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揭示抗病毒清洁剂破坏支撑脂质膜的生物物理机制:取代曲通 X-100。

Unraveling the Biophysical Mechanisms of How Antiviral Detergents Disrupt Supported Lipid Membranes: Toward Replacing Triton X-100.

机构信息

School of Chemical Engineering and Translational Nanobioscience Research Center, Sungkyunkwan University, Suwon 16419, Republic of Korea.

Department of Chemistry, Gettysburg College, Gettysburg, Pennsylvania 17325, United States.

出版信息

Langmuir. 2024 Mar 26;40(12):6524-6536. doi: 10.1021/acs.langmuir.4c00174. Epub 2024 Mar 13.

Abstract

Triton X-100 (TX-100) is a membrane-disrupting detergent that is widely used to inactivate membrane-enveloped viral pathogens, yet is being phased out due to environmental safety concerns. Intense efforts are underway to discover regulatory acceptable detergents to replace TX-100, but there is scarce mechanistic understanding about how these other detergents disrupt phospholipid membranes and hence which ones are suitable to replace TX-100 from a biophysical interaction perspective. Herein, using the quartz crystal microbalance-dissipation (QCM-D) and electrochemical impedance spectroscopy (EIS) techniques in combination with supported lipid membrane platforms, we characterized the membrane-disruptive properties of a panel of TX-100 replacement candidates with varying antiviral activities and identified two distinct classes of membrane-interacting detergents with different critical micelle concentration (CMC) dependencies and biophysical mechanisms. While all tested detergents formed micelles, only a subset of the detergents caused CMC-dependent membrane solubilization similarly to that of TX-100, whereas other detergents adsorbed irreversibly to lipid membrane interfaces in a CMC-independent manner. We compared these biophysical results to virus inactivation data, which led us to identify that certain membrane-interaction profiles contribute to greater antiviral activity and such insights can help with the discovery and validation of antiviral detergents to replace TX-100.

摘要

曲拉通 X-100(TX-100)是一种膜破坏型清洁剂,广泛用于灭活有包膜的病毒病原体,但由于对环境安全的担忧,正逐步被淘汰。目前正在积极努力寻找监管部门可接受的清洁剂来替代 TX-100,但对于这些其他清洁剂如何破坏磷脂膜,以及从生物物理相互作用的角度来看,哪些清洁剂适合替代 TX-100,人们知之甚少。在此,我们使用石英晶体微天平耗散(QCM-D)和电化学阻抗谱(EIS)技术结合脂质体支持膜平台,对具有不同抗病毒活性的一系列 TX-100 替代候选物的膜破坏特性进行了表征,并确定了两类具有不同临界胶束浓度(CMC)依赖性和不同生物物理机制的膜相互作用清洁剂。虽然所有测试的清洁剂都形成胶束,但只有一部分清洁剂会导致与 TX-100 相似的 CMC 依赖性膜溶解,而其他清洁剂则以 CMC 独立的方式不可逆地吸附到脂质膜界面。我们将这些生物物理结果与病毒失活动力学数据进行了比较,这使我们认识到某些膜相互作用特征有助于提高抗病毒活性,并且这些见解有助于发现和验证替代 TX-100 的抗病毒清洁剂。

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