ArticleJournal of ovarian research2022
Luteinizing hormone stimulates the expression of amphiregulin in human theca cells.
Article in Journal of ovarian research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 6 citations in OpenAlex.
- Mechanistic insight into nanomedicine for polycystic ovary syndrome.Molecular biology reports · 2025Review
- A Systematic Review and Integrated Bioinformatic Analysis on the Gene Expression of Cumulus-Oocyte Complex Following In Vitro Maturation.The Malaysian journal of medical sciences : MJMS · 2025Review
- Impact of Amphiregulin on Oocyte Maturation and Embryo Quality: Insights from Clinical and Molecular Perspectives.Geburtshilfe und Frauenheilkunde · 2025Article
- Aquaporin 2 is differentially expressed in granulosa cells of various stages of human follicles and is regulated by luteinizing hormone.Frontiers in cell and developmental biology · 2025Article
- Signaling pathways and targeted therapeutic strategies for polycystic ovary syndrome.Frontiers in endocrinology · 2023Review
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundLuteinizing hormone (LH) can stimulate mural granulosa cells to produce Amphiregulin (AREG), which can induce the resumption of meiosis in oocytes. Theca cells are present in the outer layer of follicles, providing communication with the pituitary axis through the established vascular system around the follicle. As LH target cells, it is unknown whether theca cells can produce AREG after LH stimulation.
methodsPrimary cultured human theca cells were treated with LH (with or without the inhibitor of PKA, H89), or agonists of adenylate cyclase (forskolin or db-cAMP). The mRNA and protein levels of AREG were evaluated by RT-qPCR, immunochemistry, immunofluorescence, western blotting, and ELISA.
resultsImmunohistochemistry of normal ovarian tissue obtained in the early-mid follicle phase showed that AREG expression was absent in both the theca layer and the granulosa cell layer of antral follicles. Double immunofluorescent staining revealed colocalization of AREG and CYP17A1 in human theca cells and colocalization of FSHR and AREG in human granulosa cells isolated from follicular fluid collected during IVF/ICSI after hCG trigger. LH significantly increased the mRNA and protein levels of AREG in human theca cells and the concentration of AREG in the culture medium. Forskolin and db-cAMP, activators of the cAMP/PKA signalling pathway, also significantly increased the mRNA and protein levels of AREG in human theca cells and the concentration of AREG in the culture medium. H89 antagonized the stimulating effect of LH on AREG expression in human theca cells. In addition, the concentration of AREG was lower in polycystic ovarian syndrome (PCOS) follicular fluid than in normal follicular fluid. The mRNA levels of AREG were significantly lower in PCOS granulosa cells and theca cells than in normal granulosa cells and theca cells.
conclusionLH can stimulate the expression of AREG in human theca cells, and the adenylate cyclase/cAMP/PKA cascade may mediate this process. Expression of AREG is decreased in PCOS theca cells compared to normal theca cells, with or without LH stimulation.
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