Interaction of a quercetin derivative - lensoside Aβ with liposomal membranes. 2018

Bozena Pawlikowska-Pawlega, and Justyna Kapral, and Antoni Gawron, and Anna Stochmal, and Jerzy Zuchowski, and Lukasz Pecio, and Rafal Luchowski, and Wojciech Grudzinski, and Wieslaw I Gruszecki
Department of Comparative Anatomy and Anthropology, Maria Curie-Sklodowska University, Akademicka 19, 20-033 Lublin, Poland; Electron Microscopy Laboratory, Maria Curie-Sklodowska University, Akademicka 19, 20-033 Lublin, Poland. Electronic address: bozka1996@o2.pl.

Lensoside Aβ, representing the flavonol glycosides, is a compound isolated from the aerial parts of edible lentil (Lens culinaris) cultivar Tina. This substance arouses interest because so far there is very little data about secondary metabolites isolated from the leaves and stems of this plant. Additionally, bioactive potential of flavonoids is directly coupled with the membranes as a primary target of their physiological and pharmacological activity. The aim of this study was to investigate the effect of lensoside Aβ on lipid membranes. Interaction of examined compound with liposomes formed with dipalmitoylphosphatidylcholine (DPPC) was investigated with application of FTIR spectroscopy and 1H NMR technique. Molecular localization and orientation of lensoside Aβ in a single lipid bilayer system represented by giant unilamellar vesicles, was also investigated with application of confocal fluorescence lifetime imaging microscopy (FLIM). FTIR analysis revealed that the tested compound incorporates into DPPC membranes via hydrogen bonding to lipid polar head groups in the PO2 group region and the COPOC segment. Furthermore 1H NMR analysis showed ordering effect in both the hydrophobic alkyl chains region and the polar heads of phospholipids. FLIM investigation has revealed roughly parallel orientation of its molecules in the membranes. This suggests that one of the possible physiological functions of this flavonol could be screening a cell against short-wavelength radiation.

UI MeSH Term Description Entries
D008051 Lipid Bilayers Layers of lipid molecules which are two molecules thick. Bilayer systems are frequently studied as models of biological membranes. Bilayers, Lipid,Bilayer, Lipid,Lipid Bilayer
D008081 Liposomes Artificial, single or multilaminar vesicles (made from lecithins or other lipids) that are used for the delivery of a variety of biological molecules or molecular complexes to cells, for example, drug delivery and gene transfer. They are also used to study membranes and membrane proteins. Niosomes,Transferosomes,Ultradeformable Liposomes,Liposomes, Ultra-deformable,Liposome,Liposome, Ultra-deformable,Liposome, Ultradeformable,Liposomes, Ultra deformable,Liposomes, Ultradeformable,Niosome,Transferosome,Ultra-deformable Liposome,Ultra-deformable Liposomes,Ultradeformable Liposome
D008563 Membrane Lipids Lipids, predominantly phospholipids, cholesterol and small amounts of glycolipids found in membranes including cellular and intracellular membranes. These lipids may be arranged in bilayers in the membranes with integral proteins between the layers and peripheral proteins attached to the outside. Membrane lipids are required for active transport, several enzymatic activities and membrane formation. Cell Membrane Lipid,Cell Membrane Lipids,Membrane Lipid,Lipid, Cell Membrane,Lipid, Membrane,Lipids, Cell Membrane,Lipids, Membrane,Membrane Lipid, Cell,Membrane Lipids, Cell
D011794 Quercetin A flavonol widely distributed in plants. It is an antioxidant, like many other phenolic heterocyclic compounds. Glycosylated forms include RUTIN and quercetrin. 3,3',4',5,7-Pentahydroxyflavone,Dikvertin
D006860 Hydrogen Bonding A low-energy attractive force between hydrogen and another element. It plays a major role in determining the properties of water, proteins, and other compounds. Hydrogen Bonds,Bond, Hydrogen,Hydrogen Bond
D015060 1,2-Dipalmitoylphosphatidylcholine Synthetic phospholipid used in liposomes and lipid bilayers to study biological membranes. It is also a major constituent of PULMONARY SURFACTANTS. Dipalmitoyllecithin,1,2-Dihexadecyl-sn-Glycerophosphocholine,1,2-Dipalmitoyl-Glycerophosphocholine,Dipalmitoyl Phosphatidylcholine,Dipalmitoylglycerophosphocholine,Dipalmitoylphosphatidylcholine,1,2 Dihexadecyl sn Glycerophosphocholine,1,2 Dipalmitoyl Glycerophosphocholine,1,2 Dipalmitoylphosphatidylcholine,Phosphatidylcholine, Dipalmitoyl
D015394 Molecular Structure The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds. Structure, Molecular,Molecular Structures,Structures, Molecular
D017550 Spectroscopy, Fourier Transform Infrared A spectroscopic technique in which a range of wavelengths is presented simultaneously with an interferometer and the spectrum is mathematically derived from the pattern thus obtained. FTIR,Fourier Transform Infrared Spectroscopy,Spectroscopy, Infrared, Fourier Transform
D053835 Unilamellar Liposomes Single membrane vesicles, generally made of PHOSPHOLIPIDS. Monolayer Liposomes,Monolayer Vesicles,Unilamellar Vesicles,Liposomes, Monolayer,Liposomes, Unilamellar,Vesicles, Monolayer,Vesicles, Unilamellar
D066244 Proton Magnetic Resonance Spectroscopy Spectroscopy technique which measures changes in organic compounds by tracking the spectral energy of absorption of HYDROGEN atoms. 1H NMR,1H-MRS,1H-NMR

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