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Characterization of the immune response to a TLR4-based adjuvant in murine models

Abstract : In 2014 tuberculosis (TB) surpassed HIV as the leading cause of death by an infectious disease worldwide emphasizing the urgent need to develop a more effective vaccine against this airborne disease. The Infectious Disease Research Institute (IDRI) TB candidate vaccine ID93/GLA-SE is currently undergoing a Phase IIa clinical trial and has shown promising preclinical and clinical results. In murine models of TB this vaccine drives a strong CD4 TH1 response, which is thought to be important for protection against TB, and an IgG2c skewed B cell response. However, little is known about the cellular and molecular events that drive GLA-SE adjuvanticity.To that end, the main objective of my thesis was to elucidate the key mechanisms that connect innate and adaptive immune responses elicited by this adjuvant in the murine model. A secondary objective was to evaluate the possibility of using ID93/GLA-SE as adjunct therapy to existing antibiotic treatments to reduce relapse rates after TB treatment.Collectively the results obtained during this research project and thesis broaden our knowledge and our current understanding of the mechanisms involved in the adaptive immune response induced by GLA-SE and show the capacity of ID93/GLA-SE to be used as a therapeutic vaccine against TB to reduce post-therapeutic relapse rates.
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Natasha Dubois. Characterization of the immune response to a TLR4-based adjuvant in murine models. Immunology. Université Paris-Saclay, 2016. English. ⟨NNT : 2016SACLS131⟩. ⟨tel-01693315⟩

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