Zichong granules promote differentiation of ovarian granulosa-like cells from human embryonic stem cells in vitro.
2021
Objective To investigate whether Zichong granules (, ZCKL), a very effective herbal formula for treating infertility, have an impact on the differentiation of ovarian granulosa cells from human embryonic stem cells (hESCs) in vitro, and to explore the cellular mechanisms of its clinical effects. Methods Serum from ZCKL-medicated rats was prepared and used to treat mesoderm cells derived from hESCs for 6 d. Normal rat serum and a set of growth factors were used as negative and positive controls, respectively. Results ZCKL-medicated rat serum, but not normal rat serum, induced hESCs-derived mesoderm cells to differentiate into functional ovarian granulosa-like cells (OGLCs) in a similar manner to defined growth factors. The induced OGLCs resembled the morphology of native human granulosa cells, expressed granulosa cell-specific markers at both the mRNA and protein levels, produced high levels of estradiol and strongly responded to follicle-stimulating hormone stimulation. Furthermore, mRNA levels of follistatin, mothers against decapentaplegic homolog 8 and bone morphogenetic protein 6 were dynamically changed during the process. Conclusion In the ZCKL treatment of infertility, one mechanism by which ZCKL may act is by influencing ovarian granulosa cell differentiation and development, possibly through the follistatin and BMP/SMAD signaling pathways.
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