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PMID |
Sentence |
1 |
15764585
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Characterization of activating signal cointegrator-2 as a novel transcriptional coactivator of the xenobiotic nuclear receptor constitutive androstane receptor.
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2 |
15764585
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In this report, we demonstrate that ASC-2 also serves as a coactivator of the xenobiotic nuclear receptor constitutive androstane receptor (CAR).
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3 |
15764585
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In support of this idea, DN1, a fragment of ASC-2 encompassing the first LXXLL motif, suppressed CAR transactivation, and coexpressed ASC-2 but not other LXXLL-type coactivators such as thyroid hormone receptor-associated protein 220 reversed this repression.
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4 |
15764585
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Characterization of activating signal cointegrator-2 as a novel transcriptional coactivator of the xenobiotic nuclear receptor constitutive androstane receptor.
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5 |
15764585
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In this report, we demonstrate that ASC-2 also serves as a coactivator of the xenobiotic nuclear receptor constitutive androstane receptor (CAR).
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6 |
15764585
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In support of this idea, DN1, a fragment of ASC-2 encompassing the first LXXLL motif, suppressed CAR transactivation, and coexpressed ASC-2 but not other LXXLL-type coactivators such as thyroid hormone receptor-associated protein 220 reversed this repression.
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7 |
16221731
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Here, we describe a predicted RNA-binding protein, CAR-1, that associates with CGH-1 and Y-box proteins within a conserved germline RNA-protein (RNP) complex, and in cytoplasmic particles in the gonad and early embryo.
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8 |
16221731
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We conclude that CAR-1 is of critical importance for oogenesis, that the association between CAR-1 and CGH-1 has been conserved, and that the regulation of physiological germ cell apoptosis is specifically influenced by certain functions of the CGH-1/CAR-1 RNP complex.
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9 |
16221731
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Here, we describe a predicted RNA-binding protein, CAR-1, that associates with CGH-1 and Y-box proteins within a conserved germline RNA-protein (RNP) complex, and in cytoplasmic particles in the gonad and early embryo.
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10 |
16221731
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We conclude that CAR-1 is of critical importance for oogenesis, that the association between CAR-1 and CGH-1 has been conserved, and that the regulation of physiological germ cell apoptosis is specifically influenced by certain functions of the CGH-1/CAR-1 RNP complex.
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11 |
16259220
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Sterols, bile acids and fatty acids are the endogenous ligands of the liver orphan receptor, farnesoid X receptor, peroxisome proliferator-activated receptor, vitamin D receptor, constitutive androstane receptor and pregnane X receptor.
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12 |
16679742
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The nuclear receptor constitutive androstane receptor (CAR), a key transcription factor for the expression of cytochrome P450 (CYP) 2B genes, resides in the cytoplasm under untreated conditions and translocates into the nucleus upon xenobiotic exposure.
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13 |
16679742
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CAR forms a multiprotein complex including heat shock protein 90 in the cytoplasm as the glucocorticoid receptor, and it is likely that protein phosphatase 2A plays a critical role in the first step of CAR nuclear translocation.
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14 |
16679742
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In obese mice fed a high-fat diet, however, hepatic CYP3A levels are drastically decreased without any significant changes in the expression of nuclear receptors including the pregnane X receptor and hepatocyte nuclear factor-4, which are known to be key transcription factors in the expression of CYP3A genes.
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15 |
17588816
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FXR ligands are currently under clinical investigation for the treatment of cholestasis, dyslipidemic disorders and conditions of insulin resistance in type 2 diabetes and non-alcoholic steatohepatitis (NASH).
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16 |
17588816
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Interaction of FXR with other BAs and xenobiotics sensors such as the constitutive androstane receptor and the pregnane X receptor might allow the development of combination therapies for liver and metabolic disorders.
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17 |
19275551
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Role of NF-kappaB in the regulation of cytochrome P450 enzymes.
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18 |
19275551
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Nuclear factor kappa B (NF-kappaB) is an important transcription factor that regulates a wide spectrum of genes including cytochrome P450 (CYP), the most important family of drug metabolizing enzymes.
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19 |
19275551
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Therefore, in this review, we addressed the potential role of NF-kappaB in CYP regulation.
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20 |
19275551
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We proposed three mechanisms by which NF-kappaB can regulate CYP expression and activity.
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21 |
19275551
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First, NF-kappaB can directly regulate the expression of CYP1A1, CYP2B1/2, CYP2C11, CYP2D5, CYP2E1, CYP3A7, and CYP27B1 through binding to the promoter region of these genes.
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22 |
19275551
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Second, NF-kappaB indirectly regulates the transcription of CYP genes through mutual repression with some nuclear receptors that are involved in CYP regulation such as AhR, CAR, GR, PXR, RXR, PPAR, FXR, and LXR.
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23 |
19275551
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Finally, NF-kappaB can regulate CYP activity at post-transcriptional level by inducing heme oxygenase or by affecting the CYP protein stability.
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24 |
19275551
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Therefore, we propose that NF-kappaB could be one of the links between inflammation, oxidative stress, and CYP regulation in these diseases.
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25 |
19275551
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In conclusion, NF-kappaB plays a crucial role in the regulation of CYP through several mechanisms and this role can explain the altered CYP regulation in many conditions.
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26 |
19617349
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The constitutive androstane receptor is an anti-obesity nuclear receptor that improves insulin sensitivity.
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27 |
19932133
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Primary bile acids (chenodeoxycholic acid and cholic acid) are physiological ligands/activators of farnesoid-X-receptor (FXR), pregnane-X-receptor (PXR) and constitutive androstane receptor (CAR), while litocholic acid is a ligand for the Vitamin D receptor (VDR) and the G-protein coupled receptor TGR5.
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28 |
19932133
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Despite FXR demonstrates a high selectivity for bile acids, PXR and CAR are relatively promiscuous receptors integrating lipid homeostasis with xenobiotic metabolism.
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29 |
19932133
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FXR, PXR, CAR and TGR exert synergistic activities in regulating lipid and glucose homeostasis and energy expenditure and liver and peripheral insulin sensitivity.
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30 |
20869355
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Constitutive androstane receptor (CAR) and pregnane X receptor (PXR) are closely related orphan nuclear receptor proteins that share several ligands and target overlapping sets of genes involved in homeostasis and all phases of drug metabolism.
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31 |
20869355
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To investigate the differences between CAR1, CAR3 and PXR, and to look for more CAR ligands that may be of use in quantitative structure-activity relationship (QSAR) studies, we performed a luciferase transactivation assay screen of 60 mostly non-steroid compounds.
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32 |
20869355
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Distinct differences in agonist versus inverse agonist/antagonist effects were seen in 49 compounds that had some ligand effect on at least one receptor and 18 that had effects on all three receptors; eight were CAR1 ligands only, three were CAR3 only ligands and four affected PXR only.
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33 |
20869355
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Constitutive androstane receptor (CAR) and pregnane X receptor (PXR) are closely related orphan nuclear receptor proteins that share several ligands and target overlapping sets of genes involved in homeostasis and all phases of drug metabolism.
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34 |
20869355
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To investigate the differences between CAR1, CAR3 and PXR, and to look for more CAR ligands that may be of use in quantitative structure-activity relationship (QSAR) studies, we performed a luciferase transactivation assay screen of 60 mostly non-steroid compounds.
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35 |
20869355
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Distinct differences in agonist versus inverse agonist/antagonist effects were seen in 49 compounds that had some ligand effect on at least one receptor and 18 that had effects on all three receptors; eight were CAR1 ligands only, three were CAR3 only ligands and four affected PXR only.
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36 |
20869355
|
Constitutive androstane receptor (CAR) and pregnane X receptor (PXR) are closely related orphan nuclear receptor proteins that share several ligands and target overlapping sets of genes involved in homeostasis and all phases of drug metabolism.
|
37 |
20869355
|
To investigate the differences between CAR1, CAR3 and PXR, and to look for more CAR ligands that may be of use in quantitative structure-activity relationship (QSAR) studies, we performed a luciferase transactivation assay screen of 60 mostly non-steroid compounds.
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38 |
20869355
|
Distinct differences in agonist versus inverse agonist/antagonist effects were seen in 49 compounds that had some ligand effect on at least one receptor and 18 that had effects on all three receptors; eight were CAR1 ligands only, three were CAR3 only ligands and four affected PXR only.
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39 |
21768169
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Potential role of estradiol and progesterone in insulin resistance through constitutive androstane receptor.
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40 |
21768169
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The constitutive androstane receptor (CAR) may participate in insulin resistance in pregnancy, and sex steroids, estradiol (E(2)) and progesterone, may also be involved.
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41 |
21768169
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DNA affinity immunoblotting and chromatin immunoprecipitation assay revealed that CAR ligand enhanced the recruitment of the gluconeogenic transcription factors, forkhead box O1 (FOXO1) and hepatocyte nuclear factor 4α (HNF4α), but sex steroids suppressed these recruitments on the CAR responsive element.
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42 |
21768169
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Potential role of estradiol and progesterone in insulin resistance through constitutive androstane receptor.
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43 |
21768169
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The constitutive androstane receptor (CAR) may participate in insulin resistance in pregnancy, and sex steroids, estradiol (E(2)) and progesterone, may also be involved.
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44 |
21768169
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DNA affinity immunoblotting and chromatin immunoprecipitation assay revealed that CAR ligand enhanced the recruitment of the gluconeogenic transcription factors, forkhead box O1 (FOXO1) and hepatocyte nuclear factor 4α (HNF4α), but sex steroids suppressed these recruitments on the CAR responsive element.
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45 |
22649068
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Treatment with constitutive androstane receptor ligand during pregnancy prevents insulin resistance in offspring from high-fat diet-induced obese pregnant mice.
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46 |
22649068
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The constitutive androstane receptor (CAR) has been reported to decrease insulin resistance even during pregnancy, while exposure to a high-fat diet (HFD) in utero in mice can induce a type 2 diabetes phenotype that can be transmitted to the progeny.
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47 |
22649068
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This treatment also increased adiponectin mRNA expression, suppressed leptin expression in adipose tissues of OH mice, and abolished the effect of HFD on the epigenetic modifications of the genes encoding adiponectin and leptin in the offspring during immaturity and adulthood.
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48 |
22649068
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Treatment with constitutive androstane receptor ligand during pregnancy prevents insulin resistance in offspring from high-fat diet-induced obese pregnant mice.
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49 |
22649068
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The constitutive androstane receptor (CAR) has been reported to decrease insulin resistance even during pregnancy, while exposure to a high-fat diet (HFD) in utero in mice can induce a type 2 diabetes phenotype that can be transmitted to the progeny.
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50 |
22649068
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This treatment also increased adiponectin mRNA expression, suppressed leptin expression in adipose tissues of OH mice, and abolished the effect of HFD on the epigenetic modifications of the genes encoding adiponectin and leptin in the offspring during immaturity and adulthood.
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51 |
22889594
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The pregnane X receptor (PXR) and the constitutive androstane receptor (CAR) are two closely related and liver-enriched nuclear hormone receptors originally defined as xenobiotic receptors.
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52 |
23330546
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Bile acids are signaling molecules that activate nuclear receptors, such as farnesoid X receptor, pregnane X receptor, constitutive androstane receptor, and vitamin D receptor, and play a critical role in the regulation of lipid, glucose, energy, and drug metabolism.
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53 |
23349477
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PXR ablation alleviates diet-induced and genetic obesity and insulin resistance in mice.
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54 |
23349477
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The pregnane X receptor (PXR), along with its sister receptor constitutive androstane receptor (CAR), was initially characterized as a xenobiotic receptor that regulates drug metabolism.
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55 |
23349477
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PXR ablation inhibited high-fat diet (HFD)-induced obesity, hepatic steatosis, and insulin resistance, which were accounted for by increased oxygen consumption, increased mitochondrial β-oxidation, inhibition of hepatic lipogenesis and inflammation, and sensitization of insulin signaling.
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56 |
23349477
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Mechanistically, the metabolic benefits of PXR ablation were associated with the inhibition of c-Jun NH2-terminal kinase activation and downregulation of lipin-1, a novel PXR target gene.
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57 |
17591676
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Dehydroepiandrosterone induces human CYP2B6 through the constitutive androstane receptor.
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58 |
17591676
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Treatment of rats with DHEA influences expression of cytochrome P450 (P450) genes, including peroxisome proliferator-activated receptor alpha (PPAR alpha)- and pregnane X receptor (PXR)-mediated induction of CYP4As and CYP3A23, and suppression of CYP2C11.
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59 |
17591676
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DHEA treatment elevated the expression and activities of CYP3A4, CYP2C9, CYP2C19, and CYP2B6 in primary cultures of human hepatocytes.
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60 |
17591676
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Induction of CYP3A4 in human hepatocytes was consistent with studies in rats, but induction of CYP2Cs was unexpected.
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61 |
17591676
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Because CYP2B6 induction by DHEA in human hepatocytes might involve either PXR or constitutive androstane receptor (CAR) activation, we performed experiments in primary hepatocytes from CAR knockout mice and observed that CAR was required for maximal induction of Cyp2b10 by DHEA.
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62 |
17591676
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The effect of DHEA on the activation of the xenosensors PPAR alpha, PXR, and CAR, and the consequent potential for adverse drug/toxicant interactions should be considered in humans treated with this nutriceutical agent.
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63 |
17591676
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Dehydroepiandrosterone induces human CYP2B6 through the constitutive androstane receptor.
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64 |
17591676
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Treatment of rats with DHEA influences expression of cytochrome P450 (P450) genes, including peroxisome proliferator-activated receptor alpha (PPAR alpha)- and pregnane X receptor (PXR)-mediated induction of CYP4As and CYP3A23, and suppression of CYP2C11.
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65 |
17591676
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DHEA treatment elevated the expression and activities of CYP3A4, CYP2C9, CYP2C19, and CYP2B6 in primary cultures of human hepatocytes.
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66 |
17591676
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Induction of CYP3A4 in human hepatocytes was consistent with studies in rats, but induction of CYP2Cs was unexpected.
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67 |
17591676
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Because CYP2B6 induction by DHEA in human hepatocytes might involve either PXR or constitutive androstane receptor (CAR) activation, we performed experiments in primary hepatocytes from CAR knockout mice and observed that CAR was required for maximal induction of Cyp2b10 by DHEA.
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68 |
17591676
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The effect of DHEA on the activation of the xenosensors PPAR alpha, PXR, and CAR, and the consequent potential for adverse drug/toxicant interactions should be considered in humans treated with this nutriceutical agent.
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69 |
20736321
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Hepatic gene expression of Cyp2b10, Cyp2c29, Cyp3a11, Cyp2e1, Cyp4a10, Nr1i2, Nr1i3, slco1a1, slco1a4, slco1b2, abcb1b, abcc2, and abcg2 was examined using the real-time polymerase chain reaction method in male db/db mice, a commonly used type II diabetes model.
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70 |
20736321
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Functional analysis was conducted in hepatic microsomes for Cyp2b, Cyp2c, and Cyp3a using cytochrome P450-specific substrates.
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71 |
20736321
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No expression changes were observed for Cyp2e1, Nr1i2, Nr1i3, abcc2, and abcg2.
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72 |
20736321
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Hepatic gene expression of Cyp2b10, Cyp2c29, Cyp3a11, Cyp2e1, Cyp4a10, Nr1i2, Nr1i3, slco1a1, slco1a4, slco1b2, abcb1b, abcc2, and abcg2 was examined using the real-time polymerase chain reaction method in male db/db mice, a commonly used type II diabetes model.
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73 |
20736321
|
Functional analysis was conducted in hepatic microsomes for Cyp2b, Cyp2c, and Cyp3a using cytochrome P450-specific substrates.
|
74 |
20736321
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No expression changes were observed for Cyp2e1, Nr1i2, Nr1i3, abcc2, and abcg2.
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75 |
20736325
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Pregnane X receptor and constitutive androstane receptor at the crossroads of drug metabolism and energy metabolism.
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76 |
20736325
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The pregnane X receptor (PXR) and the constitutive androstane receptor (CAR) are two closely related and liver-enriched nuclear hormone receptors originally defined as xenobiotic receptors.
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77 |
20736325
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Pregnane X receptor and constitutive androstane receptor at the crossroads of drug metabolism and energy metabolism.
|
78 |
20736325
|
The pregnane X receptor (PXR) and the constitutive androstane receptor (CAR) are two closely related and liver-enriched nuclear hormone receptors originally defined as xenobiotic receptors.
|