Search results for "oligonucleotide"

showing 10 items of 418 documents

CHK1-targeted therapy to deplete DNA replication-stressed, p53-deficient, hyperdiploid colorectal cancer stem cells.

2017

ObjectiveCancer stem cells (CSCs) are responsible for tumour formation and spreading, and their targeting is required for tumour eradication. There are limited therapeutic options for advanced colorectal cancer (CRC), particularly for tumours carrying RAS-activating mutations. The aim of this study was to identify novel CSC-targeting strategies.DesignTo discover potential therapeutics to be clinically investigated as single agent, we performed a screening with a panel of FDA-approved or investigational drugs on primary CRC cells enriched for CSCs (CRC-SCs) isolated from 27 patients. Candidate predictive biomarkers of efficacy were identified by integrating genomic, reverse-phase protein mic…

0301 basic medicinep53DNA ReplicationCELL CYCLE CONTROLDNA damageColorectal cancerColonmedicine.medical_treatmentAntineoplastic AgentsBiologyBioinformaticsmedicine.disease_causeDNA DAMAGETargeted therapy03 medical and health sciencesCancer stem cellCell Line TumormedicineHumansCHEK11506DRUG DEVELOPMENTOligonucleotide Array Sequence AnalysisMutationCOLORECTAL CANCERSettore MED/06 - ONCOLOGIA MEDICAGastroenterologyCHEMOTHERAPYmedicine.diseaseImmunohistochemistryPrexasertib030104 developmental biologyPyrazinesCheckpoint Kinase 1MutationCancer researchNeoplastic Stem CellsPyrazolesStem cellTumor Suppressor Protein p53Colorectal NeoplasmsGut
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Safety and immunomodulatory effects of three probiotic strains isolated from the feces of breast-fed infants in healthy adults: SETOPROB study.

2013

We previously described the isolation and characterization of three probiotic strains from the feces of exclusively breast-fed newborn infants: Lactobacillus paracasei CNCM I-4034, Bifidobacterium breve CNCM I-4035 and Lactobacillus rhamnosus CNCM I-4036. These strains were shown to adhere to intestinal mucus in vitro, to be sensitive to antibiotics and to resist biliary salts and low pH. In the present study, a multicenter, randomized, double-blind, placebo-controlled trial with 100 healthy volunteers in three Spanish cities was carried out to evaluate the tolerance, safety, gut colonization and immunomodulatory effects of these three probiotics. Volunteers underwent a 15-day washout perio…

ARN Bacterianoved/biology.organism_classification_rank.speciesPhysiologylcsh:Medicine:Phenomena and Processes::Biological Phenomena::Ecological and Environmental Phenomena::Environment::Ecosystem::Biodiversity::Biota::Microbiota [Medical Subject Headings]law.inventionFecesProbioticAntibioticslawLactobacillus:Phenomena and Processes::Physiological Phenomena::Nutritional Physiological Phenomena::Child Nutritional Physiological Phenomena::Infant Nutritional Physiological Phenomena::Breast Feeding [Medical Subject Headings]lcsh:Science:Chemicals and Drugs::Nucleic Acids Nucleotides and Nucleosides::Nucleic Acids::RNA::RNA Bacterial [Medical Subject Headings]BifidobacteriumMultidisciplinaryBifidobacterium brevebiologyLacticaseibacillus rhamnosusMicrobiotaHibridación in SituInterleukin-10:Organisms::Bacteria::Gram-Positive Bacteria::Lactobacillales::Lactobacillaceae::Lactobacillus [Medical Subject Headings]Breast FeedingBloodCytokinesFemaleResearch ArticleAdult:Anatomy::Fluids and Secretions::Feces [Medical Subject Headings]Lactobacillus paracasei:Organisms::Bacteria::Endospore-Forming Bacteria::Gram-Positive Endospore-Forming Bacteria::Gram-Positive Endospore-Forming Rods::Clostridium::Clostridium difficile [Medical Subject Headings]Microbiology:Chemicals and Drugs::Nucleic Acids Nucleotides and Nucleosides::Nucleic Acids::Nucleic Acid Probes::Oligonucleotide Probes [Medical Subject Headings]Double-Blind MethodLactobacillus rhamnosusHumansImmunologic Factors:Analytical Diagnostic and Therapeutic Techniques and Equipment::Diagnosis::Diagnostic Techniques and Procedures::Clinical Laboratory Techniques::Cytological Techniques::Histocytological Preparation Techniques::Staining and Labeling::In Situ Hybridization [Medical Subject Headings]FecesSafety studiesved/biologyProbioticslcsh:RClostridium difficile:Organisms::Bacteria::Gram-Positive Bacteria::Actinobacteria::Bifidobacterium [Medical Subject Headings]biology.organism_classificationImmunoglobulin ALactobacilluslcsh:QInterleukin-4BifidobacteriumBreast feedingSondas de OligonucleótidosPLoS ONE
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Selective downregulation of the MDR1 gene product in Caco-2 cells by stable transfection to prove its relevance in secretory drug transport.

2005

Considerable interest is focused on overcoming multidrug resistance (MDR) in cancer chemotherapy. The in vitro experiments to characterize P-glycoprotein's (P-gp) function and to decrease its effects have led to a variety of strategies such as addition of competitors or supplementation of the medium with oligonucleotides complementary to the 5'-end of the MDR1-mRNA. For the Caco-2 cell line, an in vitro model for absorption screening, expressing multiple transporters including P-gp, which pumps substances back into the apical solution, P-gp activity might mask other relevant transport proteins' activity. The objective of the present study was to construct a Caco-2 subline with reduced P-gp …

ATP Binding Cassette Transporter Subfamily BTime FactorsPharmaceutical ScienceDown-RegulationBiologyTransfectionPermeabilityPropanolaminesDownregulation and upregulationDrug DiscoveryHumansNorthern blotOligonucleotideReverse Transcriptase Polymerase Chain ReactionElectroporationBiological TransportTransfectionFlow CytometryMolecular biologyIn vitroTransport proteinClone CellsMutagenesis InsertionalVerapamilCell cultureMolecular MedicineCaco-2 CellsGenes MDRMolecular pharmaceutics
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CAF-like state in primary skin fibroblasts with constitutional BRCA1 epimutation sheds new light on tumor suppressor deficiency-related changes in he…

2016

Constitutive epimutations of tumor suppressor genes are increasingly considered as cancer predisposing factors equally to sequence mutations. In light of the emerging role of the microenvironment for cancer predisposition, initiation, and progression, we aimed to characterize the consequences of a BRCA1 epimutation in cells of mesenchymal origin. We performed a comprehensive molecular and cellular comparison of primary dermal fibroblasts taken from a monozygous twin pair discordant for recurrent cancers and BRCA1 epimutation, whose exceptional clinical case we previously reported in this journal. Comparative transcriptome analysis identified differential expression of extracellular matrix-r…

Adult0301 basic medicineCancer ResearchTwinsHaploinsufficiencyKetone BodiesExtracellular matrixTranscriptome03 medical and health sciencesCell Line TumormedicineHumansGenes Tumor SuppressorMolecular BiologyPDPNCells CulturedOligonucleotide Array Sequence AnalysisSkinExtracellular Matrix ProteinsbiologyBRCA1 ProteinCell growthGenes HomeoboxCancerDNA MethylationFibroblastsmedicine.diseaseGene Expression Regulation Neoplastic030104 developmental biologyCulture Media ConditionedMutationDNA methylationImmunologyCancer researchbiology.proteinCytokinesCancer-Associated FibroblastsFemaleNeoplasm Recurrence LocalACTA2TranscriptomeResearch PaperEpigenetics
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iGEMS: an integrated model for identification of alternative exon usage events.

2016

Abstract DNA microarrays and RNAseq are complementary methods for studying RNA molecules. Current computational methods to determine alternative exon usage (AEU) using such data require impractical visual inspection and still yield high false-positive rates. Integrated Gene and Exon Model of Splicing (iGEMS) adapts a gene-level residuals model with a gene size adjusted false discovery rate and exon-level analysis to circumvent these limitations. iGEMS was applied to two new DNA microarray datasets, including the high coverage Human Transcriptome Arrays 2.0 and performance was validated using RT-qPCR. First, AEU was studied in adipocytes treated with (n = 9) or without (n = 8) the anti-diabe…

AdultAlternative SplicingMiceGene Expression ProfilingAnimalsComputational BiologyHumansMethods OnlineExonsGenomicsTranscriptomeOligonucleotide Array Sequence AnalysisNucleic acids research
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The transcription factor ZEB1 (deltaEF1) promotes tumour cell dedifferentiation by repressing master regulators of epithelial polarity.

2007

Epithelial to mesenchymal transition (EMT) is implicated in the progression of primary tumours towards metastasis and is likely caused by a pathological activation of transcription factors regulating EMT in embryonic development. To analyse EMT-causing pathways in tumouri-genesis, we identified transcriptional targets of the E-cadherin repressor ZEB1 in invasive human cancer cells. We show that ZEB1 repressed multiple key determinants of epithelial differentiation and cell–cell adhesion, including the cell polarity genes Crumbs3, HUGL2 and Pals1-associated tight junction protein. ZEB1 associated with their endogenous promoters in vivo, and strongly repressed promotor activities in reporter …

AdultCancer ResearchChromatin ImmunoprecipitationCellular differentiationImmunoblottingDown-RegulationBreast NeoplasmsBiologymedicine.disease_causeEpitheliumArticleCell polarityGeneticsmedicineTumor Cells CulturedHumansNeoplasm InvasivenessEpithelial–mesenchymal transitionCell adhesionPromoter Regions GeneticMolecular BiologyTranscription factorEpithelial polarityAgedOligonucleotide Array Sequence AnalysisHomeodomain ProteinsMembrane GlycoproteinsReverse Transcriptase Polymerase Chain ReactionGene Expression ProfilingCell PolarityMembrane ProteinsZinc Finger E-box-Binding Homeobox 1Cell DifferentiationMiddle AgedCadherinsCytoskeletal ProteinsMicroscopy FluorescenceCancer cellColonic NeoplasmsCancer researchDisease ProgressionSnail Family Transcription FactorsCarcinogenesisNucleoside-Phosphate KinaseTranscription FactorsOncogene
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CD40 activation in human pancreatic islets and ductal cells.

2008

Aims/hypothesis: CD40 expression on non-haematopoietic cells is linked to inflammation. We previously reported that CD40 is expressed on isolated human and non-human primate islets and its activation results in secretion of IL-8, macrophage inflammatory protein 1-beta (MIP-1β) and monocyte chemoattractant protein-1 (MCP-1) through nuclear factor-κB and extracellularly regulated kinases 1/2 pathways. The objective of this study was to identify the pattern of gene expression, and to study viability and functionality affected by CD40-CD40 ligand (CD40L) interaction in human islets. Furthermore, we have studied the CD40-mediated cytokine/chemokine profile in pancreatic ductal cells, as they are…

AdultChemokinemedicine.medical_specialtyDuctal cellsCell SurvivalEndocrinology Diabetes and Metabolismmedicine.medical_treatmentChemokine CXCL1CD40 Chemokines Cytokines Ductal cells Inflammation Insulin Islets of Langerhans Microarray Quantitative RT-PCRCD40 LigandEnzyme-Linked Immunosorbent AssayIslets of LangerhansYoung AdultInternal medicineInternal MedicinemedicineHumansCD40 AntigensMacrophage inflammatory proteinOligonucleotide Array Sequence AnalysisCD40biologySettore BIO/16 - Anatomia UmanaReverse Transcriptase Polymerase Chain ReactionPancreatic isletsPancreatic DuctsMiddle AgedFlow CytometryMolecular biologyCXCL1CXCL2Endocrinologymedicine.anatomical_structureCytokinebiology.proteinCytokinesChemokinesDiabetologia
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A 588-gene microarray analysis of the peripheral blood mononuclear cells of spondyloarthropathy patients

2002

OBJECTIVES: To identify genes which are more highly expressed in the peripheral blood mononuclear cells (PBMC) of patients with spondyloarthropathy (SpA), rheumatoid arthritis (RA) and psoriatic arthritis (PsA), in comparison to normal subjects. METHODS: A 588-gene microarray was used as a screening tool to select a panel of such genes from PBMC of these subjects and of normal subjects. Results were then validated by reverse transcription-polymerase chain reaction (RT-PCR). RESULTS: The following genes were more highly expressed in arthritis patients than in normal subjects: macrophage differentiation marker MNDA (myeloid nuclear differentiation antigen), MRP8 and MRP14 (migratory inhibitor…

AdultGenetic MarkersMaleCCR1Receptors CXCR4AdolescentSpondyloarthropathyArthritisPeripheral blood mononuclear cellArthritis RheumatoidPsoriatic arthritisRheumatologymedicineHumansSpondylitis AnkylosingPharmacology (medical)AgedOligonucleotide Array Sequence AnalysisReverse Transcriptase Polymerase Chain Reactionbusiness.industryJanus kinase 3Arthritis PsoriaticSynovial MembraneMNDAInterleukinDNAMiddle Agedmedicine.diseaseAntigens DifferentiationChemokine CXCL12ImmunologyLeukocytes MononuclearFemalebusinessChemokines CXCRheumatology (Oxford, England)
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Endometrial gene expression analysis at the time of embryo implantation in women with unexplained infertility

2009

Successful embryo implantation depends on the quality of the embryo, as well as on the receptivity of the endometrium. The aim of this study was to investigate the endometrial gene expression profile in women with unexplained infertility in comparison with fertile controls at the time of embryo implantation in order to find potential predictive markers of uterine receptivity and to identify the molecular mechanisms of infertility. High-density oligonucleotide gene arrays, comprising 44 000 gene targets, were used to define the endometrial gene expression profile in infertile (n = 4) and fertile (n = 5) women during the mid-secretory phase (day LH + 7). Microarray results were validated usin…

AdultInfertilityEmbryologymedicine.medical_specialtyMicroarrayBiologyEndometriumAndrologyEndometriumPregnancyInternal medicineGeneticsmedicineHumansEmbryo ImplantationMolecular BiologyCellular localizationOligonucleotide Array Sequence AnalysisUnexplained infertilityRegulation of gene expressionPrincipal Component AnalysisReverse Transcriptase Polymerase Chain ReactionGene Expression ProfilingObstetrics and GynecologyCell Biologymedicine.diseaseGene expression profilingmedicine.anatomical_structureEndocrinologyGene Expression RegulationReproductive MedicineIn uteroFemaleInfertility FemaleDevelopmental BiologyMolecular Human Reproduction
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Endometrial gene expression in the window of implantation is altered in obese women especially in association with polycystic ovary syndrome

2010

Objective To determine whether luteal phase endometrial transcriptome is altered in obese women during the window of implantation (WOI), considering the presence of infertility, fat distribution and association with polycystic ovary syndrome (PCOS). Design Prospective study. Setting University-affiliated infertility clinic, between May 2007 and March 2009. Patient(s) One control group of women with normal weight (n = 4), and four study groups of obese women (n = 6 each one) according to the association with infertility, PCOS, and ovarian stimulation. Intervention(s) The endometrium was biopsied 7 days after LH surge or hCG administration in 28 women. Main Outcome Measure(s) Endometrial gene…

AdultInfertilitymedicine.medical_specialtyTime FactorsAdolescentMicroarrayBiopsyLuteal PhaseLuteal phasePeptide receptor activityBiologyEndometriumEndometriumYoung AdultOvulation InductionInternal medicinemedicineCluster AnalysisHumansEmbryo ImplantationObesityProspective StudiesOligonucleotide Array Sequence AnalysisUnexplained infertilityPrincipal Component AnalysisGene Expression ProfilingObstetrics and GynecologyFertility Agents Femalemedicine.diseasePolycystic ovarymedicine.anatomical_structureEndocrinologyGene Expression RegulationReproductive MedicineSpainCase-Control StudiesFemaleTransmembrane transporter activityInfertility FemalePolycystic Ovary SyndromeFertility and Sterility
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