Size-controlled nanopores in lipid membranes with stabilizing electric fields

Autores
Fernández, María Laura; Risk, Marcelo; Reigada, Ramon; Vernier, P. Thomas
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Molecular dynamics (MD) has been shown to be a useful tool for unveiling many aspects of pore formation in lipid membranes under the influence of an applied electric field. However, the study of the structure and transport properties of electropores by means of MD has been hampered by difficulties in the maintenance of a stable electropore in the typically small simulated membrane patches. We describe a new simulation scheme in which an initially larger porating field is systematically reduced after pore formation to lower stabilizing values to produce stable, size-controlled electropores, which can then be characterized at the molecular level. A new method allows the three-dimensional modeling of the irregular shape of the pores obtained as well as the quantification of its volume. The size of the pore is a function of the value of the stabilizing field. At lower fields the pore disappears and the membrane recovers its normal shape, although in some cases long-lived, fragmented pores containing unusual lipid orientations in the bilayer are observed.
Fil: Fernández, María Laura. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Computación; Argentina. Instituto Tecnológico de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Risk, Marcelo. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Computación; Argentina. Instituto Tecnológico de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Reigada, Ramon. Universidad de Barcelona; España
Fil: Vernier, P. Thomas. University of Southern California; Estados Unidos
Materia
Electric Field
Electroporation
Lipid Membrane
Molecular Dynamics
Stable Size-Controlled Pores
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/68391
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/68391
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Size-controlled nanopores in lipid membranes with stabilizing electric fieldsFernández, María LauraRisk, MarceloReigada, RamonVernier, P. ThomasElectric FieldElectroporationLipid MembraneMolecular DynamicsStable Size-Controlled Poreshttps://purl.org/becyt/ford/3.1https://purl.org/becyt/ford/3Molecular dynamics (MD) has been shown to be a useful tool for unveiling many aspects of pore formation in lipid membranes under the influence of an applied electric field. However, the study of the structure and transport properties of electropores by means of MD has been hampered by difficulties in the maintenance of a stable electropore in the typically small simulated membrane patches. We describe a new simulation scheme in which an initially larger porating field is systematically reduced after pore formation to lower stabilizing values to produce stable, size-controlled electropores, which can then be characterized at the molecular level. A new method allows the three-dimensional modeling of the irregular shape of the pores obtained as well as the quantification of its volume. The size of the pore is a function of the value of the stabilizing field. At lower fields the pore disappears and the membrane recovers its normal shape, although in some cases long-lived, fragmented pores containing unusual lipid orientations in the bilayer are observed.Fil: Fernández, María Laura. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Computación; Argentina. Instituto Tecnológico de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Risk, Marcelo. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Computación; Argentina. Instituto Tecnológico de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Reigada, Ramon. Universidad de Barcelona; EspañaFil: Vernier, P. Thomas. University of Southern California; Estados UnidosAcademic Press Inc Elsevier Science2012-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/68391Fernández, María Laura; Risk, Marcelo; Reigada, Ramon; Vernier, P. Thomas; Size-controlled nanopores in lipid membranes with stabilizing electric fields; Academic Press Inc Elsevier Science; Biochemical and Biophysical Research Communications; 423; 2; 6-2012; 325-3300006-291XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.bbrc.2012.05.122info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0006291X12010212info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:06:07Zoai:ri.conicet.gov.ar:11336/68391instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:06:08.072CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Size-controlled nanopores in lipid membranes with stabilizing electric fields
title Size-controlled nanopores in lipid membranes with stabilizing electric fields
spellingShingle Size-controlled nanopores in lipid membranes with stabilizing electric fields
Fernández, María Laura
Electric Field
Electroporation
Lipid Membrane
Molecular Dynamics
Stable Size-Controlled Pores
title_short Size-controlled nanopores in lipid membranes with stabilizing electric fields
title_full Size-controlled nanopores in lipid membranes with stabilizing electric fields
title_fullStr Size-controlled nanopores in lipid membranes with stabilizing electric fields
title_full_unstemmed Size-controlled nanopores in lipid membranes with stabilizing electric fields
title_sort Size-controlled nanopores in lipid membranes with stabilizing electric fields
dc.creator.none.fl_str_mv Fernández, María Laura
Risk, Marcelo
Reigada, Ramon
Vernier, P. Thomas
author Fernández, María Laura
author_facet Fernández, María Laura
Risk, Marcelo
Reigada, Ramon
Vernier, P. Thomas
author_role author
author2 Risk, Marcelo
Reigada, Ramon
Vernier, P. Thomas
author2_role author
author
author
dc.subject.none.fl_str_mv Electric Field
Electroporation
Lipid Membrane
Molecular Dynamics
Stable Size-Controlled Pores
topic Electric Field
Electroporation
Lipid Membrane
Molecular Dynamics
Stable Size-Controlled Pores
purl_subject.fl_str_mv https://purl.org/becyt/ford/3.1
https://purl.org/becyt/ford/3
dc.description.none.fl_txt_mv Molecular dynamics (MD) has been shown to be a useful tool for unveiling many aspects of pore formation in lipid membranes under the influence of an applied electric field. However, the study of the structure and transport properties of electropores by means of MD has been hampered by difficulties in the maintenance of a stable electropore in the typically small simulated membrane patches. We describe a new simulation scheme in which an initially larger porating field is systematically reduced after pore formation to lower stabilizing values to produce stable, size-controlled electropores, which can then be characterized at the molecular level. A new method allows the three-dimensional modeling of the irregular shape of the pores obtained as well as the quantification of its volume. The size of the pore is a function of the value of the stabilizing field. At lower fields the pore disappears and the membrane recovers its normal shape, although in some cases long-lived, fragmented pores containing unusual lipid orientations in the bilayer are observed.
Fil: Fernández, María Laura. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Computación; Argentina. Instituto Tecnológico de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Risk, Marcelo. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Computación; Argentina. Instituto Tecnológico de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Reigada, Ramon. Universidad de Barcelona; España
Fil: Vernier, P. Thomas. University of Southern California; Estados Unidos
description Molecular dynamics (MD) has been shown to be a useful tool for unveiling many aspects of pore formation in lipid membranes under the influence of an applied electric field. However, the study of the structure and transport properties of electropores by means of MD has been hampered by difficulties in the maintenance of a stable electropore in the typically small simulated membrane patches. We describe a new simulation scheme in which an initially larger porating field is systematically reduced after pore formation to lower stabilizing values to produce stable, size-controlled electropores, which can then be characterized at the molecular level. A new method allows the three-dimensional modeling of the irregular shape of the pores obtained as well as the quantification of its volume. The size of the pore is a function of the value of the stabilizing field. At lower fields the pore disappears and the membrane recovers its normal shape, although in some cases long-lived, fragmented pores containing unusual lipid orientations in the bilayer are observed.
publishDate 2012
dc.date.none.fl_str_mv 2012-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/68391
Fernández, María Laura; Risk, Marcelo; Reigada, Ramon; Vernier, P. Thomas; Size-controlled nanopores in lipid membranes with stabilizing electric fields; Academic Press Inc Elsevier Science; Biochemical and Biophysical Research Communications; 423; 2; 6-2012; 325-330
0006-291X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/68391
identifier_str_mv Fernández, María Laura; Risk, Marcelo; Reigada, Ramon; Vernier, P. Thomas; Size-controlled nanopores in lipid membranes with stabilizing electric fields; Academic Press Inc Elsevier Science; Biochemical and Biophysical Research Communications; 423; 2; 6-2012; 325-330
0006-291X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.bbrc.2012.05.122
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0006291X12010212
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Academic Press Inc Elsevier Science
publisher.none.fl_str_mv Academic Press Inc Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.891075

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