期刊
MEMBRANES
卷 11, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/membranes11050319
关键词
model membranes; electrophysiology; membrane-particle interactions; lipid bilayer electrostatics; conductive channels; soft capacitor; impedance analysis
类别
资金
- National Science Foundation [1903965]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1903965] Funding Source: National Science Foundation
Characterizing membrane properties and interactions is crucial for advancing topics such as limiting nanoparticle cytotoxicity. By recreating model membranes and combining them with electrophysiology techniques, alternative approaches to measuring membrane characteristics and interactions can be achieved.
The cell membrane is a protective barrier whose configuration determines the exchange both between intracellular and extracellular regions and within the cell itself. Consequently, characterizing membrane properties and interactions is essential for advancements in topics such as limiting nanoparticle cytotoxicity. Characterization is often accomplished by recreating model membranes that approximate the structure of cellular membranes in a controlled environment, formed using self-assembly principles. The selected method for membrane creation influences the properties of the membrane assembly, including their response to electric fields used for characterizing transmembrane exchanges. When these self-assembled model membranes are combined with electrophysiology, it is possible to exploit their non-physiological mechanics to enable additional measurements of membrane interactions and phenomena. This review describes several common model membranes including liposomes, pore-spanning membranes, solid supported membranes, and emulsion-based membranes, emphasizing their varying structure due to the selected mode of production. Next, electrophysiology techniques that exploit these structures are discussed, including conductance measurements, electrowetting and electrocompression analysis, and electroimpedance spectroscopy. The focus of this review is linking each membrane assembly technique to the properties of the resulting membrane, discussing how these properties enable alternative electrophysiological approaches to measuring membrane characteristics and interactions.
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