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Mesenchymal-epithelial interactions in sex differentiation
Human Genetics
|January 1, 1981
Summary
Mesenchyme, not epithelium, drives sexual gland development by mediating androgen effects. This mesenchymal role persists into adulthood, maintaining gland function and morphology.
Area of Science:
- Reproductive Biology
- Developmental Biology
- Endocrinology
Background:
- Sexual gland development involves complex epithelial-mesenchymal interactions.
- Androgens are critical hormones regulating reproductive organ development and function.
Purpose of the Study:
- To elucidate the distinct roles of epithelium and mesenchyme in sexual gland development.
- To identify the primary mediator of androgenic effects on sexual gland morphogenesis.
Main Methods:
- Analysis of androgen receptor activity in embryonic and neonatal sexual glands.
- Investigation of mesenchymal influence on epithelial differentiation and function.
Main Results:
- Mesenchyme exhibits androgen receptor activity and mediates androgenic morphogenetic effects on epithelium.
- Mesenchyme induces specific epithelial morphogenesis, cytodifferentiation, and functional activities.
- Mesenchymal influence is crucial during development and in adulthood for maintaining epithelial homeostasis.
Conclusions:
- Mesenchyme is the primary target and mediator of androgen action during sexual gland development.
- Stromal cells, derived from mesenchyme, are key regulators of morphogenetic processes in adult hormone-dependent organs.