Huang L, Tang W, He L, Li M, Lin X, Hu A, Huang X,. Engineered probiotic Escherichia coli elicits immediate and long-term protection against influenza A virus in mice. Nat Commun. 2024 Aug 9;15(1):6802
Influenza virus infection remains a major global health problem and requires a universal vaccine with broad protection against different subtypes as well as a rapid-response vaccine to provide immediate protection in the event of an epidemic outbreak. Here, we show that intranasal administration of probiotic Escherichia coli Nissle 1917 activates innate immunity in the respiratory tract and provides immediate protection against influenza virus infection within 1 day. Based on this vehicle, a recombinant strain is engineered to express and secret five tandem repeats of the extracellular domain of matrix protein 2 from different influenza virus subtypes. Intranasal vaccination with this strain induces durable humoral and mucosal responses in the respiratory tract, and provides broad protection against the lethal challenge of divergent influenza viruses in female BALB/c mice. Our findings highlight a promising delivery platform for developing mucosal vaccines that provide immediate and sustained protection against respiratory pathogens.
See Also:
Latest articles in those days:
- Generation of Nasal Cell-Derived Human Alveolar Organoids and Organoid-Macrophage Assembloids for in Vitro Lung Modeling 8 hours ago
- Determinants of the Seasonal Influenza Vaccination Uptake Among People Aged 50 Years or Above During and After the Pandemic: A Systematic Review 21 hours ago
- [preprint]A GIS-based framework for standardized environmental characterization in One-Health surveillance: a case study of HPAI monitoring in wetlands 21 hours ago
- First detection and transatlantic introduction of Influenza A(H3N2) subclade K (J.2.4.1) into Ecuador: insights from genomic sentinel surveillance 21 hours ago
- Assessment of influenza virus and coronavirus tropism, replication competence and disease severity in ex vivo and in vitro cultures of the human respiratory tract 2 days ago
[Go Top] [Close Window]


