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pax6xenopus   

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Experiment details for pax6

Dichmann DS et al. (2008) Assay

Expression cloning in Xenopus identifies RNA-binding proteins as regulators of embryogenesis and Rbmx as necessary for neural and muscle development.

Gene Clone Species Stages Anatomy
pax6.L laevis NF stage 17 spinal cord , pre-chordal neural plate , chordal neural plate , eye primordium , anterior neural fold

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  Figure 4. Rbmx is necessary for normal neural development independent of neural induction and mesoderm formation. Embryos are either uninjected controls, injected with Rbmx MO in one cell at the one-cell stage (B,D,F,H,J,L) or one side at the two-cell stage Injected (N,M,P; injected side to the right). Embryos were analyzed at stage 14 (A-L) or 17 (M-R). A,B: N-tubulin-positive primary neurons do not form in Rbmx MO-injected embryos. C,D: Sox2 expression shows normal morphology of the neural plate. E-H: Early mesoderm formation is normal as judged by MyoD (E,F) and Xbra (G,H) expression. I,J: Otx5 expression in the anterior neural plate is not excluded from the presumptive forebrain. K,L: Noggin expression is absent in the anterior neural ridge (red arrow) indicating perturbed anterior neural development. M,N: Pax2-expressing interneurons in the spinal neural plate fail to form on the injected side. O,P: Reduced Slug expression on the injected side indicate defect in neural crest formation. Q,R: Mediolateral patterning of the spinal neural plate proper is normal judged by Pax6 expression.

Gene Clone Species Stages Anatomy
pax6.L laevis NF stage 31 retina , forebrain , diencephalon , midbrain , hindbrain , [+]

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  Figure 5. Rbmx is required for normal eye development and neuronal differentiation. A-H: Embryos injected unilaterally with Rbmx MO and cultured to stage 31 (A-D), stage 28 (E-F), or stage 35 (H). A,B: In situ hybridization for Xrx1. C,D: In situ hybridization for Pax6; red lines indicate Pax6 expression domain in normal forebrain (C), which is absent in the Rbmx MO injected side (D). E-H: Dorsal view of head and anterior trunk of Rbmx morphants. Injected side is to the right. E-H: In situ hybridization using antisense probe for En1 (E), Lbx1 (F), Lim1 (G), and Slug (H). Red arrowhead in F indicates Lbx1 expression in hypaxial muscle on the uninjected side. Yellow line in H indicates the midline and red arrow indicates melanocytes on the uninjected side. Notably Slug expression is absent in the neural tube and trunk on the injected side.