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10.3389/fimmu.2021.637654

http://scihub22266oqcxt.onion/10.3389/fimmu.2021.637654
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suck abstract from ncbi


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pmid33732258      Front+Immunol 2021 ; 12 (ä): 637654
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  • A Novel DNA Vaccine Against SARS-CoV-2 Encoding a Chimeric Protein of Its Receptor-Binding Domain (RBD) Fused to the Amino-Terminal Region of Hepatitis B Virus preS1 With a W4P Mutation #MMPMID33732258
  • Jeong H; Choi YM; Seo H; Kim BJ
  • Front Immunol 2021[]; 12 (ä): 637654 PMID33732258show ga
  • A coronavirus SARS-CoV-2, which has caused the pandemic viral pneumonia disease COVID-19, significantly threatens global public health, highlighting the need to develop effective and safe vaccines against its infection. In this study, we developed a novel DNA vaccine candidate against SARS-CoV-2 by expressing a chimeric protein of its receptor-binding domain (RBD) fused to a 33-bp sequence (11 aa) from the hepatitis B virus (HBV) preS1 region with a W4P mutation (W4P-RBD) at the N-terminal region and evaluated its immunogenicity. In vitro transfection experiments in multiple cell lines demonstrated that W4P-RBD vs. wild-type RBD protein (W-RBD) led to enhanced production of IL-6 and TNFalpha at the transcription and translation levels, suggesting the adjuvant potential of N-terminal HBV preS1 sequences for DNA vaccines against SARS-CoV-2. W4P-RBD also led to enhanced production of IgG and IgA, which can neutralize and block SARS-CoV-2 infection in both blood sera and bronchoalveolar lavage (BAL) fluid from the lung in vaccinated mice. Additionally, W4P-RBD led to an enhanced T-cell-mediated cellular immune response under S1 protein stimulation. In summary, W4P-RBD led to robust humoral and cell-mediated immune responses against SARS-CoV-2 in vaccinated mice, highlighting its feasibility as a novel DNA vaccine to protect against SARS-CoV-2 infection.
  • |*Mutation[MESH]
  • |Animals[MESH]
  • |Antibodies, Neutralizing/blood/immunology[MESH]
  • |Antibodies, Viral/blood/immunology[MESH]
  • |COVID-19 Vaccines/*immunology[MESH]
  • |COVID-19/*prevention & control/virology[MESH]
  • |Cell Line, Tumor[MESH]
  • |Chlorocebus aethiops[MESH]
  • |HEK293 Cells[MESH]
  • |Hepatitis B Surface Antigens/*genetics/*immunology[MESH]
  • |Humans[MESH]
  • |Immunogenicity, Vaccine[MESH]
  • |Male[MESH]
  • |Mice[MESH]
  • |Mice, Inbred C57BL[MESH]
  • |Protein Domains/*immunology[MESH]
  • |Protein Precursors/*genetics/*immunology[MESH]
  • |Recombinant Fusion Proteins/*immunology[MESH]
  • |SARS-CoV-2/*immunology[MESH]
  • |Vaccination/methods[MESH]
  • |Vaccines, DNA/*immunology[MESH]


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