Mechanisms in tissue-specific regulation of estrogen biosynthesis in humans
Abstract
In humans, aromatase P450, which catalyses conversion of C(19)-steroids to estrogens, is expressed in several tissues, including gonads, brain, adipose tissue, skin and placenta, and is encoded by a single-copy gene (CYP19); however, this does not hold true for all species. The human gene is approximately 130 kb and its expression is regulated, in part, by tissue-specific promoters and by alternative splicing mechanisms. Using transgenic mouse technology, it was observed that ovary-, adipose tissue- and placenta-specific expression of human CYP19 is directed by relatively small segments of DNA within 500 bp upstream of each of the tissue-specific first exons. Thus, the use of alternative promoters allows greater versatility in tissue-specific regulation of CYP19 expression. Characterization and identification of transcription factors and crucial cis-acting elements within genomic regions that direct tissue-specific expression will contribute to improved understanding of the regulation of CYP19 expression in the tissues that synthesize estrogens under both physiological and pathophysiological conditions.
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Estrogen exerts a negative feedback on the hypothalamic-pituitary axis and decreases the release of FSH from the pituitary gland.
“Estrogen exerts a negative feedback on the hypothalamicpituitary axis and decreases the release of FSH from the pituitary gland (42)(43)(44)(45)(46).”
From A new era in ovulation induction (2006) · cites this paper as [43]
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- Authors
- Kamat, A., Hinshelwood, M. M., Murry, B. A., & Mendelson, C. R.
- Affiliations
- The University of Texas Southwestern Medical Center (US)
- Corresponding author
- Mendelson, Carole R
- ORCID
- Mendelson, Carole R
- Venue
- Trends in Endocrinology & Metabolism
- Publisher
- Elsevier BV
- Published
- 2002-04
- Volume
- 13
- Issue
- 3
- Pages
- 122-128
- ISSN
- 1043-2760 (ISSN-L)
- OpenAlex
- W2006521167
- Cited by
- 215
- References
- 64
- Citations by year
- 2026: 1 · 2025: 9 · 2024: 6 · 2023: 5 · 2022: 4 · 2021: 9 · 2020: 6 · 2019: 9 · 2018: 3 · 2017: 12 · 2016: 3 · 2015: 9 · 2014: 9 · 2013: 9 · 2012: 9
- FWCI
- 1.71
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Trends in Endocrinology and Metabolism (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institutes of Health
- National Institute of Diabetes and Digestive and Kidney Diseases (R01DK031206, 5-R01-DK31206)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sexual Differentiation and Disorders
- Keywords
- aromatase, estrogen synthesis, tissue-specific gene expression, alternative promoters, alternative splicing, transcription factors, cis-regulatory elements, ovary, adipose tissue, placenta, transgenic mice
- MeSH terms
- Adipose Tissue, Aromatase, Brain, Estrogens, Gonads, Humans, Organ Specificity, Placenta, Promoter Regions, Genetic, Alternative Splicing
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