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Müller, Wagner Augusto; Sarkis, Júlia Ribeiro; Marczak, Ligia Damasceno Ferreira; Muniz, André Rodrigues
Biochimica et biophysica acta. Biomembranes, October 2024, 2024-10-00, 20241001, Letnik: 1866, Številka: 7Journal Article
The combined application of electric fields and ultrasonic waves has shown promise in controlling cell membrane permeability, potentially resulting in synergistic effects that can be explored in the biotechnology industry. However, further clarification on how these processes interact is still needed. The objective of the present study was to investigate the atomic-scale effects of these processes on a DPPC lipid bilayer using molecular dynamics simulations. For higher electric fields, capable of independently forming pores, the application of an ultrasonic wave in the absence of cavitation yielded no additional effects on pore formation. However, for lower electric fields, the reduction in bilayer thickness induced by the shock wave catalyzed the electroporation process, effectively shortening the mean path that water molecules must traverse to form pores. When cavitation was considered, synergistic effects were evident only if the wave alone was able to generate pores through the formation of a water nanojet. In these cases, sonoporation acted as a mean to focus the electroporation effects on the initial pore formed by the nanojet. This study contributes to a better understanding of the synergy between electric fields and ultrasonic waves and to an optimal selection of processing parameters in practical applications of these processes. Display omitted •Computational analysis of electric fields and ultrasound sinergy in lipid membranes.•Ultrasonic waves had no effect on pore formation under high electric fields.•The waves thinned the bilayer, catalyzing electroporation in lower electric fields.•Cavitation enhances electroporation by directing its effects with a water nanojet.
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