Search results for " Fluorescence"

showing 10 items of 1097 documents

Genomic and transcriptomic profiling of resistant CEM/ADR-5000 and sensitive CCRF-CEM leukaemia cells for unravelling the full complexity of multi-fa…

2016

AbstractWe systematically characterised multifactorial multidrug resistance (MDR) in CEM/ADR5000 cells, a doxorubicin-resistant sub-line derived from drug-sensitive, parental CCRF-CEM cells developed in vitro. RNA sequencing and network analyses (Ingenuity Pathway Analysis) were performed. Chromosomal aberrations were identified by array-comparative genomic hybridisation (aCGH) and multicolour fluorescence in situ hybridisation (mFISH). Fifteen ATP-binding cassette transporters and numerous new genes were overexpressed in CEM/ADR5000 cells. The basic karyotype in CCRF-CEM cells consisted of 47, XX, der(5)t(5;14) (q35.33;q32.3), del(9) (p14.1), +20. CEM/ADR5000 cells acquired additional aber…

0301 basic medicineATP Binding Cassette Transporter Subfamily BDNA RepairDown-RegulationChromosomal translocationABCC5ArticleTranslocation GeneticTranscriptome03 medical and health sciences0302 clinical medicineATP Binding Cassette Transporter Subfamily G Member 2HumansGeneIn Situ Hybridization FluorescenceChromosome 7 (human)GeneticsComparative Genomic HybridizationGenomeLeukemiaMultidisciplinarybiologySequence Analysis RNAGene Expression ProfilingGenomicsNeoplasm ProteinsMultiple drug resistanceGene expression profiling030104 developmental biologyDrug Resistance Neoplasm030220 oncology & carcinogenesisbiology.proteinTranscriptomeComparative genomic hybridizationScientific Reports
researchProduct

The Amount of Melanin Influences p16 Loss in Spitzoid Melanocytic Lesions: Correlation With CDKN2A Status by FISH and MLPA.

2019

AIMS The risk assessment of spitzoid lesions is one of the most difficult challenges in dermatopathology practice. In this regard, the loss of p16 expression and the homozygous deletion of CDKN2A, have been pointed in the literature as reliable indicators of high risk. However, these findings are poorly reproducible, and the molecular bases underlying the loss of p16 expression remain unclear. We aimed to identify the underlying events causing loss of CDKN2A/p16 in spitzoid tumors. MATERIALS AND METHODS We evaluated the immunohistochemical expression of p16, and the presence of CDKN2A genetic alterations detected through fluorescence in situ hybridization (FISH) and multiplex ligation-depen…

0301 basic medicineAdultMalePathologymedicine.medical_specialtyHistologySkin NeoplasmsPathology and Forensic MedicineMelanin03 medical and health sciencesYoung Adult0302 clinical medicineCDKN2ANevus Epithelioid and Spindle CellmedicineBiomarkers TumorNevusHumansMultiplex ligation-dependent probe amplificationneoplasmsMelanomaCyclin-Dependent Kinase Inhibitor p16In Situ Hybridization FluorescenceMelaninsmedicine.diagnostic_testbusiness.industryMelanomamedicine.diseaseImmunohistochemistryGene Expression Regulation NeoplasticMedical Laboratory Technology030104 developmental biology030220 oncology & carcinogenesisMutationImmunohistochemistryMelanocytesFemaleDermatopathologybusinessMultiplex Polymerase Chain ReactionFluorescence in situ hybridizationApplied immunohistochemistrymolecular morphology : AIMM
researchProduct

Detection of RET rearrangements in papillary thyroid carcinoma using RT-PCR and FISH techniques - A molecular and clinical analysis.

2019

Abstract Introduction Oncogenic BRAF and RAS mutations as well as multiple known (and yet unknown) RET fusion oncogenes comprise the majority of causative molecular alterations in papillary thyroid carcinoma (PTC). Apparently “mutation-negative” PTCs encompass a heterogenous group impeding analysis of prognostic significance of underlying genetics. Material and methods BRAF wild type PTC tissue of 56 patients was analyzed using two established methods: hybrid-specific RT-PCR for the predominant rearrangement RET/PTC1 and fluorescent in situ hybridization (FISH). Clinical features of the cases with and without RET rearrangement were compared (patient age, gender, tumor size, focality, lymph …

0301 basic medicineAdultMaleProto-Oncogene Proteins B-rafmedicine.medical_specialtyendocrine system diseasesIn situ hybridizationThyroid carcinomaIodine Radioisotopes03 medical and health sciences0302 clinical medicinemedicineHumansAvidityOncogene FusionThyroid NeoplasmsLymph nodeIn Situ Hybridization FluorescenceAgedRET/PTC RearrangementGene RearrangementClinical pathologybusiness.industryReverse Transcriptase Polymerase Chain ReactionProto-Oncogene Proteins c-retGeneral MedicineMiddle AgedTumor BurdenReverse transcription polymerase chain reaction030104 developmental biologymedicine.anatomical_structureReal-time polymerase chain reactionOncologyThyroid Cancer Papillary030220 oncology & carcinogenesisCancer researchSurgeryFemaleLymph NodesbusinessEuropean journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology
researchProduct

Preimplantation genetic testing for aneuploidy in patients with partial X monosomy using their own oocytes: is this a suitable indication?

2019

Objective To describe the outcome of preimplantation genetic testing (PGT-A) using their own oocytes in patients with mosaic Turner Syndrome (MTS). The impact of the assisted reproduction technique (ART) performed (PGT-A or oocyte donation) and the type of absence of the X chromosome (total or partial) were considered. Design Retrospective observational multicenter study. Setting University-affiliated private in vitro fertilization center. Patient(s) Fifty-six patients with MTS with whom 65 ovarian stimulation cycles for PGT-A (fluorescence in situ hybridization/arrays-next generation sequencing) were performed. The study included 90 women with MTS and 20 women with pure Turner Syndrome (PT…

0301 basic medicineAdultmedicine.medical_specialtyMonosomyAneuploidyOocyte RetrievalTurner SyndromeFertilization in Vitro03 medical and health sciences0302 clinical medicinePredictive Value of TestsPregnancyTurner syndromemedicineHumansGenetic TestingX chromosomeIn Situ Hybridization FluorescencePreimplantation DiagnosisRetrospective StudiesGynecologyChromosomes Human X030219 obstetrics & reproductive medicinemedicine.diagnostic_testOocyte Donationbusiness.industryObstetrics and GynecologyHigh-Throughput Nucleotide Sequencingmedicine.diseaseAneuploidyConfidence intervalEmbryo transfer030104 developmental biologyFertilityReproductive MedicineSpainInfertilityOocytesFemaleLive birthbusinessFluorescence in situ hybridizationFertility and sterility
researchProduct

DNA demethylation caused By 5-Aza-2'-Deoxycytidine induces mitotic alterations and aneuploidy

2016

Aneuploidy, the unbalanced number of chromosomes in a cell, is considered a prevalent form of genetic instability and is largely acknowledged as a condition implicated in tumorigenesis. Epigenetic alterations like DNA hypomethylation have been correlated with cancer initiation/progression. Furthermore, a growing body of evidence suggests the involvement of epigenome-wide disruption as a cause of global DNA hypomethylation in aneuploidy generation. Here, we report that the DNA hypomethylating drug 5-aza-2′-deoxycytidine (DAC), affects the correct ploidy of nearly diploid HCT-116 human cells by altering the methylation pattern of the chromosomes. Specifically, we show that a DAC-induced reduc…

0301 basic medicineAntimetabolites Antineoplastic5-aza-2'-deoxycytidine (DAC); Aneuploidy; Chromosome methylation pattern; Chromosome Section; DNA demethylation; OncologyBlotting WesternAneuploidyMitosisApoptosisBiologymedicine.disease_causeDecitabineReal-Time Polymerase Chain ReactionChromosome Section03 medical and health scienceschromosome methylation patternChromosome instabilitymedicineTumor Cells CulturedHumansEpigeneticsaneuploidyRNA Messenger5-aza-2′-deoxycytidine (DAC)Cell ProliferationGeneticsChromosome AberrationsPloidiesReverse Transcriptase Polymerase Chain ReactionDNA Methylationmedicine.disease5-aza-2'-deoxycytidine (DAC)Gene Expression Regulation NeoplasticResearch Paper: ChromosomeSettore BIO/18 - Genetica030104 developmental biologyDNA demethylationOncologyMicroscopy FluorescenceDNA methylationColonic NeoplasmsCytogenetic AnalysisCancer researchDNA demethylationAzacitidinePloidyCarcinogenesisDNA hypomethylation
researchProduct

Gene Expression and Apoptosis Levels in Cumulus Cells of Patients with Polymorphisms of FSHR and LHB Undergoing in Vitro Fertilization Program

2017

Background/Aims: FSH receptor (FSHR) Ala307Thr and Asn680Ser and LHβ chain (LHB) Trp28Arg and Ile35Thr polymorphisms affect the response to pharmacological ovarian stimulation with r-FSH in women undergoing assisted reproductive treatment (ART). Here, we evaluated the expression level of selected genes involved in follicle maturation and the possible onset of apoptosis in cumulus cells of patients with single and double FSHR and LHB polymorphisms, as potential markers of oocyte competence. Methods: Cumulus cells from 36 stimulated patients were collected and SNP genotyping performed by PCR. Gene expression was evaluated through real-time PCR, and apoptosis estimated via TUNEL assay, and cle…

0301 basic medicineApoptosis; Cumulus cells; FSHR; Gene expression; LH; Polymorphism; PhysiologyLHPhysiologyApoptosislcsh:PhysiologyGonadotropin-Releasing Hormone0302 clinical medicineGene FrequencyFSHRGene expressionlcsh:QD415-436Settore BIO/06 - Anatomia Comparata E CitologiaCells CulturedIn Situ Hybridization Fluorescence030219 obstetrics & reproductive medicinelcsh:QP1-981Caspase 3Apoptosis; Cumulus cells; FSHR; Gene expression; LH; Polymorphismmedicine.anatomical_structureCumulus cellReceptors FSHDNA fragmentationFemaleSignal TransductionAdultHeterozygotemedicine.medical_specialtyendocrine systemGenotypeGranulosa cellCumulus cellsDNA FragmentationFertilization in VitroBiologyReal-Time Polymerase Chain ReactionBuserelinPolymorphism Single Nucleotidelcsh:Biochemistry03 medical and health sciencesFollicleInternal medicinemedicineHumansPolymorphismApoptosiHeterozygote advantageLuteinizing Hormone beta SubunitOocyte030104 developmental biologyEndocrinologyHaplotypesApoptosisMultivariate AnalysisOocytesGene expressionFollicle-stimulating hormone receptorProto-Oncogene Proteins c-aktCellular Physiology and Biochemistry
researchProduct

The cytoprotective protein MANF promotes neuronal survival independently from its role as a GRP78 cofactor

2021

Mesencephalic astrocyte-derived neurotrophic factor (MANF) is an endoplasmic reticulum (ER)-stress-regulated protein exhibiting cytoprotective properties through a poorly understood mechanism in various in vitro and in vivo models of neuronal and non-neuronal damage. Although initially characterized as a secreted neurotrophic factor for midbrain dopamine neurons, MANF has recently gained more interest for its intracellular role in regulating the ER homeostasis, including serving as a cofactor of the chaperone glucose-regulated protein 78 (GRP78). We aimed for a better understanding of the neuroprotective mechanisms of MANF. Here we show for the first time that MANF promotes the survival of …

0301 basic medicineBiFC bimolecular fluorescence complementationMST microscale thermophoresisPDIA1 protein disulfide isomerase family A member 1ApoptosisNEUROTROPHIC FACTOR MANFEndoplasmic ReticulumBiochemistryprotein-protein interactionMiceBimolecular fluorescence complementationUPR unfolded protein responseENDOPLASMIC-RETICULUM STRESSMesencephalonNeurotrophic factorsInsulin-Secreting CellsProtein Interaction MappingBINDINGCOMPREHENSIVE RESOURCEATF6unfolded protein response (UPR)PDIA6 protein disulfide isomerase family A member 6PPIs protein-protein interactionsEndoplasmic Reticulum Chaperone BiPHeat-Shock ProteinsNPTN neuroplastinbiologyChemistryapoptosisunfolded protein responsedopamine neurons3. Good healthCell biologyGDNF glial cell line–derived neurotrophic factorIRE1-ALPHASBD substrate-binding domainendoplasmic reticulum stressMANF mesencephalic astrocyte-derived neurotrophic factorTm tunicamycinneuroprotectionResearch ArticleProtein BindingSignal TransductionGRP78Protein Disulfide-Isomerase FamilyCell SurvivalTH tyrosine hydroxylasePrimary Cell CultureSCG superior cervical ganglionProtein Disulfide-IsomerasesIRE1 inositol-requiring enzyme 1ER-STRESSER endoplasmic reticulum03 medical and health sciencesohjelmoitunut solukuolemaC-MANF C-terminal domain of MANFCSPs chemical shift perturbationsAnimalsHumansHSP70 Heat-Shock ProteinsNerve Growth FactorsNBD nucleotide-binding domainNMR nuclear magnetic resonanceMolecular Biology030102 biochemistry & molecular biologyBIPATF6Dopaminergic NeuronsGene Expression ProfilingBinding proteinneuronal cell deathDISSOCIATIONCell BiologyNEI nucleotide exchange inhibitorEmbryo MammalianadenosiinitrifosfaattiATPhermosolutmesencephalic astrocyte-derived neurotrophic factorprotein–protein interactionPERK protein kinase RNA-like ER kinaseHEK293 Cells030104 developmental biologyGene Expression RegulationChaperone (protein)Tg thapsigarginbiology.proteinUnfolded protein responseAP-MS affinity purification mass spectrometry1182 Biochemistry cell and molecular biologyGFP-SH SH-tagged GFPendoplasmic reticulum stress (ER stress)DA dopaminemesencephalic astrocyte-derived neurotrophic factor (MANF)proteiinitNeuroplastin
researchProduct

The application protocol impacts the effectiveness of biocides against lichens

2020

Abstract This work analyzed the influence of different application protocols on the efficacy of two biocides against the foliose lichen Xanthoparmelia tinctina on the sandstones of the Roman Archaeological site of Luni (Italy). The hypotheses that (a) biocide application tools (brush vs. poultice), (b) pre-treatment hydration, and (c) post-treatment washing may affect devitalization success were verified by monitoring chlorophyll a fluorescence of thalli, both in situ and in laboratory conditions. The hypothesis that (d) stone substrate may act as reservoir for later biocide release under repeated cycles of wetting and drying was also assayed. Analyses confirmed the importance of the applic…

0301 basic medicineBiocide030106 microbiologyFoliose lichenLichenBenzalkonium chloride010501 environmental sciences01 natural sciencesMicrobiologyBiomaterials03 medical and health sciencesBenzalkonium chloridechemistry.chemical_compoundAdsorptionChlorophyll a fluorescencemedicineCelluloseThallus hydrationLichenWaste Management and DisposalBenzalkonium chloride Chlorophyll a fluorescence Lichen Thallus hydration Stone conservation0105 earth and related environmental sciencesChemistryBenzalkonium chloride; Chlorophyll a fluorescence; Lichen; Stone conservation; Thallus hydrationPoulticeThallusEnvironmental chemistryStone conservationmedicine.drugInternational Biodeterioration & Biodegradation
researchProduct

Species- and site-specific efficacy of commercial biocides and application solvents against lichens

2017

Abstract Control of lichens on stone cultural heritage is mostly achieved by a combination of mechanical removal with biocide applications. However, there is a lack of scientific evidence on the efficacy of different biocides on different species, and on the consistency of biocide effects on heritage sites in different environmental conditions. This results in some uncertainty when conservation interventions to control lichens are routinely defined on the basis of restoration tradition or empirical evaluation, without experimental measures of how lichens respond. In this work, we quantitatively evaluated (a) the efficacy of five commercially-available biocides, applied using a brush or with…

0301 basic medicineBiocideBiocide; Chlorophyll a fluorescence; Ergosterol; Lichen; Organic solvents; Microbiology; Biomaterials; Waste Management and DisposalBiocide030106 microbiologyLichenVerrucaria nigrescens010501 environmental sciencesBiologyVitalityProtoparmeliopsis muralis01 natural sciencesMicrobiologyBiomaterials03 medical and health sciencesErgosterolChlorophyll a fluorescenceBotanyLichenWaste Management and Disposal0105 earth and related environmental sciencesBiocide Chlorophyll fluorescence Ergosterol Lichen Organic solventsPoulticeOrganic solventsEnvironmental chemistryChlorophyll fluorescenceBiocide Chlorophyll a fluorescence Ergosterol Lichen Organic solventsInternational Biodeterioration & Biodegradation
researchProduct

Role of pulmonary surfactant protein Sp-C dimerization on membrane fragmentation: An emergent mechanism involved in lung defense and homeostasis.

2020

Surfactant protein C (SP-C) is a protein present in the pulmonary surfactant system that is involved in the biophysical properties of this lipoprotein complex, but it also has a role in lung defense and homeostasis. In this article, we propose that the link between both functions could rely on the ability of SP-C to induce fragmentation of phospholipid membranes and generate small vesicles that serve as support to present different ligands to cells in the lungs. Our results using bimolecular fluorescence complementation and tunable resistive pulse sensing setups suggest that SP-C oligomerization could be the triggering event that causes membrane budding and nanovesiculation. As shown by flu…

0301 basic medicineBiophysicsBiochemistryCell Line03 medical and health sciencesBimolecular fluorescence complementation0302 clinical medicinePulmonary surfactantProtein DomainsHumansAmino Acid SequenceFragmentation (cell biology)Unilamellar LiposomesChemistryVesicleSurfactant protein CCell BiologyMembrane buddingFlow CytometryPulmonary Surfactant-Associated Protein CEndocytosisRecombinant ProteinsCell biology030104 developmental biology030228 respiratory systemMembrane proteinStructural biologyMicroscopy FluorescencePeptidomimeticsProtein MultimerizationDimerizationBiochimica et biophysica acta. Biomembranes
researchProduct