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Otosu T, Yamaguchi S. Leaflet-specific Lipid Diffusion Revealed by Fluorescence Lifetime Correlation Analyses. CHEM LETT 2020. [DOI: 10.1246/cl.200539] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Takuhiro Otosu
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan
| | - Shoichi Yamaguchi
- Department of Applied Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan
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2
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Morisaku T, Sunada M, Miyazaki A, Sakai T, Matsuo K, Yui H. Dynamic Light Scattering Measurements for Soft Materials on Solid Substrates: Employing Evanescent-wave Illumination and Dark-field Collection with a High Numerical Aperture Microscope Objective. ANAL SCI 2020; 36:1211-1215. [PMID: 32418932 DOI: 10.2116/analsci.20p068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We developed an instrument that allows us to measure dynamic light scattering from soft materials on solid substrates by avoiding strong background due to the reflection light from substrates. In the instrument, samples on substrates are illuminated by evanescent-light field and the resultant scattered light from the samples is collected with a dark-field optical configuration by employing a high numerical aperture microscope objective. We applied the instrument to measure the dynamic properties of supported lipid bilayers (SLBs), which have been widely utilized in industries as functional materials such as biosensors. From the time course of the scattered light from the SLBs, the power spectrum with the broad peak ranging from 10 to 20 kHz is observed. The use of the microscope objectives enables us to apply the instrument to future light scattering imaging for dynamic properties of soft materials supported on various substrates by combining with conventional microscope systems.
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Affiliation(s)
- Toshinori Morisaku
- Water Frontier Science & Technology Research Center, Research Institute for Science & Technology, Tokyo University of Science
| | - Miki Sunada
- Department of Chemistry, Graduate School of Science, Tokyo University of Science
| | | | | | | | - Hiroharu Yui
- Water Frontier Science & Technology Research Center, Research Institute for Science & Technology, Tokyo University of Science.,Department of Chemistry, Graduate School of Science, Tokyo University of Science.,Department of Chemistry, Faculty of Science, Tokyo University of Science
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3
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Rapid and real-time detection of arginine enantiomers by QCM sensor having a Calix[4]arene receptor bearing asymmetric centers. Talanta 2019; 204:172-181. [DOI: 10.1016/j.talanta.2019.05.093] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 05/17/2019] [Accepted: 05/22/2019] [Indexed: 12/27/2022]
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4
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Nikoleli GP. Advanced lipid based biosensors for food analysis. ADVANCES IN FOOD AND NUTRITION RESEARCH 2019; 91:301-321. [PMID: 32035600 DOI: 10.1016/bs.afnr.2019.07.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The investigation of lipid films for the construction of nanosensors has recently given the opportunity to manufacture devices to selectively determine a wide range of food toxicants. Biosensor miniaturization using recent advances in nanotechnology has given the opportunity to investigate novel techniques to immobilize a wide range of enzymes, antibodies and receptors within the lipid film. This chapter reviews novel revent platforms in nanobiosensors based on lipid membranes that are used in food chemistry to determine various food toxicants. Examples of applications are described with an emphasis on novel systems, sensing techniques and nanotechnology-based transduction schemes. The compounds that can be monitored are insecticides, pesticides, herbicides, metals, toxins, hormones, etc. Finally, limitations and future prospects are presented herein on the evaluation/validation and eventually commercialization of the proposed sensors.
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Affiliation(s)
- Georgia-Paraskevi Nikoleli
- Laboratory of Environmental & Sanitary Engineering, Department of Public Health, Faculty of Health and Caring Professions, University of West Attica, Athens, Greece.
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5
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Abraham S, Heckenthaler T, Morgenstern Y, Kaufman Y. Effect of Temperature on the Structure, Electrical Resistivity, and Charge Capacitance of Supported Lipid Bilayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:8709-8715. [PMID: 31244251 DOI: 10.1021/acs.langmuir.9b00726] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Supported lipid bilayers with incorporated membrane proteins have promising potential for diverse applications, such as filtration processes, drug delivery, and biosensors. For these applications, the continuity (lack of defects), electrical resistivity, and charge capacitance of the lipid bilayers are crucial. Here, we highlight the effects of temperature changes and the rate of temperature changes on the vertical and lateral expansion and contraction of lipid bilayers, which in turn affect the lipid bilayer resistivity and capacitance. We focused on lipid bilayers that consist of 50 mol % dimyristoyl- sn-glycero-3-phosphocholine (zwitterionic lipid) and 50 mol % dimyristoyl-3-trimethylammonium-propane (positively charged lipid) lipids. This lipid mixture is known to self-assemble into a continuous lipid bilayer on silicon wafers. It is shown experimentally and explained theoretically that slow cooling (e.g., -0.4 °C min-1) increases the resistivity significantly and reduces the capacitance of lipid bilayers, and these trends are reversed by heating. However, fast cooling (∼ -10 °C min-1 or faster) damages the membrane and reduces the resistivity and capacitance of lipid bilayers to practically zero. Importantly, the addition of 50 mol % cholesterol to lipid bilayers prevents the resistivity and capacitance reduction after fast cooling. It is argued that the ratio of lipid diffusion coefficient to thermal expansion/contraction rate (proportional to the heating/cooling rate) is the crucial parameter that determines the effects of temperature changes on lipids bilayers. A high ratio (fast lipid diffusion) increases the lipid bilayer resistivity and decreases the capacitance upon cooling and vice versa. Similar trends are expected for lipid membranes that consist of other lipids or lipidlike mixtures.
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Affiliation(s)
- Shiju Abraham
- The Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research , Ben-Gurion University of the Negev , Sde Boqer 8499000 , Israel
| | - Tabea Heckenthaler
- The Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research , Ben-Gurion University of the Negev , Sde Boqer 8499000 , Israel
| | - Yakov Morgenstern
- The Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research , Ben-Gurion University of the Negev , Sde Boqer 8499000 , Israel
| | - Yair Kaufman
- The Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research , Ben-Gurion University of the Negev , Sde Boqer 8499000 , Israel
- Center for Bioengineering , University of California Santa Barbara , Santa Barbara , California 93106 , United States
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6
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Abstract
The investigation of lipid films for the construction of biosensors has recently given the opportunity to manufacture devices to selectively detect a wide range of food toxicants, environmental pollutants, and compounds of clinical interest. Biosensor miniaturization using nanotechnological tools has provided novel routes to immobilize various “receptors” within the lipid film. This chapter reviews and exploits platforms in biosensors based on lipid membrane technology that are used in food, environmental, and clinical chemistry to detect various toxicants. Examples of applications are described with an emphasis on novel systems, new sensing techniques, and nanotechnology-based transduction schemes. The compounds that can be monitored are insecticides, pesticides, herbicides, metals, toxins, antibiotics, microorganisms, hormones, dioxins, etc.
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7
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Selective chiral recognition of alanine enantiomers by chiral calix[4]arene coated quartz crystal microbalance sensors. Anal Bioanal Chem 2019; 411:2675-2685. [DOI: 10.1007/s00216-019-01705-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 01/31/2019] [Accepted: 02/21/2019] [Indexed: 12/30/2022]
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8
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Nikoleli GP, Nikolelis DP, Siontorou CG, Nikolelis MT, Karapetis S. The Application of Lipid Membranes in Biosensing. MEMBRANES 2018; 8:E108. [PMID: 30441848 PMCID: PMC6316677 DOI: 10.3390/membranes8040108] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 11/01/2018] [Accepted: 11/12/2018] [Indexed: 12/20/2022]
Abstract
The exploitation of lipid membranes in biosensors has provided the ability to reconstitute a considerable part of their functionality to detect trace of food toxicants and environmental pollutants. This paper reviews recent progress in biosensor technologies based on lipid membranes suitable for food quality monitoring and environmental applications. Numerous biosensing applications based on lipid membrane biosensors are presented, putting emphasis on novel systems, new sensing techniques, and nanotechnology-based transduction schemes. The range of analytes that can be currently using these lipid film devices that can be detected include, insecticides, pesticides, herbicides, metals, toxins, antibiotics, microorganisms, hormones, dioxins, etc. Technology limitations and future prospects are discussed, focused on the evaluation/validation and eventually commercialization of the proposed lipid membrane-based biosensors.
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Affiliation(s)
- Georgia-Paraskevi Nikoleli
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Dept 1, Chemical Sciences, National Technical University of Athens, 9 Iroon Polytechniou St., 15780 Athens, Greece.
| | - Dimitrios P Nikolelis
- Laboratory of Environmental Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis-Kouponia, 15771 Athens, Greece.
| | - Christina G Siontorou
- Laboratory of Simulation of Industrial Processes, Department of Industrial Management and Technology, School of Maritime and Industry, University of Piraeus, 18534 Pireus, Greece.
| | - Marianna-Thalia Nikolelis
- Laboratory of Environmental Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis-Kouponia, 15771 Athens, Greece.
| | - Stephanos Karapetis
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Dept 1, Chemical Sciences, National Technical University of Athens, 9 Iroon Polytechniou St., 15780 Athens, Greece.
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Saini G, Trenchevska O, Howell LJ, Boyd JG, Smith DP, Jain V, Linford MR. Performance Comparison of Three Chemical Vapor Deposited Aminosilanes in Peptide Synthesis: Effects of Silane on Peptide Stability and Purity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:11925-11932. [PMID: 30208711 DOI: 10.1021/acs.langmuir.8b01298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Silicon oxide substrates underwent gas-phase functionalization with various aminosilanes, and the resulting surfaces were evaluated for their suitability as a solid support for solid phase peptide synthesis (SPPS). APTES (3-aminopropyltriethoxysilane), APDEMS (3-aminopropyldiethoxymethylsilane), and APDIPES (3-aminopropyldiisopropylethoxysilane) were individually applied to thermal oxide-terminated silicon substrates via gas-phase deposition. Coated surfaces were characterized by spectroscopic ellipsometry (SE), contact angle goniometry, X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and spectrophotometry. Model oligopeptides with 16 residues were synthesized on the amino surfaces, and the chemical stabilities of the resulting surfaces were evaluated against a stringent side chain deprotection (SCD) step, which contained trifluoroacetic acid (TFA) and trifluoromethanesulfonic acid (TFMSA). Functionalized surface thickness loss during SCD was most acute for APDIPES and the observed relative stability order was APTES > APDEMS > APDIPES. Amino surfaces were evaluated for compatibility with stepwise peptide synthesis where complete deprotection and coupling cycles are paramount. Model trimer syntheses indicated that routine capping of unreacted amines with acetic anhydride significantly increased purity as measured by MALDI-MS. An inverse correlation between the amine loading density and peptide purity was observed. In general, peptide purity was highest for the lowest amine density APDIPES surface.
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Affiliation(s)
- Gaurav Saini
- HealthTell Inc. , Chandler , Arizona 85226 , United States
| | | | - Loren J Howell
- HealthTell Inc. , Chandler , Arizona 85226 , United States
| | - James G Boyd
- HealthTell Inc. , Chandler , Arizona 85226 , United States
| | - David P Smith
- HealthTell Inc. , Chandler , Arizona 85226 , United States
| | - Varun Jain
- Department of Chemistry and Biochemistry , Brigham Young University , Provo , Utah 84602 , United States
| | - Matthew R Linford
- Department of Chemistry and Biochemistry , Brigham Young University , Provo , Utah 84602 , United States
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Encapsulating Networks of Droplet Interface Bilayers in a Thermoreversible Organogel. Sci Rep 2018; 8:6494. [PMID: 29691447 PMCID: PMC5915452 DOI: 10.1038/s41598-018-24720-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 04/04/2018] [Indexed: 02/08/2023] Open
Abstract
The development of membrane-based materials that exhibit the range and robustness of autonomic functions found in biological systems remains elusive. Droplet interface bilayers (DIBs) have been proposed as building blocks for such materials, owing to their simplicity, geometry, and capability for replicating cellular phenomena. Similar to how individual cells operate together to perform complex tasks and functions in tissues, networks of functionalized DIBs have been assembled in modular/scalable networks. Here we present the printing of different configurations of picoliter aqueous droplets in a bath of thermoreversible organogel consisting of hexadecane and SEBS triblock copolymers. The droplets are connected by means of lipid bilayers, creating a network of aqueous subcompartments capable of communicating and hosting various types of chemicals and biomolecules. Upon cooling, the encapsulating organogel solidifies to form self-supported liquid-in-gel, tissue-like materials that are robust and durable. To test the biomolecular networks, we functionalized the network with alamethicin peptides and alpha-hemolysin (αHL) channels. Both channels responded to external voltage inputs, indicating the assembly process does not damage the biomolecules. Moreover, we show that the membrane properties may be regulated through the deformation of the surrounding gel.
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11
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Sachs F. Mechanical Transduction and the Dark Energy of Biology. Biophys J 2018; 114:3-9. [PMID: 29320693 PMCID: PMC5984904 DOI: 10.1016/j.bpj.2017.10.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 09/26/2017] [Accepted: 10/11/2017] [Indexed: 12/27/2022] Open
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12
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Skalová Š, Vyskočil V, Barek J, Navrátil T. Model Biological Membranes and Possibilities of Application of Electrochemical Impedance Spectroscopy for their Characterization. ELECTROANAL 2017. [DOI: 10.1002/elan.201700649] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Štěpánka Skalová
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences; Dolejškova 3 182 23 Prague 8 Czech Republic
- Charles University; Faculty of Science, Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry; Hlavova 2030/8 128 43 Prague 2 Czech Republic
| | - Vlastimil Vyskočil
- Charles University; Faculty of Science, Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry; Hlavova 2030/8 128 43 Prague 2 Czech Republic
| | - Jiří Barek
- Charles University; Faculty of Science, Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry; Hlavova 2030/8 128 43 Prague 2 Czech Republic
| | - Tomáš Navrátil
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences; Dolejškova 3 182 23 Prague 8 Czech Republic
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Kafi AKM, Wali Q, Jose R, Biswas TK, Yusoff MM. A glassy carbon electrode modified with SnO2 nanofibers, polyaniline and hemoglobin for improved amperometric sensing of hydrogen peroxide. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2479-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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