PMID- 36655751 OWN - NLM STAT- MEDLINE DCOM- 20230228 LR - 20240202 IS - 1096-9071 (Electronic) IS - 0146-6615 (Print) IS - 0146-6615 (Linking) VI - 95 IP - 2 DP - 2023 Feb TI - A hepatitis B virus core antigen-based virus-like particle vaccine expressing SARS-CoV-2 B and T cell epitopes induces epitope-specific humoral and cell-mediated immune responses but confers limited protection against SARS-CoV-2 infection. PG - e28503 LID - 10.1002/jmv.28503 [doi] AB - The hepatitis B virus core antigen (HBcAg) tolerates insertion of foreign epitopes and maintains its ability to self-assemble into virus-like particles (VLPs). We constructed a ∆HBcAg-based VLP vaccine expressing three predicted severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) B and T cell epitopes and determined its immunogenicity and protective efficacy. The recombinant ∆HBcAg-SARS-CoV-2 protein was expressed in Escherichia coli, purified, and shown to form VLPs. K18-hACE2 transgenic C57BL/6 mice were immunized intramuscularly with ∆HBcAg VLP control (n = 15) or ∆HBcAg-SARS-CoV-2 VLP vaccine (n = 15). One week after the 2nd booster and before virus challenge, five ∆HBcAg-SARS-CoV-2 vaccinated mice were euthanized to evaluate epitope-specific immune responses. There is a statistically significant increase in epitope-specific Immunoglobulin G (IgG) response, and statistically higher interleukin 6 (IL-6) and monocyte chemoattractant protein-1 (MCP-1) expression levels in ∆HBcAg-SARS-CoV-2 VLP-vaccinated mice compared to ∆HBcAg VLP controls. While not statistically significant, the ∆HBcAg-SARS-CoV-2 VLP mice had numerically more memory CD8+ T-cells, and 3/5 mice also had numerically higher levels of interferon gamma (IFN-gamma) and tumor necrosis factor (TNF). After challenge with SARS-CoV-2, ∆HBcAg-SARS-CoV-2 immunized mice had numerically lower viral RNA loads in the lung, and slightly higher survival, but the differences are not statistically significant. These results indicate that the ∆HBcAg-SARS-CoV-2 VLP vaccine elicits epitope-specific humoral and cell-mediated immune responses but they were insufficient against SARS-CoV-2 infection. CI - (c) 2023 Wiley Periodicals LLC. FAU - Hassebroek, Anna M AU - Hassebroek AM AD - Department of Biomedical Sciences and Pathobiology, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - Sooryanarain, Harini AU - Sooryanarain H AD - Department of Biomedical Sciences and Pathobiology, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - Heffron, Connie L AU - Heffron CL AD - Department of Biomedical Sciences and Pathobiology, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - Hawks, Seth A AU - Hawks SA AD - Department of Biomedical Sciences and Pathobiology, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - LeRoith, Tanya AU - LeRoith T AUID- ORCID: 0000-0002-1196-6949 AD - Department of Biomedical Sciences and Pathobiology, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - Cecere, Thomas E AU - Cecere TE AD - Department of Biomedical Sciences and Pathobiology, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - Stone, William B AU - Stone WB AD - Department of Entomology, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - Walter, Debra AU - Walter D AD - Department of Biological System Engineering, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - Mahsoub, Hassan M AU - Mahsoub HM AD - Department of Biomedical Sciences and Pathobiology, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - Wang, Bo AU - Wang B AUID- ORCID: 0000-0002-8560-9071 AD - Department of Biomedical Sciences and Pathobiology, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - Tian, Debin AU - Tian D AD - Department of Biomedical Sciences and Pathobiology, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - Ivester, Hannah M AU - Ivester HM AD - Department of Biomedical Sciences and Pathobiology, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - Allen, Irving C AU - Allen IC AD - Department of Biomedical Sciences and Pathobiology, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - Auguste, Albert J AU - Auguste AJ AD - Department of Entomology, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - Duggal, Nisha K AU - Duggal NK AD - Department of Biomedical Sciences and Pathobiology, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - Zhang, Chenming AU - Zhang C AD - Department of Biological System Engineering, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. FAU - Meng, Xiang-Jin AU - Meng XJ AUID- ORCID: 0000-0002-2739-1334 AD - Department of Biomedical Sciences and Pathobiology, Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. LA - eng GR - R01 AI153433/AI/NIAID NIH HHS/United States GR - NH/NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - J Med Virol JT - Journal of medical virology JID - 7705876 RN - 0 (Hepatitis B Core Antigens) RN - 0 (Epitopes, T-Lymphocyte) RN - 0 (Vaccines, Virus-Like Particle) RN - 0 (Recombinant Proteins) SB - IM MH - Mice MH - Animals MH - Hepatitis B Core Antigens/genetics MH - Hepatitis B virus/genetics MH - Epitopes, T-Lymphocyte MH - SARS-CoV-2 MH - *Vaccines, Virus-Like Particle MH - *COVID-19 MH - Mice, Inbred C57BL MH - Immunity, Cellular MH - Recombinant Proteins PMC - PMC9974889 MID - NIHMS1867493 OTO - NOTNLM OT - B cell epitope OT - SARS-CoV-2 OT - T cell epitope OT - cell-mediated immune response OT - hepatitis B core antigen (HBcAg) OT - humoral immune response OT - vaccine OT - virus-like particle (VLP) COIS- Conflict of Interest The authors declare that they have no known competing financial interests or personal relationships that influenced the work reported herein. EDAT- 2023/01/20 06:00 MHDA- 2023/03/03 06:00 PMCR- 2024/02/01 CRDT- 2023/01/19 06:53 PHST- 2023/01/11 00:00 [revised] PHST- 2022/12/10 00:00 [received] PHST- 2023/01/13 00:00 [accepted] PHST- 2023/01/20 06:00 [pubmed] PHST- 2023/03/03 06:00 [medline] PHST- 2023/01/19 06:53 [entrez] PHST- 2024/02/01 00:00 [pmc-release] AID - 10.1002/jmv.28503 [doi] PST - ppublish SO - J Med Virol. 2023 Feb;95(2):e28503. doi: 10.1002/jmv.28503.