挥发性麻醉剂与肌动蛋白分子相互作用的计算机模拟研究

An In Silico Investigation of the Molecular Interactions between Volatile Anesthetics and Actin.

作者信息

Truglia Barbara, Carbone Nicola, Ghadre Ibrahim, Vallero Sara, Zito Marinella, Zizzi Eric Adriano, Deriu Marco Agostino, Tuszynski J A

机构信息

DIMEAS, Politecnico di Torino, 10129 Turin, Italy.

Department of Data Science and Engineering, The Silesian University of Technology, 44-100 Gliwice, Poland.

出版信息

Pharmaceuticals (Basel). 2023 Dec 26;17(1):37. doi: 10.3390/ph17010037.

Abstract

Volatile anesthetics (VAs) are medicinal chemistry compounds commonly used to enable surgical procedures for patients who undergo painful treatments and can be partially or fully sedated, remaining in an unconscious state during the operation. The specific molecular mechanism of anesthesia is still an open issue, but scientific evidence supports the hypothesis of the involvement of both putative hydrophobic cavities in membrane receptors as binding pockets and interactions between anesthetics and cytoplasmic proteins. Previous studies demonstrated the binding of VAs to tubulin. Since actin is the other major component of the cytoskeleton, this study involves an investigation of its interactions with four major anesthetics: halothane, isoflurane, sevoflurane, and desflurane. Molecular docking was implemented using the Molecular Operating Environment (MOE) software (version 2022.02) and applied to a G-actin monomer, extrapolating the relative binding affinities and root-mean-square deviation (RMSD) values. A comparison with the F-actin was also made to assess if the generally accepted idea about the enhanced F-to-G-actin transformation during anesthesia is warranted. Overall, our results confirm the solvent-like behavior of anesthetics, as evidenced by Van der Waals interactions as well as the relevant hydrogen bonds formed in the case of isoflurane and sevoflurane. Also, a comparison of the interactions of anesthetics with tubulin was made. Finally, the short- and long-term effects of anesthetics are discussed for their possible impact on the occurrence of mental disorders.

摘要

挥发性麻醉剂(VAs)是一类药物化学化合物,常用于为接受痛苦治疗的患者实施外科手术,可使患者部分或完全镇静,在手术过程中保持无意识状态。麻醉的具体分子机制仍是一个悬而未决的问题,但科学证据支持这样的假说:膜受体中假定的疏水腔作为结合口袋参与其中,以及麻醉剂与细胞质蛋白之间存在相互作用。先前的研究表明VAs与微管蛋白结合。由于肌动蛋白是细胞骨架的另一个主要成分,本研究涉及对其与四种主要麻醉剂(氟烷、异氟烷、七氟烷和地氟烷)相互作用的研究。使用分子操作环境(MOE)软件(2022.02版)进行分子对接,并应用于G-肌动蛋白单体,推断相对结合亲和力和均方根偏差(RMSD)值。还与F-肌动蛋白进行了比较,以评估关于麻醉期间F-肌动蛋白向G-肌动蛋白转化增强这一普遍接受的观点是否合理。总体而言,我们的结果证实了麻醉剂的溶剂样行为,范德华相互作用以及异氟烷和七氟烷情况下形成的相关氢键证明了这一点。此外,还对麻醉剂与微管蛋白的相互作用进行了比较。最后,讨论了麻醉剂的短期和长期影响对精神障碍发生的可能影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ed77/10819646/87d68063f567/pharmaceuticals-17-00037-g001.jpg

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