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Virus Entry Inhibitors

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Informatics".

Deadline for manuscript submissions: closed (20 November 2024) | Viewed by 5734

Special Issue Editor


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Guest Editor
Laboratory of Molecular Modeling and Drug Design, Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY 10065, USA
Interests: rational design of antiviral drugs, e.g., virus entry/fusion inhibitors, protease inhibitors, etc.; computer-assisted drug design; structure-based drug design; ligand-based drug design; virtual screening; QSAR; 3D-QSAR; pharmacophore mapping
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Special Issue Information

Dear Colleagues,

We are pleased to inform you of the launch of a Special Issue on “Virus Entry Inhibitors” in IJMS. Virus entry into host cells is the first step of all enveloped and non-enveloped viruses. Virus entry inhibitors are a class of antiviral drugs that prevent the entry or fusion of a virus into a host cell. These inhibitors target specific mechanisms or proteins involved in the virus entry process, thereby blocking the virus from infecting the host cell.

Considerable progress has been made in this area of research, especially since the FDA approved the first HIV-1 fusion inhibitor, enfuvirtide (brand name Fuzeon), and CCR5 antagonist maraviroc (brand name Selzentry).

With this Special Issue, we will aim to provide an overview of the latest progress in the development of entry inhibitors that include small molecules, peptidomimetics, and that are peptide-based or antibody-based (such as broadly neutralizing antibody (bNAb), etc. We also want to encourage the submission of novel findings on virus entry mechanisms, preclinical and clinical assessments of virus entry inhibitors, and the future trends in developing these inhibitors.

We encourage the submission of original research articles, brief communications, reviews, and commentaries. We look forward to receiving your contributions.

Dr. Asim Debnath
Guest Editor

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Keywords

  • viral entry
  • entry inhibitors
  • small molecules
  • peptidomimetics
  • peptide-based
  • broadly neutralizing antibody (bNAb)

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Published Papers (4 papers)

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Research

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14 pages, 7532 KiB  
Article
Lipid Selectivity of Membrane Action of the Fragments of Fusion Peptides of Marburg and Ebola Viruses
by Egor V. Shekunov, Svetlana S. Efimova, Lyudmila V. Kever, Tagir F. Ishmanov and Olga S. Ostroumova
Int. J. Mol. Sci. 2024, 25(18), 9901; https://doi.org/10.3390/ijms25189901 - 13 Sep 2024
Viewed by 761
Abstract
The life cycle of Ebola and Marburg viruses includes a step of the virion envelope fusion with the cell membrane. Here, we analyzed whether the fusion of liposome membranes under the action of fragments of fusion peptides of Ebola and Marburg viruses depends [...] Read more.
The life cycle of Ebola and Marburg viruses includes a step of the virion envelope fusion with the cell membrane. Here, we analyzed whether the fusion of liposome membranes under the action of fragments of fusion peptides of Ebola and Marburg viruses depends on the composition of lipid vesicles. A fluorescence assay and electron microscopy were used to quantify the fusogenic activity of the virus fusion peptides and to identify the lipid determinants affecting membrane merging. Differential scanning calorimetry of lipid phase transitions revealed alterations in the physical properties of the lipid matrix produced by virus fusion peptides. Additionally, we found that plant polyphenols, quercetin, and myricetin inhibited vesicle fusion induced by the Marburg virus fusion peptide. Full article
(This article belongs to the Special Issue Virus Entry Inhibitors)
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14 pages, 2923 KiB  
Article
Discovery of Novel Spike Inhibitors against SARS-CoV-2 Infection
by Li-Te Tai, Cheng-Yun Yeh, Yu-Jen Chang, Ju-Fang Liu, Kai-Cheng Hsu, Ju-Chien Cheng and Chih-Hao Lu
Int. J. Mol. Sci. 2024, 25(11), 6105; https://doi.org/10.3390/ijms25116105 - 1 Jun 2024
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Abstract
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) is responsible for the current coronavirus disease pandemic. With the rapid evolution of variant strains, finding effective spike protein inhibitors is a logical and critical priority. Angiotensin-converting enzyme 2 (ACE2) has been identified as the functional receptor [...] Read more.
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) is responsible for the current coronavirus disease pandemic. With the rapid evolution of variant strains, finding effective spike protein inhibitors is a logical and critical priority. Angiotensin-converting enzyme 2 (ACE2) has been identified as the functional receptor for SARS-CoV-2 viral entry, and thus related therapeutic approaches associated with the spike protein–ACE2 interaction show a high degree of feasibility for inhibiting viral infection. Our computer-aided drug design (CADD) method meticulously analyzed more than 260,000 compound records from the United States National Cancer Institute (NCI) database, to identify potential spike inhibitors. The spike protein receptor-binding domain (RBD) was chosen as the target protein for our virtual screening process. In cell-based validation, SARS-CoV-2 pseudovirus carrying a reporter gene was utilized to screen for effective compounds. Ultimately, compounds C2, C8, and C10 demonstrated significant antiviral activity against SARS-CoV-2, with estimated EC50 values of 8.8 μM, 6.7 μM, and 7.6 μM, respectively. Using the above compounds as templates, ten derivatives were generated and robust bioassay results revealed that C8.2 (EC50 = 5.9 μM) exhibited the strongest antiviral efficacy. Compounds C8.2 also displayed inhibitory activity against the Omicron variant, with an EC50 of 9.3 μM. Thus, the CADD method successfully discovered lead compounds binding to the spike protein RBD that are capable of inhibiting viral infection. Full article
(This article belongs to the Special Issue Virus Entry Inhibitors)
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15 pages, 5186 KiB  
Article
Ligand-Based Design of Selective Peptidomimetic uPA and TMPRSS2 Inhibitors with Arg Bioisosteres
by Patrick Müller, Collin Zimmer, Ariane Frey, Gideon Holzmann, Annabelle Carolin Weldert and Tanja Schirmeister
Int. J. Mol. Sci. 2024, 25(3), 1375; https://doi.org/10.3390/ijms25031375 - 23 Jan 2024
Cited by 1 | Viewed by 1496
Abstract
Trypsin-like serine proteases are involved in many important physiological processes like blood coagulation and remodeling of the extracellular matrix. On the other hand, they are also associated with pathological conditions. The urokinase-pwlasminogen activator (uPA), which is involved in tissue remodeling, can increase the [...] Read more.
Trypsin-like serine proteases are involved in many important physiological processes like blood coagulation and remodeling of the extracellular matrix. On the other hand, they are also associated with pathological conditions. The urokinase-pwlasminogen activator (uPA), which is involved in tissue remodeling, can increase the metastatic behavior of various cancer types when overexpressed and dysregulated. Another member of this protease class that received attention during the SARS-CoV 2 pandemic is TMPRSS2. It is a transmembrane serine protease, which enables cell entry of the coronavirus by processing its spike protein. A variety of different inhibitors have been published against both proteases. However, the selectivity over other trypsin-like serine proteases remains a major challenge. In the current study, we replaced the arginine moiety at the P1 site of peptidomimetic inhibitors with different bioisosteres. Enzyme inhibition studies revealed that the phenylguanidine moiety in the P1 site led to strong affinity for TMPRSS2, whereas the cyclohexylguanidine derivate potently inhibited uPA. Both inhibitors exhibited high selectivity over other structurally similar and physiologically important proteases. Full article
(This article belongs to the Special Issue Virus Entry Inhibitors)
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Review

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15 pages, 5494 KiB  
Review
Envelope Protein-Targeting Zika Virus Entry Inhibitors
by Abhijeet Roy, Qian Liu, Yang Yang, Asim K. Debnath and Lanying Du
Int. J. Mol. Sci. 2024, 25(17), 9424; https://doi.org/10.3390/ijms25179424 - 30 Aug 2024
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Abstract
Zika virus (ZIKV; family, Flaviviridae), which causes congenital Zika syndrome, Guillain-Barré Syndrome, and other severe diseases, is transmitted mainly by mosquitoes; however, the virus can be transmitted through other routes. Among the three structural and seven nonstructural proteins, the surface envelope (E) [...] Read more.
Zika virus (ZIKV; family, Flaviviridae), which causes congenital Zika syndrome, Guillain-Barré Syndrome, and other severe diseases, is transmitted mainly by mosquitoes; however, the virus can be transmitted through other routes. Among the three structural and seven nonstructural proteins, the surface envelope (E) protein of ZIKV plays a critical role in viral entry and pathogenesis, making it a key target for the development of effective entry inhibitors. This review article describes the life cycle, genome, and encoded proteins of ZIKV, illustrates the structure and function of the ZIKV E protein, summarizes E protein-targeting entry inhibitors (with a focus on those based on natural products and small molecules), and highlights challenges that may potentially hinder the development of effective inhibitors of ZIKV infection. Overall, the article will provide useful guidance for further development of safe and potent ZIKV entry inhibitors targeting the viral E protein. Full article
(This article belongs to the Special Issue Virus Entry Inhibitors)
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