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Reverse Yeast Two-hybrid System to Identify Mammalian Nuclear Receptor Residues that Interact with Ligands and/or Antagonists
Published on: November 15, 2013
Role of pregnane X receptor in chemotherapeutic treatment
1Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, People's Republic of China.
Abstract:
Pregnane X receptor (PXR) is a member of the nuclear receptor superfamily that differently expresses not only in human normal tissues but also in numerous types of human cancers. PXR can be activated by many endogenous substances and exogenous chemicals, and thus affects chemotherapeutic effects and intervenes drug-drug interactions by regulating its target genes involving drug metabolism and transportation, cell proliferation and apoptosis, and modulating endobiotic homeostasis. Tissue and context-specific regulation of PXR contributes to diverse effects in the treatment for numerous cancers. Genetic variants of PXR lead to intra- and inter-individual differences in the expression and inducibility of PXR, resulting in different responses to chemotherapy in PXR-positive cancers. The purpose of this review is to summarize and discuss the role of PXR in the metabolism and clearance of anticancer drugs. It is also expected that this review will provide insights into PXR-mediated enhancement for chemotherapeutic treatment, prediction of drug-drug interactions and personalized medicine.
Insights
Pregnane X receptor (PXR) influences chemotherapy effectiveness and drug interactions by regulating drug metabolism and transport. Understanding PXR
Area of Science:
- Pharmacology
- Molecular Biology
- Oncology
Background:
- Pregnane X receptor (PXR) is a nuclear receptor superfamily member with varied expression in normal tissues and cancers.
- PXR activation by endogenous and exogenous substances impacts chemotherapeutic outcomes and drug-drug interactions.
- Tissue-specific PXR regulation and genetic variants contribute to diverse cancer treatment responses.
Purpose of the Study:
- To review the role of PXR in anticancer drug metabolism and clearance.
- To explore PXR-mediated enhancement of chemotherapy.
- To provide insights into predicting drug-drug interactions and advancing personalized medicine.
Main Methods:
- Literature review of studies on PXR function in cancer.
- Analysis of PXR's role in drug metabolism and transport pathways.
- Examination of PXR's impact on chemotherapy efficacy and toxicity.
Main Results:
- PXR significantly influences the metabolism and clearance of various anticancer drugs.
- PXR activation affects drug-drug interactions through modulation of drug-metabolizing enzymes and transporters.
- Genetic variations in PXR lead to inter-individual differences in chemotherapy response.
Conclusions:
- PXR plays a critical role in anticancer drug disposition and treatment outcomes.
- Targeting PXR may offer strategies for enhancing chemotherapy efficacy and managing drug interactions.
- Further research into PXR is crucial for developing personalized cancer therapies.
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