforcement. Semicrystalline hydrophobic polymer chains are "woven" into a hydrophilic network via entropy-driven miscibility. In-situ formed sub-micrometer crystallites stiffen the network, while entanglements between hydrophobic polymer and hydrophilic network enable large deformation before failure. The hydrogels are stiff, tough and durable at high swelling ratios of 6-10, and the mechanical property are tunable. Moreover, they could effectively encapsulate both hydrophobic and hydrophilic molecules. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Xunan Hou
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117575, Singapore
| | - Binting Huang
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117575, Singapore
| | - Lili Zhou
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117575, Singapore
| | - Siqi Liu
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117575, Singapore
| | - Junhua Kong
- Institute of Materials Research and Engineering, Agency for Science Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis, Singapore, 138634, Singapore
| | - Chaobin He
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117575, Singapore
- Institute of Materials Research and Engineering, Agency for Science Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis, Singapore, 138634, Singapore
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10
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Cui Z, Jiao Y, Pu L, Chen J, Liu M, Tang JZ, Wang G. The Interaction Mechanism of Intramuscular Gene Delivery Materials with Cell Membranes. J Funct Biomater 2023; 14:jfb14040219. [PMID: 37103309 PMCID: PMC10144004 DOI: 10.3390/jfb14040219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/25/2023] [Accepted: 04/08/2023] [Indexed: 04/28/2023] Open
Abstract
It has been confirmed that skeletal muscle cells have the capability to receive foreign plasmid DNA (pDNA) and express functional proteins. This provides a promisingly applicable strategy for safe, convenient, and economical gene therapy. However, intramuscular pDNA delivery efficiency was not high enough for most therapeutic purposes. Some non-viral biomaterials, especially several amphiphilic triblock copolymers, have been shown to significantly improve intramuscular gene delivery efficiency, but the detailed process and mechanism are still not well understood. In this study, the molecular dynamics simulation method was applied to investigate the structure and energy changes of the material molecules, the cell membrane, and the DNA molecules at the atomic and molecular levels. From the results, the interaction process and mechanism of the material molecules with the cell membrane were revealed, and more importantly, the simulation results almost completely matched the previous experimental results. This study may help us design and optimize better intramuscular gene delivery materials for clinical applications.
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Affiliation(s)
- Zhanpeng Cui
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Yang Jiao
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Linyu Pu
- School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang 621010, China
| | - Jianlin Chen
- School of Laboratory Medicine, Chengdu Medical College, Chengdu 610500, China
| | - Ming Liu
- Department of Medical Oncology/Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - James Zhenggui Tang
- Research Institute of Healthcare Science, Faculty of Science & Engineering, University of Wolverhampton, Wolverhampton WV1 1SB, UK
| | - Gang Wang
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
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Moreno J, Zoghebi K, Salehi D, Kim L, Shoushtari SK, Tiwari RK, Parang K. Amphiphilic Cell-Penetrating Peptides Containing Arginine and Hydrophobic Residues as Protein Delivery Agents. Pharmaceuticals (Basel) 2023; 16:ph16030469. [PMID: 36986567 PMCID: PMC10053436 DOI: 10.3390/ph16030469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/18/2023] [Accepted: 03/21/2023] [Indexed: 03/30/2023] Open
Abstract
The entry of proteins through the cell membrane is challenging, thus limiting their use as potential therapeutics. Seven cell-penetrating peptides, designed in our laboratory, were evaluated for the delivery of proteins. Fmoc solid-phase peptide synthesis was utilized for the synthesis of seven cyclic or hybrid cyclic-linear amphiphilic peptides composed of hydrophobic (tryptophan (W) or 3,3-diphenylalanine (Dip) and positively-charged arginine (R) residues, such as [WR]4, [WR]9, [WWRR]4, [WWRR]5, [(RW)5K](RW)5, [R5K]W7, and [DipR]5. Confocal microscopy was used to screen the peptides as a protein delivery system of model cargo proteins, green and red fluorescein proteins (GFP and RFP). Based on the confocal microscopy results, [WR]9 and [DipR]5 were found to be more efficient among all the peptides and were selected for further studies. [WR]9 (1-10 µM) + protein (GFP and RFP) physical mixture did not show high cytotoxicity (>90% viability) in triple-negative breast cancer cells (MDA-MB-231) after 24 h, while [DipR]5 (1-10 µM) physical mixture with GFP exhibited more than 81% cell viability. Confocal microscopy images revealed internalization of GFP and RFP in MDA-MB-231 cells using [WR]9 (2-10 μM) and [DipR]5 (1-10 µM). Fluorescence-activated cell sorting (FACS) analysis indicated that the cellular uptake of GFP was concentration-dependent in the presence of [WR]9 in MDA-MB-231 cells after 3 h of incubation at 37 °C. The concentration-dependent uptake of GFP and RFP was also observed in the presence of [DipR5] in SK-OV-3 and MDA-MB-231 cells after 3 h of incubation at 37 °C. FACS analysis indicated that the cellular uptake of GFP in the presence of [WR]9 was partially decreased by methyl-β-cyclodextrin and nystatin as endocytosis inhibitors after 3 h of incubation in MDA-MB-231 cells, whereas nystatin and chlorpromazine as endocytosis inhibitors slightly reduced the uptake of GFP in the presence of [DipR]5 after 3 h of incubation in MDA-MB-231. [WR]9 was able to deliver therapeutically relevant proteins (Histone H2A) at different concentrations. These results provide insight into the use of amphiphilic cyclic peptides in the delivery of protein-related therapeutics.
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Affiliation(s)
- Jonathan Moreno
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA
| | - Khalid Zoghebi
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan 82826, Saudi Arabia
| | - David Salehi
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA
| | - Lois Kim
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA
| | - Sorour Khayyatnejad Shoushtari
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA
| | - Rakesh K Tiwari
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA
| | - Keykavous Parang
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA
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12
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Rehm K, Vollenweider V, Gu S, Friman VP, Kümmerli R, Wei Z, Bigler L. Chryseochelins-structural characterization of novel citrate-based siderophores produced by plant protecting Chryseobacterium spp. Metallomics 2023; 15:7040575. [PMID: 36792066 PMCID: PMC9989332 DOI: 10.1093/mtomcs/mfad008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 01/29/2023] [Indexed: 02/17/2023]
Abstract
Bacteria secrete siderophores whose function is to acquire iron. In recent years, the siderophores of several Chryseobacterium species were shown to promote the health and growth of various plants such as tomato or rice. However, the chemical nature of Chryseobacterium siderophores remained unexplored despite great interest. In this work, we present the purification and structure elucidation by nuclear magnetic resonance (NMR) spectroscopy and tandem mass spectrometry (MS/MS) of chryseochelin A, a novel citrate-based siderophore secreted by three Chryseobacterium strains involved in plant protection. It contains the unusual building blocks 3-hydroxycadaverine and fumaric acid. Furthermore, the unstable structural isomer chryseochelin B and its stable derivative containing fatty acid chains, named chryseochelin C, were identified by mass spectrometric methods. The latter two incorporate an unusual ester connectivity to the citrate moiety showing similarities to achromobactin from the plant pathogen Dickeya dadantii. Finally, we show that chryseochelin A acts in a concentration-dependent manner against the plant-pathogenic Ralstonia solanacearum strain by reducing its access to iron. Thus, our study provides valuable knowledge about the siderophores of Chryseobacterium strains, which have great potential in various applications.
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Affiliation(s)
- Karoline Rehm
- University of Zurich, Department of Chemistry, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Vera Vollenweider
- University of Zurich, Department of Quantitative Biomedicine, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Shaohua Gu
- Center for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China.,Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Ville-Petri Friman
- University of York, Department of Biology, Wentworth Way, York YO10 5DD, UK
| | - Rolf Kümmerli
- University of Zurich, Department of Quantitative Biomedicine, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Zhong Wei
- Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, National Engineering Research Center for Organic-based Fertilizers, Nanjing Agricultural University, Nanjing, PR China
| | - Laurent Bigler
- University of Zurich, Department of Chemistry, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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13
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Santos-Luna D, Sixto-López Y, Bravo-Alfaro D, Cano-Sarmiento C, García H, Correa-Basurto J. Design and simulation of a caprylic acid enzymatically modified phosphatidylcholine micelle using a coarse-grained molecular dynamics simulations approach. J Biomol Struct Dyn 2023; 41:13902-13913. [PMID: 36826442 DOI: 10.1080/07391102.2023.2180434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 02/08/2023] [Indexed: 02/25/2023]
Abstract
Computationally simulated micelle models provide useful structural information on the molecular and biological sciences. One strategy to study the self-aggregation process of surfactant molecules that make up a micelle is through molecular dynamics (MD) simulations. In this study, a theoretical approach with a coarse-grained MD simulation (CG-MD) was employed to evaluate the critical micellar concentration (CMC), the micellization process, building a tridimensional (3D) model system of a micelle using data from the experimentally enzymatically modified phospholipids (PL) by phospholipase A1 (PA1). This required enzymatic interesterification of soybean phosphatidylcholine (PC) with caprylic acid, along with purification and characterization by chromatographic techniques to measure the esterified fatty acids and the corresponding PL composition. The number of molecules used in the CG-MD simulation system was determined from the experimental CMC data which was 0.025%. The molecular composition of the system is: 1 C 18:2, 2 C 8:0/8:0, 3 C 8:0/18:3n-9, 4 C 8:0/18:0, 5 C8:0/18:2n-6, 6 C8:0/18:1n-9, and 7 C 8:0/16:0. According to our theoretical results, the micelle model is structurally stable with an average Rg of 3.64 ± 0.10 Å, and might have an elliptical form with a radius of 24.6 Å. Regarding CMC value there was a relationship between the experimental data of the modified PLs and the theoretical analysis by GC-MD, which suggest that the enzymatic modification of PLs does not affect their self-aggregation properties. Finally, the micellar system obtained in the current research can be used as a simple and useful model to design optimal biocompatible nanoemulsions as possible vehicles for bioactive small molecules.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Dalia Santos-Luna
- Unidad de Investigación y Desarrollo de Alimentos, Tecnológico Nacional de México/IT de Veracruz, Veracruz, México
| | - Yudibeth Sixto-López
- Departamento de Química Farmacéutica y Orgánica, Facultad de Farmacia, Universidad de Granada, Campus de Cartuja, Granada, Spain
- Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotecnológica (Laboratory for the Design and Development of New Drugs and Biotechnological Innovation) SEPI-ESM, Instituto Politécnico Nacional, México, Mexico City, Mexico
| | - Diego Bravo-Alfaro
- Unidad de Investigación y Desarrollo de Alimentos, Tecnológico Nacional de México/IT de Veracruz, Veracruz, México
| | - Cynthia Cano-Sarmiento
- CONACyT-Unidad de Investigación y Desarrollo de Alimentos, Tecnologico Nacional de México/IT de Veracruz, Veracruz, México
| | - Hugo García
- Unidad de Investigación y Desarrollo de Alimentos, Tecnológico Nacional de México/IT de Veracruz, Veracruz, México
| | - José Correa-Basurto
- Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotecnológica (Laboratory for the Design and Development of New Drugs and Biotechnological Innovation) SEPI-ESM, Instituto Politécnico Nacional, México, Mexico City, Mexico
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14
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Aaghaz S, Sharma K, Maurya IK, Rudramurthy SM, Singh S, Kumar V, Tikoo K, Jain R. Synthetic amino acids-based short amphipathic peptides exhibit antifungal activity by targeting cell membrane disruption. Drug Dev Res 2023; 84:514-526. [PMID: 36757096 DOI: 10.1002/ddr.22041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/21/2022] [Accepted: 01/22/2023] [Indexed: 02/10/2023]
Abstract
Availability of a limited number of antifungal drugs created a necessity to develop new antifungals with distinct mode of action. Investigation on a new series of peptides led us to identify Boc-His-Trp-His[1-(4-tert-butylphenyl)] (10g) as the most promising inhibitor exhibiting IC50 value of 4.4 µg/mL against Cryptococcus neoformans. Analog 10g exhibit high selectivity to fungal cells and was nonhemolytic and noncytotoxic at its minimum inhibitory concentration. 10g produced fungicidal effect on growing cryptococcal cells and displayed synergistic effect with amphotericin B. Overall cationic character of 10g resulted in interaction with negatively charged fungal membrane while hydrophobicity enhanced penetration inside the cryptococcal cells causing hole(s) formation and disruption to the membrane as evident by the scanning electron microscopy, transmission electron microscopy, and confocal laser scanning microscopy analyses. Flow cytometric investigation revealed rapid death of fungal cells by apopotic pathway.
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Affiliation(s)
- Shams Aaghaz
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sahibzada Ajit Singh Nagar, Punjab, India
| | - Komal Sharma
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sahibzada Ajit Singh Nagar, Punjab, India
| | - Indresh K Maurya
- Center of Infectious Diseases, National Institute of Pharmaceutical Education and Research, Sahibzada Ajit Singh Nagar, Punjab, India
| | - Shivaprakash M Rudramurthy
- Department of Medical Microbiology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Shreya Singh
- Department of Medical Microbiology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Vinod Kumar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sahibzada Ajit Singh Nagar, Punjab, India
| | - Kulbhushan Tikoo
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Sahibzada Ajit Singh Nagar, Punjab, India
| | - Rahul Jain
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sahibzada Ajit Singh Nagar, Punjab, India.,Center of Infectious Diseases, National Institute of Pharmaceutical Education and Research, Sahibzada Ajit Singh Nagar, Punjab, India
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15
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Minoi N, Ishiwari F, Murotani K, Nishikubo R, Fukushima T, Saeki A. Surface Passivation of Lead Halide Perovskite Solar Cells by a Bifacial Donor-π-Donor Molecule. ACS Appl Mater Interfaces 2023; 15:6708-6715. [PMID: 36696169 DOI: 10.1021/acsami.2c18446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Surface passivation is key to the power conversion efficiency (PCE) of organic-inorganic lead halide perovskite solar cells (PSCs). Herein, we report a novel molecular concept of a C2-symmetric syn-type bifacial donor-π-donor (D-π-D) passivation molecule (a racemic mixture of enantiomers) with hydrophobic phenyls and hydrophilic tetraethylene glycol-substituted phenyls on each face of the indeno-[1,2-b]fluorene π-core. In addition to this bifacial amphiphilic π-core unit, triphenylamine, a well-established passivation donor, effectively passivated the PSC surface, facilitated hole transfer, and increased the maximum PCE from 18.43 to 19.74%. Another notable effect is the removal of remnant PbI2 and the change in the perovskite orientation on the surface by the syn-type molecule. In contrast, the anti-type isomer degraded its long-term stability. We characterized the electrostatic and electronic properties of these molecules and highlighted the advantage of molecular strategy based on a bifacial structure and its stereochemistry.
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Affiliation(s)
- Nanaki Minoi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Fumitaka Ishiwari
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Frontier Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, 1-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kazuharu Murotani
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Ryosuke Nishikubo
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, 1-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takanori Fukushima
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Akinori Saeki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, 1-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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16
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Huang W, Liu Q, Zhang X, Chen Z, Zheng B, Wu D. Amphiphilically Modified Porous Polymeric Nanosandwich-Based Membranes for Rapid and Efficient Water Treatment. Small 2023; 19:e2205714. [PMID: 36509641 DOI: 10.1002/smll.202205714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Low removal efficiency, long treatment time, and high energy consumption hinder advanced and eco-friendly use of traditional adsorbents and separation membranes. Here, a class of amphiphilically modified 2D porous polymeric nanosandwich is designed and is subsequently assembled into adsorptive membranes. The 2D nanosandwich is gifted with high porosity and excellent pore accessibility, demonstrating rapid adsorption kinetics. The as-assembled membrane integrates unimpeded interlayer channels and well-developed, amphiphilic, and highly accessible intralayer nanopores, leading to ultrafast water permeation (1.2 × 104 L m-2 h-1 bar-1 ), high removal efficiency, and easy regeneration. The family of the membrane can be expanded by changing amphiphilic functional groups, further providing treatment of a wide-spectrum of pollutants, including aromatic compounds, pesticide, and pharmaceuticals. It is believed that the novel amphiphilically modified adsorptive membrane offers a distinct water treatment strategy with ultrahigh water permeation and efficient pollutants removal performances, and provides a multiple-in-one solution to the detection and elimination of pollutants.
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Affiliation(s)
- Wen Huang
- PCFM Lab and GD HPPC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, P. R. China
- Sun Yat-sen University Cancer Center, Guangzhou, 510060, P. R. China
| | - Qiantong Liu
- PCFM Lab and GD HPPC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Xingcai Zhang
- PCFM Lab and GD HPPC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Zirun Chen
- PCFM Lab and GD HPPC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Bingna Zheng
- Center of Accurate Diagnosis, Treatment and Transformation of Bone and Joint Diseases, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518033, P. R. China
| | - Dingcai Wu
- PCFM Lab and GD HPPC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, P. R. China
- Center of Accurate Diagnosis, Treatment and Transformation of Bone and Joint Diseases, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518033, P. R. China
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17
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Xi X, Wan S, Deng Y, Xia Y, Xiao J, Cao Y, Huang X, Li Z, Yang D, Dong A, Li T. Amphiphilic Self-Assembly of Nanocrystals at Emulsion Interface Renders Fast and Scalable Quasi-Nanosheet Formation. ACS Appl Mater Interfaces 2022; 14:50354-50362. [PMID: 36315871 DOI: 10.1021/acsami.2c14274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Scalable assembly of nanocrystals (NCs) into two-dimensional (2D) nanosheets has aroused great interest, yet it remains under-explored. This is because current 2D assembly methods rely mainly on the use of solid- or liquid-air interfaces, which are inherently difficult for upscaling and thus lack practicability. Here, with a microemulsion-based amphiphilic assembly technique, we achieve a fast and scalable preparation of free-standing nanosheets comprising few-layer, tightly packed NCs, namely, quasi-nanosheets (quasi-NSs). Acetic acid, acting as both solvent and surface-treatment agent, is used to render the initially hydrophobic NCs amphiphilic, while simultaneously inducing the interfacial instability right after the assembly of NCs at the emulsion interface to afford quasi-NSs. This amphiphilic assembly method is applicable to a variety of NCs, and multicomponent quasi-NSs are also attainable upon coassembly of different types of NCs. In addition, the structural advantages of quasi-NSs in catalysis are showcased by using NiFe2O4 quasi-NSs as electrocatalysts for the oxygen evolution reaction. This work opens a new route for the scalable construction of 2D NC sheets with designated components and functions.
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Affiliation(s)
- Xiangyun Xi
- State Key Laboratory of Molecule Engineering of Polymers and Department of Macromolecular science, iCHEM, Fudan University, Shanghai 200433, China
| | - Siyu Wan
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iCHEM, Fudan University, Shanghai 200433, China
| | - Yuwei Deng
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iCHEM, Fudan University, Shanghai 200433, China
| | - Yan Xia
- State Key Laboratory of Molecule Engineering of Polymers and Department of Macromolecular science, iCHEM, Fudan University, Shanghai 200433, China
| | - Jingyu Xiao
- State Key Laboratory of Molecule Engineering of Polymers and Department of Macromolecular science, iCHEM, Fudan University, Shanghai 200433, China
| | - Yangfei Cao
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iCHEM, Fudan University, Shanghai 200433, China
| | - Xianwu Huang
- State Key Laboratory of Molecule Engineering of Polymers and Department of Macromolecular science, iCHEM, Fudan University, Shanghai 200433, China
| | - Zhicheng Li
- State Key Laboratory of Molecule Engineering of Polymers and Department of Macromolecular science, iCHEM, Fudan University, Shanghai 200433, China
| | - Dong Yang
- State Key Laboratory of Molecule Engineering of Polymers and Department of Macromolecular science, iCHEM, Fudan University, Shanghai 200433, China
| | - Angang Dong
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iCHEM, Fudan University, Shanghai 200433, China
| | - Tongtao Li
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iCHEM, Fudan University, Shanghai 200433, China
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18
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Lee SH, Kang M, Jang H, Kondaveeti S, Sun K, Kim S, Park HH, Jeong HE. Bifunctional Amphiphilic Nanospikes with Antifogging and Antibiofouling Properties. ACS Appl Mater Interfaces 2022; 14:39478-39488. [PMID: 35959590 DOI: 10.1021/acsami.2c08266] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Over the past few decades, extensive research efforts have been devoted to developing surfaces with unique functionalities, such as controlled wettability, antibiofouling, antifogging, and anti-icing behavior, for applications in a wide range of fields, including biomedical devices, optical instruments, microfluidics, and energy conservation and harvesting. However, many of the previously reported approaches have limitations with regard to eco-friendliness, multifunctionality, long-term stability and efficacy, and cost effectiveness. Herein, we propose a scalable bifunctional surface that simultaneously exhibits excellent antifogging and antibiofouling properties based on the synergistic integration of an eco-friendly and bio-friendly polyethylene glycol (PEG) hydrogel, oleamide (OA), and nanoscale architectures in a single flexible platform. We demonstrate that the PEG-OA-nanostructure hybrid exhibits excellent antifogging performance owing to its enhanced water absorption and spreading properties. We further show that the triple hybrid exhibits notable biofilm resistance without the use of toxic biocides or chemicals by integrating the "fouling-resistant" mechanism of the PEG hydrogel, the "fouling-release" mechanism of OA, and the "foulant-killing" mechanism of the nanostructures.
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Affiliation(s)
- Sang-Hyeon Lee
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Minsu Kang
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Hyejin Jang
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Stalin Kondaveeti
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Kahyun Sun
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Somi Kim
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Hyun-Ha Park
- Department of Mechanical Engineering, Wonkwang University, Jeonbuk 54538, Republic of Korea
| | - Hoon Eui Jeong
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
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Abstract
The search for efficient antimicrobial therapies that can alleviate suffering caused by infections from resistant bacteria is more urgent than ever before. Infections caused by multi-resistant pathogens represent a significant and increasing burden to healthcare and society and researcher are investigating new classes of bioactive compounds to slow down this development. Antimicrobial peptides from the innate immune system represent one promising class that offers a potential solution to the antibiotic resistance problem due to their mode of action on the microbial membranes. However, challenges associated with pharmacokinetics, bioavailability and off-target toxicity are slowing down the advancement and use of innate defensive peptides. Improving the therapeutic properties of these peptides is a strategy for reducing the clinical limitations and synthetic mimics of antimicrobial peptides are emerging as a promising class of molecules for a variety of antimicrobial applications. These compounds can be made significantly shorter while maintaining, or even improving antimicrobial properties, and several downsized synthetic mimics are now in clinical development for a range of infectious diseases. A variety of strategies can be employed to prepare these small compounds and this review describes the different compounds developed to date by adhering to a minimum pharmacophore based on an amphiphilic balance between cationic charge and hydrophobicity. These compounds can be made as small as dipeptides, circumventing the need for large compounds with elaborate three-dimensional structures to generate simplified and potent antimicrobial mimics for a range of medical applications. This review highlight key and recent development in the field of small antimicrobial peptide mimics as a promising class of antimicrobials, illustrating just how small you can go.
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Affiliation(s)
| | - Natalia Molchanova
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Christina I Schroeder
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD, United States
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20
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Yang M, Luo H, Zou W, Liu Y, Xu J, Guo J, Xu J, Zhao N. Ultrafast Solar-Vapor Harvesting Based on a Hierarchical Porous Hydrogel with Wettability Contrast and Tailored Water States. ACS Appl Mater Interfaces 2022; 14:24766-24774. [PMID: 35579439 DOI: 10.1021/acsami.2c03597] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Optimizing the water bonding network in an evaporator is significant for efficient solar-driven vapor generation (SVG). Herein, we report a facile one-pot method to regulate the hydrated structure and wettability in a hierarchical porous hydrogel. An ovalbumin (OVA)-polyacrylamide hydrogel foam was fabricated in a cake-making fashion. Because of the enrichment of amphiphilic OVA at the interface, the hydrophobic walls of the air pores in the foam provide vaporization sites and help reduce parasitic heat loss, while the hydrophilic skeleton with the secondary pores effectively pumps capillary water. Notably, the proportion of intermediate water in the foam reaches 87.6% with the melting point as low as -10 °C. All these features contribute to an exceptional evaporation rate of 3.4-4.5 kg m-2 h-1 under 1 sun and robust SVG performances at high-humidity, weak sunlight, or cold weathers. The strategy of using amphiphilic molecules to optimize the hydrated structures both at the interface and in bulk promises the reasonable design of SVG materials with superior efficiency and weather adaptability.
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Affiliation(s)
- Meng Yang
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Heng Luo
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Weizhi Zou
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yong Liu
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jinhao Xu
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Jing Guo
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Jian Xu
- Institute of Low-Dimensional Materials Genome Initiative, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518061, P. R. China
| | - Ning Zhao
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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21
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Saganuwan SA. Biomedical Applications of Polyurethane Hydrogels, Polyurethane Aerogels and Polyurethane-Graphene Nanocomposite Materials. Cent Nerv Syst Agents Med Chem 2022; 22:79-87. [PMID: 35507789 DOI: 10.2174/1871524922666220429115124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 01/06/2022] [Accepted: 02/05/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Increasing new emerging ill-healths have posed therapeutic challenges in modern medicine. Hence polyurethane hydrogels that comprise polyol, copolymer and extender could be prepared from diverse chemical compounds with adjuvants such as ascorbic acid, sorbitol among others. Their mechano-physicochemical properties are functions of their biological activities. Therefore there is need to assess their therapeutic potentials. METHODS literature were searched on synthesis and medical uses of polyurethane - hydrogels, polyurethane - aerogels and polyurethane - graphene nanocomposite materials, with a view to identifying their sources, synthesis, mechanical and physiochemical properties, biomedical applications, chirality, and the relevance of Lipinski's rule of five in the synthesis of oral polyurethane nanocomposite materials. RESULTS The prepared hydrogels and aerogels could be used as polymer carriers for intradermal, cutaneous and intranasal drugs. They can be fabricated and used as prosthetics. In addition the strength modulus (tensile stress-tensile strain ratio), biodegradability, biocompatibility and non-toxic effects of the polyurethane hydrogels and aerogels are the highly desirable properties. However, body and environmental temperatures may contribute to their instability, hence there is need to improve on the synthesis of aerogels and hydrogels of polyurethane that can last for many years. Alcoholism, diabetes, pyrogenic diseases, mechanical and physical forces, and physiological variability may also reduce the life span of polyurethane aerogels and hydrogels. CONCLUSION Synthesis of polyurethane hydrogel-aerogel complex that can be used in complex, rare biomedical cases is of paramount importance. These hydrogels and aerogels may be hydrophobic, hydrophilic, aerophobic-aerophilic or amphiphilic and sometimes lipophilic depending on structural components and the intended biomedical uses. Polyurethane graphene nanocomposite materials are used in the treatment of a myriad of diseases including cancer and bacterial infection.
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Affiliation(s)
- Saganuwan Alhaji Saganuwan
- Department Of Veterinary Pharmacology And Toxicology, College Of Veterinary Medicine, Federal University Of Agriculture P.M.B 2373, Makurdi, Benue State, Nigeria
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22
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Islam MS, Sharif A, Kwan N, Tam KC. Bile Acid Sequestrants for Hypercholesterolemia Treatment Using Sustainable Biopolymers: Recent Advances and Future Perspectives. Mol Pharm 2022; 19:1248-1272. [PMID: 35333534 DOI: 10.1021/acs.molpharmaceut.2c00007] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Bile acids, the endogenous steroid nucleus containing signaling molecules, are responsible for the regulation of multiple metabolic processes, including lipoprotein and glucose metabolism to maintain homeostasis. Within our body, they are directly produced from their immediate precursors, cholesterol C (low-density lipoprotein C, LDL-C), through the enzymatic catabolic process mediated by 7-α-hydroxylase (CYP7A1). Bile acid sequestrants (BASs) or amphiphilic resins that are nonabsorbable to the human body (being complex high molecular weight polymers/electrolytes) are one of the classes of drugs used to treat hypercholesterolemia (a high plasma cholesterol level) or dyslipidemia (lipid abnormalities in the body); thus, they have been used clinically for more than 50 years with strong safety profiles as demonstrated by the Lipid Research Council-Cardiovascular Primary Prevention Trial (LRC-CPPT). They reduce plasma LDL-C and can slightly increase high-density lipoprotein C (HDL-C) levels, whereas many of the recent clinical studies have demonstrated that they can reduce glucose levels in patients with type 2 diabetes mellitus (T2DM). However, due to higher daily dosage requirements, lower efficacy in LDL-C reduction, and concomitant drug malabsorption, research to develop an "ideal" BAS from sustainable or natural sources with better LDL-C lowering efficacy and glucose regulations and lower side effects is being pursued. This Review discusses some recent developments and their corresponding efficacies as bile removal or LDL-C reduction of natural biopolymer (polysaccharide)-based compounds.
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Affiliation(s)
- Muhammad Shahidul Islam
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Anjiya Sharif
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Nathania Kwan
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Kam C Tam
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
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23
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Hilburg SL, Alexander-Katz A. Solvent Remodeling in Single-Chain Amphiphilic Heteropolymer Systems. Macromol Rapid Commun 2022; 43:e2200142. [PMID: 35298063 DOI: 10.1002/marc.202200142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/08/2022] [Indexed: 11/08/2022]
Abstract
This work demonstrates the remodeling of single-chain nanoparticles (SCNPs) upon a transition to organic solvent through molecular dynamics simulations. Methacrylate-based random heteropolymers (RHPs), assembled via transient non-covalent linkages in water, have shown promise in an assortment of applications that harness their bio-inspired properties. While their molecular behavior has been broadly characterized in aqueous environments, many newer applications include the use of organic solvent rather than bio-mimetic conditions. The polymer assemblies, typically driven by the hydrophobic effect in water, are less well understood in non-aqueous solution. Here, a specific RHP system is examined which forms compact globular morphologies in highly polar or highly non-polar environments while adopting extended conformations in solvents of intermediate polarity. The pivotal role of electrostatic interactions between charge groups in low dielectric mediums is also observed. Finally, high temperature anneal cycles are compared to room temperature transformations to illuminate barriers to remodeling upon environmental changes. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Shayna L Hilburg
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA
| | - Alfredo Alexander-Katz
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA
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24
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Kavaliauskaite M, Steponaviciute M, Kievisaite J, Katelnikovas A, Klimkevicius V. Synthesis and Study of Thermoresponsive Amphiphilic Copolymers via RAFT Polymerization. Polymers (Basel) 2022; 14:229. [PMID: 35054636 PMCID: PMC8777995 DOI: 10.3390/polym14020229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/04/2022] [Accepted: 01/04/2022] [Indexed: 01/02/2023] Open
Abstract
Synthesis and study of well-defined thermoresponsive amphiphilic copolymers with various compositions were reported. Kinetics of the reversible addition-fragmentation chain transfer (RAFT) (co)polymerization of styrene (St) and oligo(ethylene glycol) methyl ether methacrylate (PEO5MEMA) was studied by size exclusion chromatography (SEC) and 1H NMR spectroscopy, which allows calculating not only (co)polymerization parameters but also gives valuable information on RAFT (co)polymerization kinetics, process control, and chain propagation. Molecular weight Mn and dispersity Đ of the copolymers were determined by SEC with triple detection. The detailed investigation of styrene and PEO5MEMA (co)polymerization showed that both monomers prefer cross-polymerization due to their low reactivity ratios (r1 < 1, r2 < 1); therefore, the distribution of monomeric units across the copolymer chain of p(St-co-PEO5MEMA) with various compositions is almost ideally statistical or azeotropic. The thermoresponsive properties of p(St-co-PEO5MEMA) copolymers in aqueous solutions as a function of different hydrophilic/hydrophobic substituent ratios were evaluated by measuring the changes in hydrodynamic parameters under applied temperature using the dynamic light scattering method (DLS).
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Affiliation(s)
| | | | | | | | - Vaidas Klimkevicius
- Institute of Chemistry, Vilnius University, LT-03225 Vilnius, Lithuania; (M.K.); (M.S.); (J.K.); (A.K.)
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25
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Raj A, Kumar A, Dames JF. Tapping the Role of Microbial Biosurfactants in Pesticide Remediation: An Eco-Friendly Approach for Environmental Sustainability. Front Microbiol 2021; 12:791723. [PMID: 35003022 PMCID: PMC8733403 DOI: 10.3389/fmicb.2021.791723] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 11/22/2021] [Indexed: 11/15/2022] Open
Abstract
Pesticides are used indiscriminately all over the world to protect crops from pests and pathogens. If they are used in excess, they contaminate the soil and water bodies and negatively affect human health and the environment. However, bioremediation is the most viable option to deal with these pollutants, but it has certain limitations. Therefore, harnessing the role of microbial biosurfactants in pesticide remediation is a promising approach. Biosurfactants are the amphiphilic compounds that can help to increase the bioavailability of pesticides, and speeds up the bioremediation process. Biosurfactants lower the surface area and interfacial tension of immiscible fluids and boost the solubility and sorption of hydrophobic pesticide contaminants. They have the property of biodegradability, low toxicity, high selectivity, and broad action spectrum under extreme pH, temperature, and salinity conditions, as well as a low critical micelle concentration (CMC). All these factors can augment the process of pesticide remediation. Application of metagenomic and in-silico tools would help by rapidly characterizing pesticide degrading microorganisms at a taxonomic and functional level. A comprehensive review of the literature shows that the role of biosurfactants in the biological remediation of pesticides has received limited attention. Therefore, this article is intended to provide a detailed overview of the role of various biosurfactants in improving pesticide remediation as well as different methods used for the detection of microbial biosurfactants. Additionally, this article covers the role of advanced metagenomics tools in characterizing the biosurfactant producing pesticide degrading microbes from different environments.
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Affiliation(s)
- Aman Raj
- Metagenomics and Secretomics Research Laboratory, Department of Botany, Dr. Harisingh Gour University (Central University), Sagar, India
| | - Ashwani Kumar
- Metagenomics and Secretomics Research Laboratory, Department of Botany, Dr. Harisingh Gour University (Central University), Sagar, India
- Mycorrhizal Research Laboratory, Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, South Africa
| | - Joanna Felicity Dames
- Mycorrhizal Research Laboratory, Department of Biochemistry and Microbiology, Rhodes University, Grahamstown, South Africa
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26
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Schardt L, Martínez Guajardo A, Koc J, Clarke JL, Finlay JA, Clare AS, Gardner H, Swain GW, Hunsucker K, Laschewsky A, Rosenhahn A. Low Fouling Polysulfobetaines with Variable Hydrophobic Content. Macromol Rapid Commun 2021; 43:e2100589. [PMID: 34734670 DOI: 10.1002/marc.202100589] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 11/01/2021] [Indexed: 11/08/2022]
Abstract
Amphiphilic polymer coatings combining hydrophilic elements, in particular zwitterionic groups, and hydrophobic elements comprise a promising strategy to decrease biofouling. However, the influence of the content of the hydrophobic component in zwitterionic coatings on the interfacial molecular reorganization dynamics and the anti-fouling performance is not well understood. Therefore, coatings of amphiphilic copolymers of sulfobetaine methacrylate 3-[N-2'-(methacryloyloxy)ethyl-N,N-dimethyl]-ammonio propane-1-sulfonate (SPE) are prepared which contain increasing amounts of hydrophobic n-butyl methacrylate (BMA). Their fouling resistance is compared to that of their homopolymers PSPE and PBMA. The photo-crosslinked coatings form hydrogel films with a hydrophilic surface. Fouling by the proteins fibrinogen and lysozyme as well as by the diatom Navicula perminuta and the green algae Ulva linza is assessed in laboratory assays. While biofouling is strongly reduced by all zwitterionic coatings, the best fouling resistance is obtained for the amphiphilic copolymers. Also in preliminary field tests, the anti-fouling performance of the amphiphilic copolymer films is superior to that of both homopolymers. When the coatings are exposed to a marine environment, the reduced susceptibility to silt incorporation, in particular compared to the most hydrophilic polyzwitterion PSPE, likely contributes to the improved fouling resistance.
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Affiliation(s)
- Lisa Schardt
- Analytical Chemistry - Biointerfaces, Ruhr University Bochum, 44801, Bochum, Germany
| | | | - Julian Koc
- Analytical Chemistry - Biointerfaces, Ruhr University Bochum, 44801, Bochum, Germany
| | - Jessica L Clarke
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - John A Finlay
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Anthony S Clare
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Harrison Gardner
- Center for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, FL, 32901, USA
| | - Geoffrey W Swain
- Center for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, FL, 32901, USA
| | - Kelli Hunsucker
- Center for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, FL, 32901, USA
| | - André Laschewsky
- Institute of Chemistry, University of Potsdam, 14476, Potsdam, Germany.,Fraunhofer Institute of Applied Polymer Research IAP, 14476, Potsdam, Germany
| | - Axel Rosenhahn
- Analytical Chemistry - Biointerfaces, Ruhr University Bochum, 44801, Bochum, Germany
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27
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De Silva EH, Salamat N, Zhang L, Zheng J, Novak BM. Water-soluble polycarbodiimides and their cytotoxic and antifungal properties. J Biomater Sci Polym Ed 2021; 32:2369-2386. [PMID: 34428379 DOI: 10.1080/09205063.2021.1971821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
We have successfully synthesized water-soluble neutral and polyelectrolyte helical polycarbodiimides and studied their biological properties. These polymers were prepared by decorating carbodiimide backbones with nonionic, hydrophilic functional groups such as dimethylamine, piperazine, and morpholine. Additionally, the 3° amines present in these functional groups were quaternized using methyl iodide as the alkylating agent to produce their ionic analogs. Polycarbodiimides were chosen as the base polymer used because of their facile chemical modification, pH tolerance in terms of both their helical conformations and degradation behaviors, and tunable helical inversion barriers. Hydrophilic side groups, such as morpholine, dimethylamine, and piperazine, can be used to balance the amphiphilic architecture of the polycarbodiimides along with lipophilic groups, such as alkyl side chains. A chiral R or S BINOL Ti(IV) isopropoxide catalyst was used to control the handedness of the polycarbodiimide helices in these studies. These ionic and neutral polycarbodiimides were subsequently studied for potential antimicrobial and cytotoxic properties. Poly[N-methyl-N'-2-morpholinoethylcarbodiimide], as an example, exhibited significant antifungal properties against Candida albicans. Also, Poly[N-methyl-N'-2-morpholinoethylcarbodiimide] showed significant inhibition of biofilm formation. This suggests that the polymer is a promising candidate for antifungal biomedical applications. Measuring cytotoxicity against urinary bladder cancer cells, poly[N-[3-(dimethylamino)propyl)]-N'-[3-(morpholino)propyl]carbodiimide] (S-cat) and poly[N-[3-(dimethylamino)propyl)]-N'-[3-(morpholino)propyl]carbodiimide]-MeI (S-cat) showed significantly low IC50 values. The IC50 values of poly[N-[3-(dimethylamino)propyl)]-N'-[3-(morpholino)propyl]carbodiimide] (S-cat) and Poly[N-[3-(dimethylamino)propyl)]-N'-[3-(morpholino)propyl]carbodiimide]-MeI (S-cat) are 3.50 μM and 1.27 μM, respectively. The significantly low cancer cell growth inhibition concentration implies the highest cytotoxicity of the polymers, suggesting potential applications as cancer therapeutics. These results also showed that the functionalization and chirality of polycarbodiimides modulate their anticancer and antifungal activity.
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Affiliation(s)
- Enosha Harshani De Silva
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, TX, USA
| | - Narges Salamat
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Li Zhang
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Jie Zheng
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, TX, USA
| | - Bruce M Novak
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, TX, USA
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28
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Jiang M, Wu J, Liu W, Ren H, Zhang W, Lee CS, Wang P. Self-assembly of Amphiphilic Porphyrins To Construct Nanoparticles for Highly Efficient Photodynamic Therapy. Chemistry 2021; 27:11195-11204. [PMID: 33960049 DOI: 10.1002/chem.202101199] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Indexed: 11/08/2022]
Abstract
Hydrophobic photosensitizers greatly affect cell permeability and enrichment in tumors, but they cannot be used directly for clinical applications because they always aggregate in water, preventing their circulation in the blood and accumulation in tumor cells. As a result, amphiphilic photosensitizers are highly desirable. Although nanomaterial-based photosensitizers can solve water solubility, they have the disadvantages of complicated operation, poor reproducibility, low drug loading, and poor stability. In this work, an efficient synthesis strategy is proposed that converts small molecules into nanoparticles in 100 % aqueous solution by molecular assembly without the addition of any foreign species. Three photosensitizers with triphenylphosphine units and ethylene glycol chains of different lengths, TPP-PPh3 , TPP-PPh3 -2PEG and TPP-PPh3 -4PEG, were synthesized to improve amphiphilicity. Of the three photosensitizers, TPP-PPh3 -4PEG is the most efficient (singlet oxygen yield: 0.89) for tumor photodynamic therapy not only because of its definite constituent, but also because its amphiphilic structure allows it to self-assemble in water.
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Affiliation(s)
- Meiyu Jiang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of the Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jiasheng Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Weimin Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of the Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Haohui Ren
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Wenjun Zhang
- Center of Super-Diamond and Advanced Films (COSDAF) and CityU-CAS Joint Laboratory of Functional Materials and Devices, City University of Hong Kong Kowloon, Hong Kong SAR, China
| | - Chun-Sing Lee
- Center of Super-Diamond and Advanced Films (COSDAF) and CityU-CAS Joint Laboratory of Functional Materials and Devices, City University of Hong Kong Kowloon, Hong Kong SAR, China
| | - Pengfei Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of the Chinese Academy of Sciences, Beijing, 100049, P. R. China
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29
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Bignotti F, Baldi F, Grassi M, Abrami M, Spagnoli G. Hydrophobically-Modified PEG Hydrogels with Controllable Hydrophilic/Hydrophobic Balance. Polymers (Basel) 2021; 13:polym13091489. [PMID: 34066409 PMCID: PMC8124857 DOI: 10.3390/polym13091489] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/01/2021] [Accepted: 05/03/2021] [Indexed: 01/18/2023] Open
Abstract
This work reports on a novel method to synthesize hydrophobically-modified hydrogels by curing epoxy monomers with amines. The resulting networks contain hydrophilic poly(ethylene glycol) (PEG) segments, poly(propylene glycol) (PPG) segments, and C18 alkyl segments. By varying the content of C18 segments, networks with different hydrophilic-lipophilic balance (HLB) are obtained. All networks show an amphiphilic behavior, swelling considerably both in organic solvents and in aqueous media. In the latter they display a thermosensitive behavior, which is highly affected by the network HLB and the pH of the solution. A decrease in HLB results in an increment of the polymer weight content (wp) due to hydrophobic association. Furthermore, a reduction in HLB induces a remarkable increase in initial modulus, elongation at break and tensile strength, especially when wp becomes greater than about 10%. Low field nuclear magnetic resonance (LF-NMR) experiments evidence that, when HLB decreases, a sudden and considerable increase in hydrogel heterogeneity takes place due to occurrence of extensive physical crosslinking. Available data suggest that in systems with wp ≳ 10% a continuous physical network superimposes to the pre-existing chemical network and leads to a sort of double network capable of considerably improving hydrogel toughness.
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Affiliation(s)
- Fabio Bignotti
- Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, I-25123 Brescia, Italy; (F.B.); (G.S.)
- Correspondence:
| | - Francesco Baldi
- Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, I-25123 Brescia, Italy; (F.B.); (G.S.)
| | - Mario Grassi
- Department of Engineering and Architecture, University of Trieste, Building B, via Valerio 6, I-34127 Trieste, Italy; (M.G.); (M.A.)
| | - Michela Abrami
- Department of Engineering and Architecture, University of Trieste, Building B, via Valerio 6, I-34127 Trieste, Italy; (M.G.); (M.A.)
| | - Gloria Spagnoli
- Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, I-25123 Brescia, Italy; (F.B.); (G.S.)
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30
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Ciejka J, Grzybala M, Gut A, Szuwarzynski M, Pyrc K, Nowakowska M, Szczubiałka K. Tuning the Surface Properties of Poly(Allylamine Hydrochloride)-Based Multilayer Films. Materials (Basel) 2021; 14:2361. [PMID: 34062785 PMCID: PMC8125107 DOI: 10.3390/ma14092361] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/24/2021] [Accepted: 04/29/2021] [Indexed: 11/17/2022]
Abstract
The layer-by-layer (LbL) method of polyelectrolyte multilayer (PEM) fabrication is extremely versatile. It allows using a pair of any oppositely charged polyelectrolytes. Nevertheless, it may be difficult to ascribe a particular physicochemical property of the resulting PEM to a structural or chemical feature of a single component. A solution to this problem is based on the application of a polycation and a polyanion obtained by proper modification of the same parent polymer. Polyelectrolyte multilayers (PEMs) were prepared using the LbL technique from hydrophilic and amphiphilic derivatives of poly(allylamine hydrochloride) (PAH). PAH derivatives were obtained by the substitution of amine groups in PAH with sulfonate, ammonium, and hydrophobic groups. The PEMs were stable in 1 M NaCl and showed three different modes of thickness growth: exponential, mixed exponential-linear, and linear. Their surfaces ranged from very hydrophilic to hydrophobic. Root mean square (RMS) roughness was very variable and depended on the PEM composition, sample environment (dry, wet), and the polymer constituting the topmost layer. Atomic force microscopy (AFM) imaging of the surfaces showed very different morphologies of PEMs, including very smooth, porous, and structured PEMs with micellar aggregates. Thus, by proper choice of PAH derivatives, surfaces with different physicochemical features (growth type, thickness, charge, wettability, roughness, surface morphology) were obtained.
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Affiliation(s)
- Justyna Ciejka
- Department of Engineering and Technology of Chemical Processes, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
- Department of Physical Chemistry and Electrochemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland; (A.G.); (M.N.)
- Virogenetics Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7A, 30-387 Krakow, Poland;
| | - Michal Grzybala
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland;
| | - Arkadiusz Gut
- Department of Physical Chemistry and Electrochemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland; (A.G.); (M.N.)
| | - Michal Szuwarzynski
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland;
| | - Krzysztof Pyrc
- Virogenetics Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7A, 30-387 Krakow, Poland;
| | - Maria Nowakowska
- Department of Physical Chemistry and Electrochemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland; (A.G.); (M.N.)
| | - Krzysztof Szczubiałka
- Department of Physical Chemistry and Electrochemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland; (A.G.); (M.N.)
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31
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Chen G, Hao B, Wang Y, Wang Y, Xiao H, Li H, Huang X, Shi B. Insights into Regional Wetting Behaviors of Amphiphilic Collagen for Dual Separation of Emulsions. ACS Appl Mater Interfaces 2021; 13:18209-18217. [PMID: 33845568 DOI: 10.1021/acsami.0c22601] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Industrial manufacture generates a huge quantity of emulsion wastewater, which causes serious threats to the aquatic ecosystems. Water-in-oil (W/O) and oil-in-water (O/W) emulsions are two major types of emulsions discharged by industries. However, dual separation of W/O and O/W emulsions remains a challenging issue due to the contradictory permselectivity for separating the two emulsions. In the present investigation, the amphiphilicity-derived regional wetting mechanism of water and oil on the amphiphilic collagen fibers was revealed based on the combination of numerous experiments and molecular dynamics (MD) simulations. Electrostatic interactions and van der Waals force were manifested to be the driving forces of regional wetting in the hydrophilic and hydrophobic regions, respectively. The regional wetting endowed amphiphilic collagen fibers with underwater oleophobicity and underoil hydrophilicity, which enabled dual separation of emulsions by selectively retaining the dispersed water phase of W/O emulsions in the hydrophilic regions while the dispersed oil phase of O/W emulsions in the hydrophobic regions. The achieved separation efficiency was higher than 99.98%, and the flux reached 3337.6 L m-2 h-1. Initial wetting status significantly affects the regional wetting-enabled dual separation. Based on the MD simulations, amphiphilic intramolecular conformations of tropocollagen were suggested to be the origins of regional wetting on collagen fibers. Our findings may pave the way for developing high-performance dual separation materials that are promising to be utilized for the practical treatment of emulsion wastewater.
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Affiliation(s)
- Guangyan Chen
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, P. R. China
| | - Baicun Hao
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, P. R. China
| | - Yujia Wang
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, P. R. China
| | - Yanan Wang
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, P. R. China
| | - Hanzhong Xiao
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, P. R. China
| | - Huifang Li
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, P. R. China
| | - Xin Huang
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, P. R. China
| | - Bi Shi
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, P. R. China
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32
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Li N, Duan Z, Wang L, Guo C, Zhang H, Gu Z, Gong Q, Luo K. An Amphiphilic PEGylated Peptide Dendron-Gemcitabine Prodrug-Based Nanoagent for Cancer Therapy. Macromol Rapid Commun 2021; 42:e2100111. [PMID: 33871122 DOI: 10.1002/marc.202100111] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/24/2021] [Indexed: 02/05/2023]
Abstract
An amphiphilic peptide dendrimer conjugated with gemcitabine (GEM), PEGylated dendron-Gly-Phe-Leu-Gly-GEM (PEGylated dendron-GFLG-GEM), is developed as a nano-prodrug for breast cancer therapy. The self-assembled behavior is observed under a transmission electron microscopy and dynamic light scattering. The negatively charged surface and hydrodynamic size of the amphiphilic nanosized prodrug supported that the prodrug can maintain the stability of GEM during circulation and accumulate in the tumor tissue. Drug release assays are conducted to monitor the release of GEM from this nanodrug delivery system in response to the tumor microenvironment, and these assays confirm that GEM released from the nanocarrier is identical to free GEM. The GEM prodrug can prevent proliferation of tumor cells. The therapeutic effect against breast cancer is systematically investigated using an in vivo animal model. Immunohistochemical results are aligned with the significantly enhanced anticancer efficacy of GEM released from the prodrug. This self-assembled amphiphilic drug delivery nanocarrier may broaden the application for GEM and other anticancer agents for breast cancer chemotherapy.
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Affiliation(s)
- Ning Li
- Laboratory of Stem Cell Biology, and Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University Chengdu, Chengdu, 610041, P. R. China.,School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Zhenyu Duan
- Laboratory of Stem Cell Biology, and Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University Chengdu, Chengdu, 610041, P. R. China
| | - Lili Wang
- School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Chunhua Guo
- Laboratory of Stem Cell Biology, and Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University Chengdu, Chengdu, 610041, P. R. China.,Department of Radiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Hu Zhang
- Amgen Bioprocessing Centre, Keck Graduate Institute, Claremont, CA, 91711, USA
| | - Zhongwei Gu
- Laboratory of Stem Cell Biology, and Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University Chengdu, Chengdu, 610041, P. R. China
| | - Qiyong Gong
- Laboratory of Stem Cell Biology, and Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University Chengdu, Chengdu, 610041, P. R. China
| | - Kui Luo
- Laboratory of Stem Cell Biology, and Huaxi MR Research Center (HMRRC), Department of Radiology, National Clinical Research Center for Geriatrics, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University Chengdu, Chengdu, 610041, P. R. China
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Hu Y, Ren Y, Shi R, Yu J, Sun Z, Guo S, Guo J, Yan F. Robust and High-Temperature-Resistant Nanofiber Membrane Separators for Li-Metal, Li-Sulfur, and Aqueous Li-Ion Batteries. ACS Appl Mater Interfaces 2021; 13:16289-16299. [PMID: 33784815 DOI: 10.1021/acsami.1c00207] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Mechanically strong separators with good electrolyte wettability and low-shrinkage properties are desirable for highly efficient and safe lithium batteries. In this study, multifunctional nanofiber membranes are fabricated by electrospinning a homogeneous solution containing amphiphilic poly(ethylene glycol)diacrylate-grafted siloxane and polyacrylonitrile. After the chemical cross-linking of siloxane, the prepared nanofiber membranes are found to exhibit good mechanical properties, high thermostability, and superior electrolyte-philicity with aqueous and nonaqueous electrolytes. Li-metal cells with the fabricated membrane separator exhibit high cycling stability (Coulombic efficiency of 99.8% after 1000 cycles). Moreover, improved cycling stability of Li-sulfur batteries can be achieved using these membrane separators. These membrane separators can be further used in flexible aqueous lithium-ion batteries and exhibit steady electrochemistry performance. This work opens up a potential route for designing multifunctional universal separators for rechargeable batteries.
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Affiliation(s)
- Yin Hu
- Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199 Renai Road, Suzhou 215123, China
| | - Yongyuan Ren
- Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199 Renai Road, Suzhou 215123, China
| | - Rongwei Shi
- School of Material and Chemical Engineering, Tongren University, Tongren 554300, Guizhou, China
| | - Jiangtao Yu
- Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199 Renai Road, Suzhou 215123, China
| | - Zhe Sun
- Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199 Renai Road, Suzhou 215123, China
| | - Siyu Guo
- Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199 Renai Road, Suzhou 215123, China
| | - Jiangna Guo
- Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199 Renai Road, Suzhou 215123, China
| | - Feng Yan
- Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199 Renai Road, Suzhou 215123, China
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Rodríguez-Acosta GL, Hernández-Montalbán C, Vega-Razo MFS, Castillo-Rodríguez IO, Martínez-García M. Nanomedical Applications of Amphiphilic Dendrimeric Micelles. Curr Med Chem 2021; 28:7937-7960. [PMID: 33781182 DOI: 10.2174/0929867328666210329125601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 02/16/2021] [Accepted: 02/21/2021] [Indexed: 11/22/2022]
Abstract
In recent years, polymeric materials with the ability to self-assemble into micelles have been increasingly investigated for application in various fields, but mainly in biomedicine. Micellar morphology is interesting in the field of drug transport and delivery, since micelles can encapsulate hydrophobic molecules in their nucleus, have active molecules in their outer layer, and due to their nanometric size, can take advantage of the enhanced permeability and retention (EPR) effect, prolong the time in circulation and avoid renal clearance. In addition, nanobioactive molecules (joined in covalent form or by host-host interaction), such as drugs, bioimaging molecules, targeting ligands, "cross-linkable" molecules or bonds, sensitive to internal or external stimuli, can be incorporated into them and showed better activity as anticancer agents, siRNA delivery agents as well as antiviral and antiparasitic compounds. The present work is a review of the information published, which is the most important about the synthesis and biological importance of the confined multivalent cooperation and the ability to modify the dendritic structure, provide the versatility to create and improve the amphiphiles used in the micellar supramolecular field. The most studied structures are the hybrid copolymers formed by the combination of linear polymers and dendrons. However, small dendritic molecules that do not involve linear polymers have also been developed, such as Janus dendrimers, facial dendrons, and dendritic amphiphiles with only one dendron. Amphiphilic dendrimer micelles have achieved efficient and promising results, both in in vitro and in vivo tests, which encourage their research for future application in nanotherapies.
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Affiliation(s)
- Guillermo Leobardo Rodríguez-Acosta
- Departmento de Química Orgánica, Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito Exterior, Coyoacán, P.O. Box: 04510, Ciudad de México. Mexico
| | - Carlos Hernández-Montalbán
- Departmento de Química Orgánica, Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito Exterior, Coyoacán, P.O. Box: 04510, Ciudad de México. Mexico
| | - María Fernanda Sabrina Vega-Razo
- Departmento de Química Orgánica, Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito Exterior, Coyoacán, P.O. Box: 04510, Ciudad de México. Mexico
| | - Irving Osiel Castillo-Rodríguez
- Departmento de Química Orgánica, Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito Exterior, Coyoacán, P.O. Box: 04510, Ciudad de México. Mexico
| | - Marcos Martínez-García
- Departmento de Química Orgánica, Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito Exterior, Coyoacán, P.O. Box: 04510, Ciudad de México. Mexico
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Vignesh V, Stafslien S, Evans M, Wise K, Marmo A, Tonks M, Brennan A. Comparative analysis of two isocyanate-free urethane-based gels for antifouling applications. Biofouling 2021; 37:131-144. [PMID: 33730945 DOI: 10.1080/08927014.2020.1870679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/21/2020] [Accepted: 12/28/2020] [Indexed: 06/12/2023]
Abstract
Amphiphilic gels consisting of acrylamide (AAM)/2-hydroxyethyl methacrylate (HEMA), hexafluorobutyl methacrylate (HFBMA) and non-isocyanate urethane dimethacrylate (NIUDMA) of varying molecular weights were compared. A three-level Taguchi analysis was performed using the amount of AAM/HEMA, HFBMA, NIUDMA and reaction time as dependent variables to determine the optimal formulation of the gels with maximized toughness and elastic modulus. The results were compared with commercial AF/FR Intersleek® coatings (IS 700, IS 900 and IS 1100SR) for their antifouling performance against a marine microalga (Navicula incerta), a marine bacterium (Cellulophaga lytica) and adult barnacles (Amphibalanus amphitrite). The toughness, elastic modulus and strain at break of the optimized AAM gels ranged from 3 to7 MPa, 25 to 72 MPa and 80% to 170%, respectively, whereas those of the optimized HEMA gels ranged from 1 to 3 MPa, 13 to 23 MPa and 76% to 160%, respectively. The gels, particularly AHN(E9) and HHN(E12), showed reductions of attachment compared with IS700 of up to 93% and 58%, respectively.
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Affiliation(s)
- Vishal Vignesh
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida, USA
| | - Shane Stafslien
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, North Dakota, USA
| | - Morgan Evans
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida, USA
| | - Kellen Wise
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida, USA
| | - Alec Marmo
- Department of Materials Science and Engineering, Texas A & M University, Texas, College Station, USA
| | - Michael Tonks
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida, USA
| | - Anthony Brennan
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida, USA
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36
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Vignesh V, Nguyen THH, Vanderwal L, Stafslien S, Brennan A. Tough amphiphilic antifouling coating based on acrylamide, fluoromethacrylate and non-isocyanate urethane dimethacrylate crosslinker. Biofouling 2021; 37:36-48. [PMID: 33487051 DOI: 10.1080/08927014.2020.1870110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 12/21/2020] [Indexed: 06/12/2023]
Abstract
This study is focused on the development of tougher gels using combinations of acrylamide, fluoromethacrylate and a non-isocyanate urethane dimethacrylate (NIUDMA) crosslinker. The NIUDMA was tailored with 2, 3-epoxypropoxy propyl-polydimethylsiloxane segments E9 (MW = 0.36 kg mol-1), E11 (MW = 0.5-0.6 kg mol-1) and E12 (MW = 1-1.4 kg mol-1). A 3 level Taguchi design was used to evaluate the role of each component of the ternary copolymer gel on the elastic modulus and toughness. The toughness ranged from 2.5-7 MJ m-3 whereas the modulus ranged from 27-70 MPa. The formulations with the highest toughness and modulus were screened for their antifouling potential in biological assays against the microalga Navicula incerta and the bacterium Cellulophaga lytica. The E9 gels showed the best performance, achieving a 73% reduction in N. incerta cells and a 92% reduction in C. lytica biofilm remaining after water jetting treatments, when compared with the commercial Intersleek product IS700.
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Affiliation(s)
- Vishal Vignesh
- Department of Materials Science and Engineering, University of Florida, Gainesville, USA
| | - Thi Hoang Ha Nguyen
- Department of Materials Science and Engineering, University of Florida, Gainesville, USA
| | - Lyndsi Vanderwal
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, USA
| | - Shane Stafslien
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, USA
| | - Anthony Brennan
- Department of Materials Science and Engineering, University of Florida, Gainesville, USA
- Margaret A. Ross Professor of Materials Science & Engineering, Affiliate of Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
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37
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Kuliasha CA, Fedderwitz RL, Stafslien SJ, Finlay JA, Clare AS, Brennan AB. Anti-biofouling properties of poly(dimethyl siloxane) with RAFT photopolymerized acrylate/methacrylate surface grafts against model marine organisms. Biofouling 2021; 37:78-95. [PMID: 33491472 DOI: 10.1080/08927014.2021.1875216] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 01/05/2021] [Accepted: 01/07/2021] [Indexed: 06/12/2023]
Abstract
Biofouling of man-made surfaces by marine organisms is a global problem with both financial and environmental consequences. However, the development of non-toxic anti-biofouling coatings is challenged by the diversity of fouling organisms. One possible solution leverages coatings composed of diverse chemical constituents. Reversible addition-fragmentation chain-transfer (RAFT) photopolymerization was used to modify poly(dimethylsiloxane) (PDMSe) surfaces with polymeric grafts composed of three successive combinations of acrylamide, acrylic acid, and hydroxyethyl methacrylate. RAFT limited conflicting variables and allowed for the effect of graft chemistry to be isolated. While all compositions enhanced the anti-biofouling performance compared with the PDMSe control, the ternary, amphiphilic copolymer was the most effective with 98% inhibition of the attachment of zoospores of the green alga Ulva linza, 94% removal of cells of the diatom Navicula incerta, and 62% removal of cells of the bacterium Cellulophaga lytica. However, none of the graft compositions tested were able to mitigate reattachment of adult barnacles, Amphibalanus amphitrite.
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Affiliation(s)
- Cary A Kuliasha
- Department of Materials Science and Engineering, University of Florida, Gainesville, FL, USA
| | - Rebecca L Fedderwitz
- Department of Materials Science and Engineering, University of Florida, Gainesville, FL, USA
| | - Shane J Stafslien
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, ND, USA
| | - John A Finlay
- School of Natural and Environmental Sciences, Newcastle University, Newcastle-upon-Tyne, UK
| | - Anthony S Clare
- School of Natural and Environmental Sciences, Newcastle University, Newcastle-upon-Tyne, UK
| | - Anthony B Brennan
- Department of Materials Science and Engineering, University of Florida, Gainesville, FL, USA
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38
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Song F, Wang Z, Gao W, Fu Y, Wu Q, Liu S. Novel Temperature/Reduction Dual-Stimulus Responsive Triblock Copolymer [P(MEO 2MA- co- OEGMA)- b-PLLA-SS-PLLA- b-P(MEO 2MA- co-OEGMA)] via a Combination of ROP and ATRP: Synthesis, Characterization and Application of Self-Assembled Micelles. Polymers (Basel) 2020; 12:polym12112482. [PMID: 33114693 PMCID: PMC7694170 DOI: 10.3390/polym12112482] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/13/2020] [Accepted: 10/19/2020] [Indexed: 12/23/2022] Open
Abstract
Novel temperature/reduction dual stimulus-responsive triblock copolymers, poly [2-(2-methoxyethoxy) ethyl methacrylate-co-oligo (ethylene glycol) methacrylate]-b-(L-polylactic acid)-SS-b-(L-polylactic acid)-b-poly[2-(2-methoxyethoxy) ethyl methacrylate-co-oligo(ethylene glycol)methacrylate] [P(MEO2MA-co-OEGMA)-b-PLLA-SS-PLLA-b-P(MEO2MA-co-OEGMA)] (SPMO), were synthesized by ring opening polymerization (ROP) of L-lactide and 2,2’-dithio diethanol (SS-DOH), and random copolymerization of MEO2MA and OEGMA monomers via atom transfer radical polymerization (ATRP) technology. The chemical structures and compositions of the novel copolymers were demonstrated by proton nuclear magnetic resonance (1H NMR) and Fourier transform infrared spectroscopy (FTIR). The molecular weights of the novel copolymers were measured by size exclusive chromatography (SEC) and proved to have a relatively narrow molecular weight distribution coefficient (ÐM ≤ 1.50). The water solubility and transmittance of the novel copolymers were tested via visual observation and UV–Vis spectroscopy, which proved the SPMO had a good hydrophilicity and suitable low critical solution temperature (LCST). The critical micelle concentration (CMC) of the novel polymeric micelles were determined using surface tension method and fluorescent probe technology. The particle size and morphology of the novel polymeric micelles were characterized by dynamic light scattering (DLS) and transmission electron microscopy (TEM). The sol–gel transition behavior of the novel copolymers was studied via vial flip experiments. Finally, the hydrophobic anticancer drug doxorubicin (DOX) was used to study the in vitro release behavior of the novel drug-loaded micelles. The results show that the novel polymeric micelles are expected to become a favorable drug carrier. In addition, they exhibit reductive responsiveness to the small molecule reducing agent dithiothreitol (DTT) and temperature responsiveness with temperature changes.
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Wang Y, Shi Z, Sun Y, Wu X, Li S, Dong S, Lan T. Preparation of amphiphilic magnetic polyvinyl alcohol targeted drug carrier and drug delivery research. Des Monomers Polym 2020; 23:197-206. [PMID: 33177950 PMCID: PMC7594732 DOI: 10.1080/15685551.2020.1837442] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Currently, magnetic applications have great potential for development in the field of drug carriers. In this paper, Fe3O4-PVA@SH, an amphiphilic magnetically targeting drug carrier, was prepared by using Fe3O4 and PVA with thiohydrazide-iminopropyltriethoxysilane(TIPTS). The loading capacity of Fe3O4-PVA@SH on Aspirin and the drug release kinetics of loaded drugs were studied. The obtained Fe3O4-PVA@SH exhibits excellent drug release properties in simulating the human body fluid environment (pH 7.2). Since magnetically targeting drug carriers are readily available and have excellent biocompatibility and the characteristics of drug release. This work’s development, preparing amphiphilic magnetically targeting drug carriers in drug delivery and other fields, has great significance.
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Affiliation(s)
- Yazhen Wang
- College of Materials Science and Engineering, Qiqihar University, Qiqihar, China.,Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China.,College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, China
| | - Zhen Shi
- College of Materials Science and Engineering, Qiqihar University, Qiqihar, China.,Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Yu Sun
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Xueying Wu
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Shuang Li
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Shaobo Dong
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Tianyu Lan
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
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40
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Dezanet C, Kempf J, Mingeot-Leclercq MP, Décout JL. Amphiphilic Aminoglycosides as Medicinal Agents. Int J Mol Sci 2020; 21:ijms21197411. [PMID: 33049963 PMCID: PMC7583001 DOI: 10.3390/ijms21197411] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 09/27/2020] [Accepted: 10/02/2020] [Indexed: 12/25/2022] Open
Abstract
The conjugation of hydrophobic group(s) to the polycationic hydrophilic core of the antibiotic drugs aminoglycosides (AGs), targeting ribosomal RNA, has led to the development of amphiphilic aminoglycosides (AAGs). These drugs exhibit numerous biological effects, including good antibacterial effects against susceptible and multidrug-resistant bacteria due to the targeting of bacterial membranes. In the first part of this review, we summarize our work in identifying and developing broad-spectrum antibacterial AAGs that constitute a new class of antibiotic agents acting on bacterial membranes. The target-shift strongly improves antibiotic activity against bacterial strains that are resistant to the parent AG drugs and to antibiotic drugs of other classes, and renders the emergence of resistant Pseudomonas aeruginosa strains highly difficult. Structure–activity and structure–eukaryotic cytotoxicity relationships, specificity and barriers that need to be crossed in their development as antibacterial agents are delineated, with a focus on their targets in membranes, lipopolysaccharides (LPS) and cardiolipin (CL), and the corresponding mode of action against Gram-negative bacteria. At the end of the first part, we summarize the other recent advances in the field of antibacterial AAGs, mainly published since 2016, with an emphasis on the emerging AAGs which are made of an AG core conjugated to an adjuvant or an antibiotic drug of another class (antibiotic hybrids). In the second part, we briefly illustrate other biological and biochemical effects of AAGs, i.e., their antifungal activity, their use as delivery vehicles of nucleic acids, of short peptide (polyamide) nucleic acids (PNAs) and of drugs, as well as their ability to cleave DNA at abasic sites and to inhibit the functioning of connexin hemichannels. Finally, we discuss some aspects of structure–activity relationships in order to explain and improve the target selectivity of AAGs.
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Affiliation(s)
- Clément Dezanet
- Molecular Pharmacochemistry Department, University Grenoble Alpes, CNRS, 470 Rue de la Chimie, F-38000 Grenoble, France; (C.D.); (J.K.)
| | - Julie Kempf
- Molecular Pharmacochemistry Department, University Grenoble Alpes, CNRS, 470 Rue de la Chimie, F-38000 Grenoble, France; (C.D.); (J.K.)
| | - Marie-Paule Mingeot-Leclercq
- Cellular and Molecular Pharmacology Unit, Louvain Drug Research Institute, Catholic University of Louvain, Avenue E. Mounier 73, UCL B1.73.05, 1200 Brussels, Belgium
- Correspondence: (M.-P.M.-L.); (J.-L.D.)
| | - Jean-Luc Décout
- Molecular Pharmacochemistry Department, University Grenoble Alpes, CNRS, 470 Rue de la Chimie, F-38000 Grenoble, France; (C.D.); (J.K.)
- Correspondence: (M.-P.M.-L.); (J.-L.D.)
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Wang J, Yi S, Liu J, Sun S, Liu Y, Yang D, Xi K, Gao G, Abdelkader A, Yan W, Ding S, Kumar RV. Suppressing the Shuttle Effect and Dendrite Growth in Lithium-Sulfur Batteries. ACS Nano 2020; 14:9819-9831. [PMID: 32634303 DOI: 10.1021/acsnano.0c02241] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Practical applications of lithium-sulfur batteries are simultaneously hindered by two serious problems occurring separately in both electrodes, namely, the shuttle effects of lithium polysulfides and the uncontrollable growth of lithium dendrites. Herein, to explore a facile integrated approach to tackle both problems as well as guarantee the efficient charge transfer, we used two-dimension hexagonal VS2 flakes as the building blocks to assemble nanotowers on the separators, forming a symmetrical double-side-modified polypropylene separator without blocking the membrane pores. Benefiting from the "sulfiphilic" and "lithiophilic" properties, high interfacial electronic conductivity, and the unique hexagonal tower-form nanostructure, the D-HVS@PP separator not only guarantees the effective suppression of the lithium polysulfide shuttle and the rapid ion/electron transfer but also realizes uniform and stable lithium nucleation and growth during cycling. Hence, just at the expense of an 11% increase in the separator weight (0.14 mg cm-2), the D-HVS@PP separator delivers an over 16 times higher initial areal capacity (8.3 mAh cm-2) than a conventional PP separator (0.5 mAh cm-2) under high sulfur-loading conditions (9.24 mg cm-2). Even when used under a low electrolyte/sulfur ratio of 4 mL g-1 and a practically relevant N/P ratio of 1.7, the D-HVS@PP separator still enabled stable cycling with a high cell-level gravimetric energy density. The potentials in broader applications (Li-S pouch battery and Li-LiFePO4 battery) and the promising commercial prospect (large-scale production and recyclability) of the developed separator are also demonstrated.
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Affiliation(s)
- Jianan Wang
- Department of Environmental Science and Engineering, Department of Applied Chemistry, School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
- Xi'an Jiaotong University & Shaanxi Quantong Joint Research Institute of New Energy Vehicles Power, Xi'an 710049, China
| | - Shanshan Yi
- Department of Environmental Science and Engineering, Department of Applied Chemistry, School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jianwei Liu
- Department of Environmental Science and Engineering, Department of Applied Chemistry, School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
| | - Shiyi Sun
- Department of Environmental Science and Engineering, Department of Applied Chemistry, School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yunpeng Liu
- Department of Environmental Science and Engineering, Department of Applied Chemistry, School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
| | - Duowen Yang
- Department of Environmental Science and Engineering, Department of Applied Chemistry, School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
| | - Kai Xi
- Department of Engineering, University of Cambridge, Cambridge, CB3 0FA, United Kingdom
- Department of Materials Science and Metallurgy, University of Cambridge,, Cambridge, CB3 0FS, United Kingdom
| | - Guoxin Gao
- Department of Environmental Science and Engineering, Department of Applied Chemistry, School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
- Xi'an Jiaotong University & Shaanxi Quantong Joint Research Institute of New Energy Vehicles Power, Xi'an 710049, China
| | - Amr Abdelkader
- Faculty of Science and Technology, Bournemouth University, Talbot Campus, Fern Barrow, Poole, BH12 5BB, United Kingdom
| | - Wei Yan
- Department of Environmental Science and Engineering, Department of Applied Chemistry, School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
- Xi'an Jiaotong University & Shaanxi Quantong Joint Research Institute of New Energy Vehicles Power, Xi'an 710049, China
| | - Shujiang Ding
- Department of Environmental Science and Engineering, Department of Applied Chemistry, School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China
- Xi'an Jiaotong University & Shaanxi Quantong Joint Research Institute of New Energy Vehicles Power, Xi'an 710049, China
| | - Ramachandran Vasant Kumar
- Department of Materials Science and Metallurgy, University of Cambridge,, Cambridge, CB3 0FS, United Kingdom
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Harrison A, P Zeevi M, L Vasey C, D Nguyen M, Tang C. Accelerated Reaction Rates within Self-Assembled Polymer Nanoreactors with Tunable Hydrophobic Microenvironments. Polymers (Basel) 2020; 12:E1774. [PMID: 32784742 DOI: 10.3390/polym12081774] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/04/2020] [Accepted: 08/04/2020] [Indexed: 12/04/2022] Open
Abstract
Performing reactions in the presence of self-assembled hierarchical structures of amphiphilic macromolecules can accelerate reactions while using water as the bulk solvent due to the hydrophobic effect. We leveraged non-covalent interactions to self-assemble filled-polymer micelle nanoreactors (NR) incorporating gold nanoparticle catalysts into various amphiphilic polymer nanostructures with comparable hydrodynamic nanoreactor size and gold concentration in the nanoreactor dispersion. We systematically studied the effect of the hydrophobic co-precipitant on self-assembly and catalytic performance. We observed that co-precipitants that interact with gold are beneficial for improving incorporation efficiency of the gold nanoparticles into the nanocomposite nanoreactor during self-assembly but decrease catalytic performance. Hierarchical assemblies with co-precipitants that leverage noncovalent interactions could enhance catalytic performance. For the co-precipitants that do not interact strongly with gold, the catalytic performance was strongly affected by the hydrophobic microenvironment of the co-precipitant. Specifically, the apparent reaction rate per surface area using castor oil (CO) was over 8-fold greater than polystyrene (750 g/mol, PS 750); the turnover frequency was higher than previously reported self-assembled polymer systems. The increase in apparent catalytic performance could be attributed to differences in reactant solubility rather than differences in mass transfer or intrinsic kinetics; higher reactant solubility enhances apparent reaction rates. Full conversion of 4-nitrophenol was achieved within three minutes for at least 10 sequential reactions demonstrating that the nanoreactors could be used for multiple reactions.
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Haney B, Werner JG, Weitz DA, Ramakrishnan S. Absorbent-Adsorbates: Large Amphiphilic Janus Microgels as Droplet Stabilizers. ACS Appl Mater Interfaces 2020; 12:33439-33446. [PMID: 32598144 DOI: 10.1021/acsami.0c11408] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Microgel particles are cross-linked polymer networks that absorb certain liquids causing network expansion. The type of swelling fluid and extent of volume change depends on the polymer-liquid interaction and the network's cross-link density. These colloidal gels can be used to stabilize emulsion drops by adsorbing to the interface of two immiscible fluids. However, to enhance the adsorption abilities of these predominantly hydrophilic gel particles, some degree of hydrophobicity is needed. An amphiphilic Janus microgel with spatially distinct lipophilic and hydrophilic sides is desired. Here, we report the fabrication of poly(ethylene glycol) diacrylate/poly(propylene glycol) diacrylate Janus microgels (JM) using microfluidic drop making. The flow streams of the two separate and immiscible monomer solutions are brought into contact and intersected by a third immiscible fluid in a flow-focusing junction to form Janus droplets. The individual droplets are cross-linked via UV irradiation to form monodispersed microgel particles with opposing hydrophilic and hydrophobic 3D-networked polymer matrices. By combining two chemically different polymer gel networks, an amphiphilic emulsion stabilizer is formed that adsorbs to the oil-water interface while its faces absorb their respective water or hydrocarbon solvents. The resulting water-in-oil emulsions are stabilized and destabilized via a thermal-responsive hydrogel. Stimuli-responsive droplets are demonstrated by adding a short-chain oligo ethylene glycol acrylate molecule to the hydrogel formulation on the Janus microgel particle. Droplets stabilized by these particles experience a sudden increase in droplet diameter around 60 °C. This work with absorbent particles may prove useful for applications in bio catalysis, fuel production, and oil transportation.
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Affiliation(s)
- Bobby Haney
- Department of Chemical and Biomedical Engineering, FAMU-FSU Engineering, Tallahassee, Florida 32310, United States
| | - Jörg G Werner
- Department of Mechanical Engineering and Division of Materials Science and Engineering, Boston University, Boston, Massachusetts 02215, United States
| | | | - Subramanian Ramakrishnan
- Department of Chemical and Biomedical Engineering, FAMU-FSU Engineering, Tallahassee, Florida 32310, United States
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Vilariño-Feltrer G, Salgado-Gallegos A, de-la-Concepción-Ausina J, Rodríguez-Hernández JC, Shahrousvand M, Vallés-Lluch A. Amphipathic Substrates Based on Crosslinker-Free Poly(ε-Caprolactone):Poly(2-Hydroxyethyl Methacrylate) Semi-Interpenetrated Networks Promote Serum Protein Adsorption. Polymers (Basel) 2020; 12:polym12061256. [PMID: 32486185 PMCID: PMC7361809 DOI: 10.3390/polym12061256] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/26/2020] [Accepted: 05/29/2020] [Indexed: 11/19/2022] Open
Abstract
A simple procedure has been developed to synthesize uncrosslinked soluble poly(hydroxyethyl methacrylate) (PHEMA) gels, ready for use in a subsequent fabrication stage. The presence of 75 wt % methanol (MetOH) or dimethylformamide (DMF) impedes lateral hydroxyl–hydroxyl hydrogen bonds between PHEMA macromers to form during their solution polymerization at 60 °C, up to 24 h. These gels remain soluble when properly stored in closed containers under cold conditions and, when needed, yield by solvent evaporation spontaneous physically-crosslinked PHEMA adapted to the mould used. Moreover, this two-step procedure allows obtaining multicomponent systems where a stable and water-affine PHEMA network would be of interest. In particular, amphiphilic polycaprolactone (PCL):PHEMA semi-interpenetrated (sIPN) substrates have been developed, from quaternary metastable solutions in chloroform (CHCl3):MetOH 3:1 wt. and PCL ranging from 50 to 90 wt % in the polymer fraction (thus determining the composition of the solution). The coexistence of these countered molecules, uniformly distributed at the nanoscale, has proven to enhance the number and interactions of serum protein adsorbed from the acellular medium as compared to the homopolymers, the sIPN containing 80 wt % PCL showing an outstanding development. In accordance to the quaternary diagram presented, this protocol can be adapted for the development of polymer substrates, coatings or scaffolds for biomedical applications, not relying upon phase separation, such as the electrospun mats here proposed herein (12 wt % polymer solutions were used for this purpose, with PCL ranging from 50% to 100% in the polymer fraction).
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Affiliation(s)
- Guillermo Vilariño-Feltrer
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 Valencia, Spain
| | - Alfredo Salgado-Gallegos
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 Valencia, Spain
| | | | | | - Mohsen Shahrousvand
- Caspian Faculty of Engineering, College of Engineering, University of Tehran, P.O. Box 119-43841 Rezvanshahr, Iran
| | - Ana Vallés-Lluch
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, 46022 Valencia, Spain
- Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 46022 Valencia, Spain
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45
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Moraes RM, Carvalho LT, Alves GM, Medeiros SF, Bourgeat-Lami E, Santos AM. Synthesis and Self-Assembly of Poly( N-Vinylcaprolactam)- b-Poly(ε-Caprolactone) Block Copolymers via the Combination of RAFT/MADIX and Ring-Opening Polymerizations. Polymers (Basel) 2020; 12:polym12061252. [PMID: 32486145 PMCID: PMC7362203 DOI: 10.3390/polym12061252] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/25/2020] [Accepted: 05/28/2020] [Indexed: 02/06/2023] Open
Abstract
Well-defined amphiphilic, biocompatible and partially biodegradable, thermo-responsive poly(N-vinylcaprolactam)-b-poly(ε-caprolactone) (PNVCL-b-PCL) block copolymers were synthesized by combining reversible addition-fragmentation chain transfer (RAFT) and ring-opening polymerizations (ROP). Poly(N-vinylcaprolactam) containing xanthate and hydroxyl end groups (X–PNVCL–OH) was first synthesized by RAFT/macromolecular design by the interchange of xanthates (RAFT/MADIX) polymerization of NVCL mediated by a chain transfer agent containing a hydroxyl function. The xanthate-end group was then removed from PNVCL by a radical-induced process. Finally, the hydroxyl end-capped PNVCL homopolymer was used as a macroinitiator in the ROP of ε-caprolactone (ε-CL) to obtain PNVCL-b-PCL block copolymers. These (co)polymers were characterized by Size Exclusion Chromatography (SEC), Fourier-Transform Infrared spectroscopy (FTIR), Proton Nuclear Magnetic Resonance spectroscopy (1H NMR), UV–vis and Differential Scanning Calorimetry (DSC) measurements. The critical micelle concentration (CMC) of the block copolymers in aqueous solution measured by the fluorescence probe technique decreased with increasing the length of the hydrophobic block. However, dynamic light scattering (DLS) demonstrated that the size of the micelles increased with increasing the proportion of hydrophobic segments. The morphology observed by cryo-TEM demonstrated that the micelles have a pointed-oval-shape. UV–vis and DLS analyses showed that these block copolymers have a temperature-responsive behavior with a lower critical solution temperature (LCST) that could be tuned by varying the block copolymer composition.
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Affiliation(s)
- Rodolfo M. Moraes
- Laboratory of Polymers, Department of Chemical Engineering, Engineering School of Lorena, University of São Paulo, EEL-USP, Estrada Municipal do Campinho, s/n, P.O. Box 116, Lorena SP 12602-810, Brazil; (R.M.M.); (L.T.C.); (G.M.A.); (S.F.M.)
| | - Layde T. Carvalho
- Laboratory of Polymers, Department of Chemical Engineering, Engineering School of Lorena, University of São Paulo, EEL-USP, Estrada Municipal do Campinho, s/n, P.O. Box 116, Lorena SP 12602-810, Brazil; (R.M.M.); (L.T.C.); (G.M.A.); (S.F.M.)
| | - Gizelda M. Alves
- Laboratory of Polymers, Department of Chemical Engineering, Engineering School of Lorena, University of São Paulo, EEL-USP, Estrada Municipal do Campinho, s/n, P.O. Box 116, Lorena SP 12602-810, Brazil; (R.M.M.); (L.T.C.); (G.M.A.); (S.F.M.)
| | - Simone F. Medeiros
- Laboratory of Polymers, Department of Chemical Engineering, Engineering School of Lorena, University of São Paulo, EEL-USP, Estrada Municipal do Campinho, s/n, P.O. Box 116, Lorena SP 12602-810, Brazil; (R.M.M.); (L.T.C.); (G.M.A.); (S.F.M.)
| | - Elodie Bourgeat-Lami
- Univ Lyon, Université Claude Bernard Lyon 1, CPE Lyon, CNRS UMR 5265, Chemistry, Catalysis, Polymers and Processes (C2P2), 43 Bvd. du 11 Novembre 1918, F-69616 Villeurbanne, France
- Correspondence: (E.B.-L.); (A.M.S.)
| | - Amilton M. Santos
- Laboratory of Polymers, Department of Chemical Engineering, Engineering School of Lorena, University of São Paulo, EEL-USP, Estrada Municipal do Campinho, s/n, P.O. Box 116, Lorena SP 12602-810, Brazil; (R.M.M.); (L.T.C.); (G.M.A.); (S.F.M.)
- Correspondence: (E.B.-L.); (A.M.S.)
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Murjan S, Saeedi S, Nabid MR. Comparison between novel star-like redox-sensitive amphiphilic block copolymer and its linear counterpart copolymer as nanocarriers for doxorubicin. Drug Dev Ind Pharm 2020; 46:646-658. [PMID: 32208035 DOI: 10.1080/03639045.2020.1742147] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Linear and star-like redox-sensitive amphiphilic block copolymers have been studied as anticancer drug delivery systems. However, few reports directly compared the properties of those two structures especially when they are used as nanocarriers for antitumor drugs. To address this, a novel star-like copolymer and its linear counterpart were synthesized with a hydrophobic/redox-responsive/hydrophilic structure. The overall molecular weight of the star-shaped copolymer was nearly equal to that of the linear counterpart. The star-like micelles exhibit size of 90 nm, which was smaller than that of linear copolymers (151.6 nm) and critical micelle concentration of 1 mg/L, which was lower than that of the linear micelles (8.9 mg/L). The disassembly behaviors and the redox-sensitivity of the nanoparticles to reductive stimuli of glutathione was evaluated from the changes of the micellar size and morphology. Furthermore, doxorubicin was physically loaded into the hydrophobic part of the copolymers. The drug-loading capacities in the star-like and linear micelles were 15.94 and 7.53 wt%, respectively. Drug release studies carried out at two different glutathione concentrations. A cytotoxicity study of the micelles was performed by MTT assay. The prepared star copolymer showed no significant toxicity against HDF cells while enhanced cytotoxicity of the DOX-loaded micelles against MCF-7 cells was observed. Therefore, developing sucrose-PCL-SS-PEG copolymer reported in this paper as an effective reduction-responsive carrier with excellent properties and cell biocompatibility is promising for the efficient intracellular delivery of hydrophobic chemotherapeutic drugs. This work also indicates that modification of the nanocarrier structure is a potential strategy for optimizing drug delivery.
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Affiliation(s)
- Samar Murjan
- Department of Polymer and Materials Chemistry, Faculty of Chemistry & Petroleum Sciences, Shahid Beheshti University, Tehran, Iran
| | - Sara Saeedi
- Department of Polymer and Materials Chemistry, Faculty of Chemistry & Petroleum Sciences, Shahid Beheshti University, Tehran, Iran
| | - Mohammad Reza Nabid
- Department of Polymer and Materials Chemistry, Faculty of Chemistry & Petroleum Sciences, Shahid Beheshti University, Tehran, Iran
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Paternò GM, Colombo E, Vurro V, Lodola F, Cimò S, Sesti V, Molotokaite E, Bramini M, Ganzer L, Fazzi D, D'Andrea C, Benfenati F, Bertarelli C, Lanzani G. Membrane Environment Enables Ultrafast Isomerization of Amphiphilic Azobenzene. Adv Sci (Weinh) 2020; 7:1903241. [PMID: 32328424 PMCID: PMC7175258 DOI: 10.1002/advs.201903241] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 01/24/2020] [Indexed: 05/18/2023]
Abstract
The non-covalent affinity of photoresponsive molecules to biotargets represents an attractive tool for achieving effective cell photo-stimulation. Here, an amphiphilic azobenzene that preferentially dwells within the plasma membrane is studied. In particular, its isomerization dynamics in different media is investigated. It is found that in molecular aggregates formed in water, the isomerization reaction is hindered, while radiative deactivation is favored. However, once protected by a lipid shell, the photochromic molecule reacquires its ultrafast photoisomerization capacity. This behavior is explained considering collective excited states that may form in aggregates, locking the conformational dynamics and redistributing the oscillator strength. By applying the pump probe technique in different media, an isomerization time in the order of 10 ps is identified and the deactivation in the aggregate in water is also characterized. Finally, it is demonstrated that the reversible modulation of membrane potential of HEK293 cells via illumination with visible light can be indeed related to the recovered trans→cis photoreaction in lipid membrane. These data fully account for the recently reported experiments in neurons, showing that the amphiphilic azobenzenes, once partitioned in the cell membrane, are effective light actuators for the modification of the electrical state of the membrane.
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Affiliation(s)
- Giuseppe Maria Paternò
- Center for Nano Science and TechnologyIstituto Italiano di TecnologiaVia Pascoli 70/320133MilanoItaly
| | - Elisabetta Colombo
- Center for Synaptic Neuroscience and TechnologyIstituto Italiano di TecnologiaLargo Rosanna Benzi 1016132GenovaItaly
- IRCCS Ospedale Policlinico San MartinoLargo Rosanna Benzi 1016132GenovaItaly
| | - Vito Vurro
- Center for Nano Science and TechnologyIstituto Italiano di TecnologiaVia Pascoli 70/320133MilanoItaly
- Dipartimento di FisicaPolitecnico di MilanoPiazza L. da Vinci 3220133MilanoItaly
| | - Francesco Lodola
- Center for Nano Science and TechnologyIstituto Italiano di TecnologiaVia Pascoli 70/320133MilanoItaly
| | - Simone Cimò
- Dipartimento di ChimicaMateriali e Ingegneria Chimica “Giulio Natta”Politecnico di MilanoPiazza L. da Vinci 3220133MilanoItaly
| | - Valentina Sesti
- Dipartimento di ChimicaMateriali e Ingegneria Chimica “Giulio Natta”Politecnico di MilanoPiazza L. da Vinci 3220133MilanoItaly
| | - Egle Molotokaite
- Center for Nano Science and TechnologyIstituto Italiano di TecnologiaVia Pascoli 70/320133MilanoItaly
| | - Mattia Bramini
- Center for Synaptic Neuroscience and TechnologyIstituto Italiano di TecnologiaLargo Rosanna Benzi 1016132GenovaItaly
- IRCCS Ospedale Policlinico San MartinoLargo Rosanna Benzi 1016132GenovaItaly
- Department of Applied PhysicsFaculty of SciencesUniversity of GranadaC/Fuentenueva s/n18071GranadaSpain
| | - Lucia Ganzer
- Dipartimento di FisicaPolitecnico di MilanoPiazza L. da Vinci 3220133MilanoItaly
| | - Daniele Fazzi
- Department of ChemistryInstitut für Physikalische ChemieUniversity of CologneLuxemburger Str. 116D‐50939KölnGermany
| | - Cosimo D'Andrea
- Center for Nano Science and TechnologyIstituto Italiano di TecnologiaVia Pascoli 70/320133MilanoItaly
- Dipartimento di FisicaPolitecnico di MilanoPiazza L. da Vinci 3220133MilanoItaly
| | - Fabio Benfenati
- Center for Synaptic Neuroscience and TechnologyIstituto Italiano di TecnologiaLargo Rosanna Benzi 1016132GenovaItaly
- IRCCS Ospedale Policlinico San MartinoLargo Rosanna Benzi 1016132GenovaItaly
| | - Chiara Bertarelli
- Dipartimento di ChimicaMateriali e Ingegneria Chimica “Giulio Natta”Politecnico di MilanoPiazza L. da Vinci 3220133MilanoItaly
| | - Guglielmo Lanzani
- Center for Nano Science and TechnologyIstituto Italiano di TecnologiaVia Pascoli 70/320133MilanoItaly
- Dipartimento di FisicaPolitecnico di MilanoPiazza L. da Vinci 3220133MilanoItaly
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48
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Lu Y, Chan YK, Lau LH, Wong D, Wong JKW, Shih KC, Lai SM, Shum HC. Amphiphilic additives in silicone oil tamponade and emulsification: an eye-on-a-chip study. Acta Ophthalmol 2020; 98:e232-e237. [PMID: 31386804 DOI: 10.1111/aos.14212] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 07/10/2019] [Indexed: 12/26/2022]
Abstract
AIMS Recently, chemically modified silicone oil has been demonstrated as a reservoir for sustained release of intraocular drugs, many of which might be amphiphilic in nature. In this work, we study the effect of amphiphilic additives in silicone oil on emulsification under eye-like movements. METHODS Three silicone-oil-soluble surfactants, namely DC749, MQ1640 and FZ2233, were used as model amphiphilic additives. The change of viscosity was measured by a rheometer in the cone-and-plate geometry. The interfacial tension (IFT) between silicone oil and model aqueous phase was measured by pendant drop tensiometry. Emulsification of silicone oil was induced by simulated saccadic eye movements on a cell-coated eye-on-a-chip platform for 4 days. The number of emulsified silicone oil droplets observed in the aqueous phase was assessed daily by optical microscopy. RESULTS Significantly more emulsified droplets were formed in silicone oil with DC749 or MQ1640 (P < 0.05). However, such increase was not directly related to the change in IFT nor viscosity. Moreover, water droplets were also found in the silicone oil, but not in the control silicone oil without additive. CONCLUSIONS The amphiphilic substances in silicone oil promoted emulsification. Besides typical oil-in-water drops that normally affect the eye, water-in-oil drops were also formed. Before silicone oil could be considered as a vehicle for drug delivery, the nature of the drug and its possible effect on emulsification and therefore on the pharmacokinetics needs to be investigated. An additional concern is that water-in-oil droplets in the eye would affect the optical clarity of silicone oil and might cause visual symptoms.
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Affiliation(s)
- Yongjie Lu
- Department of Mechanical Engineering University of Hong Kong Hong Kong Hong Kong
| | - Yau Kei Chan
- Department of Ophthalmology University of Hong Kong Hong Kong Hong Kong
| | - Long Hei Lau
- Department of Mechanical Engineering University of Hong Kong Hong Kong Hong Kong
| | - David Wong
- Department of Eye and Vision Science University of Liverpool Liverpool UK
| | | | - Kendrick Co Shih
- Department of Ophthalmology University of Hong Kong Hong Kong Hong Kong
| | - Shiu Ming Lai
- Department of Ophthalmology University of Hong Kong Hong Kong Hong Kong
| | - Ho Cheung Shum
- Department of Mechanical Engineering University of Hong Kong Hong Kong Hong Kong
- HKU‐Shenzhen Institute of Research and Innovation (HKU‐SIRI) Shenzhen China
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Abstract
Condensation heat transfer can be altered significantly by changing the texture and material of a surface to promote droplet removal and therefore lower thermal resistance. These designs are often expensive and fragile, however, and are fabricated using micro- or nanoscale features that are not easily implemented in real-world systems. Here, we present a novel macromachined amphiphilic surface that promotes droplet removal and resists permanent flooding via a spontaneous dewetting transition. While much of the research in condensation involves condensing on surfaces that are fully or mostly hydrophobic, droplets on the surface presented here nucleate and grow inside the structure on a hydrophilic material. The absence of any coating between the liquid and the conductive surface has the benefits of both decreasing thermal resistance and enhancing nucleation density. When the liquid grows to a critical size inside the channel, its elongated shape becomes unstable and spontaneously dewets to form rounded droplets on the hydrophobic fin peaks. The removal of liquid from the channels promotes new growth on the bare hydrophilic material, while the emerged rounded droplets can more easily shed from the hydrophobic fins. The dewetting phenomenon is shown experimentally and characterized analytically such that a desired critical water slug length could be designed by changing geometric parameters of the surface structure. The macroscale machined surface is also more durable than typical nanofabricated surfaces and easier to manufacture, making the surface more applicable to use in real-world systems. Spontaneous condensate dewetting on the amphiphilic structure is expected to enhance the study of inhibiting flooding on condensing surfaces and provide new pathways for droplet shedding techniques without a requirement for nanothin hydrophobic coatings.
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Affiliation(s)
- Rebecca L Winter
- Department of Mechanical Engineering and Mechanics , Drexel University , 3141 Chestnut Street , Philadelphia , Pennsylvania 19063 , United States
| | - Matthew McCarthy
- Department of Mechanical Engineering and Mechanics , Drexel University , 3141 Chestnut Street , Philadelphia , Pennsylvania 19063 , United States
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Revuelta-Maza MÁ, Mascaraque M, González-Jiménez P, González-Camuñas A, Nonell S, Juarranz Á, de la Torre G, Torres T. Assessing Amphiphilic ABAB Zn(II) Phthalocyanines with Enhanced Photosensitization Abilities in In Vitro Photodynamic Therapy Studies Against Cancer. Molecules 2020; 25:E213. [PMID: 31947934 DOI: 10.3390/molecules25010213] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 12/23/2019] [Accepted: 12/28/2019] [Indexed: 12/18/2022] Open
Abstract
We have previously demonstrated that singlet oxygen photosensitization abilities of Zn(II) phthalocyanines (Zn(II)Pcs) are enhanced through α-functionalization with bulky fluorinated substituents (i.e., bis(trifluoromethyl)phenyl units) at facing positions of ABAB Zn(II)Pcs, where A and B refer to differently functionalized isoindoles. In this work, we have prepared the Zn(II)Pc ABAB 1 endowed with hydrophilic triethylene glycol monomethyl ether (i.e., at the A isoindoles) to provide solubility in aqueous media, together with its A3B and A4 counterparts, and compared their ability to behave as photosensitizers for photodynamic therapy. All photophysical data, aggregation studies and preliminary in vitro biological assays in cell cultures of SCC-13 (squamous cell carcinoma) and HeLa (cervical cancer cells), have proved ABAB 1 as the best photosensitizer of the series.
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