| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
Neurodegenerative disorders such as amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTLD) are characterized by the progressive degeneration of nerve cells in the brain and spinal cord. TDP-43 is the major pathogenic protein of ALS and FTLD. Previously I identified the involvement of TDP-43 in interaction with G4 (G-quadruplex)-containing RNA for long-distance transport in neurons. For the molecular dissection of TDP-43, I analyzed ALS-linked ten mutant TDP-43 proteins and detected all ten mutants with reduced activity of G4-RNA-binding. Furthermore, I identified that TDP-43 binds to cover the entire parallel-stranded G4 and maintains a stable conformation. These results suggested that the altered interaction between G4-RNAs and mutant proteins is somehow connected with the pathogenesis of ALS and FTLD.
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