Synergistic effects of Chl- and Chd-MOs in inducing ventralization does not involve p53-mediated off-target effects. (A) A comparison is shown of 24-hpf embryos treated with 0.38 mM StCon-MO, 0.1 mM Chl 5′1-MO, 0.026 mM Chd-MO plus 0.25 mM p53-MO, 0.1 mM Chl 5′1-MO plus 0.026 mM Chd-MO, or with 0.1 mM Chl 5′1 plus 0.026 mM Chd-MO and 0.25 mM p53-MO. (B) Quantification of phenotypes at 24 hpf. Severity of dorsalization (D) is numerically classified as per Mullins et al., 1996. Degree of ventralization (VE) was not numerically classified. (C–D) Whole-mount in situ hybridization is shown for expression of the dorsal marker Chl at 30% epiboly for embryos treated with 0.38 mM StCon-MO (C), 0.1 mM Chl 5′1-MO plus 0.25 mM p53-MO (D), 0.026 mM Chd-MO plus 0.25 mM p53-MO (E), or 0.1 mM Chl 5′1 plus 0.026 mM Chd-MO and 0.25 mM p53-MO.
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