| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
To clarify the signal transduction mechanism for neuronal polarity determination, we focused M6a, a major plasma membrane protein in growth cones. We showed that suppression of the M6a expression in mouse brain at developmental stage caused delay of neuronal polarity determination and the axonal elongation. M6a was localized in lipid raft known as a micro membrane domain for signal transductions. M6a was accumulated on plasma membrane by an extracellular matrix, laminin, and which induced clustering of lipid rafts on the cell-surface. Subsequently, intercellular signal transduction molecules associated with M6a and their downstream molecules for neuronal polarity were assembled in vicinity of the lipid rafts. Thus our data suggest that M6a acts as a signal transducer for neuronal polarity determination that responds to extracellular signals.
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