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Zabrodskaya Y, Tsvetkov V, Shurygina AP, Vasyliev K, Shaldzhyan A, Gorshkov A, Kuklin A, Fedorova N, Egorov V. How the immune mousetrap works: Structural evidence for the immunomodulatory action of a peptide from influenza NS1 protein. Biophys Chem 2024; 307:107176. [PMID: 38219420 DOI: 10.1016/j.bpc.2024.107176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 01/08/2024] [Indexed: 01/16/2024]
Abstract
One of the critical stages of the T-cell immune response is the dimerization of the intramembrane domains of T-cell receptors (TCR). Structural similarities between the immunosuppressive domains of viral proteins and the transmembrane domains of TCR have led several authors to hypothesize the mechanism of immune response suppression by highly pathogenic viruses: viral proteins embed themselves in the membrane and act on the intramembrane domain of the TCRalpha subunit, hindering its functional oligomerization. It has also been suggested that this mechanism is used by influenza A virus in NS1-mediated immunosuppression. We have shown that the peptide corresponding to the primary structure of the potential immunosuppressive domain of NS1 protein (G51) can reduce concanavalin A-induced proliferation of PBMC cells, as well as in vitro, G51 can affect the oligomerization of the core peptide corresponding to the intramembrane domain of TCR, using AFM and small-angle neutron scattering. The results obtained using in cellulo and in vitro model systems suggest the presence of functional interaction between the NS1 fragment and the intramembrane domain of the TCR alpha subunit. We have proposed a possible scheme for such interaction obtained by computer modeling. This suggests the existence of another NS1-mediated mechanism of immunosuppression in influenza.
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Affiliation(s)
- Yana Zabrodskaya
- Institute of Biomedical Systems and Biotechnology, Peter the Great Saint Petersburg Polytechnic University, 29 Ulitsa Polytechnicheskaya, St. Petersburg 194064, Russia; Smorodintsev Research Institute of Influenza, Russian Ministry of Health, 15/17 Ulitsa Prof. Popova, St. Petersburg 197376, Russia.
| | - Vladimir Tsvetkov
- Smorodintsev Research Institute of Influenza, Russian Ministry of Health, 15/17 Ulitsa Prof. Popova, St. Petersburg 197376, Russia; Federal Research and Clinical Center for Physical Chemical Medicine, 1a Ulitsa Malaya Pirogovskaya, Moscow 119435, Russia; Center for Mathematical Modeling in Drug Development, I.M. Sechenov First Moscow State Medical University, Moscow 119146, Russia
| | - Anna-Polina Shurygina
- Smorodintsev Research Institute of Influenza, Russian Ministry of Health, 15/17 Ulitsa Prof. Popova, St. Petersburg 197376, Russia
| | - Kirill Vasyliev
- Smorodintsev Research Institute of Influenza, Russian Ministry of Health, 15/17 Ulitsa Prof. Popova, St. Petersburg 197376, Russia
| | - Aram Shaldzhyan
- Smorodintsev Research Institute of Influenza, Russian Ministry of Health, 15/17 Ulitsa Prof. Popova, St. Petersburg 197376, Russia
| | - Andrey Gorshkov
- Smorodintsev Research Institute of Influenza, Russian Ministry of Health, 15/17 Ulitsa Prof. Popova, St. Petersburg 197376, Russia
| | - Alexander Kuklin
- International Intergovernmental Organization Joint Institute for Nuclear Research, 6 Ulitsa Joliot-Curie, Dubna 141980, Russia; Moscow Institute of Physics and Technology (State University), 9 Institutskiy pereulok, 141701 Dolgoprudny, Moscow Region, Russia
| | - Natalya Fedorova
- Petersburg Nuclear Physics Institute Named by B. P. Konstantinov of National Research Center, Kurchatov Institute, 1 mkr. Orlova Roshcha, Gatchina 188300, Russia
| | - Vladimir Egorov
- Institute of Experimental Medicine, 12 Ulitsa Akademika Pavlova, St. Petersburg 197376, Russia
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Lebedev DV, Egorov VV, Shvetsov AV, Zabrodskaya YA, Isaev-Ivanov VV, Konevega AL. Neutron Scattering Techniques and Complementary Methods for Structural and Functional Studies of Biological Macromolecules and Large Macromolecular Complexes. CRYSTALLOGR REP+ 2021. [DOI: 10.1134/s1063774521020103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract
The review describes the application of small-angle scattering (SAS) of neutrons and complementary methods to study the structures of biomacromolecules. Here we cover SAS techniques, such as the contrast variation, the neutron spin-echo, and the solution of direct and inverse problems of three-dimensional reconstruction of the structures of macromolecules from SAS spectra by means of molecular modeling. A special section is devoted to specific objects of research, such as supramolecular complexes, influenza virus nucleoprotein, and chromatin.
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Zabrodskaya YA, Shvetsov AV, Tsvetkov VB, Egorov VV. A double-edged sword: supramolecular complexes of triazavirine display multicenter binding effects which influence aggregate formation. J Biomol Struct Dyn 2018; 37:3041-3047. [PMID: 30073907 DOI: 10.1080/07391102.2018.1507837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Yana A Zabrodskaya
- a Molecular Biology of Viruses Department, Smorodintsev Research Institute of Influenza , Ministry of Healthcare of the Russian Federation , St. Petersburg , Russia.,b Molecular and Radiation Biophysics Department , Petersburg Nuclear Physics Institute named by B. P. Konstantinov of National Research Center "Kurchatov Institute" , Gatchina , Russia
| | - Alexey V Shvetsov
- b Molecular and Radiation Biophysics Department , Petersburg Nuclear Physics Institute named by B. P. Konstantinov of National Research Center "Kurchatov Institute" , Gatchina , Russia.,c Supercomputer Center , Peter the Great Saint-Petersburg State Polytechnic University , St. Petersburg , Russia
| | - Vladimir B Tsvetkov
- a Molecular Biology of Viruses Department, Smorodintsev Research Institute of Influenza , Ministry of Healthcare of the Russian Federation , St. Petersburg , Russia.,d Biophysics Department , Research and Clinical Center for Physical Chemical Medicine , Moscow , Russia.,e Polyelectrolytes and Biomedical Polymers Laboratory , A.V. Topchiev Institute of Petrochemical Synthesis , RAS Moscow , Russia
| | - Vladimir V Egorov
- a Molecular Biology of Viruses Department, Smorodintsev Research Institute of Influenza , Ministry of Healthcare of the Russian Federation , St. Petersburg , Russia.,b Molecular and Radiation Biophysics Department , Petersburg Nuclear Physics Institute named by B. P. Konstantinov of National Research Center "Kurchatov Institute" , Gatchina , Russia.,f Molecular Genetics Department , Federal State Budgetary Scientific Institution "Institute of Experimental Medicine" , St. Petersburg , Russia
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Shvetsov AV, Zabrodskaya YA, Nekrasov PA, Egorov VV. Triazavirine supramolecular complexes as modifiers of the peptide oligomeric structure. J Biomol Struct Dyn 2017; 36:2694-2698. [PMID: 28828928 DOI: 10.1080/07391102.2017.1367329] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
In this study, we present molecular dynamics simulations of the antiviral drug triazavirine, that affects formation of amyloid-like fibrils of the model peptide (SI). According to our simulations, triazavirine is able to form linear supramolecular structures which can act as shields and prevent interactions between SI monomers. This model, as validated by simulations, provides an adequate explanation of triazavirine's mechanism of action as it pertains to SI peptide fibril formation.
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Affiliation(s)
- Alexey V Shvetsov
- a Petersburg Nuclear Physics Institute named by B.P. Konstantinov of National Research Centre "Kurchatov Institute" , Orlova Roscha, 188300 Gatchina , Russia .,b Peter the Great Saint-Petersburg Polytechnic University , 29, Politekhnicheskaya, 194064 St. Petersburg , Russia
| | - Yana A Zabrodskaya
- c Research Institute of Influenza, Ministry of Healthcare of the Russian Federation , 15/17, Prof. Popova, 197376 St. Petersburg , Russia
| | - Peter A Nekrasov
- c Research Institute of Influenza, Ministry of Healthcare of the Russian Federation , 15/17, Prof. Popova, 197376 St. Petersburg , Russia
| | - Vladimir V Egorov
- a Petersburg Nuclear Physics Institute named by B.P. Konstantinov of National Research Centre "Kurchatov Institute" , Orlova Roscha, 188300 Gatchina , Russia .,c Research Institute of Influenza, Ministry of Healthcare of the Russian Federation , 15/17, Prof. Popova, 197376 St. Petersburg , Russia .,d Federal State Budgetary Scientific "Institute of Experimental Medicine" , 12, Akad. Pavlova, 197376 St. Petersburg , Russia
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