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Title: Developmental regulation of notochord-derived repulsion for dorsal root ganglion axons
Authors: Masuda, Tomoyuki
Fukamauchi, Fumihiko
Takeda, Yasuo
Fujisawa, Hajime
Watanabe, Kazutada
Okado, Nobuo
Shiga, Takashi
Affiliation: 解剖学第一講座
Source title: Molecular and cellular neurosciences
Volume: 25
Issue: 2
Start page: 217
End page: 227
Issue Date: Feb-2004
Abstract: During the initial stages of development, the notochord provides repulsive signals for dorsal root ganglion (DRG) axons via semaphorin 3A/neuropilin-1, axonin-1/SC2, and other unknown repulsive molecules. The notochord is known to produce aggrecan, one of the chondroitin sulfate proteoglycans (CSPGs). We report here that adding aggrecan to the culture medium cannot only induce DRG growth cone collapse, but also inhibit DRG axonal growth. Using cocultures composed of tissues derived from chick embryos or neuropilin-1-deficient mice treated with chondroitinase ABC, we show the direct evidence that CSPGs are involved in notochord-derived repulsion for DRG axons. At later developmental stages, CSPGs are involved in perinotochordal sheath-derived axon repulsion, but not in notochord core-derived repulsion. We further demonstrate that TAG-1/axonin-1/SC2 is not involved in mediating repulsive activities by CSPGs, but is required for notochord core-derived axon repulsion. Thus, notochord-derived multiple axon repulsions act in a spatiotemporal-specific manner to shape the initial trajectories of DRG axons.
Publisher: Elsevier
language: eng
URI: http://ir.fmu.ac.jp/dspace/handle/123456789/759
Full text URL: http://ir.fmu.ac.jp/dspace/bitstream/123456789/759/1/MolCellNeurosci_25_p217.pdf
ISSN: 1044-7431
DOI: 10.1016/j.mcn.2003.10.005
PubMed ID: 15019939
Other version: https://doi.org/10.1016/j.mcn.2003.10.005
Rights: © 2003. This accepted manuscript version is made available under the CC-BY-NC-ND 4.0 license. http://creativecommons.org/licenses/by-nc-nd/4.0/
Rights: http://creativecommons.org/licenses/by-nc-nd/4.0/
Appears in Collections:a10 学術雑誌論文等 = Journal Article

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MolCellNeurosci_25_p217.pdf9.95 MBAdobe PDFDownload

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