| Budget Amount *help |
¥19,760,000 (Direct Cost: ¥15,200,000、Indirect Cost: ¥4,560,000)
Fiscal Year 2013: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2012: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2011: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
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| Research Abstract |
Streptococcus pneumoniae is a common causative agent of pneumonia with high morbidity and mortality rates. In this study, we analyzed how Streptococcus pneumoniae evades host innate immunity. We revealed that pneumococcal a-enolase induce neutrophil extracellular trap formation and NETosis. Utilizing several biochemical assays and a recombinant procedure, a pneumococcal cell wall anchoring protein, PfbA, was found to function as an anti-phagocytic factor. In addition, we elucidated that S. pneumoniae invades human erythrocytes and escapes from neutrophil- and antibiotics-mediated killing.
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