Molecular Packing in Langmuir Monolayers Composed of a Phosphatidylcholine and a Pyrene Lipid

The Journal of Physical Chemistry. B
Denise Gradella VillalvaG Mancini

Abstract

Pyrene lipids are useful tools to investigate membrane organization and intracellular lipid trafficking. The molecular interactions controlling the organization of lipid monolayers composed of a cationic amphiphile tagged with a pyrene residue and a saturated or unsaturated phospholipid, namely, 1,2-dimyristoyl-sn-glycero-3-phosphocholine and 1,2-dioleoyl-sn-glycero-3-phosphocholine, were investigated by Langmuir trough isotherms to understand how the molecular structure of the components and their relative amount affect the physicochemical properties of lipid monolayers. The obtained results show that the cationic headgroups and unsaturation of hydrophobic chains strongly affect the organization of the lipid monolayer as a function of the amount of components. On the other hand, the presence of the pyrene moiety does not seem to have a marked influence on the interaction within lipid assembly.

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Citations

Aug 2, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Yi Y ZuoA Wilhelm Neumann
Oct 26, 2016·Chemistry and Physics of Lipids·Manuela PetacciaGiovanna Mancini
Aug 3, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Benjamin J PetersDebbie C Crans
Oct 28, 2016·European Biophysics Journal : EBJ·Wallance Moreira PazinAmando Siuiti Ito
Dec 13, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·S MitraS K Ghosh
Dec 4, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Alberto Sánchez LuvianoGabriel Espinosa
Jul 4, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Lu Xu, Yi Y Zuo

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