HNRNPH2 and melanoma: Even though the hnRNP H2 level was significantly higher in HEK293 cells compared with WM266–4 melanoma cells (Fig. 11B and C, compare controls), 2155–14 could not protect it from proteolysis suggesting that selectivity of 2155–14 might not be due to hnRNP H2 abundance but structural differences of the protein in the respective cell lines.