LATS kinase activity was monitored by LATS-BS consisting of two vectors: NLuc-YAP15 (#107610, Addgene) and 14-3-3-CLuc (#107611, Addgene)15 (link). Lenvatinib-resistant PLC/PRF/5 and Huh7 were transfected with LATS-BS and pRL-CMV Renilla luciferase (Promega) for normalization of transfection efficiency using Lipofectamine 2000. Treatment of 10 µM U0126 or solvent control (DMSO) for 4 hours was done at 48 hour post transfection. The cells were collected and luciferase signal was measured using Dual-luciferase report assay system (#E1910, Promega). Luciferase fold change was calculated according to the method described15 (link).
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