Studying the Activation of Steroid and Xenobiotic Receptor in Different Species
Author Information
Author(s): Matthew R. Milnes, Adriana Garcia, Emily Grossman, Felix Grün, Jason Shiotsugu, Michelle M. Tabb, Yukio Kawashima, Yoshinao Katsu, Hajime Watanabe, Taisen Iguchi, Bruce Blumberg
Primary Institution: University of California, Irvine
Hypothesis
Can NR1I2 orthologs from various model species predict xenobiotic disposition and environmental health risk?
Conclusion
The study found significant interspecies variation in NR1I2 activation by various ligands, which should be considered when selecting animal models for environmental health risk assessment.
Supporting Evidence
- NR1I2 orthologs were activated by various ligands in a dose-dependent manner.
- Closely related species show broadly similar patterns of activation.
- Considerable variation to individual compounds exists among species.
- Activation of NR1I2 is essential for understanding xenobiotic metabolism.
Takeaway
Different animals react differently to certain chemicals, so we need to be careful when using them to predict how those chemicals will affect humans.
Methodology
The study used chimeric fusion plasmid vectors to screen NR1I2 orthologs against 27 xenobiotic compounds using a cotransfection receptor activation assay.
Limitations
The study's in vitro results may not fully represent in vivo responses due to differences in biological environments.
Digital Object Identifier (DOI)
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