| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2010: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Research Abstract |
We performed preliminary experiments to set up the condition of extracting RNA from single cochlear cells and amplifying the cDNA linearly. In addition, we found the function of several genes in the cochlea. These results will contribute to the realization of cochlear regenerative medicine. Complete inhibition of Notch signaling in the mouse cochlear caused small numbers of inner hair cells only in the apical turn. This result indicates that Notch signaling is involved not only in the determination of cell fate but also in the maintenance of the cochlear sensory epithelial progenitors. The analysis of EP4 knockout mice revealed that prostaglandin E physiologically protects cochlear hair cells. We also found the new markers of cochlear supporting cells, Septin4, Septin5, and Septin7.
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