Analysis of the mechanism of pathological synaptic alterations in Alzheimer's disease
Project/Area Number |
20300124
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Nerve anatomy/Neuropathology
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Research Institution | Kyoto University |
Principal Investigator |
KINOSHITA Ayae Kyoto University, 大学院・医学研究科, 教授 (80321610)
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Co-Investigator(Kenkyū-buntansha) |
KUBOTA Masakazu 京都大学, 大学院・医学研究科, 助教 (80452267)
植村 健吾 京都大学, 医学研究科, 助教 (00378663)
|
Project Period (FY) |
2008 – 2010
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Project Status |
Completed (Fiscal Year 2010)
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Budget Amount *help |
¥19,760,000 (Direct Cost: ¥15,200,000、Indirect Cost: ¥4,560,000)
Fiscal Year 2010: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2009: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2008: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
|
Keywords | アルツハイマー病 / 老化 / 神経変性 / シナプス / 認知症 / N-cadherin / インスリン / プレセニリン |
Research Abstract |
We investigated the pathological mechanisms caused by mutations of Presenilin 1, a responsible protein for familial Alzheimer's disease(AD). We focused on insulin signaling as an influential factor of PS1 and revealed its effect on the localization and conformation of PS1. Our result showed that insulin inhibited GSK3 beta activation, thus leading to inhibition of PS1 phosphorylation and that insulin signaling is involved in the translocation of PS1 to the cell surface and its cleavage functions. Furthermore, we found that insulin receptor, IR, is cleaved by PS1, then its intracellular domain translocates to the nucleus, which activates transcription of Akt. Taken together, we conclude that insulin signaling is modulated by PS1. Next, we created a novel AD model mouse with diabetic condition by giving high fat diet to APP Tg mouse. This mouse showed a marked impairment of short-term memory, suggesting that diabetes is an aggravating factor for AD.
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Report
(4 results)
Research Products
(57 results)
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[Journal Article] N-cadherin regulates p38 MAPK signaling via association with JNK-associated leucine zipper protein : implications for neurodegeneration in Alzheimer disease.2011
Author(s)
Ando K, Uemura K, Kuzuya A, Maesako M, Asada-Utsugi M, Kubota M, Aoyagi N, Yoshioka K, Okawa K, Inoue H, Kawamata J, Shimohama S, Arai T, Takahashi R, Kinoshita A
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Journal Title
J Biol Chem 286
Pages: 7619-7628
Related Report
Peer Reviewed
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[Journal Article] N-cadherin regulates p38 MAPK signaling via association with JNK-associated leucine zipper protein : implications for neurodegeneration in Alzheimer disease2011
Author(s)
Ando K, Uemura K, Kuzuya A, Maesako M, Asada-Utsugi M, Kubota M, Aoyagi N, Yoshioka K, Okawa K, Inoue H, Kawamata J, Shimohama S, Arai T, Takahashi R, Kinoshita A
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Journal Title
Journal of Biological Chemistry
Volume: 286
Pages: 7619-7628
Related Report
Peer Reviewed
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[Journal Article] N-cadherin-based adhesion enhances Aβ release and decrerased Aβ42/40 ratio.2009
Author(s)
Uemura, K, Lill CM, Banks M, Aoyagi N, Ando, K., Kubota M, Kihara T, Nishimoto T, Sugimoto H, Takahashi R, Hyman BT, Shimohama S, Berezovska O, Kinoshita A
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Journal Title
J Neurochem 156
Pages: 350-360
Related Report
Peer Reviewed
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[Journal Article] N-cadherin-based adhesion enhances Abeta release and decreased Abeta42/40 ratio2009
Author(s)
Uemura K, Lill CM, Banks M, Aoyagi N, Ando K, 久保田正和, 木原武士, Nishimoto T, Sugimoto H, 高橋良輔, Hyman BT, Shimohama S, 木下彩栄
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Journal Title
Journal of Neurochemistry 156
Pages: 350-360
Related Report
Peer Reviewed
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[Journal Article]2009
Author(s)
木下彩栄, 他
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Journal Title
ガイドライン 外来診療 2009(日経メディカル開発)
Pages: 395-402
Related Report
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[Journal Article]2009
Author(s)
木下彩栄, 他
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Journal Title
外来診療ハンディガイド(日経メディカル開発)
Pages: 200-203
Related Report
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[Journal Article] J Neurochemistry N-cadherin enhances APP dimerization at the extracellular domain and modulates Abeta production.
Author(s)
Megumi Asada-Utsugi, Kengo Uemura, Yashuha Noda, Akira Kuzuya, Masato Maesako, Koichi Ando, Masakazu Kubota, Kiwamu Watanabe, Makio Takahashi, Takeshi Kihara, Shun Shimohama, Ryosuke Takahashi, Oksana Berezovska, Ayae Kinoshita
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Journal Title
J Neurochemistry(accepted)
Related Report
Peer Reviewed
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