Drosophila big brain does not act as a water channel, but mediates cell adhesion

Kimiko Tatsumi; Shoji Tsuji; Hideki Miwa; Toshinori Morisaku; Mutsuo Nuriya; Minako Orihara; Kazunari Kaneko; Hideyuki Okano; Masato Yasui

doi:10.1016/j.febslet.2009.05.035

Drosophila big brain does not act as a water channel, but mediates cell adhesion

Kimiko Tatsumi, Shoji Tsuji, Hideki Miwa, Toshinori Morisaku, Mutsuo Nuriya, Minako Orihara, Kazunari Kaneko, Hideyuki Okano, Masato Yasui

研究成果: Article › 査読

28 被引用数 (Scopus)

抄録

The neurogenic gene Drosophila big brain (bib) has a high sequence homology to aquaporin-4. However, its cellular functions in Drosophila neurogenesis have remained elusive. Here we investigated cell adhesion, and the ion and water permeability of Bib. The adhesive function was examined by a cell aggregation assay using L cells. Bib-transfected L cells formed aggregated clusters, while control-L cells remained as a single cell suspension. Ion permeation was not confirmed in L cells stably expressing Bib. When expressed in COS7 cells, Bib exhibited limited water permeability. This newly found cell adhesive function of Bib may be important for Drosophila neurogenesis.

本文言語	English
ページ（範囲）	2077-2082
ページ数	6
ジャーナル	FEBS Letters
巻	583
号	12
DOI	https://doi.org/10.1016/j.febslet.2009.05.035
出版ステータス	Published - 2009 6月 18

ASJC Scopus subject areas

生物理学
構造生物学
生化学
分子生物学
遺伝学
細胞生物学

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10.1016/j.febslet.2009.05.035

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title = "Drosophila big brain does not act as a water channel, but mediates cell adhesion",

abstract = "The neurogenic gene Drosophila big brain (bib) has a high sequence homology to aquaporin-4. However, its cellular functions in Drosophila neurogenesis have remained elusive. Here we investigated cell adhesion, and the ion and water permeability of Bib. The adhesive function was examined by a cell aggregation assay using L cells. Bib-transfected L cells formed aggregated clusters, while control-L cells remained as a single cell suspension. Ion permeation was not confirmed in L cells stably expressing Bib. When expressed in COS7 cells, Bib exhibited limited water permeability. This newly found cell adhesive function of Bib may be important for Drosophila neurogenesis.",

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author = "Kimiko Tatsumi and Shoji Tsuji and Hideki Miwa and Toshinori Morisaku and Mutsuo Nuriya and Minako Orihara and Kazunari Kaneko and Hideyuki Okano and Masato Yasui",

note = "Funding Information: We thank Akihiro Hazama for fruitful discussion. This work was supported by Specially Promoted Research from MEXT (Ministry of Education, Culture, Sports, Science and Technology) of Japan, in part by a Grant for Child Health and Development from the Ministry of Health, Labor and Welfare of Japan.",

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AU - Tatsumi, Kimiko

AU - Tsuji, Shoji

AU - Miwa, Hideki

AU - Morisaku, Toshinori

AU - Nuriya, Mutsuo

AU - Orihara, Minako

AU - Kaneko, Kazunari

AU - Okano, Hideyuki

AU - Yasui, Masato

N1 - Funding Information: We thank Akihiro Hazama for fruitful discussion. This work was supported by Specially Promoted Research from MEXT (Ministry of Education, Culture, Sports, Science and Technology) of Japan, in part by a Grant for Child Health and Development from the Ministry of Health, Labor and Welfare of Japan.

PY - 2009/6/18

Y1 - 2009/6/18

N2 - The neurogenic gene Drosophila big brain (bib) has a high sequence homology to aquaporin-4. However, its cellular functions in Drosophila neurogenesis have remained elusive. Here we investigated cell adhesion, and the ion and water permeability of Bib. The adhesive function was examined by a cell aggregation assay using L cells. Bib-transfected L cells formed aggregated clusters, while control-L cells remained as a single cell suspension. Ion permeation was not confirmed in L cells stably expressing Bib. When expressed in COS7 cells, Bib exhibited limited water permeability. This newly found cell adhesive function of Bib may be important for Drosophila neurogenesis.

AB - The neurogenic gene Drosophila big brain (bib) has a high sequence homology to aquaporin-4. However, its cellular functions in Drosophila neurogenesis have remained elusive. Here we investigated cell adhesion, and the ion and water permeability of Bib. The adhesive function was examined by a cell aggregation assay using L cells. Bib-transfected L cells formed aggregated clusters, while control-L cells remained as a single cell suspension. Ion permeation was not confirmed in L cells stably expressing Bib. When expressed in COS7 cells, Bib exhibited limited water permeability. This newly found cell adhesive function of Bib may be important for Drosophila neurogenesis.

KW - Aquaporin-4 (AQP4)

KW - Big brain

KW - Cell adhesion

KW - Drosophila

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JO - FEBS Letters

JF - FEBS Letters

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Drosophila big brain does not act as a water channel, but mediates cell adhesion

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