Extended Data Fig. 4. The p-Y705-Stat3 binding site (in red) in the nucleic acid sequence of GSDMC promoter and the expression level of GSDME in MDA-MB-231 cells.
(a) GSDMC promoter sequence was obtained from GeneCopoeia and analyzed using the GPMiner program (http://gpminer.mbc.nctu.edu.tw/). Two putative p-Y705-Stat3–binding sites in the GSDMC promoter were predicted. p-Y705-Stat3-binding site was validated by screening with luciferase reporter assay. (b-d) Immunoblotting of GSDME in MDA-MB-231 cells. H226 cells as a positive control. Immunoblotting of the endogenous GSDME (b). Immunoblotting of GSDME in MDA-MB-231 cells under hypoxia (c). Immunoblotting of GSDME in MDA-MB-231 cells treated with daunorubicin, doxorubicin, epirubicin, and actinomycin-D (d). The experiments of (b-d) were repeated three times with similar results respectively. Unprocessed blots are provided in Source Data Extended Data Fig. 4.