Modifications to the HIV-1 SAAVI MVA-C vaccine improve in vitro expression and in vivo immunogenicity. Douglass, N., van Diepen, M. T., Chapman, R., Galant, S., Margolin, E., Ximba, P., Hermanus, T., Moore, P. L., & Williamson, A. L. Vaccine, 39(3):463–468, Elsevier Ltd, jan, 2020.
doi  abstract   bibtex   
Two HIV-1 vaccines (SAAVI DNA-C2 and SAAVI MVA-C) were previously developed in South Africa and tested in preclinical studies and Phase 1 clinical trials. Here we report on improvements made to the SAAVI MVA-C vaccine design which include: the use of different promoters for both the Gag and Env genes, replacement of the native Gag gene with an in silico designed subtype C mosaic Gag antigen which forms virus-like particles and the modification of Env by sequence changes to improve stability and transport to the cell surface. A head-to-head comparison of the newly conceived MVAGD5 candidate vaccine with SAAVI MVA-C showed increased in vitro expression of both Env and Gag, and superior immunogenicity in rabbits. MVAGD5 induced high levels of binding antibodies to Env and Tier 1A and 1B neutralizing antibodies, neither of which were induced by SAAVI MVA-C.
@article{Douglass2020,
abstract = {Two HIV-1 vaccines (SAAVI DNA-C2 and SAAVI MVA-C) were previously developed in South Africa and tested in preclinical studies and Phase 1 clinical trials. Here we report on improvements made to the SAAVI MVA-C vaccine design which include: the use of different promoters for both the Gag and Env genes, replacement of the native Gag gene with an in silico designed subtype C mosaic Gag antigen which forms virus-like particles and the modification of Env by sequence changes to improve stability and transport to the cell surface. A head-to-head comparison of the newly conceived MVAGD5 candidate vaccine with SAAVI MVA-C showed increased in vitro expression of both Env and Gag, and superior immunogenicity in rabbits. MVAGD5 induced high levels of binding antibodies to Env and Tier 1A and 1B neutralizing antibodies, neither of which were induced by SAAVI MVA-C.},
author = {Douglass, Nicola and van Diepen, Michiel T. and Chapman, Rosamund and Galant, Shireen and Margolin, Emmanuel and Ximba, Phindile and Hermanus, Tandile and Moore, Penny L. and Williamson, Anna Lise},
doi = {10.1016/j.vaccine.2020.12.024},
file = {:C$\backslash$:/Users/01462563/AppData/Local/Mendeley Ltd./Mendeley Desktop/Downloaded/Douglass et al. - 2020 - Modifications to the HIV-1 SAAVI MVA-C vaccine improve in vitro expression and in vivo immunogenicity.pdf:pdf},
issn = {18732518},
journal = {Vaccine},
keywords = {Env,Gag mosaic,HIV-1 vaccines,Immunogenicity,MVA,Neutralization,fund{\_}not{\_}ack,original},
mendeley-tags = {fund{\_}not{\_}ack,original},
month = {jan},
number = {3},
pages = {463--468},
publisher = {Elsevier Ltd},
title = {{Modifications to the HIV-1 SAAVI MVA-C vaccine improve in vitro expression and in vivo immunogenicity}},
volume = {39},
year = {2020}
}

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