Abstract |
2,3,7,8-Tetrachlorodibenzo-p-dioxin ( TCDD) and related compounds bind to the intracellular aryl hydrocarbon ( Ah) receptor and induce a diverse spectrum of biochemical and toxic responses. Ah receptor agonists also modulate several endocrine pathways, and research in several laboratories has shown that TCDD and related compounds inhibit estrogen (E2)-induced responses in the rodent mammary and uterus and in human breast cancer cell lines. The mechanisms of interaction between the TCDD- and E2-induced signaling pathways are complex and some of the inhibitory effects may be related to 5'-flanking inhibitory- dioxin responsive elements (i-DREs) in target genes. The antiestrogenic and antitumorigenic activity of Ah receptor agonists has been used to prepare a series of relatively non-toxic alkyl polychlorinated dibenzofurans which have clinical potential for treatment of mammary cancer.
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Authors | S Safe, V Krishnan |
Journal | Toxicology letters
(Toxicol Lett)
Vol. 82-83
Pg. 731-6
(Dec 1995)
ISSN: 0378-4274 [Print] Netherlands |
PMID | 8597135
(Publication Type: Journal Article, Research Support, U.S. Gov't, P.H.S., Review)
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Chemical References |
- Estrogen Antagonists
- Polychlorinated Dibenzodioxins
- Receptors, Aryl Hydrocarbon
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Topics |
- Animals
- Base Sequence
- Estrogen Antagonists
(toxicity)
- Humans
- Molecular Sequence Data
- Polychlorinated Dibenzodioxins
(toxicity)
- Receptors, Aryl Hydrocarbon
(physiology)
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