{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,26]],"date-time":"2026-03-26T21:54:03Z","timestamp":1774562043181,"version":"3.50.1"},"reference-count":38,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2024,10,8]],"date-time":"2024-10-08T00:00:00Z","timestamp":1728345600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Russian Direct Investment Fund"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Vaccines"],"abstract":"<jats:p>Background: The SARS-CoV-2 virus continuously acquires mutations, leading to the emergence of new variants. Notably, the effectiveness of global vaccination efforts has significantly declined with the rise and spread of the B.1.1.529 (Omicron) variant. Methods: The study used virological, immunological and histological research methods, as well as methods of working with laboratory animals. In this study, we evaluated the Gam-COVID-Vac (Sputnik V), an adenoviral vaccine developed by the N.F. Gamaleya National Research Center for Epidemiology and Microbiology, and conducted experiments on hemizygous K18-ACE2-transgenic F1 mice. The variants studied included B.1.1.1, B.1.1.7, B.1.351, B.1.1.28\/P.1, B.1.617.2, and B.1.1.529 BA.5. Results: Our findings demonstrate that the Sputnik V vaccine elicits a robust humoral and cellular immune response, effectively protecting vaccinated animals from challenges posed by various SARS-CoV-2 variants. However, we observed a notable reduction in vaccine efficacy against the B.1.1.529 (Omicron BA.5) variant. Conclusions: Our results indicate that ongoing monitoring of emerging mutations is crucial to assess vaccine efficacy against new SARS-CoV-2 variants to identify those with pandemic potential. If protective efficacy declines, it will be imperative to develop new vaccines tailored to current variants of the virus.<\/jats:p>","DOI":"10.3390\/vaccines12101152","type":"journal-article","created":{"date-parts":[[2024,10,8]],"date-time":"2024-10-08T12:03:49Z","timestamp":1728389029000},"page":"1152","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Immunogenicity and Protectivity of Sputnik V Vaccine in hACE2-Transgenic Mice against Homologous and Heterologous SARS-CoV-2 Lineages Including Far-Distanced Omicron BA.5"],"prefix":"10.3390","volume":"12","author":[{"given":"Inna V.","family":"Dolzhikova","sequence":"first","affiliation":[{"name":"Federal State Budget Institution \u201cNational Research Centre for Epidemiology and Microbiology Named after Honorary Academician N F Gamaleya\u201d, Ministry of Health, Russian Federation, 123098 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8506-2339","authenticated-orcid":false,"given":"Amir I.","family":"Tukhvatulin","sequence":"additional","affiliation":[{"name":"Federal State Budget Institution \u201cNational Research Centre for Epidemiology and Microbiology Named after Honorary Academician N F Gamaleya\u201d, Ministry of Health, Russian Federation, 123098 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3299-4818","authenticated-orcid":false,"given":"Daria M.","family":"Grousova","sequence":"additional","affiliation":[{"name":"Federal State Budget Institution \u201cNational Research Centre for Epidemiology and Microbiology Named after Honorary Academician N F Gamaleya\u201d, Ministry of Health, Russian Federation, 123098 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ilya D.","family":"Zorkov","sequence":"additional","affiliation":[{"name":"Federal State Budget Institution \u201cNational Research Centre for Epidemiology and Microbiology Named after Honorary Academician N F Gamaleya\u201d, Ministry of Health, Russian Federation, 123098 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marina E.","family":"Komyakova","sequence":"additional","affiliation":[{"name":"Federal State Budget Institution \u201cNational Research Centre for Epidemiology and Microbiology Named after Honorary Academician N F Gamaleya\u201d, Ministry of Health, Russian Federation, 123098 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anna A.","family":"Ilyukhina","sequence":"additional","affiliation":[{"name":"Federal State Budget Institution \u201cNational Research Centre for Epidemiology and Microbiology Named after Honorary Academician N F Gamaleya\u201d, Ministry of Health, Russian Federation, 123098 Moscow, 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