Cited by 40Endometriosis Research and TreatmentEstrogen and related hormone effectsEndometrial and Cervical Cancer Treatments

The Essential Role of GATA6 in the Activation of Estrogen Synthesis in Endometriosis

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Bernardi, Lia. A., Dyson, Matthew T., Tokunaga, Hideki, Sison, Christia, Oral, Muge, Robins, Jared C., Bulun, Serdar E.·2019·Reproductive Sciences

Abstract

Endometriotic stromal cells synthesize estradiol via the steroidogenic pathway. Nuclear receptor subfamily 5, group A, member 1 (NR5A1) is critical, but alone not sufficient, in activating this cascade that involves at least 5 genes. To evaluate whether another transcription factor is required for the activation of this pathway, we examined whether GATA Binding Protein 6 (GATA6) can transform a normal endometrial stromal cell (NoEM) into an endometriotic-like cell by conferring an estrogen-producing phenotype. We ectopically expressed GATA6 alone or with NR5A1 in NoEM or silenced these transcription factors in endometriotic stromal cells (OSIS) and assessed the messenger RNAs or proteins encoded by the genes in the steroidogenic cascade. Functionally, we assessed the effects of GATA6 expression or silencing on estradiol formation. In OSIS, GATA6 was necessary for catalyzing the conversion of progesterone to androstenedione (CYP17A1; P < .05). In NoEM, ectopic expression of GATA6 was essential for converting pregnenolone to estrogen (HSD3B2, CYP17A1, and CYP19A1; P < .05). However, simultaneous ectopic expression of both GATA6 and NR5A1 was required and sufficient to confer induction of all 5 genes and their encoded proteins that convert cholesterol to estrogen. Functionally, only simultaneous knockdown of GATA6 and NR5A1 blocked estradiol formation in OSIS ( P < .05). The presence of both transcription factors was required and sufficient to transform endometrial stromal cells into endometriotic-like cells that produced estradiol in large quantities ( P < .05). In summary, GATA6 alone is essential but not sufficient for estrogen formation in endometriosis. However, simultaneous addition of GATA6 and NR5A1 to an endometrial stromal cell is sufficient to transform it into an endometriotic-like cell, manifested by the activation of the estradiol biosynthetic cascade.

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Authors
Bernardi, L. A., Dyson, M. T., Tokunaga, H., Sison, C., Oral, M., Robins, J. C., & Bulun, S. E.
Affiliations
Northwestern University (US)
Corresponding author
Bulun, Serdar E.
Venue
Reproductive Sciences
Published
2019-01
Volume
26
Issue
1
Pages
60-69
ISSN
  • 1933-7191 (ISSN-L)
  • 1933-7205
OpenAlex
W2789894649
Cited by
40
References
32
Citations by year
2026: 4 · 2025: 6 · 2024: 5 · 2023: 8 · 2022: 2 · 2021: 7 · 2020: 5 · 2019: 3
FWCI
3.85
Type
journal article
Language
en
Open access
Locations
  • Reproductive Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Friends of Prentice Women’s Health Research Award (R03-HD082558-02)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Endometriosis Research and Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Health Sciences › Medicine › Obstetrics and Gynecology › Endometrial and Cervical Cancer Treatments
Keywords
GATA6, endometriosis, estradiol synthesis, steroidogenesis, steroidogenic factor 1, endometrial stromal cells, CYP17A1, HSD3B2, CYP19A1, transcription factors
MeSH terms
Adult, Cells, Cultured, Endometriosis, Endometrium, Estradiol, Female, Humans, Stromal Cells, GATA6 Transcription Factor, Steroidogenic Factor 1

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