RPMI culture medium was purchased from Corning (Corning, NY). Fetal bovine serum (FBS) was purchased from Sigma Chemical Co. (St. Louis, MO). Trypsin, pen/strep antibiotics, and puromycin were purchased from Gibco (Grand Island, NY). Trametinib (MEK inhibitor) was purchased from Selleckchem (Houston, TX). Antibodies for Western Blot: Anti-HDAC1 (#2062, from Cell Signaling Technology (Danvers, MA), anti-HDAC2 (#2540 CST), The anti-HDAC3 and anti-HDAC8 antibodies were described in refs. 17 (link), HDAC11(#58442, CST). Anti-HDAC6 (#H-300, sc-11420) was purchased from Santa Cruz Biotechnologies. Cleaved PARP (Asp214) (#D64E10) (#5625 CST), phospho LKB1 (#3482, CST), total LKB1 (#3050, CST). Anti-YAP1 antibody (#H00010413-M01, Abnova). Anti-Vinculin (#G8796) and anti-GAPDH (#V9131) were purchased from Millipore Sigma (Bedford, MA).