Molecular Background of Estrogen Receptor Gene Expression in Endometriotic Cells

Masao Izawa, Fuminori Taniguchi, Tasuku Harada
Reproductive sciences (Thousand Oaks, Calif.) · 2015 · vol. 23(7) , pp. 871–876 · doi:10.1177/1933719115623642 · PMID:26704524 · W2235585120
article OA: closed CC0 ⤵ 9 in-corpus citations
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⚙ AI-generated summary by claude@2026-06+body, 2026-06-07 ⓘ

This study evaluated ERα and ERβ mRNA expression in endometriotic cells, finding ERα mRNA levels were low, ERβ1 and ERβ2 were highly expressed, and overall ERα and ERβ mRNAs were equivalently expressed.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-07 ⓘ

This study evaluated the molecular background of estrogen receptor alpha (ERα) and estrogen receptor beta (ERβ) messenger RNA (mRNA) expression in endometriotic cells, focusing on which ER transcripts are present and how their abundance compares with endometrial cells. ERα mRNA was detected in endometriotic cells at about one-tenth the level found in endometrial cells, and three ERα-related mRNAs containing different 5′-untranslated exons were identified. ERβ expression depended mainly on the 0N promoter, included two open reading frames corresponding to ERβ1 and an ERβ2 splice variant, with ERβ1 about 40-fold higher than endometrial expression and ERβ2 at a comparable level; the study also reports equivalent ERα and ERβ mRNA expression overall in endometriotic cells. The paper’s limitation is that it characterizes ER mRNA transcript profiles rather than directly demonstrating protein activity or functional downstream signaling. This paper is centrally about endometriosis — it defines ERα/ERβ mRNA transcript patterns in endometriotic cells to explain estrogen-dependent pathophysiology in endometriosis.

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Condition tags

mesh:D004715

MeSH descriptors

Endometriosis Endometrium Estrogen Receptor alpha Estrogen Receptor beta Gene Expression Endometriosis Endometrium Estrogen Receptor alpha Estrogen Receptor alpha Estrogen Receptor beta Estrogen Receptor beta Exons Female Humans Open Reading Frames Promoter Regions, Genetic RNA, Messenger RNA, Messenger

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