Search results for " Secretory Vesicles"

showing 2 items of 2 documents

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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Shedding of Membrane Vesicles Mediates Fibroblast Growth Factor-2 Release from Cells

2003

Fibroblast growth factor-2 (FGF-2), a polypeptide with regulatory activity on cell growth and differentiation, lacks a conventional secretory signal sequence, and its mechanism of release from cells remains unclear. We characterized the role of extracellular vesicle shedding in FGF-2 release. Viable cells released membrane vesicles in the presence of serum. However, in serum-free medium vesicle shedding was dramatically down-regulated, and the cells did not release FGF-2 activity into their conditioned medium. Addition of serum to serum-starved cells rapidly induced intracellular FGF-2 clustering under the plasma membrane and into granules that colocalized with patches of the cell membrane …

SerumFGF-2 extracellular vesiclesBiologyFibroblast growth factorBiochemistryCulture Media Serum-FreeSettore MED/13 - EndocrinologiaCell Line; Tumor; Endothelial Cells; Fibroblast Growth Factor 2; Secretory VesiclesCell LineCell membraneSettore BIO/13 - Biologia ApplicataCell Line TumorSettore BIO/10 - BiochimicamedicineHumansProtein IsoformsFibroblastMolecular BiologyTumorSecretory VesiclesVesicleCell MembraneEndothelial CellsCell BiologyExtracellular vesicleSecretory VesicleCell biologyKineticsmedicine.anatomical_structureMicroscopy FluorescenceCell cultureFibroblast Growth Factor 2IntracellularJournal of Biological Chemistry
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