(A) Colony formation assay quantification in 451Lu-R (left) and 1205Lu-R (right) melanoma cells treated with DMSO, 5 μM PLX4032 alone, 2.5 μM corin alone, or 2.5 μM corin plus 5 μM PLX4032 for 10 days (n = 3). (B) Quantification of TUNEL+ cells in 451Lu-R and 1205Lu-R melanoma cells following 72 hours of treatment with DMSO, 5 μM PLX4032 alone, 1 μM corin alone, or 1 μM corin plus 5 μM PLX4032 (n = 3). (C) Senescence-associated β-galactosidase staining of 451Lu-R melanoma cells treated with DMSO, 5 μM PLX4032 alone, 1 μM corin alone, or 1 μM corin plus 5 μM PLX4032 for 72 hours and quantification (n = 2–3). Scale bar: 50 μm. *P < 0.05, **P < 0.01, and ****P < 0.0001, by 1-way ANOVA with Tukey’s test.