Granulosa cells play an important role in follicle development, maturation, and atresia. They are a cellular source of the two most important ovarian steroids, namely, estradiol and progesterone and are also crucial for bidirectional communication with the oocyte, thus being involved in the regulation of its growth, development and function. Growing body of evidence suggests that granulosa cells cultured in vitro display stemness and transdifferentiation potential. Together with the fact that they can be easily collected during IVF procedures, these properties of GCs may be of particular interest for both regenerative medicine and transplantology. Establishment of in vitro cell culture and its thorough characterization, including molecular, is crucial for future potential utilization of human granulosa cells in design of engineered tissue grafts or cell-based therapies, in particular targeted at female infertility. Nevertheless, the transcriptomic alterations which may occur during in vitro culture of granulosa cells are still largely uncharacterized. The aim of this study was to examine expression changes of three genes encoding histone demethylases which serve as transcription coactivators in short term in vitro cell culture of human granulosa cells. The study groups consisted of 14 patients, aged 18–40 years undergoing in vitro fertilization (IVF). Expression level assessment was performed after 24 h, 48 h, 72 h, 96 h, 120 h, 144 h and 168 h of in vitro primary cell culture utilizing RT-qPCR technique. Upregulation of PHF2 expression in all time points of the culture was observed, whereas the tendency of JHDM1D and PHF8 was mainly to decrease in expression level. Further study on a larger population would be required in order to confirm the presented tendencies.
Running title: Expression pattern of selected histone demethylases in human granulosa cells
