0000000000359658

AUTHOR

Katia Todoerti

showing 3 related works from this author

Targeting COPZ1 non-oncogene addiction counteracts the viability of thyroid tumor cells

2017

Abstract Thyroid carcinoma is generally associated with good prognosis, but no effective treatments are currently available for aggressive forms not cured by standard therapy. To find novel therapeutic targets for this tumor type, we had previously performed a siRNA-based functional screening to identify genes essential for sustaining the oncogenic phenotype of thyroid tumor cells, but not required to the same extent for the viability of normal cells (non-oncogene addiction paradigm). Among those, we found the coatomer protein complex ζ1 (COPZ1) gene, which is involved in intracellular traffic, autophagy and lipid homeostasis. In this paper, we investigated the mechanisms through which COPZ…

0301 basic medicineCancer ResearchTime FactorsCOPZ1ApoptosisCOPZ1Thyroid cancerThyroid NeoplasmThyroidRNAi TherapeuticCell death; COPZ1; Non-oncogene addiction; Thyroid carcinoma; Animals; Apoptosis; Autophagy; Cell Line Tumor; Cell Survival; Coatomer Protein; Endoplasmic Reticulum Stress; Female; Gene Expression Regulation Neoplastic; Humans; Mice Nude; RNA Interference; Signal Transduction; Thyroid Neoplasms; Time Factors; Transfection; Tumor Burden; Unfolded Protein Response; Xenograft Model Antitumor Assays; RNAi Therapeutics; Oncology; Cancer ResearchEndoplasmic Reticulum StressOncogene AddictionTumor BurdenGene Expression Regulation Neoplasticmedicine.anatomical_structureOncologyFemaleRNA InterferenceNon-oncogene addictionHumanSignal TransductionCell deathProgrammed cell deathXenograft Model Antitumor AssayTime FactorCell SurvivalMice NudeBiologyTransfectionCoatomer ProteinThyroid carcinomaThyroid carcinoma03 medical and health sciencesCell Line TumorAutophagymedicineAnimalsHumansThyroid NeoplasmsEndoplasmic Reticulum StreAnimalAutophagyApoptosimedicine.diseaseXenograft Model Antitumor AssaysRNAi Therapeutics030104 developmental biologyImmunologyUnfolded Protein ResponseCancer researchUnfolded protein response
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miR-22 suppresses DNA ligase III addiction in multiple myeloma

2019

Multiple myeloma (MM) is a hematologic malignancy characterized by high genomic instability. Here we provide evidence that hyper-activation of DNA ligase III (LIG3) is crucial for genomic instability and survival of MM cells. LIG3 mRNA expression in MM patients correlates with shorter survival and even increases with more advanced stage of disease. Knockdown of LIG3 impairs MM cells viability in vitro and in vivo, suggesting that neoplastic plasmacells are dependent on LIG3-driven repair. To investigate the mechanisms involved in LIG3 expression, we investigated the post-transcriptional regulation. We identified miR-22-3p as effective negative regulator of LIG3 in MM. Enforced expression of…

0301 basic medicineGenome instabilityCancer ResearchmiR-22 LIG3DNA repairDNA damageDNA repairApoptosisLIG3ArticleDNA Ligase ATP03 medical and health sciences0302 clinical medicinemicroRNABiomarkers TumorTumor Cells CulturedHumansPoly-ADP-Ribose Binding ProteinsCell ProliferationmiRNAchemistry.chemical_classificationRegulation of gene expressionGene knockdownDNA ligaseLeukemiamicroRNAChemistryHematologyPrognosisXenograft Model Antitumor AssaysGene Expression Regulation Neoplasticmultiple myelomaMicroRNAs030104 developmental biologyOncology030220 oncology & carcinogenesisCancer researchpharmacologyDNA DamageLeukemia
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MiR-146b-5p regulates IL-23 receptor complex expression in chronic lymphocytic leukemia cells

2022

Abstract Chronic lymphocytic leukemia (CLL) cells express the interleukin-23 receptor (IL-23R) chain, but the expression of the complementary IL-12Rβ1 chain requires cell stimulation via surface CD40 molecules (and not via the B-cell receptor [BCR]). This stimulation induces the expression of a heterodimeric functional IL-23R complex and the secretion of IL-23, initiating an autocrine loop that drives leukemic cell expansion. Based on the observation in 224 untreated Binet stage A patients that the cases with the lowest miR-146b-5p concentrations had the shortest time to first treatment (TTFT), we hypothesized that miR-146b-5p could negatively regulate IL-12Rβ1 side chain expression and clo…

MiceMicroRNAsCD40 LigandAnimalsReceptors Antigen B-CellChronic lymphocytic leukemia interleukin-23 receptor (IL-23R) MiR-146bSettore MED/05 - Patologia ClinicaRNA MessengerHematologySettore MED/08 - Anatomia PatologicaInterleukin-23Leukemia Lymphocytic Chronic B-CellBlood Advances
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