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Estrogen-Mediated Regulation of Fam3d in Mouse Uterus During the Estrous Cycle
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Estrogen-Mediated Regulation of Fam3d in Mouse Uterus During the Estrous Cycle
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Journal Article
Estrogen-Mediated Regulation of Fam3d in Mouse Uterus During the Estrous Cycle
2025
Overview
In mice, the uterus undergoes dynamic changes regulated by estrogen and progesterone during the estrous cycle. Proper regulation of these changes is critical for successful pregnancy. The Family with sequence similarity 3 (Fam3) gene family, comprising
,
,
, and
, encodes cytokine-like proteins, but their uterine roles remain unclear. This study examined Fam3 expression in the mouse uterus across the estrous cycle and assessed estrogen-dependent regulation. RNA-seq analysis revealed increased
,
, and
expression during proestrus and estrus. Notably,
showed dynamic regulation, peaking in these stages. To test estrogen regulation, estradiol was administered to ovariectomized mice, showing maximal
expression at 24 h post-injection. ERα antagonist treatment blocked this induction, indicating ERα-mediated regulation. Immunofluorescence localized FAM3D to the cytoplasm of luminal and glandular epithelia, especially in the apical region, with no stromal or nuclear expression. These findings suggest that estrogen and Erα (Estrogen receptor alpha) signaling control Fam3d expression, implicating FAM3D in uterine epithelial function. This study provides novel insights into
's role in uterine physiology and a foundation for exploring its function in reproduction.
Publisher
MDPI AG,Multidisciplinary Digital Publishing Institute (MDPI)
