Cited by 90Pharmacogenetics and Drug MetabolismProstate Cancer Treatment and ResearchDrug Transport and Resistance Mechanisms

Inactivation by UDP-glucuronosyltransferase enzymes: The end of androgen signaling

Chouinard, Sarah, Yueh, Mei-Fei, Tukey, Robert H., Giton, Frank, Fiet, Jean, Pelletier, Georges, Barbier, Olivier, Bélanger, Alain·2008·The Journal of Steroid Biochemistry and Molecular Biology

Abstract

Conjugation by UDP-Glucuronosyltransferase (UGT) is the major pathway of androgen metabolism and elimination in the human. High concentrations of glucuronide conjugates of androsterone (ADT) and androstane-3alpha,17beta-diol (3alpha-diol) are present in circulation and several studies over the last 30 years have concluded that the serum levels of these metabolites might reflect the androgen metabolism in several tissues, including the liver and androgen target tissues. Three UGT2B enzymes are responsible for the conjugation of DHT and its metabolites ADT and 3alpha-diol: UGT2B7, B15 and B17. UGT2B7 is expressed in the liver and skin whereas UGT2B15 and B17 were found in the liver, prostate and skin. Very specific antibodies against each UGT2B enzyme have been obtained and used for immunohistochemical studies in the human prostate. It was shown that UGT2B17 is expressed in basal cells whereas UGT2B15 is only localized in luminal cells, where it inactivates DHT. By using LNCaP cells, we have also demonstrated that the expression and activity of UGT2B15 and B17 are modulated by several endogenous prostate factors including androgen. Finally, to study the physiological role of UGT2B enzymes, transgenic mice bearing the human UGT2B15 gene were recently obtained. A decrease in reproductive tissue weight from transgenic animals compared to those from control animals was observed. In conclusion, the conjugation by UGT2B7, B15 and B17, which represents a non-reversible step in androgen metabolism, is an important means by which androgens are regulated locally. It is also postulated that UGT enzymes protect the tissue from deleteriously high concentrations of active androgen.

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Crossref · 10.1016/j.jsbmb.2008.03.016

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  • The UGT2B enzymes UGTB7, UGTB15, and UGTB17, responsible for glucuronidation of DHT and its metabolites androsterone and 3α-diol, are expressed in skin.

    “The three UGT2B enzymes, UGTB7, UGTB15, UGTB17, which are responsible for the glucuronation of DHT and its metabolites, androsterone and 3α-diol are all expressed in the skin [122, 123].”

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Authors
Chouinard, S., Yueh, M.-F., Tukey, R. H., Giton, F., Fiet, J., Pelletier, G., Barbier, O., & Bélanger, A.
Affiliations
  • Centre hospitalier de l'Université Laval (CA)
  • University of California San Diego (US)
  • Inserm (FR)
Corresponding author
Bélanger, Alain
Venue
The Journal of Steroid Biochemistry and Molecular Biology
Publisher
Elsevier BV
Published
2008-04
Volume
109
Issue
3-5
Pages
247-253
ISSN
0960-0760 (ISSN-L)
OpenAlex
W1997256089
Cited by
90
References
77
Citations by year
2026: 1 · 2025: 4 · 2024: 2 · 2023: 4 · 2022: 3 · 2021: 4 · 2020: 1 · 2019: 5 · 2018: 4 · 2017: 7 · 2016: 9 · 2015: 11 · 2014: 4 · 2013: 9 · 2012: 5
FWCI
4.84
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Steroid Biochemistry and Molecular Biology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Pharmacogenetics and Drug Metabolism
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Prostate Cancer Treatment and Research
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
Keywords
UDP-glucuronosyltransferase, androgen metabolism, UGT2B15, UGT2B17, UGT2B7, androsterone, dihydrotestosterone, prostate, basal cells, luminal cells, LNCaP cells, transgenic mice, androgen signaling, tissue-specific enzyme expression
MeSH terms
Androgens, Animals, Enzyme Activation, Humans, Polymorphism, Genetic, Steroids, Glucuronosyltransferase, Signal Transduction, Gene Expression Regulation, Enzymologic

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