The potential role of Arhgef33 RhoGEF in foveal development in the zebra finch retina

Abstract The fovea is a pit formed in the center of the retina that enables high-acuity vision in certain vertebrate species. While formation of the fovea fascinates many researchers, the molecular mechanisms underlying foveal development are poorly understood. In the current study, we histologicall...

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Autores principales: Takefumi Sugiyama, Haruka Yamamoto, Tetsuo Kon, Taro Chaya, Yoshihiro Omori, Yutaka Suzuki, Kentaro Abe, Dai Watanabe, Takahisa Furukawa
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Publicado: Nature Portfolio 2020
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spelling oai:doaj.org-article:c2dc0014cf1b47188cc42860b4fdf6742021-12-02T16:18:06ZThe potential role of Arhgef33 RhoGEF in foveal development in the zebra finch retina10.1038/s41598-020-78452-62045-2322https://doaj.org/article/c2dc0014cf1b47188cc42860b4fdf6742020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78452-6https://doaj.org/toc/2045-2322Abstract The fovea is a pit formed in the center of the retina that enables high-acuity vision in certain vertebrate species. While formation of the fovea fascinates many researchers, the molecular mechanisms underlying foveal development are poorly understood. In the current study, we histologically investigated foveal development in zebra finch (Taeniopygia guttata) and found that foveal pit formation begins just before post-hatch day 14 (P14). We next performed RNA-seq analysis to compare gene expression profiles between the central (foveal and parafoveal) and peripheral retina in zebra finch at P14. We found that the Arhgef33 expression is enriched in the middle layer of the inner nuclear layer at the parafovea, suggesting that Arhgef33 is dominantly expressed in Müller glial cells in the developing parafovea. We then performed a pull-down assay using Rhotekin-RBD and observed GEF activity of Arhgef33 against RhoA. We found that overexpression of Arhgef33 in HEK293 cells induces cell contraction and that Arhgef33 expression inhibits neurite extension in Neuro 2A cells, which is partially recovered by a Rho-kinase (ROCK) inhibitor. Taken together, we used zebra finch as a model animal to investigate foveal development and identified Arhgef33 as a candidate protein possibly involved in foveal development through modulating RhoA activity.Takefumi SugiyamaHaruka YamamotoTetsuo KonTaro ChayaYoshihiro OmoriYutaka SuzukiKentaro AbeDai WatanabeTakahisa FurukawaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-11 (2020)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Takefumi Sugiyama
Haruka Yamamoto
Tetsuo Kon
Taro Chaya
Yoshihiro Omori
Yutaka Suzuki
Kentaro Abe
Dai Watanabe
Takahisa Furukawa
The potential role of Arhgef33 RhoGEF in foveal development in the zebra finch retina
description Abstract The fovea is a pit formed in the center of the retina that enables high-acuity vision in certain vertebrate species. While formation of the fovea fascinates many researchers, the molecular mechanisms underlying foveal development are poorly understood. In the current study, we histologically investigated foveal development in zebra finch (Taeniopygia guttata) and found that foveal pit formation begins just before post-hatch day 14 (P14). We next performed RNA-seq analysis to compare gene expression profiles between the central (foveal and parafoveal) and peripheral retina in zebra finch at P14. We found that the Arhgef33 expression is enriched in the middle layer of the inner nuclear layer at the parafovea, suggesting that Arhgef33 is dominantly expressed in Müller glial cells in the developing parafovea. We then performed a pull-down assay using Rhotekin-RBD and observed GEF activity of Arhgef33 against RhoA. We found that overexpression of Arhgef33 in HEK293 cells induces cell contraction and that Arhgef33 expression inhibits neurite extension in Neuro 2A cells, which is partially recovered by a Rho-kinase (ROCK) inhibitor. Taken together, we used zebra finch as a model animal to investigate foveal development and identified Arhgef33 as a candidate protein possibly involved in foveal development through modulating RhoA activity.
format article
author Takefumi Sugiyama
Haruka Yamamoto
Tetsuo Kon
Taro Chaya
Yoshihiro Omori
Yutaka Suzuki
Kentaro Abe
Dai Watanabe
Takahisa Furukawa
author_facet Takefumi Sugiyama
Haruka Yamamoto
Tetsuo Kon
Taro Chaya
Yoshihiro Omori
Yutaka Suzuki
Kentaro Abe
Dai Watanabe
Takahisa Furukawa
author_sort Takefumi Sugiyama
title The potential role of Arhgef33 RhoGEF in foveal development in the zebra finch retina
title_short The potential role of Arhgef33 RhoGEF in foveal development in the zebra finch retina
title_full The potential role of Arhgef33 RhoGEF in foveal development in the zebra finch retina
title_fullStr The potential role of Arhgef33 RhoGEF in foveal development in the zebra finch retina
title_full_unstemmed The potential role of Arhgef33 RhoGEF in foveal development in the zebra finch retina
title_sort potential role of arhgef33 rhogef in foveal development in the zebra finch retina
publisher Nature Portfolio
publishDate 2020
url https://doaj.org/article/c2dc0014cf1b47188cc42860b4fdf674
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