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- W2169086940 abstract "Dorso-ventral and proximo-distal axis formation of the optic cup is apparent from early stages of development. Pax6 is initially detectable in the optic vesicle and later shows a distal-high and proximal-low gradient of expression in the retina. To determine the early role of Pax6 in pattern formation of the optic cup, we expressed Pax6 ectopically in the optic vesicle of stages 9-10 chick embryos by in ovo electroporation, which resulted in a small eye-like phenotype. The signaling molecule fibroblast growth factor (FGF)8, which appears to be restricted to the central retina, was increased, whereas bone morphogenetic protein (BMP)4 and Tbx5, two dorsal markers, were down-regulated in Pax6-electroporated eye. Pax6 overexpression also decreased the expression of the ventral marker Vax. Electroporation with a dominant-negative form of Pax6 resulted in a decrease in FGF8 expression, but BMP4 expression was unaffected initially while it was diminished later. Our data suggest a new role for Pax6 in regulating FGF8 and BMP4 expression during pattern formation of the optic cup, and that a Pax6-regulated balance between FGF8 and BMP4 is critical for retinogenesis." @default.
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- W2169086940 date "2007-10-01" @default.
- W2169086940 modified "2023-10-16" @default.
- W2169086940 title "Stage-dependent expression of Pax6 in optic vesicle/cup regulates patterning genes through signaling molecules" @default.
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- W2169086940 doi "https://doi.org/10.1111/j.1432-0436.2007.00168.x" @default.
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