Structural and kinetic molecular dynamics study of electroporation in cholesterol-containing bilayers

We present a numerical study of pore formation in lipid bilayers containing cholesterol (Chol) and subjected to a transverse electric field. Molecular dynamics simulations of 1,2-dipalmitoyl-sn-glycero-3-phosphatidylcholine (DOPC) membranes reveal the formation of a pore when an electric field of 32...

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Autor principal: Fernández, M.L
Otros Autores: Marshall, Guillermo Ricardo, Sagués, F., Reigada, R.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: American Chemical Society 2010
Acceso en línea:Registro en Scopus
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100 1 |a Fernández, M.L. 
245 1 0 |a Structural and kinetic molecular dynamics study of electroporation in cholesterol-containing bilayers 
260 |b American Chemical Society  |c 2010 
270 1 0 |m Reigada, R.; Departament de Química Física, Universitat de Barcelona, c/Martí i Franqués 1, Pta 4, 08028 Barcelona, Spain; email: reigada@ub.edu 
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506 |2 openaire  |e Política editorial 
520 3 |a We present a numerical study of pore formation in lipid bilayers containing cholesterol (Chol) and subjected to a transverse electric field. Molecular dynamics simulations of 1,2-dipalmitoyl-sn-glycero-3-phosphatidylcholine (DOPC) membranes reveal the formation of a pore when an electric field of 325 mV/nm is applied. The minimum electric field needed for membrane permeabilization strongly increases with the addition of cholesterol above 10 mol %, reaching 750 mV/nm for 40 mol % Chol. Analysis of simulations of DOPC/Chol bilayers suggests this is caused by a substantial increment of membrane cohesion. Simulations also show that pore formation kinetics is much slower at high Chol contents. © 2010 American Chemical Society.  |l eng 
593 |a Laboratorio de Sistemas Complejos, Departamento de Computación, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina 
593 |a Departament de Química Física, Universitat de Barcelona, c/Martí i Franqués 1, Pta 4, 08028 Barcelona, Spain 
690 1 0 |a CHOLESTEROL 
690 1 0 |a ELECTRIC FIELDS 
690 1 0 |a MOLECULAR DYNAMICS 
690 1 0 |a PORE SIZE 
690 1 0 |a BI-LAYER 
690 1 0 |a ELECTROPORATION 
690 1 0 |a MEMBRANE PERMEABILIZATION 
690 1 0 |a MOLECULAR DYNAMICS SIMULATIONS 
690 1 0 |a NUMERICAL STUDIES 
690 1 0 |a PHOSPHATIDYLCHOLINE 
690 1 0 |a PORE FORMATION 
690 1 0 |a TRANSVERSE ELECTRIC FIELD 
690 1 0 |a LIPID BILAYERS 
700 1 |a Marshall, Guillermo Ricardo 
700 1 |a Sagués, F. 
700 1 |a Reigada, R. 
773 0 |d American Chemical Society, 2010  |g v. 114  |h pp. 6855-6865  |k n. 20  |p J Phys Chem B  |x 15206106  |w (AR-BaUEN)CENRE-5879  |t Journal of Physical Chemistry B 
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