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Nunes B, Cagide F, Fernandes C, Borges A, Borges F, Simões M. Efficacy of Novel Quaternary Ammonium and Phosphonium Salts Differing in Cation Type and Alkyl Chain Length against Antibiotic-Resistant Staphylococcus aureus. Int J Mol Sci 2023; 25:504. [PMID: 38203676 PMCID: PMC10778626 DOI: 10.3390/ijms25010504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/22/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024] Open
Abstract
Antibacterial resistance poses a critical public health threat, challenging the prevention and treatment of bacterial infections. The search for innovative antibacterial agents has spurred significant interest in quaternary heteronium salts (QHSs), such as quaternary ammonium and phosphonium compounds as potential candidates. In this study, a library of 49 structurally related QHSs was synthesized, varying the cation type and alkyl chain length. Their antibacterial activities against Staphylococcus aureus, including antibiotic-resistant strains, were evaluated by determining minimum inhibitory/bactericidal concentrations (MIC/MBC) ≤ 64 µg/mL. Structure-activity relationship analyses highlighted alkyl-triphenylphosphonium and alkyl-methylimidazolium salts as the most effective against S. aureus CECT 976. The length of the alkyl side chain significantly influenced the antibacterial activity, with optimal chain lengths observed between C10 and C14. Dose-response relationships were assessed for selected QHSs, showing dose-dependent antibacterial activity following a non-linear pattern. Survival curves indicated effective eradication of S. aureus CECT 976 by QHSs at low concentrations, particularly compounds 1e, 3e, and 5e. Moreover, in vitro human cellular data indicated that compounds 2e, 4e, and 5e showed favourable safety profiles at concentrations ≤ 2 µg/mL. These findings highlight the potential of these QHSs as effective agents against susceptible and resistant bacterial strains, providing valuable insights for the rational design of bioactive QHSs.
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Affiliation(s)
- Bárbara Nunes
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal; (B.N.); (A.B.)
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- CIQUP-IMS, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal (C.F.); (F.B.)
| | - Fernando Cagide
- CIQUP-IMS, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal (C.F.); (F.B.)
| | - Carlos Fernandes
- CIQUP-IMS, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal (C.F.); (F.B.)
| | - Anabela Borges
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal; (B.N.); (A.B.)
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Fernanda Borges
- CIQUP-IMS, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal (C.F.); (F.B.)
| | - Manuel Simões
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal; (B.N.); (A.B.)
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
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Halima HB, Zwingelstein T, Humblot V, Lakard B, Viau L. Electropolymerization of Pyrrole-Tailed Imidazolium Ionic Liquid for the Elaboration of Antibacterial Surfaces. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37421359 DOI: 10.1021/acsami.3c05232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2023]
Abstract
A strategy was developed to prepare antibacterial surfaces by electropolymerization of a pyrrole-functionalized imidazolium ionic liquid bearing an halometallate anion. The objective was to combine the antibacterial efficiency of polypyrrole (PPy) with those of the ionic liquid's components (cation and anion). For this, N-(1-methyl-3-octylimidazolium)pyrrole bromide monomer [PyC8MIm]Br was synthesized and coordinated to ZnCl2 affording [PyC8MIm]Br-ZnCl2. The antibacterial properties of [PyC8MIm]Br-ZnCl2 monomer were evaluated against Escherichia coli and Staphylococcus aureus by measurement of the minimum inhibitory concentration (MIC) values. This monomer presents higher activity against S. aureus (MIC = 0.098 μmol·mL-1) than against E. coli (MIC = 2.10 μmol·mL-1). Mixtures of pyrrole and the pyrrole-functionalized ionic liquid [PyC8MIm]Br-ZnCl2 were then used for the electrodeposition of PPy films on Fluorine-doped tin oxide (FTO) substrates. The concentration of pyrrole was fixed to 50 mM, while the concentration of [PyC8MIm]Br-ZnCl2 was varied from 5 to 100 mM. The efficient incorporation of the imidazolium cation and zinc halometallate anion into the films was confirmed by X-ray photoelectron spectroscopy (XPS) measurements. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) measurements confirmed the homogeneity of the different films with structures that depend on the [PyC8MIm]Br-ZnCl2 concentration. The films' thickness determined by profilometry varies only slightly with the [PyC8MIm]Br-ZnCl2 concentration from 7.4 μm at 5 mM to 8.9 μM at 100 mM. The films become more hydrophilic with an increase of [PyC8MIm]Br-ZnCl2 concentration with water contact angles varying from 47° at the lowest concentration to 32° at the highest concentration. The antibacterial activities of the different PPy films were determined both by the halo inhibition method and by the colony forming units (CFUs) counting method over time against Gram-positive S. aureus and Gram-negative E. coli bacteria. Films obtained by incorporation of [PyC8MIm]Br-ZnCl2 showed excellent antibacterial properties, at least two times higher than those of neat PPy, validating our strategy. Furthermore, a comparison of the antibacterial properties of the films obtained using the same [PyC8MIm]Br-ZnCl2 concentration (50 mM) evidenced much better activity against Gram-positive (no bacterial survival within 5 min) than against Gram-negative bacteria (no bacterial survival within 3 h). Finally, the antibacterial performances over time could be tuned by the concentration of the employed pyrrole-functionalized ionic liquid monomer. Against E. coli, using 100 mM of [PyC8MIm]Br-ZnCl2, the bacteria were totally killed within a few minutes, using 50 mM, they were killed after 2 h while using 10 mM, about 20% of bacteria survived even after 6 h.
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Affiliation(s)
- Hamdi Ben Halima
- UMR CNRS 6213, Institut UTINAM, Université de Franche-Comté, 16 Route de Gray, Besançon F-25000, France
| | - Thibaut Zwingelstein
- UMR CNRS 6174, Institut FEMTO-ST, Université de Franche-Comté, 15B Avenue des Montboucons, Besançon 25030, France
| | - Vincent Humblot
- UMR CNRS 6174, Institut FEMTO-ST, Université de Franche-Comté, 15B Avenue des Montboucons, Besançon 25030, France
| | - Boris Lakard
- UMR CNRS 6213, Institut UTINAM, Université de Franche-Comté, 16 Route de Gray, Besançon F-25000, France
| | - Lydie Viau
- UMR CNRS 6213, Institut UTINAM, Université de Franche-Comté, 16 Route de Gray, Besançon F-25000, France
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Song X, Tian R, Liu K. Recent advances in the application of ionic liquids in antimicrobial material for air disinfection and sterilization. Front Cell Infect Microbiol 2023; 13:1186117. [PMID: 37265495 PMCID: PMC10230022 DOI: 10.3389/fcimb.2023.1186117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/04/2023] [Indexed: 06/03/2023] Open
Abstract
Airborne transmission is one of the most unpredictable routes of infection. Nowadays, airborne diseases increase ever than before because of the complex living air environment. Apart from the inorganic particles, active microorganisms including bacteria, viruses, and fungi are incorporated in the pathogens acting as threaten to public health, which can hardly be treated by the traditional air purification methods based on adsorption. Therefore, effective filtration material with antimicrobial activity is demanded to solve the problem. Ionic liquids (ILs) are a category of salts that remain liquid at room temperature. The stable physico-chemical properties and extremely low vapor pressure make them suitable for a wide range of applications. Thanks to the numerous combinations of cations and anions, as well as the ability of inheriting properties from the parent ions, Ils are believed to be a promising industrial material. In recent decades, several Ils, such as imidazolium, pyridinium, pyrrolidinium, phosphonium, and choline, have been found to have antimicrobial activity in their monomeric or polymeric forms. This work focuses on the antimicrobial activity and safety of the latest types of ionic liquids, discussing the synthesis or manufacturing methods of Ils for air purification and filtration. Furthermore, possible applications of Ils antimicrobial materials in medical instruments and indoor environments are mentioned to encourage the scientific community to further explore the potential applications of Ils.
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Affiliation(s)
- Xizi Song
- Division of Environment and Sustainability, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, Hong Kong SAR, China
| | - Rujin Tian
- University of Health and Rehabilitation Sciences Qingdao Hospital (Qingdao Municipal Hospital), Qingdao, Shandong, China
| | - Kai Liu
- University of Health and Rehabilitation Sciences Qingdao Hospital (Qingdao Municipal Hospital), Qingdao, Shandong, China
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Mishra K, Devi N, Siwal SS, Zhang Q, Alsanie WF, Scarpa F, Thakur VK. Ionic Liquid-Based Polymer Nanocomposites for Sensors, Energy, Biomedicine, and Environmental Applications: Roadmap to the Future. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2202187. [PMID: 35853696 PMCID: PMC9475560 DOI: 10.1002/advs.202202187] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/30/2022] [Indexed: 05/19/2023]
Abstract
Current interest toward ionic liquids (ILs) stems from some of their novel characteristics, like low vapor pressure, thermal stability, and nonflammability, integrated through high ionic conductivity and broad range of electrochemical strength. Nowadays, ionic liquids represent a new category of chemical-based compounds for developing superior and multifunctional substances with potential in several fields. ILs can be used in solvents such as salt electrolyte and additional materials. By adding functional physiochemical characteristics, a variety of IL-based electrolytes can also be used for energy storage purposes. It is hoped that the present review will supply guidance for future research focused on IL-based polymer nanocomposites electrolytes for sensors, high performance, biomedicine, and environmental applications. Additionally, a comprehensive overview about the polymer-based composites' ILs components, including a classification of the types of polymer matrix available is provided in this review. More focus is placed upon ILs-based polymeric nanocomposites used in multiple applications such as electrochemical biosensors, energy-related materials, biomedicine, actuators, environmental, and the aviation and aerospace industries. At last, existing challenges and prospects in this field are discussed and concluding remarks are provided.
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Affiliation(s)
- Kirti Mishra
- Department of ChemistryM.M. Engineering CollegeMaharishi Markandeshwar (Deemed to be University)Mullana‐AmbalaHaryana133207India
| | - Nishu Devi
- Mechanics and Energy LaboratoryDepartment of Civil and Environmental EngineeringNorthwestern University2145 Sheridan RoadEvanstonIL60208USA
| | - Samarjeet Singh Siwal
- Department of ChemistryM.M. Engineering CollegeMaharishi Markandeshwar (Deemed to be University)Mullana‐AmbalaHaryana133207India
| | - Qibo Zhang
- Key Laboratory of Ionic Liquids MetallurgyFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming650093P. R. China
- State Key Laboratory of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan ProvinceKunming650093P. R. China
| | - Walaa F. Alsanie
- Department of Clinical Laboratories SciencesThe Faculty of Applied Medical SciencesTaif UniversityP.O. Box 11099Taif21944Saudi Arabia
| | - Fabrizio Scarpa
- Bristol Composites InstituteUniversity of BristolBristolBS8 1TRUK
| | - Vijay Kumar Thakur
- Biorefining and Advanced Materials Research CenterScotland's Rural College (SRUC)Kings Buildings, West Mains RoadEdinburghEH9 3JGUK
- School of EngineeringUniversity of Petroleum and Energy Studies (UPES)DehradunUttarakhand248007India
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Siddiqui R, Abouleish MY, Khamis M, Ibrahim T, Khan NA. Primary Amoebic Meningoencephalitis: Potential Application of Ionic Liquids Against Brain-Eating Amoebae? Acta Parasitol 2022; 67:1032-1034. [PMID: 35294972 DOI: 10.1007/s11686-022-00532-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 02/23/2022] [Indexed: 11/24/2022]
Abstract
Naegleria fowleri, a well-known brain-eating amoeba, induces high mortality with no available effective treatment. Ionic liquids are compounds that contain a variety of cations and anions that can be tailored to specific applications. Based on the biological, chemical and physical properties of these ionic liquids, this work proposes the use of ionic liquids as novel anti-Naegleria fowleri biocides.
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Affiliation(s)
- Ruqaiyyah Siddiqui
- College of Arts and Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | | | - Mustafa Khamis
- College of Arts and Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | - Taleb Ibrahim
- College of Engineering, American University of Sharjah, Sharjah, United Arab Emirates
| | - Naveed Ahmed Khan
- Department of Clinical Sciences, College of Medicine, University of Sharjah, University City, Sharjah, United Arab Emirates.
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A thermodynamic investigation of the effect of cationic structure on the self-aggregation behavior of Surface-Active ionic liquids in the presence of an amino acid. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118904] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Rita Pereira A, Gomes IB, Simões M. Choline-based ionic liquids for planktonic and biofilm growth control of Bacillus cereus and Pseudomonas fluorescens. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Szymaniak D, Ciarka K, Marcinkowska K, Praczyk T, Gwiazdowska D, Marchwińska K, Walkiewicz F, Pernak J. Bifunctional Double-Salt Ionic Liquids Containing both 4-Chloro-2-Methylphenoxyacetate and l-Tryptophanate Anions with Herbicidal and Antimicrobial Activity. ACS OMEGA 2021; 6:33779-33791. [PMID: 34926926 PMCID: PMC8679003 DOI: 10.1021/acsomega.1c05048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 11/23/2021] [Indexed: 06/14/2023]
Abstract
The goal of this research was to obtain and characterize ionic liquids based on a bisammonium cation and both 4-chloro-2-methylphenoxyacetate (MCPA) and l-tryptophanate anions. The concept of including two structurally different anions was utilized to achieve improved biological activity, while crucial functional traits could be designed by modifying the cation. The synthesis process was efficient and resulted in high yields. Subsequent analyses (nuclear magnetic resonance (NMR), Fourier transform infrared (FT-IR) spectroscopy, and high-performance liquid chromatography (HPLC)) confirmed the chemical structure, purity, and molar ratio of ions in the obtained compounds. The described compounds are novel and have not been previously described in the literature. Evaluations of physicochemical properties indicated that the obtained double-salt ionic liquids (DSILs) exhibited high thermal stability, high solubility in water, and surface activity. A biological activity assessment using greenhouse tests revealed that the herbicidal efficiency of the studied DSILs was notably increased compared to the reference commercial herbicide (even by ∼50% in the case of oilseed rape), which could be attributed to their high wettability toward hydrophobic surfaces. The compounds also efficiently inhibited the growth of several microbial species, with minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC)/minimum fungicidal concentration (MFC) values at the level of several μg·mL-1. The length of the spacer and alkyl substituent in the cation notably influenced the physicochemical and biological properties of the DSILs, which allowed us to design the structures of the obtained compounds in accordance with needs. The presented results confirm the high application potential of the described DSILs and provide a new and promising path for obtaining new and efficient plant-protection agents.
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Affiliation(s)
- Daria Szymaniak
- Faculty
of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, Poznań 60-965, Poland
| | - Kamil Ciarka
- PPC
ADOB, ul. Kołodzieja
11, Poznań 61-070, Poland
| | - Katarzyna Marcinkowska
- Institute
of Plant Protection, National Research Institute, ul. Węgorka 20, Poznań 60-318, Poland
| | - Tadeusz Praczyk
- Institute
of Plant Protection, National Research Institute, ul. Węgorka 20, Poznań 60-318, Poland
| | - Daniela Gwiazdowska
- Department
of Natural Science and Quality Assurance, Institute of Quality Science, Poznan University of Economics and Business, al. Niepodległości
10, Poznań 61-875, Poland
| | - Katarzyna Marchwińska
- Department
of Natural Science and Quality Assurance, Institute of Quality Science, Poznan University of Economics and Business, al. Niepodległości
10, Poznań 61-875, Poland
| | - Filip Walkiewicz
- Faculty
of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, Poznań 60-965, Poland
| | - Juliusz Pernak
- Faculty
of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, Poznań 60-965, Poland
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Solid-liquid phase behavior of mixtures of 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amides involving long alkyl side chains. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Correia DM, Fernandes LC, Fernandes MM, Hermenegildo B, Meira RM, Ribeiro C, Ribeiro S, Reguera J, Lanceros-Méndez S. Ionic Liquid-Based Materials for Biomedical Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2401. [PMID: 34578716 PMCID: PMC8471968 DOI: 10.3390/nano11092401] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/01/2021] [Accepted: 09/08/2021] [Indexed: 11/16/2022]
Abstract
Ionic liquids (ILs) have been extensively explored and implemented in different areas, ranging from sensors and actuators to the biomedical field. The increasing attention devoted to ILs centers on their unique properties and possible combination of different cations and anions, allowing the development of materials with specific functionalities and requirements for applications. Particularly for biomedical applications, ILs have been used for biomaterials preparation, improving dissolution and processability, and have been combined with natural and synthetic polymer matrixes to develop IL-polymer hybrid materials to be employed in different fields of the biomedical area. This review focus on recent advances concerning the role of ILs in the development of biomaterials and their combination with natural and synthetic polymers for different biomedical areas, including drug delivery, cancer therapy, tissue engineering, antimicrobial and antifungal agents, and biosensing.
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Affiliation(s)
- Daniela Maria Correia
- Centre of Physics, University of Minho, 4710-058 Braga, Portugal; (L.C.F.); (M.M.F.); (R.M.M.); (C.R.); (S.R.)
- Centre of Chemistry, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal
| | - Liliana Correia Fernandes
- Centre of Physics, University of Minho, 4710-058 Braga, Portugal; (L.C.F.); (M.M.F.); (R.M.M.); (C.R.); (S.R.)
| | - Margarida Macedo Fernandes
- Centre of Physics, University of Minho, 4710-058 Braga, Portugal; (L.C.F.); (M.M.F.); (R.M.M.); (C.R.); (S.R.)
- CEB—Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Bruno Hermenegildo
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain;
| | - Rafaela Marques Meira
- Centre of Physics, University of Minho, 4710-058 Braga, Portugal; (L.C.F.); (M.M.F.); (R.M.M.); (C.R.); (S.R.)
- CEB—Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Clarisse Ribeiro
- Centre of Physics, University of Minho, 4710-058 Braga, Portugal; (L.C.F.); (M.M.F.); (R.M.M.); (C.R.); (S.R.)
- CEB—Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Sylvie Ribeiro
- Centre of Physics, University of Minho, 4710-058 Braga, Portugal; (L.C.F.); (M.M.F.); (R.M.M.); (C.R.); (S.R.)
- IB-S—Institute for Research and Innovation on Bio-Sustainability, University of Minho, 4710-057 Braga, Portugal
| | - Javier Reguera
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain;
| | - Senentxu Lanceros-Méndez
- Centre of Physics, University of Minho, 4710-058 Braga, Portugal; (L.C.F.); (M.M.F.); (R.M.M.); (C.R.); (S.R.)
- IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain
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11
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Cho CW, Pham TPT, Zhao Y, Stolte S, Yun YS. Review of the toxic effects of ionic liquids. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 786:147309. [PMID: 33975102 DOI: 10.1016/j.scitotenv.2021.147309] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/15/2021] [Accepted: 04/18/2021] [Indexed: 05/11/2023]
Abstract
Interest in ionic liquids (ILs), called green or designer solvents, has been increasing because of their excellent properties such as thermal stability and low vapor pressure; thus, they can replace harmful organic chemicals and help several industrial fields e.g., energy-storage materials production and biomaterial pretreatment. However, the claim that ILs are green solvents should be carefully considered from an environmental perspective. ILs, given their minimal vapor pressure, may not directly cause atmospheric pollution. However, they have the potential to cause adverse effects if leaked into the environment, for instance if they are spilled due to human mistakes or technical errors. To estimate the risks of ILs, numerous ILs have had their toxicity assessed toward several micro- and macro-organisms over the past few decades. Since the toxic effects of ILs depend on the method of estimating toxicity, it is necessary to briefly summarize and comprehensively discuss the biological effects of ILs according to their structure and toxicity testing levels. This can help simplify our understanding of the toxicity of ILs. Therefore, in this review, we discuss the key findings of toxicological information of ILs, collect some toxicity data of ILs to different species, and explain the influence of IL structure on their toxic properties. In the discussion, we estimated two different sensitivity values of toxicity testing levels depending on the experiment condition, which are theoretical magnitudes of the inherent sensitivity of toxicity testing levels in various conditions and their changes in biological response according to the change in IL structure. Finally, some perspectives, future research directions, and limitations to toxicological research of ILs, presented so far, are discussed.
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Affiliation(s)
- Chul-Woong Cho
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju, South Korea.
| | - Thi Phuong Thuy Pham
- Faculty of Biotechnology, HoChiMihn University of Food Industry, Ho Chi Minh City, Viet Nam
| | - Yufeng Zhao
- College of Resource and Environmental Science, South-Central University for Nationalities, Wuhan 430074, Hubei Province, China
| | - Stefan Stolte
- Technische Universität Dresden, Faculty of Environmental Sciences, Department of Hydrosciences, Institute of Water Chemistry, Bergstraße 66, 01062 Dresden, Germany
| | - Yeoung-Sang Yun
- School of Chemical Engineering, Chonbuk National University, 567 Beakje-dearo, Deokjin-gu, Jeonju, Jeonbuk 561-756, South Korea.
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12
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McLaughlin M, Gilea MA, Earle MJ, Seddon KR, Gilmore BF, Kelly SA. Characterization of ionic liquid cytotoxicity mechanisms in human keratinocytes compared with conventional biocides. CHEMOSPHERE 2021; 270:129432. [PMID: 33422997 DOI: 10.1016/j.chemosphere.2020.129432] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 12/15/2020] [Accepted: 12/21/2020] [Indexed: 06/12/2023]
Abstract
The ability to chemically modify ionic liquids (ILs) has led to an expansion in interest in their use in a diversity of applications, not least as antimicrobials and biocides. Relatively little is known about cytotoxicity mechanisms of ILs in comparison to other biocides currently in widespread use, as well as their practical significance for the ecological environment and human health. Using NCTC 2544 and HaCat human keratinocyte cells, this study aimed to characterize cytotoxicity rates and mechanisms of a range of ILs. Using both lactate dehydrogenase (LDH) and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) based cytotoxicity assays, it was confirmed that at biocide-relevant concentrations, ILs with longer alkyl chains exhibited greater biocidal activity than those with shorter alkyl chains, with comparable activity to the commonly used biocides chlorhexidine, benzalkonium chloride and cetylpyridinium chloride, at relevant in-use biocide concentrations. Mode of cell death, measured using fluorescence-activated cell sorting (FACS) and caspase 3/7 activity, determined necrosis to be the primary cytotoxic mechanism at higher concentrations of the biocides stated above, and with ILs [C14MIM]Cl and [C14quin]Br, with apoptosis observed at borderline necrotic concentrations. Perhaps most interestingly, modification of anion had a significant effect on cytotoxicity. The use of N[SO2CF3] as an anion to [C16MIM] attenuated cytotoxicity 10-fold in comparison to other anions, suggesting cytotoxicity may also be a tuneable property when using ILs as biocides.
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Affiliation(s)
- Martin McLaughlin
- School of Pharmacy, Queens University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast, BT9 7BL, UK; Institute for Cancer Research, 123 Old Brompton Road, London, SW7 3RP, UK
| | - Manuela A Gilea
- The QUILL Research Centre, School of Chemistry, Queen's University of Belfast, Belfast, BT9 5AG, UK
| | - Martyn J Earle
- The QUILL Research Centre, School of Chemistry, Queen's University of Belfast, Belfast, BT9 5AG, UK
| | - Kenneth R Seddon
- The QUILL Research Centre, School of Chemistry, Queen's University of Belfast, Belfast, BT9 5AG, UK
| | - Brendan F Gilmore
- School of Pharmacy, Queens University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Stephen A Kelly
- School of Pharmacy, Queens University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast, BT9 7BL, UK.
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Simões M, Pereira AR, Simões LC, Cagide F, Borges F. Biofilm control by ionic liquids. Drug Discov Today 2021; 26:1340-1346. [PMID: 33549827 DOI: 10.1016/j.drudis.2021.01.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 01/19/2021] [Accepted: 01/29/2021] [Indexed: 10/22/2022]
Abstract
Ionic liquids (ILs) are remarkable chemical compounds with applications in many areas of modern science. They are increasingly recognized as promising compounds to fight microorganisms in both planktonic and biofilm states, contributing to reinvent the antimicrobial pipeline. Biofilm-related infections are particularly challenging given that the scientific community has not yet identified a reliable control strategy. Understanding of the action of ILs in biofilm control is is still in a very early stage. However, given the highly tunable nature and exceptional properties of ILs, they are excellent candidates for biofilm control. Here, we review the major advances in, and challenges tothe use of ILs for effective biofilm control.
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Affiliation(s)
- Manuel Simões
- LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal.
| | - Ana Rita Pereira
- LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
| | - Lúcia Chaves Simões
- CEB, Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057 Braga, Portugal
| | - Fernando Cagide
- CIQUP, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - Fernanda Borges
- CIQUP, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal.
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Torres MDT, Voskian S, Brown P, Liu A, Lu TK, Hatton TA, de la Fuente-Nunez C. Coatable and Resistance-Proof Ionic Liquid for Pathogen Eradication. ACS NANO 2021; 15:966-978. [PMID: 33438392 DOI: 10.1021/acsnano.0c07642] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Antibiotic-resistant bacteria infect close to 3 million people, and kill 35,000, each year in the United States. Ionic liquid (IL)-based antimicrobial agents have the potential to diversify our ever-diminishing antibiotic arsenal. Here, we describe an IL with potent submicromolar antimicrobial activity in vitro against clinically relevant Gram-negative and Gram-positive bacterial pathogens as well as anti-infective activity in a mouse model. The IL kills pathogenic bacteria such as Acinetobacter baumannii, Salmonella enterica, and Escherichia coli by disrupting their outer membrane and does not select for bacterial resistance. We show incorporation of our IL into surface coatings to generate a type of antibiofilm material. The IL-loaded ionogel surfaces demonstrate high-antimicrobial and antifouling activity by killing bacteria in both static and dynamic tests. Our IL-based antibiofilm surfaces are low-cost and easy to manufacture, can be formed on glass, latex, plastic, and metal surfaces, such as catheters and other medical devices where high local concentrations of antimicrobials are needed, and may have applications in other clinical and industrial settings.
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Affiliation(s)
- Marcelo D T Torres
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Departments of Bioengineering and Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Sahag Voskian
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Paul Brown
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Andong Liu
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Boston Children's Hospital, Boston, Massachusetts 02115, United States
| | - Timothy K Lu
- Synthetic Biology Group, MIT Synthetic Biology Center, Department of Biological Engineering, and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- The Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02139, United States
| | - T Alan Hatton
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Cesar de la Fuente-Nunez
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Departments of Bioengineering and Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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Croitoru C, Roata IC. Ionic Liquids as Antifungal Agents for Wood Preservation. Molecules 2020; 25:E4289. [PMID: 32962068 PMCID: PMC7570619 DOI: 10.3390/molecules25184289] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 09/17/2020] [Accepted: 09/18/2020] [Indexed: 12/19/2022] Open
Abstract
Ionic liquids represent a class of highly versatile organic compounds used extensively in the last decade for lignocellulose biomass fractionation and dissolution, as well as property modifiers for wood materials. This review is dedicated to the use of ionic liquids as antifungal agents for wood preservation. Wood preservation against fungal attack represents a relatively new domain of application for ionic liquids, emerging in the late 1990s. Comparing to other application domains of ionic liquids, this particular one has been relatively little researched. Ionic liquids may be promising as wood preservatives due to their ability to swell wood, which translates into better penetration ability and fixation into the bulk of the wood material than other conventional antifungal agents, avoiding leaching over time. The antifungal character of ionic liquids depends on the nature of their alkyl-substituted cation, on the size and position of their substituents, and of their anion. It pertains to a large variety of wood-colonizing fungi, both Basidiomycetes and Fungiimperfecti.
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Affiliation(s)
- Catalin Croitoru
- Materials Engineering and Welding Department, Transilvania University of Brasov, Eroilor 29 Blvd., 500039 Brasov, Romania
| | - Ionut Claudiu Roata
- Materials Engineering and Welding Department, Transilvania University of Brasov, Eroilor 29 Blvd., 500039 Brasov, Romania
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Bains D, Singh G, Kaur N, Singh N. Development of an Ionic Liquid@Metal-Based Nanocomposite-Loaded Hierarchical Hydrophobic Surface to the Aluminum Substrate for Antibacterial Properties. ACS APPLIED BIO MATERIALS 2020; 3:4962-4973. [DOI: 10.1021/acsabm.0c00492] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Deepak Bains
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Gagandeep Singh
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Navneet Kaur
- Department of Chemistry, Panjab University, Chandigarh, Punjab 160014, India
| | - Narinder Singh
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
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Florio W, Rizzato C, Becherini S, Guazzelli L, D'Andrea F, Lupetti A. Synergistic activity between colistin and the ionic liquids 1-methyl-3-dodecylimidazolium bromide, 1-dodecyl-1-methylpyrrolidinium bromide, or 1-dodecyl-1-methylpiperidinium bromide against Gram-negative bacteria. J Glob Antimicrob Resist 2020; 21:99-104. [PMID: 32298808 DOI: 10.1016/j.jgar.2020.03.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 03/19/2020] [Accepted: 03/23/2020] [Indexed: 01/23/2023] Open
Abstract
OBJECTIVES Ionic liquids have shown potential for applications as antimicrobials. Their antimicrobial activity has been shown to be higher against Gram-positive than Gram-negative bacteria, suggesting a protective role for the outer membrane of Gram-negative microorganisms. Colistin is a last-resort antibiotic often used for treating infections caused by multi-drug resistant Gram-negative bacteria. Colistin interacts with the bacterial lipopolysaccharide, thus altering the structure and increasing the permeability of the outer membrane. The aim of this study was to investigate the interaction between colistin and the ionic liquids 1-methyl-3-dodecylimidazolium bromide, 1-dodecyl-1-methylpyrrolidinium bromide, and 1-dodecyl-1-methylpiperidinium bromide against Gram-negative bacteria of clinical importance such as Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Acinetobacter baumannii. METHODS The interaction between colistin and ionic liquids against Gram-negative bacteria was evaluated by the checkerboard assay. Bacterial killing assays against P. aeruginosa were carried out to assess whether the synergistic combinations were bactericidal. RESULTS The results of checkerboard assays showed that all three ionic liquids interacted synergistically with colistin against K. pneumoniae, P. aeruginosa, and A. baumannii but not against E. coli, which was more sensitive to all three ionic liquids compared with the other tested species. The synergistic combinations showed no haemolytic activity. Bacterial killing assays showed that the synergistic effect between colistin and each one of the three tested ionic liquids against P. aeruginosa was bactericidal. CONCLUSION Overall, the results obtained suggest that colistin and ionic liquids might be used in combination for possible applications to combat infections caused by multi-drug resistant Gram-negative bacteria.
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Affiliation(s)
- Walter Florio
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Via San Zeno 37-39, 56127, Pisa, Italy.
| | - Cosmeri Rizzato
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Via San Zeno 37-39, 56127, Pisa, Italy.
| | - Stefano Becherini
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno Pisano 6, 56126, Pisa, Italy.
| | - Lorenzo Guazzelli
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno Pisano 6, 56126, Pisa, Italy.
| | - Felicia D'Andrea
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno Pisano 6, 56126, Pisa, Italy.
| | - Antonella Lupetti
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Via San Zeno 37-39, 56127, Pisa, Italy.
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18
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Abramenko N, Kustov L, Metelytsia L, Kovalishyn V, Tetko I, Peijnenburg W. A review of recent advances towards the development of QSAR models for toxicity assessment of ionic liquids. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121429. [PMID: 31732345 DOI: 10.1016/j.jhazmat.2019.121429] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 09/27/2019] [Accepted: 10/07/2019] [Indexed: 06/10/2023]
Affiliation(s)
- Natalia Abramenko
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Leninsky prospect 47, 119991, Russia; N. Severtsov Institute of Ecology and Evolution, RAS, Moscow, Russia
| | - Leonid Kustov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Leninsky prospect 47, 119991, Russia; National University of Science and Technology MISiS, Leninsky prosp. 4, Moscow, Russia
| | - Larysa Metelytsia
- Institute of Bioorganic Chemistry & Petrochemistry, National Academy of Science of Ukraine, 1 Murmanska Street, 02660, Kyiv, Ukraine
| | - Vasyl Kovalishyn
- Institute of Bioorganic Chemistry & Petrochemistry, National Academy of Science of Ukraine, 1 Murmanska Street, 02660, Kyiv, Ukraine
| | - Igor Tetko
- Helmholtz Zentrum München - German Research Center for Environmental Health (GmbH), Institute of Structural Biology, BIGCHEM GmbH, Ingolstädter Landstraße 1, b. 60w, D-85764 Neuherberg, Germany
| | - Willie Peijnenburg
- Institute of Environmental Sciences (CML), Leiden University, PO Box 9518, 2300 RA, Leiden, the Netherlands; National Institute of Public Health and the Environment, Center for Safety of Substances and Products, PO Box 1, 3720 BA, Bilthoven, the Netherlands.
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Das S, Kashyap N, Kalita S, Bora DB, Borah R. A brief insight into the physicochemical properties of room-temperature acidic ionic liquids and their catalytic applications in C C bond formation reactions. ADVANCES IN PHYSICAL ORGANIC CHEMISTRY 2020. [DOI: 10.1016/bs.apoc.2020.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Tang J, Song H, Feng X, Yohannes A, Yao S. Ionic Liquid-Like Pharmaceutical Ingredients and Applications of Ionic Liquids in Medicinal Chemistry: Development, Status and Prospects. Curr Med Chem 2019; 26:5947-5967. [DOI: 10.2174/0929867325666180605123436] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 02/20/2018] [Accepted: 05/31/2018] [Indexed: 11/22/2022]
Abstract
Background:As a new kind of green media and bioactive compounds with special structure, Ionic Liquids (ILs) are attracting much attention and applied widely in many fields. However, their roles and potential have not been fully recognized by many researchers of medicinal chemistry. Because of obvious differences from other traditional drugs and reagents, their uses and performance together with advantages and disadvantages need to be explored and reviewed in detail.Methods:For a systematic and explicit description of the relationship between ILs and medicinal chemistry, all of the contents were elucidated and summarized in a series of independent parts. In each part, it started from the research background or a conceptual framework and then specific examples were introduced to illustrate the theme. Finally, the important conclusions were drawn and its future was outlooked after the discussion about related key problems appearing in each mentioned research. Meanwhile, methodologies such as empirical analysis, comparison and induction were applied in different sections to exposit our subject.Results:The whole review was composed of five parts, and 148 papers were cited in total. Related basic information of ionic liquids was provided on the basis of representative references, including their concepts and important characters. Then 82 papers outlined ionic liquid-like active pharmaceutical ingredients, which unfolded with their major biological activities (antimicrobial activity, antibiofilm activity, antitumor activity, anticholinesterase activity and so on). Applications of ionic liquids in the synthesis of drugs and pharmaceutical intermediates were elaborated in 92 papers to illustrate the important roles of ILs and their extraordinary properties in this field. Moreover, new technologies (such as immobilization of IL, microwave reaction, solventfree synthesis, microreactor, etc) were introduced for further innovation. Finally, 26 papers were included to expound the status of the IL-assisted derivatization of various natural lead compounds.Conclusion:This review placed emphasis on chemical structures of ILs and their structureactivity relationships in a specific manner, leading to meaningful and valuable related information to some related fields and thus promotes further development and application of various ILs for medicinal chemistry. The deep exploration for key scientific problems is the driving force to propel their theoretical breakthrough and industrial production.
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Affiliation(s)
- Jie Tang
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Hang Song
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Xueting Feng
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Alula Yohannes
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Shun Yao
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
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21
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Florio W, Becherini S, D'Andrea F, Lupetti A, Chiappe C, Guazzelli L. Comparative evaluation of antimicrobial activity of different types of ionic liquids. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109907. [PMID: 31499958 DOI: 10.1016/j.msec.2019.109907] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 06/18/2019] [Accepted: 06/20/2019] [Indexed: 10/26/2022]
Abstract
In order to identify most suitable ionic liquids (ILs) for potential applications in infection prevention and control, in the present study we comparatively evaluated the antimicrobial potency and hemolytic activity of 15 ILs, including 11 previously described and four newly synthesized ILs, using standard microbiological procedures against Gram-positive and Gram-negative bacteria. ILs showing the lowest minimum inhibitory concentration (MIC) were tested for their hemolytic activity. Three ILs characterized by low MIC values and low hemolytic activity, namely 1-methyl-3-dodecylimidazolium bromide, 1-dodecyl-1-methylpyrrolidinium bromide, and 1-dodecyl-1-methylpiperidinium bromide were further investigated to determine their minimum bactericidal concentration (MBC), and their ability to inhibit biofilm formation by Staphylococcus aureus or Pseudomonas aeruginosa. Killing kinetics results revealed that both Gram-positive and Gram-negative bacteria are rapidly killed after exposure to MBC of the selected ILs. Furthermore, the selected ILs efficiently inhibited biofilm formation by S. aureus or P. aeruginosa. To our knowledge, this is the first systematic study investigating the antimicrobial potential of different types of ionic liquids using standard microbiological procedures. In the overall, the selected ILs showed low hemolytic and powerful antimicrobial activity, and efficient inhibition of biofilm formation, especially against S. aureus, suggesting their possible application as anti-biofilm agents.
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Affiliation(s)
- Walter Florio
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italy
| | | | | | - Antonella Lupetti
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italy.
| | - Cinzia Chiappe
- Dipartimento di Farmacia, Università di Pisa, Pisa, Italy
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Azmi NA, Idris A, Yusof NSM. Ultrasonic technology for value added products from feather keratin. ULTRASONICS SONOCHEMISTRY 2018; 47:99-107. [PMID: 29908610 DOI: 10.1016/j.ultsonch.2018.04.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 04/25/2018] [Accepted: 04/25/2018] [Indexed: 06/08/2023]
Abstract
Feather keratin is a biomass generated in excess from various livestock industries. With appropriate processing, it holds potential as a green source for degradable biopolymer that could potentially replace current fossil fuel based materials. Several processing methods have been developed, but the use of ultrasonication has not been explored. In this study, we focus on (i) comparing and optimizing the dissolution process of turkey feather keratin through sonication and conventional processes, and (ii) generating a biodegradable polymer material, as a value added product, from the dissolved keratin that could be used in packaging and other applications. Sonication of feather keratin in pure ionic liquids (ILs) and a mixture containing ILs and different co-solvents was conducted under different applied acoustic power levels. It was found that ultrasonic irradiation significantly improved the rate of dissolution of feather keratin as compared to the conventional method, from about 2 h to less than 20 min. The amount of ILs needed was also reduced by introducing a suitable co-solvent. The keratin was then regenerated, analyzed and characterized using various methods. This material holds the potential to be reused in various appliances.
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Affiliation(s)
- Nur Afiqah Azmi
- Department of Chemistry, Faculty of Science, University of Malaya, Malaysia
| | - Azila Idris
- Department of Chemistry, Faculty of Science, University of Malaya, Malaysia; University Malaya Centre for Ionic Liquids (UMCiL), University of Malaya, Malaysia
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23
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Benedetto A, Ballone P. Room-Temperature Ionic Liquids and Biomembranes: Setting the Stage for Applications in Pharmacology, Biomedicine, and Bionanotechnology. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:9579-9597. [PMID: 29510045 DOI: 10.1021/acs.langmuir.7b04361] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Empirical evidence and conceptual elaboration reveal and rationalize the remarkable affinity of organic ionic liquids for biomembranes. Cations of the so-called room-temperature ionic liquids (RTILs), in particular, are readily absorbed into the lipid fraction of biomembranes, causing a variety of observable biological effects, including generic cytotoxicity, broad antibacterial potential, and anticancer activity. Chemical physics analysis of model systems made of phospholipid bilayers, RTIL ions, and water confirm and partially explain this evidence, quantifying the mild destabilizing effect of RTILs on the structural, dynamic, and thermodynamic properties of lipids in biomembranes. Our Feature Article presents a brief introduction to these systems and to their roles in biophysics and biotechnology, summarizing recent experimental and computational results on their properties. More importantly, it highlights the many developments in pharmacology, biomedicine, and bionanotechnology expected from the current research effort on this topic. To anticipate future developments, we speculate on (i) potential applications of (magnetic) RTILs to affect and control the rheology of cells and biological tissues, of great relevance for diagnostics and (ii) the use of RTILs to improve the durability, reliability, and output of biomimetic photovoltaic devices.
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Affiliation(s)
- Antonio Benedetto
- Laboratory for Neutron Scattering , Paul Scherrer Institute , Villigen 5232 , Switzerland
- Conway Institute of Biomolecular and Biomedical Research , University College Dublin , Dublin 4 , Ireland
| | - Pietro Ballone
- Italian Institute of Technology , Via Morego 30 , 16163 Genova , Italy
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24
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Hodyna D, Kovalishyn V, Semenyuta I, Blagodatnyi V, Rogalsky S, Metelytsia L. Imidazolium ionic liquids as effective antiseptics and disinfectants against drug resistant S. aureus: In silico and in vitro studies. Comput Biol Chem 2018; 73:127-138. [PMID: 29494924 DOI: 10.1016/j.compbiolchem.2018.01.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 01/29/2018] [Accepted: 01/30/2018] [Indexed: 11/26/2022]
Abstract
This paper describes Quantitative Structure-Activity Relationships (QSAR) studies, molecular docking and in vitro antibacterial activity of several potent imidazolium-based ionic liquids (ILs) against S. aureus ATCC 25923 and its clinical isolate. Small set of 131 ILs was collected from the literature and uploaded in the OCHEM database. QSAR methodologies used Associative Neural Networks and Random Forests (WEKA-RF) methods. The predictive ability of the models was tested through cross-validation, giving cross-validated coefficients q2 = 0.82-0.87 for regression models and overall prediction accuracies of 80-82.1% for classification models. The proposed QSAR models are freely available online on OCHEM server at https://ochem.eu/article/107364 and can be used for estimation of antibacterial activity of new imidazolium-based ILs. A series of synthesized 1,3-dialkylimidazolium ILs with predicted activity were evaluated in vitro. The high activity of 7 ILs against S. aureus strain and its clinical isolate was measured and thereafter analyzed by the molecular docking to prokaryotic homologue of a eukaryotic tubulin FtsZ.
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Affiliation(s)
- Diana Hodyna
- Department of Medical and Biological Researches, Institute of Bioorganic Chemistry and Petrochemistry, NAS of Ukraine, Kyiv-94, 02160, Ukraine.
| | - Vasyl Kovalishyn
- Department of Medical and Biological Researches, Institute of Bioorganic Chemistry and Petrochemistry, NAS of Ukraine, Kyiv-94, 02160, Ukraine
| | - Ivan Semenyuta
- Department of Medical and Biological Researches, Institute of Bioorganic Chemistry and Petrochemistry, NAS of Ukraine, Kyiv-94, 02160, Ukraine
| | - Volodymyr Blagodatnyi
- Department of Microbiology and Epidemiology, Shupyk National Medical Academy of Postgraduate Education, Kyiv 04112, Ukraine
| | - Sergiy Rogalsky
- Laboratory of Modification of Polymers, Institute of Bioorganic Chemistry and Petrochemistry, NAS of Ukraine, Kyiv 02160, Ukraine
| | - Larisa Metelytsia
- Department of Medical and Biological Researches, Institute of Bioorganic Chemistry and Petrochemistry, NAS of Ukraine, Kyiv-94, 02160, Ukraine
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25
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Environmental Concerns Regarding Ionic Liquids in Biotechnological Applications. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2018; 168:241-328. [DOI: 10.1007/10_2018_79] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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26
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Zheng Z, Guo J, Mao H, Xu Q, Qin J, Yan F. Metal-Containing Poly(ionic liquid) Membranes for Antibacterial Applications. ACS Biomater Sci Eng 2017; 3:922-928. [PMID: 33429564 DOI: 10.1021/acsbiomaterials.7b00165] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Imidazolium-type metal-containing ionic liquid (IL) monomers and their corresponding poly(ionic liquid) (PIL) membranes coordinated with CuCl2 (PILM-Cu), FeCl3 (PILM-Fe), or ZnCl2 (PILM-Zn) were synthesized. The effect of metal ions on the antimicrobial activities against both Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) was investigated. Compared with pristine PILM-Br membrane, PILM-Cu, PILM-Fe, and PILM-Zn membranes exhibit enhanced antibacterial activities due to the attributes of both imidazolium cations and metal-containing anions. Furthermore, all of the metal-containing PIL membranes present low hemolysis toward human red blood cell and high long-term antibacterial stability, even after immersion in water for 90 days, demonstrating clinical feasibility in topical applications.
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Affiliation(s)
- Zhiqiang Zheng
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Jiangna Guo
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Hailei Mao
- Department of Anesthesiology and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Qiming Xu
- Department of Anesthesiology and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Jing Qin
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Feng Yan
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
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Hejazifar M, Earle M, Seddon KR, Weber S, Zirbs R, Bica K. Ionic Liquid-Based Microemulsions in Catalysis. J Org Chem 2016; 81:12332-12339. [PMID: 27978714 PMCID: PMC5168648 DOI: 10.1021/acs.joc.6b02165] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Indexed: 11/29/2022]
Abstract
The design and properties of surface-active ionic liquids that are able to form stable microemulsions with heptane and water are presented, and their promise as reaction media for thermomorphic palladium-catalyzed cross-coupling reactions is demonstrated.
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Affiliation(s)
- Mahtab Hejazifar
- Institute
of Applied Synthetic Chemistry, Vienna University
of Technology, Getreidemarkt
9/163, 1060 Vienna, Austria
| | - Martyn Earle
- The
QUILL Centre, The Queen’s University
of Belfast, Stranmillis
Road, Belfast, Northern Ireland BT9 5AG, United Kingdom
| | - Kenneth R. Seddon
- The
QUILL Centre, The Queen’s University
of Belfast, Stranmillis
Road, Belfast, Northern Ireland BT9 5AG, United Kingdom
| | - Stefan Weber
- Institute
of Applied Synthetic Chemistry, Vienna University
of Technology, Getreidemarkt
9/163, 1060 Vienna, Austria
| | - Ronald Zirbs
- Group
for Biologically Inspired Materials, Institute of Nanobiotechnology
(DNBT), University of Natural Resources
and Life Sciences, Muthgasse
11, 1190 Vienna, Austria
| | - Katharina Bica
- Institute
of Applied Synthetic Chemistry, Vienna University
of Technology, Getreidemarkt
9/163, 1060 Vienna, Austria
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Cognigni A, Gaertner P, Zirbs R, Peterlik H, Prochazka K, Schröder C, Bica K. Surface-active ionic liquids in micellar catalysis: impact of anion selection on reaction rates in nucleophilic substitutions. Phys Chem Chem Phys 2016; 18:13375-84. [PMID: 27121134 PMCID: PMC5317217 DOI: 10.1039/c6cp00493h] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A series of surface-active ionic liquids based on the 1-dodecyl-3-methylimidazolium cation and different anions was synthesized and applied for micellar catalysis of nucleophilic substitutions.
A series of surface-active ionic liquids based on the 1-dodecyl-3-methylimidazolium cation and different anions such as halides and alkylsulfates was synthesized. The aggregation behavior of these ionic liquids in water was characterized by surface tension, conductivity measurements and UV-Vis spectroscopy in order to determine the critical micelle concentration (CMC) and to provide aggregation parameters. The determination of surface activity and aggregation properties of amphiphilic ionic liquids was accompanied by SAXS studies on selected surface-active ionic liquids. The application of these surface-active ionic liquids with different anions was tested in nucleophilic substitution reactions for the degradation of organophosphorus compounds. Kinetic studies via UV-Vis spectrophotometry showed a strong acceleration of the reaction in the micellar system compared to pure water. In addition, an influence of the anion was observed, resulting in a correlation between the anion binding to the micelle and the reaction rate constants, indicating that the careful choice of the surface-active ionic liquid can considerably affect the outcome of reactions.
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Affiliation(s)
- Alice Cognigni
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163, 1060 Vienna, Austria.
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Joubert F, Yeo RP, Sharples GJ, Musa OM, Hodgson DRW, Cameron NR. Preparation of an Antibacterial Poly(ionic liquid) Graft Copolymer of Hydroxyethyl Cellulose. Biomacromolecules 2015; 16:3970-9. [PMID: 26544047 DOI: 10.1021/acs.biomac.5b01300] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Poly(ionic liquid)s (P(IL)s) of different degrees of polymerization (10, 50, and 100) were prepared via RAFT polymerization using an alkyne-terminated xanthate as transfer agent, with a monomer conversion of up to ∼80% and a ĐM of 1.5 for P(IL)100. Subsequently, P(IL) chains were coupled to (15)N-labeled azido-functionalized hydroxyethyl cellulose (HEC), forming graft copolymers of HEC with different chain length and graft densities, which were characterized using ((13)C and (15)N) CP-MAS NMR and FT-IR spectroscopies. The antibacterial activities of HEC-g-P(IL)s were tested against Escherichia coli and Staphylococcus aureus and were comparable to ampicillin, a well-known antibiotic, demonstrating efficient activity of the graft copolymers against bacteria. Moreover, HEC-g-P(IL)s were slightly more effective against E. coli than S. aureus. A decrease in graft density of P(IL)10 on the HEC backbone decreased the activity of the graft copolymers against both bacteria. These findings suggest that HEC-g-P(IL) could find applications as an antiseptic compound, for example, in paint formulation.
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Affiliation(s)
- Fanny Joubert
- Department of Chemistry, Durham University , Science Laboratories, Durham DH1 3LE, United Kingdom.,Biophysical Sciences Institute, Durham University , Science Laboratories, Durham DH1 3LE, United Kingdom
| | - R Paul Yeo
- School of Biological and Biomedical Sciences, Durham University , Science Laboratories, Durham DH1 3LE, United Kingdom.,Biophysical Sciences Institute, Durham University , Science Laboratories, Durham DH1 3LE, United Kingdom
| | - Gary J Sharples
- School of Biological and Biomedical Sciences, Durham University , Science Laboratories, Durham DH1 3LE, United Kingdom.,Biophysical Sciences Institute, Durham University , Science Laboratories, Durham DH1 3LE, United Kingdom
| | - Osama M Musa
- Ashland Speciality Ingredients , 1005 Route 202/206, Bridgewater, New Jersey 08807, United States
| | - David R W Hodgson
- Department of Chemistry, Durham University , Science Laboratories, Durham DH1 3LE, United Kingdom.,Biophysical Sciences Institute, Durham University , Science Laboratories, Durham DH1 3LE, United Kingdom.,Centre for Sustainable Chemical Processes, Durham University , Science Laboratories, Durham DH1 3LE, United Kingdom
| | - Neil R Cameron
- Department of Chemistry, Durham University , Science Laboratories, Durham DH1 3LE, United Kingdom.,Biophysical Sciences Institute, Durham University , Science Laboratories, Durham DH1 3LE, United Kingdom.,Department of Materials Science and Engineering, Monash University , Clayton, Victoria 3800, Australia.,School of Engineering, University of Warwick , Coventry, CV4 7AL, United Kingdom
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The antimicrobial potential of ionic liquids: A source of chemical diversity for infection and biofilm control. Int J Antimicrob Agents 2015; 46:131-9. [DOI: 10.1016/j.ijantimicag.2015.02.016] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 02/12/2015] [Accepted: 02/13/2015] [Indexed: 01/09/2023]
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Grafting of ionic liquids on stainless steel surface for antibacterial application. Colloids Surf B Biointerfaces 2015; 126:162-8. [DOI: 10.1016/j.colsurfb.2014.12.018] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 12/05/2014] [Accepted: 12/09/2014] [Indexed: 01/04/2023]
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