Final published version
Licence: CC BY: Creative Commons Attribution 4.0 International License
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Immunogenicity and Protective Efficacy of an Intranasal Live-attenuated Vaccine Against SARS-CoV-2
AU - Park, Jun-Gyu
AU - Oladunni, Fatai S.
AU - Rohaim, Mohammed A.
AU - Whittingham-Dowd, Jayde
AU - Tollitt, James
AU - Hodges, Matthew D.J.
AU - Fathallah, Nadin
AU - Assas, Muhsref Bakri
AU - Alhazmi, Wafaa
AU - Almilaibary, Abdullah
AU - Iqbal, Munir
AU - Chang, Pengxiang
AU - Escalona, Renee
AU - Shivanna, Vinay
AU - Torrelles, Jordi B.
AU - Worthington, John J.
AU - Jackson-Jones, Lucy H.
AU - Martinez-Sobrido, Luis
AU - Munir, Muhammad
PY - 2021/9/30
Y1 - 2021/9/30
N2 - SUMMARY Global deployment of an effective and safe vaccine is necessary to curtail the coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Here, we evaluated a Newcastle disease virus (NDV)-based vectored-vaccine in mice and hamsters for its immunogenicity, safety and protective efficacy against SARS-CoV-2. Intranasal administration of recombinant (r)NDV-S vaccine expressing spike (S) protein of SARS-CoV-2 to mice induced high levels of SARS-CoV-2-specific neutralizing immunoglobulin A (IgA) and IgG2a antibodies and T cell-mediated immunity. Hamsters immunised with two doses of vaccine showed complete protection from lung infection, inflammation, and pathological lesions following SARS-CoV-2 challenge. Importantly, administration of two doses of intranasal rNDV-S vaccine significantly reduced the SARS-CoV-2 shedding in nasal turbinate and lungs in hamsters. Collectively, intranasal vaccination has the potential to control infection at the site of inoculation, which should prevent both clinical disease and virus transmission to halt the spread of the COVID-19 pandemic.
AB - SUMMARY Global deployment of an effective and safe vaccine is necessary to curtail the coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Here, we evaluated a Newcastle disease virus (NDV)-based vectored-vaccine in mice and hamsters for its immunogenicity, safety and protective efficacy against SARS-CoV-2. Intranasal administration of recombinant (r)NDV-S vaccine expressing spike (S) protein of SARS-CoV-2 to mice induced high levels of SARS-CoV-2-specific neutralizing immunoglobulin A (IgA) and IgG2a antibodies and T cell-mediated immunity. Hamsters immunised with two doses of vaccine showed complete protection from lung infection, inflammation, and pathological lesions following SARS-CoV-2 challenge. Importantly, administration of two doses of intranasal rNDV-S vaccine significantly reduced the SARS-CoV-2 shedding in nasal turbinate and lungs in hamsters. Collectively, intranasal vaccination has the potential to control infection at the site of inoculation, which should prevent both clinical disease and virus transmission to halt the spread of the COVID-19 pandemic.
KW - Vaccines
KW - SARS-CoV-2
KW - COVID-19
KW - Pandemic
KW - Viral Infection
KW - Immunity
U2 - 10.1016/j.isci.2021.102941
DO - 10.1016/j.isci.2021.102941
M3 - Journal article
VL - 24
JO - iScience
JF - iScience
SN - 2589-0042
IS - 9
M1 - 102941
ER -