2009 Fiscal Year Final Research Report
Analysis of the locomotor circuit formation in zebrafish spinal cord
Project/Area Number |
19300118
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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 |
Neuroscience in general
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Research Institution | National Institutes of Natural Sciences Okazaki Research Facilities |
Principal Investigator |
HIGASHIJIMA Shin-ichi National Institutes of Natural Sciences Okazaki Research Facilities, 岡崎統合バイオサイエンスセンター, 准教授 (80270479)
|
Project Period (FY) |
2007 – 2009
|
Keywords | ゼブラフィッシュ / 神経分化 / 神経回路 / トランスジェニック / 脊髄 |
Research Abstract |
The p2 progenitor domain in the ventral spinal cord gives rise to two interneuron subtypes, V2a and V2b. The mechanism as to how V2a and V2b neurons arise from a single progenitor domain was unknown. We showed in this study that p2 progenitors divide once to produce V2a/V2b neuron pairs, indicating that V2a and V2b neurons are generated by the asymmetric division of pair-producing progenitor cells. We also showed that Delta-Notch interactions between sister cells play a critical role in the final outcome of these asymmetric divisions. This mechanism for determining cell fate is similar to asymmetric divisions that occur during Drosophila neurogenesis, where ganglion mother cells divide once to produce distinct neurons. However, unlike in Drosophila, the divisional axes of p2 progenitors in zebrafish were not fixed. We report that the terminal division of pair-producing progenitor cells in vertebrate neurogenesis can reproducibly produce two distinct neurons through a mechanism that may not depend on the orientation of the division axis.
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[Journal Article] Proneural gene-linked neurogenesis in zebrafish cerebellum.2010
Author(s)
Kani, S., Bae, Y-K, Shimizu T, Tanabe, K., Satou, C., Parsons, M., Scott, E., Baier, H., Higashijima, S., Hibi, M.
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Journal Title
Developmental Biology (in press)
Peer Reviewed
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[Journal Article] Dermal morphogenesis controls lateral line patterning during postembryonic development of teleost fish.2010
Author(s)
Wada, H., Ghysen, A., Satou, C., Higashijima, S, Kawakami, K., Hamaguchi, S., Sakaizumi, M.
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Journal Title
Developmental Biology 340
Pages: 583-594
Peer Reviewed
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[Journal Article] Illuminating Cell-Cycle Progression in the Developing Zebrafish Embryo.2009
Author(s)
Sugiyama, M., Sakaue-Sawano, A., Iimura, T., Fukami, K., Kitaguchi, T., Kawakami, K., Okamoto, H., Higashijima, S., Miyawaki, A.
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Journal Title
Proc. Natl. Acad. Sci. (USA) 106
Pages: 20812-20817
Peer Reviewed
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[Journal Article] Functional role of a specialized class of spinal commissural inhibitory neurons during fast escapes in zebrafish.2009
Author(s)
Satou, C., Kimura, Y., Kohashi, T., Horikawa, K., Takeda, H., Oda, Y., Higashijima, S.
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Journal Title
J. Neuroscience 29
Pages: 6780-6793
Peer Reviewed
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[Journal Article] Anatomy of zebrafish cerebellum and screen for mutations affecting its development.2009
Author(s)
Bae, Y., Kani, S., Shimizu, T., Tanabe, K., Nojima, H., Kimura, Y., Higashijima, S., Hibi, M.
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Journal Title
Developmental Biology 300
Pages: 406-426
Peer Reviewed
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[Journal Article] From the Olfactory Bulb to Higher Brain Centers: Genetic Visualization of Secondary Olfactory Pathways in Zebrafish.2009
Author(s)
Miyasaka, N., Morimoto, K., Tsubokawa, T., Higashijima, S., Okamoto, H., Yoshihara, Y.
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Journal Title
J. Neuroscience 29
Pages: 4756-4767
Peer Reviewed
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[Journal Article] Vsx2 in the zebrafish retina: restricted lineages through depression.2009
Author(s)
Vitorino, M., Jusf, P.R., Maurus, D., Kimura, Y., Higashijima, S., Harris, W.A.
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Journal Title
Neural Development 4
Pages: 14
Peer Reviewed
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[Journal Article] Mutation in the abdb gene causes abnormal iron and fatty acid metabolism in developing medaka fish.2008
Author(s)
Miyake, A., Higashijima, S., Kobayashi, D., Narita, T, Jindo, T., Setiamarga, D.H.E., Ohisa, S., Orihara, N, Hibiya, K., Konnno, S., Sakaguchi, S., Hoie, K., Imai, Y., Naruse, K., Kudo, A., Takeda, H.
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Journal Title
Development, Growth & Differentiation 50
Pages: 703-716
Peer Reviewed
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[Journal Article] Enzyme domain affects the movement of the voltage sensor in ascidian and zebrafish VSPs.2008
Author(s)
Hossain, Md. I., Iwasaki, H., Okouchi, Y., Chahine, M., Higashijima, S., Nagayama, K., Okamura, Y.
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Journal Title
J. Biol. Chem 283
Pages: 18248-59
Peer Reviewed
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