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Updated: Jul 14, 2026
10:51
Reverse Yeast Two-hybrid System to Identify Mammalian Nuclear Receptor Residues that Interact with Ligands and/or Antagonists
Published on: November 15, 2013
The aryl hydrocarbon receptor sans xenobiotics: endogenous function in genetic model systems
Brian J McMillan1, Christopher A Bradfield
1McArdle Laboratory for Cancer Research, University of Wisconsin Shool of Medicine and Public Health, Madison, Wisconsin, USA.
Molecular Pharmacology
|May 31, 2007
Summary
The aryl hydrocarbon receptor (AHR) does more than bind environmental toxins. Emerging research reveals its crucial roles in normal biological functions across species, suggesting toxicity is linked to its intrinsic physiology.
Area of Science:
- Environmental Toxicology
- Molecular Biology
- Evolutionary Biology
Background:
- The aryl hydrocarbon receptor (AHR) is known as a receptor for environmental contaminants like dioxins.
- Recent findings suggest AHR also plays essential roles in normal biological functions.
- Understanding AHR's endogenous functions is key to interpreting its toxicological effects.
Purpose of the Study:
- To review the current understanding of endogenous AHR biology.
- To explore AHR's functions in both vertebrate and invertebrate model organisms.
- To provide a comprehensive overview of AHR's diverse roles.
Main Methods:
- Literature review of existing research on AHR.
- Analysis of studies involving model organisms like Mus musculus, Caenorhabditis elegans, and Drosophila melanogaster.
- Synthesis of findings on both endogenous and xenobiotic-mediated AHR functions.
Main Results:
- AHR orthologs mediate diverse endogenous functions in vertebrates and invertebrates.
- Evidence supports AHR's involvement in fundamental biological processes.
- Xenobiotic toxicity can be understood within the framework of AHR's natural physiology.
Conclusions:
- The traditional view of AHR solely as a receptor for environmental toxins is incomplete.
- AHR possesses significant endogenous functions critical for organismal biology.
- Future research should consider AHR's intrinsic roles when assessing environmental impacts.
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