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  The repulsive guidance molecule RGMa is involved in the formation of afferent connections in the dentate gyrus.

Brinks, H., Conrad, S., Vogt, J., Oldekamp, J., Sierra, A., Deitinghoff, L., Bechmann, I., Alvarez-Bolado, G., Heimrich, B., Monnier, P. P., Mueller, B. K., & Skutella, T. (2004). The repulsive guidance molecule RGMa is involved in the formation of afferent connections in the dentate gyrus. The Journal of Neuroscience, 24(15), 3862-3869. Retrieved from http://www.jneurosci.org/cgi/reprint/24/15/3862.

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資料種別: 学術論文

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 作成者:
Brinks, H., 著者
Conrad, S., 著者
Vogt, J., 著者
Oldekamp, J., 著者
Sierra, A., 著者
Deitinghoff, L., 著者
Bechmann, I., 著者
Alvarez-Bolado, G.1, 著者
Heimrich, B., 著者
Monnier, P. P., 著者
Mueller, B. K., 著者
Skutella, T., 著者
所属:
1Max Planck Society, ou_persistent13              

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キーワード: axon; dentate; development; guidance; hippocampus; neuron
 要旨: In the developing dentate gyrus, afferent fiber projections terminate in distinct laminas. This relies on an accurately regulated spatiotemporal network of guidance molecules. Here, we have analyzed the functional role of the glycosylphosphatidylinositol (GPI)-anchored repulsive guidance molecule RGMa. In situ hybridization in embryonic and postnatal brain showed expression of RGMa in the cornu ammonis and hilus of the hippocampus. In the dentate gyrus, RGM immunostaining was confined to the inner molecular layer, whereas the outer molecular layers targeted by entorhinal fibers remained free. To test the repulsive capacity of RGMa, different setups were used: the stripe and explant outgrowth assays with recombinant RGMa, and entorhino-hippocampal cocultures incubated either with a neutralizing RGMa antibody (Ab) or with the GPI anchor-digesting drug phosphatidylinositol-specific phospholipase C. Entorhinal axons were clearly repelled by RGMa in the stripe and outgrowth assays. After disrupting the RGMa function, the specific laminar termination pattern in entorhino-hippocampal cocultures was lost, and entorhinal axons entered inappropriate hippocampal areas. Our data indicate an important role of RGMa for the layer-specific termination of the perforant pathway as a repulsive signal that compels entorhinal fibers to stay in their correct target zone.

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言語: eng - English
 日付: 2004-04-14
 出版の状態: 出版
 ページ: -
 出版情報: -
 目次: -
 査読: -
 識別子(DOI, ISBNなど): eDoc: 426864
URI: http://www.jneurosci.org/cgi/reprint/24/15/3862
 学位: -

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出版物 1

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出版物名: The Journal of Neuroscience
種別: 学術雑誌
 著者・編者:
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出版社, 出版地: -
ページ: - 巻号: 24 (15) 通巻号: - 開始・終了ページ: 3862 - 3869 識別子(ISBN, ISSN, DOIなど): -