In vitro study | BAY 61-3606 (0.01-10 μM ; 48 hours) significantly reduces the cell viability of SYK-positive SH-SY5Y and SYK-negative SK-N-BE cells in a dose-dependent matter. SH-SY5Y cells expressing high SYK levels are significantly more sensitive to BAY 61-3606 in comparison to SK-N-BEcells expressing very low or no SYK. BAY 61-3606 (0.4 and 0.8 μM; 4 or 24 hours) inhibits SYK activity by reducing ERK1/2 and Akt phosphorylation in neuroblastoma cell SH-SY5Y. BAY 61-3606 (2 μM; 2 hours) induces a large decrease of Syk phosphorylation in K-rn cell lysates. Cell Viability Assay Cell Line: SYK-positive SH-SY5Y and SYK-negative SK-N-BE cells Concentration: 0.01, 0.1, 1, and 10 μM Incubation Time: 48 hours Result: Significantly reduced the cell viability of both cell lines in a dose-dependent matter. Western Blot Analysis Cell Line: SH-SY5Y cells Concentration: 0.4 and 0.8 μM Incubation Time: 4 or 24 hours Result: Reduced the phosphorylation of ERK1/2 and Akt after a 4 or 24 h treatment. Western Blot Analysis Cell Line: K-rn cell lysates Concentration: 2 μM Incubation Time: 2 hours Result: Induced a large decrease of Syk phosphorylation. |