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Here, we report on a first-in-man trial where the tuberculosis (TB) vaccine Ag85B-ESAT-6 (H1) was adjuvanted with escalating doses of a novel liposome adjuvant CAF01. On their own, protein antigens cannot sufficiently induce immune responses in humans, and require the addition of an adjuvant system to ensure appropriate delivery and concomitant immune activation. To date no approved adjuvants are...
Biosynthesis and acquisition of nutrients during infection are integral to pathogenesis. Members of a metabolic pathway, the glycine cleavage system, have been identified in virulence screens of the intracellular bacterium Francisella tularensis but their role in pathogenesis remains unknown. This system generates 5,10-methylenetetrahydrofolate, a precursor of amino acid and DNA synthesis, from glycine...
Francisella tularensis, the causative agent of tularemia and Category A biodefense agent, is known to replicate within host macrophages, though the pathogenesis of this organism is incompletely understood. We have isolated a variant of F. tularensis live vaccine strain (LVS) based on colony morphology and its effect on macrophages. Human monocyte-derived macrophages produced more tumor necrosis factor...
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