Search results for "KB Cells"

showing 3 items of 3 documents

Cissampeloflavone, a chalcone-flavone dimer from Cissampelos pareira

2003

From the aerial parts of Cissampelos pareira L. (Menispermaceae), a chalcone-flavone dimer has been isolated which, mainly from NMR spectroscopic and MS data, was proved to be 2-(4-hydroxy-3-methoxyphenyl)-7-(4-methoxyphenyl)-6-(2-hydroxy-4,6-dimethoxybenzoyl)-furano[3,2-g]benzopyran-4-one. This has been assigned the trivial name cissampeloflavone. The compound has good activity against Trypanosoma cruzi and T. brucei rhodesiense and has a low toxicity to the human KB cell line.

ChalconeMagnetic Resonance Spectroscopymedicine.drug_classStereochemistryDimerAntiprotozoal AgentsPlant ScienceHorticultureBiologyPharmacognosyBiochemistryFlavonesKB Cellschemistry.chemical_compoundChalconemedicineAnimalsHumansMenispermaceaeTrypanosoma cruziMolecular BiologyFlavonoidschemistry.chemical_classificationEukaryotaGeneral MedicineCissampelosPlant Components Aerialbiology.organism_classificationAntineoplastic Agents PhytogenicchemistryCissampelos pareiraAntiprotozoalDimerizationPhytochemistry
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Inhibition of the epidermal growth factor receptor tyrosine kinase activity by leflunomide.

1993

AbstractThe active metabolite of leflunomide, A77 1726 inhibits the proliferation of a variety of mammalian cell lines in culture. Epidermal growth factor (EGF)-dependent proliferation is inhibited by A77 1726 at an effective dose of 30–40 μM. A77 1726 appears to directly inhibit the EGF receptor tyrosine-specific kinase activity both in intact cells and purified EGF receptors at the same effective dose. These data suggest that leflunomide inhibits cellular proliferation by the inhibition of tyrosine-specific kinase activities.

MaleToluidinesmedicine.medical_treatmentBiophysicsHydroxybutyratesBiochemistryKB CellsCell LineHuman foreskin fibroblast cellStructural BiologyEpidermal growth factorNitrilesGeneticsmedicineTumor Cells CulturedAnimalsHumansEpidermal growth factor receptorKinase activityPhosphorylationReceptorMolecular BiologyCells CulturedSkinAniline CompoundsbiologyCell growthKinaseEpidermal growth factor receptorGrowth factorAnti-Inflammatory Agents Non-SteroidalCell BiologyIsoxazolesFibroblastsTyrosine-specific kinaseCell biologyErbB ReceptorsBiochemistryCrotonatesbiology.proteinCarcinoma Squamous CellPlatelet-derived growth factor receptorLeflunomideFEBS letters
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Inhibiting proliferation in KB cancer cells by RNA interference-mediated knockdown of nicotinamide N-methyltransferase expression.

2011

The enzyme Nicotinamide N-methyltransferase (NNMT) catalyzes the methylation of nicotinamide and other pyridines, playing a pivotal role in the biotransformation and detoxification of many drugs and xenobiotic compounds. Several tumours have been associated with abnormal NNMT expression, however its role in tumour development remains largely unknown. In this study we investigated expression levels of Nicotinamide N-methyltransferase in a cancer cell line and we evaluated the effect of shRNA-mediated silencing of NNMT on cell proliferation. Cancer cells were examined for NNMT expression by semiquantitative RT-PCR and Western blot analysis. A HPLC-based catalytic assay was performed to asses…

PharmacologyGene knockdownCell growthReverse Transcriptase Polymerase Chain ReactionImmunologyBlotting WesternNNMTNicotinamide N-methyltransferaseTransfectionBiologytumor cellMolecular biologyKB CellsSmall hairpin RNABlotGene expressionCancer cellsilencingNicotinamide N-Methyltransferasegene expressionImmunology and AllergyHumanscell growthRNA InterferenceCell Proliferation
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