0000000000480360

AUTHOR

Ying Yao

showing 6 related works from this author

Rho protein-mediated changes in the structure of the actin cytoskeleton regulate human inducible NO synthase gene expression ☆ ☆This article contains…

2003

Rho proteins (Rho, Rac, Cdc 42) are known to control the organization of the actin cytoskeleton as well as gene expression. Inhibition of Rho proteins by Clostridium difficile toxin B disrupted the F-actin cytoskeleton and enhanced cytokine-induced inducible nitric oxide synthase (iNOS) expression in human epithelial cells. Also specific inhibition by Y-27632 of p160ROCK, which mediates Rho effects on actin fibers, caused a disruption of the actin cytoskeleton and a superinduction of cytokine-induced iNOS expression. Accordingly, direct disruption of the actin cytoskeleton by cytochalasin D, latrunculin B, or jasplakinolide enhanced cytokine-induced iNOS expression. The transcription factor…

Regulation of gene expressionActin remodelingClostridium difficile toxin Bmacromolecular substancesCell BiologyBiologyActin cytoskeletonMolecular biologyCell biologyProfilinSerum response factorbiology.proteinMDia1CytoskeletonExperimental Cell Research
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Reciprocal regulation of endothelial nitric-oxide synthase and NADPH oxidase by betulinic acid in human endothelial cells.

2007

Nitric oxide (NO) produced by endothelial NO synthase (eNOS) is a protective principle in the vasculature. Many cardiovascular diseases are associated with reduced NO bioactivity and eNOS uncoupling due to oxidative stress. Compounds that reverse eNOS uncoupling and increase eNOS expression are of therapeutic interest. Zizyphi Spinosi semen (ZSS) is one of the most widely used traditional Chinese herbs with protective effects on the cardiovascular system. In human umbilical vein endothelial cells (HUVEC) and HUVEC-derived EA.hy 926 cells, an extract of ZSS increased eNOS promoter activity, eNOS mRNA and protein expression, and NO production in a concentration- and time-dependent manner. Maj…

Nitric Oxide Synthase Type IIIBlotting Westernmedicine.disease_causeNitric OxideGene Expression Regulation EnzymologicNitric oxidechemistry.chemical_compoundEnosBetulinic acidmedicineHumansNitric Oxide DonorsEnzyme InhibitorsBetulinic AcidCyclic GMPCells CulturedPharmacologyNADPH oxidaseBetulinbiologyDose-Response Relationship DrugReverse Transcriptase Polymerase Chain ReactionNOX4AcetophenonesEndothelial CellsNADPH OxidasesZiziphusSaponinsbiology.organism_classificationTriterpenesNG-Nitroarginine Methyl EsterchemistryBiochemistryNADPH Oxidase 4biology.proteinMolecular MedicineSpermineP22phoxPentacyclic TriterpenesReactive Oxygen SpeciesOxidative stressDrugs Chinese HerbalThe Journal of pharmacology and experimental therapeutics
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Flavonoids from Artichoke (Cynara scolymus L.) Up-Regulate Endothelial-Type Nitric-Oxide Synthase Gene Expression in Human Endothelial Cells

2004

Nitric oxide (NO) produced by endothelial nitric-oxide synthase (eNOS) represents an antithrombotic and anti-atherosclerotic principle in the vasculature. Hence, an enhanced expression of eNOS in response to pharmacological interventions could provide protection against cardiovascular diseases. In EA.hy 926 cells, a cell line derived from human umbilical vein endothelial cells (HUVECs), an artichoke leaf extract (ALE) increased the activity of the human eNOS promoter (determined by luciferase reporter gene assay). An organic subfraction from ALE was more potent in this respect than the crude extract, whereas an aqueous subfraction of ALE was without effect. ALE and the organic subfraction t…

MaleNitric Oxide Synthase Type IIIRNA StabilityQuinic AcidGene ExpressionCynarosideBiologyUmbilical veinNitric oxideRats Sprague-Dawleychemistry.chemical_compoundEnosCynara scolymusGene expressionAnimalsHumansRNA MessengerPromoter Regions GeneticAortaCells CulturedFlavonoidsPharmacologybiology.organism_classificationMolecular biologyRatsUp-RegulationVasomotor SystemNitric oxide synthasechemistryBiochemistryCell culturebiology.proteinMolecular MedicineEndothelium VascularNitric Oxide SynthaseLuteolinJournal of Pharmacology and Experimental Therapeutics
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Sporogen, S14-95, and S-curvularin, three inhibitors of human inducible nitric-oxide synthase expression isolated from fungi.

2003

The induction of human inducible nitric-oxide synthase (iNOS) expression depends (among other factors) on activation of the signal transducer and activator of transcription 1 (STAT1) pathway. Therefore, the STAT1 pathway may be an appropriate target for the development of inhibitors of iNOS expression. HeLa S3 cells transiently transfected with a gamma-activated site (GAS)/interferon-stimulated response element-driven reporter gene construct were used as the primary screening system. Using this system, three novel inhibitors of interferon-gamma-dependent gene expression, namely, sporogen, S14-95, and S-curvularin, were isolated from different Penicillium species. These three compounds also …

Nitric Oxide Synthase Type IIINitric Oxide Synthase Type IIGene expressionHumansRNA MessengerEnzyme InhibitorsPromoter Regions GeneticCells CulturedNitritesPharmacologyRegulation of gene expressionReporter genebiologyPenicilliumNitric Oxide Synthase Type IIITransfectionCurvularinMolecular biologyNitric oxide synthaseDNA-Binding ProteinsSTAT1 Transcription FactorGene Expression Regulationbiology.proteinSTAT proteinTrans-ActivatorsMolecular MedicineEpoxy CompoundsZearalenoneNitric Oxide SynthaseCell DivisionMolecular pharmacology
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Ursolic acid from the Chinese herb Danshen (Salvia miltiorrhiza L.) upregulates eNOS and downregulates Nox4 expression in human endothelial cells

2007

Danshen, the dried root of Salvia miltiorrhiza Bunge (Lamiaceae), is one of the most commonly used traditional Chinese medicines for cardiovascular indications. In EA.hy 926 cells, a cell line derived from human umbilical vein endothelial cells (HUVEC), an aqueous extract of danshen, and also a methanol extract of the plant, increased eNOS promoter activity, eNOS mRNA and protein expression, as well as endothelial NO production. A dichloromethane extract, in contrast, did not change eNOS gene expression. Thus, the active danshen constituent(s) responsible for eNOS upregulation is (are) hydrophilic and/or alcohol-soluble. One such compound is ursolic acid that significantly increased eNOS ex…

Nitric Oxide Synthase Type IIIEndotheliumSalvia miltiorrhizaBiologyPharmacologySalvia miltiorrhizaGene Expression Regulation Enzymologicchemistry.chemical_compoundRibonucleasesUrsolic acidDownregulation and upregulationGenes ReporterEnosmedicineHumansRNA MessengerCells CulturedNADPH oxidasePlant ExtractsMethanolNADPH OxidasesNOX4biology.organism_classificationTriterpenesNitric oxide synthaseOxidative Stressmedicine.anatomical_structureBiochemistrychemistryNADPH Oxidase 4Alcoholsbiology.proteinEndothelium VascularCardiology and Cardiovascular MedicineAtherosclerosis
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Midostaurin upregulates eNOS gene expression and preserves eNOS function in the microcirculation of the mouse

2005

Nitric oxide (NO) derived from endothelial NO synthase (eNOS) is a powerful vasodilator and possesses vasoprotective effects. Therefore, augmentation of eNOS expression and -activity by pharmacological means could provide protection against cardiovascular disease. However, this concept has been questioned recently, because in several disease models, eNOS upregulation was associated with a dysfunctional enzyme (referred to as eNOS uncoupling). In contrast, the present study demonstrates that an eNOS gene expression-enhancing compound with additional protein kinase C (PKC) inhibitory properties can upregulate eNOS while preserving its enzymatic function. Apolipoprotein E-knockout mice were tr…

MaleCancer ResearchNitric Oxide Synthase Type IIIPhysiologyClinical BiochemistryNitric Oxide Synthase Type IIBiologyPharmacologyBiochemistryNitric oxideMicechemistry.chemical_compoundApolipoproteins EEnosmedicineAnimalsStaurosporineRNA MessengerMidostaurinAortaNitritesProtein kinase CMice KnockoutNitratesMicrocirculationStaurosporinebiology.organism_classificationVasoprotectiveVasodilationNitric oxide synthaseBiochemistrychemistryEnzyme Inductionbiology.proteinNitric Oxide SynthaseReactive Oxygen SpeciesIntravital microscopymedicine.drugNitric Oxide
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