0000000000382903

AUTHOR

Rosaria Orlandi

showing 3 related works from this author

Abstract A18: miR-9 and miR-200 regulate PDGFRβ-mediated endothelial differentiation of neoplastic cells in triple-negative breast cancer

2016

Abstract Tumor vascularization is a fundamental step in solid tumor progression and is orchestrated by different pathways of vasculogenesis. In malignant tumors, neoplastic cells can differentiate into endothelial-like cells acquiring the expression of endothelial markers (i.e. CD31 and CD34) and participating in the formation of vascular-like structures that functionally deliver oxygen and nutrients to the tumor site. We recently identified PDGFRβ as an important player of this process in triple negative breast cancer (TNBC). Interestingly, increasing evidence supported a connection between PDGFRβ and epithelial to mesenchymal transition (EMT), important step for the endothelial trans-diff…

Tube formationCD31Cancer ResearchMatrigelPathologymedicine.medical_specialtyCD34BiologyVasculogenesisOncologymicroRNACancer researchmedicineEpithelial–mesenchymal transitionTriple-negative breast cancerCancer Research
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Mesenchymal Transition of High-Grade Breast Carcinomas Depends on Extracellular Matrix Control of Myeloid Suppressor Cell Activity

2016

SummaryThe extracellular matrix (ECM) contributes to the biological and clinical heterogeneity of breast cancer, and different prognostic groups can be identified according to specific ECM signatures. In high-grade, but not low-grade, tumors, an ECM signature characterized by high SPARC expression (ECM3) identifies tumors with increased epithelial-to-mesenchymal transition (EMT), reduced treatment response, and poor prognosis. To better understand how this ECM3 signature is contributing to tumorigenesis, we expressed SPARC in isogenic cell lines and found that SPARC overexpression in tumor cells reduces their growth rate and induces EMT. SPARC expression also results in the formation of a h…

0301 basic medicineMyeloidMDSCGene Expressionmedicine.disease_causeT-Lymphocytes RegulatoryPolyethylene GlycolsExtracellular matrixMiceBreast cancerMyeloid CellsOsteonectinMast Cellslcsh:QH301-705.5Mice KnockoutAntigen PresentationMice Inbred BALB CEMTepithelial to mesenchymal transitionBreast cancer; COX-2; CXCL12; ECM; EMT; G-CSF; GM-CSF; MDSC; SPARC; aminobisphosphonates; cyclooxygenase-2; epithelial to mesenchymal transition; extracellular matrix; granulocyte colony-stimulating factor; granulocyte-macrophage colony-stimulating factor; myeloid-derived suppressor cellsCXCL12Granulocyte macrophage colony-stimulating factormedicine.anatomical_structurecyclooxygenase-2granulocyte-macrophage colony-stimulating factorFemalegranulocyte colony-stimulating factormedicine.drugEpithelial-Mesenchymal Transitionextracellular matrixAntineoplastic AgentsBreast NeoplasmsBiologySettore MED/08 - Anatomia PatologicaG-CSFGeneral Biochemistry Genetics and Molecular Biology03 medical and health sciencesCell Line TumormedicineAnimalsHumansEpithelial–mesenchymal transitionECMMesenchymal stem cellSPARCGM-CSFCOX-2myeloid-derived suppressor cellsXenograft Model Antitumor AssaysIsogenic human disease modelsaminobisphosphonates030104 developmental biologylcsh:Biology (General)CelecoxibDoxorubicinImmunologyCancer researchMyeloid-derived Suppressor CellaminobisphosphonateNeoplasm GradingCarcinogenesisCell Reports
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miR-9 and miR-200 regulate PDGFRβ-mediated endothelial differentiation of tumor cells in triple-negative breast cancer

2016

Abstract Organization of cancer cells into endothelial-like cell-lined structures to support neovascularization and to fuel solid tumors is a hallmark of progression and poor outcome. In triple-negative breast cancer (TNBC), PDGFRβ has been identified as a key player of this process and is considered a promising target for breast cancer therapy. Thus, we aimed at investigating the role of miRNAs as a therapeutic approach to inhibit PDGFRβ-mediated vasculogenic properties of TNBC, focusing on miR-9 and miR-200. In MDA-MB-231 and MDA-MB-157 TNBC cell lines, miR-9 and miR-200 promoted and inhibited, respectively, the formation of vascular-like structures in vitro. Induction of endogenous miR-9…

0301 basic medicinePathologymedicine.medical_specialtyCancer ResearchCellular differentiationBlotting WesternFluorescent Antibody TechniqueTriple Negative Breast NeoplasmsMice SCIDBiologySettore MED/08 - Anatomia PatologicaPolymerase Chain ReactionNeovascularizationReceptor Platelet-Derived Growth Factor beta03 medical and health sciencesMice0302 clinical medicinemicroRNAmedicineAnimalsHumansTriple-negative breast cancerIn Situ HybridizationRegulation of gene expressionNeovascularization PathologicCancerEndothelial CellsCell Differentiationmedicine.diseaseImmunohistochemistryGene Expression Regulation NeoplasticMicroRNAs030104 developmental biologyOncologyOncology; Cancer Research030220 oncology & carcinogenesisGene Knockdown TechniquesCancer cellCancer researchHeterograftsEctopic expressionFemalemedicine.symptom
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