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Zhang F, Yao Q, Niu Y, Chen X, Zhou H, Bai L, Kong Z, Li Y, Cheng H. In Situ Fabrication of Silver Nanoparticle-Decorated Polymeric Vesicles for Antibacterial Applications. ChemistryOpen 2024; 13:e202300223. [PMID: 38647351 PMCID: PMC11095202 DOI: 10.1002/open.202300223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 03/05/2024] [Indexed: 04/25/2024] Open
Abstract
Silver/polymeric vesicle composite nanoparticles with good antibacterial properties were fabricated in this study. Silver nanoparticles (AgNPs) were prepared in situ on cross-linked vesicle membranes through the reduction of silver nitrate (AgNO3) using polyvinylpyrrolidone (PVP) via coordination bonding between the Ag+ ions and the nitrogen atoms on the vesicles. X-ray diffraction (XRD), ultraviolet-visible spectroscopy (UV-vis), and transmission electron microscopy (TEM) analyses confirmed the formation of AgNPs on the vesicles. The antibacterial test demonstrated good antibacterial activity against both Gram-negative bacteria (Escherichia coli) and Gram-positive bacteria (Staphylococcus aureus) for the produced AgNP-decorated vesicles. The minimum inhibitory concentration (MIC) values of the AgNP-decorated vesicles for E. coli and S. aureus were 8.4 and 9.6 μg/mL, respectively. Cell viability analysis on the A549 cells indicated that the toxicity was low when the AgNP concentrations did not exceed the MIC values, and the wound healing test confirmed the good antibacterial properties of the AgNP-decorated vesicles.
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Affiliation(s)
- Fen Zhang
- Institute of Energy ResourcesHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Qian Yao
- Institute of Energy ResourcesHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Yanling Niu
- Institute of Energy ResourcesHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Xiaoqi Chen
- Institute of Energy ResourcesHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Haijun Zhou
- Institute of Energy ResourcesHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Lu Bai
- Institute of Energy ResourcesHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Zejuan Kong
- Institute of BiologyHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Yantao Li
- Institute of Energy ResourcesHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
| | - Hua Cheng
- Institute of BiologyHebei Academy of Sciences050081ShijiazhuangHebei ProvinceChina
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Fonseca M, Jarak I, Victor F, Domingues C, Veiga F, Figueiras A. Polymersomes as the Next Attractive Generation of Drug Delivery Systems: Definition, Synthesis and Applications. MATERIALS (BASEL, SWITZERLAND) 2024; 17:319. [PMID: 38255485 PMCID: PMC10817611 DOI: 10.3390/ma17020319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/23/2023] [Accepted: 12/25/2023] [Indexed: 01/24/2024]
Abstract
Polymersomes are artificial nanoparticles formed by the self-assembly process of amphiphilic block copolymers composed of hydrophobic and hydrophilic blocks. They can encapsulate hydrophilic molecules in the aqueous core and hydrophobic molecules within the membrane. The composition of block copolymers can be tuned, enabling control of characteristics and properties of formed polymersomes and, thus, their application in areas such as drug delivery, diagnostics, or bioimaging. The preparation methods of polymersomes can also impact their characteristics and the preservation of the encapsulated drugs. Many methods have been described, including direct hydration, thin film hydration, electroporation, the pH-switch method, solvent shift method, single and double emulsion method, flash nanoprecipitation, and microfluidic synthesis. Considering polymersome structure and composition, there are several types of polymersomes including theranostic polymersomes, polymersomes decorated with targeting ligands for selective delivery, stimuli-responsive polymersomes, or porous polymersomes with multiple promising applications. Due to the shortcomings related to the stability, efficacy, and safety of some therapeutics in the human body, polymersomes as drug delivery systems have been good candidates to improve the quality of therapies against a wide range of diseases, including cancer. Chemotherapy and immunotherapy can be improved by using polymersomes to deliver the drugs, protecting and directing them to the exact site of action. Moreover, this approach is also promising for targeted delivery of biologics since they represent a class of drugs with poor stability and high susceptibility to in vivo clearance. However, the lack of a well-defined regulatory plan for polymersome formulations has hampered their follow-up to clinical trials and subsequent market entry.
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Affiliation(s)
- Mariana Fonseca
- Univ. Coimbra, Laboratory of Drug Development and Technologies, Faculty of Pharmacy, 3000-548 Coimbra, Portugal; (M.F.); (I.J.); (C.D.); (F.V.)
| | - Ivana Jarak
- Univ. Coimbra, Laboratory of Drug Development and Technologies, Faculty of Pharmacy, 3000-548 Coimbra, Portugal; (M.F.); (I.J.); (C.D.); (F.V.)
- Instituto de Investigação e Inovação em Saúde, University of Porto, 4200-135 Porto, Portugal
| | - Francis Victor
- Department of Pharmacy, University Chenab Gujarat, Punjab 50700, Pakistan;
| | - Cátia Domingues
- Univ. Coimbra, Laboratory of Drug Development and Technologies, Faculty of Pharmacy, 3000-548 Coimbra, Portugal; (M.F.); (I.J.); (C.D.); (F.V.)
- Univ. Coimbra, REQUIMTE/LAQV, Group of Pharmaceutical Technology, 3000-548 Coimbra, Portugal
- Univ. Coimbra, Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, 3000-548 Coimbra, Portugal
| | - Francisco Veiga
- Univ. Coimbra, Laboratory of Drug Development and Technologies, Faculty of Pharmacy, 3000-548 Coimbra, Portugal; (M.F.); (I.J.); (C.D.); (F.V.)
- Univ. Coimbra, REQUIMTE/LAQV, Group of Pharmaceutical Technology, 3000-548 Coimbra, Portugal
| | - Ana Figueiras
- Univ. Coimbra, Laboratory of Drug Development and Technologies, Faculty of Pharmacy, 3000-548 Coimbra, Portugal; (M.F.); (I.J.); (C.D.); (F.V.)
- Univ. Coimbra, REQUIMTE/LAQV, Group of Pharmaceutical Technology, 3000-548 Coimbra, Portugal
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Sun Q, Gong J, Sun Y, Song Y, Liu C, Xu B. The Spontaneous Vesicle-Micelle Transition in a Catanionic Surfactant System: A Chemical Trapping Study. Molecules 2023; 28:6062. [PMID: 37630313 PMCID: PMC10457922 DOI: 10.3390/molecules28166062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/10/2023] [Accepted: 08/12/2023] [Indexed: 08/27/2023] Open
Abstract
Typically, the formation of vesicles requires the addition of salts or other additives to surfactant micelles. However, in the case of catanionic surfactants, unilamellar vesicles can spontaneously form upon dilution of the micellar solutions. Our study explores the intriguing spontaneous vesicle-to-micelle transition in catanionic surfactant systems, specifically cetyltrimethyl ammonium bromide (CTAB) and sodium octylsulfonate (SOS). To gain insights into the changes occurring at the interface, we employ a chemical trapping method to characterize variations in the molarities of sulfonate headgroups, water, and bromide ions during the transition. Our findings reveal the formation of ion pairs between the cationic component of CTAB and the anionic component of SOS, leading to tight interfacial packing in CTAB/SOS solutions. This interfacial packing promotes vesicle formation at low surfactant concentrations. Due to the significant difference in critical micelle concentration (cmc) between CTAB and SOS, an increase in the stoichiometric surfactant concentration results in a substantial rise in the SOS-to-CTAB ratio within the interfacial region. This enrichment of SOS in the aggregates triggers the transition from vesicles to micelles. Overall, our study may shed new light on the design of morphologies in catanionic and other surfactant systems.
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Affiliation(s)
| | | | | | | | - Changyao Liu
- Department of Daily Chemical Engineering, Beijing Technology and Business University, No. 11 Fucheng Road, Beijing 100048, China; (Q.S.); (J.G.); (Y.S.); (Y.S.); (B.X.)
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