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. 2020 Dec 10;21(24):9412. doi: 10.3390/ijms21249412

Figure 6.

Figure 6

Inhibition of the IL-24/STAT3 axis during AHR activation enhances the upregulation of FLG and LOR expression in keratinocytes. (1) Tapinarof upregulates FLG and LOR expression in an AHR-dependent manner. (2) Tapinarof produces IL-24, an activator of the JAK/STAT3 axis that negatively regulates FLG and LOR expression, via AHR activation. (3) Blockade of the IL-24-STAT3 axis during AHR activation using JAK inhibitor supports the upregulation of FLG and LOR expression induced by tapinarof treatment.