KGN Cells

The KGN cell line is a human ovarian granulosa tumor cell line derived from a patient with ovarian cancer and immortalized for use in various research studies. It maintains the functional characteristics of granulosa cells, including hormone synthesis, making it a valuable model for examining granulosa cell functions, hormonal regulation, and ovarian pathology. KGN cells have been utilized to investigate the molecular mechanisms underlying reproductive and endocrine disorders such as polycystic ovary syndrome (PCOS). They are particularly noted for their response to polyunsaturated fatty acids like arachidonic acid (AA), which can induce oxidative stress (OS) and impact mitochondrial function.

Research has shown that exposure to AA in KGN cells elevates levels of oxidative markers such as reactive oxygen species (ROS) and malondialdehyde (MDA), reduces total antioxidant capacity, and impairs mitochondrial activity, leading to cell apoptosis. This process is associated with the upregulation of growth differentiation factor 15 (GDF15), which appears to serve a protective role against cellular damage induced by oxidative stress. Additionally, KGN cells are sensitive to ferroptosis, an iron-dependent form of cell death characterized by lipid peroxidation and oxidative stress. Studies highlight that iron uptake mediated through the transferrin receptor can promote ROS production and contribute to this pathway.

Furthermore, KGN cells have been used to study the impact of microRNAs on cell function, as miR-93-5p has been identified as a factor promoting apoptosis and ferroptosis through the NF-κB signaling pathway, linking miRNA regulation to granulosa cell dysfunction in PCOS. These capabilities make KGN cells a significant model for advancing understanding of ovarian pathophysiology and exploring potential therapeutic targets.