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Sannigrahi A, Rai VH, Chalil MV, Chakraborty D, Meher SK, Roy R. A Versatile Suspended Lipid Membrane System for Probing Membrane Remodeling and Disruption. MEMBRANES 2022; 12:1190. [PMID: 36557095 PMCID: PMC9784602 DOI: 10.3390/membranes12121190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/12/2022] [Accepted: 10/18/2022] [Indexed: 06/17/2023]
Abstract
Artificial membrane systems can serve as models to investigate molecular mechanisms of different cellular processes, including transport, pore formation, and viral fusion. However, the current, such as SUVs, GUVs, and the supported lipid bilayers suffer from issues, namely high curvature, heterogeneity, and surface artefacts, respectively. Freestanding membranes provide a facile solution to these issues, but current systems developed by various groups use silicon or aluminum oxide wafers for fabrication that involves access to a dedicated nanolithography facility and high cost while conferring poor membrane stability. Here, we report the development, characterization and applications of an easy-to-fabricate suspended lipid bilayer (SULB) membrane platform leveraging commercial track-etched porous filters (PCTE) with defined microwell size. Our SULB system offers a platform to study the lipid composition-dependent structural and functional properties of membranes with exceptional stability. With dye entrapped in PCTE microwells by SULB, we show that sphingomyelin significantly augments the activity of pore-forming toxin, Cytolysin A (ClyA) and the pore formation induces lipid exchange between the bilayer leaflets. Further, we demonstrate high efficiency and rapid kinetics of membrane fusion by dengue virus in our SULB platform. Our suspended bilayer membrane mimetic offers a novel platform to investigate a large class of biomembrane interactions and processes.
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2
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Sun Y, Zang X, Sun Y, Wang L, Gao Z. Lipid membranes supported by planar porous substrates. Chem Phys Lipids 2020; 228:104893. [PMID: 32097619 DOI: 10.1016/j.chemphyslip.2020.104893] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 02/10/2020] [Indexed: 12/18/2022]
Abstract
Biological membranes play key roles in cell life, but their intrinsic complexity motivated the study and development of artificial lipid membranes with the primary aim to reconstitute and understand the natural functions in vitro. Porous-supported lipid membrane (pSLM) has emerged as a flexible platform for studying the surface chemistry of the cell due to their high stability and fluidity, and their ability to study the transmembrane process of the molecules. In this review, the pSLM, for the first time, to our knowledge, was divided into three types according to the way of the porous materials support the lipid membrane, containing the lipid membrane on the pores of the porous materials, the lipid membrane on both sides of the porous materials, the lipid membrane in the pores of the porous materials. All of these pSLMs were systematically elaborated from several aspects, including the substrates, formation, and characterization. Meanwhile, the advantages and disadvantages of each model membranes were summarized. Finally, suggestions for selecting appropriate pSLM and future directions in this area are discussed.
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Affiliation(s)
- Yanping Sun
- Department of Pharmacy, Hebei University of Science and Technology, Shijiazhuang, 050018, China; State Key Laboratory Breeding Base - Hebei Province Key Laboratory of Molecular Chemistry for Drugs, Hebei University of Science and Technology, Shijiazhuang, 050018, China; Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
| | - Xianghuan Zang
- Department of Pharmacy, Hebei University of Science and Technology, Shijiazhuang, 050018, China
| | - Yongjun Sun
- Department of Pharmacy, Hebei University of Science and Technology, Shijiazhuang, 050018, China; Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
| | - Long Wang
- State Key Laboratory Breeding Base - Hebei Province Key Laboratory of Molecular Chemistry for Drugs, Hebei University of Science and Technology, Shijiazhuang, 050018, China; Department of Family and Consumer Sciences, California State University, Long Beach, CA, 90840, USA.
| | - Zibin Gao
- Department of Pharmacy, Hebei University of Science and Technology, Shijiazhuang, 050018, China; State Key Laboratory Breeding Base - Hebei Province Key Laboratory of Molecular Chemistry for Drugs, Hebei University of Science and Technology, Shijiazhuang, 050018, China; Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China.
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3
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Miyashita W, Saeki D, Matsuyama H. Formation of supported lipid bilayers on porous polymeric substrates induced by hydrophobic interaction. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.11.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4
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Tsemperouli M, Sugihara K. Characterization of di-4-ANEPPS with nano-black lipid membranes. NANOSCALE 2018; 10:1090-1098. [PMID: 29271448 DOI: 10.1039/c7nr05863b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report a platform based on lateral nano-black lipid membranes (nano-BLMs), where electrical measurements and fluorescence microscopy setup are combined, for the calibration of di-4-ANEPPS, a common voltage sensitive dye (VSD). The advantage of this setup is (1) its flexibility in the choice of lipids and applied voltages, (2) its high stability that enables a high voltage (500 mV) application and long-time measurements and (3) its fluorescence microscopy readout, which can be directly correlated with other fluorescence microscopy experiments using VSDs (e.g. membrane potential measurements in living cells). Using this setup, we observed that the calibration curve of di-4-ANEPPS is strongly dependent on the net electric charge of the lipids. The developed setup can be used to calibrate VSDs in different lipid environments in order to better understand their fundamental voltage-sensing mechanism in the future.
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Affiliation(s)
- Maria Tsemperouli
- Department of Physical Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland.
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5
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Khan MS, Dosoky NS, Mustafa G, Patel D, Berdiev B, Williams JD. Electrophysiology of Epithelial Sodium Channel (ENaC) Embedded in Supported Lipid Bilayer Using a Single Nanopore Chip. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:13680-13688. [PMID: 29131643 DOI: 10.1021/acs.langmuir.7b02404] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Nanopore-based technologies are highly adaptable supports for developing label-free sensor chips to characterize lipid bilayers, membrane proteins, and nucleotides. We utilized a single nanopore chip to study the electrophysiology of the epithelial Na+ channel (ENaC) incorporated in supported lipid membrane (SLM). An isolated nanopore was developed inside the silicon cavity followed by fusing large unilamellar vesicles (LUVs) of DPPS (1,2-dipalmitoyl-sn-glycero-3-phosphoserine) and DPPE (1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine) to produce a solvent-free SLM with giga-ohm (GΩ) sealed impedance. The presence and thickness of SLM on the nanopore chip were confirmed using atomic force spectroscopy. The functionality of SLM with and without ENaC was verified in terms of electrical impedance and capacitance by sweeping the frequency from 0.01 Hz to 100 kHz using electrochemical impedance spectroscopy. The nanopore chip exhibits long-term stability for the lipid bilayer before (144 h) and after (16 h) incorporation of ENaC. Amiloride, an inhibitor of ENaC, was utilized at different concentrations to test the integrity of fused ENaC in the lipid bilayer supported on a single nanopore chip. The developed model presents excellent electrical properties and improved mechanical stability of SLM, making this technology a reliable platform to study ion channel electrophysiology.
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Affiliation(s)
- Muhammad Shuja Khan
- Electrical and Computer Engineering Department, University of Alabama in Huntsville , Huntsville, Alabama 35899, United States
| | - Noura Sayed Dosoky
- Biotechnology Science and Engineering Program, University of Alabama in Huntsville , Huntsville, Alabama 35899, United States
| | - Ghulam Mustafa
- Department of Nuclear Medicine, The State University of New York at Buffalo , Buffalo, New York 14214, United States
| | - Darayas Patel
- Department of Mathematics and Computer Science, Oakwood University , Huntsville, Alabama 35896, United States
| | - Bakhrom Berdiev
- Department of Biomedical Sciences, Nazarbayev University School of Medicine , Astana 010000, Kazakhstan
| | - John Dalton Williams
- Electrical and Computer Engineering Department, University of Alabama in Huntsville , Huntsville, Alabama 35899, United States
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6
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Ronen R, Kaufman Y, Freger V. Formation of pore-spanning lipid membrane and cross-membrane water and ion transport. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2016.09.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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7
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Electrochemical impedance spectroscopy for black lipid membranes fused with channel protein supported on solid-state nanopore. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2016; 45:843-852. [DOI: 10.1007/s00249-016-1156-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 03/25/2016] [Accepted: 04/06/2016] [Indexed: 01/08/2023]
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8
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Gupta G, Staggs K, Mohite AD, Baldwin JK, Iyer S, Mukundan R, Misra A, Antoniou A, Dattelbaum AM. Fluid and Resistive Tethered Lipid Membranes on Nanoporous Substrates. J Phys Chem B 2015; 119:12868-76. [DOI: 10.1021/acs.jpcb.5b04482] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Antonia Antoniou
- School
of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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9
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Wang X, Ma S, Su Y, Zhang Y, Bi H, Zhang L, Han X. High Impedance Droplet–Solid Interface Lipid Bilayer Membranes. Anal Chem 2015; 87:2094-9. [PMID: 25600185 DOI: 10.1021/ac502953v] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Xuejing Wang
- State
Key Laboratory of Urban Water Resource and Environment, School of
Chemical Engineering and Technology, Harbin Institute of Technology, No. 92 West Da-Zhi Street, Harbin 150001, China
| | - Shenghua Ma
- State
Key Laboratory of Urban Water Resource and Environment, School of
Chemical Engineering and Technology, Harbin Institute of Technology, No. 92 West Da-Zhi Street, Harbin 150001, China
| | - Yingchun Su
- State
Key Laboratory of Urban Water Resource and Environment, School of
Chemical Engineering and Technology, Harbin Institute of Technology, No. 92 West Da-Zhi Street, Harbin 150001, China
| | - Ying Zhang
- State
Key Laboratory of Urban Water Resource and Environment, School of
Chemical Engineering and Technology, Harbin Institute of Technology, No. 92 West Da-Zhi Street, Harbin 150001, China
| | - Hongmei Bi
- State
Key Laboratory of Urban Water Resource and Environment, School of
Chemical Engineering and Technology, Harbin Institute of Technology, No. 92 West Da-Zhi Street, Harbin 150001, China
| | - Lixue Zhang
- Qingdao
Key Lab of Solar Energy Utilization and Energy Storage Technology,
Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao 266101, China
| | - Xiaojun Han
- State
Key Laboratory of Urban Water Resource and Environment, School of
Chemical Engineering and Technology, Harbin Institute of Technology, No. 92 West Da-Zhi Street, Harbin 150001, China
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10
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Beales PA, Ciani B, Cleasby AJ. Nature's lessons in design: nanomachines to scaffold, remodel and shape membrane compartments. Phys Chem Chem Phys 2015; 17:15489-507. [DOI: 10.1039/c5cp00480b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Our understanding of the membrane sculpting capabilities of proteins from experimental model systems could be used to construct functional compartmentalised architectures for the engineering of synthetic cells.
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Affiliation(s)
- Paul A. Beales
- School of Chemistry and Astbury Centre for Structural Molecular Biology
- University of Leeds
- Leeds LS2 9JT
- UK
| | - Barbara Ciani
- Centre for Membrane Interaction and Dynamics
- Department of Chemistry
- University of Sheffield
- Sheffield S3 7HF
- UK
| | - Alexa J. Cleasby
- Centre for Membrane Interaction and Dynamics
- Department of Chemistry
- University of Sheffield
- Sheffield S3 7HF
- UK
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11
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Madrid E, Horswell SL. Effect of Electric Field on Structure and Dynamics of Bilayers Formed From Anionic Phospholipids. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.01.035] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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12
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Connelly LS, Meckes B, Larkin J, Gillman AL, Wanunu M, Lal R. Graphene nanopore support system for simultaneous high-resolution AFM imaging and conductance measurements. ACS APPLIED MATERIALS & INTERFACES 2014; 6:5290-6. [PMID: 24581087 PMCID: PMC4232248 DOI: 10.1021/am500639q] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Accepted: 02/28/2014] [Indexed: 05/24/2023]
Abstract
Accurately defining the nanoporous structure and sensing the ionic flow across nanoscale pores in thin films and membranes has a wide range of applications, including characterization of biological ion channels and receptors, DNA sequencing, molecule separation by nanoparticle films, sensing by block co-polymers films, and catalysis through metal-organic frameworks. Ionic conductance through nanopores is often regulated by their 3D structures, a relationship that can be accurately determined only by their simultaneous measurements. However, defining their structure-function relationships directly by any existing techniques is still not possible. Atomic force microscopy (AFM) can image the structures of these pores at high resolution in an aqueous environment, and electrophysiological techniques can measure ion flow through individual nanoscale pores. Combining these techniques is limited by the lack of nanoscale interfaces. We have designed a graphene-based single-nanopore support (∼5 nm thick with ∼20 nm pore diameter) and have integrated AFM imaging and ionic conductance recording using our newly designed double-chamber recording system to study an overlaid thin film. The functionality of this integrated system is demonstrated by electrical recording (<10 pS conductance) of suspended lipid bilayers spanning a nanopore and simultaneous AFM imaging of the bilayer.
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Affiliation(s)
- Laura S. Connelly
- Materials Science and Engineering
Program, Department of Bioengineering, and Department of Mechanical and Aerospace Engineering, University of California−San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Brian Meckes
- Materials Science and Engineering
Program, Department of Bioengineering, and Department of Mechanical and Aerospace Engineering, University of California−San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Joseph Larkin
- Department of Physics, Northeastern University, 110 Forsyth Street, Boston, Massachusetts 02115, United States
| | - Alan L. Gillman
- Materials Science and Engineering
Program, Department of Bioengineering, and Department of Mechanical and Aerospace Engineering, University of California−San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Meni Wanunu
- Department of Physics, Northeastern University, 110 Forsyth Street, Boston, Massachusetts 02115, United States
| | - Ratnesh Lal
- Materials Science and Engineering
Program, Department of Bioengineering, and Department of Mechanical and Aerospace Engineering, University of California−San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
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13
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Simon A, Gounou C, Tan S, Tiefenauer L, Di Berardino M, Brisson AR. Free-standing lipid films stabilized by Annexin-A5. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2013; 1828:2739-44. [DOI: 10.1016/j.bbamem.2013.07.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Revised: 07/16/2013] [Accepted: 07/24/2013] [Indexed: 10/26/2022]
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14
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Baker CA, Bright LK, Aspinwall CA. Photolithographic fabrication of microapertures with well-defined, three-dimensional geometries for suspended lipid membrane studies. Anal Chem 2013; 85:9078-86. [PMID: 23987300 DOI: 10.1021/ac401639n] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Robust and high-density biosensors incorporating suspended lipid membranes require microfabricated apertures that can be readily integrated into complex analysis systems. Apertures with well-defined, three-dimensional geometries enable the formation of suspended lipid membranes and facilitate reduced aperture size compared to vertical-walled apertures. Unfortunately, existing methods of producing apertures with well-defined, three-dimensional geometries are based on complex and expensive fabrication procedures, some of which yield apertures in excessively fragile thin-film materials. Here, we describe a microfabrication method utilizing incline and rotate lithography that achieves sloped-wall microapertures in SU-8 polymer substrates with precision control of the aperture diameter, substrate thickness, and wall angle. This approach is simple, is of low cost, and is readily scaled up to allow highly reproducible parallel fabrication. The effect of the incident angle of UV exposure and the size of photomask features on the aperture geometry were investigated, yielding aperture diameters as small as 7 μm and aperture wall angles ranging from 8° to 36° measured from the normal axis. Black lipid membranes were suspended across the apertures and showed normalized conductance values of 0.02-0.05 pS μm(-2) and breakdown voltages of 400-600 mV. The functionality of the resulting sloped-wall microapertures was validated via measurement of reconstituted α-hemolysin activity and the voltage-gated channel activity of alamethicin.
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Affiliation(s)
- Christopher A Baker
- Department of Chemistry and Biochemistry, University of Arizona , 1306 East University Boulevard, Tucson, Arizona 85721, United States
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15
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Jadhav SR, Rao KS, Zheng Y, Garavito RM, Worden RM. Voltage dependent closure of PorB class II porin from Neisseria meningitidis investigated using impedance spectroscopy in a tethered bilayer lipid membrane interface. J Colloid Interface Sci 2013; 390:211-6. [PMID: 23083768 DOI: 10.1016/j.jcis.2012.09.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 09/13/2012] [Accepted: 09/14/2012] [Indexed: 01/16/2023]
Abstract
Electrochemical impedance spectroscopy (EIS) was used to characterize voltage-dependent closure of PorB class II (PorBII) porin from Neisseria meningitidis incorporated in a tethered bilayer lipid membrane (tBLM). The tBLM's lower leaflet was fabricated by depositing a self assembled monolayer (SAM) of 1,2-dipalmitoyl-sn-glycero-3-phosphothioethanol (DPPTE) on a gold electrode, and the upper leaflet was formed by depositing1,2-dioleoyl-sn-glycero-3-phoshocholine (DOPC) liposomes. At 0mV bias DC potential, incorporation of PorBII decreased the membrane resistance (R(m)) from 2.5 MΩc m(2) to 0.6 MΩ cm(2), giving a ΔR(m) of 1.9 MΩ cm(2) and a normalized ΔR(m) (ΔR(m) divided by the R(m) of the tBLM without PorBII) of 76%. When the bias DC potential was increased to 200 mV, the normalized ΔR(m) value decreased to 20%. The effect of applied voltage on ΔR(m) was completely reversible, suggesting voltage-dependent closure of PorBII. The voltage dependence of PorBII was further studied in a planar bilayer lipid membrane made from 1,2-diphytanoyl-sn-glycero-3-phosphocholine (DPhytPC). Following a single insertion event, PorBII exhibited multiple conductance states, with reversible, voltage-dependent closure of PorBII porin occurring at high transmembrane potentials. The trimetric porin closed in three discrete steps, each step corresponding to closure of one conducting monomer unit. The most probable single channel conductance was 4.2 nS. The agreement between results obtained with the tBLM and pBLM platforms demonstrates the utility of EIS to screen channel proteins immobilized in tBLM for voltage-gated behavior.
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Affiliation(s)
- Sachin R Jadhav
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI 48824, USA
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16
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Frese D, Steltenkamp S, Schmitz S, Steinem C. In situ generation of electrochemical gradients across pore-spanning membranes. RSC Adv 2013. [DOI: 10.1039/c3ra42723d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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17
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Abstract
Lipid bilayers are natural barriers of biological cells and cellular compartments. Membrane proteins integrated in biological membranes enable vital cell functions such as signal transduction and the transport of ions or small molecules. In order to determine the activity of a protein of interest at defined conditions, the membrane protein has to be integrated into artificial lipid bilayers immobilized on a surface. For the fabrication of such biosensors expertise is required in material science, surface and analytical chemistry, molecular biology and biotechnology. Specifically, techniques are needed for structuring surfaces in the micro- and nanometer scale, chemical modification and analysis, lipid bilayer formation, protein expression, purification and solubilization, and most importantly, protein integration into engineered lipid bilayers. Electrochemical and optical methods are suitable to detect membrane activity-related signals. The importance of structural knowledge to understand membrane protein function is obvious. Presently only a few structures of membrane proteins are solved at atomic resolution. Functional assays together with known structures of individual membrane proteins will contribute to a better understanding of vital biological processes occurring at biological membranes. Such assays will be utilized in the discovery of drugs, since membrane proteins are major drug targets.
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Castell OK, Berridge J, Wallace MI. Quantification of Membrane Protein Inhibition by Optical Ion Flux in a Droplet Interface Bilayer Array. Angew Chem Int Ed Engl 2012; 51:3134-8. [DOI: 10.1002/anie.201107343] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Revised: 01/24/2012] [Indexed: 01/01/2023]
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19
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Castell OK, Berridge J, Wallace MI. Quantification of Membrane Protein Inhibition by Optical Ion Flux in a Droplet Interface Bilayer Array. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201107343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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20
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Lipid Bilayer Membrane Arrays: Fabrication and Applications. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2012; 131:121-52. [DOI: 10.1007/10_2012_135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Han X, Qi G, Xu X, Wang L. Formation of Lipid Bilayer Microarrays on Photo-Oxidized Polystyrene Surfaces. Chemistry 2011; 17:14741-4. [DOI: 10.1002/chem.201102941] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Indexed: 11/12/2022]
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22
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Funayama JC, Pucca MB, Roncolato EC, Bertolini TB, Campos LB, Barbosa JE. Production of Human Antibody Fragments Binding to Melittin and Phospholipase A2 in Africanised Bee Venom: Minimising Venom Toxicity. Basic Clin Pharmacol Toxicol 2011; 110:290-7. [DOI: 10.1111/j.1742-7843.2011.00821.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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23
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Lundgren A, Hedlund J, Andersson O, Brändén M, Kunze A, Elwing H, Höök F. Resonance-Mode Electrochemical Impedance Measurements of Silicon Dioxide Supported Lipid Bilayer Formation and Ion Channel Mediated Charge Transport. Anal Chem 2011; 83:7800-6. [DOI: 10.1021/ac201273t] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Anders Lundgren
- Department of Cell and Molecular Biology, University of Gothenburg, SE-405 30 Gothenburg, Sweden
| | - Julia Hedlund
- Stena Center 1B, Layerlab AB, SE-41292 Gothenburg, Sweden
| | - Olof Andersson
- Stena Center 1B, Layerlab AB, SE-41292 Gothenburg, Sweden
| | - Magnus Brändén
- Stena Center 1B, Layerlab AB, SE-41292 Gothenburg, Sweden
- Department of Applied Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Angelika Kunze
- Department of Applied Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Hans Elwing
- Department of Cell and Molecular Biology, University of Gothenburg, SE-405 30 Gothenburg, Sweden
| | - Fredrik Höök
- Department of Applied Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
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Demarche S, Sugihara K, Zambelli T, Tiefenauer L, Vörös J. Techniques for recording reconstituted ion channels. Analyst 2011; 136:1077-89. [PMID: 21267480 DOI: 10.1039/c0an00828a] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review describes and discusses techniques useful for monitoring the activity of protein ion channels in vitro. In the first section the biological importance and the classification of ion channels are outlined in order to justify the strong motivation for dealing with this important class of membrane proteins. The expression, reconstitution and integration of recombinant proteins into lipid bilayers are crucial steps to obtain consistent data when working with ion channels. In the second section recording techniques used in research are presented. Since this review focuses on analytical systems bearing reconstituted ion channels the industrial most important patch-clamp techniques of cells are only briefly mentioned. In section three, artificial systems developed in the last decades are described while the emerging technologies using nanostructured supports or microfluidic systems are presented in section four. Finally, the remaining challenges of membrane protein analysis and its potential applications are briefly outlined.
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Affiliation(s)
- Sophie Demarche
- Biomolecular Research, Paul Scherrer Institut (PSI), CH-5232 Villigen, Switzerland
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Martínez-Máñez R, Sancenón F, Biyikal M, Hecht M, Rurack K. Mimicking tricks from nature with sensory organic–inorganic hybrid materials. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm11210d] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Thapliyal T, Poulos JL, Schmidt JJ. Automated lipid bilayer and ion channel measurement platform. Biosens Bioelectron 2011; 26:2651-4. [DOI: 10.1016/j.bios.2010.01.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2009] [Revised: 01/16/2010] [Accepted: 01/19/2010] [Indexed: 10/19/2022]
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Sugihara K, Vörös J, Zambelli T. The Resistance of Polyelectrolyte Multilayers in a Free-Hanging Configuration. J Phys Chem B 2010; 114:13982-7. [DOI: 10.1021/jp107362y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kaori Sugihara
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Gloriastrasse 35, CH-8092 Zurich, Switzerland
| | - János Vörös
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Gloriastrasse 35, CH-8092 Zurich, Switzerland
| | - Tomaso Zambelli
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Gloriastrasse 35, CH-8092 Zurich, Switzerland
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Sugihara K, Vörös J, Zambelli T. A gigaseal obtained with a self-assembled long-lifetime lipid bilayer on a single polyelectrolyte multilayer-filled nanopore. ACS NANO 2010; 4:5047-5054. [PMID: 20687537 DOI: 10.1021/nn100773q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A lipid bilayer with gigaohm resistance was fabricated over a single 800 nm pore in a Si3N4 chip using 50 nm liposomes. The nanopore was prefilled with a polyelectrolyte multilayer (PEM) that triggered the spontaneous fusion of the lipid vesicles. Pore-forming peptide melittin was incorporated in the bilayer, and single channel activities were monitored for a period of 2.5 weeks. The long lifetime of the system enabled the observation of the time-dependent stabilization effect of the melittin open state upon bias application.
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Affiliation(s)
- Kaori Sugihara
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Gloriastrasse 35, CH-8092 Zurich, Switzerland
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29
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Nanostructured materials in potentiometry. Anal Bioanal Chem 2010; 399:171-81. [DOI: 10.1007/s00216-010-3974-3] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2010] [Revised: 06/23/2010] [Accepted: 06/28/2010] [Indexed: 10/19/2022]
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30
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Studer A, Demarche S, Langenegger D, Tiefenauer L. Integration and recording of a reconstituted voltage-gated sodium channel in planar lipid bilayers. Biosens Bioelectron 2010; 26:1924-8. [PMID: 20609576 DOI: 10.1016/j.bios.2010.06.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Revised: 06/07/2010] [Accepted: 06/07/2010] [Indexed: 11/29/2022]
Abstract
Functional assays for membrane proteins become increasingly important in biosciences. We demonstrate the integration of reconstituted bacterial voltage-gated sodium channels (NaChBac) into preformed free-standing lipid bilayers by using the nystatin-ergosterol method to promote proteoliposome fusion. Vesicle delivery and subsequent NaChBac activity were monitored, the orientation of the transferred ion channels was assessed measuring at both, positive and negative holding potentials and the channel specificity was demonstrated by adding the blocker nimodipine. A conductance of 120 pS per channel and an opening time in the range of seconds have been observed. Interestingly, we found that fusion of proteoliposomes into preformed free-standing bilayers is limited, if hydrophobically silanized silicon nitride membranes are used as the supporting material. In this case the diameter of the liposome had to be at least 20 times smaller compared to that of the pore to render fusion possible.
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Affiliation(s)
- A Studer
- Paul Scherrer Institut, Department of Biology and Chemistry, Biomolecular Research Laboratory, CH-5232 Villigen PSI, Switzerland.
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31
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Im H, Wittenberg NJ, Lesuffleur A, Lindquist NC, Oh SH. Membrane protein biosensing with plasmonic nanopore arrays and pore-spanning lipid membranes. Chem Sci 2010; 1:688-696. [PMID: 21218136 PMCID: PMC3015192 DOI: 10.1039/c0sc00365d] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Integration of solid-state biosensors and lipid bilayer membranes is important for membrane protein research and drug discovery. In these sensors, it is critical that the solid-state sensing material does not have adverse effects on the conformation or functionality of membrane-bound molecules. In this work, pore-spanning lipid membranes are formed over an array of periodic nanopores in free-standing gold films for surface plasmon resonance (SPR) kinetic binding assays. The ability to perform kinetic assays with a transmembrane protein is demonstrated with α-hemolysin (α-HL). The incorporation of α-HL into the membrane followed by specific antibody binding (anti-α-HL) red-shifts the plasmon resonance of the gold nanopore array, which is optically monitored in real time. Subsequent fluorescence imaging reveals that the antibodies primarily bind in nanopore regions, indicating that α-HL incorporation preferentially occurs into areas of pore-spanning lipid membranes.
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Affiliation(s)
| | | | | | | | - Sang-Hyun Oh
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota, 55455, USA. Fax: +1 612 625 4583; Tel: +1 612 625 0125;
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