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Updated: Apr 16, 2026

Using Ex Vivo Upright Droplet Cultures of Whole Fetal Organs to Study Developmental Processes during Mouse Organogenesis
Published on: October 21, 2015
Expression and localization of aromatase during fetal mouse testis development
Caroline Borday1, Jorge Merlet1, Chrystèle Racine1
1Laboratory of Development of the Gonads, Unit of Stem Cells and Radiation, Univ. Paris Diderot, Sorbonne Paris Cité, BP 6, 92265 Fontenay-aux-Roses, France ; CEA, DSV, iRCM, SCSR, LDG, 92265 Fontenay-aux-Roses, France ; Unit of Stem Cells and Radiation, LDG / SCSR / iRCM / DSV, INSERM, Centre CEA, BP6, Unité 967, F-92265 Fontenay aux Roses, France.
Aromatase, crucial for hormone balance, is expressed early in mouse fetal testis development, including in germ cells. This finding suggests a species-specific role in endocrine disruption susceptibility.
Area of Science:
- Reproductive Biology
- Endocrinology
- Developmental Biology
Background:
- Androgens and estrogens are vital for testis development and function.
- Maintaining the androgen-estrogen balance during fetal development is critical, especially concerning endocrine disruptors.
- Cytochrome P450 19A1 (aromatase) is the key enzyme regulating this balance by converting androgens to estrogens.

