Cited by 386Retinoids in leukemia and cellular processesPeroxisome Proliferator-Activated ReceptorsPharmacogenetics and Drug Metabolism

Identification of the Retinoic Acid-inducible All-trans-retinoic Acid 4-Hydroxylase

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White, Jay A., Guo, Yu-Ding, Baetz, Kristin, Beckett-Jones, Barbara, Bonasoro, Joanne, Hsu, Katherine E., Dilworth, F. Jeffrey, Jones, Glenville +1 more·1996·Journal of Biological Chemistry

Abstract

Retinoic acid (RA) metabolites of vitamin A are key regulators of gene expression involved in embryonic development and maintenance of epithelial tissues. The cellular effects of RA are dependent upon the complement of nuclear receptors expressed (RARs and RXRs), which transduce retinoid signals into transcriptional regulation, the presence of cellular retinoid-binding proteins (CRABP and CRBP), which may be involved in RA metabolism, and the activity of RA metabolizing enzymes. We have been using the zebrafish as a model to study these processes. To identify genes regulated by RA during exogenous RA exposure, we utilized mRNA differential display. We describe the isolation and characterization of a cDNA, P450RAI, encoding a novel member of the cytochrome P450 family. mRNA transcripts for P450RAI are expressed normally during gastrulation, and in a defined pattern in epithelial cells of the regenerating caudal fin in response to exogenous RA. In COS-1 cells transfected with the P450RAI cDNA, all-trans-RA is rapidly metabolized to more polar metabolites. We have identified 4-oxo-RA and 4-OH-RA as major metabolic products of this enzyme. P450RAI represents the first enzymatic component of RA metabolism to be isolated and characterized at the molecular level and provides key insight into regulation of retinoid homeostasis.

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Crossref · 10.1074/jbc.271.47.29922

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Authors
White, J. A., Guo, Y.-D., Baetz, K., Beckett-Jones, B., Bonasoro, J., Hsu, K. E., Dilworth, F. J., Jones, G., & Petkovich, M.
Affiliations
Queen's University (CA)
Corresponding author
Petkovich, Martin
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1996-11
Volume
271
Issue
47
Pages
29922-29927
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2067256177
Cited by
382
References
34
Citations by year
2026: 3 · 2025: 2 · 2024: 5 · 2023: 4 · 2022: 5 · 2021: 15 · 2020: 5 · 2019: 6 · 2018: 5 · 2017: 5 · 2016: 9 · 2015: 5 · 2014: 11 · 2013: 18 · 2012: 12
FWCI
6.37
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinoids in leukemia and cellular processes
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Peroxisome Proliferator-Activated Receptors
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Pharmacogenetics and Drug Metabolism
Keywords
retinoic acid, cytochrome P450, retinoic acid metabolism, 4-oxo-retinoic acid, retinoid homeostasis, zebrafish, caudal fin regeneration, gastrulation, epithelial cells, mRNA differential display, cDNA cloning
MeSH terms
Retinoic Acid 4-Hydroxylase, Amino Acid Sequence, Animals, Base Sequence, Cytochrome P-450 Enzyme System, Molecular Sequence Data, Transfection, Tretinoin, Zebrafish, Gene Expression Regulation, Enzymologic, DNA, Complementary, Gene Expression Regulation, Developmental, COS Cells

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