| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
For the development of new vaccines against poultry red mite, Dermanyssus gallinae, a search was made for novel vaccine candidates expressed on the cell membrane of the midgut of the mite. Three kinds of molecules, whose expressions are predicted on the cell membrane, were identified, and their expressions on the midgut were confirmed by laser capture microdissection and RT-PCR. In addition, cathepsin D-like molecule, catD2, which was already identified in the course of the comprehensive analysis of genes expressed in the red mites done in our laboratory, was shown to be expressed in protonymph, deutonymph and adult and expressed regardless engorgement or starvation. The recombinant catD2 protein was not recognized by the sera from chickens fed by the red mites, suggesting that catD2 is a concealed antigen. Further analyses, including the detailed functions, the expression sites in red mites and the evaluation as vaccine antigens, are required to develop effective vaccines.
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