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Human Endometriosis Tissue Microarray Reveals Site-specific Expression of Estrogen Receptors, Progesterone Receptor,

Mariano Colón-Caraballo1, Miosotis García2, Adalberto Mendoza3,4

  • 1Departments of Basic Sciences, Microbiology Division.

Applied Immunohistochemistry & Molecular Morphology : AIMM
|April 10, 2018
PubMed

Insights

Endometriosis therapies lack personalization. This study reveals varied hormone receptor expression in endometriosis lesions, suggesting tailored treatments based on individual receptor profiles for better outcomes.

Area of Science:

  • Reproductive biology
  • Endocrinology
  • Oncology

Background:

  • Current endometriosis treatments are hormone-based but lack personalization.
  • Therapies do not consider individual ovarian hormone receptor expression.
  • Personalized medicine approaches, common in breast cancer, are lacking for endometriosis.

Purpose of the Study:

  • To characterize the expression of estrogen receptors alpha (ESR1), beta (ESR2), and progesterone receptors (PGR) in endometriosis.
  • To analyze receptor expression in different endometriotic lesion types and eutopic endometrium.
  • To explore potential correlations between receptor expression and patient outcomes.

Main Methods:

  • Utilized tissue microarrays (TMA) to analyze receptor expression.
  • Examined nuclear expression levels of ESR1, ESR2, and PGR.
  • Differentiated expression by tissue type (ectopic vs. eutopic) and cell type (glands vs. stroma).

Main Results:

  • Ovarian lesions showed low ESR1/PGR and high ESR2 expression; fallopian tube lesions showed high expression of all three receptors.
  • Endometrial stroma in patients had lower ESR1 and higher ESR2 compared to controls.
  • Increased cell proliferation markers (Ki67) were observed in various lesions and secretory endometrium from patients.

Conclusions:

  • Endometriosis exhibits significant heterogeneity in hormone receptor expression.
  • Lesion type and patient-specific variability influence receptor profiles.
  • Understanding these differences can guide personalized hormone therapy selection for endometriosis.

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