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Effects of DC Magnetic Fields on Magnetoliposomes

dc.contributor.authorNuñez Magos, Leonardo
dc.contributor.authorDe Lira Escobedo, Jonathan Said
dc.contributor.authorRodríguez López, Raymundo
dc.contributor.authorMuñoz Navia, Milton de Jesús
dc.contributor.authorCastillo Rivera, José Juan Francisco
dc.contributor.authorViveros Méndez, Perla Xochil
dc.contributor.authorAraujo Palomo, Elsie Evelyn
dc.contributor.authorEncinas Oropesa, Armando
dc.contributor.authorSaucedo Anaya, Sonia Azucena
dc.contributor.authorAranda Espinoza, Said Eduardo
dc.date.accessioned2022-03-10T19:33:32Z
dc.date.available2022-03-10T19:33:32Z
dc.date.issued2021
dc.identifier.citationNuñez-Magos L, Lira-Escobedo J, Rodríguez-López R, Muñoz-Navia M, Castillo-Rivera F, Viveros-Méndez PX, Araujo E, Encinas A, Saucedo-Anaya SA and Aranda-Espinoza S (2021) Effects of DC Magnetic Fields on Magnetoliposomes. Front. Mol. Biosci. 8:703417. doi: 10.3389/fmolb.2021.703417
dc.identifier.urihttp://hdl.handle.net/11627/5751
dc.description.abstract"The potential use of magnetic nanoparticles (MNPs) in biomedicine as magnetic resonance, drug delivery, imagenology, hyperthermia, biosensors, and biological separation has been studied in different laboratories. One of the challenges on MNP elaboration for biological applications is the size, biocompatibility, heat efficiency, stabilization in physiological conditions, and surface coating. Magnetoliposome (ML), a lipid bilayer of phospholipids encapsulating MNPs, is a system used to reduce toxicity. Encapsulated MNPs can be used as a potential drug and a gene delivery system, and in the presence of magnetic fields, MLs can be accumulated in a target tissue by a strong gradient magnetic field. Here, we present a study of the effects of DC magnetic fields on encapsulated MNPs inside liposomes. Despite their widespread applications in biotechnology and environmental, biomedical, and materials science, the effects of magnetic fields on MLs are unclear. We use a modified coprecipitation method to synthesize superparamagnetic nanoparticles (SNPs) in aqueous solutions. The SNPs are encapsulated inside phospholipid liposomes to study the interaction between phospholipids and SNPs. Material characterization of SNPs reveals round-shaped nanoparticles with an average size of 12 nm, mainly magnetite. MLs were prepared by the rehydration method. After formation, we found two types of MLs: one type is tense with SNPs encapsulated and the other is a floppy vesicle that does not show the presence of SNPs. To study the response of MLs to an applied DC magnetic field, we used a homemade chamber. Digitalized images show encapsulated SNPs assembled in chain formation when a DC magnetic field is applied. When the magnetic field is switched off, it completely disperses SNPs. Floppy MLs deform along the direction of the external applied magnetic field. Solving the relevant magnetostatic equations, we present a theoretical model to explain the ML deformations by analyzing the forces exerted by the magnetic field over the surface of the spheroidal liposome. Tangential magnetic forces acting on the ML surface result in a press force deforming MLs. The type of deformations will depend on the magnetic properties of the mediums inside and outside the MLs. The model predicts a coexistence region of oblate-prolate deformation in the zone where chi = 1. We can understand the chain formation in terms of a dipole-dipole interaction of SNP."
dc.publisherFrontiers Media S.A.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectMagnetoliposomes
dc.subjectLiposome deformation
dc.subjectMagnetic nanoparticles
dc.subjectLipid membranes
dc.subjectMagnetic field,
dc.subjectBiological effects
dc.subject.classificationBIOQUÍMICA
dc.titleEffects of DC Magnetic Fields on Magnetoliposomes
dc.typearticle
dc.identifier.doihttps://doi.org/10.3389/fmolb.2021.703417
dc.rights.accessAcceso Abierto


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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional