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Stampolaki Μ, Hoffmann A, Tekwani K, Georgiou K, Tzitzoglaki C, Ma C, Becker S, Schmerer P, Döring K, Stylianakis I, Turcu AL, Wang J, Vázquez S, Andreas LB, Schmidtke M, Kolocouris A. A Study of the Activity of Adamantyl Amines against Mutant Influenza A M2 Channels Identified a Polycyclic Cage Amine Triple Blocker, Explored by Molecular Dynamics Simulations and Solid-State NMR. ChemMedChem 2023; 18:e202300182. [PMID: 37377066 DOI: 10.1002/cmdc.202300182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/25/2023] [Accepted: 06/26/2023] [Indexed: 06/29/2023]
Abstract
We compared the anti-influenza potencies of 57 adamantyl amines and analogs against influenza A virus with serine-31 M2 proton channel, usually termed as WT M2 channel, which is amantadine sensitive. We also tested a subset of these compounds against viruses with the amantadine-resistant L26F, V27A, A30T, G34E M2 mutant channels. Four compounds inhibited WT M2 virus in vitro with mid-nanomolar potency, with 27 compounds showing sub-micromolar to low micromolar potency. Several compounds inhibited L26F M2 virus in vitro with sub-micromolar to low micromolar potency, but only three compounds blocked L26F M2-mediated proton current as determined by electrophysiology (EP). One compound was found to be a triple blocker of WT, L26F, V27A M2 channels by EP assays, but did not inhibit V27A M2 virus in vitro, and one compound inhibited WT, L26F, V27A M2 in vitro without blocking V27A M2 channel. One compound blocked only L26F M2 channel by EP, but did not inhibit virus replication. The triple blocker compound is as long as rimantadine, but could bind and block V27A M2 channel due to its larger girth as revealed by molecular dynamics simulations, while MAS NMR informed on the interaction of the compound with M2(18-60) WT or L26F or V27A.
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Affiliation(s)
- Μarianna Stampolaki
- Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis-Zografou, 15771, Athens, Greece
- Department of NMR-Based Structural Biology, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, Göttingen, Germany
| | - Anja Hoffmann
- Department of Medical Microbiology, Jena University Hospital, CMB Building, R. 443, Hans Knoell Str. 2, 07745, Jena (Germany), Germany
| | - Kumar Tekwani
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
| | - Kyriakos Georgiou
- Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis-Zografou, 15771, Athens, Greece
| | - Christina Tzitzoglaki
- Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis-Zografou, 15771, Athens, Greece
| | - Chunlong Ma
- Department of Medicinal Chemistry, The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, NJ 08854-8020, USA
| | - Stefan Becker
- Department of NMR-Based Structural Biology, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, Göttingen, Germany
| | - Patrick Schmerer
- Department of Medical Microbiology, Jena University Hospital, CMB Building, R. 443, Hans Knoell Str. 2, 07745, Jena (Germany), Germany
| | - Kristin Döring
- Department of Medical Microbiology, Jena University Hospital, CMB Building, R. 443, Hans Knoell Str. 2, 07745, Jena (Germany), Germany
| | - Ioannis Stylianakis
- Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis-Zografou, 15771, Athens, Greece
| | - Andreea L Turcu
- Facultat de Farmàcia i Ciències de l'Alimentació, and Institute of Biomedicine (IBUB), Universitat de Barcelona, Av. Joan XXIII, 27-31, Barcelona, 08028, Spain
| | - Jun Wang
- Department of Medicinal Chemistry, The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, NJ 08854-8020, USA
| | - Santiago Vázquez
- Facultat de Farmàcia i Ciències de l'Alimentació, and Institute of Biomedicine (IBUB), Universitat de Barcelona, Av. Joan XXIII, 27-31, Barcelona, 08028, Spain
| | - Loren B Andreas
- Department of NMR-Based Structural Biology, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, Göttingen, Germany
| | - Michaela Schmidtke
- Department of Medical Microbiology, Jena University Hospital, CMB Building, R. 443, Hans Knoell Str. 2, 07745, Jena (Germany), Germany
| | - Antonios Kolocouris
- Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis-Zografou, 15771, Athens, Greece
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