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Cationic lipids as one-component vaccine adjuvants: A promising alternative to alum

Abstract : Effective vaccine formulations consist of several components: an antigen carrier, the antigen, a stimulator of cellular immunity such as a Toll-like Receptors (TLRs) ligand, and a stimulator of humoral response such as an inflammasome activator. Here, we investigated the immunostimulatory and adjuvant properties of lipopolyamines, cationic lipids used as gene carriers. We identified new lipopolyamines able to activate both TLR2 and TLR4 and showed that lipopolyamines interact with TLRs via a mechanism different from the one used by bacterial ligands, activating a strong type-I IFN response, pro-inflammatory cytokines and IL-1 beta secretion. The TLR and inflammasome stimulations, together with the antigen carrier properties of lipopolyamines, resulted in both humoral and cellular immunity in mice vaccinated against OVA and make lipopolyamines promising one-component vaccine adjuvants.
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https://hal-cnrs.archives-ouvertes.fr/hal-03292041
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Submitted on : Tuesday, July 20, 2021 - 10:29:11 AM
Last modification on : Friday, July 23, 2021 - 3:53:00 AM

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Malvina Pizzuto, Pascal Bigey, Anne-Marie Lachages, Celine Hoffmann, Jean-Marie Ruysschaert, et al.. Cationic lipids as one-component vaccine adjuvants: A promising alternative to alum. Journal of Controlled Release, Elsevier, 2018, 287, pp.67-77. ⟨10.1016/j.jconrel.2018.08.020⟩. ⟨hal-03292041⟩

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