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Jeong B, Oh JS, Kim DY, Kim DG, Kim YI, Heo J, Lee HK. Ion-Selective Electrode Based on a Novel Biomimetic Nicotinamide Compound for Phosphate Ion Sensor. Polymers (Basel) 2022; 14:polym14163392. [PMID: 36015649 PMCID: PMC9414682 DOI: 10.3390/polym14163392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/10/2022] [Accepted: 08/17/2022] [Indexed: 11/16/2022] Open
Abstract
Phosphorus is not only an import nutrient to aquatic habitats, but it also acts as a growth inhibitor in aquatic ecosystems; however, it also aggravates environmental issues, such as eutrophication. There is a growing interest in rapid phosphorus detection to manage and protect water resources. Due to the large molecular structure and high hydration energy of phosphate ions, ion-selective electrodes (ISEs) remain in their infancy for real-time measurements in terms of practical application. In this study, a newly developed ionophore based on a biomimetic nicotinamide functional group was used to detect phosphate selectively, displaying efficient binding through charge interactions and hydrogen bonds. The ISE membrane containing silicone rubber demonstrated an effective detection performance over a long period of time. With a dynamic range between 10-6 and 10-2 M and a limit of detection of 0.85 × 10-6 M (26 μg/L), the newly synthesized ISE membranes demonstrated selectivity for phosphate ions over other ions, including acetate, sulfate, and chloride.
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Affiliation(s)
- Bongjin Jeong
- ICT Creative Research Laboratory, Electronics & Telecommunications Research Institute, Daejeon 34129, Korea
| | - Jin Seong Oh
- Department of Chemistry, Chungnam National University, Daejeon 34134, Korea
| | - Do Yeob Kim
- ICT Creative Research Laboratory, Electronics & Telecommunications Research Institute, Daejeon 34129, Korea
| | - Dong Gyu Kim
- Department of Chemistry, Chungnam National University, Daejeon 34134, Korea
| | - Young Il Kim
- Department of Chemistry, Chungnam National University, Daejeon 34134, Korea
| | - Jungseok Heo
- Department of Chemistry, Chungnam National University, Daejeon 34134, Korea
- Correspondence: (J.H.); (H.-K.L.)
| | - Hyung-Kun Lee
- ICT Creative Research Laboratory, Electronics & Telecommunications Research Institute, Daejeon 34129, Korea
- Correspondence: (J.H.); (H.-K.L.)
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Partipilo M, Ewins EJ, Frallicciardi J, Robinson T, Poolman B, Slotboom DJ. Minimal Pathway for the Regeneration of Redox Cofactors. JACS AU 2021; 1:2280-2293. [PMID: 34984417 PMCID: PMC8717395 DOI: 10.1021/jacsau.1c00406] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Indexed: 06/14/2023]
Abstract
Effective metabolic pathways are essential for the construction of in vitro systems mimicking the biochemical complexity of living cells. Such pathways require the inclusion of a metabolic branch that ensures the availability of reducing equivalents. Here, we built a minimal enzymatic pathway confinable in the lumen of liposomes, in which the redox status of the nicotinamide cofactors NADH and NADPH is controlled by an externally provided formate. Formic acid permeates the membrane where a luminal formate dehydrogenase uses NAD+ to form NADH and carbon dioxide. Carbon dioxide diffuses out of the liposomes, leaving only the reducing equivalents in the lumen. A soluble transhydrogenase subsequently utilizes NADH for reduction of NADP+ thereby making NAD+ available again for the first reaction. The pathway is functional in liposomes ranging from a few hundred nanometers in diameter (large unilamellar vesicles) up to several tens of micrometers (giant unilamellar vesicles) and remains active over a period of 7 days. We demonstrate that the downstream biochemical process of reduction of glutathione disulfide can be driven by the transfer of reducing equivalents from formate via NAD(P)H, thereby providing a versatile set of electron donors for reductive metabolism.
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Affiliation(s)
- Michele Partipilo
- Department
of Biochemistry, Groningen Institute of Biomolecular Sciences &
Biotechnology, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Eleanor J. Ewins
- Department
of Biochemistry, Groningen Institute of Biomolecular Sciences &
Biotechnology, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Jacopo Frallicciardi
- Department
of Biochemistry, Groningen Institute of Biomolecular Sciences &
Biotechnology, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Tom Robinson
- Department
of Theory & Bio-Systems, Max Planck
Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Bert Poolman
- Department
of Biochemistry, Groningen Institute of Biomolecular Sciences &
Biotechnology, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Dirk Jan Slotboom
- Department
of Biochemistry, Groningen Institute of Biomolecular Sciences &
Biotechnology, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Faroux JM, Borba A, Ureta MM, Tymczyszyn EE, Gomez-Zavaglia A. A combined approach of electronic spectroscopy and quantum chemical calculations to assess model membrane oxidation pathways. NEW J CHEM 2021. [DOI: 10.1039/d1nj03685h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Assessment of lipid oxidation pathways using UV spectroscopy and quantum chemical calculations.
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Affiliation(s)
- J. M. Faroux
- Center for Research and Development in Food Cryotechnology (CIDCA, CCT-CONICET La Plata) RA1900, La Plata, Argentina
| | - A. Borba
- CIEPQPF – Department of Chemical Engineering, University of Coimbra, P-3030-790 Coimbra, Portugal
| | - M. M. Ureta
- Center for Research and Development in Food Cryotechnology (CIDCA, CCT-CONICET La Plata) RA1900, La Plata, Argentina
| | - E. E. Tymczyszyn
- Laboratorio de Microbiología Molecular – Departamento de Ciencia y Tecnología – Universidad Nacional de Quilmes, Bernal, Buenos Aires, Argentina
| | - A. Gomez-Zavaglia
- Center for Research and Development in Food Cryotechnology (CIDCA, CCT-CONICET La Plata) RA1900, La Plata, Argentina
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Peters BJ, Van Cleave C, Haase AA, Hough JPB, Giffen-Kent KA, Cardiff GM, Sostarecz AG, Crick DC, Crans DC. Structure Dependence of Pyridine and Benzene Derivatives on Interactions with Model Membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:8939-8951. [PMID: 29958493 PMCID: PMC6106790 DOI: 10.1021/acs.langmuir.8b01661] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Pyridine-based small-molecule drugs, vitamins, and cofactors are vital for many cellular processes, but little is known about their interactions with membrane interfaces. These specific membrane interactions of these small molecules or ions can assist in diffusion across membranes or reach a membrane-bound target. This study explores how minor differences in small molecules (isoniazid, benzhydrazide, isonicotinamide, nicotinamide, picolinamide, and benzamide) can affect their interactions with model membranes. Langmuir monolayer studies of dipalmitoylphosphatidylcholine (DPPC) or dipalmitoylphosphatidylethanolamine (DPPE), in the presence of the molecules listed, show that isoniazid and isonicotinamide affect the DPPE monolayer at lower concentrations than the DPPC monolayer, demonstrating a preference for one phospholipid over the other. The Langmuir monolayer studies also suggest that nitrogen content and stereochemistry of the small molecule can affect the phospholipid monolayers differently. To determine the molecular interactions of the simple N-containing aromatic pyridines with a membrane-like interface, 1H one-dimensional NMR and 1H-1H two-dimensional NMR techniques were utilized to obtain information about the position and orientation of the molecules of interest within aerosol-OT (AOT) reverse micelles. These studies show that all six of the molecules reside near the AOT sulfonate headgroups and ester linkages in similar positions, but nicotinamide and picolinamide tilt at the water-AOT interface to varying degrees. Combined, these studies demonstrate that small structural changes of small N-containing molecules can affect their specific interactions with membrane-like interfaces and specificity toward different membrane components.
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Affiliation(s)
| | | | | | | | | | | | - Audra G Sostarecz
- Department of Chemistry , Monmouth College , Monmouth , Illinois 61462 , United States
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Choi Y, Attwood SJ, Hoopes MI, Drolle E, Karttunen M, Leonenko Z. Melatonin directly interacts with cholesterol and alleviates cholesterol effects in dipalmitoylphosphatidylcholine monolayers. SOFT MATTER 2014; 10:206-213. [PMID: 24651707 DOI: 10.1039/c3sm52064a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Melatonin is a pineal hormone that has been shown to have protective effects in several diseases that are associated with cholesterol dysregulation, including cardiovascular disease, Alzheimer's disease, and certain types of cancers. Cholesterol is a major membrane constituent with both a structural and functional influence. It is also known that melatonin readily partitions into cellular membranes. We investigated the effects of melatonin and cholesterol on the structure and physical properties of a 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) monolayer as a simple membrane model using the Langmuir-Blodgett (L-B) monolayer technique and molecular dynamics (MD) simulations. We report that melatonin increases the area per lipid and elastic compressibility of the DPPC monolayer in a concentration dependent manner, while cholesterol has the opposite effect. When both melatonin and cholesterol were present in the monolayer, the compression isotherms showed normalization of the area per molecule towards that of the pure DPPC monolayer, thus indicating that melatonin counteracts and alleviates cholesterol's effects. Atomistic MD simulations of melatonin enriched DPPC systems correlate with our experimental findings and illustrate the structural effects of both cholesterol and melatonin. Our results suggest that melatonin is able to lessen the influence of cholesterol through two different mechanisms. Firstly, we have shown that melatonin has a fluidizing effect on monolayers comprising only lipid molecules. Secondly, we also observe that melatonin interacts directly with cholesterol. Our findings suggest a direct nonspecific interaction of melatonin may be a mechanism involved in reducing cholesterol associated membrane effects, thus suggesting the existence of a new mechanism of melatonin's action. This may have important biological relevance in addition to the well-known anti-oxidative and receptor binding effects.
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Affiliation(s)
- Youngjik Choi
- Department of Biology, University of Waterloo, 200 University Avenue West, Waterloo, ON, CanadaN2L 3G1.
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Ostroumova OS, Efimova SS, Schagina LV. Changes of dipole potential of phospholipid membranes resulted from flavonoid adsorption. Biophysics (Nagoya-shi) 2013. [DOI: 10.1134/s0006350913030123] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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7
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Efimova SS, Ostroumova OS. Effect of dipole modifiers on the magnitude of the dipole potential of sterol-containing bilayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:9908-14. [PMID: 22702338 DOI: 10.1021/la301653s] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The effects of various subclasses of flavonoids, Rose Bengal, and different styrylpyridinium dyes on the magnitude of the dipole potential of membranes composed of pure phospholipids and sterol-containing bilayers were investigated. Changes in the steady-state membrane conductance induced by cation-ionophore complexes were measured to examine the changes in the dipole potential of lipid bilayers. The characteristic parameters of the Langmuir adsorption isotherm for different flavonoids and Rose Bengal and the slope of the linear dependence of the dipole potential change on the aqueous concentrations of RH dyes were estimated. Chalcones (phloretin and phloridzin) and flavonols (quercetin and myricetin) strictly decrease the dipole potential of phospholipid- and sterol-containing membranes; the unsaturation of the C-ring and the hydrophobicity of the molecule contribute to the ability of the flavonoid to reduce the bilayer dipole potential. Rose Bengal decreases the magnitude of the bilayer dipole potential to a similar extent, but its affinity for membrane lipids is higher; the effects of RH dyes, chalcones, and phloroglucinol are determined by sterol concentration and type.
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Affiliation(s)
- Svetlana S Efimova
- Institute of Cytology of the Russian Academy of Sciences, St. Petersburg 194064, Russia
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Herrera FE, Bouchet A, Lairion F, Disalvo EA, Pantano S. Molecular Dynamics Study of the Interaction of Arginine with Phosphatidylcholine and Phosphatidylethanolamine Bilayers. J Phys Chem B 2012; 116:4476-83. [DOI: 10.1021/jp2096357] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fernando E. Herrera
- Institut Pasteur de Montevideo, Calle Mataojo 2020. CP 11400 Montevideo,
Uruguay
- Consejo Nacional
de Investigaciones
Científicas y Técnicas (CONICET), Departamento de Física,
Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, C.C. 242, Ciudad
Universitaria, C.P. S3000ZAA, Santa Fe, Argentina
| | - Ana Bouchet
- Laboratorio de Fisicoquímica
de Membranas Lipídicas, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 2°P
(1113), Buenos Aires, Argentina
| | - Fabiana Lairion
- Laboratorio de Fisicoquímica
de Membranas Lipídicas, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 2°P
(1113), Buenos Aires, Argentina
| | - E. Aníbal Disalvo
- Laboratorio de Fisicoquímica
de Membranas Lipídicas, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 2°P
(1113), Buenos Aires, Argentina
| | - Sergio Pantano
- Institut Pasteur de Montevideo, Calle Mataojo 2020. CP 11400 Montevideo,
Uruguay
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