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Published on: November 15, 2013
Clinical Relevance of the Constitutive Androstane Receptor
Sydney Stern1, Ritika Kurian1, Hongbing Wang2
1Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, Maryland.
Abstract:
Constitutive androstane receptor (CAR) (NR1I3), a xenobiotic receptor, has long been considered a master mediator of drug disposition and detoxification. Accumulating evidence indicates that CAR also participates in various physiologic and pathophysiological pathways regulating the homeostasis of glucose, lipid, and bile acids, and contributing to cell proliferation, tissue regeneration and repair, as well as cancer development. The expression and activity of CAR can be regulated by various factors, including small molecular modulators, CAR interaction with other transcription factors, and naturally occurring genetic variants. Given that the influence of CAR has extended beyond the realm of drug metabolism and disposition and has expanded into a potential modulator of human diseases, growing efforts have centered on understanding its clinical relevance and impact on human pathophysiology. This review highlights the current information available regarding the contribution of CAR to various metabolic disorders and cancers and ponders the possible challenges that might arise from pursuing CAR as a potential therapeutic target for these diseases. SIGNIFICANCE STATEMENT: The growing importance of the constitutive androstane receptor (CAR) in glucose and lipid metabolism as well as its potential implication in cell proliferation emphasizes a need to keenly understand the biological function and clinical impact of CAR. This minireview captures the clinical relevance of CAR by highlighting its role in metabolic disorders and cancer development.
Insights
The constitutive androstane receptor (CAR) is crucial for drug detoxification and also impacts glucose, lipid, and bile acid metabolism. Understanding CAR
Area of Science:
- Pharmacology and Toxicology
- Molecular Biology
- Metabolic Diseases
Background:
- The constitutive androstane receptor (CAR) (NR1I3) is a key regulator of drug metabolism and detoxification.
- Emerging evidence highlights CAR's role in physiological processes like glucose, lipid, and bile acid homeostasis.
- CAR is implicated in cell proliferation, tissue repair, and cancer development.
Purpose of the Study:
- To review the multifaceted roles of CAR beyond drug metabolism.
- To summarize CAR's contribution to metabolic disorders and cancer.
- To discuss challenges in targeting CAR therapeutically.
Main Methods:
- Literature review of current research on CAR function.
- Analysis of CAR's involvement in metabolic pathways.
- Examination of CAR's role in oncogenesis and disease.
Main Results:
- CAR significantly influences glucose, lipid, and bile acid metabolism.
- CAR activity is modulated by various factors including small molecules and genetic variants.
- CAR plays a role in cell proliferation, regeneration, and cancer development.
Conclusions:
- CAR's influence extends to metabolic homeostasis and disease pathology.
- Targeting CAR presents potential therapeutic avenues for metabolic disorders and cancer.
- Further research is needed to fully elucidate CAR's clinical relevance and therapeutic potential.
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