Interaction of procyanidin B3 with membrane lipids - Fluorescence, DSC and FTIR studies.

Procyanidins, contained in many products abundant in human diet, exhibit high biological activity. However, this activity has not been fully explained at cellular and molecular levels. In this study, we determine the mechanism of interaction of procyanidin B3 with model lipid membrane. This mechanism was established on the basis of changes induced by B3 in the physical properties of lipid bilayer. The changes were investigated using steady state and time-resolved fluorescence, DSC, and FTIR. We show that procyanidin B3 causes changes in the arrangement of the polar heads of lipids, order of their acyl chains and the main lipid phase transition temperature. Furthermore, its presence in the membrane leads to a reduction in membrane dipole potential. Procyanidin B3 is anchored to membrane via hydrogen bonds formed between its OH groups and the PO2- and CO groups of lipids, causing changes in both hydrophilic and hydrophobic regions of the membrane. Copyright © 2017. Published by Elsevier B.V.

Citation

Sylwia Cyboran-Mikołajczyk, Romuald Żyłka, Piotr Jurkiewicz, Hanna Pruchnik, Jan Oszmiański, Martin Hof, Halina Kleszczyńska. Interaction of procyanidin B3 with membrane lipids - Fluorescence, DSC and FTIR studies. Biochimica et biophysica acta. 2017 Aug;1859(8):1362-1371

Mesh Tags

Substances

PMID: 28472615

search → result