EIF4G1 and mesothelioma: Finally, the level of eIF4G, the scaffolding component of the eIF4F complex necessary for the initiation of translation, was not affected by IGF-I stimulation and was mildly decreased upon LY294002 treatment in three of the five mesothelioma cell lines (H2052, H513, and H2596) and LP9 cells (Figure 1A).