ArticleACS applied bio materials2025
Influence of Cholesterol on the Insertion and Interaction of SARS-CoV-2 Proteins with Lipid Membranes.
Article in ACS applied bio materials, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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Who cites it
2 citing papers in PubMed.
- The Selective DHCR24 Blocker SH42 Inhibits ACE2 Binding and Cellular Entry of SARS-CoV-2 Spike Proteins More Efficiently Than Atorvastatin.Research (Washington, D.C.) · 2026Article
- Persistent Green Luminescence in Nanoparticles Functionalized with SARS-CoV-2 Spike Proteins: Virus-Like Particles Showing Active Targeting toward Selected Cells.ACS applied bio materials · 2025Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cholesterol is an essential sterol in cell membranes that regulates organization and fluidity. This biomolecule has been identified as one of the critical factors in the internalization process of various viruses in human cells. Therefore, understanding these mechanisms is crucial for a deeper comprehension of viral pathogenicity in the search for practical therapeutic approaches against viral diseases. The biochemical and biophysical processes related to these diseases are highly complex. For this reason, studying model systems capable of mimicking the interaction of lipid membranes with cholesterol and proteins is fundamental. In this work, we propose to study the structural and elastic changes in mono-, bi-, and tridimensional lipid systems composed of dipalmitoylphosphatidylcholine (PC) with varying amounts of cholesterol in the presence and absence of the S protein (Spike) and its receptor-binding domain (RBD) from SARS-CoV-2. To characterize these systems, we used both experimental and theoretical approaches such as Langmuir trough, atomic force microscopy (AFM), small-angle X-ray scattering (SAXS), electrochemical methods, and molecular dynamics (MD) simulations. With the interpretation of all results obtained in this work, it was possible to propose a structural model of the membrane in the presence of cholesterol and the interaction with the Spike protein and RBD. The behavior of the adsorption isotherm and SAXS data, together with the results provided by MD simulations, led us to conclude that cholesterol in PC monolayers promotes local alterations, inducing the formation of more rigid membrane regions. More importantly, cholesterol plays a crucial role in facilitating the allocation of SARS-CoV-2 proteins in lipid systems. This is especially true for the Spike protein, which displayed a non-ACE2 mediated stable binding to the lipid membrane with high internalization.
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Registered trials
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