2009 Fiscal Year Final Research Report
Regulation of neurogenesis by two-hour cycle biological clock
Project/Area Number |
17024027
|
Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
|
Allocation Type | Single-year Grants |
Review Section |
Biological Sciences
|
Research Institution | Kyoto University |
Principal Investigator |
KAGEYAMA Ryoichiro Kyoto University, ウイルス研究所, 教授 (80224369)
|
Project Period (FY) |
2005 – 2009
|
Keywords | 神経幹細胞 / Hes1 / Notchシグナル / オシレーション / プロニューラル遺伝子 / 短周期遺伝子発現リズム / ニューロン新生 / 成体脳 |
Research Abstract |
In embryonic neural stem cells, Hes1 expression oscillates with a period of about two hours, and Hes1 oscillations drive oscillatory expression of the proneural gene Ngn2 and the Notch ligand Dll1. Dll1 oscillations lead to mutual activation of Notch signaling and maintenance of neural stem cells. When Hes1 expression disappears, Ngn2 is expressed in a sustained manner, thereby promoting neuronal differentiation. In the adult brain, neurogenesis from neural stem cells is essential, and neural stem cells are maintained by the Notch-Hes pathway. These results revealed the significance of the rhythmic gene Hes1 in regulation of embryonic and adult neural stem cells.
|
-
-
-
[Journal Article] The cyclic gene Hesl contributes to diverse differentiation responses of embryonic stem cells.2009
Author(s)
Kobayashi, T., Mizuno, H., Imayoshi, I., Fumsawa, C., Shirahige, K., Kageyama, R.
-
Journal Title
Genes & Dev 23
Pages: 1870-1875
Peer Reviewed
-
-
[Journal Article] Roles of continuous neurogenesis in the structural and functional integrity of the adult forebrain.2008
Author(s)
Imayoshi, I., Sakamoto, M., Ohtsuka, T., Takao, K., Miyakawa, T., Yamaguchi, M., Mori, K., Ikeda, T., Itohara, S., Kageyama. R.
-
Journal Title
Nature Neurosci 11
Pages: 1153-11611
Peer Reviewed
-
-
-
-
-
[Journal Article] The initiation and propagation of Hes 7 oscillation are cooperatively regulated by Fgf and Notch signaling in the somite segmentation clock.2007
Author(s)
Niwa, Y, Masamizu, Y, Liu, T., Nakayama, R., Deng, C. -X., Kageyama、R.
-
Journal Title
Dev. Cell 13
Pages: 298-304
Peer Reviewed
-
[Journal Article] Ultradian oscillations in Stat, Smad and Hesl expression in response to serum. Proc.2007
Author(s)
Yoshiura, S., Ohtsuka, T., Takenaka, Y., Nagahara, H., Yoshikawa, K., Kageyama、R.
-
Journal Title
Natl. Acad. Sci. USA 104
Pages: 11292-11297
Peer Reviewed
-
-
[Journal Article] A molecular insight of Hes5-dependent inhibition of myelin gene expression:old partners and new players.2006
Author(s)
Liu, A., Li, J., Marin-Husstege, M., Kageyama, R., Fan, Y, Gelinas, C., Casaccia-Bonnefil, P.
-
Journal Title
EMBO J 25
Pages: 4833-4842
Peer Reviewed
-
[Journal Article] Sustained Notch signaling in progenitors is required for sequential emergence of distinct cell lineages during organogenesis.2006
Author(s)
Zhu, X., Zhang, J., Tollkuhn, J., Ohsawa, R., Bresnick, E.H., Guillemot, F., Kageyama、R., Rosenfeld, M.G.
-
Journal Title
Genes & Dev 20
Pages: 2739-2753
Peer Reviewed
-
-
-
[Journal Article] Real-time imaging of the somite segmentation clock:revelation of unstable oscillators in the individual presomitic mesoderm cell.2006
Author(s)
Masamizu, Y, Ohtsuka, T., Takashima, Y, Nagahara, H., Takenaka, Y, Yoshikawa, K., Okamura, H., Kageyama. R.
-
Journal Title
Proc. Natl. Acad. Sci. USA103
Pages: 1313-1318
Peer Reviewed
-
[Journal Article] Visualization of embryonic neural stem cells using Hes promoters in transgenic mice.2006
Author(s)
Ohtsuka, T., Imayoshi, I., Shimojo, H., Nishi, E, Kageyama. R., McConnell, S.K.
-
Journal Title
Mol. Cell. Neurosci. 31
Pages: 109-122
Peer Reviewed
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-