Related Experiment Video
Updated: Aug 8, 2026
Quantitative Analysis of Protein Expression to Study Lineage Specification in Mouse Preimplantation Embryos
Published on: February 22, 2016
Expression of estrogen receptor alpha and beta during mouse embryogenesis
J G Lemmen1, J L Broekhof, G G Kuiper
1Hubrecht Laboratory, Netherlands Institute for Developmental Biology, Uppsalalaan 8, 3584 CT, Utrecht, The Netherlands.
Abstract:
In adult mammals numerous target tissues and organs for estrogens exist. Little is known about possible target organs during embryogenesis other than the reproductive tract and the gonads. This is the first report on the expression of estrogen receptor beta (ERbeta) in comparison with ERalpha mRNA during mouse embryogenesis. We found expression of estrogen receptor mRNA in the reproductive tract, but also in the atrial wall, brain, kidney, urethra, bladder neck, mammary gland primordium, midgut, cartilage primordia and perichondria.
Insights
Estrogen receptors (ERalpha and ERbeta) are found in many mouse embryonic organs beyond the reproductive system. This study maps their expression during development, revealing novel target sites for estrogen signaling.
Area of Science:
- Developmental biology
- Endocrinology
- Molecular biology
Background:
- Estrogen signaling is crucial in adult mammals, with diverse target tissues.
- Knowledge of estrogen target organs during embryogenesis is limited, primarily focusing on reproductive organs.
- Estrogen receptor alpha (ERalpha) and estrogen receptor beta (ERbeta) mediate estrogen's effects.
Purpose of the Study:
- To investigate the expression patterns of ERalpha and ERbeta mRNA during mouse embryogenesis.
- To identify potential non-reproductive target organs for estrogens during embryonic development.
Main Methods:
- Quantitative analysis of estrogen receptor alpha (ERalpha) and estrogen receptor beta (ERbeta) mRNA expression.
- Comparative study during mouse embryogenesis using molecular techniques.
Main Results:
- Estrogen receptor mRNA expression was detected in the developing reproductive tract and gonads.
- Significant expression of ERalpha and ERbeta mRNA was also observed in non-reproductive tissues, including the atrial wall, brain, kidney, urethra, bladder neck, mammary gland primordium, midgut, cartilage primordia, and perichondria.
- This indicates a broader role for estrogen signaling during embryogenesis than previously understood.
Conclusions:
- Estrogen receptors are widely expressed in various organs during mouse embryogenesis.
- These findings suggest that estrogen plays a significant role in the development of multiple organ systems beyond the reproductive tract.
- The study provides a foundational map for further research into estrogen's developmental functions.
