Search results for "Regulació genètica"

showing 3 items of 3 documents

A Pathology-Based Combined Model to Identify PAM50 Non-luminal Intrinsic Disease in Hormone Receptor-Positive HER2-Negative Breast Cancer

2019

No luminal; Subtipus intrínsec; Càncer de mama No luminal; Subtipo intrínseco; Cáncer de mama Non-luminal; Intrinsic subtype, Breast cancer Background: In hormone receptor-positive (HR+)/HER2-negative breast cancer, the HER2-enriched and Basal-like intrinsic subtypes are associated with poor outcome, low response to anti-estrogen therapy and high response to chemotherapy. To date, no validated biomarker exists to identify both molecular entities other than gene expression. Methods: PAM50 subtyping and immunohistochemical data were obtained from 8 independent studies of 1,416 HR+/HER2-negative early breast tumors. A non-luminal disease score (NOLUS) from 0 to 100, based on percentage of estr…

0301 basic medicineCancer Researchmedicine.medical_specialtyintrinsic subtype:Neoplasms::Neoplasms by Site::Breast Neoplasms [DISEASES]:Genetic Phenomena::Gene Expression Regulation::Gene Expression Regulation Neoplastic [PHENOMENA AND PROCESSES]medicine.medical_treatmentEstrogen receptor:fenómenos genéticos::regulación de la expresión génica::regulación de la expresión génica neoplásica [FENÓMENOS Y PROCESOS]:aminoácidos péptidos y proteínas::proteínas::receptores citoplásmicos y nucleares::receptores de esteroides::receptores de estrógenos [COMPUESTOS QUÍMICOS Y DROGAS]lcsh:RC254-282Gastroenterology03 medical and health sciencesbreast cancer0302 clinical medicineBreast cancerMama - CàncerInternal medicineRegulació genèticaProgesterone receptorMedicinePAM50Original Research:neoplasias::neoplasias por localización::neoplasias de la mama [ENFERMEDADES]Chemotherapynon-luminalbusiness.industry:Amino Acids Peptides and Proteins::Proteins::Receptors Cytoplasmic and Nuclear::Receptors Steroid::Receptors Estrogen [CHEMICALS AND DRUGS]lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogensmedicine.disease030104 developmental biologyEstrògens - ReceptorsOncologyHormone receptor030220 oncology & carcinogenesisCohortgene expressionBiomarker (medicine)ImmunohistochemistrybusinessFrontiers in Oncology
researchProduct

The ribosome assembly gene network is controlled by the feedback regulation of transcription elongation

2017

Ribosome assembly requires the concerted expression of hundreds of genes, which are transcribed by all three nuclear RNA polymerases. Transcription elongation involves dynamic interactions between RNA polymerases and chromatin. We performed a synthetic lethal screening in Saccharomyces cerevisiae with a conditional allele of SPT6, which encodes one of the factors that facilitates this process. Some of these synthetic mutants corresponded to factors that facilitate pre-rRNA processing and ribosome biogenesis. We found that the in vivo depletion of one of these factors, Arb1, activated transcription elongation in the set of genes involved directly in ribosome assembly. Under these depletion c…

0301 basic medicineRibosomal ProteinsSaccharomyces cerevisiae ProteinsTranscription Elongation GeneticCèl·lulesÀcids nucleicsGene regulatory networkRibosome biogenesisSaccharomyces cerevisiaeBiologyRibosome assembly03 medical and health sciencesRegulació genèticaGeneticsGene Regulatory NetworksHistone ChaperonesRNA Processing Post-TranscriptionalGeneAdenosine TriphosphatasesFeedback PhysiologicalMessenger RNAOrganelle BiogenesisGene regulation Chromatin and EpigeneticsRNAChromatinCell biology030104 developmental biologyRNA RibosomalMutationATP-Binding Cassette TransportersOrganelle biogenesisTranscriptional Elongation FactorsSynthetic Lethal MutationsTranscriptomeRibosomes
researchProduct

Cabut/dTIEG associates with the transcription factor Yorkie for growth control

2015

The Drosophila transcription factor Cabut/dTIEG (Cbt) is a growth regulator, whose expression is modulated by different stimuli. Here, we determine Cbt association with chromatin and identify Yorkie (Yki), the transcriptional co-activator of the Hippo (Hpo) pathway as its partner. Cbt and Yki co-localize on common gene promoters, and the expression of target genes varies according to changes in Cbt levels. Down-regulation of Cbt suppresses the overgrowth phenotypes caused by mutations in expanded (ex) and yki overexpression, whereas its up-regulation promotes cell proliferation. Our results imply that Cbt is a novel partner of Yki that is required as a transcriptional co-activator in growth…

Chromatin ImmunoprecipitationdTIEGgrowthBiologyProtein Serine-Threonine KinasesReal-Time Polymerase Chain ReactionBiochemistrybehavioral disciplines and activitiesModels BiologicalCabutRegulació genèticamental disordersGeneticsAnimalsDrosophila ProteinsDrosòfila -- GenèticaNuclear proteinYorkieMolecular BiologyGeneTranscription factorGeneticsSequence Analysis RNAfungiScientific ReportsGAFIntracellular Signaling Peptides and ProteinsNuclear ProteinsPromoterYAP-Signaling ProteinsPhenotypeCell biologyChromatinbody regionsJuvenile HormonesTrans-ActivatorsDrosophilaSignal transductionChromatin immunoprecipitationSignal TransductionTranscription FactorsEMBO Reports
researchProduct