FIGURE

Fig. 5

ID

ZDB-FIG-050923-5

Publication

Fong et al., 2005 - Wnt signalling mediated by Tbx2b regulates cell migration during formation of the neural plate

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Fig. 5

(A-D) Tbx2b is regulated by Fz7. (A) TOP-flash assay shows a reduction of ß-catenin-dependent Tcf activity in fz7 morphants. (B) Expression of fz7 at 5.3 hpf (cross-section). (C) Expression of a dn-fz7-EGFP/BAC (red, see Materials and methods) caused the loss of tbx2b expression (blue) in the eye (arrow). (D) The absence of fz7 MO/fluorescein-injected cells in the eyes and CNS at 24 hpf is rescued by co-injection of tbx2b mRNA. (E) Real-time PCR analysis of Tbx2b and Fz7 morphants showed a decrease in tbx2b and fz7 transcripts in the presence of fz7 MO, but no effect from tbx2b MO at 5 hpf. n=15 for control, n=7 for tbx2b MO and n=4 for fz7 MO. (F-I) Rescue of cell movement defect by transplantation into wild-type host at shield stage. Wild-type donor cells differentiated into morphologically distinct cells in the eye (F) and hindbrain (G) by 24 hpf. By contrast, only a few Tbx2b-deficient cells differentiated into distinct eye (H) and hindbrain (I) cells (arrowheads).

Expression Data

Genes:	eef1a1l1 fzd7a tbx2b
Fish:	WT WT + MO1-fzd7a WT + MO3-tbx2b
Knockdown Reagents:	MO1-fzd7a MO3-tbx2b
Anatomical Term:	unspecified
Stage:	50%-epiboly

Expression Detail

Antibody Labeling

Phenotype Data

Phenotype Detail

Acknowledgments

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