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NR1I2 / PXR

nuclear receptor subfamily 1, group I, member 2

Pregnane X receptor (PXR), a NR1 Thyroid Hormone-Like Receptor, has been shown to mediate the effects of steroid hormones, including progesterone, glucocorticoid, and pregnenolone, and effects of xenobiotics, through the cytochrome P-450 3A gene family (CYP3A). PXR protects the body from hepatotoxicity of secondary bile acids such as lithocholic acid (LCA) by inducing expression of the hydroxylating cytochrome P450 enzyme CYP3A and promoting detoxification. PXR also has been suggested to regulate drug efflux by activating expression of the MDR1 gene, control the biosynthesis and metabolism of bile acids, and influence the protection of the feto-maternal system from the toxic effects of endogenous steroids and foreign substrates. PXR binds as a heterodimer (with RXR) to the CYP3A promoter region. At least six protein isoforms, produced by alternative splicing, have been reported.

Gene Name: nuclear receptor subfamily 1, group I, member 2
Family/Subfamily: NHR , NR1 Thyroid hormone-like
Synonyms: NR1I2, BXR, Orphan nuclear receptor PXR, Orphan nuclear receptor PAR1, PARq, PRR, PXR, Pregnane X receptor, ONR1, SAR, SXR
Target Sequences: NM_003889 NP_003880.3 O75469

Publications (5)

1
Human pregnane X receptor and resistance to chemotherapy in prostate cancer. Chen Y, Tang Y, Wang MT, Zeng S, Nie D. Cancer research. 2007 67:10361-7. [PubMed:17974979]
2
The phytoestrogen coumestrol is a naturally occurring antagonist of the human pregnane X receptor. Wang H, Li H, Moore LB, Johnson MD, Maglich JM, Goodwin B, Ittoop OR, Wisely B, Creech K, Parks DJ, Collins JL, Willson TM, Kalpana GV, Venkatesh M, Xie W, Cho SY, Roboz J, Redinbo M, Moore JT, Mani S. Molecular endocrinology (Baltimore, Md.). 2008 22:838-57. [PubMed:18096694]
3
Expanding the roles for pregnane X receptor in cancer: proliferation and drug resistance in ovarian cancer. Gupta D, Venkatesh M, Wang H, Kim S, Sinz M, Goldberg GL, Whitney K, Longley C, Mani S. Clinical cancer research : an official journal of the American Association for Cancer Research. 2008 14:5332-40. [PubMed:18765524]
4
Restoring blood-brain barrier P-glycoprotein reduces brain amyloid-beta in a mouse model of Alzheimer's disease. Hartz AM, Miller DS, Bauer B. Molecular pharmacology. 2010 77:715-23. [PubMed:20101004] [PMC:PMC2872973]
5
Prenatal glucocorticoid administration enhances bilirubin metabolic capacity and increases Ugt1a and Abcc2 gene expression via glucocorticoid receptor and PXR in rat fetal liver. Tsukasa Kobayashi, Yuko Takeba, Yuki Ohta, Masanori Ootaki, Keisuke Kida, Minoru Watanabe, Taroh Iiri, Naoki Matsumoto. The journal of obstetrics and gynaecology research. 2022 July;48:1591-1606. [Full Text Article] [PubMed:35445507]
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NR1I2 / PXR (15)
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NR1I2 / PXR ELISA Kit
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Sandwich
96-Well Strip Plate
Human
0.156 - 10 ng/ml
Colorimetric - 450nm (TMB)
Plasma, Serum
1 Plate/$783
NR1I2 / PXR ELISA Kit
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Sandwich
96-Well Strip Plate
Rat
0.312 - 20 ng/ml
Colorimetric - 450nm (TMB)
Plasma, Serum
1 Plate/$783
NR1I2 / PXR ELISA Kit
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Sandwich
96-Well Strip Plate
Human
0.313 - 20 ng/ml
Colorimetric - 450nm (TMB)
Cell Lysates, Tissue Homogenates
1 Plate/$834
NR1I2 / PXR ELISA Kit
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Sandwich
96-Well Strip Plate
Chicken
0.156 - 10 ng/ml
Colorimetric - 450nm (TMB)
1 Plate/$728
NR1I2 / PXR ELISA Kit
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Sandwich
96-Well Strip Plate
Guinea pig
0.625 - 40 ng/ml
Colorimetric - 450nm (TMB)
1 Plate/$728
NR1I2 / PXR ELISA Kit
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Sandwich
96-Well Strip Plate
Monkey
0.156 - 10 ng/ml
Colorimetric - 450nm (TMB)
1 Plate/$728
NR1I2 / PXR ELISA Kit
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Sandwich
96-Well Strip Plate
Porcine
0.156 - 10 ng/ml
Colorimetric - 450nm (TMB)
1 Plate/$728
NR1I2 / PXR ELISA Kit
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Sandwich
96-Well Strip Plate
Rabbit
62.5 - 4000 pg/ml
Colorimetric - 450nm (TMB)
1 Plate/$728
NR1I2 / PXR ELISA Kit
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Sandwich
96-Well Strip Plate
Sheep
0.781 - 50 ng/ml
Colorimetric - 450nm (TMB)
1 Plate/$760
NR1I2 / PXR ELISA Kit
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Sandwich
96-Well Microplate
Human
0.156 - 10 ng/ml
Colorimetric - 450nm (TMB)
Plasma, Serum
1 Plate/$651
NR1I2 / PXR ELISA Kit
Select
Sandwich
96-Well Strip Plate
Mouse
0.156 - 10 ng/ml
Colorimetric - 450nm (TMB)
Plasma, Serum
1 Plate/$783
NR1I2 / PXR ELISA Kit
Select
Sandwich
96-Well Strip Plate
Mouse
0.156 - 10 ng/ml
Colorimetric - 450nm (TMB)
Plasma, Serum, Tissue Homogenates
1 Plate/$579
NR1I2 / PXR ELISA Kit
Select
Sandwich
96-Well Strip Plate
Human
0.156 - 10 ng/ml
Colorimetric - 450nm (TMB)
Plasma, Serum, Tissue Homogenates
1 Plate/$579
NR1I2 / PXR ELISA Kit
Select
Sandwich CLIA
12 x 8-Well Microstrips
Human
31.25 - 2000 pg/ml
Chemiluminescent
Plasma, Serum
1 Plate/$728
NR1I2 / PXR ELISA Kit
Select
Sandwich
96-Well Strip Plate
Rat
0.313 - 20 ng/ml
Colorimetric - 450nm (TMB)
Cell Lysates, Tissue Homogenates
1 Plate/$893
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The data on this page has been compiled from LifeSpan internal sources, the National Center for Biotechnology Information (NCBI), and The Universal Protein Resource (UniProt).