0000000000235947

AUTHOR

Giannino Del Sal

showing 6 related works from this author

Breast Cancer Organoids Model Patient-Specific Response to Drug Treatment

2020

Tumor organoids are tridimensional cell culture systems that are generated in vitro from surgically resected patients&rsquo

0301 basic medicineCancer ResearchMechanotransductionBreast cancer; Dasatinib; Drug testing; Heterogeneity; Mechanotransduction; Patient‐derived tumor organoids; Statin; YAPPatient‐derived tumor organoidCellDasatinibDrug resistanceSettore MED/08 - Anatomia PatologicaBiologylcsh:RC254-282Article03 medical and health sciencesBreast cancer0302 clinical medicineBreast cancerbreast cancermedicineOrganoidSettore MED/05 - Patologia Clinicadasatinibdrug testingmechanotransductionpatient-derived tumor organoidsGenetic heterogeneitystatinStatinDrug testingBreast cancerDasatinib Drug testing Drug testing Heterogeneity Patient‐derived tumor organoids Statin YAPmedicine.diseaselcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogensIn vitroDasatinib030104 developmental biologymedicine.anatomical_structureOncologyCell culture030220 oncology & carcinogenesisCancer researchPatient‐derived tumor organoidsYAPHeterogeneityheterogeneitymedicine.drugCancers
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p53-Mediated downregulation of H ferritin promoter transcriptional efficiency via NF-Y.

2008

The tumor suppressor protein p53 triggers many of the cellular responses to DNA damage by regulating the transcription of a series of downstream target genes. p53 acts on the promoter of the target genes by interacting with the trimeric transcription factor NF-Y. H ferritin promoter activity is tightly dependent on a multiprotein complex called Bbf; on this complex NF-Y plays a major role. The aim of this work was to study the modulation of H ferritin expression levels by p53. CAT reporter assays indicate that: (i) p53 overexpression strongly downregulates the transcriptional efficiency driven by an H ferritin promoter construct containing only the NF-Y recognition sequence and that the phe…

Chromatin ImmunoprecipitationMultiprotein complexTranscription GeneticDown-RegulationBiologyBiochemistryTranscriptional regulationDownregulation and upregulationTranscription (biology)Transcriptional regulationFerritin geneHumansElectrophoretic mobility shift assayp300-CBP Transcription FactorsPromoter Regions GeneticTranscription factorGeneFerritin gene; Transcriptional regulation; Transcriptional factorCell BiologyHCT116 CellsMolecular biologyGene Expression Regulation NeoplasticCCAAT-Binding FactorDoxorubicinTranscriptional factorApoferritinsTumor Suppressor Protein p53Chromatin immunoprecipitationHeLa CellsProtein Binding
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Mutant p53 induces Golgi tubulo-vesiculation driving a prometastatic secretome

2020

TP53 missense mutations leading to the expression of mutant p53 oncoproteins are frequent driver events during tumorigenesis. p53 mutants promote tumor growth, metastasis and chemoresistance by affecting fundamental cellular pathways and functions. Here, we demonstrate that p53 mutants modify structure and function of the Golgi apparatus, culminating in the increased release of a pro-malignant secretome by tumor cells and primary fibroblasts from patients with Li-Fraumeni cancer predisposition syndrome. Mechanistically, interacting with the hypoxia responsive factor HIF1α, mutant p53 induces the expression of miR-30d, which in turn causes tubulo-vesiculation of the Golgi apparatus, leading …

0301 basic medicineBiopsyGeneral Physics and AstronomyGolgi ApparatusAnimals Biopsy Breast Neoplasms Cell Line Tumor Cell Transformation Neoplastic Female Fibroblasts Gene Expression Regulation Neoplastic Golgi Apparatus Humans Hypoxia-Inducible Factor 1 alpha Subunit Li-Fraumeni Syndrome Mice MicroRNAs Microtubules Mutation Primary Cell Culture Secretory Vesicles Signal TransductionSkin Tumor Microenvironment Tumor Suppressor Protein p53 Xenograft Model Antitumor Assays02 engineering and technologymedicine.disease_causeCell TransformationMicrotubulesSettore BIO/09 - FisiologiaMetastasisLi-Fraumeni SyndromeMiceTumor MicroenvironmentGolgisecretory machinerySuper-resolution microscopyAnimals; Biopsy; Breast Neoplasms; Cell Line Tumor; Cell Transformation Neoplastic; Female; Fibroblasts; Gene Expression Regulation Neoplastic; Golgi Apparatus; Humans; Hypoxia-Inducible Factor 1 alpha Subunit; Li-Fraumeni Syndrome; Mice; MicroRNAs; Microtubules; Mutation; Primary Cell Culture; Secretory Vesicles; Signal Transduction; Skin; Tumor Microenvironment; Tumor Suppressor Protein p53; Xenograft Model Antitumor Assayslcsh:ScienceSkinMultidisciplinaryTumorChemistrymutant p53QCell migrationMicroRNASecretomics021001 nanoscience & nanotechnologyCell biologyGene Expression Regulation NeoplasticCell Transformation NeoplasticsymbolsFibroblastmiR-30dFemaleHypoxia-Inducible Factor 10210 nano-technologyBreast NeoplasmHumanSignal TransductionCancer microenvironmentStromal cellSecretory VesicleSciencePrimary Cell CultureBreast NeoplasmsMicrotubuleGolgi ApparatuSettore MED/08 - Anatomia Patologicaalpha SubunitGeneral Biochemistry Genetics and Molecular BiologyArticleCell Line03 medical and health sciencessymbols.namesakeCell Line TumormedicineAnimalsHumansSettore MED/05 - Patologia ClinicaSecretionTumor microenvironmentNeoplasticAnimalSecretory VesiclesGeneral ChemistryOncogenesGolgi apparatusHDAC6FibroblastsMicroreviewHypoxia-Inducible Factor 1 alpha SubunitmicroenvironmentXenograft Model Antitumor AssaysMicroRNAs030104 developmental biologyGene Expression RegulationMutationlcsh:QTumor Suppressor Protein p53Carcinogenesis
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Abstract CT261: METAMECH -A Master Observational Trial empowering mechanobiology translational research and mechanobased proof of concept trials in b…

2020

Abstract Background: Breast cancer (BC) is the most frequent tumor in women worldwide. BC lethality is caused by aggressive, therapy-resistant metastases (mBC). Preliminary data have shown that mBC lesions are invariably embedded into a densely packed network of fibrous extracellular matrix, making the metastatic microenvironment a potent inducer of mechanical inputs, ultimately leading to the activation of the transcription factors YAP/TAZ. Aberrant mechano-signaling could thus represent a vulnerability of metastasis, which can be exploited to develop new therapeutic strategies. To investigate how metastatic outgrowth is regulated by the physical properties of the microenvironment, and how…

OncologyCancer Researchmedicine.medical_specialtybusiness.industryObservational TrialCancerTranslational researchmedicine.diseaseImaging dataMetastasisBreast cancerClinical researchOncologyInternal medicineMedicineSample collectionbusinessCancer Research
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Bridge-Induced Translocation between NUP145 and TOP2 Yeast Genes Models the Genetic Fusion between the Human Orthologs Associated With Acute Myeloid …

2017

In mammalian organisms liquid tumors such as acute myeloid leukemia (AML) are related to spontaneous chromosomal translocations ensuing in gene fusions. We previously developed a system named bridge-induced translocation (BIT) that allows linking together two different chromosomes exploiting the strong endogenous homologous recombination system of the yeast Saccharomyces cerevisiae. The BIT system generates a heterogeneous population of cells with different aneuploidies and severe aberrant phenotypes reminiscent of a cancerogenic transformation. In this work, thanks to a complex pop-out methodology of the marker used for the selection of translocants, we succeeded by BIT technology to preci…

P53bridge-induced translocationgene fusionnucleoporinacute myeloid leukemiayeastlcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogenslcsh:RC254-282Frontiers in Oncology
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The prolyl-isomerase PIN1 is essential for nuclear Lamin-B structure and function and protects heterochromatin under mechanical stress.

2021

Summary: Chromatin organization plays a crucial role in tissue homeostasis. Heterochromatin relaxation and consequent unscheduled mobilization of transposable elements (TEs) are emerging as key contributors of aging and aging-related pathologies, including Alzheimer’s disease (AD) and cancer. However, the mechanisms governing heterochromatin maintenance or its relaxation in pathological conditions remain poorly understood. Here we show that PIN1, the only phosphorylation-specific cis/trans prolyl isomerase, whose loss is associated with premature aging and AD, is essential to preserve heterochromatin. We demonstrate that this PIN1 function is conserved from Drosophila to humans and prevents…

transposonsNeocortexMiceHeterochromatinProlyl isomeraseDrosophila ProteinsBiology (General)PhosphorylationRNA Small InterferingTissue homeostasisCells CulturedSettore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniNeuronsLamin Type BChemistryHP1phosphorylationneurodegenerationnuclear envelopePeptidylprolyl IsomeraseCell biologyDrosophila heterochromatin HP1 Lamin mechanical stress neurodegeneration nuclear envelope phosphorylation PIN1 transposonsNuclear laminaDrosophilaRNA InterferencePremature agingQH301-705.5HeterochromatinNuclear EnvelopeDrosophila; heterochromatin; HP1; Lamin; mechanical stress; neurodegeneration; nuclear envelope; phosphorylation; PIN1; transposonsSettore BIO/11 - Biologia MolecolareSettore MED/08 - Anatomia PatologicaGeneral Biochemistry Genetics and Molecular BiologyPIN1Alzheimer DiseaseSettore MED/05 - Patologia ClinicaAnimalsHumansHeterochromatin maintenancemechanical stressheterochromatinmechanical streMice Inbred C57BLNIMA-Interacting Peptidylprolyl IsomeraseChromobox Protein Homolog 5DNA Transposable ElementsHeterochromatin protein 1Stress MechanicalLaminLaminCell reports
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