Search results for " epithelial to mesenchymal transition"

showing 3 items of 3 documents

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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Prognostic Role of High-Grade Tumor Budding in Pancreatic Ductal Adenocarcinoma: A Systematic Review and Meta-Analysis with a Focus on Epithelial to …

2019

This study aims at clarifying the prognostic role of high-grade tumor budding (TB) in pancreatic ductal adenocarcinoma (PDAC) with the first systematic review and meta-analysis on this topic. Furthermore, we analyzed with a systematic review the relationship between TB and a recently suggested TB-associated mechanism: the epithelial to mesenchymal transition (EMT). Analyzing a total of 613 patients, 251 of them (40.9%) with high grade-TB, we found an increased risk of all-cause mortality (RR, 1.46; 95% CI, 1.13-1.88, p = 0.004; HR, 2.65; 95% CI, 1.79-3.91; p < 0.0001) and of recurrence (RR, 1.61; 95% CI, 1.05-2.47, p = 0.03) for PDAC patients with high-grade TB. Moreover, we found that E…

0301 basic medicineOncologyCancer Researchmedicine.medical_specialtyPancreatic ductal adenocarcinomapancreatic cancerHigh grade tumorReviewEMT; budding; buds; epithelial to mesenchymal transition; pancreatic cancerbuddinglcsh:RC254-28203 medical and health sciences0302 clinical medicineTumor buddingPancreatic cancerInternal medicineMedicineClinical significanceEpithelial–mesenchymal transitionbusiness.industryEMTepithelial to mesenchymal transitionbudslcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogensmedicine.diseasebud3. Good health030104 developmental biologyIncreased riskOncology030220 oncology & carcinogenesisMeta-analysisbusinessCancers
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Compromised nuclear envelope integrity drives TREX1-dependent DNA damage and tumor cell invasion

2021

Although mutations leading to a compromised nuclear envelope cause diseases such as muscular dystrophies or accelerated aging, the consequences of mechanically induced nuclear envelope ruptures are less known. Here, we show that nuclear envelope ruptures induce DNA damage that promotes senescence in non-transformed cells and induces an invasive phenotype in human breast cancer cells. We find that the endoplasmic reticulum (ER)-associated exonuclease TREX1 translocates into the nucleus after nuclear envelope rupture and is required to induce DNA damage. Inside the mammary duct, cellular crowding leads to nuclear envelope ruptures that generate TREX1-dependent DNA damage, thereby driving the …

SenescenceExonucleaseDNA damageNuclear Envelope[SDV]Life Sciences [q-bio]Breast NeoplasmsBiologySettore MED/08 - Anatomia PatologicaGeneral Biochemistry Genetics and Molecular BiologyCell LineMicemedicineSettore MED/05 - Patologia ClinicaAnimalsHumansNeoplasm InvasivenessEpithelial–mesenchymal transitionCellular SenescenceEndoplasmic reticulumPhosphoproteinsXenograft Model Antitumor AssaysCell biology[SDV] Life Sciences [q-bio]medicine.anatomical_structureExodeoxyribonucleasesCancer cellProteolysisbiology.proteinTREX1 nuclear envelope rupture DNA damage mammary duct carcinoma tumor invasion senescence breast cancer cGAS confinement epithelial to mesenchymal transition Animals Breast Neoplasms Cell Line Cellular Senescence Collagen Disease Progression Exodeoxyribonucleases Female Humans Mice Neoplasm InvasivenessNuclear Envelope PhosphoproteinsProteolysis Xenograft Model Antitumor Assays DNA DamageDisease ProgressionFemaleCollagenNucleusExtracellular Matrix DegradationDNA Damage
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