Search results for "Chronic myeloid leukemia"

showing 10 items of 25 documents

Interleukin 3- receptor targeted exosomes inhibit in vitro and in vivo chronic myelogenous Leukemia cell growth

2017

Despite Imatinib (IM), a selective inhibitor of Bcr-Abl, having led to improved prognosis in Chronic Myeloid Leukemia (CML) patients, acquired resistance and long-term adverse effects is still being encountered. There is, therefore, urgent need to develop alternative strategies to overcome drug resistance. According to the molecules expressed on their surface, exosomes can target specific cells. Exosomes can also be loaded with a variety of molecules, thereby acting as a vehicle for the delivery of therapeutic agents. In this study, we engineered HEK293T cells to express the exosomal protein Lamp2b, fused to a fragment of Interleukin 3 (IL3). The IL3 receptor (IL3-R) is overexpressed in CML…

0301 basic medicineMedicine (miscellaneous)PharmacologyEngineered exosomeExosomesInterleukin 3Antineoplastic AgentMiceHEK293 Cellhemic and lymphatic diseasesDrug CarrierPharmacology Toxicology and Pharmaceutics (miscellaneous)Drug CarriersChronic myeloid leukemiaMyeloid leukemiaChronic myeloid leukemia; Drug delivery; Drug resistance; Engineered exosomes; Interleukin 3; Animals; Antineoplastic Agents; Cell Line Tumor; Cell Proliferation; Disease Models Animal; Drug Carriers; Exosomes; HEK293 Cells; Heterografts; Humans; Imatinib Mesylate; Leukemia Myelogenous Chronic BCR-ABL Positive; Mice; Receptors Interleukin-3; Treatment Outcome3. Good healthTreatment OutcomeImatinib MesylateHeterograftsHeterograftResearch Papermedicine.drugHumanEngineered exosomesAntineoplastic Agents03 medical and health sciencesIn vivoCell Line TumorLeukemia Myelogenous Chronic BCR-ABL PositivemedicineAnimalsHumansneoplasmsInterleukin 3.Interleukin 3Cell Proliferationbusiness.industryAnimalImatinibmedicine.diseaseMicrovesiclesReceptors Interleukin-3ExosomeDisease Models AnimalHEK293 Cells030104 developmental biologyImatinib mesylateDrug resistanceCancer cellDrug deliverybusinessChronic myelogenous leukemia
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Impact of BCR-ABL1 Transcript Type on Response, Treatment-Free Remission Rate and Survival in Chronic Myeloid Leukemia Patients Treated with Imatinib

2021

Chronic myeloid leukemia; BCR-ABL1 transcripts; Response to imatinib Leucemia mieloide crónica; Transcripciones de BCR-ABL1; Respuesta al imatinib Leucèmia mieloide crònica; Transcripcions BCR-ABL1; Resposta a imatinib The most frequent BCR-ABL1-p210 transcripts in chronic myeloid leukemia (CML) are e14a2 and e13a2. Imatinib (IM) is the most common first-line tyrosine–kinase inhibitor (TKI) used to treat CML. Some studies suggest that BCR-ABL1 transcript types confer different responses to IM. The objective of this study was to correlate the expression of e14a2 or e13a2 to clinical characteristics, cumulative cytogenetic and molecular responses to IM, acquisition of deep molecular response …

Oncologymedicine.medical_specialtyrelapse-free survivalLeucèmia mieloide<i>BCR</i><i>-ABL1</i> transcriptsLeucèmia mieloide crònica:Organic Chemicals::Amides::Benzamides::Imatinib Mesylate [CHEMICALS AND DRUGS]survivalArticleOncología:Neoplasms::Neoplasms by Histologic Type::Leukemia::Leukemia Myeloid::Leukemia Myelogenous Chronic BCR-ABL Positive [DISEASES]03 medical and health sciencesBcr abl10302 clinical medicineAnàlisi de supervivència (Biometria)chronic myeloid leukemiaInternal medicinehemic and lymphatic diseasesresponse to imatinibmedicineOverall survivalHematologíaCumulative incidenceBCR-ABL1 transcriptsGene transcriptbusiness.industryRMyeloid leukemiaImatinibGeneral MedicineExpressió gènica:técnicas de investigación::métodos epidemiológicos::estadística como asunto::análisis de supervivencia [TÉCNICAS Y EQUIPOS ANALÍTICOS DIAGNÓSTICOS Y TERAPÉUTICOS]Myeloid leukemia030220 oncology & carcinogenesisMolecular ResponseImatinib:compuestos orgánicos::amidas::benzamidas::mesilato de imatinib [COMPUESTOS QUÍMICOS Y DROGAS]MedicineRemission rateGene expression:Health Care Quality Access and Evaluation::Quality of Health Care::Health Care Evaluation Mechanisms::Statistics as Topic::Survival Analysis [HEALTH CARE]business:neoplasias::neoplasias por tipo histológico::leucemia::leucemia mieloide::leucemia mielogenosa crónica BCR-ABL positiva [ENFERMEDADES]030215 immunologymedicine.drugdiscontinuation
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The prognosis for patients with chronic myeloid leukemia who have clonal cytogenetic abnormalities in philadelphia chromosome-negative cells.

2007

BACKGROUND. Clonal cytogenetic abnormalities (CCA) were detected in Philadelphia chromosome (Ph)-negative cells in some patients with chronic myeloid leukemia (CML) who attained a cytogenetic response to imatinib mesylate. In some patients, CCA/Ph-negative status was associated with myelodysplasia or acute myeloid leukemia. The objective of the current study was to determine the prognostic impact of CCA/Ph-negative cells. METHODS. The authors compared the pretherapeutic risk factors (Kruskall-Wallis test), exposure to cytotoxic drugs (chi-square test), and overall and progression-free survival (Kaplan-Meyer and logistic regression analysis, respectively) of 515 patients with mostly chronic-…

OncologyMaleCancer ResearchMyeloidKaplan-Meier EstimatePiperazineshemic and lymphatic diseasesTreatment FailureAged 80 and overMyeloid leukemiaMiddle AgedPrognosisLeukemiamedicine.anatomical_structureTreatment OutcomeOncologyBenzamidesCytogenetic AnalysisImatinib MesylateFemalemedicine.drugAdultmedicine.medical_specialtyNeutropeniaAntineoplastic AgentsPhiladelphia chromosomeDisease-Free SurvivalLeukemia Myeloid Chronic Atypical BCR-ABL Negativechronic myeloid leukemiaInternal medicineparasitic diseasesmedicineHumansAgedChromosome AberrationsChi-Square Distributionbusiness.industryMyelodysplastic syndromesCancerInterferon-alphaImatinibmedicine.diseaseThrombocytopeniaImatinib mesylateLogistic ModelsPyrimidinesMyelodysplastic SyndromesChronic DiseaseCancer researchbusinessFollow-Up StudiesCancer
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Chronic myeloid leukemia-derived exosomes promote tumor growth through an autocrine mechanism.

2014

Background Chronic myeloid leukemia (CML) is a clonal hematopoietic stem cell disorder in which leukemic cells display a reciprocal t(9:22) chromosomal translocation that results in the formation of the chimeric BCR-ABL oncoprotein, with a constitutive tyrosine kinase activity. Consequently, BCR-ABL causes increased proliferation, inhibition of apoptosis, and altered adhesion of leukemic blasts to the bone marrow (BM) microenvironment. It has been well documented that cancer cells can generate their own signals in order to sustain their growth and survival, and recent studies have revealed the role of cancer-derived exosomes in activating signal transduction pathways involved in cancer cell…

SurvivinMice NudeMice SCIDBiologyAutocrine mechanismsExosomesBiochemistryExosomeInhibitor of Apoptosis ProteinsTransforming Growth Factor beta1Micehemic and lymphatic diseasesCell Line TumorLeukemia Myelogenous Chronic BCR-ABL PositiveTGF-β1medicineAnimalsHumansAutocrine signallingMolecular BiologyCell ProliferationTumor microenvironmentCell growthResearchChronic myeloid leukemiaMyeloid leukemiaCell Biologymedicine.diseaseMicrovesiclesCML exosomesCell biologyNeoplasm ProteinsLeukemiaAutocrine CommunicationCancer cellAnti-apoptotic pathwaysApoptosis Regulatory ProteinsSignal TransductionCell communication and signaling : CCS
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Early diagnosis, clinical management, and follow-up of cardiovascular events with ponatinib

2020

Chronic myeloid leukemia (CML) is a myeloproliferative disorder characterized by neoplastic transformation of pluripotent cells due to a typical cytogenetic and molecular mutation known as Philadelphia (Ph) chromosome. In 2001, the introduction of the tyrosine kinasis inhibitor (TKI) imatinib as a therapeutic strategy for CML with PH chromosome mutation represented an important step towards treatment of these patients, and nowadays, this drug represents the gold therapeutic standard in this clinical setting. A second generation of TKIs (dasatinib, nilotinib, and bosutinib) showed an effective action in all patients with mutations resistant to imatinib. Ponatinib is a third-generation TKI an…

Oncologymedicine.medical_specialtyTyrosine kinase inhibitorReview030204 cardiovascular system & hematology03 medical and health scienceschemistry.chemical_compound0302 clinical medicineRisk FactorsLeukemia Myelogenous Chronic BCR-ABL Positivehemic and lymphatic diseasesInternal medicinemedicineHumansNeoplastic transformation030212 general & internal medicineProtein Kinase InhibitorsTyrosine kinase inhibitorsCardiotoxicitybusiness.industryPonatinibChronic myeloid leukemiaImidazolesDisease ManagementMyeloid leukemiaImatinibPyridazinesDasatinibCardio-oncologyEarly DiagnosisNilotinibchemistryCardiovascular DiseasesPonatinibPonatinib . Tyrosine kinase inhibitors . Chronic myeloid leukemia . Cardio-oncology . ReviewCardiology and Cardiovascular MedicinebusinessBosutinibFollow-Up Studiesmedicine.drug
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Carboxyamidotriazole inhibits cell growth of imatinib-resistant chronic myeloid leukaemia cells including T315I Bcr-Abl mutant by a redox-mediated me…

2010

Mutation of the Bcr–Abl oncoprotein is one of most frequent mechanisms by which chronic myelogenous leukemia (CML) cells become resistant to imatinib. Here, we show that treat- ment of cell lines harbouring wild type or mutant BCR–ABL with carboxyamidotriazole (CAI), a calcium influx and signal transduction inhibitor, inhibits cell growth, the expres- sion of Bcr–Abl and its downstream signalling, and induces apoptosis. Moreover, we show that CAI acts by increasing intracellular ROS. Clinically significant, CAI has also inhibitory effects on T315I Bcr–Abl mutant, a mutation that causes CML cells to become insensitive to imatinib and second generation abl kinase inhibitors.

Cancer Researchbcr-abl Carboxyamidotriazole chronic myeloid leukemia cells imatinibBlotting WesternFusion Proteins bcr-ablAntineoplastic AgentsApoptosisSignal transduction inhibitorBiologyPiperazineschemistry.chemical_compoundMicehemic and lymphatic diseasesCell Line TumorLeukemia Myelogenous Chronic BCR-ABL PositivemedicineAnimalsHumansneoplasmsCell ProliferationSettore MED/04 - Patologia GeneraleABLCarboxyamidotriazoleCell growthWild typeImatinibTriazolesmedicine.diseaseImatinib mesylatePyrimidinesOncologychemistryDrug Resistance NeoplasmBenzamidesMutationCancer researchImatinib MesylateReactive Oxygen SpeciesOxidation-ReductionChronic myelogenous leukemiamedicine.drug
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Clinical Implications of Discordant Early Molecular Responses in CML Patients Treated with Imatinib

2019

A reduction in BCR-ABL1/ABL1IS transcript levels to &lt

Male0301 basic medicineOncologyTreatment outcomeFusion Proteins bcr-ablAntineoplastic Agentlcsh:ChemistryBcr abl10302 clinical medicinehemic and lymphatic diseasesimatinib mesylateBCR-ABL1; European Leukemia Net; chronic myeloid leukemia; early molecular response; imatinib mesylatelcsh:QH301-705.5<i>BCR-ABL1</i>SpectroscopyAged 80 and overGeneral MedicineMiddle AgedComputer Science ApplicationsTreatment Outcome030220 oncology & carcinogenesisFemaleHumanmedicine.drugAdultmedicine.medical_specialtyProtein Kinase InhibitorAntineoplastic AgentsArticleCatalysisEuropean Leukemia NetInorganic Chemistry03 medical and health scienceschronic myeloid leukemiaLeukemia Myelogenous Chronic BCR-ABL PositiveInternal medicineBiomarkers TumormedicineHumansIn patientRNA MessengerPhysical and Theoretical ChemistryProtein Kinase InhibitorsMolecular BiologyAgedbusiness.industryOrganic ChemistryImatinibBCR-ABL1030104 developmental biologyImatinib mesylatelcsh:Biology (General)lcsh:QD1-999early molecular responsebusiness
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Differences among young adults, adults and elderly chronic myeloid leukemia patients

2014

Abstract BACKGROUND: The incidence of chronic myeloid leukemia (CML) increases with age, but it is unclear how the characteristics of the disease vary with age. In children, where CML is very rare, it presents with more aggressive features, including huge splenomegaly, higher cell count and higher blast cell percentage. PATIENTS AND METHODS: To investigate if after childhood the disease maintains or loses these characteristics of aggressiveness, we analyzed 2784 adult patients, at least 18 years old, registered by GIMEMA CML WP over a 40-year period. RESULTS: Young adults (YAs: 18-29 years old) significantly differed from adults (30-59 years old) and elderly patients (at least 60 years old)…

MalePediatricsHost responseBCR-ABL; Chronic myeloid leukemia; Prognosis; Tyrosine kinase inhibitors; Young adults; Adult; Age Factors; Aged; Aged 80 and over; Antineoplastic Agents; Female; Humans; Leukemia Myelogenous Chronic BCR-ABL Positive; Male; Middle Aged; Prospective Studies; Protein Kinase Inhibitors; Protein-Tyrosine Kinases; Spleen; Splenomegaly; Young Adult; Oncology; HematologyTyrosine kinase inhibitorDiseaseAntineoplastic AgentTyrosin kinase inhibitorProtein-Tyrosine Kinasehemic and lymphatic diseases80 and overAge FactorProspective StudiesYoung adultChronicBCR-ABLAged 80 and overLeukemiaIncidence (epidemiology)Chronic myeloid leukemiaAge FactorsMyeloid leukemiaHematologyMiddle AgedProtein-Tyrosine KinasesPrognosisLeukemiaOncologybcr-abl1FemaleBCR-ABL; chronic myeloid leukemia; prognosis; tyrosine kinase inhibitors; young adultsHumanAdultyoung adultsmedicine.medical_specialtyPrognosiProtein Kinase InhibitorAntineoplastic Agentschronic myeloid leukemia; bcr-abl1; Tyrosin kinase inhibitor; prognosis; young adultsNOYoung Adultchronic myeloid leukemiaLeukemia Myelogenous Chronic BCR-ABL PositivemedicineHumansBCR-ABL; Chronic myeloid leukemia; Prognosis; Tyrosine kinase inhibitors; Young adults; Adult; Age Factors; Aged; Aged 80 and over; Antineoplastic Agents; Female; Humans; Leukemia Myelogenous Chronic BCR-ABL Positive; Male; Middle Aged; Prospective Studies; Protein Kinase Inhibitors; Protein-Tyrosine Kinases; Spleen; Splenomegaly; Young AdultProtein Kinase InhibitorsAgedTyrosine kinase inhibitorsAdult patientsbusiness.industrymedicine.diseaseClinical trialBCR-ABL; Chronic myeloid leukemia; Prognosis; Tyrosine kinase inhibitors; Young adults; Adult; Age Factors; Aged; Aged 80 and over; Antineoplastic Agents; Female; Humans; Leukemia Myelogenous Chronic BCR-ABL Positive; Male; Middle Aged; Prospective Studies; Protein Kinase Inhibitors; Protein-Tyrosine Kinases; Spleen; Splenomegaly; Young Adult; Hematology; OncologyProspective StudieBCR-ABL; Chronic myeloid leukemia; Prognosis; Tyrosine kinase inhibitors; Young adults; Adult; Age Factors; Aged; Aged 80 and over; Antineoplastic Agents; Female; Humans; Leukemia Myelogenous Chronic BCR-ABL Positive; Male; Middle Aged; Prospective Studies; Protein Kinase Inhibitors; Protein-Tyrosine Kinases; Spleen; Splenomegaly; Young Adult; Medicine (all); Hematology; OncologyImmunologySplenomegalyBCR-ABL PositiveBCR-ABL chronic myeloid leukemia prognosis tyrosine kinase inhibitors young adultsprognosisbusinessSpleenYoung adultsMyelogenous
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Chronic myeloid leukaemia-derived exosomes promote tumour growth through an autocrine mechanism

2014

Settore BIO/13 - Biologia Applicataexosomes chronic myeloid leukemia autocrine mechanisms anti-apoptotic pathways TGF-β1.
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Exosomes released by k562 chronic myeloid leukemia cells promote endothelial cell tubular differentiation through uptake and cell-to-cell transfer

2012

Exosomes, microvesicles of endocytic origin released by normal and tumor cells, play an important role in cell-to-cell ommunication. Angiogenesis has been shown to regulate progression of chronic myeloid leukemia (CML). The mechanism through which this happens has not been elucidated. We isolated and characterized exosomes from K562 CML cells and evaluated their effects on human umbilical endothelial cells (HUVECs). Fluorescent-labeled exosomes were nternalized by HUVECs during tubular differentiation on Matrigel. Exosome localization was perinuclear early in differentiation, moving peripherally in cells undergoing elongation and connection. Exosomes move within and between nanotubular stru…

Exosomes Nanotubes Chronic myeloid leukemia Endothelial cells Tyrosine kinase inhibitors
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