Adjuvant system AS01: from mode of action to effective vaccines

Autor: François Roman, Wivine Burny, Maria Angeles Ceregido, Béatrice Laupèze, Stéphane T Temmerman, Lucile Warter, Margherita Coccia
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Expert Review of Vaccines, Vol 23, Iss 1, Pp 715-729 (2024)
Druh dokumentu: article
ISSN: 14760584
1744-8395
1476-0584
DOI: 10.1080/14760584.2024.2382725
Popis: Introduction The use of novel adjuvants in human vaccines continues to expand as their contribution to preventing disease in challenging populations and caused by complex pathogens is increasingly understood. AS01 is a family of liposome-based vaccine Adjuvant Systems containing two immunostimulants: 3-O-desacyl-4’-monophosphoryl lipid A and the saponin QS-21. AS01-containing vaccines have been approved and administered to millions of individuals worldwide.Areas covered Here, we report advances in our understanding of the mode of action of AS01 that contributed to the development of efficacious vaccines preventing disease due to malaria, herpes zoster, and respiratory syncytial virus. AS01 induces early innate immune activation that induces T cell-mediated and antibody-mediated responses with optimized functional characteristics and induction of immune memory. AS01-containing vaccines appear relatively impervious to baseline immune status translating into high efficacy across populations. Currently licensed AS01-containing vaccines have shown acceptable safety profiles in clinical trials and post-marketing settings.Expert opinion Initial expectations that adjuvantation with AS01 could support effective vaccine responses and contribute to disease control have been realized. Investigation of the utility of AS01 in vaccines to prevent other challenging diseases, such as tuberculosis, is ongoing, together with efforts to fully define its mechanisms of action in different vaccine settings.
Databáze: Directory of Open Access Journals
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