Cited by 181HIV Research and TreatmentRNA Interference and Gene DeliveryImmunotherapy and Immune Responses

Potent Immune Responses in Rhesus Macaques Induced by Nonviral Delivery of a Self-amplifying RNA Vaccine Expressing HIV Type 1 Envelope With a Cationic Nanoemulsion

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Bogers, W. M., Oostermeijer, H., Mooij, P., Koopman, G., Verschoor, E. J., Davis, D., Ulmer, J. B., Brito, L. A. +14 more·2015·Journal of Infectious Diseases

Abstract

Self-amplifying messenger RNA (mRNA) of positive-strand RNA viruses are effective vectors for in situ expression of vaccine antigens and have potential as a new vaccine technology platform well suited for global health applications. The SAM vaccine platform is based on a synthetic, self-amplifying mRNA delivered by a nonviral delivery system. The safety and immunogenicity of an HIV SAM vaccine encoding a clade C envelope glycoprotein formulated with a cationic nanoemulsion (CNE) delivery system was evaluated in rhesus macaques. The HIV SAM vaccine induced potent cellular immune responses that were greater in magnitude than those induced by self-amplifying mRNA packaged in a viral replicon particle (VRP) or by a recombinant HIV envelope protein formulated with MF59 adjuvant, anti-envelope binding (including anti-V1V2), and neutralizing antibody responses that exceeded those induced by the VRP vaccine. These studies provide the first evidence in nonhuman primates that HIV vaccination with a relatively low dose (50 µg) of formulated self-amplifying mRNA is safe and immunogenic.

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Crossref · 10.1093/infdis/jiu522

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  • For prophylactic mRNA vaccines, such T cell responses have, to the authors' best knowledge, only been detected in NHPs after vaccination with self-amplifying mRNA but not with non-amplifying mRNA.

    “and have, to our best knowledge, for prophylactic mRNA vaccines only been detected in NHPs after vaccination with self-amplifying mRNA31 but not with non-amplifying mRNA.”
  • Several preclinical studies have delivered mRNA vaccines encoding HIV proteins using multiple delivery vehicles, but they have had varied success.

    “Several preclinical studies have delivered mRNA vaccines encoding HIV proteins using multiple delivery vehicles, including cationic nanoemulsions109,161, DOTAP/DOPE liposomes162, polymers84,163,164 and ionizable LNPs165,166, but they have had varied success.”
  • Novel antigens are necessary to effectively target HIV in addition to potent delivery vehicles.

    “These studies suggest that novel antigens are necessary to effectively target HIV in addition to potent delivery vehicles.”

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Authors
Bogers, W. M., Oostermeijer, H., Mooij, P., Koopman, G., Verschoor, E. J., Davis, D., Ulmer, J. B., Brito, L. A., Cu, Y., Banerjee, K., Otten, G. R., Burke, B., Dey, A., Heeney, J. L., Shen, X., Tomaras, G. D., Labranche, C., Montefiori, D. C., Liao, H.-X., Haynes, B., Geall, A. J., & Barnett, S. W.
Affiliations
  • Biomedical Primate Research Centre (NL)
  • University of Cambridge (GB)
  • Duke University (US)
  • Duke Medical Center (US)
Corresponding author
Bogers, W. M.
Venue
Journal of Infectious Diseases
Published
2014-09-18
Volume
211
Issue
6
Pages
947-955
ISSN
  • 0022-1899 (ISSN-L)
  • 1537-6613
OpenAlex
W2162541845
Cited by
181
References
53
Citations by year
2026: 9 · 2025: 11 · 2024: 11 · 2023: 12 · 2022: 33 · 2021: 27 · 2020: 22 · 2019: 15 · 2018: 12 · 2017: 10 · 2016: 9 · 2015: 7 · 2014: 3
FWCI
4.31
Type
journal article
Language
en
Open access
Locations
  • The Journal of Infectious Diseases (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (PO1 AI066287-02)
  • National Institute of Allergy and Infectious Diseases (P01AI066287)
Topics
  • Life Sciences › Immunology and Microbiology › Virology › HIV Research and Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
Keywords
self-amplifying mRNA vaccine, cationic nanoemulsions, rhesus monkeys, cell-mediated immunity, neutralizing antibodies, MF59 adjuvant, vaccine safety, immunogenicity, HIV vaccine
MeSH terms
Animals, Antibodies, Viral, Cations, Cells, Cultured, Emulsions, Immunity, Cellular, Macaca mulatta, Male, RNA, Viral, HIV-1, HIV Infections, AIDS Vaccines, Animals, Outbred Strains, env Gene Products, Human Immunodeficiency Virus, Adaptive Immunity, Antibodies, Neutralizing

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