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Khramtsov YV, Ulasov AV, Lupanova TN, Slastnikova TA, Rosenkranz AA, Bunin ES, Georgiev GP, Sobolev AS. Intracellular Degradation of SARS-CoV-2 N-Protein Caused by Modular Nanotransporters Containing Anti-N-Protein Monobody and a Sequence That Recruits the Keap1 E3 Ligase. Pharmaceutics 2023; 16:4. [PMID: 38276482 PMCID: PMC10818351 DOI: 10.3390/pharmaceutics16010004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/08/2023] [Accepted: 12/15/2023] [Indexed: 01/27/2024] Open
Abstract
The proper viral assembly relies on both nucleic acids and structural viral proteins. Thus a biologically active agent that provides the degradation of one of these key proteins and/or destroys the viral factory could suppress viral replication efficiently. The nucleocapsid protein (N-protein) is a key protein for the SARS-CoV-2 virus. As a bioactive agent, we offer a modular nanotransporter (MNT) developed by us, which, in addition to an antibody mimetic to the N-protein, contains an amino acid sequence for the attraction of the Keap1 E3 ubiquitin ligase. This should lead to the subsequent degradation of the N-protein. We have shown that the functional properties of modules within the MNT permit its internalization into target cells, endosome escape into the cytosol, and binding to the N-protein. Using flow cytometry and western blotting, we demonstrated significant degradation of N-protein when A549 and A431 cells transfected with a plasmid coding for N-protein were incubated with the developed MNTs. The proposed MNTs open up a new approach for the treatment of viral diseases.
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Affiliation(s)
- Yuri V. Khramtsov
- Laboratory of Molecular Genetics of Intracellular Transport, Institute of Gene Biology of Russian Academy of Sciences, 34/5 Vavilov St., 119334 Moscow, Russia; (Y.V.K.); (A.V.U.); (T.N.L.); (T.A.S.); (A.A.R.); (E.S.B.); (G.P.G.)
| | - Alexey V. Ulasov
- Laboratory of Molecular Genetics of Intracellular Transport, Institute of Gene Biology of Russian Academy of Sciences, 34/5 Vavilov St., 119334 Moscow, Russia; (Y.V.K.); (A.V.U.); (T.N.L.); (T.A.S.); (A.A.R.); (E.S.B.); (G.P.G.)
| | - Tatiana N. Lupanova
- Laboratory of Molecular Genetics of Intracellular Transport, Institute of Gene Biology of Russian Academy of Sciences, 34/5 Vavilov St., 119334 Moscow, Russia; (Y.V.K.); (A.V.U.); (T.N.L.); (T.A.S.); (A.A.R.); (E.S.B.); (G.P.G.)
| | - Tatiana A. Slastnikova
- Laboratory of Molecular Genetics of Intracellular Transport, Institute of Gene Biology of Russian Academy of Sciences, 34/5 Vavilov St., 119334 Moscow, Russia; (Y.V.K.); (A.V.U.); (T.N.L.); (T.A.S.); (A.A.R.); (E.S.B.); (G.P.G.)
| | - Andrey A. Rosenkranz
- Laboratory of Molecular Genetics of Intracellular Transport, Institute of Gene Biology of Russian Academy of Sciences, 34/5 Vavilov St., 119334 Moscow, Russia; (Y.V.K.); (A.V.U.); (T.N.L.); (T.A.S.); (A.A.R.); (E.S.B.); (G.P.G.)
- Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory St., 119234 Moscow, Russia
| | - Egor S. Bunin
- Laboratory of Molecular Genetics of Intracellular Transport, Institute of Gene Biology of Russian Academy of Sciences, 34/5 Vavilov St., 119334 Moscow, Russia; (Y.V.K.); (A.V.U.); (T.N.L.); (T.A.S.); (A.A.R.); (E.S.B.); (G.P.G.)
- Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory St., 119234 Moscow, Russia
| | - Georgii P. Georgiev
- Laboratory of Molecular Genetics of Intracellular Transport, Institute of Gene Biology of Russian Academy of Sciences, 34/5 Vavilov St., 119334 Moscow, Russia; (Y.V.K.); (A.V.U.); (T.N.L.); (T.A.S.); (A.A.R.); (E.S.B.); (G.P.G.)
| | - Alexander S. Sobolev
- Laboratory of Molecular Genetics of Intracellular Transport, Institute of Gene Biology of Russian Academy of Sciences, 34/5 Vavilov St., 119334 Moscow, Russia; (Y.V.K.); (A.V.U.); (T.N.L.); (T.A.S.); (A.A.R.); (E.S.B.); (G.P.G.)
- Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory St., 119234 Moscow, Russia
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