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Vesicle fusion induced by zwitterionic amphiphilic channels

Chinese Chemical Letters 2024年第1期35卷 264-266页

作者： Qingyu Huan Tao Lin Yong-Hong Fu Jun-Li Hou Department of Chemistry Fudan UniversityShanghai 200433China

A new strategy to induce vesicle fusion has been developed by employing pillar[5]arene derivatives that were channel-like and were prepared by appending side chains onto pillar[5]arenes *** channels feature with hydrophilic negatively and positively charged groups at both ends and hydrophobic Trp residues at the outer surface,which endows the channels with *** zwitterionic amphiphilic channels could spontaneously incorporate into the bilayer membranes of lipid vesicles to induce vesicle fusion driven by the electrostatic interactions between negatively charged and positively charged groups.

关键词： Vesicle fusion Pillararene Electrostatic interaction lipid bilayers

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Geometrical Constraint Equations and Geometrically Permissible Condition for Vesicles

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Chinese Physics Letters 2004年第10期21卷 2057-2058页

作者：殷雅俊尹杰 SchoolofAerospace DepartmentofEngineeringMechanicsTsinghuaUniversityBeijing100084

The application of a geometrical constraint equation for lipid bilayer vesicles is investigated. First, both the physical meaning and the mathematical formulation for the spontaneous curvature of vesicles are clarified. Second, the geometrically permissible conditions and phase diagrams for vesicles, from which the criteria for the formation, existence and disintegration of vesicles may be determined, are revealed.

关键词： lipid bilayers

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Flavonoid-membrane interactions: possible consequences for biological effects of some polyphenolic compounds

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Acta Pharmacologica Sinica 2006年第1期27卷 27-40页

作者： Andrzej B HENDRICH 50-368 Wroclaw Department of Biophysics Wroclaw Medical University Poland al.Chalubinskiego 10

Flavonoids are found ubiquitously in higher plants and constitute an importantcomponent of the majority of peoples’ daily *** biological activities offlavonoids cover a very broad spectrum,from anticancer and antibacterial activi-ties through to inhibition of bone *** the present paper,the interac-tions between flavonoids and lipid bilayers as well as biological membranes andtheir components are reviewed,with special emphasis on the structure-activityrelationships and mechanisms underlying the biological activity of flavonoids.

关键词： flavonoids lipid bilayers antioxidation anticancer activity multidrug resistance

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Tail-structure regulated phase behaviors of a lipid bilayer

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Chinese Physics B 2020年第12期29卷 547-555页

作者：李文文林召元冰杨恺 Center for Soft Condensed Matter Physics and Interdisciplinary Research&School of Physical Science and Technology Soochow UniversitySuzhou 215006China School of Optoelectronic Science and Engineering Soochow UniversitySuzhou 215006China

Lateral heterogeneity of a cell membrane,including the formation of lipid raft-like clusters and the inter-leaflet coupling of specific phase domains,is crucial for cellular functions such as membrane trafficking and transmembrane ***,the wide diversity in lipid species and the consequent complexity in lipid-lipid interplays hinder our understanding of the underlying *** this work,with coarse-grained molecular dynamics simulations,the effect of lipid tail structures on the phase behavior of a model ternary lipid membrane was systematically explored.A serial of 27 lipid membrane systems consisting of saturated,unsaturated lipids,and cholesterol(Chol)molecules,at a fixed molar ratio of 4:4:2 while varying in lipid structures including tail length,unsaturation degree,and/or position of unsaturated atoms,were *** structural factors were found to exert sophisticated influences on packing states of the constituent molecules,especially Chol,in a bilayer,and modulate the complicated entropy-enthalpy competition of the membrane system ***,an appropriate difference in effective tail length and distinct feature of the tail ends between the saturated and unsaturated lipid compositions promised an enhanced phase separation of the membrane into the Chol-rich Lo and Chol-poor Ld phase domains,with a full inter-leaflet coupling of each *** results provide insights into the lipid organizations and segregations of the cellular plasma membrane.

关键词： molecular dynamic simulation lipid bilayers phase separation inter-leaflet coupling

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