Search results for "expression"

showing 10 items of 5168 documents

Genome and phenotype microarray analyses of rhodococcus sp. BCP1 and rhodococcus opacus R7: Genetic determinants and metabolic abilities with environ…

2015

In this paper comparative genome and phenotype microarray analyses of Rhodococcus sp. BCP1 and Rhodococcus opacus R7 were performed. Rhodococcus sp. BCP1 was selected for its ability to grow on short-chain n-alkanes and R. opacus R7 was isolated for its ability to grow on naphthalene and on o-xylene. Results of genome comparison, includ- ing BCP1, R7, along with other Rhodococcus reference strains, showed that at least 30% of the genome of each strain presented unique sequences and only 50% of the predicted proteome was shared. To associate genomic features with metabolic capabilities of BCP1 and R7 strains, hundreds of different growth conditions were tested through Phenotype Microarray, b…

AROMATIC-COMPOUNDS; GENUS RHODOCOCCUS; HIGH-THROUGHPUT; PATHWAY; DEGRADATION; BIODEGRADATION; EQUI; PERFORMANCE; CATABOLISMGenomics RhodococcusGene predictionBacterial Proteinlcsh:MedicineBiologyGenomeXenobioticsRhodococcus opacusBacterial ProteinsRhodococcuslcsh:ScienceGenePhylogenyGeneticsComparative genomicsMultidisciplinarylcsh:RMetabolic Networks and PathwayPhenotype microarrayHigh-Throughput Nucleotide SequencingRhodococcus sp. BCP1 Rhodococcus opacus R7Genome analysisGene Expression Regulation BacterialGenomicsSequence Analysis DNAbiology.organism_classificationBIO/19 - MICROBIOLOGIA GENERALEBiodegradation EnvironmentalPhenotypeProteomeGenomiclcsh:QPhenotype MicroarrayRhodococcusMetabolic Networks and PathwaysRhodococcuhydrocarbon degradationResearch Article
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Collateral sensitivity of drug-resistant ABCB5- and mutation-activated EGFR overexpressing cells towards resveratrol due to modulation of SIRT1 expre…

2019

Abstract Background In the drug discovery field, natural products deemed a precious source of novel lead compounds. They have the ability to bypass or overcome multidrug resistance (MDR) in cancer cells. Purpose In this study, the natural polyphenolic stilbene resveratrol (RES) has been studied for its cytotoxic activity toward MDR cancer cells. Methods Resazurin assay was used to investigate the cytotoxicity of RES not only against a panel of drug-resistant cancer cells overexpressing P-glycoprotein/ABCB1, BCRP/ABCG2, ABCB5 (ATP-binding cassette transporters), but also mutation-activated EGFR. The assessment of proteins expression was done by Western blot analysis. COMPARE and hierarchical…

ATP Binding Cassette Transporter Subfamily BAbcg2Pharmaceutical ScienceResveratrol03 medical and health scienceschemistry.chemical_compound0302 clinical medicineSirtuin 1Cell Line TumorDrug DiscoveryCytotoxic T cellHumansATP Binding Cassette Transporter Subfamily B Member 1CytotoxicityPromoter Regions GeneticTranscription factor030304 developmental biologyPharmacology0303 health sciencesbiologySirtuin 1ChemistryNF-kappa BAntineoplastic Agents PhytogenicDrug Resistance MultipleMultiple drug resistanceErbB ReceptorsGene Expression Regulation NeoplasticComplementary and alternative medicineDrug Resistance NeoplasmResveratrol030220 oncology & carcinogenesisCancer cellMutationbiology.proteinCancer researchMolecular MedicinePhytomedicine : international journal of phytotherapy and phytopharmacology
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Cytotoxicity of 35 medicinal plants from Sudan towards sensitive and multidrug-resistant cancer cells

2015

Abstract Background Cancer is a complex disease with multiple genetic and epigenetic alterations. Since decades, the hallmark of cancer therapy is chemotherapy. Cytotoxic drugs erase rapidly dividing cells without sufficient differentiation between normal and cancerous cells resulting in severe side effects in normal tissues. Recently, strategies for cancer treatment focused on targeting specific proteins involved in tumor growth and progression. The present study was designed to investigate the cytotoxicity of 65 crude extracts from 35 Sudanese medicinal plants towards various cancer cell lines expressing molecular mechanisms of resistance towards classical chemotherapeutics (two ATP-bindi…

ATP Binding Cassette Transporter Subfamily BCytoskeleton organizationCell SurvivalDNA repairBiologyPharmacologySudanSesquiterpenes GuaianeImmune systemCell Line TumorOxazinesDrug DiscoveryHumansATP Binding Cassette Transporter Subfamily B Member 1EpigeneticsCytotoxicityPharmacologyPlants MedicinalComputational BiologyAntineoplastic Agents PhytogenicDrug Resistance MultipleGene expression profilingXanthenesDrug Resistance NeoplasmPharmacogeneticsCell cultureCancer cellCancer researchIndicators and ReagentsTumor Suppressor Protein p53SesquiterpenesJournal of Ethnopharmacology
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The lignan, (-)-sesamin reveals cytotoxicity toward cancer cells: pharmacogenomic determination of genes associated with sensitivity or resistance.

2013

(-)-Sesamin is a lignan present in sesam oil and a number of medicinal plants. It exerts various pharmacological effects, such as prevention of hyperlipidemia, hypertension, and carcinogenesis. Moreover, (-)-sesamin has chemopreventive and anticancer activity in vitro and in vivo. Multidrug resistance (MDR) of tumors leads to fatal treatment outcome in many patients and novel drugs able to kill multidrug-resistant cells are urgently needed. P-glycoprotein (MDR1/ABCB1) is the best known ATP-binding cassette (ABC) drug transporter mediating MDR. ABCB5 is a close relative to ABCB1, which also mediates MDR. We found that the mRNA expressions of ABCB1 and ABCB5 were not related to the 50% inhibi…

ATP Binding Cassette Transporter Subfamily BPharmaceutical ScienceATP-binding cassette transporterDioxolesBiologyPharmacologymedicine.disease_causeLignanschemistry.chemical_compoundSesaminCell Line TumorNeoplasmsDrug DiscoverymedicineCluster AnalysisHumansATP Binding Cassette Transporter Subfamily B Member 1GenePharmacologyPlant ExtractsGene Expression ProfilingABCB5Multiple drug resistanceMitochondrial respiratory chainHEK293 CellsComplementary and alternative medicinechemistryDrug Resistance NeoplasmCancer cellMolecular MedicineDrug Screening Assays AntitumorCarcinogenesisPhytotherapyPhytomedicine : international journal of phytotherapy and phytopharmacology
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Pharmacogenomic Characterization of Cytotoxic Compounds from Salvia officinalis in Cancer Cells.

2015

Salvia officinalis is used as a dietary supplement with diverse medicinal activity (e.g. antidiabetic and antiatherosclerotic effects). The plant also exerts profound cytotoxicity toward cancer cells. Here, we investigated possible modes of action to explain its activity toward drug-resistant tumor cells. Log10IC50 values of two constituents of S. officinalis (ursolic acid, pomolic acid) were correlated to the expression of ATP-binding cassette (ABC) transporters (P-glycoprotein/ABCB1/MDR1, MRP1/ABCC1, BCRP/ABCG2) and epidermal growth factor receptor (EGFR) or mutations in RAS oncogenes and the tumor suppressor gene TP53 of the NCI panel of cell lines. Gene expression profiles predicting se…

ATP Binding Cassette Transporter Subfamily BTumor suppressor geneLeupeptinsPharmaceutical ScienceATP-binding cassette transporterBreast NeoplasmsBiologymedicine.disease_causeAnalytical Chemistrychemistry.chemical_compoundfoodUrsolic acidDrug DiscoveryGene expressionmedicineHumansOleanolic AcidSalvia officinalisPharmacologyMutationPlants MedicinalMolecular StructureOrganic ChemistrySalvia officinalisNF-kappa BGenes erbB-1Antineoplastic Agents Phytogenicfood.foodTriterpenesComplementary and alternative medicinechemistryBiochemistryDrug Resistance NeoplasmPharmacogeneticsCancer cellMolecular MedicineATP-Binding Cassette TransportersSignal transductionSignal TransductionJournal of natural products
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CitA/CitB Two-Component System Regulating Citrate Fermentation in Escherichia coli and Its Relation to the DcuS/DcuR System In Vivo

2011

ABSTRACT Citrate fermentation by Escherichia coli requires the function of the citrate/succinate antiporter CitT ( citT gene) and of citrate lyase ( citCDEFXG genes). Earlier experiments suggested that the two-component system CitA/CitB, consisting of the membrane-bound sensor kinase CitA and the response regulator CitB, stimulates the expression of the genes in the presence of citrate, similarly to CitA/CitB of Klebsiella pneumoniae . In this study, the expression of a chromosomal citC-lacZ gene fusion was shown to depend on CitA/CitB and citrate. CitA/CitB is related to the DcuS/DcuR two-component system which induces the expression of genes for fumarate respiration in response to C 4 -di…

ATP citrate lyaseOperonBiologymedicine.disease_causeMicrobiologyCitric AcidFusion geneGene clusterEscherichia colimedicinePromoter Regions GeneticMolecular BiologyEscherichia coliEscherichia coli ProteinsPromoterGene Expression Regulation BacterialArticlesMolecular biologyTwo-component regulatory systemDNA-Binding ProteinsResponse regulatorBiochemistryFermentationProtein KinasesProtein BindingTranscription FactorsJournal of Bacteriology
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Genetic organization of the citCDEF locus and identification of mae and clyR genes from Leuconostoc mesenteroides.

1999

ABSTRACT In this paper, we describe two open reading frames coding for a NAD-dependent malic enzyme ( mae ) and a putative regulatory protein ( clyR ) found in the upstream region of citCDEFG of Leuconostoc mesenteroides subsp. cremoris 195. The transcriptional analysis of the citrate lyase locus revealed one polycistronic mRNA covering the mae and citCDEF genes. This transcript was detected only on RNA prepared from cells grown in the presence of citrate. Primer extension experiments suggest that clyR and the citrate lyase operon are expressed from a bidirectional A-T-rich promoter region located between mae and clyR.

ATP citrate lyaseTranscription GeneticOperonMolecular Sequence DataMalatesLocus (genetics)Genetics and Molecular BiologyBiologyMicrobiologyPrimer extensionCitric AcidOpen Reading FramesBacterial ProteinsMalate DehydrogenaseMultienzyme ComplexesLeuconostocAmino Acid SequenceMolecular BiologyGeneGeneticsBase SequenceOxo-Acid-LyasesPromoterGene Expression Regulation BacterialSequence Analysis DNAbiology.organism_classificationMolecular biologyLeuconostoc mesenteroidesGenes BacterialSequence AlignmentLeuconostocJournal of bacteriology
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Poly(hydroxyalkanoate) synthase genes in pseudomonads strains, isolation and heterologous expression

2010

ATP synthasebiologySettore AGR/12 - Patologia VegetaleBioengineeringGeneral MedicineIsolation (microbiology)PolyhydroxyalkanoatePseudomonas corrugataApplied Microbiology and BiotechnologyMicrobiologybiology.proteinHeterologous expressionGenePseudomonas mediterraneaNicotiana BentamianaBiotechnology
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Cytotoxicity of cucurbitacin E from Citrullus colocynthis against multidrug-resistant cancer cells

2019

Abstract Background Cucurbitacin E (CuE) is an oxygenated tetracyclic triterpenoid isolated from the fruits of Citrullus colocynthis (L.) Schrad. Purpose This study outlines CuE's cytotoxic activity against drug-resistant tumor cell lines. Three members of ABC transporters superfamily, P-glycoprotein (P-gp), breast cancer resistance protein (BCRP) and ABCB5 were investigated, whose overexpression in tumors is tightly linked to multidrug resistance. Further factors of drug resistance studied were the tumor suppressor TP53 and the epidermal growth factor receptor (EGFR). Methods Cytotoxicity assays (resazurin assays) were used to investigate the activity of Citrullus colocynthis and CuE towar…

Abcg2Drug ResistancePharmaceutical ScienceATP-binding cassette transporterMicroarraySubfamily Gchemistry.chemical_compoundGene Knockout Techniques0302 clinical medicineEpidermal growth factorPhytogenicDrug DiscoveryATP Binding Cassette Transporter Subfamily G Member 2Cancer0303 health sciencesTumorLeukemiabiologyChemistryABCB5TransfectionCell cycleNeoplasm ProteinsGene Expression Regulation NeoplasticErbB ReceptorsMolecular Docking SimulationSubfamily B030220 oncology & carcinogenesisMolecular MedicineCitrullus colocynthiMember 2Member 1ATP Binding Cassette Transporter Subfamily BATP Binding Cassette TransporterAntineoplastic AgentsCell Line03 medical and health sciencesCell Line TumorHumansATP Binding Cassette Transporter Subfamily B Member 1030304 developmental biologyCucurbitacin EPharmacologyNeoplasticTraditional herbal medicineCancer; Citrullus colocynthis; Drug resistance; Microarray; Traditional herbal medicine; ATP Binding Cassette Transporter Subfamily B; ATP Binding Cassette Transporter Subfamily B Member 1; ATP Binding Cassette Transporter Subfamily G Member 2; Antineoplastic Agents Phytogenic; Cell Line Tumor; Citrullus colocynthis; Doxorubicin; Drug Resistance Neoplasm; ErbB Receptors; Gene Expression Regulation Neoplastic; Gene Knockout Techniques; Humans; Leukemia; Molecular Docking Simulation; Neoplasm Proteins; Triterpenes; Tumor Suppressor Protein p53Antineoplastic Agents PhytogenicTriterpenesComplementary and alternative medicineGene Expression RegulationDrug Resistance NeoplasmDoxorubicinCancer cellbiology.proteinCancer researchNeoplasmCitrullus colocynthisTumor Suppressor Protein p53
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Matei Visniec: aproximación a un universo dramático a través de sus animales

2014

Matei Visniec (1956) is an author from Romania, who uses both French and Romanian expression in his plays. The coordinates of his dramatic fictional universe bring together the absurd, the symbolic, the fantastic and the conflicts in the city of men, sometimes with accurate historical and current references. Animals, present onstage in many different ways, are very common in his plays. They constitute a strange wildlife between animal and human, between the real and the fantastic.Their presence in this theatrical universe fits into their symbolic aspect, which defies the imagination by means of what is enigmatic and incomprehensible; but it also falls into their committed side to the extent…

AbsurdismFantastiqueLinguistics and LanguageHistoryLiterature and Literary TheoryAbsurd[SHS.LITT]Humanities and Social Sciences/LiteratureSymbolicabsurdHuman conditionAbsurdeSymboliqueLanguage and Linguistics[SHS.LITT] Humanities and Social Sciences/LiteratureanimalFantasticTheatreTeatre (Gènere literari) S. XX Història i críticaThéâtreThéâtre - 20e siècleEngagementlcsh:French literature - Italian literature - Spanish literature - Portuguese literatureMatei VisniecAnimalfantasticRomanianFictional universecommitment16. Peace & justicelanguage.human_languageExpression (architecture)AestheticsCommitmenttheatrelcsh:PQ1-3999languagesymbolicThe SymbolicSymbolique -- Au théâtreUniverse (mathematics)
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