Cited by 307Endometriosis Research and TreatmentEstrogen and related hormone effectsEndometrial and Cervical Cancer Treatments

Role of Estrogen Receptor-β in Endometriosis

Open access
Bulun, Serdar, Monsavais, Diana, Pavone, Mary, Dyson, Matthew, Xue, Qing, Attar, Erkut, Tokunaga, Hideki, Su, Emily·2012·Seminars in Reproductive Medicine

Abstract

Endometriosis is an estrogen-dependent disease. The biologically active estrogen, estradiol, aggravates the pathological processes (e.g., inflammation and growth) and the symptoms (e.g., pain) associated with endometriosis. Abundant quantities of estradiol are available for endometriotic tissue via several mechanisms including local aromatase expression. The question remains, then, what mediates estradiol action. Because estrogen receptor (ER)β levels in endometriosis are >100 times higher than those in endometrial tissue, this review focuses on this nuclear receptor. Deficient methylation of the ERβ promoter results in pathological overexpression of ERβ in endometriotic stromal cells. High levels of ERβ suppress ERα expression. A severely high ERβ-to-ERα ratio in endometriotic stromal cells is associated with suppressed progesterone receptor and increased cyclo-oxygenase-2 levels contributing to progesterone resistance and inflammation. ERβ-selective estradiol antagonists may serve as novel therapeutics of endometriosis in the future.

Integrity signals

Registry

Crossref · 10.1055/s-0031-1299596

Cites

62 of 62 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

0 of 18 cited sources checked · 0 supported · 0 flagged

  • Findingown data

    A CpG island occupies the promoter region of the ERβ gene.

    “We identified a CpG island occupying the promoter region of the ERβ gene (Fig. 3).”
    Quote in the paperSubstantial claim
  • Findingnone given

    ERβ expression may be more than 100 times higher in endometriotic tissue than in endometrium.

    “Among these nuclear receptors, ERβ expression is maybe >100 times higher in endometriotic tissue than in endometrium.”
    Quote in the paperNot a substantial claim
  • Findingown data

    Insufficient methylation of the ERβ promoter causes pathological overexpression of ERβ in endometriotic stromal cells.

    “Deficient methylation of the ERβ promoter results in pathological overexpression of ERβ in endometriotic stromal cells.”
    • Also stated in: § Epigenetic Regulation of the ERβ Promoter is Responsible for Its High Levels in Endometriosis · boosted
      “Thus high ERβ mRNA and protein expression in endometriotic cells were mediated by an epigenetic defect involving hypomethylation of a CpG island occupying its promoter (Fig. 3).”
    Quote in the paperSubstantial claim
  • Findingnone given

    ERα mRNA and protein levels are several fold lower in endometriotic tissue and stromal cells than in endometrial tissue and stromal cells.

    “ERα mRNA and protein levels are several fold lower in endometriotic tissue and stromal cells compared with endometrial tissue and stromal cells.”
    Quote in the paperSubstantial claim
  • Findingown data

    In vitro methylation strongly inactivates ERβ promoter activity.

    “The activity of the ERβ promoter was strongly inactivated by in vitro methylation.”
    Quote in the paperSubstantial claim
  • May combine two claims. 9
  • Classified as probably not a substantial claim. 2
  • The quote only partly states this claim. 1
  • May combine two claims.

    Findingcitation

    ERβ mRNA is about 34-fold higher in endometriotic stromal cells and is much lower or nearly absent in endometrial stromal cells.

    “ERβ mRNA was strikingly higher (~34-fold) in endometriotic stromal cells, whereas it was much lower or nearly absent in endometrial stromal cells.38”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [38]

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Findingcitation

    The average ERα-to-ERβ mRNA ratio is 841 in endometrial stromal cells and 21 in endometriotic stromal cells.

    “The ratios of ERα to ERβ mRNA levels were, on average, 841 and 21 in endometrial and endometriotic stromal cells, respectively.38”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [38]

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Findingnone given

    ERβ suppresses ERα expression and produces strikingly high ERβ-to-ERα ratios in endometriotic cells.

    “ERβ suppresses ERα expression and results in strikingly high ERβ-to-ERα ratios in endometriotic cells.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    Endometriotic stromal cells have extraordinarily higher ERβ and significantly lower ERα and PR levels than endometrial stromal cells.

    “Endometriotic stromal cells contained extraordinarily higher ERβ and significantly lower ERα and PR levels compared with endometrial stromal cells.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingcitation

    ERα and ERβ protein levels differ significantly between endometriotic and endometrial stromal cells, matching the mRNA findings.

    “Protein levels of ERα and ERβ were significantly different in these two groups similar to the findings regarding mRNA levels.38”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [38]

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisecitation

    Endometriotic tissue has access to large amounts of estradiol through multiple mechanisms, one of which is local aromatase expression.

    “Abundant quantities of estradiol are available for endometriotic tissue via several mechanisms including local aromatase expression.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [26]

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Interpretationreasoning

    The proposed mechanism may explain severely deficient PR-B in endometriotic stromal cells, which contributes to progesterone resistance in women with endometriosis.

    “This proposed mechanism may explain severely deficient PR-B in endometriotic stromal cells, which contributes to progesterone resistance in women with endometriosis.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). The quote only partly states this claim.

    Study design and conductown data

    A role of ERα promoter A in ERβ-mediated inhibition of ERα could not be ruled out.

    “A role of ERα promoter A could not be ruled out.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationnone given

    Estradiol reaches endometriosis through the circulation or local production and regulates the growth of endometriotic tissue.

    “Estradiol, which reaches endometriosis by circulation or is produced locally in endometriotic tissue, acts as a steroid hormone to regulate growth of endometriotic tissue.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    Estradiol is a key hormone for the growth and persistence of endometriotic tissue and for the inflammation and pain associated with endometriosis.

    “Circumstantial and laboratory evidence strongly support the notion that estradiol is a key hormone for the growth and persistence of endometriotic tissue as well as inflammation and pain associated with it.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given

    ERβ likely stimulates prostaglandin production in endometriotic tissues and cells by inducing COX2 expression.

    “It is likely that ERβ simulates prostaglandin production in endometriotic tissues and cells via inducing COX2 expression.”
    Quote in the paperNot a substantial claim
11 of 11
  • The paper relies on this without support.

    Progestin or oral contraceptive treatment does not reliably suppress the growth of endometriotic tissue.

    “Treatment with these agents, however, does not predictably suppress endometriotic tissue growth.”
  • The paper relies on this without support.

    Prolonged progestin therapy or oral contraceptives containing progestins reliably cause atrophy of eutopic endometrium.

    “The eutopic endometrium predictably becomes atrophic in response to prolonged progestin therapy or oral contraceptives that contain progestins.”
2 of 2

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Comparison between normal endometrium and samples of endometrial cancer and endometriosis lesions has revealed aberrant expression of both AR and ERs.

    “Comparison between the patterns of expression of receptor proteins in normal endometrium with samples of endometrial cancer and endometriosis lesions has revealed evidence of aberrant expression of both AR and ERs, which may result in novel disease-specific targets for the action of steroids generated by intracrine activation/metabolism discussed below.”

    From Endometrial Intracrinology: Oestrogens, Androgens and Endometrial Disorders (2018) · cites this paper as [35]

    The “Nuclear Receptor Expression in Endometriosis” section (page not provided) reports higher ERβ and lower ERα expression in endometriotic tissue than in eutopic endometrium. The passages do not support the claimed comparison involving androgen receptors (AR) or endometrial cancer samples. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • The highly expressed oestrogen in endometriotic tissue is present in its most biologically active form.

    “Furthermore, the highly expressed oestrogen in endometriotic tissue is present in its most biologically active form [14,15].”
  • Molecular studies have revealed the overexpression of oestrogen receptor beta (ERβ), which is >100 times higher in endometriotic lesions compared to normal endometrial tissue.

    “Molecular studies have revealed the overexpression of oestrogen receptor beta (ERβ), which is >100 times higher in endometriotic lesions compared to normal endometrial tissue.”
  • A meta-analysis showed that gene variants for interferon γ (IFNG CA repeat) and variants rs16826658 and rs2235529 of the WNT4 gene may be relevant to endometriosis.

    “A recently published meta-analysis showed that in addition to the above-mentioned variants, gene variants for interferon γ (IFNG CA repeat) and variants of rs16826658 and rs2235529 of the WNT4 gene may be relevant.”
  • The ERβ receptor encoded by the ESR2 gene is the dominant isoform in those with endometriosis.

    “The ERβ receptor encoded by the ESR2 gene is the dominant isoform in those with endometriosis [198].”

Cites

Flagged first, then by citations

11 of the 73 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Bulun, S., Monsavais, D., Pavone, M., Dyson, M., Xue, Q., Attar, E., Tokunaga, H., & Su, E.
Affiliations
  • Northwestern University (US)
  • Peking University (CN)
  • Istanbul University-Cerrahpaşa (TR)
  • Tohoku University (JP)
Venue
Seminars in Reproductive Medicine
Published
2012-01
Volume
30
Issue
01
Pages
39-45
ISSN
  • 1526-4564 (ISSN-L)
  • 1526-8004
OpenAlex
W2045579344
Cited by
307
References
73
Citations by year
2026: 17 · 2025: 25 · 2024: 30 · 2023: 25 · 2022: 35 · 2021: 24 · 2020: 19 · 2019: 22 · 2018: 22 · 2017: 13 · 2016: 13 · 2015: 23 · 2014: 18 · 2013: 15 · 2012: 4
FWCI
21.53
Type
journal article
Language
en
Open access
Locations
  • Seminars in Reproductive Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (submittedVersion)
  • PubMed Central (submittedVersion)
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
endometriosis, estrogen receptor beta, estradiol, aromatase, endometriotic stromal cells, promoter methylation, estrogen receptor alpha, progesterone resistance
MeSH terms
Animals, Endometriosis, Endometrium, Estrogen Antagonists

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