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. 2021 Sep 10;11:697967. doi: 10.3389/fonc.2021.697967

Figure 3.

Figure 3

The cytotoxic effect of cetuximab plus MK2206 with a total treatment duration of 72h. Dose-response curves for the cetuximab sensitive HNSCC cell lines SC263-S (A) and SCC22b-S (B) show a synergistic effect. Regarding the acquired cetuximab resistant variants, dose-response curves indicate a synergistic and additive effect in SC263-R (C) and SCC22b-R (D), respectively. Survival curves were corrected for the cytotoxic effect of cetuximab alone. Cells were treated with fixed concentrations of cetuximab, which were chosen based on the outcome of previous monotherapy experiments. Suffix -S: cetuximab sensitive cell line and suffix -R: acquired cetuximab resistant cell line.