Search results for " osteoclasts"

showing 9 items of 9 documents

Cabozantinib targets bone microenvironment modulating human osteoclast and osteoblast functions

2016

Cabozantinib, a c-MET and vascular endothelial growth factor receptor 2 inhibitor, demonstrated to prolong progression free survival and improve skeletal disease-related endpoints in castration-resistant prostate cancer and in metastatic renal carcinoma. Our purpose is to investigate the direct effect of cabozantinib on bone microenvironment using a total human model of primary osteoclasts and osteoblasts.Osteoclasts were differentiated from monocytes isolated from healthy donors; osteoblasts were derived from human mesenchymal stem cells obtained from bone fragments of orthopedic surgery patients. Osteoclast activity was evaluated by tartrate resistant acid phosphatase (TRAP) staining and …

0301 basic medicinePyridines -- pharmacologyPyridinesPyridineImmunoenzyme TechniqueOsteoclastsApoptosisRANK Ligand -- genetics -- metabolismImmunoenzyme Techniqueschemistry.chemical_compoundBone Resorption -- drug therapy -- metabolism -- pathology0302 clinical medicineOsteogenesisCathepsin KMedicineAnilidesAnilides -- pharmacologyOsteoprotegerin -- genetics -- metabolismOsteoclasts -- cytology -- drug effects -- physiologyHuman primary cellCells CulturedTartrate-resistant acid phosphataseReceptor Activator of Nuclear Factor-kappa B -- genetics -- metabolismbiologyProto-Oncogene Proteins c-met -- genetics -- metabolismReceptor Activator of Nuclear Factor-kappa BReverse Transcriptase Polymerase Chain ReactionOsteoblastOsteogenesiOsteoblastCell DifferentiationSciences bio-médicales et agricolesProto-Oncogene Proteins c-metOsteoblasts -- cytology -- drug effects -- physiologymedicine.anatomical_structureCell Differentiation -- drug effectsOncologyRANKL030220 oncology & carcinogenesishuman primary cellsOsteoclastosteoprotegerin (OPG)bone microenvironmentHumanResearch Papermusculoskeletal diseasesmedicine.medical_specialtyCabozantinibBlotting WesternOsteogenesis -- drug effects -- physiologyReal-Time Polymerase Chain ReactionBone resorption03 medical and health sciencesOsteoprotegerinOsteoclastcabozantinibInternal medicineHumansRNA MessengerBone ResorptionCell ProliferationOsteoblastsbusiness.industryRANK LigandAnilideOsteoprotegerinApoptosiBone microenvironment; Cabozantinib; Human primary cells; Osteoprotegerin (OPG); Receptor activator of nuclear factor-kb ligand (RANKL); Anilides; Apoptosis; Blotting Western; Bone Resorption; Cell Differentiation; Cell Proliferation; Cells Cultured; Humans; Immunoenzyme Techniques; Osteoblasts; Osteoclasts; Osteogenesis; Osteoprotegerin; Proto-Oncogene Proteins c-met; Pyridines; RANK Ligand; RNA Messenger; Real-Time Polymerase Chain Reaction; Receptor Activator of Nuclear Factor-kappa B; Reverse Transcriptase Polymerase Chain Reaction; Oncology030104 developmental biologyEndocrinologychemistrybiology.proteinbusinessRNA Messenger -- geneticsreceptor activator of nuclear factor-kb ligand (RANKL)
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Inhibition of miR-21 restores RANKL/OPG ratio in multiple myeloma-derived bone marrow stromal cells and impairs the resorbing activity of mature oste…

2015

// Maria Rita Pitari 1 , Marco Rossi 1 , Nicola Amodio 1 , Cirino Botta 1 , Eugenio Morelli 1 , Cinzia Federico 1 , Annamaria Gulla 1 , Daniele Caracciolo 1 , Maria Teresa Di Martino 1 , Mariamena Arbitrio 2 , Antonio Giordano 3, 4 , Pierosandro Tagliaferri 1 , Pierfrancesco Tassone 1, 4 1 Department of Experimental and Clinical Medicine and T. Campanella Cancer Center, Magna Graecia University, S. Venuta University Campus, Catanzaro, Italy 2 ISN-CNR, Roccelletta di Borgia, Catanzaro, Italy 3 Department of Human Pathology and Oncology, University of Siena, Siena, Italy 4 Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology,…

Bone diseaseMessengerOsteoclastsTumor Microenvironment3' Untranslated RegionsMultiple myelomaTumorbiologyMesenchymal Stromal CellsRANKLProtein Inhibitors of Activated STATUp-Regulationmedicine.anatomical_structureOncologyRANKLmiRNAsmiR-21MiRNAMultiple MyelomaMiR-21; MiRNAs; Multiple myeloma bone disease; OPG; RANKL; 3' Untranslated Regions; Bone Marrow Cells; Bone Resorption; Cell Adhesion; Cell Line Tumor; Coculture Techniques; HEK293 Cells; Humans; Interleukin-6; Lentivirus; Mesenchymal Stromal Cells; MicroRNAs; Molecular Chaperones; Multiple Myeloma; Osteoclasts; Osteoprotegerin; Protein Inhibitors of Activated STAT; RANK Ligand; RNA Messenger; STAT3 Transcription Factor; Stromal Cells; Tumor Microenvironment; Up-Regulation; OncologyResearch Papermusculoskeletal diseasesSTAT3 Transcription FactorStromal cellBone Marrow CellsBone resorptionCell LineOsteoprotegerinCell Line TumormedicineCell AdhesionHumansRNA MessengerBone Resorptionbusiness.industryInterleukin-6LentivirusRANK LigandOsteoprotegerinMesenchymal Stem Cellsmedicine.diseaseMolecular medicineCoculture TechniquesMicroRNAsmultiple myeloma bone diseaseHEK293 CellsImmunologyCancer researchbiology.proteinRNAOPGBone marrowStromal CellsbusinessMolecular ChaperonesOncotarget
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miR-29b negatively regulates human osteoclastic cell differentiation and function: Implications for the treatment of multiple myeloma-related bone di…

2013

Skeletal homeostasis relies upon a fine tuning of osteoclast (OCLs)-mediated bone resorption and osteoblast (OBLs)-dependent bone formation. This balance is unsettled by multiple myeloma (MM) cells, which impair OBL function and stimulate OCLs to generate lytic lesions. Emerging experimental evidence is disclosing a key regulatory role of microRNAs (miRNAs) in the regulation of bone homeostasis suggesting the miRNA network as potential novel target for the treatment of MM-related bone disease. Here, we report that miR-29b expression decreases progressively during human OCL differentiation in vitro. We found that lentiviral transduction of miR-29b into OCLs, even in the presence of MM cells,…

Bone diseasePhysiologyCellular differentiationCathepsin KClinical BiochemistryGene ExpressionOsteoclastsOsteolysisMMP9Cathepsin KCells CulturedTartrate-resistant acid phosphataseTumorCulturedReceptor Activator of Nuclear Factor-kappa BGenes fosCell DifferentiationOsteoblastCell biologyIsoenzymesmultiple myelomamedicine.anatomical_structureMatrix Metalloproteinase 9osteoclastMatrix Metalloproteinase 2medicine.medical_specialtyfosCellsAcid PhosphataseBiologyCollagen Type IBone resorptionCell LineOsteoclastCell Line TumorInternal medicinemedicineHumansBone ResorptionOsteoblastsmicroRNA.NFATC Transcription FactorsTartrate-Resistant Acid PhosphatasemiR-29bCell Biologymedicine.diseaseActinsMicroRNAsEndocrinologyGenesAcid Phosphatase; Actins; Bone Resorption; Cathepsin K; Cell Differentiation; Cell Line Tumor; Cells Cultured; Collagen Type I; Gene Expression; Genes fos; Humans; Isoenzymes; Matrix Metalloproteinase 2; Matrix Metalloproteinase 9; MicroRNAs; Multiple Myeloma; NFATC Transcription Factors; Osteoblasts; Osteoclasts; Osteolysis; Receptor Activator of Nuclear Factor-kappa BJournal of Cellular Physiology
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Effects of exosomes released by NSCLC cells on osteoclasts differentiation in ISTITUTO SUPERIORE DI SANITA’, ROMA AICC

2016

Exosomes EGFR osteoclasts lung cancer
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Functional Activation of Osteoclast Commitment in Chronic Lymphocytic Leukaemia: A Possible Role for RANK/RANKL Pathway

2017

AbstractSkeletal erosion has been found to represent an independent prognostic indicator in patients with advanced stages of chronic lymphocytic leukaemia (CLL). Whether this phenomenon also occurs in early CLL phases and its underlying mechanisms have yet to be fully elucidated. In this study, we prospectively enrolled 36 consecutive treatment-naïve patients to analyse skeletal structure and bone marrow distribution using a computational approach to PET/CT images. This evaluation was combined with the analysis of RANK/RANKL loop activation in the leukemic clone, given recent reports on its role in CLL progression. Bone erosion was particularly evident in long bone shafts, progressively inc…

Male0301 basic medicineChronic lymphocytic leukaemiaClone (cell biology)Osteoclastslcsh:MedicineMice0302 clinical medicineMice Inbred NODBone MarrowPositron Emission Tomography Computed Tomographyhemic and lymphatic diseases80 and overProspective StudiesChroniclcsh:ScienceAged 80 and overSettore ING-IND/24 - Principi Di Ingegneria ChimicaLeukemiaMultidisciplinaryBone Density Conservation AgentsReceptor Activator of Nuclear Factor-kappa BbiologyMiddle AgedLymphocyticLeukemiamedicine.anatomical_structureDenosumabRANKL030220 oncology & carcinogenesisFemaleDenosumabmedicine.drugAdultStromal cellArticle03 medical and health sciencesOsteoclastmedicineAnimalsHumansAgedRANK/RANKL Pathwaybusiness.industryRANK Ligandlcsh:RB-CellDiagnostic markersRANK LigandAdult; Aged; Aged 80 and over; Animals; Bone Density Conservation Agents; Bone Marrow; Denosumab; Female; Glucose; Humans; Leukemia Lymphocytic Chronic B-Cell; Male; Mice Inbred NOD; Middle Aged; Osteoclasts; Positron Emission Tomography Computed Tomography; Prospective Studies; RANK Ligand; Receptor Activator of Nuclear Factor-kappa B; Xenograft Model Antitumor Assaysmedicine.diseaseLeukemia Lymphocytic Chronic B-CellXenograft Model Antitumor AssaysGlucose030104 developmental biologyChronic Lymphocytic Leukaemiabiology.proteinCancer researchInbred NODlcsh:QBone marrowbusiness
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Pancreatic undifferentiated carcinoma with osteoclast-like giant cells is genetically similar to, but clinically distinct from, conventional ductal a…

2017

Undifferentiated carcinoma of the pancreas with osteoclast-like giant cells (UCOGC) is currently considered a morphologically and clinically distinct variant of pancreatic ductal adenocarcinoma (PDAC). In this study, we report clinical and pathological features of a series of 22 UCOGCs, including the whole exome sequencing of eight UCOGCs. We observed that 60% of the UCOGCs contained a well-defined epithelial component and that patients with pure UCOGC had a significantly better prognosis than did those with an UCOGC with an associated epithelial neoplasm. The genetic alterations in UCOGC are strikingly similar to those known to drive conventional PDAC, including activating mutations in the…

PDAC variants; Undifferentiated carcinoma with osteoclast-like giant cells; whole exome sequencingAged 80 and overMaleendocrine system diseasesCarcinomaUndifferentiated carcinoma with osteoclast-like giant cellsundifferentiated carcinoma with osteoclast-like giant cellOsteoclastsMiddle AgedImmunohistochemistrydigestive system diseasesArticleNeoplasm Proteinswhole exome sequencingPDAC variants; undifferentiated carcinoma with osteoclast-like giant cells; whole exome sequencing; Aged; Aged 80 and over; Carcinoma Pancreatic Ductal; Exome; Female; Humans; Immunohistochemistry; Male; Middle Aged; Mutation; Neoplasm Proteins; Osteoclasts; Pancreatic NeoplasmsPancreatic NeoplasmsPDAC variantsPancreatic DuctalMutation80 and overHumansExomeFemaleAgedCarcinoma Pancreatic Ductal
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Involvement of multiple myeloma cell-derived exosomes in osteoclast differentiation

2015

Bone disease is the most frequent complication in multiple myeloma (MM) resulting in osteolytic lesions, bone pain, hypercalcemia and renal failure. In MM bone disease the perfect balance between bone-resorbing osteoclasts (OCs) and bone-forming osteoblasts (OBs) activity is lost in favour of OCs, thus resulting in skeletal disorders. Since exosomes have been described for their functional role in cancer progression, we here investigate whether MM cell-derived exosomes may be involved in OCs differentiation. We show that MM cells produce exosomes which are actively internalized by Raw264.7 cell line, a cellular model of osteoclast formation. MM cell-derived exosomes positively modulate pre-…

Pathologymedicine.medical_specialtyCellular differentiationCellOsteoclastsMMP9BiologyExosomesMiceOsteoclastMultiple myelomaSettore BIO/13 - Biologia ApplicatamedicineCathepsin KAnimalsHumansExosomes Multiple MyelomaMultiple myelomaTumor microenvironmentMicroscopy ConfocalBone FormationCell Differentiationmedicine.diseaseMicrovesiclesRAW 264.7 Cellsmedicine.anatomical_structureOncologyTumor microenvironmentCancer researchOsteoclastExosomes Multiple Myeloma; Osteoclasts; Bone FormationResearch PaperSignal Transduction
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Effects of exosomes released by NSCLC cells on osteoclasts differentiation.

Effects of exosomes released by NSCLC cells on osteoclasts differentiation Pucci M., Taverna S., Corrado C., Giallombardo M., Rolfo C. and Alessandro R. Non-small cell lung cancer (NSCLC) has a poorly 5-year survival rate, as a consequence of the delay in the detection of the disease. The majority of patients are diagnosed in an advanced disease stage. Bone metastasis is the most frequent complication in NSCLC resulting in osteolytic lesions. The perfect balance between bone-resorbing osteoclasts (OCs) and bone-forming osteoblasts (OBs) activity is lost in bone metastasis, inducing osteoclastogenesis. Most of the patients with lung cancer are treated with EGFR inhibitors (TKIs). Numerous st…

Settore BIO/13 - Biologia ApplicataExosomes NSCLC osteoclasts
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Otite media atelettasica, adesiva, timpanosclerotica: update medico e chirurgico

2011

Otitis media secretive is one of the most common ear diseases characterized by frequent sequelae and complications; in particular the authors describe middle ear atelectasis with pocket retraction of tympanic membrane, pocket retraction limited to pars tensa or to pars flaccida, adhesive otitis media, partial or total myringosclerosis and tympanosclerosis. For each disease the Authors comment the best surgical approaches to preserve and restore conductive hearing loss. As for middle ear atelectasis, adhesive otitis media, myringosclerosis and partial tympanosclerosis it was evidenced a significant hearing gain while in total tympanosclerosis there was an initial hearing improvement in a sho…

Settore MED/31 - OtorinolaringoiatriaTympanosclerosis- Surgery- Result- Chronic otitis media- TRL4 gene polymorphism- Middle ear atelectasis- Heterotopic boneproduction- Immunocompetent cells- Osteoclasts- Adhesive otitis media- Eustachian tubeSettore MED/32 - Audiologia
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