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Heat shock proteins (HSPs) play important roles in the pathogenesis of pneumococcal infection, and they are considered as potential protein vaccine antigens. In this study, we investigated the efficacy of immunization with pneumococcal HSPs, including ClpP (hsp100/Clp peptidase subunit), DnaJ (hsp40) and GroEL (hsp60), to protect against pneumococcal carriage, lung colonization and sepsis in mouse...
Protein-based vaccines are considered to be the next-generation of pneumococcal vaccines. Here we evaluated the protection elicited by immunization with recombinant glutamyl tRNA synthetase (Gts), polyamine transport protein D (PotD) and sortase A (SrtA) antigens in preclinical mouse models. In mucosal immunization studies, intranasal immunization with either Gts, PotD or SrtA could significantly...
Increasing mortality, morbidity and economic costs have been paid to pneumococcal diseases every year. Currently, vaccination is the most promising strategy to reduce the occurrence of pneumococcal infection. In this study, we investigated the protective efficacy of immunization with recombinant DnaJ (hsp40) protein against infections of different serotypes of Streptococcus pneumoniae. We demonstrated...
Intranasal delivery of pneumococcal protein vaccines would be a promising way to prevent invasive pneumococcal infection. Using an invasive infection model by intranasal inoculation of pneumococci, we demonstrated that immunizing mice intranasally with a mixture of ClpP (the caseinolytic protease) and CbpA (Choline binding protein A) elicited better protection than that of immunizing either single...
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