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- W4320733706 abstract "Abstract Complex signalling between the apical ectodermal ridge (AER - a thickening of the distal epithelium) and the mesoderm controls limb patterning along the proximo-distal axis (humerus to digits). However, the essential requirement for AER-Fgf signalling during in vivo development makes it difficult to understand the exact roles that it fulfils. To overcome this barrier, we developed an amenable ex vivo chick wing tissue explant system that faithfully replicates in vivo parameters. Using inhibition experiments and RNA-sequencing, we identify a transient role for Fgfs in triggering the distal patterning phase. Fgfs are then dispensable for the maintenance of an intrinsic mesodermal transcriptome, which controls proliferation/differentiation timing and the duration of patterning. We also uncover additional roles for Fgf signalling in maintaining AER-related gene expression and in suppressing myogenesis. We describe a simple logic for limb patterning duration, which is potentially applicable to other systems, including the main body axis." @default.
- W4320733706 created "2023-02-15" @default.
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- W4320733706 date "2023-02-13" @default.
- W4320733706 modified "2023-10-02" @default.
- W4320733706 title "Fgf signalling triggers an intrinsic mesodermal timer that determines the duration of limb patterning" @default.
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- W4320733706 doi "https://doi.org/10.1101/2023.02.13.528267" @default.
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