Comparative immunogenicity and efficacy of equivalent outer membrane vesicle and glycoconjugate vaccines against nontyphoidal Salmonella

Micoli F., Rondini S., Alfini R., Lanzilao L., Necchi F., Negrea A., Rossi O., Brandt C., Clare S., Mastroeni P., Rappuoli R., Saul A., MacLennan CA.

Significance Bacteria, such as nontyphoidal Salmonella , are responsible for a large global burden of disease. Due to limited need in developed countries and consequent lack of commercial incentive, vaccines are unavailable against many bacteria. Glycoconjugates constitute the standard bacterial vaccine approach, but can be costly, particularly where multivalent preparations are required. This report compares a low-cost vesicle-based technology, known as Generalized Modules for Membrane Antigens (GMMA), with glycoconjugate in bivalent vaccines against nontyphoidal Salmonella . In head-to-head immunogenicity and infection studies in mice, GMMA performed at least as well as equivalent glycoconjugate vaccine, indicating good potential of this approach. Given that many bacteria are amenable to genetic engineering for GMMA production, the GMMA strategy could provide a breakthrough for a range of needed bacterial vaccines.

DOI

10.1073/pnas.1807655115

Type

Journal article

Publisher

Proceedings of the National Academy of Sciences

Publication Date

2018-10-09T00:00:00+00:00

Volume

115

Pages

10428 - 10433

Total pages

5

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