Zebrafish embryos at the one-cell stage were injected with Morpholinos (MOs). The sequence of the Morpholinos targeting the exon 4-intron 4 (MO1) and the exon 5-intron 5 (MO2) of D. rerio lat3a (please see “Bioinformatic and statistical analysis” for accession numbers) were as follows: lat3a MO1: 5′-ATAGATCATGTACTCACCTTCTGGT-3′; lat3a MO2: 5′-CATTTTCTGCTGCTCCTTACCGTTA-3′. The MO targeting zebrafish lat1 (NM_001128358) at the exon 1-intron 1 boundary was 5′-AGGTAACAGTTTACTTACGTATACA-3′.
Zebrafish embryos at 19 hpf (20 somites) were chemically dechorionated with pronase (Roche, Basel, Switzerland) and treated with DMSO (vehicle), 50 μM rapamycin, 1 μM torin 1, or 10 μM 4EGI-1 and o-dianisidine stained at 72 hpf (96 (link)).