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应用 GHz 电场防止细胞膜上淀粉样β肽积累:分子动力学模拟。

Preventing the amyloid-beta peptides accumulation on the cell membrane by applying GHz electric fields: A molecular dynamic simulation.

机构信息

Department of Chemistry, University of Isfahan, Isfahan, 81746-73441, Iran.

Department of Physics, University of Isfahan, Isfahan, 81746-73441, Iran.

出版信息

J Mol Graph Model. 2023 Sep;123:108516. doi: 10.1016/j.jmgm.2023.108516. Epub 2023 May 18.

Abstract

Alzheimer's disease is associated with accumulating different amyloid peptides on the nerve cell membranes. The non-thermal effects of the GHz electric fields in this topic have yet to be well recognized. Hence, in this study, the impacts of 1 and 5 GHz electric fields on the amyloid peptide proteins accumulation on the cell membrane have been investigated, utilizing molecular dynamics (MD) simulation. The obtained results indicated that this range of electric fields did not significantly affect the peptide structure. Moreover, it was found that the peptide penetration into the membrane was increased as the field frequency was increased when the system was exposed to a 20 mv/nm oscillating electric field. In addition, it was observed that the protein-membrane interaction is reduced significantly in the presence of the 70 mv/nm electric field. The molecular level results reported in this study could be helpful in better understanding Alzheimer's disease.

摘要

阿尔茨海默病与神经细胞膜上不同淀粉样肽的积累有关。这一主题中,GHz 电场的非热效应尚未得到充分认识。因此,在这项研究中,利用分子动力学(MD)模拟研究了 1GHz 和 5GHz 电场对细胞膜上淀粉样肽蛋白积累的影响。结果表明,该范围的电场不会显著影响肽结构。此外,当系统暴露于 20mv/nm 振荡电场时,发现随着场频率的增加,肽穿透膜的能力增加。此外,还观察到在 70mv/nm 电场存在下,蛋白质-膜相互作用显著降低。本研究报告的分子水平结果有助于更好地理解阿尔茨海默病。

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