| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
It is well known that adult neurogenesis is enhanced after ischemic brain injury accompanied with local tissue acidosis. However, the molecular mechanisms mediating such phenomena remain to be elucidated. ASIC1a (acid-sensing ion channel-1a) is an ion channel activated by extracellular protons. Using a combination of morphological and electrophysiological approaches, we found that ASIC1a was required for proper dendritic development and synaptic organization of mouse hippocampal newborn neurons. These results raise the possibility that ASIC1a might regulate adult hippocampal neurogenesis via sensing extracellular acidification during cerebral ischemia. Definitive understandings of roles of ASIC1a in adult neurogenesis will contribute to development of non-invasive nerve repair treatments through activation of endogenous neural stem cells in the brain.
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