To confirm the specificity of our compounds for GLI transcription factors, the effects of SST0683 and SST0790 on melanoma cell viability in GLI1- or GLI2-silenced A375 cells were also tested. This assay showed that depletion of GLI1 or GLI2 greatly attenuated the effects of our putative GLI inhibitors on cell viability, suggesting the specificity of our compounds for GLI1 and GLI2 (Figure 8). Finally, to exclude nonspecific cytotoxic effects, we demonstrated that the four selected compounds had no effect on cell viability in a non-neoplastic mammary epithelial cell line (MCF10A, Supporting Information Figure 1B), which expresses very low levels of GLI1 and of other HH pathway components and does not respond to HH pathway inhibition
To confirm the specificity of our compounds for GLI transcription factors, the effects of SST0683 and SST0790 on melanoma cell viability in GLI1- or GLI2-silenced A375 cells were also tested. This assay showed that depletion of GLI1 or GLI2 greatly attenuated the effects of our putative GLI inhibitors on cell viability, suggesting the specificity of our compounds for GLI1 and GLI2 (Figure 8). Finally, to exclude nonspecific cytotoxic effects, we demonstrated that the four selected compounds had no effect on cell viability in a non-neoplastic mammary epithelial cell line (MCF10A, Supporting Information Figure 1B), which expresses very low levels of GLI1 and of other HH pathway components and does not respond to HH pathway inhibition<br>
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