Fig 1: Kaempferol modulated estrogen metabolism pathways and differentially regulates PPARG expression in EC cells of different ER subtypes. A–B HSD17B1 and HSD17B1-associated genes, such as ESRRA, PPARG, and ESR1, are involved in several estrogen metabolism pathways, such as steroid binding, 17- beta-hydroxysteroid dehydrogenase (NADP+) activity, steroid hormone biosynthesis, and regulation of hormone levels. C Kaempferol suppressed the expression of PPARG in ER-positive AN3 CA and promoted the expression of PPARG in ER-negative HEC-1-A. D–I Kaempferol suppressed the expression of PPARGC1A and ESRRA in both AN3 CA (D–F) and HEC-1-A cells (G–I), without modulating ESR1. Western blotting (D–E and G–H) and the IHC scores (F and I) confirmed the differential expression of PPARGC1A and ESRRA. Results are presented as means and SDs. Compared with the negative control, *, #P < 0.05, **, ##P < 0.01, ***, ###P < 0.001
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