Treatment of LP9 cells and a panel of mesothelioma cell lines (e.g. H2373, MO, HP-1 and HM) with 10 μM MG-132 overnight did not extinguish FOXM1 expression (Fig. 3C, lanes 3–12), whereas MG-132 inhibited expression of FOXM1 in Met5A cells, a mesothelial cell line transformed by SV40 (Fig. 3C, lanes 1–2). Here, FOXM1 is linked to mesothelioma.