Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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Outline of Final Research Achievements |
In this research project, we carried out a research plan aimed at elucidating the modification mechanism of synaptic vesicle refilling with neurotransmitter and its effect on synaptic transmission. By analyzing vesicular glutamate transporter 1 (VGLUT1)-deficient calyx of Held synapses, we found that VGLUT1 loss causes a drastic reduction in SV refilling rate down to 25% of wild-type value, with only subtle changes in basic synaptic parameters because of VGLUT2 expression. We found that the synaptic vesicle filling rate is an important rate-limiting process in central nervous system excitatory synapses.
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