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| http://purl.uniprot.org/citations/19576202 | http://www.w3.org/2000/01/rdf-schema#comment | "Tbx2 is a T-box transcription factor gene that is dynamically expressed in the presumptive retina during optic vesicle invagination. Several findings implicate Tbx2 in cell cycle regulation, including its overexpression in tumours and regulation of proliferation during heart development. We investigated the role of Tbx2 in optic cup formation by analysing mice with a targeted homozygous mutation in Tbx2. Loss of Tbx2 caused a reduced presumptive retinal volume due to increased apoptosis, and a delay in ventral optic vesicle invagination leading to the formation of small and abnormally shaped optic cups. Tbx2 is essential for maintenance, but not induction of expression of the dorsal retinal determinant, Tbx5, and acts downstream of Bmp4, a dorsally expressed gene implicated in human microphthalmia. The small retina showed a hypocellular ventral region, loss of Fgf15, normally expressed in proliferating central retinal cells, and increased numbers of mitotic cells in the dorsal region, indicating that Tbx2 is required for normal growth and development across the D-V axis. Dorsal expression of potential regulators of retinal growth, Cyp1b1 and Cx43, and the topographic guidance molecule ephrinB2, was increased, and intraretinal axons were disorganised resulting in a failure of optic nerve formation. Our data provide evidence that Tbx2 is required for proper optic cup formation and plays a critical early role in regulating regional retinal growth and the acquisition of shape during optic vesicle invagination."xsd:string |
| http://purl.uniprot.org/citations/19576202 | http://purl.org/dc/terms/identifier | "doi:10.1016/j.ydbio.2009.06.026"xsd:string |
| http://purl.uniprot.org/citations/19576202 | http://purl.uniprot.org/core/author | "Sowden J.C."xsd:string |
| http://purl.uniprot.org/citations/19576202 | http://purl.uniprot.org/core/author | "Papaioannou V.E."xsd:string |
| http://purl.uniprot.org/citations/19576202 | http://purl.uniprot.org/core/author | "Behesti H."xsd:string |
| http://purl.uniprot.org/citations/19576202 | http://purl.uniprot.org/core/date | "2009"xsd:gYear |
| http://purl.uniprot.org/citations/19576202 | http://purl.uniprot.org/core/name | "Dev Biol"xsd:string |
| http://purl.uniprot.org/citations/19576202 | http://purl.uniprot.org/core/pages | "360-372"xsd:string |
| http://purl.uniprot.org/citations/19576202 | http://purl.uniprot.org/core/title | "Loss of Tbx2 delays optic vesicle invagination leading to small optic cups."xsd:string |
| http://purl.uniprot.org/citations/19576202 | http://purl.uniprot.org/core/volume | "333"xsd:string |
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