| Budget Amount *help |
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2013: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2012: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Fiscal Year 2011: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
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| Research Abstract |
In order to develop application of anti-mortalin antibody for diagnostics and delivery, we generated new antibodies and performed a characterization. We found that the cell internalizing and non-internalizing antibodies possess distinctly different epitopes. Mechanism of internalization was determined by adopting multiple inhibitor approach. We found that the antibody internalization was inhibited most strongly by Nystatin, implying that it involves lipid raft mediated endocytosis. We next used specific inhibitors of three raft pathways. The internalization was strongly inhibited by dynamin inhibitor. On the other hand, caveolin-1 inhibitor and CDC42 inhibitor showed weak effect. It was concluded that the internalization of new internalizing anti-mortalin antibodies is mostly mediated by Dynamin and Caveolin dependent endocytosis.
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