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Ontogeny of expression of the genes for steroidogenic enzymes P450 side- chain cleavage, 3 beta-hydroxysteroid dehydrogenase, P450 17 alpha- hydroxylase/C17-20 lyase, and P450 aromatase in fetal mouse gonads
Abstract
It is well known that fetal androgens are required for male sexual differentiation, and it is thought that fetal ovaries are not steroidogenically active. However, molecular details, such as which steroidogenic enzymes are present in fetal testes and which enzymes are absent in fetal ovaries, have not been established. The pattern of expression of the genes that encode four of the steroidogenic enzymes necessary for androgen and estrogen production was examined during fetal development in mouse gonads. Messenger RNA (mRNA) expression for cholesterol side-chain cleavage (P450scc), 3 beta-hydroxysteroid dehydrogenase/delta 5-delta 4-isomerase (3 beta HSD), P450 17 alpha-hydroxylase/C17-20 lyase (P450c17), and P450 aromatase (P450arom) was determined before ovaries and testes were distinguishable (13 days postconception) and during sexual differentiation (15, 17, and 20 days postconception) using reverse transcriptase-polymerase chain reactions (RT-PCR). A PCR assay for Sry was used to determine gender on day 13. P450scc, 3 beta HSD, and P450c17 transcripts were detected at all ages in fetal testes, indicating that mRNAs for the steroidogenic enzymes that are required to convert cholesterol to androgens are present in the male gonad even before sexual differentiation. P450arom mRNA was detected in several fetal testes on day 17, but consistently observed on day 20. The expression of P450arom suggests the potential of fetal and neonatal testes to convert androgens to estrogens. In contrast, although 3 beta HSD mRNA was detected in several of the ovaries examined, the detection of P450scc, P450c17, and P450arom transcripts was rare. These data suggest that the absence of fetal ovarian steroid hormone production is the result of lack of expression of at least three of the steroidogenic enzymes, P450scc, P450c17, and P450arom.
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Citations
Cited by
Overview of steroidogenic enzymes in the pathway from cholesterol to active steroid hormones
Payne, A. H., & Hales, D. B. (2004) · Endocrine Reviews · doi:10.1210/er.2003-0030 · Cited by 1,766
Self-citationMolecular biology of the 3β-hydroxysteroid dehydrogenase/Δ5-Δ4 –isomerase gene family
Simard, J., Ricketts, M.-L., Gingras, S., Soucy, P., Feltus, F. A., & Melner, M. H. (2005) · Endocrine Reviews · doi:10.1210/er.2002-0050 · Cited by 620
Temperature-Dependent Sex Determination in Vertebrates
(2018) · Open Monographs · doi:10.5479/si.9781944466213 · Cited by 522
Tevosian, S. G., Albrecht, K. H., Crispino, J. D., Fujiwara, Y., Eicher, E. M., & Orkin, S. H. (2002) · Development · doi:10.1242/dev.129.19.4627 · Cited by 369
Rubin, B. S., Lenkowski, J. R., Schaeberle, C. M., Vandenberg, L. N., Ronsheim, P. M., & Soto, A. M. (2006) · Endocrinology · doi:10.1210/en.2006-0189 · Cited by 311
Metadata
- Authors
- Greco, T. L., & Payne, A. H.
- Venue
- Endocrinology
- Publisher
- Oxford University Press
- Published
- 1994-07-01
- Volume
- 135
- Issue
- 1
- Pages
- 262-268
- ISSN
- 0013-7227 (ISSN-L)
- OpenAlex
- W1966856848
- Cited by
- 175
- References
- 0
- FWCI
- 1.35
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Ontogeny of expression of the genes for steroidogenic enzymes P450 side- chain cleavage, 3 beta-hydroxysteroid dehydrogenase, P450 17 alpha- hydroxylase/C17-20 lyase, and P450 aromatase in fetal mouse gonads. https://app.cochat.ai/papers/10.1210/en.135.1.262
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- Greco, T. L., & Payne, A. H. (1994). Ontogeny of expression of the genes for steroidogenic enzymes P450 side- chain cleavage, 3 beta-hydroxysteroid dehydrogenase, P450 17 alpha- hydroxylase/C17-20 lyase, and P450 aromatase in fetal mouse gonads. Endocrinology. https://doi.org/10.1210/en.135.1.262
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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