Search results for "Phosphoinositide 3-kinase"

showing 5 items of 5 documents

Synergistic Growth Inhibitory Activity of Combined Mek/Mtor Pathway Blockade in Pten-Null Cancers

2014

ABSTRACT Aim: We have recently shown that induction of PTEN expression plays an integral role in MEK inhibitors' antitumor activity. Here we hypothesize that PTEN status critically influences the functional outcome of combined MEK and PI3K/mTOR inhibition. Methods: Single and combined MEK (trametinib, T) and mTOR (everolimus, E) blockade were assessed in a panel of cancer cell lines and in patient-derived lung and colon cancer stem cells (L- or C-CSC). Pharmacologic interactions were analyzed by conservative isobologram analysis. PTEN role was assessed by shRNA-mediated silencing or overexpression by stable transfection. Treatment-induced changes in the phosphoproteome were analyzed by anti…

MEK/MTORMAPK/ERK pathwayTrametinibPhosphoinositide 3-kinasebiologyKinaseRPTORHematologyOncologySettore MED/04 - PATOLOGIA GENERALEbiology.proteinCancer researchPTENProtein kinase BPI3K/AKT/mTOR pathwayAnnals of Oncology
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TGF-β Signaling Pathways in Different Compartments of the Lower Airways of Patients With Stable COPD

2017

Background: The expression and localization of transforming growth factor-β (TGF-β) pathway proteins in different compartments of the lower airways of patients with stable COPD is unclear. We aimed to determine TGF-β pathway protein expression in patients with stable COPD. Methods: The expression and localization of TGF-β pathway components was measured in the bronchial mucosa and peripheral lungs of patients with stable COPD (n = 44), control smokers with normal lung function (n = 24), and control nonsmoking subjects (n = 11) using immunohistochemical analysis. Results: TGF-β1, TGF-β3, and connective tissue growth factor expression were significantly decreased in the bronchiolar epithelium…

MaleCCN2 connective tissue growth factorSmad Proteinsairway inflammationCritical Care and Intensive Care MedicineTRAP-1 transforming growth factor-β receptor-associated binding proteinPulmonary Disease Chronic ObstructiveLAP latency-associated peptideSMAD small mother against decapentaplegicBAMBI CTGF SMAD TGF-B airway inflammation autoimmunityLungTGF transforming growth factorLLC large latent complexBAMBI CTGF SMAD TGF-β Airway Inflammation AutoimmunityautoimmunityMiddle Agedrespiratory systemLTBP latent transforming growth factor-β binding proteinImmunohistochemistryTGIF 5′-TG-3′-interacting factorECM extracellular matrixTGFBI transforming growth factor-β-induced proteinFemaleCardiology and Cardiovascular MedicinePI3K phosphoinositide 3-kinaseSignal TransductionTGF-βPulmonary and Respiratory MedicineTGF-βR TGF-β receptorSocio-culturaleBronchiRespiratory MucosaArticleTGF-BTransforming Growth Factor beta1Transforming Growth Factor beta3Macrophages AlveolarHumansAgedBAMBI; CTGF; SMAD; TGF-β; airway inflammation; autoimmunityBAMBIMembrane ProteinsCTGFBMP bone morphogenetic proteinBAMBI; CTG; SMAD; TGF-β; airway inflammation; autoimmunityCTGBAMBI bone morphogenetic proteins and activin membrane-bound inhibitorrespiratory tract diseasesairway inflammation; autoimmunity; BAMBI; CTGF; SMAD; TGF-β; Pulmonary and Respiratory Medicine; Critical Care and Intensive Care Medicine; Cardiology and Cardiovascular MedicineCase-Control StudiesBiomarkersMAPK mitogen-activated protein kinaseSMAD
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The dark side of the moon: The PI3K/PTEN/AKT pathway in colorectal carcinoma

2009

Wild-type KRAS status is required but not sufficient to confer sensitivity to anti-epidermal growth factor receptor (EGFR) monoclonal antibodies (mAbs) in colorectal cancer patients. As a consequence, one of the major challenges is to identify, in non-mutant KRAS patients, other markers that can predict lack of response to this therapy. Small series have investigated the clinical effect of PIK3CA mutations on resistance to anti-EGFR mAbs and discrepant results have been observed. Furthermore, PTEN loss in metastases may be predictive of resistance to anti-EGFR mAbs, even if PTEN determination is far from an immediate clinical application. The introduction of modulators of the PI3K/AKT/mTOR …

PTENCancer ResearchClass I Phosphatidylinositol 3-KinasesPrognosiSettore MED/06 - Oncologia MedicaColorectal cancerCetuximabColorectal NeoplasmPhosphoinositide 3-kinasemedicine.disease_causePhosphatidylinositol 3-KinasesAntineoplastic Combined Chemotherapy ProtocolsBiomarkers TumormedicineHumansPTENPanitumumabEpidermal growth factor receptorProtein kinase BPI3K/AKT/mTOR pathwayClass I Phosphatidylinositol 3-KinaseAntineoplastic Combined Chemotherapy ProtocolbiologyCetuximabAKTMTORPanitumumabPTEN PhosphohydrolaseAntibodies MonoclonalGeneral MedicinePrognosismedicine.diseaseErbB ReceptorsOncologyMutationbiology.proteinCancer researchReceptor Epidermal Growth FactorKRASPhosphatidylinositol 3-KinaseColorectal NeoplasmsProto-Oncogene Proteins c-aktHumanSignal Transductionmedicine.drug
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B-cell maintenance, response and surveillance (ML11)

2010

Phosphoinositide 3-kinaseImmune systemmedicine.anatomical_structureImmunologybiology.proteinmedicineImmunology and AllergyGeneral MedicineBiologySignal pathwayB cellHomeostasisCell biologyInternational Immunology
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Phospholipidosis and down-regulation of the PI3-K/PDK-1/Akt signalling pathway are vitamin E inhibitable events associated with 7-ketocholesterol-ind…

2007

International audience; Among the oxysterols accumulating in atherosclerotic plaque, 7-ketocholesterol (7KC) is a potent apoptotic inducer, which favours myelin figure formation and polar lipid accumulation. This investigation performed on U937 cells consisted in characterizing the myelin figure formation process; determining the effects of 7KC on the PI3-K/PDK-1/Akt signalling pathway; evaluating the activities of vitamin E (Vit-E) (α-tocopherol) on the formation of myelin figures and the PI3-K/PDK-1/Akt signalling pathway and assessing the effects of PI3-K inhibitors (LY-294002, 3-methyladenine) on the activity of Vit-E on cell death and polar lipid accumulation. The ultrastructural and b…

Programmed cell deathOxysterolEndocrinology Diabetes and MetabolismClinical BiochemistryDown-RegulationApoptosisPyrimidinones[SDV.BC]Life Sciences [q-bio]/Cellular BiologyProtein Serine-Threonine KinasesBiochemistryDephosphorylationPhosphatidylinositol 3-Kinases03 medical and health sciences0302 clinical medicineMicroscopy Electron TransmissionOxazinesHumansVitamin EKetocholesterolsMolecular BiologyProtein kinase BPhospholipids030304 developmental biologyPhospholipidosis0303 health sciencesNutrition and DieteticsPhosphoinositide 3-kinasebiologyChemistryPyruvate Dehydrogenase Acetyl-Transferring KinaseU937 CellsProtein phosphatase 2Cell biology030220 oncology & carcinogenesisbiology.proteinBenzimidazolesSignal transductionProto-Oncogene Proteins c-aktSignal TransductionThe Journal of Nutritional Biochemistry
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