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- W2092195800 abstract "A concentration gradient of Shh is thought to pattern the ventral neural tube, and these ventral cell types are absent in shh−/− mice. Based on in vitro and genetic studies, the zinc finger-containing transcription factors Gli 1, 2, and 3 are mediators of the Shh intracellular response. The floorplate and adjacent cell types are absent in gli1−/−;gli2−/− mice, but part of the Shh−/− phenotype in the neural tube is alleviated in the Shh−/−;gli3−/− double mutant. This is consistent with the predicted role of Gli3 as a repressor of the Shh response. Gli3 repressor activity is blocked by Shh. In order to test the role of the repressor form of Gli3 in the neural tube, a truncated version of Gli3 (Gli3R*) was designed to mimic a Pallister Hall allele. Gli3R* acts as a constitutive repressor independent of Shh signaling. Misexpression of Gli3R* in the chick neural tube caused a ventral expansion of class-I, dorsal progenitor proteins and a loss of class-II, ventral progenitor proteins consistent with expected activity as a repressor of the Shh response. Activation of the BMP response is sufficient to maintain gli3 expression in neural plate explants, which might be a mechanism by which BMPs antagonize the Shh response." @default.
- W2092195800 created "2016-06-24" @default.
- W2092195800 creator A5033672356 @default.
- W2092195800 creator A5091538795 @default.
- W2092195800 date "2003-05-01" @default.
- W2092195800 modified "2023-10-15" @default.
- W2092195800 title "The amino-terminal region of Gli3 antagonizes the Shh response and acts in dorsoventral fate specification in the developing spinal cord" @default.
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- W2092195800 doi "https://doi.org/10.1016/s0012-1606(03)00065-4" @default.
- W2092195800 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/12729563" @default.
- W2092195800 hasPublicationYear "2003" @default.
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