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- W4361011289 abstract "Abstract Group A Streptococcus (GAS) is a human pathogenic bacterium that can trigger a wide range of diseases, including the autoimmune diseases acute rheumatic fever and rheumatic heart disease, causing major morbidity and mortality in many low‐ and middle‐income countries. Primary intervention programs have had limited success thus far, and a licensed vaccine has yet to be developed. The pilus of GAS is known to be involved in host cell adhesion, biofilm formation and immune evasion. We have a mucosal vaccine in development that expresses the pilus of GAS on the surface of the nonpathogenic bacterium Lactococcus lactis. To expand strain coverage, we combined seven L. lactis constructs, each expressing a different GAS pilus variant, and investigated the systemic and mucosal immune responses following immunization. Mice immunized with this combination showed specific immunoglobin G and immunoglobin A responses to the GAS pilus proteins of vaccine strains, at levels comparable to mice immunized with a single construct. Cross‐reactivity to pilus proteins of nonvaccine strains was also evident. Furthermore, protective efficacy against a homologous strain of GAS in a murine nasopharyngeal colonization model was observed. Overall, this study provides further evidence for using pilus‐expressing lactic acid bacteria as a vaccine to prevent upper respiratory tract GAS infections." @default.
- W4361011289 created "2023-03-30" @default.
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- W4361011289 date "2023-04-24" @default.
- W4361011289 modified "2023-10-17" @default.
- W4361011289 title "Expanding strain coverage of a group A <i>Streptococcus</i> pilus–expressing <i>Lactococcus lactis</i> mucosal vaccine" @default.
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- W4361011289 doi "https://doi.org/10.1111/imcb.12643" @default.
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