2006年6月
Small GTPase Rnd1 is involved in neuronal activity-dependent dendritic development in hippocampal neurons
NEUROSCIENCE LETTERS
- ,
- ,
- 巻
- 400
- 号
- 3
- 開始ページ
- 218
- 終了ページ
- 223
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.neulet.2006.02.064
- 出版者・発行元
- ELSEVIER IRELAND LTD
Rho family small GTPases are key regulators for neuronal morphogenesis including dendritogenesis. We recently have shown that Rnd1, a member of the Rho family, is highly expressed in brain during the synaptogenic stage and is involved in dendritic spine formation. However, the mechanism by which Rnd1 regulates dendritic development including spine morphogenesis remains unknown. Here we report that Rnd1, a member of the Rho family, plays a critical role in neuronal activity-dependent dendritic development in hippocampal neurons. Overexpression of Rnd1 promoted dendritic growth and branching in cultured hippocampal neurons. On the other hand, suppression of endogenous Rnd1 expression by RNA interference significantly inhibited neuronal activity-dependent dendritic development and this inhibitory effect was canceled by inhibition of RhoA effector ROCK. In addition, knockdown of Rnd1 also abolished dendritic development promoted by treatment with brain-derived neurotrophic factor in hippocampal neurons. Our findings demonstrate that Rnd1 is involved in signaling pathways of neuronal activity-dependent dendritic development. (c) 2006 Elsevier Ireland Ltd. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.neulet.2006.02.064
- ISSN : 0304-3940
- PubMed ID : 16530331
- Web of Science ID : WOS:000237873100007