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- W2079165221 abstract "We examined whether Gbx2 is required after embryonic day 9 (E9) to repress Otx2 in the cerebellar anlage and position the midbrain/hindbrain organizer. In contrast to Gbx2 null mutants, mice lacking Gbx2 in rhombomere 1 (r1) after E9 (Gbx2-CKO) are viable and develop a cerebellum. A Gbx2-independent pathway can repress Otx2 in r1 after E9. Mid/hindbrain organizer gene expression, however, continues to be dependent on Gbx2. We found that Fgf8 expression normally correlates with the isthmus where cells undergo low proliferation and that in Gbx2-CKO mutants this domain is expanded. We propose that Fgf8 permits lateral cerebellar development through repression of Otx2 and also suppresses medial cerebellar growth in Gbx2-CKO embryos. Our work has uncovered distinct requirements for Gbx2 during cerebellum formation and provided a model for how a transcription factor can play multiple roles during development." @default.
- W2079165221 created "2016-06-24" @default.
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- W2079165221 date "2002-09-01" @default.
- W2079165221 modified "2023-10-14" @default.
- W2079165221 title "Changing Requirements for Gbx2 in Development of the Cerebellum and Maintenance of the Mid/Hindbrain Organizer" @default.
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- W2079165221 doi "https://doi.org/10.1016/s0896-6273(02)00935-2" @default.
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